CN214665624U - Multistage network chain closed coal slime drying machine - Google Patents

Abstract

The utility model discloses a multistage net chain closed coal slime desiccator, it is including two dry chambers that arrange from top to bottom, be equipped with feed inlet and discharge gate on the dry chamber, be equipped with net chain conveyer and lower net chain conveyer in the dry chamber, net chain conveyer and lower net chain conveyer separate dry chamber for from the top down last air chamber, cavity air chamber and air chamber down, the air outlet has been seted up to last air chamber, first air intake has been seted up to the cavity air chamber, be equipped with first fan on the first air intake, the second air intake has been seted up to the air chamber down, be equipped with the second fan on the second air intake, the discharge gate that is located the dry chamber of top and the feed inlet mutual disposition of the dry chamber that is located the below. Its purpose is in order to provide a multistage net chain closed coal slime desiccator, and its area is little, the energy consumption is low, the running cost is low, can realize accurate drying to no flue gas, dust discharge.

Description

Multistage network chain closed coal slime drying machine

Technical Field

The utility model relates to a coal slime drying field especially relates to a multistage net chain closed coal slime desiccator.

Background

China is a country rich in coal and less in oil, and coal is in a more-than-demand format for a long time. According to the investigation of coal mine washing plants all over the country, some coal slime produced in the coal production process is discharged and stacked in situ, because the coal slime is extremely unstable in shape and does not form by self-flow, the coal slime runs off when meeting water and flies after being dried in the air, the coal slime is abandoned as waste, the environmental protection problem is more serious than that of coal gangue washing, and extremely serious environmental pollution is produced. The other treatment mode is drying by using a dryer, the traditional coal slime drying process mainly comprises a high-temperature drying process of a hot blast stove and a steam heating low-temperature drying process, smoke emission and dust emission exist, the environment is protected, the standard is not easy to reach, the operation cost is high, and the steam low-temperature drying process is limited by a steam heat source.

The coal slime is as the by-product that produces among the washing process, and its transportation, storage, stack have a great deal of environmental protection problems such as environmental pollution occupation of land, and direct marketing economic value is extremely low, and the novel coal slime drying technology of clean, efficient is urgently needed at present, carries out drying process to the coal slime product to improve the economic, the environmental protection benefit of enterprise.

At present, the coal slime drying process adopted by coal mine coal preparation plants can be mainly divided into two main types.

(1) The high-temperature flue gas drying process comprises the following steps: and drying the coal slime filter cake by adopting a hot-blast stove and a roller dryer (or a fluidized bed). The water content of the filter cake of the filter press coal slime is reduced to 13-15% after the filter cake is dried, and the filter cake of the filter press coal slime is in a globular shape and sold separately or mixed with clean coal for external sale. The technology is mature, the yield is high, and a coal-fired hot air furnace and a gas-fired hot air furnace are selected for the hot air furnaces, the heat supply capacity of the coal-fired hot air furnace is below 20 steam tons, and the technology belongs to obsolete equipment; the gas storage source supply safety of the gas hot blast stove and the defects of overproof nitrogen oxide emission, high energy consumption, high operation cost and the like.

(2) And (3) a low-temperature steam drying process: the process utilizes the latent heat of vaporization of steam to heat and dry coal slurry. The steam is indirectly contacted with the coal slime through a steam rotary dryer (or a fluidized bed) to evaporate the moisture in the coal slime. The coal slime low-temperature steam rotary drying technology is a novel environment-friendly drying technology, but the coal slime low-temperature steam rotary drying technology takes steam as a drying heat source, is limited in heat source, has the problems of pollutant emission, dust removal, white elimination and the like, and has the defects of large equipment floor area, small capacity, high energy consumption, high operation cost and the like.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a multistage net chain closed coal slime desiccator, its area is little, the energy consumption is low, the running cost is low, can realize accurate drying to no flue gas, dust emission.

The utility model discloses multistage net chain closed coal slime desiccator, including two dry chambers who arranges from top to bottom, the top of dry chamber is equipped with the feed inlet, the below of dry chamber is equipped with the discharge gate, from the top down is equipped with net chain conveyor and net chain conveyor down in proper order in the dry chamber, net chain conveyor and net chain conveyor down separate the dry chamber for from the top down last air chamber, cavity air chamber and air chamber down, the air outlet has been seted up to last air chamber, first air intake has been seted up to the cavity air chamber, be equipped with first fan on the first air intake, the second air intake has been seted up to the air chamber down, be equipped with the second fan on the second air intake, the discharge gate that is located the dry chamber of top and the feed inlet relative arrangement of the dry chamber that is located the below.

The utility model discloses multistage net chain closed coal slime desiccator, wherein go up the net chain conveyer and include drive sprocket, go up driven sprocket and go up the net chain conveyer belt, it all rotates to install in dry chamber with last driven sprocket to go up drive sprocket, go up net chain conveyer belt suit on last drive sprocket and last driven sprocket, go up and seted up a plurality of blow vents of going up along length direction on the net chain conveyer belt, it passes through last motor drive to go up drive sprocket, lower net chain conveyer includes down drive sprocket, lower driven sprocket and net chain conveyer belt down, drive sprocket and lower driven sprocket all rotate to install in dry chamber down, net chain conveyer belt suit is on drive sprocket and lower driven sprocket down, a plurality of lower blow vents have been seted up along length direction on the net chain conveyer belt down, lower drive sprocket is through motor drive down.

The utility model discloses multistage net chain closed coal slime desiccator, wherein the top of going up net chain conveyer belt and lower net chain conveyer belt is equipped with material turning device respectively, material turning device locates the axis of rotation on the dry cavity including rotating, be equipped with a plurality of radially arranged's returning face plates in the axis of rotation, the axis of rotation is through upset motor drive.

The utility model discloses multistage net chain closed coal slime desiccator, wherein be equipped with the deep bead all around of going up the net chain conveyer, it connects between last net chain conveyer and dry cavity to go up the deep bead, the deep bead is equipped with down all around of net chain conveyer down, the deep bead is connected between net chain conveyer and dry cavity down, be equipped with on the dry cavity of net chain conveyer one end the feed inlet, the last deep bead department of the net chain conveyer other end is equipped with blanking mouth, the one end of net chain conveyer is located the below of blanking mouth down, be equipped with down the blanking mouth on the deep bead of the net chain conveyer other end down, be equipped with down on the dry cavity of blanking mouth below the discharge gate.

The utility model discloses multistage net chain closed coal slime desiccator, wherein the feed inlet department of drying chamber is equipped with broken bridge shaping cloth machine, broken bridge device and extrusion distributing device have been arranged from top to bottom in the broken bridge shaping cloth machine in proper order, be located the broken bridge shaping cloth machine top of the drying chamber of top and be equipped with the feeding conveyer, the feeding conveyer includes feeding action wheel, feeding driven wheel and feeding conveyer belt, the feeding conveyer belt suit is on feeding action wheel and feeding driven wheel, the feeding action wheel passes through the drive of feeding motor, the top of feeding conveyer is equipped with the de-ironing separator, the discharge gate department of drying chamber is equipped with the feed cylinder, the upper port of feed cylinder is located the below of feed opening, the feed cylinder lower port of the drying chamber that is located the top is located the broken bridge shaping cloth machine of the drying chamber that is located the below, the spiral discharging machine is arranged below the discharging barrel of the drying chamber below, and the inlet of the spiral discharging machine is arranged below the lower port of the discharging barrel of the drying chamber below.

The utility model discloses multistage net chain closed coal slime desiccator, wherein the interior bottom of drying chamber is equipped with scrapes the automatic ash removal device of board formula, it includes scraper blade, deashing drive sprocket, deashing driven sprocket and chain to scrape the automatic ash removal device of board formula, deashing drive sprocket and deashing driven sprocket rotate respectively and locate the both ends of bottom in the drying chamber, the chain suit is on deashing drive sprocket and deashing driven sprocket, the deashing drive sprocket passes through deashing motor drive, the scraper blade connect in on the chain, be equipped with the ash hole corresponding with the scraper blade on the play feed cylinder.

The utility model discloses multistage net chain closed coal slime desiccator, wherein the scraper blade includes socket joint spare and plug connector, the socket joint spare is triangle tubbiness structure, the bucket wall of socket joint spare is interconnect's first end bucket wall and two first side bucket walls, set up two spouts that arrange along socket joint spare length direction on the first end bucket wall, the plug connector is triangle columnar structure, the external shape of plug connector and the bucket cavity shape phase-match of socket joint spare, the periphery wall of plug connector is interconnect's outer bottom wall and two lateral walls, be equipped with two sliders on the outer bottom wall of plug connector, the plug connector is inserted in the bucket cavity of socket joint spare, two the slider is located two spouts respectively, be equipped with a plurality of elastic bulge on two lateral walls of plug connector respectively, every a plurality of elastic bulge on the lateral wall all arrange along the length direction of plug connector, the inner barrel wall of the socket piece is provided with a groove matched with the elastic bulge, one end of the chain is connected to a first side barrel wall of the socket piece and an outer side wall of the plug connector, and the other end of the chain is connected to another first side barrel wall of the socket piece and another outer side wall of the plug connector.

The utility model discloses multistage net chain closed coal slime desiccator, wherein go up the net chain conveyer belt and all wash through net chain self-cleaning device with net chain conveyer belt down, net chain self-cleaning device includes high-pressure gas pump, high-pressure gas jar and the high-pressure gas nozzle that connects gradually through the high-pressure gas pipeline, the high-pressure gas nozzle includes the same first high-pressure gas nozzle of structure and second high-pressure gas nozzle, first high-pressure gas nozzle is located between the upper and lower conveyer belt of net chain conveyer belt, first high-pressure gas nozzle is arranged towards the lower conveyer belt of net chain conveyer belt, second high-pressure gas nozzle is located down between the upper and lower conveyer belt of net chain conveyer belt, second high-pressure gas nozzle is arranged towards the lower conveyer belt of net chain conveyer belt down.

The utility model discloses multistage net chain closed coal slime desiccator, wherein first high-pressure gas nozzle and second high-pressure gas nozzle all include the casing that is the tube-shape, the upper and lower nozzle of casing is air current import and air current export respectively, the casing includes upper barrel and the lower barrel of arranging from top to bottom, the internal diameter of lower barrel is greater than the internal diameter of upper barrel, sliding seal is equipped with water conservancy diversion shutoff seat in the upper barrel of casing, water conservancy diversion shutoff seat is the tubbiness, the bung hole of water conservancy diversion shutoff seat is arranged towards the upper nozzle of casing, water conservancy diversion shutoff seat includes second bottom bucket wall and second side bucket wall, seted up first air current opening on the second side bucket wall, the outside of second bottom bucket wall is connected with the guide post, be equipped with the water conservancy diversion support frame in the lower barrel, be equipped with the guiding hole corresponding with the guide post on the water conservancy diversion support frame, the guide post alternates in the guiding hole, the improved high-pressure gas pipeline guide device is characterized in that a second air flow through hole is formed in the guide support frame, the second air flow through hole penetrates through the guide support frame along the vertical direction, a spring is connected between the guide plugging seat and the guide support frame, an annular clamping table is fixedly arranged at the lower end of the inner cylinder wall of the upper cylinder body, the guide plugging seat is arranged in the annular clamping table in a sliding sealing mode, a radial flange is fixedly arranged on the outer side of a barrel opening of the guide plugging seat, a clamping block is fixedly arranged at the lower end of the guide column and located below the guide support frame, and an internal thread used for being connected with a high-pressure gas pipeline is arranged at the upper end of the inner cylinder wall of the upper cylinder body.

The utility model discloses multistage net chain closed coal slime desiccator, wherein the air outlet of air chamber is connected with the main air pipeline, be equipped with dual discharge valve on the main air pipeline, the extrinsic cycle air intake has been seted up to the lower air chamber of dry cavity, extrinsic cycle air intake department is equipped with dual admission valve, extrinsic cycle air intake department in the dry cavity is equipped with the third fan.

The utility model discloses multistage net chain closed coal slime desiccator is including two drying chamber that arrange from top to bottom, and two drying chamber series arrangements, "series arrangement" indicates the drying chamber discharge gate that is located the top and the drying chamber feed inlet relative arrangement that is located the below, and the drying chamber discharge gate that can follow the top of coal slime promptly falls into the drying chamber feed inlet of below, that is to say, the coal slime can be from the top down dried through two drying chamber in proper order. For convenience of explanation, the drying chamber located above is referred to as an upper drying chamber, the drying chamber located below is referred to as a lower drying chamber, and the upper and lower drying chambers have the same structure. The coal slurry to be dried enters the upper drying chamber from the feeding hole of the upper drying chamber and falls on the upper mesh chain conveyor, the coal slurry is conveyed to the lower mesh chain conveyor by the upper mesh chain conveyor along with the rotation of the upper mesh chain conveyor, and then is conveyed to the discharging hole below the upper drying chamber by the lower mesh chain conveyor along with the rotation of the lower mesh chain conveyor. And the coal slime is discharged from a discharge hole of the lower drying chamber after passing through the lower drying chamber. Since the upper drying chamber and the lower drying chamber have the same structure, only one drying chamber will be described as an example. In the conveying process of the coal slime in the drying chamber, the first air inlet is filled with air (with a certain temperature) for drying the coal slime on the upper net chain conveyor, the second air inlet is filled with air (with a certain temperature) for sequentially drying the coal slime on the lower net chain conveyor and the upper net chain conveyor from bottom to top, and finally, the air filled from the first air inlet and the second air inlet is discharged from the air outlet of the drying chamber. Therefore, the utility model discloses area is little, the energy consumption is low, the running cost is low, can realize accurate drying to no flue gas, dust discharge.

The present invention will be further explained with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic structural view of the multi-stage network chain closed coal slime drying machine of the present invention;

fig. 2 is a schematic structural view of a middle feeding conveyor, a bridge breaking forming distributor, an upper net chain conveyor, a lower net chain conveyor, a spiral discharging machine and a net chain automatic cleaning device of the utility model;

FIG. 3 is a schematic structural view of the middle scraper type automatic ash removal device of the present invention;

FIG. 4 is a schematic structural view of a scraper blade according to the present invention;

FIG. 5 is a schematic structural view of the plug-in member of the present invention;

fig. 6 is a schematic structural view of the socket member of the present invention;

FIG. 7 is a schematic structural view of the bottom of the scraper blade of the present invention;

FIG. 8 is a front view of a high pressure gas nozzle according to the present invention;

fig. 9 is a front sectional view of the middle/high pressure gas nozzle of the present invention (the flow guide plugging seat is in the plugging position);

fig. 10 is a front sectional view of the middle/high pressure gas nozzle of the present invention (the flow guide plugging seat is in the conducting position);

fig. 11 is a front view of the middle diversion plug seat of the present invention;

fig. 12 is a top view of the middle diversion plug seat of the present invention;

fig. 13 is a top view of the middle diversion support frame of the present invention.

Detailed Description

As shown in fig. 1, and combine fig. 2-13 to show, the utility model discloses multistage net chain closed coal slime desiccator is including two drying chamber 6 that arrange from top to bottom, drying chamber 6's top is equipped with the feed inlet, drying chamber 6's below is equipped with the discharge gate, from the top down is equipped with net chain conveyor 8 and lower net chain conveyor 17 in proper order in drying chamber 6. Go up net chain conveyor 8 and net chain conveyor 17 down and separate drying chamber 6 for from the top down last air chamber, cavity air chamber and air chamber down, the air outlet has been seted up to last air chamber, first air intake has been seted up to the cavity air chamber, be equipped with first fan 28 on the first air intake, the second air intake has been seted up to the air chamber down, be equipped with second fan 38 on the second air intake, the discharge gate that is located the drying chamber 6 of top and the feed inlet relative arrangement of the drying chamber 6 that is located the below.

As shown in fig. 1 and fig. 2, the upper net chain conveyor 8 includes an upper driving sprocket, an upper driven sprocket and an upper net chain conveyor belt, the upper driving sprocket and the upper driven sprocket are rotatably mounted in the drying chamber 6, the upper net chain conveyor belt is sleeved on the upper driving sprocket and the upper driven sprocket, a plurality of upper vents are formed in the upper net chain conveyor belt along the length direction, and the upper driving sprocket is driven by an upper motor. The lower mesh chain conveyor 17 comprises a lower driving chain wheel, a lower driven chain wheel and a lower mesh chain conveying belt, the lower driving chain wheel and the lower driven chain wheel are rotatably installed in the drying chamber 6, the lower mesh chain conveying belt is sleeved on the lower driving chain wheel and the lower driven chain wheel, a plurality of lower air vents are formed in the lower mesh chain conveying belt along the length direction, and the lower driving chain wheel is driven by a lower motor. The net chain conveyor belongs to the prior art, and its theory of operation is motor drive sprocket, and drive sprocket passes through net chain conveyer belt and drives driven sprocket and rotate together, and net chain conveyer belt can be used for carrying the material. The top of going up net chain conveyer belt and lower net chain conveyer belt is equipped with material turning device 22 respectively, material turning device 22 locates the axis of rotation on drying chamber 6 including rotating, be equipped with a plurality of returning face plates of radially arranging in the axis of rotation, the axis of rotation is through upset motor drive. Under the action of the material turning device 22, the coal slime can be sufficiently turned to be dried.

As shown in fig. 1, be equipped with around the upper air baffle 7 of going up the net chain conveyer 8, upper air baffle 7 is connected between upper net chain conveyer 8 and drying chamber 6, be equipped with down air baffle 9 around the net chain conveyer 17 down, lower air baffle 9 is connected between lower net chain conveyer 17 and drying chamber 6, be equipped with on the drying chamber 6 of upper net chain conveyer 8 one end the feed inlet, the upper air baffle 7 department of the upper net chain conveyer 8 other end is equipped with blanking mouth 23, the one end of lower net chain conveyer 17 is located the below of blanking mouth 23, be equipped with down blanking mouth 10 on the lower air baffle 9 of the lower net chain conveyer 17 other end, be equipped with on the drying chamber 6 of blanking mouth 10 below the discharge gate.

As shown in fig. 1, the upper blanking opening 23 and the lower blanking opening 10 are respectively provided with a baffle 11, and the baffle 11 is used for guiding the coal slurry to fall down.

As shown in fig. 1 and with reference to fig. 2, a bridge breaking forming distributing machine 3 is disposed at a feed inlet of the drying chamber 6, a bridge breaking device 5 and an extrusion forming distributing device 4 are sequentially disposed in the bridge breaking forming distributing machine 3 from top to bottom, and it should be noted that the bridge breaking forming distributing machine 3 belongs to the prior art, and detailed descriptions of specific structures and working principles thereof are omitted here. 3 tops of broken bridge shaping cloth machine that are located the drying chamber 6 of top are equipped with feeding conveyor 1, feeding conveyor 1 includes the feeding action wheel, the feeding from driving wheel and feeding conveyer belt, the feeding conveyer belt suit is in the feeding action wheel and the feeding from the driving wheel, the feeding action wheel passes through feeding motor drive, and when the feeding action wheel rotated, it can drive the feeding through the feeding conveyer belt and rotate from the driving wheel together, and the feeding conveyer belt can be used for carrying the material coal slime. The feed conveyor 1 belongs to the prior art, and the detailed structure and working principle thereof are not described herein again. The two ends of the feeding conveyor 1 are respectively a feeding end and a blanking end, the blanking end is arranged right above a bridge breaking forming distributor 3 of a drying chamber 6 located above, and an iron remover 2 is arranged above the feeding conveyor 1. The discharge gate department of drying chamber 6 is equipped with out feed cylinder 14, the last port that goes out feed cylinder 14 is located the below of blanking mouth 10, the 14 bottom port that goes out feed cylinder 14 that is located the drying chamber 6 of top are located the broken bridge shaping cloth machine 3 tops of drying chamber 6 that is located the below, and the 14 below that goes out feed cylinder of drying chamber 6 that is located the below is equipped with spiral discharge machine 15, the 14 bottom port below that goes out feed cylinder of drying chamber 6 that is located the below is located in the import of spiral discharge machine 15. The outlet of the spiral discharging machine 15 is used for discharging dry material coal slime. It should be noted that the bridge-breaking forming distributor 3, the iron remover 2 and the spiral discharging machine 15 are all in the prior art, and detailed descriptions of the specific structures and working principles thereof are omitted here.

As shown in fig. 1 and fig. 3, a scraper-type automatic ash removal device is disposed at the inner bottom of the drying chamber 6, the scraper-type automatic ash removal device includes a scraper 16, an ash removal driving sprocket 57, an ash removal driven sprocket 59 and a chain 58, the ash removal driving sprocket 57 and the ash removal driven sprocket 59 are respectively rotatably disposed at two ends of the inner bottom of the drying chamber 6, the chain 58 is sleeved on the ash removal driving sprocket 57 and the ash removal driven sprocket 59, the ash removal driving sprocket 57 is driven by an ash removal motor, the scraper 16 is connected to the chain 58, and an ash outlet 56 corresponding to the scraper 16 is disposed on the discharging barrel 14. When the ash removal motor drives the ash removal driving sprocket 57 to rotate, the ash removal driving sprocket 57 drives the chain 58 and the ash removal driven sprocket 59 to rotate together, and the scraper 16 is connected to the chain 58, so that when the chain 58 rotates around the ash removal driving sprocket and the ash removal driven sprocket, the chain 58 can drive the scraper 16 to move back and forth between the ash removal driving sprocket and the ash removal driven sprocket so as to scrape ash. The scraper type automatic ash removal device is started periodically, collected ash at the bottom of the drying chamber 6 is scraped to the ash outlet 56 from one end far away from the ash outlet 56 through the scraper 16, and is discharged out of the drying chamber 6 together with coal slime, and the operation of scraping ash independently can be carried out.

As shown in fig. 4 and with reference to fig. 5-7, the scraper 16 includes a socket 60 and a plug 61, the socket 60 is a triangular barrel structure, the barrel walls of the socket 60 are a first bottom barrel wall 68 and two first side barrel walls 66 that are connected to each other, the first bottom barrel wall 68 is provided with two sliding grooves 69 that are arranged along the length direction of the socket 60, the plug 61 is a triangular column structure, the external shape of the plug 61 matches the barrel cavity shape of the socket 60, the external peripheral walls of the plug 61 are an external bottom wall 64 and two external side walls 63 that are connected to each other, the external bottom wall 64 of the plug 61 is provided with two sliding blocks 65, the plug 61 is inserted into the barrel cavity of the socket 60, the two sliding blocks 65 are respectively located in the two sliding grooves 69, the two external side walls 63 of the plug 61 are respectively provided with a plurality of elastic protrusions 62, every a plurality of elastic protrusions 62 on the lateral wall 63 all arrange along the length direction of plug connector 61, be equipped with on the inner barrel wall of socket 60 with elastic protrusion 62 assorted recess 67, the one end of chain 58 is connected on a first lateral barrel wall 66 of socket 60 and a lateral wall 63 of plug connector 61, the other end of chain 58 is connected on another first lateral barrel wall 66 of socket 60 and another lateral wall 63 of plug connector 61. Thus, during the rotation of chain 58, it pulls the entire scraper 16 in motion, while the scraper 16 is in motion, the first bottom tub wall 68 of socket 60 and the outer bottom wall 64 of plug 61 are against the bottom of drying chamber 6.

As shown in fig. 4 in conjunction with fig. 5-7, the length of the scraper 16 can be adjusted according to the actual situation, i.e. the depth of the plug 61 inserted into the socket 60 is adjusted, when the plug 61 is inserted into or withdrawn from the socket 60, the plug 61 slides in the barrel cavity of the socket 60, and at the same time, the sliding blocks 65 on the plug 61 slide along the sliding grooves 69 on the socket 60. After the length of the scraper 16 is adjusted, the elastic protrusion 62 on the outer side wall 63 of the plug 61 is located in the groove 67 of the inner wall of the socket 60, and the two are clamped to play a limiting role, so that the length of the scraper 16 is fixed. Due to the elastic action of the elastic protrusion 62, when the length of the scraper 16 is adjusted, the elastic protrusion 62 can be pulled out or pushed out of the groove 67 by pulling or pushing the plug-in part 61 relative to the socket part 60, so that the clamping between the two parts is released, and then the scraper 16 is adjusted to the proper length. The elastic protrusion 62 may be made of elastic material such as rubber.

As shown in fig. 1, and as shown in fig. 2, the upper and lower net chain conveyor belts are all cleaned by the net chain automatic cleaning device, the net chain automatic cleaning device includes a high-pressure air pump 18, a high-pressure air tank 19 and a high-pressure air nozzle which are connected in sequence through a high-pressure air pipeline 20, the high-pressure air nozzle includes a first high-pressure air nozzle 21 and a second high-pressure air nozzle 55 which are identical in structure, the first high-pressure air nozzle 21 is arranged between the upper and lower conveyor belts of the upper net chain conveyor belt, the first high-pressure air nozzle 21 is arranged towards the lower conveyor belt of the upper net chain conveyor belt, the second high-pressure air nozzle 55 is arranged between the upper and lower conveyor belts of the lower net chain conveyor belt, and the second high-pressure air nozzle 55 is arranged towards the lower conveyor belt of the lower net chain conveyor belt. The high-pressure air pump 18 and the high-pressure air tank 19 are used as high-pressure air sources and supply high-pressure air to the high-pressure air nozzle, and the high-pressure air nozzle cleans coal slime blocked in the air vent through the high-pressure air. The high-pressure air pump 18 and the high-pressure air tank 19 belong to the prior art, and the detailed structure and the working principle thereof are not described herein. It should be noted that, in the present embodiment, the high-pressure air pump 18 and the high-pressure air tank 19 are both provided with only one, and the high-pressure air nozzles of the net chain conveyors respectively cleaning the two drying chambers 6 are connected with the high-pressure air tank 19 through the high-pressure air pipeline 20.

As shown in fig. 8 and with reference to fig. 9-13, each of the first high-pressure gas nozzle 21 and the second high-pressure gas nozzle 55 includes a cylindrical housing 70, an upper cylinder opening and a lower cylinder opening of the housing 70 are respectively an airflow inlet and an airflow outlet, the housing 70 includes an upper cylinder 71 and a lower cylinder 72 which are arranged up and down, an inner diameter of the lower cylinder 72 is larger than an inner diameter of the upper cylinder 71, a diversion block seat 74 is slidably and sealingly disposed in the upper cylinder 71 of the housing 70, the diversion block seat 74 is barrel-shaped, a cylinder opening of the diversion block seat 74 is disposed toward the upper cylinder opening of the housing 70, the diversion block seat 74 includes a second bottom cylinder wall 81 and a second side cylinder wall 84, a first airflow opening 83 is formed in the second side cylinder wall 84, a guide column 79 is connected to an outer side of the second bottom cylinder wall 81, a diversion support frame 80 is disposed in the lower cylinder 72, a guide opening 77 corresponding to the guide column 79 is formed in the diversion support frame 80, the guide posts 79 are inserted into the guide holes 77. Second airflow through holes 76 are formed in the diversion support frame 80, the second airflow through holes 76 penetrate through the diversion support frame 80 along the vertical direction, and therefore the second airflow through holes 76 can conduct the cylinder cavities of the lower cylinder body 72, which are located above and below the diversion support frame 80 respectively, namely, high-pressure gas above the diversion support frame 80 can flow to the lower portion of the diversion support frame 80 along the second airflow through holes 76 in the lower cylinder body 72. A spring 75 is connected between the flow guide plugging seat 74 and the flow guide support frame 80, an annular clamping table 82 is fixedly arranged at the lower end of the inner cylinder wall of the upper cylinder body 71, the flow guide plugging seat 74 is arranged in the annular clamping table 82 in a sliding sealing manner (namely, the upper cylinder body 71 is in sliding sealing with the flow guide plugging seat 74 through the annular clamping table 82), a radial flange 73 is fixedly arranged on the outer side of the barrel mouth of the flow guide plugging seat 74, a fixture block 78 is fixedly arranged at the lower end of the guide post 79, the fixture block 78 is positioned below the flow guide support frame 80, and an internal thread for connecting the high-pressure gas pipeline 20 is arranged at the upper end of the inner cylinder wall of the upper cylinder body 71. The end of the high-pressure gas pipeline 20 connected with the high-pressure gas nozzle is provided with an external thread, and the high-pressure gas pipeline 20 is fixedly connected with the high-pressure gas nozzle through a thread.

As shown in fig. 9, when the high-pressure gas nozzle is not supplied with high-pressure gas or the pressure of the high-pressure gas is not enough to compress the spring 75, the high-pressure gas nozzle is in a blocking state, that is, the diversion blocking seat 74 is in the blocking position, at this time, the diversion blocking seat 74 separates the high-pressure gas pipeline 20 from the outside, and prevents coal ash from entering the high-pressure gas pipeline 20, so that the high-pressure gas pipeline 20 can be prevented from being blocked due to the entry of the coal ash. As shown in fig. 10, high pressure gas is introduced into the gas flow inlet of the high pressure gas nozzle, and when the pressure of the high pressure gas reaches a certain degree, the high pressure gas will compress the spring 75 downwards through the diversion blocking seat 74 (the high pressure gas acts on the second bottom barrel wall 81 of the diversion blocking seat 74), and at the same time, the diversion blocking seat 74 slides downwards along the annular clamping table 82, and when sliding to a certain position, the first gas flow hole 83 on the second side barrel wall 84 enters into the lower barrel 72, and at this time, the diversion blocking seat 74 is in the conducting position, because the inner diameter of the lower barrel 72 is larger than that of the upper barrel 71, when the diversion blocking seat 74 is in the conducting position, a gap exists between the second side barrel wall 84 and the inner barrel wall of the lower barrel 72, so that the high pressure gas in the barrel cavity of the diversion blocking seat 74 enters into the gap through the first gas flow hole 83 and then enters into the barrel cavity of the lower barrel 72 above diversion support frame 80 through the gap, then enters the cylinder cavity of the lower cylinder 72 below the diversion support frame 80 through the second air flow through hole 76, and finally is ejected from the air flow outlet. When cleaning is not needed, the high-pressure gas nozzle is disconnected from high-pressure gas, the compressed spring 75 is extended and reset, then the flow guide plugging seat 74 slides upwards along the annular clamping table 82 until the first gas through hole 83 in the second side barrel wall 84 enters the barrel cavity of the upper barrel body 71, at this time, the flow guide plugging seat 74 is in a plugging position, namely plugging is achieved through sliding sealing between the flow guide plugging seat 74 and the annular clamping table 82, and as a result, coal ash outside the high-pressure gas nozzle cannot enter the high-pressure gas pipeline 20 through the flow guide plugging seat 74, so that the high-pressure gas pipeline 20 can be prevented from being plugged by the coal ash.

As shown in fig. 9 and in conjunction with fig. 10-13, when the diversion plug seat 74 slides up and down along the annular clamping platform 82, the guide posts 79 also slide up and down along the guide holes 77 on the diversion support frame 80, and the guide posts 79 play a role in guiding. When the guide post 79 slides upwards to a certain position, the fixture block 78 fixedly arranged at the lower end of the guide post 79 abuts against the flow guide support frame 80 to prevent the guide post 79 and the flow guide plugging seat 74 from continuously sliding upwards, so that the plugging failure caused by the separation of the flow guide plugging seat 74 and the annular fixture table 82 is prevented. When the flow guide plugging seat 74 slides downwards to a certain position along the annular clamping table 82, the radial flange 73 abuts against the annular clamping table 82, and at the moment, the flow guide plugging seat 74 is at the maximum conduction position, namely the first air flow hole 83 completely enters the lower cylinder 72. The radial flange 73 is designed to abut against the annular clamping table 82, so as to prevent the high-pressure gas nozzle from being damaged due to the excessive pressure of the high-pressure gas, for example, when the pressure of the high-pressure gas is excessive, if the annular clamping table 82 is not provided, the diversion blocking seat 74 may completely enter the lower cylinder 72, and incline under the action of the high-pressure gas flow to be clamped in the lower cylinder 72, so that the blocking state cannot be recovered.

As shown in fig. 1, the air outlet of the upper air chamber is connected to a main air pipe 25, and the air from the drying chamber 6 enters an air treatment device (not shown) through the main air pipe 25, is dehumidified, heated, and the like, and then returns to the drying chamber 6 through the first air inlet and the second air inlet (in the process, the first fan 28 and the second fan 38 provide power for air circulation), so as to dry the coal slurry. The main air pipeline 25 is provided with a double exhaust valve 24, the lower air chamber of the drying chamber 6 is provided with an external circulation air inlet, the external circulation air inlet is provided with a double air inlet valve 13, and the external circulation air inlet in the drying chamber 6 is provided with a third fan 12. Through the detection of the intelligent detection control system, when the ambient temperature and humidity outside the drying chamber 6 are appropriate, the first fan 28 and the second fan 38 are closed, the dual air inlet valve 13, the dual air outlet valve 24 and the third fan 12 are opened (the centrifugal fan is selected for the third fan 12), and the coal slime is dried by using the outside air.

As shown in fig. 1, the utility model discloses multistage net chain closed coal slime desiccator is including two drying chamber 6 that arrange from top to bottom, and 6 series arrangements of two drying chamber, "series arrangement" indicates the 6 discharge gates of drying chamber that are located the top and the 6 feed inlets of drying chamber that are located the below arrange relatively, and the coal slime can be from the 6 discharge gates of drying chamber of top and fall into the 6 feed inlets of drying chamber of below promptly, that is to say, the coal slime can be from the top down dried through two drying chamber 6 in proper order. For convenience of explanation, the drying chamber 6 located above is referred to as an upper drying chamber, the drying chamber 6 located below is referred to as a lower drying chamber, and the upper and lower drying chambers have the same structure. Coal slurry to be dried enters the upper drying chamber from a feeding hole of the upper drying chamber and falls on the upper mesh chain conveyor 8, the coal slurry is conveyed to the lower mesh chain conveyor 17 by the upper mesh chain conveyor 8 along with the rotation of the upper mesh chain conveyor 8, then the coal slurry is conveyed to a discharging hole below the upper drying chamber by the lower mesh chain conveyor 17 along with the rotation of the lower mesh chain conveyor 17, the coal slurry enters the feeding hole of the lower drying chamber through the discharging hole of the upper drying chamber due to the fact that the feeding hole of the lower drying chamber and the discharging hole of the upper drying chamber are arranged oppositely, the conveying mode of the coal slurry in the lower drying chamber is the same as that of the upper drying chamber, and the description is omitted. And the coal slime is discharged from a discharge hole of the lower drying chamber after passing through the lower drying chamber. Since the upper drying chamber and the lower drying chamber have the same structure, only one drying chamber will be described as an example. In the conveying process of the coal slime in the drying chamber 6, the first air inlet is filled with air (with a certain temperature) for drying the coal slime on the upper net chain conveyor 8, the second air inlet is filled with air (with a certain temperature) for sequentially drying the coal slime on the lower net chain conveyor 17 and the upper net chain conveyor 8 from bottom to top, and finally, the air filled from the first air inlet and the second air inlet is discharged from the air outlet of the drying chamber 6. Therefore, the utility model discloses area is little, the energy consumption is low, the running cost is low, can realize accurate drying to no flue gas, dust discharge.

The working process of the present invention is described below.

As shown in fig. 1, a material coal slurry (with a water content of 25% -30%) is fed into a bridge-breaking forming distributor 3 of an upper drying chamber 6 from a feeding conveyor 1 through an iron remover 2, the coal slurry is extruded into uniform particles in the upper drying chamber 6 and then spread at one end of an upper chain conveyor 8, the upper chain conveyor 8 rotates to convey the coal slurry to the other end of the upper chain conveyor 8 and drop at one end of a lower chain conveyor 17 through an upper blanking port 23, the lower chain conveyor 17 rotates to convey the coal slurry to the other end of the lower chain conveyor 17 and drop into a discharging barrel 14 of a discharging port through a lower blanking port 10 and enter a bridge-breaking forming distributor 3 of a lower drying chamber 6 through the discharging barrel 14, the conveying mode of the coal slurry in the lower drying chamber 6 is the same as that of the upper drying chamber 6, and will not be described in detail herein. After passing through the drying chamber 6 positioned below, the coal slime enters the spiral discharging machine 15 from the discharging barrel 14 of the drying chamber 6 positioned below, and finally the dried coal slime (with the water content of 10% -15%) is sent out through the spiral discharging machine 15. Since the upper and lower drying chambers 6 have the same structure, only one drying chamber 6 will be described below. A plurality of material turning devices 22 are arranged above the upper net chain conveyor 8 and the lower net chain conveyor 17 to turn over coal slime particles so as to fully dry the coal slime particles. The coal slime tiling is on last net chain conveyor 8 and lower net chain conveyor 17, a plurality of last blow vents have evenly been seted up along length direction on the net chain conveyor of going up, a plurality of lower blow vents have evenly been seted up along length direction on the lower net chain conveyor of going up, there are the deep bead around net chain conveyor 8 and lower net chain conveyor 17, the air passes through from the lower blow vent of net chain conveyor of going down and the last blow vent of net chain conveyor of going up, contact the heat transfer with the coal slime simultaneously, take away the moisture in the coal slime (dry coal slime promptly), become humid air, discharge from the last air chamber of dry cavity 6, get into air treatment device, the air after handling returns dry cavity 6 from first air intake and second air intake again, so circulate, realize the dry coal slime of closed circulation wind.

The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.

Claims (10)

1. The utility model provides a multistage net chain closed coal slime desiccator which characterized in that: including two dry chambers who arranges from top to bottom, the top of dry chamber is equipped with the feed inlet, the below of dry chamber is equipped with the discharge gate, from the top down is equipped with net chain conveyor and lower net chain conveyor in proper order in the dry chamber, net chain conveyor and lower net chain conveyor separate dry chamber for last air chamber, cavity air chamber and air chamber down from the top down, the air outlet has been seted up to last air chamber, first air intake has been seted up to the cavity air chamber, be equipped with first fan on the first air intake, the second air intake has been seted up to the air chamber down, be equipped with the second fan on the second air intake, the discharge gate that is located the dry chamber of top and the feed inlet relative arrangement of the dry chamber that is located the below.

2. The multi-stage network-linked closed coal slime drying machine as claimed in claim 1, wherein: the upper net chain conveyor comprises an upper driving chain wheel, an upper driven chain wheel and an upper net chain conveying belt, the upper driving chain wheel and the upper driven chain wheel are all rotatably installed in the drying chamber, the upper net chain conveying belt is sleeved on the upper driving chain wheel and the upper driven chain wheel, a plurality of upper air vents are formed in the upper net chain conveying belt along the length direction, the upper driving chain wheel is driven by an upper motor, the lower net chain conveyor comprises a lower driving chain wheel, a lower driven chain wheel and a lower net chain conveying belt, the lower driving chain wheel and the lower driven chain wheel are all rotatably installed in the drying chamber, the lower net chain conveying belt is sleeved on the lower driving chain wheel and the lower driven chain wheel, a plurality of lower air vents are formed in the lower net chain conveying belt along the length direction, and the lower driving chain wheel is driven by a lower motor.

3. The multi-stage network-linked closed coal slime drying machine as claimed in claim 2, wherein: the top of going up net chain conveyer belt and lower net chain conveyer belt is equipped with material turning device respectively, material turning device locates the axis of rotation on the drying chamber including rotating, be equipped with a plurality of returning face plates of radially arranging in the axis of rotation, the axis of rotation is through upset motor drive.

4. The multi-stage network-linked closed coal slime drying machine as claimed in claim 3, wherein: the utility model discloses a drying device, including upper and lower net chain conveyer, upper and lower net chain conveyer is equipped with down the blanking mouth, the one end of lower net chain conveyer is located the below of blanking mouth, be equipped with down the blanking mouth on the lower shield of net chain conveyer, the upper and lower shield is connected between net chain conveyer and drying chamber, be equipped with on the drying chamber of net chain conveyer one end the feed inlet, the last shield department of net chain conveyer other end is equipped with the blanking mouth, the one end of lower net chain conveyer is located the below of blanking mouth, be equipped with down the blanking mouth on the lower shield of the lower net chain conveyer other end, be equipped with on the drying chamber of blanking mouth below the discharge gate.

5. The multi-stage network-linked closed coal slime drying machine as claimed in claim 4, wherein: a bridge breaking forming distributing machine is arranged at a feed port of the drying chamber, a bridge breaking device and an extrusion forming distributing device are sequentially arranged in the bridge breaking forming distributing machine from top to bottom, a feed conveyor is arranged above the bridge breaking forming distributing machine of the drying chamber above the bridge breaking forming distributing machine and comprises a feed driving wheel, a feed driven wheel and a feed conveying belt, the feed conveying belt is sleeved on the feed driving wheel and the feed driven wheel, the feed driving wheel is driven by a feed motor, an iron remover is arranged above the feed conveyor, a discharge barrel is arranged at a discharge port of the drying chamber, an upper port of the discharge barrel is positioned below the discharge port, a lower port of the discharge barrel of the drying chamber above the drying chamber is arranged above the bridge breaking forming distributing machine of the drying chamber below the discharge barrel, and a spiral discharge machine is arranged below the discharge barrel of the drying chamber below the discharge barrel, and the inlet of the spiral discharging machine is arranged below the lower port of the discharging barrel of the drying chamber below the spiral discharging machine.

6. The multi-stage network-linked closed coal slime drying machine as claimed in claim 5, wherein: the interior bottom of drying chamber is equipped with scrapes automatic ash removal device of board-like, scrape automatic ash removal device of board-like and include scraper blade, deashing drive sprocket, deashing driven sprocket and chain, deashing drive sprocket and deashing driven sprocket rotate the both ends of locating the interior bottom of drying chamber respectively, the chain suit is on deashing drive sprocket and deashing driven sprocket, the deashing drive sprocket passes through deashing motor drive, the scraper blade connect in on the chain, be equipped with the ash outlet corresponding with the scraper blade on the play feed cylinder.

7. The multi-stage network-linked closed coal slime drying machine as claimed in claim 6, wherein: the scraper blade comprises a socket piece and a plug piece, the socket piece is of a triangular barrel-shaped structure, the barrel walls of the socket piece are a first bottom barrel wall and two first side barrel walls which are connected with each other, two sliding chutes which are arranged along the length direction of the socket piece are formed in the first bottom barrel wall, the plug piece is of a triangular columnar structure, the external shape of the plug piece is matched with the barrel cavity shape of the socket piece, the outer peripheral walls of the plug piece are an outer bottom wall and two outer side walls which are connected with each other, two sliding blocks are arranged on the outer bottom wall of the plug piece, the plug piece is inserted into the barrel cavity of the socket piece, the two sliding blocks are respectively positioned in the two sliding chutes, a plurality of elastic bulges are respectively arranged on the two outer side walls of the plug piece, a plurality of elastic bulges on each outer side wall are all arranged along the length direction of the plug piece, and grooves which are matched with the elastic bulges are formed in the inner barrel wall of the socket piece, one end of the chain is connected to one first lateral barrel wall of the socket piece and one outer lateral wall of the plug piece, and the other end of the chain is connected to the other first lateral barrel wall of the socket piece and the other outer lateral wall of the plug piece.

8. The multi-stage network-linked closed coal slime drying machine as claimed in claim 7, wherein: go up the net chain conveyer belt and all wash through net chain self-cleaning device down, net chain self-cleaning device includes high-pressure gas pump, high-pressure gas jar and the high-pressure gas nozzle that connects gradually through the high-pressure gas pipeline, the high-pressure gas nozzle includes the same first high-pressure gas nozzle of structure and second high-pressure gas nozzle, first high-pressure gas nozzle is located between the upper and lower conveyer belt of net chain conveyer belt, first high-pressure gas nozzle is arranged towards the lower conveyer belt of net chain conveyer belt, second high-pressure gas nozzle is located down between the upper and lower conveyer belt of net chain conveyer belt, second high-pressure gas nozzle is arranged towards the lower conveyer belt of net chain conveyer belt.

9. The multi-stage network-linked closed coal slime drying machine of claim 8, wherein: the first high-pressure gas nozzle and the second high-pressure gas nozzle both comprise cylindrical shells, the upper and lower openings of the shells are respectively an airflow inlet and an airflow outlet, the shells comprise an upper barrel body and a lower barrel body which are arranged up and down, the inner diameter of the lower barrel body is larger than that of the upper barrel body, a flow guide plugging seat is arranged in the upper barrel body of the shell in a sliding sealing manner, the flow guide plugging seat is barrel-shaped, the opening of the flow guide plugging seat is arranged towards the upper opening of the shell, the flow guide plugging seat comprises a second bottom barrel wall and a second side barrel wall, a first airflow hole is formed in the second side barrel wall, a guide column is connected to the outer side of the second bottom barrel wall, a flow guide support frame is arranged in the lower barrel body, a guide hole corresponding to the guide column is formed in the flow guide support frame, the guide column is inserted into the guide hole, and a second airflow through hole is formed in the flow guide support frame, the second airflow through hole penetrates through the diversion support frame along the vertical direction, a spring is connected between the diversion plugging seat and the diversion support frame, an annular clamping table is fixedly arranged at the lower end of the inner cylinder wall of the upper cylinder body, the diversion plugging seat is arranged in the annular clamping table in a sliding sealing mode, a radial flange is fixedly arranged on the outer side of a barrel opening of the diversion plugging seat, a clamping block is fixedly arranged at the lower end of the guide column and is located below the diversion support frame, and an internal thread used for being connected with a high-pressure gas pipeline is arranged at the upper end of the inner cylinder wall of the upper cylinder body.

10. The multi-stage network-linked closed coal slime drying machine of claim 9, wherein: the air outlet of the upper air chamber is connected with a main air pipeline, a double exhaust valve is arranged on the main air pipeline, an external circulation air inlet is formed in the lower air chamber of the drying chamber, a double air inlet valve is arranged at the external circulation air inlet, and a third fan is arranged at the external circulation air inlet in the drying chamber.

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