CN213103173U - Coal dressing dust collector - Google Patents
Coal dressing dust collector Download PDFInfo
- Publication number
- CN213103173U CN213103173U CN202021973326.XU CN202021973326U CN213103173U CN 213103173 U CN213103173 U CN 213103173U CN 202021973326 U CN202021973326 U CN 202021973326U CN 213103173 U CN213103173 U CN 213103173U
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- dust
- screening tower
- coal
- screening
- dust collector
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- 239000000428 dust Substances 0.000 title claims abstract description 97
- 239000003245 coal Substances 0.000 title claims abstract description 75
- 238000012216 screening Methods 0.000 claims abstract description 58
- 239000000463 material Substances 0.000 claims abstract description 32
- 238000010521 absorption reaction Methods 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- 238000005201 scrubbing Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 abstract description 22
- 238000000034 method Methods 0.000 abstract description 14
- 239000010419 fine particle Substances 0.000 abstract description 4
- 239000004744 fabric Substances 0.000 description 8
- 238000000926 separation method Methods 0.000 description 3
- 238000007873 sieving Methods 0.000 description 3
- 239000008187 granular material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of coal dressing and dust removal, and discloses a coal dressing and dust removal device, which comprises a cyclone dust collector, a gas washing pool and a screening tower, wherein the screening tower is provided with a raw coal feed inlet near the top, and a discharge outlet at the bottom; a lump material outlet is formed in the middle lower part of the screening tower, and a screen is obliquely inserted into the edge of the bottom of the lump material outlet; the side wall of the screening tower is fixedly connected with a dust absorption pipeline with an inlet end positioned between the feeding port and the lump material outlet, the dust absorption pipeline is communicated with an air inlet pipe of the cyclone dust collector, an exhaust funnel of the cyclone dust collector is provided with an air exhaust fan, and the tail end of an air outlet pipeline of the air exhaust fan is positioned below the liquid level of the air washing pool. In the embodiment, the raw coal blocks are pre-screened by the screening tower, and dust and fine particles in the blocky raw coal are removed, so that the dust amount in the coal dressing process can be reduced, the workload of the subsequent concentration process is reduced, and the coal dressing efficiency is improved; the fine dust in the gas discharged from the cyclone dust collector is adsorbed by the water in the gas washing pool, so that the harmless discharge of the gas is realized.
Description
Technical Field
The utility model relates to a coal dressing dust removal technical field, concretely relates to coal dressing dust collector.
Background
Coal dressing is also called coal washing, and the process of selecting clean coal meeting the user quality requirement from raw coal. The existing coal dressing equipment is used for directly dressing raw coal, but the raw coal contains impurities such as coal gangue and the like, and also contains a lot of fine particles and dust. In the process of raw coal concentration, the existence of fine particles and dust will increase the workload of coal separation equipment, and the coal separation efficiency is also lower.
In addition, a large amount of dust is generated in the air in the coal preparation process, the dust in the air needs to be filtered, and a device for filtering in the coal preparation process is a coal preparation dust removal device. The air flow treated by these dust-removing equipments may also contain some fine dust, and the dust discharged into the atmosphere also causes a great problem of environmental pollution.
SUMMERY OF THE UTILITY MODEL
Based on the problems, the utility model provides a coal dressing dust collector sieves the raw coal piece in advance through the screening tower to get rid of dust and tiny granule in the cubic raw coal, can reduce the dust volume in the coal dressing process, reduce the work load of follow-up choice process, improve the coal dressing efficiency; and the fine dust carried in the gas discharged from the cyclone dust collector is adsorbed by the water in the gas washing pool, so that the aim of pre-screening and dust removal before coal washing is fulfilled, and the harmless discharge of the gas is realized.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
a coal dressing dust collector comprises a cyclone dust collector, a gas washing pool and a screening tower with a sealed top, wherein a feed inlet communicated with a discharge end of a raw coal conveying mechanism is formed in the position, close to the top, of the screening tower, and a discharge outlet is formed in the bottom of the screening tower; a lump material outlet is formed in the middle lower part of the screening tower, a screen is obliquely inserted into the bottom edge of the lump material outlet, the screen is obliquely and upwards inserted into the screening tower from the bottom edge of the lump material inlet, the edge of the screen positioned in the inner cavity of the screening tower is fixedly connected with the inner wall of the screening tower, and a guide chute positioned outside the screening tower is obliquely arranged at the lump material outlet; the side wall of the screening tower is fixedly connected with a dust absorption pipeline communicated with the inner cavity of the screening tower, the inlet end of the dust absorption pipeline is positioned between the feed inlet and the lump material outlet, the outlet end of the dust absorption pipeline is communicated with the air inlet pipe of the cyclone dust collector, an exhaust funnel of the cyclone dust collector is provided with an air exhaust fan, and the outlet end of the air outlet pipeline of the air exhaust fan is positioned below the liquid level of the air washing pool.
Furthermore, a baffle plate for preventing lump materials from entering the dust absorption pipeline is obliquely fixed in the screening tower, one end of the baffle plate is fixed right above the inlet end of the dust absorption pipeline in the screening tower, and the other end of the baffle plate is obliquely and downwards arranged towards the middle of the screening inner cavity.
Further, a vibrator is arranged at the bottom of the screen.
Furthermore, a jet pipe is arranged on an air outlet pipeline of the air exhaust fan, the jet pipe comprises a necking section and an expanding section which are sequentially arranged along the airflow direction, and a water inlet pipe is arranged on the outer wall between the necking section and the expanding section.
Further, the raw coal conveying mechanism is a screw conveyor.
Compared with the prior art, the beneficial effects of the utility model are that: in the embodiment, the raw coal blocks are pre-screened by the screening tower, and dust and fine particles in the blocky raw coal are removed, so that the dust amount in the coal dressing process can be reduced, the workload of the subsequent concentration process is reduced, and the coal dressing efficiency is improved; and the fine dust carried in the gas discharged from the cyclone dust collector is adsorbed by the water in the gas washing pool, so that the aim of pre-screening and dust removal before coal washing is fulfilled, and the harmless discharge of the gas is realized.
Drawings
FIG. 1 is a schematic structural diagram of a coal preparation and dust removal device in an embodiment;
wherein: 1. a cyclone dust collector; 2. a gas washing pool; 3. a screening tower; 4. a raw coal conveying mechanism; 5. a discharge port; 6. a lump material outlet; 7. screening a screen; 8. a material guide chute; 9. a dust collection duct; 10. an air exhaust fan; 11. a baffle plate; 12. a necking section; 13. a diameter expanding section; 14. a water inlet pipe; 15. a belt conveyor.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.
Example (b):
referring to fig. 1, a coal dressing dust collector comprises a cyclone dust collector 1, a scrubbing pool 2 and a screening tower 3 with a sealed top, wherein a feed inlet communicated with a discharge end of a raw coal conveying mechanism 4 is formed in the position, close to the top, of the screening tower 3, and a discharge outlet 5 is formed in the bottom of the screening tower 3; a lump material outlet 6 is formed in the middle lower portion of the screening tower 3, a screen 7 is obliquely inserted into the bottom edge of the lump material outlet 6, the screen 7 is obliquely and upwardly inserted into the screening tower 3 from the bottom edge of the lump material inlet, the edge of the screen 7 positioned in the inner cavity of the screening tower 3 is fixedly connected with the inner wall of the screening tower 3, and a material guide chute 8 positioned outside the screening tower 3 is obliquely arranged at the lump material outlet 6; the side wall of the screening tower 3 is fixedly connected with a dust absorption pipeline 9 communicated with the inner cavity of the screening tower 3, the inlet end of the dust absorption pipeline 9 is positioned between the feed inlet and the lump material outlet 6, the outlet end of the dust absorption pipeline 9 is communicated with the air inlet pipe of the cyclone dust collector 1, an exhaust funnel of the cyclone dust collector 1 is provided with an air exhaust fan 10, and the outlet end of the air outlet pipeline of the air exhaust fan 10 is positioned below the liquid level of the air washing pool 2.
In the embodiment, the raw coal conveying mechanism 4 conveys raw coal blocks to the top of the screening tower 3, the raw coal blocks freely fall from the top of the conveying tower, the screen 7 in the screening tower 3 screens off lump materials with the diameter smaller than the aperture of the screen 7 in the raw coal blocks, the lump materials fall to the bottom of the screening tower 3, and the lump materials are discharged from the discharge port 5 at the bottom of the screening tower 3; because the screen 7 is obliquely arranged, the raw coal blocks with the diameter larger than the aperture of the screen 7 on the screen 7 roll down to the block outlet 6 along the upper surface of the screen 7, and are finally guided out by the guide chute 8 and then conveyed to a coal dressing position for clean coal dressing (gravity dressing, flotation or magnetic dressing, etc.). In the process that the raw coal blocks fall to the screen 7, starting an air exhaust fan 10 to exhaust air, sucking air from a raw coal conveying mechanism 4, a block outlet 6 or a discharge port 5 at the bottom of a screening tower 3, bringing dust in the raw coal into a dust absorption pipeline 9, and enabling air flow with the dust in the dust absorption pipeline 9 to enter a cyclone dust collector 1, wherein the cyclone dust collector 1 comprises an air inlet pipe, a cylinder, a conical cylinder, a dust collection chamber and an exhaust cylinder; the outlet end of the air inlet pipe is tangent to the inner wall of the cylinder; the gas-solid separation of the gas flow with dust is realized in the cyclone dust collector 1, the dust is collected in the dust collecting chamber of the cyclone dust collector 1, the gas is discharged into the gas washing pool 2 through the exhaust funnel, the water is filled in the gas washing pool 2, and the dust which is carried in the gas and is not removed by the cyclone dust collector 1 is absorbed by the water in the gas washing pool 2, so that the purposes of coal washing and dust removal are achieved, and the harmless discharge of the gas is realized. This embodiment is passed through the screening tower 3 with the raw coal piece in advance through the screening to dust and tiny granule in to the cubic raw coal are got rid of, can reduce the dust volume of coal dressing in-process, reduce the work load of follow-up choice process, improve the coal dressing efficiency.
When the blocky raw coal falls downwards from the top of the screening tower 3, part of the blocky raw coal enters the dust suction pipeline 9, so that the pipe blockage phenomenon of the dust suction pipeline 9 is caused. In this embodiment, a baffle 11 for preventing lump materials from entering the dust collection pipeline 9 is obliquely fixed in the sieving tower 3, one end of the baffle 11 is fixed right above the inlet end of the dust collection pipeline 9 in the sieving tower 3, and the other end of the baffle is obliquely and downwardly arranged towards the middle of the sieving inner cavity. Baffle 11's setting can play and separate the fender effect, prevents that the cubic raw coal that drops from getting into dust absorption pipeline 9 in, guarantees that the coal washing process can effectively remove dust.
The bottom of screen cloth 7 is provided with the vibrator, and cubic raw coal drops on screen cloth 7, produces easily and piles up the phenomenon, through setting up the vibrator in screen cloth 7 bottom, firstly can make the cubic raw coal of screen cloth 7 top flow out along screen cloth 7 and guiding gutter, secondly can accelerate the screening speed of raw coal on the screen cloth 7, and can also shake off some blocks that block in screen cloth 7 downthehole to 3 bottoms of screening tower through the vibration, reduce the problem of screen cloth 7 mesh jam.
The air outlet pipeline of the air exhaust fan 10 is provided with a jet pipe, the jet pipe comprises a necking section 12 and an expanding section 13 which are sequentially arranged along the air flow direction, and a water inlet pipe 14 is arranged on the outer wall between the necking section 12 and the expanding section 13. After most of dust is removed by the cyclone dust collector 1, part of fine dust can be discharged through the exhaust funnel along with the air flow, in the embodiment, the jet pipe is arranged on the air outlet pipeline of the air exhaust fan 10, when the air flow flows through the space between the contraction section 12 and the expansion section 13 of the jet pipe, negative pressure can be generated in the water inlet pipe 14, water in the water inlet pipe 14 is sucked into the jet pipe, the water and the air flow with the fine dust are fully mixed in the expansion section 13, the fine dust in the air flow can be adsorbed and then sprayed into the air washing pool 2, the removal efficiency of the fine dust can be greatly improved, and clean air discharged from the air washing pool 2 can directly enter the atmosphere. The water that the 14 distal ends of inlet tube in this embodiment inserted in the pond of washing gas 2 liquid level below, and the water in the pond of washing gas 2 of suction that can be convenient realizes and the mixing of the intraductal air current of efflux, but for preventing that inlet tube 14 from being blockked up by the particulate matter of the aquatic in the pond of washing gas 2, inlet tube 14 also can insert the water source alone in the in-service use process, prevents that inlet tube 14 from blockking up.
The raw coal conveying mechanism 4 in the embodiment is a screw conveyor, so that the closed treatment in the processes of raw coal mining, conveying and coal dressing can be realized, and the dust pollution is reduced.
It should be noted that, the dust that produces in lump material export 6 and discharge gate 5 position also can be inhaled to screening tower 3 in, the back gets into cyclone 1 and scrubbing bath 2 through dust absorption pipeline 9 and removes dust and handles, so the material transport of lump material export 6 and discharge gate 5 in this embodiment then can adopt band conveyer 15 to transport to follow-up processing place, reduce dust pollution from the source in, lump material export 6 and discharge gate 5 adopt band conveyer 15, compare in transporting whole adoption screw conveyer and can reduce equipment cost and later maintenance cost.
The embodiment of the present invention is the above. The specific parameters in the above embodiments and examples are only for the purpose of clearly showing the verification process of the present invention, and are not used to limit the protection scope of the present invention, which is still subject to the claims, and all the equivalent structural changes made by using the contents of the specification and drawings of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A coal dressing dust collector which characterized in that: the device comprises a cyclone dust collector (1), a scrubbing pool (2) and a screening tower (3) with a sealed top, wherein a feed inlet communicated with a discharge end of a raw coal conveying mechanism (4) is formed in the position, close to the top, of the screening tower (3), and a discharge outlet (5) is formed in the bottom of the screening tower (3); a lump material outlet (6) is formed in the middle lower portion of the screening tower (3), a screen (7) is obliquely inserted into the bottom edge of the lump material outlet (6), the screen (7) is obliquely and upwards inserted into the screening tower (3) from the bottom edge of the lump material inlet, the edge of the screen (7) positioned in the inner cavity of the screening tower (3) is fixedly connected with the inner wall of the screening tower (3), and a material guide groove (8) positioned outside the screening tower (3) is obliquely arranged at the lump material outlet (6); screening tower (3) lateral wall fixedly connected with and screening tower (3) inner chamber intercommunication dust absorption pipeline (9), the entrance point of dust absorption pipeline (9) is located between feed inlet and lump material export (6), the exit end of dust absorption pipeline (9) and the intake pipe intercommunication of cyclone (1), be provided with air exhaust fan (10) on the aiutage of cyclone (1), the air-out pipeline exit end of air exhaust fan (10) is located and washes gas pond (2) liquid level under.
2. The coal dressing dust collector of claim 1, wherein: baffle (11) that prevent the lump material to get into in dust absorption pipeline (9) are fixed with to the slope in screening tower (3), baffle (11) one end is fixed in screening tower (3) directly over dust absorption pipeline (9) entrance point, and the other end sets up downwards towards the slope of screening inner chamber middle part direction.
3. The coal dressing dust collector of claim 1, wherein: and a vibrator is arranged at the bottom of the screen (7).
4. The coal dressing dust collector of claim 1, wherein: the jet pipe is arranged on an air outlet pipeline of the air exhaust fan (10), the jet pipe comprises a necking section (12) and an expanding section (13) which are sequentially arranged along the air flow direction, and a water inlet pipe (14) is arranged on the outer wall between the necking section (12) and the expanding section (13).
5. The coal preparation dust collector of any one of claims 1-4, wherein: the raw coal conveying mechanism (4) is a screw conveyor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021973326.XU CN213103173U (en) | 2020-09-10 | 2020-09-10 | Coal dressing dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021973326.XU CN213103173U (en) | 2020-09-10 | 2020-09-10 | Coal dressing dust collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213103173U true CN213103173U (en) | 2021-05-04 |
Family
ID=75661417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021973326.XU Expired - Fee Related CN213103173U (en) | 2020-09-10 | 2020-09-10 | Coal dressing dust collector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213103173U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114405673A (en) * | 2021-12-22 | 2022-04-29 | 中煤科工集团南京设计研究院有限公司 | Device for recovering coal washing medium from clean coal centrifugate |
-
2020
- 2020-09-10 CN CN202021973326.XU patent/CN213103173U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114405673A (en) * | 2021-12-22 | 2022-04-29 | 中煤科工集团南京设计研究院有限公司 | Device for recovering coal washing medium from clean coal centrifugate |
| CN114405673B (en) * | 2021-12-22 | 2024-02-02 | 中煤科工集团南京设计研究院有限公司 | Device for recovering coal washing medium from clean coal centrifugate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210504 |