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Structural-technological model range of chemical horizontal pumps, and pumping method of chemical liquid media by pumps of structural-technological model range (versions). RU patent 2510612.

Structural-technological model range of chemical horizontal pumps, and pumping method of chemical liquid media by pumps of structural-technological model range (versions). RU patent 2510612.
IPC classes for russian patent Structural-technological model range of chemical horizontal pumps, and pumping method of chemical liquid media by pumps of structural-technological model range (versions). RU patent 2510612. (RU 2510612):

F04D7/02 - of centrifugal type
F04D29/22 - specially for centrifugal pumps
F04D29/08 - Sealings
Another patents in same IPC classes:
Method of electrically driven vertical chemical pump unit production and electrically drive pump unit thus made (versions) Method of electrically driven vertical chemical pump unit production and electrically drive pump unit thus made (versions) / 2509925
Proposed method comprises making the pump composite housing of running section housing thrust plate with bearings, suspension case and flow section housing, making the pump rotor shaft, impeller, adapter case and structural assy. Pump is assembled pump assy is mounted and tested. Flow section housing and suspension case are separated by detachable circular ledged rear wall. Pump incorporates enclosed vaned impeller, vanes being made with angular twisting. Active volume of dynamic filling of diffuser vane channels allows ejection of (5.0…1500)×10-5 m3/vol of pumped fluid into flow section. Impeller disk are protected from outside by hydraulic locks composed by impeller with a set of radial vanes. Impeller vane radius is sufficient for development of hydrodynamic counter pressure to sustain pumped medium head under pump standard operating conditions at 0.25 of vane length from vane near-root point.
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Method of making chemical electrically driven pump unit and chemical electrically driven pump unit thus made Method of making chemical electrically driven pump unit and chemical electrically driven pump unit thus made / 2505712
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Pump composite housing, rotor with shaft and impeller and power drive are produced. Pump running part housing is equipped with bearings. Pump flow section housing has flow section to accommodate impeller and involute collector. Said impeller represents encases multifilar impeller with the main and cover discs. Hydraulic lock composed of independent disc with impeller and circular removable element are arranged behind the main disc. Hydraulic lock impeller radius is smaller than that of impeller. Impeller main disc is equipped with circular ledge. Said ledge makes with impeller hub wall a circular channel communicated with hydraulic lock and, via through bore in main disc, directly with impeller inner surface. Pump is assemble and mounted at pump and drive bearing platform with the help of half-couplings. After assembly, pump unit is tested.
Centrifugal pump Centrifugal pump / 2493439
Centrifugal pump comprises a body with an inlet nozzle changing into the central part of the body. The central part of the body changes into a discharge nozzle. In the central part of the body there is an impeller of tunnel type. On the front circular disc of the wheel there are circular channels. On the inner wall of the central part of the body upstream the inlet to the discharge nozzle there is a step. On the inner side of the body cover installed at the side of the inlet nozzle there are circular collars.
Method of electrically driven vertical chemical pump unit production and electrically drive pump unit thus made (versions) Method of electrically driven vertical chemical pump unit production and electrically drive pump unit thus made (versions) / 2509925
Proposed method comprises making the pump composite housing of running section housing thrust plate with bearings, suspension case and flow section housing, making the pump rotor shaft, impeller, adapter case and structural assy. Pump is assembled pump assy is mounted and tested. Flow section housing and suspension case are separated by detachable circular ledged rear wall. Pump incorporates enclosed vaned impeller, vanes being made with angular twisting. Active volume of dynamic filling of diffuser vane channels allows ejection of (5.0…1500)×10-5 m3/vol of pumped fluid into flow section. Impeller disk are protected from outside by hydraulic locks composed by impeller with a set of radial vanes. Impeller vane radius is sufficient for development of hydrodynamic counter pressure to sustain pumped medium head under pump standard operating conditions at 0.25 of vane length from vane near-root point.

FIELD: engines and pumps.

SUBSTANCE: structural-technological model range of chemical pumps includes a set of pumps. Each pump of the row is made as follows as per a single-type system: it is centrifugal, one-stages; it includes a rotor shaft and an impeller and consists of flow and travel parts. The pump travel part housing includes bearing supports. The flow part housing is provided with a flow cavity combined with a spiral collector of pumped liquid with diffusion airfoil gradient of 1÷70 m2/m. The impeller is of a closed type and has the main and covering discs and a system of blades. The main disc is protected on the rear side with a hydraulic lock containing an impeller in the form of an independent disc. The flow part housing is equipped with an detachable annular wall geometrically coordinated with the hydraulic lock. The least of outside radii of the above wall is equal at least to the wheel flow-through radius of the wheel, and hydraulic lock impeller radius is equal at least to the wheel radius. The main wheel disc is equipped with an annular comb and a through opening.

EFFECT: increasing service life, durability, operating reliability of pump operation, pumping efficiency, protection against leakages of pumped media and noxious fumes to atmosphere.

21 cl, 7 dwg

 

The invention relates to the field of pumpbuilding, namely the chemical structures horizontal centrifugal pumps with impeller is of closed or open type, designed for pumping chemically aggressive liquids and ways of pumping chemically aggressive liquid media.

Known hermetic centrifugal pump contains a body placed in it by the impeller, driven in rotation of the cylindrical magnetic coupling, leading coupling half of which is joined with the drive shaft of the motor and driven with impeller. Coupling mounted coaxial, the split-screen in the form of a cylindrical glass. The body is made with variable wall thickness along its generating line and plot the smallest wall thickness is between the poles of the leading and detail of the coupling (RU 2088807 C1, publ. 27.08.1997).

Known centrifugal pump, mounted on the frame containing the body of wear-resistant material with inlet and outlet branch pipes with flanges, shaft impeller is of closed type in the bearings and the site seal. On suction and discharge flanges flanges are made of a rotating, demountable and installed on the pipe without immediate stop of the flange pipe. On the flange and pipe made semicircular undercut, which posted split the retaining rings, perceiving the axial load in connection with pipe flanges (RU 2332591 C1, publ. 27.08.2008).

There is a method of manufacturing chemical hermetic centrifugal pump, providing for the manufacture of the body with magnetic coupling, running elements and the impeller and the pump Assembly. Before manufacture of the body, the flow of elements and impeller are made frames for their parts made of carbon fibrous filler, after which the frames of these details is saturated with pyrocarbon, mechanically treated and silicononane (RU 2047792 C1, publ. 10.11.1995).

The disadvantages of technical decisions are guaranteed protection from leaks pumping chemically aggressive liquids at continuous operation of the pump during operation, which implies not a high resource of the pump and pumping efficiency of working environment with a high concentration of aggressive components and, ultimately reduces the branch competitiveness of the pump and running on their base electric pump units.

The task of the group of inventions so linked as a single creative idea consists in alternative development constructive-technological model lines of horizontal chemical pumps, endowed with elevated resource, reliability and efficiency of pumping chemically aggressive liquid media and increased protection from leaks of these environments and from air pollution poisonous fumes, as well as in alternative development methods pumping mentioned chemically aggressive liquid pumps specified range.

The task of the first object of the invention is solved the fact that the constructive-technological model range of chemical horizontal pumps according to the invention, includes a set of pumps, made with the possibility of pumping chemically aggressive liquid media, with each representative pump range includes structural system of the same type for the specified set of pumps made of single-stage, centrifugal, containing the rotor shaft and the impeller is gated and consists of running and running parts, and the body of each specified range includes pumps equipped with inlet axial and tangential or radial discharge nozzles case of a flowing part of having a cavity flow, combined with the collection of the pumped liquid are made of spiral gradient of G diffusivity are determined from the expression

G = S in s x - S in x l about t in = 1 ASP 70 [ m 2 / m ] ,

where S o and S BX - area output and input cross-sections allotment; l resp - length spiral drain;

and the impeller is made in the form of multiple-impeller, which includes the main and top drives and system located between the shoulder blades, with the primary disk contains the hub through which fixed planted on the shaft, and protected from the back side trap containing the impeller in the form of additional Autonomous disk located at least on the side opposite the main disk impeller, beam blades, and case flow part equipped with a removable ring with the ledge in the cross section of the back wall, geometrically consistent with hydroseal, while the smaller of external radiuses of the specified walls are made not less than the passing of impeller radius and the radius of the water seal impeller made smaller than the radius of the impeller, but at least the amount sufficient to create hydrodynamic protective relieving the pressure of getting into the hydraulic lock of the pumping medium, in addition, primary disk impeller equipped with rear-intermediate ring comb with internal radius is smaller than the radius of the disk impeller and forms with the wall hub impeller annular channel reported with impeller the water seal and by at least one of the through hole in primary drive communicated to the duct with the volume of the impeller, and covering the drive is endowed input neck, inner lead-in radius of which is performed not less than the range of the input aperture of a body of flowing part, preferably, flush with him, also, removable rear wall of the housing flowing part mounted in the opening of the specified body, which has a loop-through radius, providing the opportunity for the input and output of the impeller for Assembly and disassembly of the pump.

This impeller each representative pump series can contain attached to the main multiple disk system, curved, at least in the projection on condition plane primary disk blades, separated interscapular channels, and the impeller blades are made of the same or different length, and number of blades impeller made from 3 to 24, preferably, from 5 to 7, with the active volume is dynamically fill in the aggregate interscapular channel variant includes the release on duct per rotation of the impeller (5 to 1500)x 10 -5 m 3 /about the pumped liquid.

Pressure pipe casing flow part, at least, each representative of the pump of series can be in the form of cone with the difference of the squares of the input and output of cross-sections that reduce the speed of injection flow at the outlet of the diffuser 1.2 to 4.0 times.

The inlet pipe, collection and discharge port can be placed in the case of a flowing part of each representative of the pump of some series with the formation of a single channel for the flow of fluid in which the supply tube is symmetrical about the axis of the shaft, and contains lead the neck radius partially covered in the projections on the condition plane normal to the axis of the shaft to the tip of the blades facing to the specified axis, besides running the cavity is made from the back, side and lead-walls, forming large enough to accommodate the impeller and the spiral of the collection, which is made mainly tangentially reported with pressure reducer.

Chassis chassis, each representative of the pump of series can be completed covering, at least, most of the length of the shaft of the rotor and provided with crankcase and at least one bearing support with the possibility of placing the other bearing arrangements directly in the specified case the running gear pump, where one bearing supports, preferably, addressed to the body of flowing part, contains a radial bearing and the other contains mainly the double angular contact ball bearing.

The rotor shaft each representative pump series may contain a host seals, including housing seals, and consisting of a stuffing box rings, drain plug, fittings supply and removal of cooling liquid and preferably split flange, while if the pump coolant enters the site seal through the bottom fitting and removal carried out through the top of the fitting.

To eliminate leakage of the fluid on the shaft and through connectors buildings flowing and running parts of the pump can be installed, o-rings, preferably, of elastic material such as rubber.

At least, representative pumps series can be used for pumping chemically aggressive liquid media such as acids, alkalis, electrolytes and other with temperature from 0 to+98'c with hydrogen index 0 to 14 pH, density up to 1870 kg/m 3 , kinematic viscosity up to 30 x 10 -6 m/s and solid inclusions up to 1 mm, the volumetric concentration of the latter, not exceeding 5% or for pumping hot and crystallising liquids with temperature from 0 to 250°C and fire explosive environments, with pumps for pumping mentioned hot and crystallizing media includes heated hydraulics and cooling bearing units.

The task of the third object of the invention decides that the constructive-technological model range of chemical horizontal pumps according to the invention, includes a set of pumps, made with the possibility of pumping chemically aggressive liquid media, with each representative pump range includes structural system of the same type for the specified set of pumps made of single-stage, centrifugal, containing the rotor shaft and impeller open type and consists of running and running parts, and the body of flowing part includes combined with the pressure pipe casing spiral collector ring ledge crest, the back wall, consisting of paired circular ridge corps of the collection and the ledge ring element, as well as removable made with axial inlet pipe ends the lid, together forming a cavity flow, and the case of the chassis of the pump is provided with crankcase and not less than two radial-thrust and radial bearings, impeller open type made in the form of multiple-impeller, including equipped with a system of blades primary drive with wheel hub and ring crest at the external contour, facing in the direction opposite to the impeller, and specified the comb is made with the external radius congruent response, internal radius of the circular ledge ridge in the case of the collection, with the primary drive between the specified crest and the hub is endowed hydrodynamic protection in the form of forming the impeller systems beam blades, and, in addition, hydrodynamic protection is strengthened trap in the form installed on the shaft additional offline disk, also equipped with an impeller with a system of beam blades, at least with opposite the impeller and the radius of the impeller is made less than the radius of the impeller by an amount sufficient to create hydrodynamic protective relieving penetrating into the hydraulic lock of the pumping medium, these ledge ring element of the back wall of the case of a flowing part of geometrically aligned inner ledge with the radius of a hydroseal, in addition, the lesser of the external radiuses of the specified removable covers, made no less bore radius impeller with capability of the input and output of the last running cavity during installation and the dismantling of the pump.

Moreover, the hub of the impeller is made with at least one outer ledge for congruent mates in the area of the ledge to ledge ring element of the back wall of the Cabinet of flowing part with a possibility of free rotation of a shaft with a nave of the impeller.

This impeller each representative pump series may contain attached to the main multiple disk system, curved, at least in the projection on condition plane primary disk blades, separated interscapular channels, and the impeller blades are made of the same or different length, and number of blades impeller made from 3 to 24, preferably from 5 to 7, with the active volume is dynamically fill in the aggregate interscapular channel variant includes the release on duct per rotation of the impeller (5 to 1500)x 10 -5 m 3 /about the pumped liquid.

Pressure pipe casing flow part, at least, each representative of the pump of series can be in the form of cone with the difference of the squares of the input and output of cross-sections that reduce the speed of injection flow at the outlet of the diffuser 1.2 to 4.0 times.

Inlet outlet, flowing cavity, collection and discharge port can be placed in the case of a flowing part of the pump series with the formation of a single channel for the flow of fluid in which the supply tube is symmetrical about the axis of the shaft, and contains lead-neck with radius partially covered in the projections on the condition plane normal to the axis of the shaft to the tip of the blades facing to the specified axis, in addition, running the cavity is made from the back, side and lead-walls, forming large enough to accommodate the impeller and the spiral of the collection, which is made mainly tangentially reported with pressure reducer.

Chassis chassis, each representative of the pump of series can be completed covering, at least, most of the length of the rotor shaft and the rotor shaft of the pump is made with consoles, the length of one of them, equipped with impeller made not less than two times the length of the other console, and, in addition, radial bearing support, preferably, addressed to the body of flowing part, contains a radial bearing and the other bearing support includes, mainly, the double angular contact ball bearing.

To eliminate leakage of the fluid on the shaft and through connectors buildings flowing and running parts of the pump can be installed, o-rings, preferably, of elastic material such as rubber.

At least, representative pumps series can be used for pumping chemically aggressive liquid media such as acids, alkalis, electrolytes and other with temperatures ranging from 0% to 98'c with hydrogen index 0 to 14 pH, density up to 1870 kg/m 3 , kinematic viscosity up to 30 x 10 -6 m 2 /s and solid inclusions up to 1 mm, the volumetric concentration last, not exceeding 5%, or for pumping hot and crystallising liquids with temperature from 0 to 250°C and fire explosive environments, with pumps for pumping mentioned hot and crystallizing media includes heated hydraulics and cooling bearing units.

Many representative pumps of the series may be made with the possibility of a power connection to the electric motor, mainly, asynchronous to use the drive, transmitting torque on the rotor shaft of the pump with the provision of frequency of rotation of the shaft impeller, preferably, to 1500 rpm with optional power from 5 to 435 kW, and also possibility of use of electric motors with a number of rpm to 3,000 rpm with optional power from 7.5 to 250 kW, and software when using the mentioned motors variant of delivery of 10 to 1200 m3 /h and pressure of the pumping medium from 10 to 150 m

The task of the fourth object of the invention is solved in that way pumping chemical aggressive liquid media, such as acids, alkalis, electrolytes, or hot and crystallising liquids, and fire explosive environments, according to the invention pumping any of these liquid environments produce no less than one of the pumps constructive-technological model range described above.

Technical result achieved is given by a set of characteristics of a group of related unified creative idea of the invention consists in alternative development forming constructive-technological models of chemical horizontal pumps, endowed with elevated resource, reliability and efficiency of pumping chemically aggressive liquid media and increased protection from leaks of these media and pollution of atmospheric air with poisonous fumes, as well as in alternative development methods pumping mentioned chemically aggressive liquid pumps specified range.

This is achieved developed in the invention of design solutions and technological parameters of main units and elements of pumps series, first of all combined system enhanced hydrodynamic protection during operation of the pump, optimally complement hydrostatic leak protection chemically aggressive environment and poisonous fumes that avoids negative impacts on the bearings and the environment in all operating situations. In addition, the technical result is achieved due to the variant developed design solutions and shape of the impeller is of closed and open type, spiral collection and discharge nozzle, which provide in the aggregate effective pumping specified hazardous environments.

The technical result is also reflected in increased wear resistance to chemical and mechanical aggression, the most wearing parts of the flow variant developed designs of pumps, in particular, at the expense of variant solutions designs trap in combination with auxiliary hydronamic pump and pairing moving parts of the rotor with a casing running and running parts of the pump. These technological advantages constructive developments allow to expand the technical result of the production of the proposed chemical pumps in the sphere of operation, which is reflected in variant develop effective ways of delivery of specified hazardous environments with greater environmental environmental parameters.

The invention is illustrated by drawings, where:

figure 1 shows the chemical horizontal pump on a variant version with impeller is of closed type, longitudinal section; figure 2 - the impeller is of closed type, the incision; figure 3 shows the chemical horizontal pump on a variant version with impeller open type, longitudinal section; 4 - impeller open incision.

Under the first option constructive-technological model range of chemical horizontal pumps includes a set of pumps, made with the possibility of pumping chemically aggressive liquid media. Each representative pump range includes structural system of the same type for the specified set of pumps made of single-stage, centrifugal containing shaft 1 of the rotor and the wheel 2 is gated and consists of running and running parts 3 and 4 respectively.

The case of each of these pumps series includes building 5 chassis 4 and equipped with axial inlet pipe 6 and tangential or radial discharge pipe 7 block 8 of the flow part 3 having the flowing cavity 9, combined with a collection of 10 of the pumped liquid. A collection of 10 made a spiral with a gradient of G diffusivity are determined from the expression

G = S in s x - S in x l about t in = 1 ASP 70 [ m 2 / m ] ,

where S o and S I is the square of the output and input of cross-sections of the collection; l resp - the length of the spiral channel of the collection.

Impeller 2 closed type are made in the form of multiple-impeller, which includes the main and top drives 11 and 12 and system located between the shoulder blades 13. Primary drive 11 contains the hub 14, by which fixed planted on the shaft 2 and protected from the back side trap 15. Hydraulic seal contains 15 impeller 16 in the form of additional Autonomous disk located at least on the side opposite to the main disc 11 impeller 2, beam blades.

Case 8 flowing part 3 is equipped with removable ring with the ledge in the cross section of the back wall 17, geometrically agreed with hydroseal 15. The smaller of the outer radii of the back wall of 17 made no less bore radius impeller 2. The radius of the impeller 16 hydroseal 15 is less than the radius of the impeller 2, but at least the amount sufficient to create hydrodynamic protective relieving the pressure of penetrating into the water lock 15 of the pumping medium.

Primary drive 11 impeller 2 is equipped with the back side of the intermediate ring crest 18 with internal radius is smaller than the radius of the disk impeller 16 and forms with the wall hub 14 impeller 2 annular channel 19, communicated with the water seal impeller 15 and by at least one of the through hole in 20 primary drive 11 reported to the duct with the volume impeller 2. Covering the disc 12 endowed input neck 21, internal lead-in radius of which is performed not less than the range of the input aperture of housing 8 flowing part 3, preferably, flush with it. Removable rear wall of 17 housing 8 flowing part 3 is mounted in the opening of the specified body, which has a loop-through radius, providing the opportunity for the input and output impeller 2 during installation and dismantling the pump.

Impeller 2 each representative pump series has attached to the main disc 11 multiple-system, curved, at least in the projection on condition plane primary drive 11 blades 13 separated interscapular channels. Blades 13 impeller 2 performed the same or different length, and number of blades 13 impeller made from 3 to 24, preferably, from 5 to 7. Active dinamic filling together interscapular channel variant includes the release on duct per rotation of the impeller (5 to 1500)x 10 -5 m 3 /about the pumped liquid.

Discharge port 7 case 8 flowing part 3, at least, each representative of the pump number is executed in the form of cone with the difference of the squares of the input and output of cross-sections that reduce the speed of injection flow at the outlet of the diffuser 1.2 to 4.0 times.

Inlet pipe 6, a collection of 10 and discharge port 7 is placed in block 8 of the flow part 3 each representative of the pump of some series with the formation of a single channel for the flow of fluid in which the inlet pipe 6 made symmetrical about the axis of the shaft 1, and contains lead-neck with radius partially covered in the projection conditional on the plane normal to the axis of the shaft 1, tip of the blades 13, addressed to the specified axis. Running cavity 9 made from the back, side and lead walls that make up the volume enough to fit impeller 2 and spiral collection of 10, which is made mainly tangentially reported with pressure pipe 7.

Block 5 of the chassis, 4 of each representative pump series is made covering, at least, most of the length of the shaft 1 of the rotor and provided with crankcase 22 and at least one bearing support with the possibility of placing the other bearing arrangements directly in the specified case the running of the pump. Bearing support 23, preferably facing the housing 8 flowing part 3 contains the radial bearing 24, and the other bearing 25 contains mainly the double angular contact ball bearing 26.

The rotor shaft 1 each representative of the pump of series contains the node seals, including housing 27 seals, and consisting of rings stuffing box 28, drainage sleeve 29, fittings supply and removal of cooling liquid and preferably split flange 30. If the pump coolant enters the site seal through the bottom fitting 31 and drainage carried out through the top of the fitting.

To eliminate leakage of the fluid on the shaft 1 and connectors buildings flowing and running parts 3 and 4 respectively of the pump set of sealing rings 32, preferably, of elastic material such as rubber.

At least, representative pumps series are designed for pumping chemically aggressive liquid media such as acids, alkalis, electrolytes and other with temperatures ranging from 0% to 98'c with hydrogen index 0 to 14 pH, density up to 1870 kg/m 3 , kinematic viscosity up to 30 x 10 -6 m 2 /s and solid inclusions up to 1 mm, the volumetric concentration of the latter, not exceeding 5%, or for pumping hot and crystallising liquids with temperature from 0 to 250°C and fire explosive environments. Pumps for pumping mentioned hot and crystallizing media includes heated hydraulics and cooling bearing units (not shown).

Many representative pumps series made with the possibility of a power connection to the electric motor, mainly, asynchronous to use the drive, transmitting torque on the rotor shaft of the pump with the provision of frequency of rotation of the shaft impeller, preferably up to 1500 rpm with optional power from 5 to 435 kW, and also possibility of use of electric motors with a speed shaft up to 3000 rpm with optional power from 7.5 to 250 kW, and software when using the mentioned motors variant of delivery of 10 to 1200 m3 /h and pressure of the pumping medium from 10 to 150 m

On the first version of the method of pumping chemical aggressive liquid media such as acids, alkalis, electrolytes or hot and crystallising liquids, and fire explosive environments, pumping any of these liquid environments produce no less than one of the pumps constructive-technological model range described above.

On the second version constructive-technological model range of chemical horizontal pumps includes a set of pumps, made with the possibility of pumping chemically aggressive liquid media. Each representative pump range includes structural system of the same type for the specified set of pumps made of single-stage, centrifugal containing shaft 1 of the rotor and impeller 33 of open type, and consists of running and running parts 3 and 4 respectively.

Case 8 flowing part 3 includes combined with pressurised pipe 7 block 34 spiral collector ring ledge crest 35, rear wall, consisting of paired circular ridge 35 corps 34 of the collection and the ledge ring item 36 and removable made with axial inlet pipe 6 lead-cover 37, together forming a flow chamber 9. Block 5 of the chassis, 4 of the pump is provided with crankcase 22 and not less than two radial-thrust and radial bearings 25 and 23, respectively.

Impeller 33 open type made in the form of multiple-impeller, including equipped with a system of blades 13 primary drive 11 with a nave 14 and ring crest 38 at the external contour, facing in the direction opposite to the impeller. The crest of the 38 completed with external radius congruent response, internal radius of the circular ledge ridge 35 in the case 34 of the collection. Primary drive 11 between Cam 38 and the hub 14 endowed hydrodynamic protection in the form of forming the impeller 39 system beam blades. Hydrodynamic protection is strengthened trap 15 as installed on the shaft 1 additional offline disk, also equipped with an impeller 16 with the system of beam blades, at least on the side opposite to the impeller. The radius of the impeller made 16 less than the radius of the impeller 33 by an amount sufficient to create hydrodynamic protective relieving penetrating into the water lock 15 of the pumping medium. The ledge ring item 36 the back wall of the Cabinet 8 flowing part 3 geometrically aligned inner ledge with the radius trap 15. The smaller of the outer radii removable covers 37 completed not less than bore radius of the impeller 33 with capability of the input and output of the last running cavity 9 during installation and dismantling the pump.

Hub 14 impeller 33 done with at least one outer ledge 40 for congruent mates in the area of the ledge with 40 ledge ring item 36 the back wall of the Cabinet 8 flowing part 3 with possibility of free rotation of a shaft 1 with a nave 14 impeller 33.

Impeller 33 each representative pump series has attached to the main disc 11 multiple-system, curved, at least in the projection on condition plane primary disk blades 13 separated interscapular channels. Blades 13 impeller 33 performed the same or different length, and number of blades impeller made from 3 to 24, preferably, from 5 to 7. Active dinamic filling together interscapular channel variant includes the release on duct per rotation of the impeller (5 to 1500)x 10 -5 m 3 /about the pumped liquid.

Discharge port 7 case 8 flowing part 3, at least, each representative of the pump number is executed in the form of cone with the difference of the squares of the input and output of cross-sections that reduce the speed of injection flow at the outlet of the diffuser 1.2 to 4.0 times.

Inlet pipe 6 running cavity 9, a collection of 10 and discharge port 7 is placed in block 8 of the flow part 3 pump series with the formation of a single channel for the flow of fluid in which the inlet pipe 6 made symmetrical about the axis of the shaft 1 and contains lead-neck with radius partially covered in the projection conditional on the plane normal to the axis of the shaft 1, tip of the blades 13, addressed to the specified axis. Running cavity 9 made from the back, side and lead walls that make up the volume enough to fit impeller 33 and spiral collection, which is made mainly tangentially reported with pressure pipe 7.

Block 5 of the chassis, 4 of each representative pump series is made covering, at least, most of the length of the shaft 1 of the rotor. Shaft 1 of the pump rotor is made with consoles 41. The length of the console, equipped with impeller 33 performed not less than twice the length of the other console. Radial bearing support 23, preferably facing the housing 8 flowing part 3 contains the radial bearing 24, and the other bearing support 25 contains mainly the double angular contact ball bearing 26.

The rotor shaft 1 each representative of the pump of series contains the node seals, including housing 27 seals, and consisting of rings stuffing box 28, drainage sleeve 29, fittings supply and removal of cooling liquid and preferably split flange 30. If the pump coolant enters the site seal through the bottom fitting 31 and drainage carried out through the top of the fitting.

To eliminate leakage of the fluid on the shaft 1 and connectors buildings flowing and running parts 3 and 4 respectively of the pump set of sealing rings 32, preferably, of elastic material such as rubber.

At least, representative pumps series are designed for pumping chemically aggressive liquid media such as acids, alkalis, electrolytes and other with temperature from 0 to+98'c with hydrogen index 0 to 14 pH, density up to 1870 kg/m 3 , kinematic viscosity up to 30 x 10 -6 m/s and solid inclusions up to 1 mm, the volumetric concentration of the latter, not exceeding 5%, or for pumping hot and crystallising liquids with temperature from 0 to 250°C and fire explosive environments. Pumps for pumping mentioned hot and crystallizing media includes heated hydraulics and cooling bearing units (not shown).

Many representative pumps series made with the possibility of a power connection to the electric motor, mainly, asynchronous to use the drive, transmitting torque on the rotor shaft of the pump with the provision of frequency of rotation of the shaft impeller, preferably up to 1500 rpm with optional power from 5 to 435 kW, and also possibility of use of electric motors with a speed shaft up to 3000 rpm with optional power from 7.5 to 250 kW, and software when using the mentioned motors variant of delivery of 10 to 1200 m3 /h and pressure of the pumping medium from 10 to 150 m

In the way of pumping chemical aggressive liquid media such as acids, alkalis, electrolytes or hot and crystallising liquids, and fire explosive environments, pumping any of these liquid environments produce at least one of the pumps constructive-technological model range described above.

The work of one of the pumps constructive-technological model range, on the example of the pump impeller is of closed type, as follows.

The pumped fluid through the inlet pipe 6, getting on the sign-in rotary centrifugal impeller 2, moves from the center to the periphery under the action of centrifugal forces and diffuse expansion in the interscapular channel impeller, while gaining kinetic energy, and receiving the spin in the direction of rotation of the impeller.

After exiting the impeller flow moves in spiral cone collection of 10, expanding to the pressure tube 7 mode, the approximate equality of flow rates during collection. From the collection of the pumped fluid gets into the discharge port 7, made diffuser with reduced speed when passing the pipe twice with simultaneous transition of the kinetic energy of the flow in the potential and entered into the discharge line. The flowing part of the pump in the process protects against leakage of the fluid in a partially open-chassis, 4 and through it into the atmosphere hydrodynamic protection in the form of the trap 15 rotating disk impeller 16, which creates pressure and keeps the pump shaft 1 dry. After the end of pump operation and finding him with a fixed position of the rotor pump protected gland packing 28.

Similar work pumps constructive-technological model series impeller open type.

1. Constructive-technological model range of chemical horizontal pumps, described by that includes a set of pumps, made with the possibility of pumping chemically aggressive liquid media, with each representative pump range includes structural system of the same type for the specified set of pumps made of single-stage, centrifugal, containing the rotor shaft and the impeller is gated and consists of running and running parts, and the body of each specified range includes pumps equipped with axial inlet and tangential or radial discharge nozzles case of a flowing part of having a cavity flow, combined with the collection of the pumped liquid are made of spiral gradient of G diffusivity are determined from the expression

G = S in s x - S in x l about t in = 1 ASP 70 [ m 2 / m ]

where S o and S BX - area output and input cross-sections allotment; l resp - length spiral drain; and the impeller is made in the form of multiple-impeller, which includes the main and top drives and system located between the shoulder blades, with the primary drive contains the hub through which fixed planted on the shaft, and protected from the back side trap containing the impeller in the form of additional Autonomous disk located at least on the side opposite the main disk impeller, beam blades, and case flow part equipped with a removable ring with the ledge in the cross section of the back wall, geometrically agreed with the trap, while the smaller of external radiuses of the specified walls are made not less than the passing of impeller radius and the radius of the water seal impeller made less the radius of the impeller, but at least the amount sufficient to create hydrodynamic protective relieving the pressure of getting into the hydraulic lock of the pumping medium, in addition, primary disk impeller equipped with rear-intermediate ring comb with internal radius is smaller than the radius of the disk impeller and forms with the wall hub impeller annular channel, reported with the water seal impeller and by at least one of the through hole in primary drive communicated to the duct with the volume of the impeller, and covering the drive is endowed input neck, internal lead-in the radius of which is not less than the range of the input aperture of a body of flowing part, preferably, flush with him, also, removable rear wall of the housing flowing part mounted in the opening of the specified body, which has a loop-through radius, providing the opportunity for the input and output of the impeller for Assembly and disassembly of the pump.

2. Constructive-technological model range according to claim 1, wherein the impeller each representative pump series has attached to the main multiple disk system, curved, at least in the projection on condition plane the primary disk blades, separated interscapular channels, and the impeller blades are made of the same or different length, and number of blades impeller made from 3 to 24, preferably, from 5 to 7, with the active volume is dynamically fill in the aggregate interscapular channel variant includes the release on duct per rotation of the impeller (5 to 1500)x 10 -5 m 3 /about the pumped liquid.

3. Constructive-technological model range according to claim 1, characterized in that the pressure pipe casing flow part, at least, each representative of the pump number is executed in the form of cone with the difference of the squares of the input and output of cross-sections that reduce the speed of injection flow at the outlet of the diffuser 1.2 to 4.0 times.

4. Constructive-technological model range according to claim 1, wherein the supply pipe, the collection and discharge port is placed in the case of a flowing part of each representative of the pump of some series with the formation of a single channel the flow of fluid in which the supply tube is symmetrical about the axis of the shaft, and the lead-in contains the neck radius partially covered in the projections on the condition plane normal to the axis of the shaft to the tip of the blades facing to the specified axis, in addition, running the cavity is made from the back, side and lead-walls, forming large enough to accommodate the impeller and the spiral of the collection, which is made mainly tangentially reported with pressure reducer.

5. Constructive-technological model range according to claim 1, characterized in that the body chassis, each representative of the pump series is made covering, at least, most of the length of the shaft of the rotor and provided with crankcase and at least one bearing support with the possibility of placing the other bearing arrangements directly in the specified case the running gear pump, where one bearing supports, preferably, addressed to the body of flowing part, contains a radial bearing and the other contains mainly the double angular contact ball bearing.

6. Constructive-technological model range according to claim 1, characterized in that the rotor shaft each representative of the pump of series contains the node seals, including housing seals, and consisting of a stuffing box rings, drain plug, fittings supply and removal of cooling liquid and preferably split flange, while if the pump coolant enters the site seal through the bottom fitting and removal carried out through the top of the fitting.

7. Constructive-technological model range according to claim 1, characterized in that in order to eliminate leakage of the fluid on the shaft and through connectors buildings flowing and running parts of the pump installed, o-rings, preferably, of elastic material such as rubber.

8. Constructive-technological model range according to claim 1, wherein at least a representative pumps series are designed for pumping chemically aggressive liquid media such as acids, alkalis, electrolytes and other with temperatures ranging from 0% to 98'c with hydrogen index 0 to 14 pH, density up to 1870 kg/m 3 , kinematic viscosity up to 30 x 10 -6 m 2 /s and solid inclusions up to 1 mm, the volumetric concentration of the latter, not exceeding 5%, or for pumping hot and crystallising liquids with temperature from 0 to 250°C and fire explosive environments, with pumps for pumping mentioned hot and crystallizing media includes heated hydraulics and cooling bearing units.

9. Constructive-technological model range according to claim 1, characterized in that the set of representative pumps series made with the possibility of a power connection to the electric motor, mainly, asynchronous to use the drive, transmitting torque on the rotor shaft of the pump with the provision of frequency of rotation of the shaft impeller, preferably up to 1500 rpm with optional power from 5 to 435 kW, and also possibility of use of electric motors with a number of rpm to 3,000 rpm with optional power from 7.5 to 250 kW, and software when using the mentioned motors variant of delivery of 10 to 1200 m3 /h and pressure of the pumping medium from 10 to 150 m

10. The method of pumping chemical aggressive liquid media such as acids, alkalis, electrolytes or hot and crystallising liquids, and fire explosive environments characterized by the fact that pumping of any of these liquid environments produce no less than one of the pumps constructive-technological model line, made by any one of claims 1 to 9.

11. Constructive-technological model range of chemical horizontal pumps, described by that includes a set of pumps, made with the possibility of pumping chemically aggressive liquid media, with each representative pump range includes structural system of the same type for the specified set of pumps made of single-stage, centrifugal, containing the rotor shaft and impeller open type and consists of running and running parts, and the body of flowing part includes combined with pressurised pipe casing spiral collector ring ledge crest, the back wall, consisting of paired circular ridge corps of the collection and the ledge ring element, as well as removable made with axial inlet pipe ends the lid, together forming running cavity and enclosure chassis the pump is provided with crankcase and not less than two radial-thrust and radial bearings, impeller open type made in the form of multiple-impeller, including equipped with a system of blades primary drive with wheel hub and the ring crest at the external contour, facing in the direction opposite to the impeller, and specified the comb is made with the external radius congruent response, internal radius of the circular ledge ridge in the case of the collection, with the primary drive between the specified crest and the hub endowed hydrodynamic protection in the form of forming the impeller systems beam blades, and, in addition, hydrodynamic protection is strengthened trap in the form installed on the shaft additional offline disk, also equipped with an impeller with a system of beam blades, at least on the side opposite the impeller and the radius of the impeller is made less than the radius of the impeller by an amount sufficient to create hydrodynamic protective relieving penetrating into the hydraulic lock of the pumping medium, these ledge ring element of the back wall of the shell running part geometrically aligned inner ledge with the radius of a hydroseal, in addition, the lesser of the external radiuses of the specified removable covers, made no less bore radius impeller with capability of the input and output of the last running cavity during installation and dismantling the pump.

13. Constructive-technological model range in paragraph 11, wherein the impeller each representative pump series has attached to the main multiple disk system, curved, at least in the projection on condition plane primary disk blades, separated interscapular channels, and the impeller blades are made of the same or different length, and number of blades impeller made from 3 to 24, preferably, from 5 to 7, with the active volume is dynamically fill in the aggregate interscapular channels includes variant release on duct per rotation of the impeller (5 to 1500)x 10 -5 m 3 /about the pumped liquid.

14. Constructive-technological model range in paragraph 11, wherein the discharge pipe casing flow part, at least, each representative of the pump number is executed in the form of cone with the difference of the squares of the input and output of cross-sections that reduce the speed of injection flow at the outlet of the diffuser 1.2 to 4.0 times.

15. Constructive-technological model range in paragraph 11, wherein the inlet pipe, running cavity, collection and discharge port is placed in the case of a flowing part of the pump series with the formation of a single channel for the flow of fluid in which the supply tube is symmetrical about the axis of the shaft and the lead-in contains the neck radius partially covered in the projections on the condition plane normal to the axis of the shaft to the tip of the blades facing to the specified axis, in addition, running the cavity is made from the back, side and lead-walls, forming large enough to accommodate the impeller and the spiral of the collection, which is made mainly tangentially reported with pressure reducer.

16. Constructive-technological model range on item 11, characterized in that the body chassis, each representative of the pump series is made covering, at least, most of the length of the rotor shaft and the rotor shaft of the pump is made with consoles, the length of one of them, equipped with impeller made not less than two times the length of the other console, and, in addition, radial bearing support, preferably, addressed to the body of flowing part, contains a radial bearing and the other bearing support contains mainly, double angular contact ball bearing.

17. Constructive-technological model range in paragraph 11, wherein the rotor shaft each representative of the pump of series contains the node seals, including housing seals, and consisting of a stuffing box rings, drain plug, fittings supply and removal of cooling liquid and preferably split flange, while if the pump coolant enters the site seal through the bottom fitting and removal carried out through the top of the fitting.

18. Constructive-technological model range in paragraph 11, wherein to eliminate leakage of the fluid on the shaft and through connectors buildings flowing and running parts of the pump installed, o-rings, preferably, of elastic material such as rubber.

19. Constructive-technological model range in paragraph 11, wherein at least a representative pumps series are designed for pumping chemically aggressive liquid media such as acids, alkalis, electrolytes and other with temperatures ranging from 0% to 98'c with hydrogen index 0 to 14 pH, density up to 1870 kg/m 3 , a kinematic viscosity of up to 30 x 10 -6 m 2 /s and solid inclusions up to 1 mm, the volumetric concentration of the latter, not exceeding 5%, or for pumping hot and crystallising liquids with temperature from 0 to 250°C and fire explosive environments, with pumps for pumping mentioned hot and crystallizing media includes heated hydraulics and cooling bearing units.

20. Constructive-technological model range in paragraph 11, wherein many representative pumps series made with the possibility of a power connection to the electric motor, mainly, asynchronous to use the drive, transmitting torque on the rotor shaft of the pump with the provision of frequency of rotation of the shaft impeller, preferably up to 1500 rpm with optional power from 5 to 435 kW, and also possibility of use of electric motors with a number of rpm to 3,000 rpm with optional power from 7.5 to 250 kW, and software when using the mentioned motors variant of delivery of 10 to 1200 m3 /h and pressure of the pumping medium from 10 to 150 m

21. The method of pumping chemical aggressive liquid media such as acids, alkalis, electrolytes or hot and crystallising liquids, and fire explosive environments characterized by the fact that pumping of any of these liquid environments produce no less than one of the pumps constructive-technological model line, made by any of § § 11-20.

 

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