Dust removal device for coal mine safety

Abstract

The utility model provides a dust removal device for coal mine safety. The dust removal device comprises a bracket; a first cyclone separator; a dust collection box; a secondary separator; by arranging a combined structure of the first cyclone separator and the multi-stage second-stage cyclone separator, the device can effectively perform grading separation of large particles and small particles. After airflow containing dust enters the first cyclone separator, large-particle dust is separated out under the action of centrifugal force and falls into the dust collection box, and small-particle dust continues to be separated and settled after being centrifuged for multiple times through the second-stage cyclone separator. And finally, the airflow is filtered by a high-efficiency filter material in the filter cartridge, and residual fine particles are further removed, so that high-efficiency capture of dust with various particle sizes is realized. And the dust removal efficiency is remarkably improved through a multi-stage separation structure, and the air purification requirement of the coal mine high-concentration dust environment is met.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal devices, in particular to a dust removal device for coal mine safety. Background Art

[0002] Coal mining generates large amounts of dust, especially during coal mining, tunneling, and transportation. Dust concentrations in mine air often reach high levels. Coal dust not only wears and clogs equipment, impacting its proper operation, but also poses a serious health threat to mine workers. Long-term inhalation of dust can easily lead to respiratory illnesses such as pneumoconiosis. Furthermore, under certain conditions, coal dust can form explosive dust, increasing the risk of underground operations. Therefore, effectively removing dust from mines and ensuring air quality meets standards is a crucial issue in coal mine safety.

[0003] Currently, commonly used dust removal methods mainly include wet dust removal, dry dust removal, and electrostatic dust removal. Wet dust removal uses spray water mist to absorb dust and separate it from the air, but this method increases the humidity in the mine, which may lead to slippery ground and cause safety hazards to equipment and personnel. Dry dust removal is mainly based on cyclone separation and filtration. The cyclone separator uses the centrifugal force of the airflow to separate larger particles of dust, while the filtration equipment uses filter materials to block fine particles in the air. However, traditional dry dust removal devices usually only have a first-stage separation device, which can easily lead to the inability to completely remove fine particles of dust. The equipment is prone to clogging and requires frequent maintenance, which affects the dust removal effect and the life of the device. Utility Model Content

[0004] In response to the above-mentioned technical deficiencies, the purpose of this utility model is to provide a dust removal device for coal mine safety, which can not only effectively remove large particles of dust, but also further capture fine particles, thereby improving the air quality in the mine and ensuring the safety of equipment and personnel.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A dust removal device for coal mine safety, comprising:

[0007] a bracket configured with a plurality of support legs;

[0008] A first cyclone separator is fixed to the bracket; a separation chamber is provided inside the first cyclone separator, a first air inlet pipe is provided on the side, a first air outlet pipe is provided on the top, and a first sewage outlet is provided on the bottom; the axis of the first air inlet pipe does not intersect the axis of the first cyclone separator; the lower end of the first air outlet pipe extends into the interior of the separation chamber, and the lower end surface is located below the first air inlet pipe;

[0009] A dust collecting box is installed at the bottom of the cyclone separator and connected to the first sewage outlet;

[0010] The secondary separator is fixed on the top of the cyclone separator and is equipped with a filter cartridge, a second air inlet pipe, a second air outlet pipe and a second cyclone separator; the second air inlet pipe is connected to the first air outlet pipe; the filter cartridge is fixed on the second air inlet pipe; the second air outlet pipe is connected to the filter cartridge; the second cyclone separator is connected to the second air inlet pipe and the filter cartridge.

[0011] Preferably, a plurality of the second cyclone separators are configured; the plurality of the second cyclone separators are distributed in a circular array with the axis of the second air inlet pipe as the center.

[0012] Preferably, the secondary separator further comprises a dust collecting cylinder; the dust collecting cylinder is fixed on the top of the first cyclone separator; the second air inlet pipe is arranged through the dust collecting cylinder; the second cyclone separator is fixed on the upper part of the dust collecting cylinder and is connected to the second cyclone separator.

[0013] Preferably, the second cyclone separator includes a cylinder, a third air inlet pipe and a third air outlet pipe; the bottom of the cylinder is connected to the dust collecting cylinder; one end of the third air inlet pipe is installed on the side of the cylinder and is connected to the cylinder, and the other end is connected to the second air inlet pipe; the axis of the third air inlet pipe does not intersect with the axis of the second air inlet pipe; the lower end of the third air outlet pipe extends to the interior of the cylinder, and the lower end surface is located below the third air inlet pipe.

[0014] Preferably, the interior of the filter cartridge is filled with filter material.

[0015] Preferably, a discharge gate is provided at the bottom of the dust collecting box.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] This device, by providing a combined structure of a first cyclone separator and a multi-stage secondary cyclone separator, can effectively separate large and small particles into grades. After the dust-laden airflow enters the first cyclone separator, the large dust particles are separated by centrifugal force and fall into the dust collection box, while the small dust particles continue to be separated and settled after multiple centrifugal actions in the secondary cyclone separator. Finally, the airflow is filtered through the high-efficiency filter material in the filter cartridge to further remove the remaining fine particles, thereby achieving efficient capture of dust of various particle sizes. The multi-stage separation structure significantly improves the dust removal efficiency and meets the air purification needs of the high-concentration dust environment in coal mines.

[0018] Traditional single-stage dust collectors are prone to clogging and dust accumulation in high-concentration dust environments, resulting in reduced dust removal efficiency and requiring frequent maintenance. This device, however, utilizes a multi-stage cyclone separation mechanism, enabling each stage of separation equipment to process dust of varying particle sizes sequentially. This reduces the burden on each stage, slows filter cartridge clogging, and reduces maintenance frequency. Furthermore, the design of the discharge gate facilitates dust box cleaning, further reducing equipment downtime and the difficulty of manual cleaning, thereby improving work efficiency.

[0019] This device effectively reduces dust concentration in the mine air through efficient dust removal, reducing the risk of respiratory illnesses among workers from long-term dust inhalation. This lower dust concentration also reduces the risk of explosions from combustible dust in the coal mine environment, significantly improving overall mine safety. Furthermore, improved air quality helps extend the life of equipment, prevents dust-induced wear on mine machinery, and ensures smooth production operations.

[0020] This device features a compact structure and easy installation, making it suitable for installation in the confined spaces of underground coal mines. The multi-leg structure of the bracket ensures stable operation even on uneven mine floors. Furthermore, the device is easy to operate, and regular cleaning of the dust collection box maintains effective dust removal, eliminating the need for specialized maintenance personnel. The convenient discharge gate design allows operators to quickly clean the dust collection box, significantly simplifying routine dust collector maintenance.

[0021] This device utilizes physical separation and mechanical filtration, eliminating the need for additional water sources or the use of power-intensive electrostatic dust removal devices. This reduces the energy reliance of coal mine dust removal equipment and meets the requirements of low-energy, environmentally friendly production. While maintaining efficient dust removal, the device does not increase mine humidity, avoiding equipment corrosion and potential safety hazards associated with wet dust removal methods, providing technical support for green and safe coal mine production. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of the utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0024] Figure 3 for Figure 2 A partial enlarged view of point A in the middle.

[0025] in:

[0026] 1. Second air outlet pipe; 2. Filter cartridge; 3. Second cyclone separator; 4. Dust collecting cylinder; 5. First sewage outlet; 6. Dust collecting box; 7. Bracket; 8. First cyclone separator; 9. First air inlet pipe; 10. Second air inlet pipe; 11. First air outlet pipe; 12. Third air outlet pipe; 13. Cylinder body; 14. Third air inlet pipe. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] like Figures 1 to 3 As shown, a dust removal device for coal mine safety includes:

[0029] Bracket 7, equipped with multiple support legs, provides stable structural support for the entire device. These legs, distributed across the bottom of the device, ensure the device resists tilting or sliding during use, maintaining excellent stability even in the complex, humid ground conditions of coal mines. Furthermore, the legs can be adjusted to the required height to accommodate installation requirements in various work environments.

[0030] The first cyclone separator 8 is fixed on the bracket 7. A separation chamber is provided inside the first cyclone separator 8, a first air inlet pipe 9 is provided on the side, a first air outlet pipe 11 is provided on the top, and a first sewage outlet 5 is provided at the bottom. The axis of the first air inlet pipe 9 does not intersect with the axis of the first cyclone separator 8. The lower end of the first air outlet pipe 11 extends into the interior of the separation chamber, and the lower end face is located below the first air inlet pipe 9. The structural design of the first cyclone separator 8 enables the dust-laden airflow to enter the separation chamber along a rotating path, and the centrifugal force generated by the rotation throws large dust particles in the airflow toward the wall of the separation chamber, thereby achieving preliminary dust separation. The separated dust particles fall to the first sewage outlet 5 at the bottom under the action of gravity. Since the lower end face of the first air outlet pipe 11 is located below the air inlet, it can effectively reduce the turbulence of the airflow in the separation chamber, ensuring that the airflow flows smoothly and further enters the secondary separator for processing.

[0031] The dust box 6 is installed at the bottom of the cyclone separator and connected to the first sewage outlet 5. The dust box 6 is used to collect larger dust particles separated by the first cyclone separator 8. The volume of the dust box 6 is designed according to the dust concentration and operating hours of the coal mine to ensure that frequent cleaning is not required under continuous operation. In addition, the sealing structure of the dust box 6 prevents dust from leaking out to protect the surrounding air environment from pollution. The discharge gate at the bottom is used to facilitate the discharge and cleaning of dust box 6 when a large amount of dust accumulates, avoiding the device from affecting the separation effect due to excessive dust accumulation.

[0032] The secondary separator is fixed on the top of the cyclone separator and is equipped with a filter cartridge 2, a second air inlet pipe 10, a second air outlet pipe 1 and a second cyclone separator 3; the second air inlet pipe 10 is connected to the first air outlet pipe 11; the filter cartridge 2 is fixed on the second air inlet pipe 10; the second air outlet pipe 1 is connected to the filter cartridge 2; the second cyclone separator 3 is connected to the second air inlet pipe 10 and the filter cartridge 2. The secondary separator achieves secondary separation of small dust particles through a finer filtering structure. The airflow through the first air outlet pipe 11 enters the secondary separator, and the filter cartridge 2 further physically intercepts the tiny dust in the airflow, ensuring that the cleanliness of the airflow entering the second air outlet pipe 1 is greatly improved. The multi-stage separation structure can prevent the filter cartridge 2 from quickly clogging, reduce the number of cleaning and maintenance times, and extend the service life of the device.

[0033] In this embodiment, multiple second cyclone separators 3 are configured; these are arranged in a circular array around the axis of the second air inlet duct 10. This array layout design allows the airflow to be evenly dispersed into each second cyclone separator 3 after entering the second air inlet duct 10, improving airflow separation efficiency. The centrifugal force generated within each second cyclone separator 3 further separates small dust particles, ensuring that the airflow receives multiple treatments during the secondary separation stage and reducing residual dust.

[0034] In this embodiment, the secondary separator further includes a dust collection canister 4, which is fixed to the top of the first cyclone separator 8. A second air inlet pipe 10 extends through the dust collection canister 4. The second cyclone separator 3 is fixed to the upper portion of the dust collection canister 4 and communicates with the second cyclone separator 3. The dust collection canister 4 is designed to collect the fine dust particles separated by the second cyclone separator 3. This dust settles to the bottom of the dust collection canister 4 by gravity, thus preventing the dust from re-entering the air circulation and further improving the air purification efficiency.

[0035] In this embodiment, the second cyclone separator 3 includes a barrel 13, a third air inlet pipe 14, and a third air outlet pipe 12. The bottom of the barrel 13 is connected to the dust collection barrel 4. One end of the third air inlet pipe 14 is mounted on the side of the barrel 13 and connected to the barrel 13, and the other end is connected to the second air inlet pipe 10. The axis of the third air inlet pipe 14 does not intersect with the axis of the second air inlet pipe 10. The lower end of the third air outlet pipe 12 extends into the interior of the barrel 13, with the lower end surface located below the third air inlet pipe 14. This design further optimizes the airflow path. The airflow remains in a rotating state when entering the third air inlet pipe 14, generating a stable centrifugal force, allowing finer dust particles to be fully separated.

[0036] In this embodiment, the interior of the filter cartridge 2 is filled with filter material. The type of filter material can be selected based on the characteristics of dust particles in the coal mine working environment. For example, high-efficiency fiber filter material can effectively intercept even smaller dust particles, ensuring that the airflow discharged from the filter cartridge 2 meets coal mine safety standards. In addition, the filter material can be replaced regularly to extend the service life of the filter cartridge 2 and ensure the filtering effect of the device.

[0037] In this embodiment, a discharge gate is provided at the bottom of the dust box 6. The gate is designed to be controllable and can be opened and closed. When dust accumulates to a certain amount inside the dust box 6, the gate can be opened to discharge the dust, achieving efficient cleaning. By providing a discharge gate, operators can complete dust removal operations quickly while ensuring safety and reducing maintenance frequency.

[0038] How it works

[0039] This device achieves efficient removal of coal mine dust through a combination of multi-stage cyclone separation and cartridge 2 filtration. The entire dust removal process includes the following steps:

[0040] The dust-laden airflow first enters the first cyclone separator 8 through the first air inlet duct 9. Because the axis of the first air inlet duct 9 does not intersect with the axis of the first cyclone separator 8, the airflow, upon entering the separation chamber, rotates at high speed along the inner wall of the separator, generating a strong centrifugal force. During this process, large dust particles are flung toward the inner wall of the separation chamber by the centrifugal force, where they gradually sink under the influence of gravity, ultimately entering the dust collection box 6 through the first drain port 5 at the bottom. After this initial separation, smaller dust particles in the airflow continue to flow upward with the airflow.

[0041] After initial dust removal, the airflow passes from the first outlet duct 11 of the first cyclone separator 8 into the second inlet duct 10 of the secondary separator. This second inlet duct 10 extends through the dust collection barrel 4, dispersing the airflow within the secondary separator's multiple second cyclones 3. These multiple second cyclones 3 are arranged in a circular array centered around the axis of the second inlet duct 10. Each second cyclone separator 3 generates a powerful swirling airflow, further centrifugally separating the fine dust particles in the airflow. This centrifugal action causes the fine dust particles to concentrate on the walls of the cyclones, where they settle into the dust collection barrel 4 under the influence of gravity.

[0042] In this device, each second cyclone separator 3 is also equipped with a third air inlet duct 14 and a third air outlet duct 12. This structure further accelerates the airflow. After the airflow enters the third air inlet duct 14 and then into the cylinder 13, small dust particles are further flung toward the inner wall of the cylinder 13 during the third cyclonic separation process and settle to the bottom of the dust collection barrel 4 due to gravity. This multi-stage cyclonic separation structure effectively captures even fine dust, greatly improving dust separation efficiency.

[0043] After the multi-stage cyclonic separation, the remaining fine dust particles in the airflow are significantly reduced. Next, the airflow passes through filter cartridge 2 for final filtration. Filter cartridge 2 is filled with high-efficiency filter material, which blocks and adsorbs the fine dust in the airflow, removing the remaining micron-sized particles and ensuring the cleanliness of the exhaust airflow. Finally, the clean airflow is discharged through the second outlet pipe 1, achieving an air purification effect in the coal mine environment.

[0044] Throughout the dust removal process, the separated dust settles sequentially into the dust box 6 and the dust collection barrel 4. A discharge gate is located at the bottom of the dust box 6, allowing the operator to regularly clean the dust and ensure the normal operation of the equipment. This convenient gate structure allows for rapid and dust-free discharge, reducing the operator's exposure to dust.

[0045] How to use

[0046] The device is stably installed in the coal mine workplace, and each support leg of the bracket 7 is firmly grounded to ensure the stability of the entire device. The installation position should be as close to the dust source as possible to maximize the capture of dust in the air.

[0047] Connect the air inlet system of the device to allow the dust-laden airflow to enter the device from the first air inlet pipe 9, and start the cyclone separation and filtration functions of the filter cartridge 2. Ensure that there is no leakage during normal operation of the equipment, and that the connections between the separators at all levels and the filter cartridge 2 are well sealed.

[0048] To ensure the dust removal effect, regularly check the dust storage in the dust box 6 and the dust collection barrel 4. When the dust accumulates more, open the discharge gate at the bottom of the dust box 6 to perform dust cleaning operations. During the cleaning process, wear a dust mask to avoid secondary dust pollution.

[0049] After long-term use, the filter material of filter cartridge 2 will gradually accumulate dust, affecting the filtration effect. It is recommended to inspect and clean filter cartridge 2 at regular intervals. Dust can be removed by reverse blowing, etc., and the filter material can be replaced when necessary to maintain good filtration effect.

[0050] Regularly check the cyclone separator, air inlet pipe, air outlet pipe and other key components to ensure that they are not loose, blocked or worn. At the same time, check the stability of the bracket 7 to prevent the equipment from tilting or vibrating to ensure long-term stable operation.

Claims

1. A dust removal device for coal mine safety, characterized in that: include: a bracket (7) configured with a plurality of supporting legs; A first cyclone separator (8) is fixed on the bracket (7); a separation chamber is provided inside the first cyclone separator (8), a first air inlet pipe (9) is provided on the side, a first air outlet pipe (11) is provided on the top, and a first sewage outlet (5) is provided on the bottom; the axis of the first air inlet pipe (9) and the axis of the first cyclone separator (8) do not intersect; the lower end of the first air outlet pipe (11) extends into the interior of the separation chamber, and the lower end surface is located below the first air inlet pipe (9); A dust collecting box (6) is installed at the bottom of the cyclone separator and connected to the first sewage outlet (5); The secondary separator is fixed on the top of the cyclone separator and is equipped with a filter cartridge (2), a second air inlet pipe (10), a second air outlet pipe (1) and a second cyclone separator (3); the second air inlet pipe (10) is connected to the first air outlet pipe (11); the filter cartridge (2) is fixed on the second air inlet pipe (10); the second air outlet pipe (1) is connected to the filter cartridge (2); and the second cyclone separator (3) is connected to the second air inlet pipe (10) and the filter cartridge (2).

2. The dust removal device for coal mine safety according to claim 1, characterized in that: The second cyclone separators (3) are configured in plurality; the plurality of second cyclone separators (3) are distributed in a circular array with the axis of the second air inlet pipe (10) as the center.

3. The dust removal device for coal mine safety according to claim 1, characterized in that: The secondary separator further comprises a dust collecting barrel (4); the dust collecting barrel (4) is fixed on the top of the first cyclone separator (8); the second air inlet pipe (10) is arranged to pass through the dust collecting barrel (4); the second cyclone separator (3) is fixed on the upper part of the dust collecting barrel (4) and is in communication with the dust collecting barrel (4).

4. The dust removal device for coal mine safety according to claim 3, characterized in that: The second cyclone separator (3) comprises a cylinder (13), a third air inlet pipe (14) and a third air outlet pipe (12); the bottom of the cylinder (13) is connected to the dust collecting cylinder (4); one end of the third air inlet pipe (14) is installed on the side of the cylinder (13) and is connected to the cylinder (13), and the other end is connected to the second air inlet pipe (10); the axis of the third air inlet pipe (14) does not intersect with the axis of the second air inlet pipe (10); the lower end of the third air outlet pipe (12) extends to the interior of the cylinder (13), and the lower end surface is located below the third air inlet pipe (14).

5. The dust removal device for coal mine safety according to any one of claims 1 to 4, characterized in that: The interior of the filter cartridge (2) is filled with filter material.

6. The dust removal device for coal mine safety according to claim 1, characterized in that: A discharge gate is provided at the bottom of the dust collecting box (6).

Images