Process complex for unloading and carrying sand-gravel mix to sand-gravel classification circuit with separation of graded sand and gravel

FIELD: transport.

SUBSTANCE: invention relates to mechanised complexes for unloading, grading and carrying of loose cargo. Proposed complex comprises hydro scheme 1 with underground pump 3 with intake branch pipe 6 and casing 12, hydraulic cyclone, hydraulic screen 35 and hydraulic classifier 34. Tube to feed water for sand-gravel mix wash-out is connected to outer side of casing 12. Hydraulic cyclone communicates with hydraulic classifier inlet via damper 37 wherein said is separated into two fractions. Gravel is graded into three different factions and fed onto belt conveyors.

EFFECT: higher efficiency of sand-gravel mix unloading, carrying and grading.

5 cl, 1 dwg

 

The invention relates to hydraulic systems for unloading bulk cargo, as well as to a device for unloading sand from barges in the production of dredging on water and equipment for hydraulic classification.

Known hydromechanical system for unloading bulk cargo containing vehicle with the installed pipeline and a winch for lifting the suction pipe. Water pump mounted on the rotary platform mounted on the boom and the counterweight, and the lower part of the inlet tube perforated holes and provided with a hermetic casing, concentric covering this part of the suction pipe, the internal cavity of the pressure-tight casing connected to the pipe, the free end of which is omitted in the reservoir, the horizontal sections of the suction pipe and tubing placed coaxially relative to each other and can be rotated in bearings mounted on the boom, the suction nozzle is provided with an insert can be rotated in relation to the horizontal part of the suction pipe and the discharge pipe with the soil pump is connected by a vertical box with a possibility of rotation relative to it ground the pump, the discharge pipe which is placed on the axis of rotation of the platform, moreover, the suction pipe and the pipe are connected by a jumper, one flexible element through the deflecting unit is connected with a drum winch, mounted on the boom (patent RU, 2287473, 2006.11.20).

A disadvantage of the known technical solutions when it is used as a hydro-mechanical system is what's on the inside of the casing occurs is not constant depression because of the different density of the mixture that does not provide a systematic suction intake of water from the reservoir and, therefore, reliable transportation of slurry on the entire tract. This disadvantage is solved by the patent "Device for unloading sand and gravel" No. 2409510, authors Lyubchenko, L.P. Chernigovskogo S. Kaliev Known ore processing sand on the Ivanovo career in Kyrgyzstan and is the closest of the present invention to the technical nature. Khrustalev M.I. Best practices enrichment of sand. Analytical review. M., 1990.

The original pulp is fed to the installation from the dredge pipeline in conical hydrograhic, where there is a clearing sand from the gravel. Gravel is served on the deck which is shipped to customers. Sandy pulp is sent to hydroclassification, where is the separation of sand by grain boundary of 0.4 mm coarse sand, about 30% goes to the spiral classifier, which is dehydrated to ransporting humidity 14-18%. Hence enriched sand goes on the belt conveyor, which delivers it to the spinal warehouse with locking base. The small fraction of sand in the form of a slurry by gravity is served on the card and Deposit it through sandoria wells developed in the space where it is lightening and then fed in a circular system.

The disadvantage of this scheme is that the separation of sand in hydroclassification is inaccurate, as the inevitable changes in dredge affect the stability of the regime of hydroclassification. Therefore, a large fraction remains approximately 30% of grains less than 0.4 mm, and this scheme only allows you to clear the sand from the gravel, but you can't get graded gravel.

The aim of the present invention is to combine the two earlier inventions, authors Lyubchenko, L.P., Chernigovskogo S. Kaliev in a single technological complex, which practically can only be applied together:

1. Patent No. 2409510 "Device for unloading sand and gravel"

2. Patent No. 2400304 "classification Scheme of sand and gravel emitting fractionated sand and gravel". As well as the aim of the invention is to provide a full discharge and transportation of sand and gravel from barges on the classification scheme of the sand-gravel mixtures and emitting fractionated sand and gravel, as well as raising productivity and efficiency of the allocation process fractionated sand and gravel.

This goal is achieved by the fact that known technological complex for unloading sand and gravel on the classification scheme of the sand and gravel mixture with the release of graded sand and gravel, located on the hydraulic structure with installed groundwater pump with suction pipe, discharge pipe, the supply pipe for the washing of sand and gravel, mounting : mast, the winch to rotate the suction nozzle according to the invention priming pump is mounted on a rotatable platform mounted on it mounting : mast and the counterweight, and the lower part of the suction pipe is equipped with a casing, concentric covering this part of the suction pipe, to the outside casing is connected a pipe for supplying water from the bottom of the casing arranged nozzles for washing sand and gravel, while the horizontal sections of the suction pipe and the inlet pipe of water for washing sand and gravel are parallel relative to each other and can be rotated in bearings mounted on mounting : mast, the suction nozzle is provided with an insert can be rotated in relation to the GRU is starting pump, the discharge nozzle which is placed along the axis of rotation of the pad. Moreover, the suction nozzle through the deflecting unit is connected with the drum winch mounted on the mounting : mast, and a control panel mounted on the rotary platform.

Also the objective is solved by the technical result is to increase the efficiency of the hydrocyclone classifier and respectively using hydroclassification, simple design of the device.

This technical result is achieved by the fact that the hydrocyclone classifier, comprising a cylindrical housing containing a tangential inlet and drain pipes, sand hole, according to the invention for useful model №76523, authors Lupulina, Schernewski contains hermetically connected to the cyclone vortex chamber including a cylindrical body with an angle of taper 90-150°, including inlet tangential inlet connected with the means of supplying water, and the conical hydrocyclone part descended into a vortex chamber to a depth of 3/4 of its cylindrical part, and the ratio of the square cross sections of the cylindrical parts of the vortex chamber and the cyclone is 1:(4-5), and the ratio square sections of gravel supply inlet of the vortex chamber and the sectional area of the sand hole at back the Oia hydrocyclone is respectively 1:1,5:5,5. Conical part of the cyclone has an angle of taper 10-90°. The specified ratio of the parameters of the hydrocyclone and the vortex chamber in a vortex chamber for required thermal output particles of the solid phase of a given size through the drain pipe in the hydrocyclone.

This technical result is also achieved by the fact that the applied hydroclassification equipped with vortex chambers according to the invention No. 240979, authors Lupulina, Schernewski that play a major role, where due to the tangential water flow in the vortex chamber is formed of a rotating vortex flow of water, which greatly enhances the camera upward flow of water in the conical part of the classification chamber and lifts up higher education "boiling layer", respectively, by increasing the size of the formation of grains of a given faction in fluidised bed combustion, which contributes to a large settling them in the vortex chamber, thereby increasing the performance of hydroclassification. Height forming a fluidized-bed will not depend on the pressure of the slurry at the inlet of hydroclassification.

This goal is solved by the fact that applied mnogozhestovy hydrograhic sorting the gravel on three different fractions with additional washing. To prove compliance Savino what about the invention, the criterion of "inventive step" was compared with other technical solutions, known from prior art. The claimed invention meets the criterion of "inventive step", as it ensures full discharge of sand and gravel from barges with reliable transportation for the discharge pipeline from the classification of sand and gravel and the allocation of graded sand and gravel, and also provides increased performance and efficiency of the fractionation process of sand and gravel that should not be explicitly known "prior art". Technological complex unloading of sand and gravel with the classification of sand and gravel and allocation fractionated sand and gravel and its subsequent variants are industrially applicable.

Technological complex for unloading and transportation of sand and gravel on the classification of sand and gravel emitting fractionated sand and gravel shown in the drawing, the cross-section.

Technological complex consists of hydraulic structures 1, is installed on the rotary platform 2 mounted on it, the soil pump 3, mounting : mast 4 and the counterweight 5. Water pump 3 provided with a suction pipe 6 G-shaped discharge pipe 7 to feed him slurry to the cyclone 31, location the config on the shore 8 of the reservoir 9. The suction pipe 6 is made with the possibility of placing it inside the barge 10 with sand in the form of slurry 11. The lower part of the suction pipe 6 provided with a casing 12, concentric covering this part of the suction pipe 6, the bottom of which is located a nozzle 13 for washing sand and gravel and the pipe 14 for supplying water for washing. Water flow is from the pump station 27 via the control valve 22. The water flow is controlled by flow meter 23, the device 21 is used to measure the discharge pressure of the circulating water. The bottom cover 12 has a protective grid 15. Horizontal sections of the suction pipe 6 and the pipe 14 is placed in parallel relation to each other and have the ability to rotate in the bearings 16 mounted on mounting : mast 4. The suction pipe 6 is equipped with an insert 17 can be rotated in relation to the horizontal part of the suction pipe 6. Injection pipe 7 with the soil pump 3 is connected by a vertical box 18 and is able to swivel in relation to the soil of the pump 3, the discharge nozzle which is placed along the axis 19 of rotation of the platform 2. The rotation of the suction pipe 6 is provided a drum winch 20, through the deflecting unit 24, a flexible element 26 attached to the axis, located on the vertical portion of the pipe 6. The pulp line 29 connected to the N. from the upper tangential inlet hydroclassification 31, representing the hydrocyclone classifier containing the drain pipe with drainage pipelines, and through control valves connected to the input of hydroclassification 34 through the damper device 37, within which is fitted with removable sieve.

The swirl chamber 32 is a hydrocyclone, which are connected in series through the slurry outlet of the apparatus 31 and is both a drain channel of the device 31 in the pipe 30 is installed a flow meter 23, and a device for measuring the discharge pressure of the circulating water 21 and control valve 22. The swirl chamber 32 has an outlet for the yield of the target fraction for the pipe 38 and the sliding valve 40 in hydrograhic 35. Cone of hydroclassification 34 contains a damping device 37. At the bottom of the conical part of the damper device 37 has an inlet fitting connecting hydroclassification 34. Hydroclassification 34 through pipe 42 connected to the swirl chamber 33. The swirl chamber 33 has an outlet for the yield of the target fraction of the product in the pipe 39 and the gate valve 41 on the map reclamation of sand 49 and the outlet 36 connected to the branch water main through the flow meter 23, the device for measuring the discharge pressure of the circulating water 21 and valve 22. Hydrograhic 35 allows manufacturers the shape sorting gravel into three fractions from 40-20 mm, 20-10 mm, 10-5 mm Belt conveyor 43 is used to receive a large fraction of gravel and feed on map 46 of the finished product. The conveyor belt 45 is used to receive the average fraction of gravel and feed on map 47 of the finished product. Belt conveyor 44 is for receiving small fractions of gravel and feed on map 48 of the finished product.

Technological complex works as follows.

Arrived with a sand barge 10 is moored to the hydraulic structure 1. On the remote control 52 establish certain by calculation, the values of the volumetric flow rate of water supplied to the vortex chamber 32 of the hydrocyclone classifier 31 and a vortex chamber 33 hydroclassification 34. At the same time the pipeline 29 water is supplied through the hydrocyclone 31 through the pipe 36, through which the damper device 37 enters hydroclassification 34. When the tightness of all piping and equipment installation, water should come only from the output of the pipes 38, 39. After all the preparatory activities give the command to the feed slurry. After mooring the barge 10 begin the reversal of the rotary platform 2 in a horizontal plane about the axis 19 and the suction nozzle 6 is lowered into the barge 10, and then include priming pump 3 on the remote control 25. At the same time water is pumped from the pumping station 27 through pipe 28 through regularuse the valve 22. The water flow is controlled by flow meter 23. Through the suction pipe 6 of the slurry 11 is sucked. Passes through the water pump 3 and the discharge pipe 7 is fed by a slurry pipeline 29 on the classification of sand and gravel. By turning mounting : mast 4 in the horizontal plane and turn the suction pipe 6 in the bearings 16 with a drum winch 20 in combination with the promotion of the barge 10 on hydraulic structures 1, is ensured uninterrupted supply of sand and gravel on the classification. By simply working the soil of the pump 3 in the suction pipe 6 is constantly a vacuum that can capture slurry 11. When working the soil of the pump 3 through the pipe 14 water is pumped into the casing 12 of the cavity And creating pressure with the further release of water through the nozzle 13 for washing sand and gravel. The rotation of the pipe 6 is provided a drum winch 20, installed on mounting : mast 4 through the deflecting unit 24 of the flexible element 26 attached to the axis of the vertical section of the suction pipe 6. The bottom of the casing 12 of the suction pipe 6 from inclusions provided protective grid 15. Insert 17 and 18 provide for manipulation of the suction pipe 6 during the unloading of the barge 10 and the counterweight 5 provides the trim Assembly is trenovoy mast with 4 fixed thereto a suction pipe 6 and the pipe 14 water supply for washing sand and gravel.

The slurry is transported through pipeline 29 to the tangential inlet of the hydrocyclone 31, where it acquires a rotary motion. The slurry is mixed in the stream and due to centrifugal force separating sand from gravel with simultaneous wet otterly grains of sand from the clay inclusions and organic products. The large fraction of gravel, having a large inertial mass and, due to the larger pressure over the cross section of the cone begins to stick to the walls of the cone, where it loses speed and under the action of gravity settles down with the speed of their hydraulic size. Selected gravel served on the screening surface of hidrografica 35. As a result, the gravel begins to move along the upper part of the sieve of hidrografica 35. When driving on the sieve bottom layers of gravel under the action of the upper layers and the influence of its own weight, partially due to friction between the particles of material are held in sieve apertures of a sieve and cut yourself off from the total mass of the colliding streams of water in the form of thin jets emanating from the pipe below the sieve. The thickness of the jets, and hence the size of gravel depends on hole size, flow rate and the thickness of the layer of gravel. By adjusting the flow velocity at the entrance to hydrograhic with a regulating valve 22 on the inlet pipe, it is possible to some extent to control the border section is of the same size of the sieve mesh. Large size gravel (40-20 mm), mixing in the flow over the surface of the sieve, addicted to the discharge pipe, completely liberated from the sand and water, proceed on the conveyor belt 43. Gravel size less than 20 mm) is fed to the second sieve, which also cut off the water jets from the total mass. The size of gravel (20-10 mm), mixing in the flow over the surface of the sieve, addicted to the discharge pipe, completely liberated from the sand and water, proceed on the conveyor belt 45, then on map 47. Gravel size 10-5 mm or less is supplied to the third sieve, the size of gravel (10-5 mm), mixing in the flow over the surface of the sieve, addicted to the discharge pipe, completely liberated from the sand and water, proceed on the conveyor belt 44, and then to map 48. The small fraction of gravel less than 5 mm in the form of a slurry by gravity served on a map of reclamation 30 through sandoria wells in the mined-out area where they are brighter, and then the clarified water is pumped in a circular system. Inside the cone of the cyclone 31 vacuum is formed due to the difference of pressures in the center and on the edges, where the particles are lighter, relating to moulding sand, rise up and are carried through the pipeline 36 for further classification. A slurry consisting of different particles, is transported by pipeline 36 to the input hydroclassification the and 34 through the damping device 37, where the slurry passing through the removable sieve, optionally washed. Water flow in the hydrocyclone classifier 31 through a vortex chamber 32 from the water main 30. When this water is controlled by flow meters 23 and a control valve 22. Thus, in the hydrocyclone 31 separates the source material into two fractions: the upper sand and the bottom of the gravel.

The hindered Sands is as follows: particles of sand, coming in the form of a slurry to the input of hydroclassification 34, deposited in its cylindrical part, where they meet up with an ascending stream of water given speed, calculated for a given classifier, coming from the vortex chamber 33. As the speed of flow of water calculated on the rate of wool maximum particle size contained in a specified allocation fraction particle size distribution of a number of molding sand, and particles which are larger than typical for this faction in the sand mixture are not available, at the level of the junction of the bottom of the classification chamber hydroclassification and pipe 42 to the output of a large fraction of the classification chamber, the deposition rate of particles is suppressed (inhibited) to a value at which large particles may not be made up and hang at a certain height, forming a "fluidized bed", and elkie particles are carried upward flows up, appear in the pipeline at the map of the reclamation 50. As the water enters the tangential inlet into the vortex chamber 33, then, getting to her, she spins, increasing the upward flow of water and thereby raising the height of education "fluidized bed" and accordingly increasing its area. In the process of "boiling" large grain intensively mixed in a horizontal plane across the lower cavity above the pipe 42, seeking evenly distributed and fill all the space formed layer. As well as the speed of the upward flow is equal to speed of wool particles of the maximum size of a given faction, then a layer of these particles starts to grow and increases in thickness, and its permeability to water flow is reduced and there is the possibility of subsidence on the surface layer of smaller particles. This increases the pressure of the water layer and is an imbalance between the mass layer and the water pressure on him, he begins to swell and then pulse breakthrough layer of the water column, together with a rapid decrease in the speed of the upward flow in the surrounding area around the water column and the oscillatory process of levelling the speed of the flow. This vibrational change the water flow rate violates parity wool particles in fluidised bed combustion, and they are uniformly deposited in the form with the provided flow in the pipe 42. At the time of the violation speed of water flow in the conical part of the classification chamber outlet 42 of the vortex chamber, the velocity of large particles contained in the layer, manages to exceed restored to the set value, the speed of the upward flow of water, and they settle in the pipe 42, is picked up by the rapidly rotating flow in the vortex chamber 33, and then through pipe 39 through a gate valve 41 are carried on map 49 as a final product. The particles of smaller size, during the precipitation falling in the restored until the setpoint upward flow of water, do not have time to reach the speed of his deposition more speed coming out of the water stream and are carried upward on the nozzle in a cylindrical praemordellinae camera hydroclassification 34, where the selection of the next predetermined fraction by pipeline map 50 as a final product. Waste water along with dust and clay particles is removed from the card and Deposit it through sandoria wells developed in the space where it is lightening and then fed back to the circulatory system. Thus, the hindered slurry emitting fractionated sand improves the performance of the hydrocyclone on drain solid phase, to adjust the boundary separating particles of solid phase hydro is MESI depending on the concentration of the initial mixture, without changing the geometrical parameters of the hydrocyclone, and used hydroclassification using vortex chamber allows to increase the performance, where the height of the fluidized bed will not depend on the pressure of the hydraulic system at the entrance of hydroclassification.

This technological complex for unloading and transportation of sand and gravel on the classification scheme of the sand and gravel mixture with the release of graded sand and gravel is industrially applicable. The proposed production processing of sand and gravel is a waste, because remaining after enrichment and classification of 3% of the processed raw materials are material for the construction industry.

1. Technological complex for unloading and transportation of sand and gravel on the classification scheme of the sand and gravel mixture with the release fraction sand and gravel containing hydraulic structure with the installed groundwater pump with suction pipe and casing, hydrocyclone, hydrograhic, hydroclassification, wherein the outer side of the casing of the suction pipe connected to the water supply for washing sand and gravel, hydrocyclone sequentially connected to the input of hydroclassification through the damping device, depoisited separation of sand into two fractions, and hidrografia is sorted gravel on three different fractions from the feed belt conveyors.

2. Technological complex according to claim 1, characterized in that the bottom casing of the suction pipe installed protective net.

3. Technological complex according to claim 1, characterized in that the conveyor belt for gravel installed at an angle of not more than 12°, and the width of the ribbon is adopted from the condition of filling the grooved part.

4. Technological complex according to claim 1, characterized in that the lower outlet of the sand at hydroclassification comes to map and Deposit a large fraction of sand, and the upper exit of the sand enters the map of reclamation small fraction of sand.

5. Technological complex according to claim 4, characterized in that the cards alluvium coarse and fine sand, and sludge-equipped filter substrate and the removal of clarified water in the reservoir.



 

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20 cl, 57 dwg

FIELD: mechanics.

SUBSTANCE: invention deals with storing and re-loading packaged cargos. Gravity store for cylindrical container includes feeder for items and tray installed under the feeder. The said tray is provided with uniform tier-structured shelves (2) being hinge-connected between each other. The said shelves can be turned vertically and provided with windows to transfer items from one shelf to another. Tilted guiding shelves are rigidly fixed at a constant angle α, which ensures stable oscillation of items when they are transported with the account of friction forces. The said tilted guiding shelves are implemented as two hinge-connected tilted corners (3) comprised of initial fixed parts (4) and finite movable parts (5) located in front of the loading windows. The above-mentioned movable parts are constricted. The initial parts of corners are provided with grouping flexible rods filled with adjustable liquid. The said rods let the item passing one by one only when the rod is pressed horizontally by no less than two items. Spring-loaded dampers are installed in the transition point of shelves.

EFFECT: solidity of structure and reduced dynamic loads.

2 cl, 1 dwg

FIELD: transport.

SUBSTANCE: proposed complex comprises lifting-and-conveying equipment arranged on the first deck of the section of packing cement compound into barrels, that of the section of settling down the said packages arranged on the second deck, the lifting-and-conveying equipment of the package certification section and package stepwise transfer mechanism. The said first section includes the sections of idler roller conveyor (5-7), package lifting-and-lowering mechanism (9) and assembly (10) to drain cement compound into barrels. The lifting-and-conveying equipment of the second section comprises two-row plate conveyors (43) arranged on both sides of roller conveyor (8) and handling appliances. Package stepwise transfer mechanism (21) comprises the posts with guide rollers arranged nearby the roller conveyor and pushrods for arrangement between adjacent packages.

EFFECT: accurate package positioning, higher safety and reliability.

19 cl, 16 dwg

FIELD: transportation.

SUBSTANCE: proposed method of sorting consists with detachable containers (12) involves breaking-up and sorting consists by way of crosswise movement of wagons (6) from one track to another track of corresponding direction, on which the wagons can move by themselves to the required distance, simultaneously forming new sets on directions. The containers are then detached from the consist, put onto a storage, then removed from the storage and then moved to consists sorted according to direction.

EFFECT: cutting on time spent on delivering containers and accompanying expenses, increased cost competitiveness of railway transport.

1 dwg

Sifting device // 2432214

FIELD: process engineering.

SUBSTANCE: invention relates to sifting device incorporated with wobbler screen to be used in mining for screening such materials as crushed stones or gravel. Sifting device incorporated with wobbler screen to be used in mining for screening such materials as crushed stones or gravel comprises sifting decks arranged at different height and guide plates arranged on sifting deck lower surface to direct sifted material onto sifting deck mounted under every sifting deck. Said plates feature various shape, i.e. flat or curved, or with guide ledges for collection and dispersing the processed material. Said guide plates are arranged on lower surface of sifting deck in turn.

EFFECT: higher sifting efficiency.

12 cl, 8 dwg

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