CN211418924U - Ultra-clean transfer station - Google Patents

Abstract

The utility model relates to an ultra-clean transfer station, which is arranged on a feeding conveyor belt and comprises a feeding device, a soft loading and unloading blanking device and an inertial dust fall guide device which are sequentially communicated from top to bottom, wherein the soft loading and unloading blanking device comprises a comb-shaped guide hopper and a soft loading and unloading blanking pipe which are connected in an airtight manner, a comb-shaped guide baffle plate is arranged in the comb-shaped guide hopper, the soft loading and unloading blanking pipe is arranged in a streamline manner, and the soft loading and unloading blanking pipe is connected with the inertial dust fall guide device in an airtight manner; the inertial dust fall guide device is arranged along the direction of the feeding conveyer belt, and a micro-fog dust suppression device is arranged at the upper part in the inertial dust fall guide device; the transfer station is also provided with a double-cyclone water film dust collector, and an air inlet cover of the double-cyclone water film dust collector is hermetically connected with an inertial dust fall guide device. The utility model discloses reduce the emission of transfer station dust, reduced the impact damage of material to equipment, thereby through the production of the induced wind control dust in the control transfer system, dust removal effect is good, the running cost is low, the maintenance work load is little, essentially no secondary pollution.

Description

Ultra-clean transfer station

Technical Field

The utility model relates to a material conveying system technical field especially relates to coal material conveying system, concretely relates to ultra-clean transfer station.

Background

The transfer station is the key equipment for the efficient operation of bulk cargo conveying systems in the industries of power generation, harbors, metallurgy, mining and the like. The transfer station of traditional design selects the type design according to "DT II type fixed belt conveyor design selection manual" always, has the advantage of making simply, easy to assemble, but has the common problem that influences the safe, high-efficient operation of transfer station such as chute blockage, dust are big, wearing and tearing are big, belt off tracking.

The reasons for problems existing in the transfer station are gradually known by people, however, due to the fact that the movement behavior of coal in the blanking pipe cannot be quantitatively calculated, extreme measures and a local treatment method are often adopted, the problems of coal blockage, large dust, abrasion, deviation and the like cannot be fundamentally eliminated, the safe and economic operation of a power station is seriously influenced, the phenomenon of losing one another is easily caused, and the problem of the transfer station is more complicated. For example, the problems of material blockage caused by vertical blanking pipes, increased pipe diameters, large-area wear-resistant layers and the like are often solved, but series of problems such as easy abrasion of the blanking pipes, large dust, damage of buffer beds, damage of belts, high cost, material scattering caused by flash and the like are caused, and then the problems of new problems are solved by buffering, sealing and pressure relief, so that the problems of transfer points are complicated.

At present, aiming at the dust problem of a transfer station with the traditional design, a dust removal device is usually added at a position with larger dust emission for local treatment. The dust removing device commonly used in the prior belt coal conveying system comprises a bag-type dust remover, electrostatic dust removal, an unpowered dust removal guide chute, spraying dust suppression and the like. The dust removal devices reduce the dust emission of the transfer station to a certain extent, but the impact of materials and the induced wind in the transfer system are not fundamentally controlled as the cause of the dust, so that the problems of weak dust removal effect, high operation cost, large maintenance workload, secondary pollution and the like are caused.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the technical problem who exists among the prior art, provide an ultra-clean transfer station, it has reduced the emission of transfer station dust, has reduced the impact damage of material to equipment, thereby through the induced wind control dust's in the control transfer system production volume, dust removal effect is good, the running cost is low, the maintenance work load is little, essentially no secondary pollution, can satisfy the requirement of environmental protection to dust emission.

The utility model provides an above-mentioned technical problem's technical scheme as follows:

an ultra-clean transfer station is arranged on a feeding conveyor belt and comprises a feeding device, a soft loading and unloading blanking device and an inertial dust fall guiding device which are sequentially communicated from top to bottom, wherein the soft loading and unloading blanking device is in a streamline arrangement and comprises a comb-shaped flow guide funnel and a soft loading and unloading blanking pipe which are connected in an airtight manner, comb-shaped flow guide clapboards which are arranged in a layered manner along the material flow direction are arranged in the comb-shaped flow guide funnel, the soft loading and unloading blanking pipe is in a streamline arrangement, and the soft loading and unloading blanking pipe is connected with the inertial dust fall guiding device in an airtight manner; the inertial dust fall guide device is arranged along the direction of the feeding conveying belt, a micro-fog dust suppression device is arranged in the inertial dust fall guide device, the micro-fog dust suppression device comprises a micro-fog nozzle, and the micro-fog nozzle is arranged at the upper part of the inertial dust fall guide device; the transfer station is also provided with a double-cyclone water film dust collector, and an air inlet cover of the double-cyclone water film dust collector is hermetically connected with the inertial dust-settling guide device.

The beneficial effects of the above technical scheme are: the material gets into from feed arrangement the utility model discloses a transfer station transports the material to the pay-off conveyer belt after soft loading and unloading doffer on, carries next station with the material by the pay-off conveyer belt. The soft loading and unloading blanking device is in a streamline design, and in the process that materials fall from top to bottom, after the materials collide with the interior of the streamline soft loading and unloading blanking device for multiple times, a part of kinetic energy is unloaded, the descending speed of the materials is reduced, and the impact of the materials on a device below the materials is reduced; the soft loading and unloading blanking pipe is in streamline arrangement, so that the fall is reduced, the impact force is reduced, and the dust is reduced and the abrasion to the pipeline is reduced. After the materials reach the feeding conveyor belt, the inertial dust fall guide device controls induced air generated in the falling process of the materials to achieve the dust fall effect; according to the principle that water mist particles with similar particle sizes and dust particles are easy to combine into larger particles to settle, the micro-mist dust suppression device sprays water mist with very small particle sizes to effectively adsorb and condense dust suspended in the air into large particles to settle by gravity, so that an effective dust settling effect is achieved; after the fine mist dust removal, part of low-concentration respiratory dust remains in the air, is extracted by the double-cyclone water film dust collector for further dust removal, and finally is discharged to meet the environment-friendly emission requirement.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Further, soft loading and unloading doffer still is including being screening machine and the breaker that sets up from top to bottom, the feed inlet of screening machine with feed arrangement sealing connection, be equipped with discharge gate and sieve discharge gate on the screening machine, the sieve discharge gate of screening machine with the feed inlet sealing connection of pectination water conservancy diversion funnel, the discharge gate passes through the pipe connection on the sieve of screening machine the feed inlet of breaker, the discharge gate of breaker with inertia dust fall guide device sealing connection. The screening machine is the prior art, it has screen cloth, the material flows to the screen cloth, the small supplies of granule pass the sieve mesh, flow out from the discharge port under the sieve, then buffer and water conservancy diversion through the pectination diversion funnel, discharge to the feeding conveyer belt below through the pipeline of the streamline type again; the big material of granule can't pass through the sieve mesh on the screen cloth, because the screen cloth is the slope setting, the big material of granule rolls to sieve discharge gate, gets into the breaker through the pipeline, unloads after further smashing on the pay-off conveyer belt of below.

Further, a crusher funnel is arranged at a discharge port of the crusher, comb-shaped flow guide partition plates which are arranged in a layered mode along the material flow direction are arranged in the crusher funnel, the comb-shaped flow guide partition plates are arranged to be streamline, and the comb-shaped flow guide partition plates guide the material to the inner wall of the crusher funnel. For the funnel with larger height and transverse dimension, the fall of the materials in the funnel is larger, the falling speed of the materials is high, the impact on the side walls of the funnel and the blanking pipe is larger, and the comb-shaped diversion partition plate arranged in a streamline shape guides the materials to the side walls of the funnel so as to reduce the fall, reduce the impact force and reduce the dust generation and the abrasion on the equipment below.

Further, the inertial dust fall guide device comprises a guide chute body and an inertial dust fall unit arranged in the guide chute body, and the guide chute body is arranged above the feeding conveyer belt and is in sliding connection with the feeding conveyer belt; the inertial dust settling unit comprises a wind resistance curtain and an unpowered dust suppression subunit, and the soft loading and unloading blanking device, the wind resistance curtain and the unpowered dust suppression subunit are sequentially arranged along the moving direction of the feeding conveyer belt; the wind resistance curtain and the unpowered dust suppression subunit are arranged at the top of the guide chute body and naturally droop; the unpowered dust suppression subunit comprises a plurality of flexible wind shielding strips, and the wind shielding strips are arranged in the guide chute body in a labyrinth manner. When the materials are discharged into the guide chute body, the wind blocking curtain slows down and buffers induced wind, and the airflow is diverted to make large-particle dust deposited by inertial collision; the wind-shielding strips are multi-edge rubber strips, and a plurality of wind-shielding strips arranged in a maze are suspended at a material outlet, so that induced wind containing dust bypasses an S shape, large-particle dust is settled due to inertia impact on the rubber strips, the wind speed can be effectively reduced, the induced wind is prevented from carrying out dust ejection, and the unpowered dust suppression unit can further remove the large-particle dust by utilizing an inertia dust suppression principle.

Further, an anti-overflow apron plate is mounted at the bottom of the guide chute body and is connected with the feeding conveying belt in a sealing manner; and a sealing device is arranged at one end of the guide chute body, which deviates from the moving direction of the feeding conveyer belt, and the sealing device adopts a sealing plate or a sealing box and is hermetically connected with the feeding conveyer belt. The bottom surface of pay-off conveyer belt is provided with the layer board, and the layer board relies on the support frame to install subaerial. The supporting plate and the anti-overflow apron plate are respectively matched with each other on two sides of the feeding conveying belt so as to achieve the effect of sealing between the guide chute body and the feeding conveying belt, and meanwhile, the feeding conveying belt can still slide relative to the guide chute body. The anti-overflow skirtboard has been set up and has been solved the pay-off conveyer belt and has received the material point department and spray powder, spill the material problem, prevents that the material from spilling over, causes the material extravagant.

Further, be provided with the pressure release hole on the baffle box body, install pressure release filter equipment on the pressure release hole, pressure release filter equipment includes relief valve and the filter that the integral type is connected, the relief valve is installed on the pressure release hole, be used for balancing the inside atmospheric pressure of baffle box body. When a material enters the feeding device, air from a feeding inlet and a gap is sucked in a rolling mode to generate strong induced air, the material collides with the inner wall of equipment for multiple times in the unloading process to generate dust, the induced air carried when the material falls on the lower half part of the soft loading and unloading blanking device becomes positive pressure, and certain positive pressure is formed in the inertial dust falling guide device when a large amount of induced air enters the inertial dust falling guide device. The material impacts the inertial dust fall guide device and the feeding conveyer belt, so that the sealing between the feeding conveyer belt and the inertial dust fall guide device is not tight, and the phenomena of powder spraying and dust escape are generated under the action of positive pressure induced wind. Therefore, the induced air of dust content and impact extrusion that the blanking pipe produced in the coal charge whereabouts in-process falls are the main root cause that the transfer station dust produced, and pressure release filter equipment releases the atmospheric pressure in the inertial dust fall guide device, on the basis of eliminating the malleation in the inertial dust fall guide device to reduce dusting and the ease dirt phenomenon that induced wind caused. The filter filters the gas sprayed out during pressure relief, and prevents the dust from being sprayed out.

Furthermore, the micro-fog dust suppression device is arranged on the upper portion of the guide chute body and located between the soft loading and unloading blanking device and the inertial dust falling unit, and comprises a micro-fog nozzle which is arranged on the upper portion of the guide chute body. The micro-fog spray head sprays micron-sized water fog particles according to the principle that water fog particles with similar particle sizes and dust particles are easy to combine into larger particles to settle, dust suspended in air, particularly respirable dust particles with the diameter of about 10 microns, is effectively adsorbed and condensed into large particles to settle by gravity, and the micro-fog spray head is particularly suitable for inhibiting open and semi-open unorganized dust emission. The high-speed straight air flow in the material guide groove body changes the direction after meeting the air blocking curtain and enters the upper spraying range to form a rotary vortex. The micro-fog spray head sprays a large amount of dense and dense micro-fog which continuously collides and adsorbs dust in the vortex, becomes heavy and then rapidly settles. The micro-fog dust suppression device is combined with the wind resistance curtain to achieve a better dust suppression effect.

Further, the double-cyclone water film dust collector comprises an air inlet cover, wherein the air inlet cover penetrates through the guide chute body and is arranged above the unpowered dust suppression subunit. The double-cyclone dust removal combines fine dust and a cyclone water film by utilizing centrifugal force generated by high-speed cyclone, and is particularly suitable for low-concentration respiratory dust. Under the conditions of strict requirements on the water content of materials or large induced air quantity due to large drop height of a transfer station, the double-cyclone water film dust removal is adopted to replace or supplement the micro-mist dust suppression. The dry and wet dust removal of the two-stage cyclone water film dust remover is combined, the dust removal efficiency is over 99.6 percent and is far higher than that of a common cyclone dust remover; the water consumption is very low, the operation is convenient, the full-automatic control is realized, and the maintenance is almost avoided.

Further, the feeding device comprises a feeding funnel, an arc-shaped flow guide cover is arranged on the feeding funnel, the arc-shaped flow guide cover is relatively and rotatably connected with the feeding funnel, and the arc shape of the arc-shaped flow guide cover is arranged towards the feeding direction; the feeding hopper is characterized in that a soft feeding pipe is further arranged below the feeding hopper, and the lower portion of the soft feeding pipe is connected with the feeding hole of the screening machine in a sealing mode. The arc-shaped guide cover enables the materials to be flexibly loaded at a small impact angle and guides the materials to fall to a proper area. The cross section of the flow guide cover is U-shaped and gradually closes up from top to bottom, and the collected materials are reduced and dispersed.

Further, the discharge gate of soft loading and unloading blanking pipe is provided with spoon form and connects the material spoon, spoon form connects the material spoon to be convergent tubular structure, spoon form connects the bottom surface of material spoon to be the arc curved surface, and its inclination passes through in succession, spoon form connect material spoon one end with soft loading and unloading blanking pipe sealing connection, its other end with inertia dust fall guide device sealing connection. The materials flowing down along the S-shaped streamline soft loading and unloading blanking pipe enter the spoon-shaped material receiving spoon in a nearly tangent mode, and the material flow impact is flexibly unloaded. The inclination angle of the lower part of the receiving spoon is accurately designed, so that materials at an outlet are loaded onto the feeding conveying belt at a speed close to the belt speed, the impact on the feeding conveying belt is reduced, and the soft loading of the materials onto the feeding conveying belt is realized. The both sides binding off design of spoon form material receiving spoon is in order to collect the material, avoids the material to strike the sealed between baffle box body both sides and the pay-off conveyer belt, avoids the flash.

The utility model has the advantages that: the material gets into from feed arrangement the utility model discloses a transfer station transports the material to the pay-off conveyer belt after soft loading and unloading doffer on, carries next station with the material by the pay-off conveyer belt. The soft loading and unloading blanking device is in a streamline design, and in the process that materials fall from top to bottom, after the materials collide with the interior of the streamline soft loading and unloading blanking device for multiple times, a part of kinetic energy is unloaded, the descending speed of the materials is reduced, and the impact of the materials on a device below the materials is reduced; the soft loading and unloading blanking pipe is in streamline arrangement, so that the fall is reduced, the impact force is reduced, and the dust is reduced and the abrasion to the pipeline is reduced. After the materials reach the feeding conveyor belt, the inertial dust fall guide device controls induced air generated in the falling process of the materials to achieve the effect of first dust fall; according to the principle that water mist particles with similar particle sizes and dust particles are easy to combine into larger particles to settle, the micro-mist dust suppression device sprays water mist with very small particle sizes to effectively adsorb and condense dust suspended in the air into large particles to settle by gravity, so that an effective secondary dust fall effect is achieved; after the micro-fog dust removal, part of low-concentration respiratory dust remains in the air, is extracted by the double-cyclone water film dust remover and then is subjected to third dust removal, and finally the air meeting the environment-friendly emission requirement is discharged. The utility model discloses a transfer station has following advantage: the dust removal system has the advantages that the dust discharge of the transfer station is reduced, the impact damage of materials to equipment is reduced, the generated quantity of dust is controlled by controlling induced wind in the transfer system, the dust removal effect is good, the operation cost is low, the maintenance workload is small, no secondary pollution is caused, and the requirement of environmental protection on dust discharge can be met.

Drawings

FIG. 1 and FIG. 2 are schematic views of the overall structure of the present invention;

FIG. 3 is an enlarged view of a portion A of FIG. 1 according to the present invention;

FIG. 4 is an enlarged view of a portion B of FIG. 2 according to the present invention;

FIG. 5 is a schematic view of the inertial dust fall guiding device of the present invention;

FIG. 6 is a schematic view of the dual-cyclone water film dust collector of the present invention;

fig. 7 is a schematic view of the comb-shaped diversion funnel of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a feeding device, 101, a feeding funnel, 102, an arc-shaped guide hood, 103, a soft feeding pipe, 104, a feeding conveyor belt, 2, a screening device, 201, a screening machine, 202, a comb-shaped guide funnel, 2021, a comb-shaped guide baffle, 203, a soft loading and unloading blanking pipe, 204, a first spoon-shaped receiving spoon, 205, an oversize blanking pipe, 3, a crusher, 301, a crusher funnel, 302, a second spoon-shaped receiving spoon, 4, an inertial dust fall guide device, 401, a guide chute body, 402, an anti-overflow skirt board, 403, a supporting plate, 404, an air blocking curtain, 405, a wind shielding strip, 406, a seal box, 5, a micro-fog dust suppression device, 501, a micro-fog spray head, 6, a double-rotation water film dust remover, 601, an air inlet hood, 602, an outer cylinder, 603, an inner cylinder, 604, a sewage barrel, 605, an axial flow blade, 606, an upper cylinder, 607, a water retaining device, 608, an air pipe, 609, a fan, 610, a control box, 7 and a, 8. a feeding conveyer belt.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

In the bulk cargo conveying system of trades such as thermal power, harbour, metallurgy, mining, all can utilize the utility model discloses an ultra-clean transfer station device, it aims at the problem of key solution chute blockage, dust, wearing and tearing and conveyer belt off tracking, assists with handling flash, spills the material, cleans the scheduling problem, carries out hierarchical improvement as a whole with the transfer station, makes clean defeated coal system transfer station.

The ultra-clean transfer station of this embodiment, as shown in fig. 1, set up on pay-off conveyer belt 8, include feed arrangement 1, soft loading and unloading doffer, inertia dust fall guide device 4 that from the top set up in proper order intercommunication, feed arrangement 1 corresponds with feeding conveyer belt 101 and is connected, soft loading and unloading doffer is streamlined setting, soft loading and unloading doffer includes airtight connection' S pectination diversion funnel 202 and soft loading and unloading blanking pipe 203, as shown in fig. 7, be equipped with in the pectination diversion funnel 202 along the pectination water conservancy diversion baffle 2021 of material flow direction layering setting, soft loading and unloading blanking pipe 203 is the streamlined setting of S-shaped, can set up in a flexible way to taking the streamlined pipeline of a plurality of flex points according to pipeline length. The soft loading and unloading blanking pipe 203 is hermetically connected with the inertial dust fall material guiding device 4; the inertial dust fall guide device 4 is arranged along the direction of the feeding conveyer belt 8, a micro-fog dust suppression device 5 is arranged in the inertial dust fall guide device 4, the micro-fog dust suppression device 5 comprises a micro-fog nozzle 501, and the micro-fog nozzle 501 is arranged at the upper part of the inertial dust fall guide device 4; the transfer station is further provided with a double-cyclone water film dust collector 6, and an air inlet cover 601 of the double-cyclone water film dust collector 6 is hermetically connected with the inertial dust fall guiding device 4.

According to the material flow path of discrete element simulation analysis (DEM), the parts in the soft loading and unloading blanking device, which are contacted with the materials, are paved with the bimetal composite wear-resistant steel plates as lining plates, or the chutes are directly welded by the bimetal composite wear-resistant steel plates. At the more blanking point of loading material, lay thicker compound wear-resisting steel sheet in order to increase blanking pipe life-span, can avoid redundant use thick wear-resisting steel sheet on a large scale. The composite wear-resistant steel plate is formed by one-step surfacing through a submerged arc welding process, has high chromium content, no crack, large thickness, no need of multilayer surfacing, flat and smooth surface, higher hardness (HRC58-65), no falling and smaller friction coefficient.

The material gets into from feed arrangement 1 the utility model discloses a transfer station transports the material to the pay-off conveyer belt 8 after soft loading and unloading doffer on, carries the next station with the material by pay-off conveyer belt 8. The soft loading and unloading blanking device is in a streamline design, and in the process that materials fall from top to bottom, after the materials collide with the interior of the streamline soft loading and unloading blanking device for multiple times, a part of kinetic energy is unloaded, the descending speed of the materials is reduced, and the impact of the materials on a device below the materials is reduced; the comb-shaped diversion funnel 202 on the soft loading and unloading blanking device and the comb-shaped diversion baffle 2021 arranged in a streamline mode guide materials to the side wall of the funnel, and meanwhile, the soft loading and unloading blanking pipe 203 is arranged in an S-shaped streamline mode to reduce the fall, reduce the impact force and reduce the dust generation and the abrasion to the pipeline. After the materials reach the feeding conveyer belt 8, the inertial dust fall guide device 4 controls induced wind generated in the falling process of the materials to achieve the dust fall effect; according to the principle that water mist particles with similar particle sizes and dust particles are easy to combine into larger particles to settle, the micro-mist dust suppression device 5 sprays water mist with very small particle sizes to effectively adsorb and condense dust suspended in the air into large particles to settle by gravity, so that an effective dust fall effect is achieved; after the fine mist dust removal, a part of low-concentration respiratory dust is left in the air, is extracted by the double-cyclone water film dust collector 6 for further dust removal, and finally is discharged to meet the environment-friendly emission requirement.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Further, soft loading and unloading doffer still is including being screening plant 2 and the breaker 3 that sets up from top to bottom, and screening plant 2 adopts screening machine 201. The feed inlet of screening machine 201 with 1 sealing connection of feed arrangement, be equipped with sieve top discharge mouth and sieve bottom discharge mouth on the screening machine 201, the sieve bottom discharge mouth of screening machine 201 with the feed inlet sealing connection of pectination water conservancy diversion funnel 202, the sieve top discharge mouth of screening machine 201 passes through sieve blanking pipe 205 and connects the feed inlet of breaker 3, the discharge gate of breaker 3 with 4 sealing connection of inertial dust fall guide device. The inclination angle of the oversize down pipe 205 to the vertical can be increased to reduce the impact angle of the material, reduce the impact and dust and increase the life of the oversize down pipe 205 and the flippers in the crusher 3. Screening machine 201 is prior art, and this embodiment both can adopt rotary screening machine 201, also can adopt vibrating screening machine 201. The sieving machine 201 is provided with a screen mesh, materials flow onto the screen mesh, materials with small particles flow out from a discharge port under the screen mesh through the screen mesh, and then the materials are buffered and guided by a comb-shaped guide funnel 202 and then discharged onto a feeding conveyer belt 8 below through a streamline pipeline; the big material of granule can't pass through the sieve mesh on the screen cloth, because the screen cloth is the slope setting, the big material of granule rolls to the discharge gate on the sieve, gets into breaker 3 through on-sieve blanking pipe 205, carries out further smashing on the pay-off conveyer belt 8 of unloading below. The cross sections of the soft loading material pipe 103, the soft loading and unloading blanking pipe 203 and the screen blanking pipe 205 are polygonal or U-shaped, and the U-shaped cross sections can collect materials, so that the dispersion and pulverization of the materials in the transportation process of the pipelines are reduced.

Further, a crusher funnel 301 is arranged at a discharge port of the crusher 3, comb-shaped flow guide partition plates 2021 which are arranged in layers along the material flow direction are arranged in the crusher funnel 301, the comb-shaped flow guide partition plates 2021 are arranged to be streamline, and the comb-shaped flow guide partition plates 2021 guide the material to the inner wall of the crusher funnel 301. For the funnel with larger height and transverse dimension, the fall of the materials in the funnel is larger, the falling speed of the materials is high, the impact on the side walls of the funnel and the blanking pipe is larger, and the comb-shaped diversion partition plate 2021 arranged in a streamline shape guides the materials to the side wall of the funnel so as to reduce the fall, reduce the impact force and reduce the dust generation and the abrasion on the equipment below. Breaker funnel 301 below and inertia dust fall guide device 4 junction can set up to the material spoon that connects of spoon form to cushion the material, reduce the impact of material to pay-off conveyer belt 8. As shown in fig. 1, the material receiving spoon is referred to as a second spoon-shaped material receiving spoon 302.

As shown in fig. 5, the inertial dust fall guiding device 4 includes a guiding chute body 401 and an inertial dust fall unit disposed in the guiding chute body 401, wherein the guiding chute body 401 is disposed above the feeding conveyor belt 8 and is slidably connected to the feeding conveyor belt 8; the inertial dust settling unit comprises a wind resistance curtain 404 and an unpowered dust suppression subunit, and the soft loading and unloading blanking device, the wind resistance curtain 404 and the unpowered dust suppression subunit are sequentially arranged along the moving direction of the feeding conveyer belt 8; the wind resistance curtain 404 and the unpowered dust suppression subunit are arranged at the top of the material guide chute body 401 and naturally droop; the unpowered dust suppression subunit is a plurality of flexible wind shielding strips 405, and the wind shielding strips 405 are arranged in the guide chute body 401 in a labyrinth manner. When the materials are discharged into the material guide groove body 401, the wind resistance curtain 404 reduces the speed and buffers induced wind, and the airflow is diverted to enable large particle dust to be subjected to inertial collision and settle; the wind-shielding strips 405 are multi-edge rubber strips, a plurality of wind-shielding strips 405 arranged in a maze are suspended at a material outlet, dust-containing induced wind bypasses an S shape, large-particle dust is settled due to inertia impact on the rubber strips, the wind speed can be effectively reduced, the induced wind is prevented from carrying out dust ejection, and the unpowered dust suppression unit utilizes the inertia dust suppression principle to further remove the large-particle dust.

As shown in fig. 3 to 4, an overflow-preventing apron plate 402 is installed at the bottom of the guide chute body 401, and the overflow-preventing apron plate 402 is hermetically connected with the feeding conveyor belt 8; and a sealing device is arranged at one end of the guide chute body 401, which deviates from the movement direction of the feeding conveyer belt 8, and the sealing device adopts a sealing plate or a sealing box 406 and is hermetically connected with the feeding conveyer belt 8. The bottom surface of the feeding conveyer belt 8 is provided with a supporting plate 403, and the supporting plate 403 is arranged on the ground by means of a supporting frame. The supporting plate 403 and the anti-overflow skirt plate 402 are respectively matched on two sides of the feeding conveyer belt 8 to achieve the effect of sealing between the material guiding groove body 401 and the feeding conveyer belt 8, and meanwhile, the feeding conveyer belt 8 can still slide relative to the material guiding groove body 401. The setting of anti-overflow skirtboard 402 has solved the pay-off conveyer belt 8 and has received the material some department and has dusted powder, spill the material problem, prevents that the material from spilling over, causes the material extravagant.

The baffle box body 401 comprises an expansion side plate and a cover plate which are connected integrally, and a wear-resistant lining plate is arranged on the inner wall of the expansion side plate for reducing the impact force on the side wall of the baffle box body 401 when the material is unloaded.

Further, as shown in fig. 1, a pressure relief hole is formed in the material guide chute body 401, a pressure relief filtering device 7 is installed on the pressure relief hole, the pressure relief filtering device 7 comprises a pressure relief valve and a filter which are connected in an integrated manner, and the pressure relief valve is installed on the pressure relief hole and used for balancing the air pressure inside the material guide chute body 401. When a material enters the feeding device 1, air from a feeding inlet and a gap is sucked in a rolling mode to generate strong induced air, the material collides with the inner wall of equipment for multiple times in the unloading process to generate dust raising, the induced air carried when the material falls on the lower half part of the soft loading and unloading blanking device becomes positive pressure, and a certain positive pressure is formed in the inertial dust fall guide device 4 when a large amount of induced air enters the inertial dust fall guide device 4. The material impacts the inertial dust fall guide device 4 and the feeding conveyer belt 8, so that the sealing between the feeding conveyer belt 8 and the inertial dust fall guide device 4 is not tight, and the phenomena of powder spraying and dust escape are generated under the action of positive pressure induced wind. Therefore, the dust-containing induced wind and impact extrusion generated by the blanking pipe in the coal falling process are main sources of dust generation of the transfer station, the pressure relief filtering device 7 is used for relieving the air pressure in the inertial dust fall guide device 4, and the positive pressure in the inertial dust fall guide device 4 is eliminated, so that the phenomena of powder spraying and dust escape caused by the induced wind are reduced. The filter filters the gas sprayed out during pressure relief, and prevents the dust from being sprayed out.

As shown in fig. 5, the fine fog dust suppression device 5 is disposed on the upper portion of the material guiding chute body 401 and located between the soft loading and unloading blanking device and the inertial dust settling unit, the fine fog dust suppression device 5 includes a fine fog nozzle 501, and the fine fog nozzle 501 is disposed on the upper portion of the material guiding chute body 401. According to the principle that water mist particles with similar particle sizes are easy to combine with dust particles to form larger particles to settle, which is sprayed by the micro-mist spray head 501, the micro-mist spray head 501 sprays micron-sized water mist particles (mainly water mist with particle sizes of 15-50um and some larger particle sizes) to effectively adsorb and agglomerate dust suspended in the air, particularly respirable dust particles with diameters of about 10um into large particles to settle by gravity, so that the micro-mist spray head is particularly suitable for inhibiting the unorganized dust emission with openness and semi-openness. The high-speed straight air flow in the material guide groove body 401 changes direction after meeting the air blocking curtain 404 and enters the upper spraying range to form a rotary vortex. The micro-mist spray head 501 sprays a large amount of dense and dense micro-mist which continuously collides and adsorbs dust in the vortex, becomes heavy and then rapidly settles. The micro-fog dust suppression device 5 is combined with the wind resistance curtain 404 to achieve a better dust suppression effect.

Further, as shown in fig. 6, the double-cyclone water film dust collector 6 includes an air inlet cover 601, and the air inlet cover 601 penetrates through the material guide chute body 401 and is disposed above the unpowered dust suppression subunit. The double-cyclone water film dust collector 6 is a dust collector which is widely used in the prior art, and the structure of the double-cyclone water film dust collector is not described in detail in the patent. As shown in fig. 6, the double cyclone dust removal utilizes the centrifugal force generated by the high-speed cyclone to combine the fine dust with the cyclone water film, and is particularly suitable for low-concentration respiratory dust. Under the conditions of strict requirements on the water content of materials or large induced air quantity due to large drop height of a transfer station, the double-cyclone water film dust removal is adopted to replace or supplement the micro-mist dust suppression. The dry and wet dust removal of the two-stage cyclone water film dust remover is combined, the dust removal efficiency is over 99.6 percent and is far higher than that of a common cyclone dust remover; the water consumption is very low, the operation is convenient, the full-automatic control is realized, and the maintenance is almost avoided.

The dust removal principle of the double-cyclone water film dust remover 6 is as follows: after inertial dust fall through the wind resisting curtain 404 and the wind resisting strip 405, dust gas containing a large amount of small particle dust (particularly respiratory dust) is sucked by the air inlet cover 601 of the double-cyclone water film dust collector 6, enters the dust collector along the tangential direction, carries out primary cyclone between the outer barrel 602 and the wall of the inner barrel 603, and larger dust particles are thrown to the barrel wall under the action of centrifugal force, flow down along the barrel wall after being adsorbed on the water film of the barrel wall, are discharged to the sewage barrel 604 and are discharged out of the dust collector. Then, the primarily purified dust-containing air flow enters the inner cylinder 603 in the tangential direction to carry out secondary rotational flow, and because the diameter of the inner cylinder 603 is smaller and the air flow velocity is higher, smaller dust particles are thrown to a water film on the wall of the inner cylinder 603 and are discharged along with water flow. The airflow of the inner barrel 603 rises through the rotational flow water layer of the axial flow blade 605 to remove finer particles, the dedusted gas passes through the water retaining device 607 to remove moisture, passes through the air pipe 608 and is exhausted into the atmosphere by the fan 609, and the deduster is provided with an independent control box 610 to control the fan 609.

Further, as shown in fig. 1, the feeding device 1 includes a feeding funnel 101, an arc-shaped air guide sleeve 102 is disposed on the feeding funnel 101, the arc-shaped air guide sleeve 102 is relatively rotatably connected to the feeding funnel 101, and an arc shape of the arc-shaped air guide sleeve 102 is disposed toward a feeding direction (i.e., a direction in which a feeding conveyor 104 advances); a soft feeding pipe 103 is further arranged below the feeding hopper 101, and the lower portion of the soft feeding pipe 103 is hermetically connected with a feeding hole of the sieving machine 201. The curved pod 102 provides a flexible loading of material at a small impact angle and directs the material to fall into a desired area. The cross section of the flow guide cover is U-shaped and gradually closes up from top to bottom, and the collected materials are reduced and dispersed.

Further, the discharge gate of soft loading and unloading blanking pipe 203 is provided with first spoon form and connects material spoon 204, first spoon form connects material spoon 204 to be convergent tubular structure, the bottom surface that first spoon form connects material spoon 204 is the arc curved surface, and its inclination passes through in succession, first spoon form connect material spoon 204 one end with soft loading and unloading blanking pipe 203 sealing connection, its other end with inertia dust fall guide device 4 sealing connection. The materials flowing down along the S-shaped streamline soft loading and unloading blanking pipe 203 enter the spoon-shaped material receiving spoon in a nearly tangent mode, and the materials are flexibly unloaded and impacted. The inclination angle of the lower part of the material receiving spoon is accurately designed, so that materials at an outlet are loaded onto the feeding conveyer belt 8 at a speed close to the belt speed, the impact on the feeding conveyer belt 8 is reduced, and the soft loading of the materials onto the feeding conveyer belt 8 is realized. The design of closing up in order to collect the material of both sides of spoon form material receiving spoon avoids the material to strike the sealed between baffle box body 401 both sides and the pay-off conveyer belt 8, avoids the flash.

As shown in FIG. 2, the transfer station of the present invention can be used alone or in combination to improve the efficiency of material transfer.

The material gets into from feed arrangement 1 the utility model discloses a transfer station transports the material to the pay-off conveyer belt 8 after soft loading and unloading doffer on, carries the next station with the material by pay-off conveyer belt 8. The soft loading and unloading blanking device is in a streamline design, and in the process that materials fall from top to bottom, after the materials collide with the interior of the streamline soft loading and unloading blanking device for multiple times, a part of kinetic energy is unloaded, the descending speed of the materials is reduced, and the impact of the materials on a device below the materials is reduced; the soft loading and unloading blanking device is provided with a comb-shaped diversion funnel 202, a comb-shaped diversion baffle 2021 arranged in a streamline manner guides materials to the side wall of the funnel, and a soft loading and unloading blanking pipe 203 is arranged in a streamline manner so as to reduce the fall, reduce the impact force and reduce the dust generation and the abrasion to the pipeline. After the materials reach the feeding conveyer belt 8, the inertial dust fall guiding device 4 controls induced wind generated in the falling process of the materials to achieve the effect of first dust fall; according to the principle that water mist particles with similar particle sizes and dust particles are easy to combine into larger particles to settle, the micro-mist dust suppression device 5 sprays water mist with very small particle sizes to effectively adsorb and condense dust suspended in the air into large particles to settle by gravity, so that an effective secondary dust fall effect is achieved; after the fine mist dust removal, part of low-concentration respiratory dust remains in the air, is extracted by the double-cyclone water film dust collector 6 and then is subjected to third dust removal, and finally the air meeting the environment-friendly emission requirement is discharged. The utility model discloses a transfer station has following advantage: the dust removal system has the advantages that the dust discharge of the transfer station is reduced, the impact damage of materials to equipment is reduced, the generated quantity of dust is controlled by controlling induced wind in the transfer system, the dust removal effect is good, the operation cost is low, the maintenance workload is small, no secondary pollution is caused, and the requirement of environmental protection on dust discharge can be met.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (10)

1. An ultra-clean transfer station is arranged on a feeding conveyer belt (8), and is characterized by comprising a feeding device (1), a soft loading and unloading blanking device and an inertial dust fall guiding device (4) which are sequentially communicated from top to bottom, wherein the soft loading and unloading blanking device is in streamline arrangement and comprises a comb-shaped guide funnel (202) and a soft loading and unloading blanking pipe (203) which are hermetically connected, a comb-shaped guide partition plate (2021) which is arranged in a layered manner along the material flow direction is arranged in the comb-shaped guide funnel (202), the soft loading and unloading blanking pipe (203) is in streamline arrangement, and the soft loading and unloading blanking pipe (203) is hermetically connected with the inertial dust fall guiding device (4); the inertial dust fall guide device (4) is arranged along the direction of the feeding conveyer belt (8), a micro-fog dust suppression device (5) is arranged in the inertial dust fall guide device (4), the micro-fog dust suppression device (5) comprises a micro-fog nozzle (501), and the micro-fog nozzle (501) is arranged at the upper part of the inertial dust fall guide device (4); the transfer station is further provided with a double-cyclone water film dust collector (6), and an air inlet cover (601) of the double-cyclone water film dust collector (6) is connected with the inertial dust-fall guide device (4) in a sealing mode.

2. The ultra-clean transfer station of claim 1, wherein the soft loading and unloading blanking device further comprises a screening machine (201) and a crusher (3) which are arranged up and down, the feed inlet of the screening machine (201) is connected with the feeding device (1) in a sealing manner, the screening machine (201) is provided with an upper discharge port and a lower discharge port, the lower discharge port of the screening machine (201) is connected with the feed inlet of the comb-shaped diversion funnel (202) in a sealing manner, the upper discharge port of the screening machine (201) is connected with the feed inlet of the crusher (3) through a pipeline, and the discharge port of the crusher (3) is connected with the inertial dust-fall guiding device (4) in a sealing manner.

3. The ultra-clean transfer station of claim 2, characterized in that the discharge port of the crusher (3) is provided with a crusher hopper (301), comb-shaped baffle plates (2021) are arranged in layers along the material flow direction in the crusher hopper (301), the comb-shaped baffle plates (2021) are arranged in a streamline shape, and the comb-shaped baffle plates (2021) guide the material to the inner wall of the crusher hopper (301).

4. The ultra-clean transfer station of claim 1, wherein the inertial dust fall guiding device (4) comprises a guiding chute body (401) and an inertial dust fall unit arranged in the guiding chute body (401), the guiding chute body (401) is arranged above the feeding conveyor belt (8) and is connected with the feeding conveyor belt (8) in a sliding manner; the inertial dust settling unit comprises a wind resistance curtain (404) and an unpowered dust suppression subunit, and the soft loading and unloading blanking device, the wind resistance curtain (404) and the unpowered dust suppression subunit are sequentially arranged along the moving direction of the feeding conveyer belt (8); the wind resistance curtain (404) and the unpowered dust suppression subunit are arranged at the top of the guide chute body (401) and naturally droop; the unpowered dust suppression subunit comprises a plurality of flexible wind shielding strips (405), and the wind shielding strips (405) are arranged in a labyrinth manner in the guide chute body (401).

5. The ultra-clean transfer station of claim 4, characterized in that an overflow-preventing apron plate (402) is installed at the bottom of the guide chute body (401), and the overflow-preventing apron plate (402) is hermetically connected with the feeding conveyer belt (8); and a sealing device is arranged at one end of the guide chute body (401) deviating from the movement direction of the feeding conveyer belt (8), and the sealing device is hermetically connected with the feeding conveyer belt (8).

6. The ultra-clean transfer station as claimed in claim 4 or 5, wherein the material guide chute body (401) is provided with a pressure relief hole, the pressure relief hole is provided with a pressure relief filtering device (7), the pressure relief filtering device (7) comprises a pressure relief valve and a filter which are integrally connected, and the pressure relief valve is arranged on the pressure relief hole and used for balancing the air pressure inside the material guide chute body (401).

7. The ultra-clean transfer station of claim 4, wherein the micro-fog dust suppression device (5) is arranged on the upper portion of the material guide chute body (401) and between the soft loading and unloading blanking device and the inertial dust settling unit, the micro-fog dust suppression device (5) comprises a micro-fog nozzle (501), and the micro-fog nozzle (501) is arranged on the upper portion of the material guide chute body (401).

8. The ultra-clean transfer station of claim 4, wherein the double cyclone dust collector (6) comprises an air inlet hood (601), and the air inlet hood (601) penetrates through the material guide chute body (401) and is arranged above the unpowered dust suppression subunit.

9. The ultra-clean transfer station of claim 2, characterized in that the feeding device (1) comprises a feeding funnel (101), an arc-shaped air guide sleeve (102) is arranged on the feeding funnel (101), the arc-shaped air guide sleeve (102) is relatively rotatably connected with the feeding funnel (101), and the arc of the arc-shaped air guide sleeve (102) is arranged towards the feeding direction; a soft feeding pipe (103) is further arranged below the feeding hopper (101), and the lower portion of the soft feeding pipe (103) is hermetically connected with a feeding hole of the sieving machine (201).

10. The ultra-clean transfer station as claimed in claim 1, wherein the discharge port of the soft loading and unloading blanking pipe (203) is provided with a spoon-shaped receiving spoon, the spoon-shaped receiving spoon is of a tapered tubular structure, one end of the spoon-shaped receiving spoon is hermetically connected with the soft loading and unloading blanking pipe (203), and the other end of the spoon-shaped receiving spoon is hermetically connected with the inertial dust fall guiding device (4).

Images