Dust removal equipment for coal mine

Abstract

The utility model discloses dust removal equipment for a coal mine, which belongs to the technical field of dust removal in coal mine production and comprises a screening box, a dust removal box and a water storage box, a vibrating screen is arranged in the screening box, an air blower and a ventilation slot are respectively arranged on opposite side walls of the screening box, and a partition plate is arranged on the bottom wall of the dust removal box. Two gas filter screens are arranged on the side, close to the ventilation groove, of the partition plate, a dust outlet hopper is arranged at the bottom ends of the two gas filter screens, a reciprocating lead screw is rotationally arranged between the two gas filter screens, a cleaning frame is slidably arranged on the outer wall of the reciprocating lead screw, and bristles are fixedly arranged on the face, close to the two gas filter screens, of the cleaning frame; two liquid filter screens are arranged below the spray head, and the spray head is communicated with the bottom of the dust removal box and the water storage box through water conveying pipes. And dust-removed water can be recycled after being filtered by the two liquid filter screens, so that water resources are saved, the surfaces of the two gas filter screens can be cleaned in time, and filter holes are prevented from being blocked.

Description

TECHNICAL FIELD

[0001] The utility model relates to a coal mine production dust removal technical field, concretely relates to a dust removal equipment for coal mine. BACKGROUND

[0002] In the coal mine production process, various solid substances and fine particles will be produced, which are called dust. These dusts are mainly fine particles formed by crushing of coal and rock during mining and processing, and dusts formed by flying of some construction materials used in coal mines during operation, such as cement in anchor spraying operation.

[0003] The dust in coal mine production has potential harm to the environment and human health. Inhalable particles in the dust can enter the human lung through respiration, and long-term inhalation may cause occupational diseases such as pneumoconiosis. In addition, dust may also participate in gas explosion under certain conditions, which poses a threat to mine safety and worker health.

[0004] In order to effectively control the dust in coal mine production, various dust prevention measures are taken, including using dust removal equipment in the process of coal mine screening. Most of the dust removal equipment uses filter screen or water spraying wet dust removal method for dust removal. However, the filter screen is easy to be blocked by dust after long-term use, which affects the subsequent filtering effect if not cleaned in time. In addition, the water spraying dust removal method uses a large amount of water, which will cause waste of water resources and increase of cost if the water is not recycled. UTILITY MODEL CONTENT

[0005] In order to solve the technical problems of the filter screen being easy to be blocked by dust after long-term use, affecting the subsequent filtering effect if not cleaned in time, and the water spraying dust removal method using a large amount of water, which will cause waste of water resources and increase of cost if the water is not recycled, the utility model provides a dust removal equipment for coal mine.

[0006] A dust removal equipment for coal mine, comprising a screening box, a dust removal box and a water storage tank, a vibrating screen is arranged inside the screening box, a blower and a ventilation slot are arranged on the opposite side walls of the screening box, a partition plate is arranged on the bottom wall of the dust removal box, two gas filter screens are arranged on the side of the partition plate close to the ventilation slot, a dust discharge hopper is arranged at the bottom end of the two gas filter screens, a reciprocating screw rod is rotatably arranged between the two gas filter screens, a cleaning frame is slidably arranged on the outer wall of the reciprocating screw rod, bristles are fixedly arranged on the side of the cleaning frame close to the two gas filter screens, a spray head is arranged on the other side of the partition plate, two liquid filter screens are arranged below the spray head, and the spray head, the bottom of the dust removal box and the water storage tank are connected by water supply pipes.

[0007] More preferably, the top wall of the screening box is provided with a feeding hopper, the inner side wall of the screening box is symmetrically provided with two groups of supporting blocks, the top wall of each group of supporting blocks is fixedly provided with a spring, the vibrating screen is obliquely arranged, the bottom wall of the vibrating screen is fixedly connected with the spring, the bottom wall of the vibrating screen is provided with a vibrating motor, a flow guide funnel is arranged below the vibrating screen, and the oblique end of the vibrating screen and the bottom end of the flow guide funnel are both provided with a discharging pipe.

[0008] More preferably, the air outlet of the ventilation groove is fixedly provided with an air guide groove, the air outlets of the air guide groove are opposite to two gas filter screens, the two gas filter screens are respectively an activated carbon filter layer and a ceramic filter layer, a horizontal plate and a vertical plate are fixedly arranged at the gap between the two gas filter screens and the side wall of the dust removal box, the bottom end of the reciprocating screw rod is rotatably arranged on the top wall of the horizontal plate, the top end of the reciprocating screw rod penetrates through the top wall of the dust removal box and is arranged on the output end of the motor, a limiting groove is arranged on the vertical plate, and the cleaning frame can move on the limiting groove.

[0009] More preferably, the cleaning frame comprises two short rods and three long rods which are connected with each other, the two short rods are slidably arranged on the reciprocating screw rod and the limiting groove respectively, the one side of the three long rods close to the two gas filter screens is fixedly provided with brush hairs, and the dust discharging hopper is embeddedly arranged on the bottom wall of the dust removal box.

[0010] More preferably, the two liquid filter screens are arranged between the partition plate and the side wall of the dust removal box and are respectively a glass fiber filter layer and a polypropylene filter layer, the bottom of the liquid filter screen is provided with a drain pipe, and the side wall of the dust removal box beside the spray head is provided with an air outlet pipe.

[0011] More preferably, the water conveying pipe is internally provided with a three-way valve, one end of the three-way valve penetrates through the side wall of the dust removal box and is arranged below the liquid filter screen, and the other two ends of the three-way valve are respectively connected with a plurality of spray heads and a water storage tank.

[0012] Compared with the prior art, the dust removal device has the advantages that in the process of screening coal, the dust exposed by vibration and throwing is blown to the ventilation groove by starting the air blower, is filtered through the two gas filter screens, is removed by spraying and humidifying, and is then discharged to the outside, the water for removing dust can be recycled after being filtered through the two liquid filter screens, water resources are saved, the reciprocating screw rod is rotated to drive the cleaning frame to clean the surfaces of the two gas filter screens in time, and the filter holes are prevented from being blocked. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a front view of the structure of the utility model;

[0014] Figure 2 It is a top view of the structure of the utility model;

[0015] Figure 3 It is a side view of the screening box 1 of the utility model;

[0016] Figure 4Part structure A of the utility model is shown in the figure.

[0017] Figure 5 Part structure B of the utility model is shown in the figure.

[0018] In the figure: 1, screening box;2, dust removal box;3, vibrating screen;4, air blower;5, ventilation groove;6, partition;7, gas filter screen;8, dust outlet;9, reciprocating screw;10, cleaning frame;11, brush;12, water storage tank;13, liquid filter screen;14, spray head;15, water delivery pipe;16, feed hopper;17, supporting block;18, spring;19, vibrating motor;20, flow guide funnel;21, discharge pipe;22, air guide groove;23, horizontal plate;24, vertical plate;25, motor;26, limiting groove;27, short rod;28, long rod;29, drain pipe;30, air outlet pipe;31, three-way valve DETAILED DESCRIPTION

[0019] In order to make the person skilled in the art better understand the utility model scheme, the technical scheme in the embodiment of the utility model will be described clearly and completely in the embodiment of the utility model below, obviously, the described embodiment is only a part of the embodiment of the utility model, not all. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without creative labor should belong to the scope of protection of the utility model.

[0020] It should be noted that the terms "first", "second" and the like in the description and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the utility model described herein can be interchanged. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or equipment including a series of steps or units does not have to be limited to the clearly listed steps or units, but can include other steps or units not clearly listed or inherent to these processes, methods, products or equipment.

[0021] In the utility model, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "transverse", "longitudinal" and the like is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the utility model and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0022] And, in addition to the above-mentioned part of the term can be used to indicate the orientation or position relationship, for example, the term "upper" in some cases can also be used to indicate a certain dependent relationship or connection relationship. For those of ordinary skill in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances. In addition, the meaning of the term "a plurality of" should be two and more than two.

[0023] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings Figures 1-5 And combined with the embodiments of the present application.

[0024] A coal mine dust removal equipment, including screening box 1, dust removal box 2 and water storage tank 12, screening box 1 is screened for coal mine, because the opposite side wall of screening box 1 is provided with air blower 4 and ventilation slot 5 respectively, so that the dust generated in the screening process is blown by air blower 4 and blown to ventilation slot 5, through the air guide groove 22 fixedly arranged at the air outlet of ventilation slot 5, to the inside of dust removal box 2 for dust removal treatment, the water storage tank 12 can provide the water resources needed for water spray wet dust removal.

[0025] The inside of the screening box 1 is provided with a vibrating screen 3, the top wall of the screening box 1 is provided with a feed hopper 16, the inside wall of the screening box 1 is symmetrically provided with two groups of supporting blocks 17, the top wall of the two groups of supporting blocks 17 is fixedly provided with springs 18, the vibrating screen 3 is inclined, and the bottom wall thereof is fixedly connected with the springs 18, the bottom wall of the vibrating screen 3 is provided with a vibrating motor 19, the vibrating screen 3 is provided below with a flow guide hopper 20, and the inclined end of the vibrating screen 3 and the bottom end of the flow guide hopper 20 are provided with discharge pipes 21.

[0026] The coal mine enters into the inside of the screening box 1 from the feed hopper 16 and falls onto the vibrating screen 3, under the action of the vibrating motor 19 and the spring 18, the vibration screening is realized, and when the coal mine vibrates and throws upward, the dust accumulated between the coal mines is also conveniently blown by the air blower 4 to the ventilation slot 5. The screened coal mine and the coal mine not passing the screening flow to the discharge pipes 21 and the flow guide hopper 20 respectively, and the screened coal mine is discharged from the discharge pipe 21 at the bottom end of the flow guide hopper 20.

[0027] The bottom wall of the dust removal box 2 is provided with a partition plate 6, one side of the partition plate 6 close to the ventilation slot 5 is provided with two gas filter screens 7, the bottom end of the two gas filter screens 7 is provided with a dust discharge hopper 8, the dust discharge hopper 8 is embeddedly arranged on the bottom wall of the dust removal box 2, the air outlet of the air guide groove 22 is opposite to the two gas filter screens 7, and the two gas filter screens 7 are respectively an activated carbon filter layer and a ceramic filter layer.

[0028] The dust wind from the air guide groove 22 directly faces two gas filter nets 7, and the dust generated by the filtration is filtered by the double filtration of the activated carbon filter layer and the ceramic filter layer of the two gas filter nets 7, and part of the dust directly falls on the dust discharge hopper 8 below and is discharged, and part of the dust adheres to the surface of the gas filter net 7 and can be scraped off under the auxiliary action of the cleaning frame 10 and scraped off to the dust discharge hopper 8.

[0029] A reciprocating wire rod 9 is rotatably arranged between the two gas filter nets 7, horizontal plates 23 and vertical plates 24 are fixedly arranged at the gap between the two gas filter nets 7 and the side wall of the dust removal box 2, the bottom end of the reciprocating wire rod 9 is rotatably arranged on the top wall of the horizontal plate 23, the top end of the reciprocating wire rod 9 penetrates the top wall of the dust removal box 2 and is arranged on the output end of the motor 25, and a limiting groove 26 is arranged on the vertical plate 24.

[0030] The motor 25 is started to drive the reciprocating wire rod 9 to rotate, and since the cleaning frame 10 is slidably arranged on the outer wall of the reciprocating wire rod 9, the cleaning frame 10 moves on the threaded outer periphery of the reciprocating wire rod 9 in the direction of the limiting groove 26, repeatedly brushes the surface of the two gas filter nets 7, and brushes the dust adhering to the surface to the dust discharge hopper 8 below and discharges the dust.

[0031] The cleaning frame 10 is fixedly provided with bristles 11 on the side close to the two gas filter nets 7, and the cleaning frame 10 includes two short rods 27 and three long rods 28 connected to each other, the two short rods 27 are slidably arranged on the reciprocating wire rod 9 and the limiting groove 26 respectively, drive the long rods 28 to move up and down, and the three long rods 28 are fixedly provided with bristles 11 on the side close to the two gas filter nets 7, so that the two sides of each gas filter net 7 can be brushed and cleaned at the same time, and the cleaning efficiency is improved.

[0032] The other side of the partition plate 6 is provided with a spray head 14, and two liquid filter nets 13 are arranged below the spray head 14, the two liquid filter nets 13 are arranged between the partition plate 6 and the side wall of the dust removal box 2, and the two liquid filter nets 13 are respectively a glass fiber filter layer and a polypropylene filter layer, a drain pipe 29 is arranged at the bottom of the liquid filter net 13, and a gas outlet pipe 30 is arranged on the side wall of the dust removal box 2 beside the spray head 14.

[0033] After the gas passes through the two gas filter nets 7, most of the dust is filtered out, at this time, the spray head 14 sprays the gas to remove dust, which can wet the dust that has not been completely filtered, and the dust and water mist fall into the two liquid filter nets 13 below to be filtered by water, and the filtered gas is discharged from the gas outlet pipe 30 into the air.

[0034] The spray head 14 is connected with the bottom of the dust removal tank 2 and the water storage tank 12 through the water delivery pipe 15, the water delivery pipe 15 is internally provided with a three-way valve 31, one end of the three-way valve 31 penetrates through the side wall of the dust removal tank 2 and is arranged below the liquid filter screen 13, and the other two ends are respectively connected with a plurality of spray heads 14 and the water storage tank 12. The water required by the spray head 14 can be obtained from the water storage tank 12 or the bottom of the dust removal tank 2 after being filtered by the two liquid filter screens 13 by controlling the three-way valve 31, so that the water resources are recycled and the waste of water resources is reduced.

[0035] The preferred embodiments of the utility model are described above only, and are not used for limiting the utility model, for the technical personnel in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A dust removal device for coal mines, comprising a screening box (1), a dust collection box (2), and a water storage tank (12), characterized in that: The screening box (1) is equipped with a vibrating screen (3). The side walls of the screening box (1) are respectively equipped with a blower (4) and a ventilation duct (5). The bottom wall of the dust collector (2) is equipped with a partition (6). Two gas filters (7) are installed on the side of the partition (6) near the ventilation duct (5). A dust hopper (8) is installed at the bottom of the two gas filters (7). A reciprocating screw (9) is rotatably installed between the two gas filters (7). A cleaning rack (10) is slidably installed on the outer wall of the reciprocating screw (9). A brush (11) is fixedly installed on the side of the cleaning rack (10) that is close to the two gas filters (7). A nozzle (14) is installed on the top of the other side of the partition (6). Two liquid filters (13) are installed below the nozzle (14). The nozzle (14) is connected to the bottom of the dust collector (2) and the water storage tank (12) through a water supply pipe (15).

2. The dust removal equipment for coal mines according to claim 1, characterized in that: The top wall of the screening box (1) is provided with a feeding hopper (16), and the inner side wall of the screening box (1) is symmetrically provided with two sets of support blocks (17). The top walls of the two sets of support blocks (17) are fixedly provided with springs (18). The vibrating screen (3) is inclined and its bottom wall is fixedly connected to the springs (18). The bottom wall of the vibrating screen (3) is provided with a vibrating motor (19). The bottom of the vibrating screen (3) is provided with a guide funnel (20). The inclined end of the vibrating screen (3) and the bottom end of the guide funnel (20) are both provided with discharge pipes (21).

3. A dust removal device for coal mines according to claim 2, characterized in that: A guide trough (22) is fixedly installed at the air outlet of the ventilation trough (5). The air outlet of the guide trough (22) is directly opposite to two gas filters (7). The two gas filters (7) are activated carbon filter layer and ceramic filter layer, respectively. A horizontal plate (23) and a vertical plate (24) are fixedly installed in the gap between the two gas filters (7) and on the side wall of the dust collection box (2). The bottom end of the reciprocating screw (9) is rotatably installed on the top wall of the horizontal plate (23). The top end of the reciprocating screw (9) passes through the top wall of the dust collection box (2) and is installed at the output end of the motor (25). A limit groove (26) is provided on the vertical plate (24). The cleaning rack (10) can move on the limit groove (26).

4. A dust removal device for coal mines according to claim 3, characterized in that: The cleaning rack (10) includes two short rods (27) and three long rods (28) connected to each other. The two short rods (27) are slidably mounted on the reciprocating screw (9) and the limiting groove (26) respectively. The three long rods (28) are all fixedly equipped with bristles (11) on the side near the two gas filters (7). The dust hopper (8) is fitted into the bottom wall of the dust collection box (2).

5. A dust removal device for coal mines according to claim 4, characterized in that: Two liquid filters (13) are set between the partition (6) and the side wall of the dust collection box (2), and they are respectively a glass fiber filter layer and a polypropylene filter layer. A drain pipe (29) is provided at the bottom of the liquid filter (13), and an air outlet pipe (30) is provided on the side wall of the dust collection box (2) next to the nozzle (14).

6. A dust removal device for coal mines according to claim 5, characterized in that: The water supply pipe (15) is equipped with a three-way valve (31), one end of which passes through the side wall of the dust collector (2) and is located below the liquid filter screen (13), and the other two ends are connected to several nozzles (14) and the water storage tank (12) respectively.

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