Automatic ash removal device for coal mine tunneling roadway dust remover

Abstract

The utility model relates to the technical field of coal mining production, in particular to an automatic ash removal device for a coal mine tunneling roadway dust remover, and aims to solve the problems that when the dust remover in a coal mine roadway is subjected to ash removal operation at present, the ash removal operation is time-consuming and labor-consuming, the ash removal is not thorough, and the dust removal efficiency is high due to the fact that a manual button operation mode is generally adopted for ash removal. And the overall dust removal operation efficiency of the dust remover is finally influenced. According to the device, a dust removal switch and a blow-down valve are transformed into an anti-explosion electromagnetic valve for automatic control, air with dust is filtered through an air filter element and then purified air is discharged through an axial flow type extraction fan, after certain dust is accumulated on the air filter element and a PLC monitors load change, the anti-explosion electromagnetic valve is controlled to open the blow-down valve and a pilot pulse valve, and the blow-down valve and the pilot pulse valve are switched on. And then the air in the air compression energy storage bag passes through the pulse air guide pipe and the ash removal nozzle, so that the accumulated dust in the air filter element of the dust remover is quickly and efficiently blown and cleaned, and the overall dust removal operation efficiency of the dust remover is obviously improved.

Description

Technical Field

[0001] This utility model relates to the field of coal mining production technology, specifically to an automatic dust removal device for dust collectors in coal mine tunneling roadways. Background Technology

[0002] In recent years, with the increasing level of comprehensive excavation in coal mine roadways, dust control equipment has been widely used in tunneling roadways. KCG series dry dust collectors for mining have been developed to efficiently extract and purify dust at the tunneling face. The dust collectors use compressed air pulse jet cleaning. The original dust collector cleaning method could only be carried out by manual buttons, which were distributed on both sides of the dust collector. There were many buttons, and each time the manual cleaning switch was pressed, the air accumulator needed to store energy, which made the energy storage time long and the cleaning process cumbersome. When manual cleaning was adopted, it required the occupation of workers, and the amount of dust accumulation and energy storage pressure of the dust collector needed to be observed regularly. The tunneling intensity, geological conditions, personnel quality and other factors have a significant impact on the cleaning efficiency. Moreover, the dust collector was often not cleaned in time, which led to the air filter inside the dust collector being blocked by dust, seriously affecting the dust removal effect of the dust collector. Utility Model Content

[0003] This invention provides an automatic dust removal device for dust collectors in coal mine tunneling roadways, in order to solve the problems mentioned above.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An automatic dust removal device for a dust collector in a coal mine tunneling roadway includes a dust collector body. A negative pressure duct is connected to one side of the dust collector body, and an axial flow exhaust fan is connected to the other side of the dust collector body. An explosion-proof solenoid valve is provided on the side of the dust collector body near the negative pressure duct. The explosion-proof solenoid valve is connected to a pilot pulse valve. An air compression energy storage tank is connected to one side of the pilot pulse valve, and a pulse air guide pipe is connected to the other side of the pilot pulse valve. Multiple dust removal nozzles are evenly distributed at the bottom of the pulse air guide pipe. The explosion-proof solenoid valve and the pilot pulse valve are also connected to a PLC controller.

[0006] Furthermore, the explosion-proof solenoid valve is connected to a manual dust removal valve, the air compression energy storage unit is connected to a drain valve, and both the manual dust removal valve and the drain valve are connected to the PLC controller.

[0007] Furthermore, the dust collector body is provided with multiple air filter elements, and the cleaning nozzles are all arranged facing the air filter elements.

[0008] Furthermore, the PLC controller is also connected to an audible and visual alarm.

[0009] This utility model has the following beneficial effects:

[0010] This utility model provides an automatic dust removal device for dust collectors in coal mine tunneling roadways. It mainly consists of a dust collector body, an explosion-proof solenoid valve, a pilot pulse valve, a dust removal valve, a drain valve, a pulse air duct, and a PLC controller. Automatic control is achieved by replacing the manual dust removal switch and manual drain valve with an explosion-proof solenoid valve. A negative pressure duct collects dust-laden air into the dust collector body, where it is filtered through an air filter. The purified air is then discharged by an axial flow exhaust fan. When a certain amount of dust accumulates in the air filter, the PLC controller detects the negative pressure. After the load changes, the explosion-proof solenoid valve opens the electric drain valve and the pilot pulse valve, allowing the air in the compressed air storage tank to pass through the pulse air duct and the dust removal nozzle, thereby achieving rapid and efficient cleaning of the dust accumulated in the air filter of the dust collector. This significantly improves the overall dust removal efficiency of the dust collector and solves the problem that the current method of manually operating buttons is commonly used for dust removal in coal mine roadways, which usually results in time-consuming, labor-intensive, and incomplete dust removal, ultimately affecting the overall dust removal efficiency of the dust collector.

[0011] This invention can upgrade the existing manual periodic dust cleaning method to automatic control dust cleaning. First, it solves the problem of frequent manual dust cleaning; second, it reduces complex operation procedures and avoids human error; and third, it realizes automatic control. After the energy storage pressure and dust accumulation reach the set values, it can realize automatic dust cleaning and unattended operation.

[0012] In this utility model, the dust removal control system of the dust collector uses a Siemens S7-200 PLC controller 13 as the core main control element. All components are installed in an explosion-proof electrical control box, and an explosion-proof solenoid valve 5 is used as the control element. The voice pointer is modified into an audible and visual alarm 14, which has low modification cost and good performance. The programmed control can automatically monitor the dust removal pressure and air energy storage pressure to achieve automatic control, reducing the problem of inaccurate pressure observation and insufficient energy storage caused by human operation, which leads to dust removal failure. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] The meanings of the reference numerals in the attached figures are as follows:

[0015] 1. Negative pressure duct; 2. Dust collector body; 3. Axial flow exhaust fan; 5. Explosion-proof solenoid valve; 6. Pilot pulse valve; 7. Air compression energy storage tank; 8. Manual dust removal valve; 9. Drain valve; 10. Pulse air duct; 11. Dust removal nozzle; 12. Air filter element; 13. PLC controller; 14. Audible and visual alarm. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0017] like Figure 1 As shown, an automatic dust removal device for a dust collector in a coal mine tunnel includes a dust collector body 2. A negative pressure duct 1 is connected to one side of the dust collector body 2, and an axial flow exhaust fan 3 is connected to the other side of the dust collector body 2. An explosion-proof solenoid valve 5 is provided on the side of the dust collector body 2 near the negative pressure duct 1. The explosion-proof solenoid valve 5 is connected to a pilot pulse valve 6. An air compression energy storage tank 7 is connected to one side of the pilot pulse valve 6, and a pulse air guide pipe 10 is connected to the other side of the pilot pulse valve 6. Multiple dust removal nozzles 11 are evenly distributed at the bottom of the pulse air guide pipe 10. The explosion-proof solenoid valve 5 and the pilot pulse valve 6 are also connected to a PLC controller 13.

[0018] The explosion-proof solenoid valve 5 is connected to a manual cleaning valve 8, and the air compression energy storage pack 7 is connected to a drain valve 9. Both the manual cleaning valve 8 and the drain valve 9 are connected to the PLC controller 13.

[0019] The dust collector body 2 is provided with multiple air filter elements 12, and the dust removal nozzles 11 are all arranged facing the air filter elements 12.

[0020] The PLC controller 13 is also connected to an audible and visual alarm 14.

[0021] In practical application, the negative pressure duct 1 collects dust-laden air into the dust collector body 2, then filters the dust through the air filter element 12, and finally discharges the purified air through the axial flow exhaust fan 3. When the air filter element 12 accumulates a certain amount of dust, the PLC controller 13 detects the load change and activates the automatic dust removal device of the dust collector. It then controls the explosion-proof solenoid valve 5 to open the electric drain valve 9 and the pilot pulse valve 6, thereby controlling the air from the compressed air storage tank 7 to enter and pass through the pulse duct 10 and the dust removal nozzle 11, thus achieving rapid and efficient cleaning of the dust accumulated in the air filter element 12. Furthermore, by adding a manual dust removal valve 8 and installing an audible and visual alarm 14, a voice announcement can be made when the device begins automatic dust removal according to a preset program, effectively improving the reliability and flexibility of the dust removal operation, and thus enhancing the overall dust removal efficiency of the dust collector. Therefore, this device has good practicality.

Claims

1. An automatic dust removal device for a dust collector in a coal mine tunneling roadway, comprising a dust collector body (2), a negative pressure duct (1) connected to one side of the dust collector body (2), and an axial flow exhaust fan (3) connected to the other side of the dust collector body (2), characterized in that: The dust collector body (2) is provided with an explosion-proof solenoid valve (5) on the side near the negative pressure air duct (1). The explosion-proof solenoid valve (5) is connected to a pilot pulse valve (6). One side of the pilot pulse valve (6) is connected to an air compression energy storage pack (7). The other side of the pilot pulse valve (6) is connected to a pulse air duct (10). Multiple dust cleaning nozzles (11) are evenly distributed at the bottom of the pulse air duct (10). The explosion-proof solenoid valve (5) and the pilot pulse valve (6) are also connected to a PLC controller (13).

2. An automatic dust removal device for a dust collector in a coal mine tunneling roadway according to claim 1, characterized in that: The explosion-proof solenoid valve (5) is connected to a manual cleaning valve (8), the air compression energy storage pack (7) is connected to a drain valve (9), and both the manual cleaning valve (8) and the drain valve (9) are connected to the PLC controller (13).

3. An automatic dust removal device for a dust collector in a coal mine tunneling roadway according to claim 1, characterized in that: The dust collector body (2) is provided with multiple air filter elements (12), and the dust removal nozzles (11) are all arranged facing the air filter elements (12).

4. An automatic dust removal device for a dust collector in a coal mine tunneling roadway according to claim 2, characterized in that: The PLC controller (13) is also connected to an audible and visual alarm (14).

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