Coal mine ventilation system

Abstract

This utility model discloses a ventilation device for coal mine operations, relating to the field of mine ventilation technology. It includes a frame with two booster fans fixedly installed on its front. Two sliding grooves are provided on both the left and right sides inside the frame, and two filter screens are slidably installed inside the frame via these four grooves. It also includes a drive assembly comprising two lead screws, two sliding rods, and a power component. The two lead screws are rotatably installed inside the two sliding grooves on one side of the frame. The filter screens of this utility model effectively prevent impurities such as lint from adhering to the surface of the booster fan blades, thus affecting the ventilation effect. The drive assembly allows for the alternating use of the two filter screens, enabling the device to effectively maintain the filtration effect on lint and other impurities in the air. Simultaneously, a washing mechanism can wash the filter screen that has been replaced and moved to the lower position, washing off lint and other impurities adhering to the filter screen surface to ensure its cleanliness.

Description

Technical Field

[0001] This utility model relates to the field of mine ventilation technology, and in particular to ventilation devices for coal mine operations. Background Technology

[0002] There are devices on the market for increasing ventilation in mines. These devices can improve ventilation in mines by increasing wind speed and air volume, thereby improving mine safety and production efficiency. Most of these devices are fans or ventilation ducts. Fans are one of the most common ventilation devices. They generate airflow by rotating blades, sending fresh air into the mine and expelling stale air at the same time. Ventilation ducts can deliver fresh air to various parts of the mine and expel stale air at the same time.

[0003] A search revealed a patent with authorization announcement number CN215927445U, which discloses a mine ventilation booster device. By setting annular protrusions and grooves on opposite surfaces of the booster box, multiple booster boxes can be connected end to end to increase the air pressure inside the pipe and accelerate the air flow rate, while also facilitating the installation of ventilation pipes. By placing the booster box inside the base, the vibration force generated by the dual-head motor can be dissipated, avoiding damage to the motor and internal parts of the booster box, thus affecting their lifespan.

[0004] However, when the aforementioned patent increases ventilation in the mine, it uses a motor gear to drive a fan to accelerate the airflow inside the mine. When the fan is drawing air, the air contains impurities such as lint. These impurities are then adsorbed onto the surface of the fan blades. The adhesion of lint and other impurities to the fan blades reduces the fan's suction capacity, requiring the fan blades to be cleaned. This causes inconvenience to the air circulation inside the mine. Therefore, in order to solve the aforementioned problems, we propose a ventilation device for coal mine operations. Utility Model Content

[0005] The purpose of this utility model is to address the deficiencies in the existing technology by proposing a ventilation device for coal mine operations.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A ventilation device for coal mine operations includes a frame, with two booster fans fixedly installed on the front of the frame. Two sliding grooves are provided on both the left and right sides inside the frame, and two filter screens are slidably installed inside the frame through the four sliding grooves.

[0008] It also includes a drive assembly, which includes two lead screws, two slide rods, and a power assembly. The two lead screws are rotatably installed inside the two slide grooves on one side of the frame, and the two slide rods are fixedly installed inside the two slide grooves on the other side of the frame. One side of each of the two filter screens is threadedly connected to the corresponding lead screw, and the other side of each of the two filter screens is slidably connected to the corresponding slide rod. The power assembly is drivenly connected to the two lead screws.

[0009] A rinsing mechanism is fixedly installed on the lower back of the frame.

[0010] Furthermore, mounting plates are fixedly installed on both the left and right sides of the frame, and mounting holes are opened inside both mounting plates.

[0011] Furthermore, the power assembly includes a gearbox and a motor. The gearbox is fixedly installed on the top of the frame near the lead screw, and the motor is fixedly installed on the top of the gearbox. Both lead screws are connected to the gearbox for transmission, and the motor is connected to the two lead screws through the gearbox for transmission.

[0012] Furthermore, the two lead screws have the same specifications and rotate in opposite directions.

[0013] Furthermore, the rinsing mechanism includes a fixing frame and a rinsing pipe. The fixing frame is fixedly installed at the bottom of the rear side of the frame, and the rinsing pipe is fixedly installed inside the fixing frame. Multiple inclined nozzles are fixedly installed at equal intervals on the outer surface of the rinsing pipe, and the multiple nozzles are all inclined downward and facing the frame.

[0014] Furthermore, one end of the flushing pipe extends to one side of the fixing frame and is fixedly installed with a solenoid valve.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] The filter of this invention can effectively prevent impurities such as lint from entering the ventilation duct and also prevent them from adhering to the surface of the blower blades, thus affecting the ventilation effect. Furthermore, the two filters and drive assembly allow for alternating use of the two filters, enabling the device to effectively maintain the filtration effect on impurities such as lint in the air. The rinsing mechanism can also rinse the filter that has been replaced and moved to the bottom, washing off the lint and other impurities adhering to the filter surface and ensuring the cleanliness of the filter. Attached Figure Description

[0017] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0018] Figure 1 This is one of the perspective views of this utility model;

[0019] Figure 2 This is a second perspective view of the present utility model;

[0020] Figure 3 This is a perspective view of the filter screen of this utility model.

[0021] In the diagram: 1. Frame; 2. Fan; 3. Filter screen; 4. Gearbox; 5. Motor; 6. Lead screw; 7. Slide rod; 8. Flushing pipe; 9. Solenoid valve; 10. Slide groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model;

[0023] Reference Figure 1-3 A ventilation device for coal mine operations includes a frame 1. Two booster fans 2 are fixedly installed on the front of the frame 1. Two sliding grooves 10 are provided on the left and right sides inside the frame 1. Two filter screens 3 are slidably installed inside the frame 1 through four sliding grooves 10. Mounting plates are fixedly installed on the left and right sides of the frame 1. Mounting holes are opened inside the two mounting plates.

[0024] The ventilation device can be connected to one end of the ventilation duct in the mine through the mounting plate and mounting hole. By starting the booster fan 2, the air inside the mine can be circulated, which can accelerate the air flow and exchange between the inside and outside of the mine. The design of the filter screen 3 can effectively prevent impurities such as lint from entering the ventilation duct, and at the same time prevent impurities such as lint from adhering to the surface of the fan blades of the booster fan 2, thereby affecting the ventilation effect.

[0025] The system also includes a drive assembly, which comprises two lead screws 6, two slide rods 7, and a power assembly. The two lead screws 6 are rotatably mounted inside two slide grooves 10 on one side of the frame 1, and the two slide rods 7 are fixedly mounted inside two slide grooves 10 on the other side of the frame 1. One side of each of the two filter screens 3 is threadedly connected to the corresponding lead screw 6, and the other side of each filter screen 3 is slidably connected to the corresponding slide rod 7. The power assembly is driven by the two lead screws 6. The power assembly includes a gearbox 4 and a motor 5. The gearbox 4 is fixedly mounted on the top of the frame 1 near the lead screws 6, and the motor 5 is fixedly mounted on top of the gearbox 4. Both lead screws 6 are driven by the gearbox 4, and the motor 5 is driven by the two lead screws 6 through the gearbox 4. The two lead screws 6 are of the same specifications and rotate in opposite directions.

[0026] By using the two filters 3 and the drive assembly, the two filters 3 can be used alternately, enabling the device to effectively maintain the filtration effect on impurities such as lint in the air.

[0027] The motor 5 in the drive assembly can drive the two lead screws 6 to rotate through the gearbox 4. Under the action of the gearbox 4, the two lead screws 6 can rotate in opposite directions, thereby causing the two filter screens 3 to rise and fall respectively, realizing the alternating use of the filter screens 3.

[0028] The internal structure of the gearbox 4 can be designed according to actual needs, so as to drive the two lead screws 6 to rotate in opposite directions at the same speed.

[0029] A rinsing mechanism is fixedly installed on the lower back of frame 1. The rinsing mechanism includes a mounting bracket and a rinsing pipe 8. The mounting bracket is fixedly installed at the bottom rear side of the back of frame 1, and the rinsing pipe 8 is fixedly installed inside the mounting bracket. Multiple inclined nozzles are fixedly installed at equal intervals on the outer surface of the rinsing pipe 8, and the multiple nozzles are all inclined downward and facing frame 1. One end of the rinsing pipe 8 extends to one side of the mounting bracket and is fixedly installed with a solenoid valve 9.

[0030] The rinsing mechanism can rinse the filter screen 3 that has been replaced below, washing away lint and other impurities attached to the surface of the filter screen 3 to ensure the cleanliness of the filter screen 3.

[0031] The input end of the solenoid valve 9 can be connected to an external water pipe, through which clean water is delivered to the flushing pipe 8. The flushing pipe 8 uses nozzles mounted on its outer surface to flush the filter screen 3. The solenoid valve 9 can be used to control the water flow rate into the flushing pipe 8 and to start and stop the flushing function.

Claims

1. A ventilation device for coal mine operations, comprising a frame (1), characterized in that, Two booster fans (2) are fixedly installed on the front of the frame (1). Two sliding grooves (10) are provided on the left and right sides inside the frame (1). Two filter screens (3) are slidably installed inside the frame (1) through the four sliding grooves (10). It also includes a drive assembly, which includes two lead screws (6), two slide rods (7) and a power assembly. The two lead screws (6) are rotatably installed inside the two slide grooves (10) on one side of the frame (1), and the two slide rods (7) are fixedly installed inside the two slide grooves (10) on the other side of the frame (1). One side of each of the two filter screens (3) is threadedly connected to the corresponding lead screw (6), and the other side of each of the two filter screens (3) is slidably connected to the corresponding slide rod (7). The power assembly is drivenly connected to the two lead screws (6). A rinsing mechanism is fixedly installed on the lower back of the frame (1).

2. The coal mine ventilation device according to claim 1, characterized in that, Mounting plates are fixedly installed on both the left and right sides of the frame (1), and mounting holes are opened inside both mounting plates.

3. The coal mine ventilation device according to claim 1, characterized in that, The power assembly includes a gearbox (4) and a motor (5). The gearbox (4) is fixedly installed on the top of the frame (1) near the lead screw (6). The motor (5) is fixedly installed on the top of the gearbox (4). Both lead screws (6) are connected to the gearbox (4) for transmission. The motor (5) is connected to the two lead screws (6) through the gearbox (4).

4. The coal mine ventilation device according to claim 3, characterized in that, The two lead screws (6) are of the same specifications and rotate in opposite directions.

5. The coal mine ventilation device according to claim 1, characterized in that, The rinsing mechanism includes a fixed frame and a rinsing pipe (8). The fixed frame is fixedly installed at the bottom of the rear side of the frame (1). The rinsing pipe (8) is fixedly installed inside the fixed frame. Multiple inclined nozzles are fixedly installed at equal intervals on the outer surface of the rinsing pipe (8). All of the multiple nozzles are inclined downward and facing the frame (1).

6. The coal mine ventilation device according to claim 5, characterized in that, One end of the flushing pipe (8) extends to one side of the fixing frame and is fixedly installed with a solenoid valve (9).

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