Novel airflow purification device for underground coal mine
A novel airflow purification device, designed with a carrier, purification unit, control mechanism, and filtration mechanism in underground coal mines, utilizes a microwave sensor to control the pump, solving the problems of water waste and personnel getting wet, and achieving efficient water resource utilization and safe air purification.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIAOZUO COAL IND GRP XINXIANG ENERGY LTD
- Filing Date
- 2025-03-11
- Publication Date
- 2026-05-19
AI Technical Summary
Existing underground water purification devices in coal mines suffer from water waste and personnel getting wet during use, and fail to effectively control spray when personnel pass through.
A novel airflow purification device was designed, comprising a carrier, a purification body, a control mechanism, and a filtration mechanism. The device utilizes a microwave sensor and a controller to control the pump's opening and closing, atomizes water mist through the nozzles, and recovers wastewater through the filtration mechanism. This ensures that the spraying stops promptly when people pass by, reducing water waste.
This technology enables timely stopping of spraying when personnel pass through, reducing water waste, improving water utilization, and ensuring personnel safety and normal equipment operation.
Smart Images

Figure CN224260385U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of purification devices, specifically to a novel airflow purification device for underground coal mines. Background Technology
[0002] Dust is a serious problem in coal mining operations. These fine particles not only affect air quality but also threaten the health of miners, with long-term exposure potentially leading to serious occupational diseases. Furthermore, high concentrations of dust increase the risk of explosions, posing a significant safety hazard to coal mine production. In addition, dust accumulates on equipment surfaces, affecting heat dissipation and normal operation, increasing the incidence of equipment failures, and shortening equipment lifespan.
[0003] To prevent the above problems, coal mine water purification devices have emerged. Through a series of advanced technologies and ingenious designs, they effectively capture and remove dust particles from the air. When dust-laden airflow passes through the device, water curtain nozzles spray a fine mist that collides and combines with the dust particles, causing them to become heavier and settle. Simultaneously, the internal filter layer further intercepts tiny particles, ensuring a cleaner, purified airflow.
[0004] However, in existing technologies, coal mine water purification devices generally simply turn water into mist and then adsorb dust particles without considering specific usage scenarios. If the spraying continues, people will get wet when they pass by, and continuous spraying also wastes water resources to some extent. Utility Model Content
[0005] The purpose of this utility model is to provide a new type of airflow purification device for underground coal mines in order to solve the above-mentioned problems.
[0006] To achieve the above objectives, the present invention provides the following technical solution:
[0007] A novel airflow purification device for underground coal mines includes a carrier, a purification body, a control mechanism, and a filtration mechanism. The purification body is fixedly connected to the carrier. The carrier includes an outer frame and an inner frame. The purification body is fixedly connected to the outer frame, and the inner frame has a door panel structure. The purification body includes a water inlet pipe and several nozzles. The water inlet pipe is fixedly connected to the outer frame and has several water outlets. The nozzles are fixedly connected to the water outlets of the water inlet pipe. The purification body also includes a controller and a pump body. The pump body is fixedly connected to the water inlet pipe, and the controller is electrically connected to the pump body. The controller is fixedly connected to the inner frame, and when the inner frame is open, the controller controls the pump body to close.
[0008] The filtration mechanism is located directly below the nozzle. The filtration mechanism includes several filter plates and a drainage trough. The drainage trough is fixedly connected to the ground of the tunnel, and the filter plates are fixedly connected to the drainage trough.
[0009] Furthermore, the control mechanism includes a connecting rod and a microwave sensor. The connecting rod is fixedly connected to the outer frame, and the microwave sensor is fixedly connected to the end of the connecting rod away from the outer frame. The microwave sensor is electrically connected to the pump body.
[0010] Furthermore, there are two control mechanisms, which are respectively located on both sides of the outer frame.
[0011] Furthermore, the top surface of the drainage trough is not higher than the ground of the tunnel, the filter plates are arranged sequentially from top to bottom, and the filtration gap of the filter plates decreases sequentially from top to bottom.
[0012] Furthermore, the topmost filter plate is curved.
[0013] Furthermore, it also includes two water baffles, which are fixedly connected to the nozzle and are parallel to each other.
[0014] The beneficial effects are as follows: The principle of this invention is to atomize water into fine droplets, which collide and combine with dust particles in the air. The surface tension of the droplets causes the dust particles to be adsorbed onto their surface, thereby increasing the weight of the dust and causing it to settle under gravity. Furthermore, this invention is specially equipped with a control mechanism and a filtration mechanism. The control mechanism can improve the actual use effect of this invention, and the filtration mechanism can recycle wastewater, improving the utilization rate of water resources. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 This is a left-side structural view of the present invention;
[0018] Figure 3 This is a top view of the filter mechanism of this utility model;
[0019] Figure 4 This is a diagram of the water baffle fixing structure of this utility model;
[0020] Figure 5 This is a schematic diagram of the pump's operating status control.
[0021] The reference numerals in the attached drawings are explained as follows: 11, outer frame; 12, inner frame; 21, water inlet pipe; 22, several nozzles; 23, controller; 24, pump body; 31, filter plate; 32, drainage trough; 41, connecting rod; 42, microwave sensor; 51, baffle plate. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0023] See Figures 1-4 As shown, this utility model provides a novel airflow purification device for underground coal mines, including a carrier, a purification body, a control mechanism, and a filtration mechanism. The purification body is fixedly connected to the carrier. The carrier includes an outer frame 11 and an inner frame 12. The purification body is fixedly connected to the outer frame 11, and the inner frame 12 is a door panel structure. The outer frame 11 is used to support and install the overall structure, and the inner frame 12 serves as a doorway for personnel to pass through.
[0024] In this embodiment, water is used as an air purifier to adsorb impurities in the air. The purification body includes a water inlet pipe 21 and several nozzles 22. Water flows through the water inlet pipe 21 into the nozzles 22 and then sprays a mist of gas into the air to adsorb particulate impurities in the air. To improve stability, the water inlet pipe 21 is fixedly connected to the outer frame 11. To increase the coverage area of the spray, the water inlet pipe 21 has multiple water outlets, and the nozzles 22 are fixedly connected to the water outlets of the water inlet pipe 21. In this embodiment, the nozzles 22 are atomizing nozzles.
[0025] In this embodiment, for ease of use, the purification unit also includes a controller 23 and a pump body 24. The pump body 24 is fixedly connected to the water inlet pipe 21, and the controller 23 is electrically connected to the pump body 24. The controller 23 is fixedly connected to the inner frame 12. When the inner frame 12 is opened, the controller 23 controls the pump body 24 to close. The main function is to close the pump body 24 when a person passes through the inner frame 12 to prevent water mist from spraying onto the person. To improve stability, the controller 23 in this embodiment is a push-button switch, installed on the handle of the inner frame 12. When a person holds the handle, the switch is activated, and the pump body 24 is closed. In other embodiments, the controller 23 can also be an infrared switch sensor or a microwave sensor, etc., to control the closure of the pump body 24 through the sensor, thereby improving automation.
[0026] In this embodiment, a filtration mechanism is provided to recover water flow. The filtration mechanism is located directly below the nozzle 22. The filtration mechanism includes several filter plates 31 and a drainage trough 32. The drainage trough 32 is fixedly connected to the ground of the tunnel, and the filter plates 31 are fixedly connected to the drainage trough 31. After the water mist is sprayed, it gathers in the filtration mechanism below for filtration and collection, which can save water resources and prevent the tunnel from becoming slippery and muddy.
[0027] In this embodiment, to further improve the usability, a control mechanism is provided. The control mechanism includes a connecting rod 41 and a microwave sensor 42. The connecting rod 41 is fixedly connected to the outer frame 11, and the microwave sensor 42 is fixedly connected to the end of the connecting rod 41 away from the outer frame 11. Figure 2 (At end A in the diagram), the microwave sensor 42 is electrically connected to the pump body 24. Before a person approaches the device, the microwave sensor 42 senses the arrival of the person and controls the pump body 24 to reduce the pumping speed of the pump body 24, thereby reducing the amount of water mist sprayed. This prevents the water mist from not stopping in time when the person passes through the inner frame 12 and getting wet. (If this mechanism is not set, when the person passes through the inner frame 12, although the pump body 24 will be turned off, there will still be too much water remaining in the water inlet pipe 21 and the nozzle 22, which will continue to fall for a period of time, causing the person to get wet.) Furthermore, before the person reaches the inner frame 12, there is still a small amount of water mist that plays an adsorption role, reducing the impact of not being able to adsorb particulate matter when the spray stops.
[0028] To further improve usability, there are two control mechanisms, respectively located on both sides of the outer frame 11. When a person enters from one side ( Figure 2 When a person enters from end A, the microwave sensor at end A detects that a person is about to pass through, reduces the pumping power of pump body 24, thereby reducing the spray rate. Spraying stops when the person passes through inner frame 12, and continues until the person passes through the other side (…). Figure 2 When the control mechanism of the B end is activated, the microwave sensor at the B end controls the pump body 24 to turn on, and then the spray is turned on again.
[0029] In this embodiment, the top surface of the drainage trough 32 is not higher than the ground of the tunnel, the filter plates 31 are arranged sequentially from top to bottom, and the filtration gap of the filter plates 31 decreases sequentially from top to bottom, so as to achieve the effect of step-by-step wastewater recycling.
[0030] In this embodiment, in order to improve the wastewater recycling effect, the uppermost filter plate 31 is arc-shaped to prevent wastewater from flowing into the passage from both sides of the uppermost filter plate 31.
[0031] In this embodiment, two baffle plates 51 are also included. The baffle plates 51 are fixedly connected to the nozzle 22 and the two baffle plates 51 are parallel to each other. The baffle plates 51 can prevent the water mist spray area from being too large, thereby concentrating the water mist spray area and improving the adsorption effect.
[0032] like Figure 5 As shown, the pump body 24 is controlled by three sensors or switches to maintain its operating state. The pump body 24 is normally in the on state. When a person approaches the device, the microwave sensor at end A senses the approach and controls the pump body 24 to reduce its power, thereby reducing the spray rate. When the person switches the inner frame 12 or holds the handle of the inner frame 12, the controller 23 on the inner frame 12 (which can be a physical switch or a sensor) controls the pump body 24 to turn off and stop spraying. When the person moves away from the device, the microwave sensor at end B senses the movement of the person and turns the pump body 24 back on to continue spraying.
[0033] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A novel airflow purification device for underground coal mines, characterized in that: It includes a carrier, a purification body, a control mechanism, and a filtration mechanism. The purification body is fixedly connected to the carrier. The carrier includes an outer frame and an inner frame. The purification body is fixedly connected to the outer frame, and the inner frame is a door panel structure. The purification unit includes a water inlet pipe and several nozzles. The water inlet pipe is fixedly connected to the outer frame. The water inlet pipe has several water outlets, and the nozzles are fixedly connected to the water outlets of the water inlet pipe. The purification unit also includes a controller and a pump body. The pump body is fixedly connected to the water inlet pipe. The controller is electrically connected to the pump body and is fixedly connected to the inner frame. When the inner frame is opened, the controller controls the pump body to close. The filtration mechanism is located directly below the nozzle. The filtration mechanism includes several filter plates and a drainage trough. The drainage trough is fixedly connected to the ground, and the filter plates are fixedly connected to the drainage trough.
2. The novel underground airflow purification device for coal mines according to claim 1, characterized in that: The control mechanism includes a connecting rod and a microwave sensor. The connecting rod is fixedly connected to the outer frame, and the microwave sensor is fixedly connected to the end of the connecting rod away from the outer frame. The microwave sensor is electrically connected to the pump body.
3. The novel underground airflow purification device for coal mines according to claim 2, characterized in that: There are two control mechanisms, which are respectively located on both sides of the outer frame.
4. The novel underground airflow purification device for coal mines according to claim 3, characterized in that: The top surface of the drainage trough is not higher than the ground, and the filter plates are arranged in order from top to bottom, with the filtration gap between the filter plates decreasing from top to bottom.
5. The novel underground airflow purification device for coal mines according to claim 4, characterized in that: The topmost filter plate is curved.
6. The novel underground airflow purification device for coal mines according to claim 5, characterized in that: It also includes two water baffles, which are fixedly connected to the nozzle and are parallel to each other.