Device for pneumatic transport of powder-like medium from bins of ash-catchers

FIELD: machine building.

SUBSTANCE: in the device for pneumatic transport of powder-like medium, containing source of air excess pressure communicated to receiver, sectional transmission pipe-line with feed pipe of air to its butt, distributive pipe, pipelines for air, electromagnetic valve with control pulse generator, for each bin of ash-catcher there are installed inlet branch pipe with located vertically saddle at outlet port, choke with air feed pipe to choke, located in casing. Bottom cavity of casing is communicated through the reducing sleeve with located horizontally saddle at outlet port, cavity of the second casing - to sectional transport pipeline. In cavity of the second casing there are located the second choke with feed pipe of air to choke. Each pipeline for air by its outlet end is communicated to inlet ends of feed pipes of air to chokes of two casings of each section, and by inlet - to distributional tube. At each choke, at surface adjacent to pipe of air feed it is fixed pressure tube with ability of enveloping by external surface of outlet end of air feed tube to choke at its mixing.

EFFECT: reliability enhancement.

1 dwg

 

The invention relates to the field of power engineering and can be used for pneumatic conveying of powdered environment from bins or other containers for storage.

A device for the pneumatic conveying of powdered medium containing hopper, communicated through a section of pipe with the tank, the bottom of which there is a host of fluidization, which has the piece that connects the cavity with the first section of the transport pipe; this section contains in the lower part of the ascending part of the pipeline site of fluidization, and the top - communicated with site drainage pseudoviruses air [1].

The disadvantage of this device is the inability of the pneumatic transport over significant distances, the design complexity, low reliability, a significant flow of gas to the powder fluidization medium.

The closest to the technical nature of the present device is a device for the pneumatic conveying of powdered environment from bins of ash collectors containing a source of positive air pressure, sectional transport pipeline, receiver, solenoid valve with a source of timing pulses, distribution tube, the tube supplying air to the end of the transport piping, air piping, for each bin ash - inlet pipe with a saddle on the output hole, the valve with a pipe supplying air to the valve accommodated in the housing, the lower cavity is connected to the transport pipe, sectional associated with bins of ash collectors through the cavity of the above-mentioned housings with dampers and referred to the input sockets. Each valve is mounted for movement on the saddle inlet pipe to the outlet end of the tube for supplying air to the valve, the inlet end of the tube for supplying air to the transport pipe is connected through a distribution tube with the input ends of the tube, the air supply to the valve, air piping and through the solenoid valve with the receiver, the transport pipeline along its length is connected to the bunkers through the cavity housings with dampers and inlet nozzles, the output ends of the tubes that deliver air to the valves in the casings for each bin is connected to the air piping along its length [2].

The disadvantage of this device is the low reliability of the pneumatic transport over significant distances for large hydraulic diameters of the input sockets and transport pipeline, due to the partial inverse "leakage" of air and powdered medium in the bunker.

The technical result of the invention is to increase reliability and length of pneumatic transport.

This technical result to thetsa fact, in the device for pneumatic conveying of powdered medium containing a source of positive air pressure, a receiver, an electromagnetic valve with a source of timing pulses, distribution tube, the tube supplying air to the end of the transport pipeline, for each bin ash - inlet pipe with a saddle on the exit hole of the valve with the air supply pipe, accommodated in the housing, transport pipes, sectional associated with bunkers, ash catchers, each flap section is set to move from seat inlet pipe to the outlet end of the tube for supplying air to the valve, the inlet end of the tube for supplying air to the transport pipe is connected through the distribution tube and solenoid valve with a receiver, optionally in each section for hopper ash put pressure tube for each valve, a reducer with a saddle on the exit hole, the second valve with the air supply pipe, placed in the second case, the air piping, which output end is in communication with the inlet ends of the tubes that deliver air to the valves of the two housings each section and input from the distribution pipe, and the inlet communicated with the transport pipeline sequentially through the housing cavity, transient the first pipe, the second building, on each flap on the surface adjacent the air supply pipe fixed pressure tube with wrapping on the outer surface of the output end of the tube for supplying air to the valve when moving in each section of the saddle inlet pipe is placed vertically and the seat of the reducer is placed horizontally.

Device for pneumatic conveying of powdered environment shown in the drawing and includes a source of positive air pressure /not shown/provided with a receiver 1, a sectional transport pipe 2 pipe 3 for supplying air to his face, the distribution tube 4, the piping 5 for air, the electromagnetic valve 6 generator 7 control pulses.

For each bin 8 ash installed inlet pipe 9 disposed vertically saddle 10 on the exit hole, the valve 11 with a pipe 12 for supplying air to the valve accommodated in the housing 13, the lower cavity which is communicated through a reducer 14 with horizontally placed saddle 15 on the output hole, the cavity of the second housing 16 - sectional transportation pipeline 2. In the cavity of the second housing, the second valve 17 with a pipe 18 for supplying air to the valve. Valves 11, 17 of each section is set to move from the seat with the NGO 10, 15 to the output ends of the tubes 12, 18 of the air supply to the valves. Each pipeline 5 to the air outlet end communicated with the inlet ends of the tubes that deliver air to the valves of the two housings each section and input from distribution tube 4. On each flap 11, 17 on the surface adjacent the air supply pipe fixed pressure tube 19 with a wrapping on the outer surface of the output end of the tube for supplying air to the valve when it is moved.

The operation of the device is as follows. Powdered medium in each section is fed from the hopper ash through the inlet with vertical saddle, defining the opening of the bore in the vertical saddle 10 valve 11. Next, the powdery medium enters through the hole of the horizontal seat 15 in the transport pipe 2 and fills the volume of the section due to gravitational forces. In the same way is filling in sections of other bunkers of ash collectors.

After completion of the filling cycle powdered environment sections of the transport pipe 2 by the generator 7 of the control pulse signal is formed at the opening of the electromagnetic valve 6, which determines the pulse emission portion of the compressed air /gas/ to the end of the transport pipe 2 and pulse effects on portions of poroscopy the Noah environment in the transport pipeline. Almost simultaneously with the opening of the electromagnetic valve 6 compressed air flows through each pipe 5 for air to the output ends of the tubes 12, 18 supply air to the valves 11, 17, which are covered in this moment /when the valve is open/ on the outer surface of the discharge tube 19. In the cavity of the pressure tubes is formed by pulse pressure corresponding to the working pressure in the receiver that causes rapid overlapping holes seats 10, 15 and exception back to the passage of air and powdered environment section of the transport pipe in the cavity of the hopper 8 ash. In addition, the compressed air coming from the pressure tube of the second housing 16, when in the transport pipeline divides pornobrazil the formation of a powdery medium into portions, thus reducing the required shearing force pornobrazil formation along the length of the transportation pipeline /reaching 20 m/.

The compressed air coming from the pressure tube housing 13 forms in the cavity of the transition valve 14, the shutter of the powdery medium to close valve 11 and exceptions reverse emission into the cavity of the hopper 8 ash.

Use for submission of pulse pressure on the closure flaps separate piping 5 for air in each section increases the reliability condition the device. For example, in the case of filling powdered medium in one of the sections of pipe air 11, 18 upon receipt of pulse pressure on the overall pipeline 5 for air pulse-jet /due to the redistribution of resistance/ will be carried out only in sections with tubes for air 11, 18, blank powder-like environment that will create an emergency situation.

Thus, by introducing a pressure tube for each of the reducer valve seat on the outlet opening of the second valve with the air supply pipe, placed in the second case, air piping for each partition is achieved by improving the reliability and the possibility of increasing the length of the pneumatic transport.

Sources of information

1. RF patent №2164491, B65G 53/16, 1998

2. RF patent №2324638, B65G 53/04, 2006

Device for pneumatic conveying of powdered medium containing a source of positive air pressure, a receiver, an electromagnetic valve with a source of timing pulses, distribution tube, the tube supplying air to the end of the transport pipeline, for each bin ash - inlet pipe with a saddle on the exit hole of the valve with the air supply pipe, accommodated in the housing, transport pipes, sectional associated with bunkers, ash catchers, each barrier is in section mounted for movement on the saddle inlet pipe to the outlet end of the tube for supplying air to the valve, the input end of the tube for supplying air to the transport pipe is connected through the distribution tube and solenoid valve with a receiver, characterized in that it further in each section for hopper ash entered the reducer seat on the exit hole, the second valve with the air supply pipe, placed in the second case, the discharge tube for each damper, air piping, which output end is in communication with the inlet ends of the tubes that deliver air to the valves of the two housings each section and input from the distribution pipe, and the inlet communicated with the transport pipeline sequentially through the cavity of the housing of the reducer, the second housing, each flap on the surface adjacent to the air supply pipe, fixed-mentioned discharge tube with wrapping on the outer surface of the output end of the tube for supplying air to the valve when moving in each section of the saddle inlet pipe is placed vertically and the seat of the reducer is placed horizontally.



 

Same patents:

FIELD: metallurgy.

SUBSTANCE: invention is provided for continuous transport of small-grained or collector dust by means of transport environment to consumption places. Facility contains distributive tank and connected to it transport pipelines of mentioned solid material. Distributive tank is implemented in the form of overhead tank (1) with feeder in the top part and ring header (4) and sprayers (13) in its bottom part. In internal cavity of overhead tank (1) it is located guide vane with input convergent tube (8). To smaller basis of convergent tube (8) it is joined parallel portion, installed with radial clearance with ability of vertical displacement by means of co-axial installed rod (12) in directed upwards by bottom sleeve (9). To the sleeve bottom (9) there are joined pipelines (10,11) of initial material transportation, which come into wall of cylindrical water-cooled nozzle (14), fixed before plasmatron anode jet (15).

EFFECT: productivity improvement at continuous transporting of solid material directly into the metal melt at operation of plasma smelting furnace.

1 dwg

FIELD: transportation.

SUBSTANCE: invention refers to air transportation of loose materials, namely to machines for continuous air transport of loose materials, and can be used at loading and unloading operations in different branches of industry. Machine consists of chamber feeder, lock chamber in a form of bunker and located between them device for material supplying from the zone with one pressure to the zone with the other pressure. The device is performed in a form of horizontally located cylinder with unloading opening with moving piston rigidly connected with the rod with the possibility of horizontal movement. Chamber feeder is equipped with additional opening located symmetrically to the existing opening in relation to vertical axis. The said cylinder is equipped with additional unloading opening located symmetrically in relation to the existing unloading opening of this cylinder. Cylinder unloading openings are located in relation to chamber feeder openings. The cylinder has spring-operated valve at the ends. Between the valves there is the said moving piston.

EFFECT: invention provides improvement of production capacity.

2 cl, 1 dwg

FIELD: agriculture.

SUBSTANCE: loading device includes the mixing chamber established in it a frame with trays, baffle plate, located at the entrance of the mixing chamber, and an entrance gate which diverts the materials duct, made in the form of an ellipse. The trays located on the frame, have a rear and front formations and the cross-section in the shape of a horseshoe. The bases of the front forming trays end with the rounded off free consoles, whose edges are located below the bases of the rear formations. To the bases of the rear formations of all the trays are attached to spring-controlled air-directing blades. The convex sides of the blades by means of adjusting screws are in contact with the beams placed between the formations of the tray. The baffle plate is supplied with an adjusting device, has spring-controlled, and its edge is located in the region of the second tray. The device is easily built in the construction of the combine harvester in place of the grain screw conveyor.

EFFECT: increase of efficiency of the reception of the material into the divertive material duct.

4 dwg

FIELD: transportation.

SUBSTANCE: device contains a mixing chamber incorporating the frame with the p-shaped trays arranged on the frame in a row. The mixing chamber inlet has a deflector hood with the radius of curvature of 2 to 3 diameters of the air duct with a half of its arch representing the cantilever which edge is located below an axial line of the material feed duct and covering a preset number of trays. The end of the hood other half is between screw clamps at the level of the mixing chamber central part where the arch of second half part is located in the air feed duct space and is placed in elastic guides arranged in the air feed duct wall. The said frame contacts both end face walls of the chamber having vertical grooves and clamps for its installation.

EFFECT: increase in efficiency and reliability of loading of loose material.

4 dwg

FIELD: transportation.

SUBSTANCE: in the device for pneumatic transportation of powdery substances from underground ash collectors, for each bunker, there are inlet branched pipes with a saddle on the inlet hole, trap with an air supply pipe, all mounted in a case. The case is joined to the transport pipe through the lower cavity. Each trap is installed in such a way that it can move from the saddle of the inlet branched pipe to the outlet end of the air supply pipe of the trap. The inlet end of the air supply pipe to the transportation pipe is joined through a distributing pipe, to the inlet ends of the air supply pipe of the trap and an air pipe, and through an electromagnetic valve to the receiver. The whole length of the transportation pipe is joined in sections, to the underground ash collector through cavities on the cases with traps and inlet branched pipes.

EFFECT: invention increases the range of pneumatic transportation.

1 dwg

FIELD: pneumotransport.

SUBSTANCE: invention relates to discharge of loose materials, such as alumina, cement or other aggressive dust forming materials from flexible container by means of compressed air. Proposed chamber feeder has intake chamber with cover, discharge pipeline with intake branch pipe, and discharge nozzle with knife device. Flexible container is placed in intake chamber. Intake branch pipe is installed for free travel along discharge pipeline being furnished with knife device to cut upper part of flexible container. Discharge pipeline is furnished with intake branch pipe travel stop. Intake branch pipe installed for movement in discharge pipeline at aeration of material in process of delivery of compressed air through discharge nozzle into intake chamber provides its lowering to into material layer to close to discharge nozzle. Such free travel of intake branch pipe provides maximum capacity of chamber feeder.

EFFECT: reduced power consumption for bringing material out of chamber feeder, increased reliability of its operation.

5 dwg

FIELD: power engineering.

SUBSTANCE: proposed method of pneumatic transportation of powder-like medium from hoppers of ash collectors comes to delivery of powder-like medium from hoppers into transport pipeline through inlet valve and acting onto surface of inlet valve by pneumatic impulse to close valve by pneumatic impulse to close valve and shaft powder-like medium along transport pipeline under action of pneumatic impulse. When implementing the method, air flow of total volume forming said pneumatic impulse is divided into two parts executing preliminary action of smaller part of total volume onto surface of inlet valve and subsequent action of remaining volume of air onto powder-like medium along transport pipeline. Pneumatic impulse delivery frequency is chosen depending on value of impulse pressure in transport pipeline.

EFFECT: increased length of transportation lines.

1 dwg

FIELD: non-ferrous metallurgy.

SUBSTANCE: invention relates to equipment for pneumatic transportation of loose materials in non-ferrous metallurgy, particularly, alumina and it can be used in other industries. According to proposed method pneumatic transportation of loose materials is provided in dense layer built by means of pneumochamber pumps. Method includes delivery of additional air into transported material through aerating pipe placed inside transportation pipeline. Additional aeration air is supplied on curvilinear sections of aerating pipe at turning of transportation pipeline in horizontal plane in seven cross sections of said pipe and in 2-5 points of said sections, at turning of transportation pipeline in vertical plane with output to its vertical in ten cross sections and in 2-4 points of said sections, and at turning of transportation pipeline in vertical plane with output to horizontal, in seven cross sections and 2-6 points of said sections. Holes to deliver additional air are made in left-hand or right-hand lower quarter of said pipe to the left or right, accordingly. At arrangement of curvilinear section of transportation pipeline in vertical plane with output to vertical and to horizontal, holes are made in aerating pipe with arrangement symmetrically relative to vertical axis of corresponding cross sections of said pipe.

EFFECT: reduced velocity of transportation of loose materials with reduction of grinding of transported material, reduced consumption of compressed air for transportation, improved efficiency of transportation process.

4 cl, 3 tbl, 32 dwg

FIELD: mechanical engineering; pneumotrasport.

SUBSTANCE: proposed pump has chamber 1 with charging valve 2 and compressed air release valve 3 and the following devices arranged in chambers: aeration device 4 with pipeline 5 with compressed air inlet valve 6, pipe 8 furnished with restrictor 7 for discharge of aerated material, and compensating pipe 10 with end 9 open from side of charging valve 2, said pipe being furnished with antechamber 11. Antechamber 11 is coupled through check valve 15 with pipeline 5, is provided with nozzle 13 with turbolator 14 arranged before inlet 12 of pipe 8. Aeration device 4 is essentially multinozzle device with nozzles selectively furnished with turbolators.

EFFECT: provision of stable operation of pump at reduced flow rate and pressure of compressed air owing to decreased resistance of medium.

15 cl, 15 dwg

FIELD: transportation of loose materials.

SUBSTANCE: proposed feeder contains rectangular section confuser-diffuser housing with feed port in zone of mating of its confuser and diffuser parts. Charging funnel with control gate arranged in lower part of funnel is placed over feed port. Hosuing is connected by its confuser and diffuser parts with confuser and diffuser which are connected, accordingly, with air duct and material duct of plant. Louver grating is arranged in housing over its entire width under feed port in diffuser part, louver slats being tilted in direction of transportation of material. Turnable valve is installed for turning on end part of louver grating over entire width of housing.

EFFECT: reduced losses of air pressure for accelerating particles of material to be transported after its delivery into feeder, reduced specific power losses of pneumotransport plant.

2 cl, 1 dwg

FIELD: transport.

SUBSTANCE: invention refers to the area of pneumatic transport of powdered hard material. Plant is designed for the continuous feed of powder hard material from the service tank (10) into the pneumatic transport pipeline (12, 12'). This plant contains the first (14) and the second (16) intermediate tanks installed near each other. The first intermediate tank (14) is built in the form of sluice tank with the upper sluice valve (18) and the lower sluice valve (20). The second intermediate tank (16) is built in the form of injection tank. Between the lower sluice valve (20) of the first intermediate tank (14) and the upper inlet (30) of the second intermediate tank (16) the system (50) of intermediate pneumatic transport is located to transmit the powdered hard material from the first intermediate tank (14) into the second intermediate tank (16). System (50) is provided with the device for material fluidisation.

EFFECT: provides simplification of construction.

9 cl, 1 dwg

FIELD: metallurgy, chemical construction and other industries.

SUBSTANCE: invention relates to pneumatic transport and it can be used in handling of hot and cold loose materials. Proposed device for pneumatic transportation of loose materials contains air line with holes consisting of separate links laid inside transport pipeline. Pressure and thrust members for air line are hermetically mounted in holes in bottom of transport pipeline and are arranged in its inner space. End of air line provided with shutter. Initial section of each link is made in form of outer conical surface, and end is furnished with bell-type branch pipe with inner conical surface. Conical surfaces widen in direction of air flow. Longitudinal slots forming holes for air line are made on conical surface of each link.

EFFECT: reduced abrasive wear and power consumption at transportation of loose material, improved reliability of device, enlarged sphere of application.

4 cl, 7 dwg

FIELD: transportation of loose materials.

SUBSTANCE: proposed feeder contains rectangular section confuser-diffuser housing with feed port in zone of mating of its confuser and diffuser parts. Charging funnel with control gate arranged in lower part of funnel is placed over feed port. Hosuing is connected by its confuser and diffuser parts with confuser and diffuser which are connected, accordingly, with air duct and material duct of plant. Louver grating is arranged in housing over its entire width under feed port in diffuser part, louver slats being tilted in direction of transportation of material. Turnable valve is installed for turning on end part of louver grating over entire width of housing.

EFFECT: reduced losses of air pressure for accelerating particles of material to be transported after its delivery into feeder, reduced specific power losses of pneumotransport plant.

2 cl, 1 dwg

FIELD: material handling facilities; pneumatic transportation.

SUBSTANCE: according to invention, tightness of pneumatic transportation plant is checked before starting and periodically in process of operation by creating vacuum gauge pressure of at least 0.08 MPa in pipeline and air line by vacuum pump, and residual pressure not higher than 0.02 MPa in unloader with subsequent revealing degree of air suction after closing of evacuation line. Reduction of vacuum gauge pressure in 10 min in pipeline should not exceed 0.005 MPa and in air line, not exceed 0.02 Mpa and rise of residual pressure in unloader should not exceed 0.0025 MPa in 5 min.

EFFECT: provision of reliable tightness of system and drying the system before starting and in process of operation.

3 cl, 1 tbl, 4 dwg

FIELD: pneumatic transport facilities.

SUBSTANCE: invention is designed for transportation of loose materials. Proposed plant for handling caking and lump powder materials has discharge device with ripper for breaking bridge formed in container, charger with bucket-wheel feeder for breaking lumps, reception of uniform dispensing, device for rubbing through and bringing material into aerated state in aerochamber combined with rubbing through device. According to invention, discharge device is essentially hydraulic cylinder on rod of which platform is secured with fitted on drive whose output shaft is connected with vertical shaft of ripper. Ripper is installed for lowering by means of hydraulic cylinder with cut-in drive and automatic movement upwards after reaching of limit switch in lower position with subsequent disconnection of ripper drive. Charger consists of cylindrical housing, upper cover, pneumovibrator with screen and aerobottom. Pneumovibrator of screen is brought out of housing behind its wall through flexible diaphragm flexible diaphragm. Aerobottom of charger is truncated cone lined from inner side with gas distributing needle-pierced rubber cloth and divided by means of pressure strip into two horizontal sections, each provided with union to feed compressed dried air. Upper cover is provided with charging hatch and branch pipe with filter to let out air into wet dust trap system. Rubbing through device consists of cylindrical housing with round holes in lower part and shaft passing in center of housing with elastic blades attached to cross-members to adjust distance from blades to wall of housing equipment with receiving hopper enclosing over perimeter part of housing with holes and assembled with said aerochamber for fluidizing said material getting into said pipeline.

EFFECT: provision of stable and unfailing operation of plant.

3 cl, 4 dwg

FIELD: pneumatic transport.

SUBSTANCE: proposed device 2 for delivering stiff loose material into delivery pipeline has swirl chamber 4 made for connection of feed pipeline 6 from outside and forming inlet hole 8 for loose material in side wall of swirl chamber 4, and also device to build gas flow inside swirl chamber 4 which is directed to side of said inlet hole 8. Porous plate is fitted in side wall of swirl chamber 4 additionally close to periphery of inlet hole 8 through which loosening gas can be delivered into swirl chamber 4.

EFFECT: prevention of formation of material bridges in zone of inlet hole.

10 cl, 5 dwg

FIELD: pneumatic conveyance method used, in particular, for removal of ash from heat-electric generating stations.

SUBSTANCE: method involves supplying air in upward conveyance path and moving powdered medium through conveyance pipeline by initially providing pneumatic pulse in upward direction to inlet valve at this path for enabling feeding of powdered medium to inlet portion of conveyance pipeline; providing action of pneumatic pulse upon this valve for closing thereof and moving powdered medium through conveyance pipeline. Inclined pipeline used as inlet portion has volume equal to or less than volume of receiver used for creating of pneumatic pulse enabling closing of inlet valve and feeding of powdered medium to conveyance pipeline.

EFFECT: increased distance of conveying materials, enhanced reliability in conveyance of materials and reduced consumption of gas.

3 dwg

FIELD: pneumatic conveyance system used, in particular, for removal of ash from heat-electric generating stations.

SUBSTANCE: apparatus has electric valve connected with its winding to pulse generator, and powdered medium flow forming device. The latter includes upright casing with valve having seat, two axially aligned air supply pipes and powdered medium discharge branch pipe, which are disposed in lower end of upright casing. First air supply pipe is introduced through upper end of casing into its cavity above valve, and outlet end of second pipe is introduced into cavity under valve, which is mounted for displacement in vertical plane between outlet ends of first and second pipes. Inlet end of first pipe is connected through upper cavity of unit defined by piston and through receiver with excessive air pressure source, and inlet end of second pipe is communicating through aperture of upright casing of said unit, said aperture being closed with piston, through lower cavity of upright casing of this unit and electric valve to excessive air pressure source. Upper part of inclined portion of apparatus is connected through powdered medium discharge branch pipe to cavity above valve of flow forming device and lower part is connected with conveyance pipeline.

EFFECT: increased distance of conveying materials.

1 dwg

FIELD: power engineering.

SUBSTANCE: proposed device contains service tank with two valves. Upper valve of service tank is normally open, and lower one is normally closed. Tubular shanks are connected coaxially and hermetically to lower surfaces of each valve. Each shank is installed for vertical shifting onto corresponding outlet end of pipe for impulse delivery of gas. Hydraulic restrictor is installed at outlet end of pipe for impulse delivery of gas.

EFFECT: increased distance of transportation of powder-like material.

1 dwg

The invention relates to the field of power engineering

FIELD: power engineering.

SUBSTANCE: proposed device contains service tank with two valves. Upper valve of service tank is normally open, and lower one is normally closed. Tubular shanks are connected coaxially and hermetically to lower surfaces of each valve. Each shank is installed for vertical shifting onto corresponding outlet end of pipe for impulse delivery of gas. Hydraulic restrictor is installed at outlet end of pipe for impulse delivery of gas.

EFFECT: increased distance of transportation of powder-like material.

1 dwg

Up!