Coal mine goaf stopping agent fire preventing and extinguishing device

Abstract

The utility model belongs to the technical field of coal mine fire prevention, and particularly relates to a coal mine goaf stopping agent fire preventing and extinguishing device which comprises a stopping agent liquid storage box, a liquid inlet control unit, a liquid outlet control unit, a liquid level detection unit, a concentration detection unit and a stirring unit, and the liquid inlet control unit, the liquid outlet control unit, the liquid level detection unit, the concentration detection unit and the stirring unit are electrically connected with a controller. The liquid inlet control unit is located on the upper portion of the stopping agent storage box, the liquid outlet control unit is located on the lower portion of the stopping agent storage box, the stirring unit comprises a driving part and a stirring part which are connected with each other, the driving part is located on the top of the stopping agent storage box, and the stirring part is located in the stopping agent storage box. The liquid level detection unit and the concentration detection unit are used for detecting the liquid level state and the concentration state in the inhibitor liquid storage tank, and the controller is used for receiving a liquid level detection signal and a concentration detection signal so as to control the operation states of the liquid inlet control unit, the liquid outlet control unit and the stirring unit. The device can solve the problem that in the prior art, the concentration of a stopping agent solution is not easy to control.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal mine fire prevention, in particular to a retardant fire prevention and extinguishing device for coal mine goaf areas. Background Art

[0002] Coal mine goaf generally refers to the void or cavity filled with collapsed coal and rock left after underground coal mining is completed during coal mining operations, and goaf fire prevention and extinguishing equipment generally refers to fire prevention and fire extinguishing equipment used in various spontaneous combustion fire scenarios. This type of equipment has a wide range of application scenarios.

[0003] The equipment for fire prevention in coal mine goaf generally adopts the method of spraying inhibitors for fire prevention. In the prior art, the inhibitor equipment generally adopts hydraulic stirring to prepare the inhibitor. There are usually two forms of hydraulic stirring. One is manual operation. The operator takes a water pipe and goes directly to the inhibitor mixing barrel to spray the solid inhibitor. The second is to fix the water inlet pipe to the inhibitor mixing barrel and prepare the inhibitor solution by flushing with water. Although the first method has a better effect of preparing the inhibitor solution, it requires the operator to spray with a water pipe, and the labor intensity of the workers is high. Although the second method has low labor intensity, the concentration of the inhibitor solution is not easy to control. Utility Model Content

[0004] The technical problem solved by the utility model is to provide a coal mine goaf area inhibitor fire prevention and extinguishing device to solve the problem that the concentration of the inhibitor solution is difficult to control in the prior art.

[0005] The basic scheme provided by the utility model: a coal mine goaf area inhibitor fire prevention and extinguishing device, comprising an inhibitor liquid storage tank, a liquid inlet control unit, a liquid outlet control unit, a liquid level detection unit, a concentration detection unit, a stirring unit and a controller, wherein the liquid inlet control unit, the liquid outlet control unit, the liquid level detection unit, the concentration detection unit and the stirring unit are all electrically connected to the controller;

[0006] The inhibitor storage tank stores inhibitor, the liquid inlet control unit is located at the upper part of the inhibitor storage tank, the liquid outlet control unit is located at the lower part of the inhibitor storage tank, the stirring unit includes a driving part and a stirring part connected to each other, the driving part is located at the top of the inhibitor storage tank, and the stirring part is located inside the inhibitor storage tank; the liquid level detection unit and the concentration detection unit are used to detect the liquid level state and concentration state in the inhibitor storage tank, and the controller is used to receive the liquid level detection signal of the liquid level detection unit and the concentration detection signal of the concentration detection unit to control the operation state of each liquid inlet control unit, the liquid outlet control unit, and the stirring unit.

[0007] Furthermore, three feed holes are provided on the top of the inhibitor storage tank, and upwardly protruding curling edges are provided at the edges of the feed holes, and a corresponding cover plate is installed on each of the feed holes.

[0008] Furthermore, a liquid inlet is opened on the upper part of the inhibitor storage tank, and the liquid inlet control unit includes a liquid inlet solenoid valve and an electronic flow meter. One end of the liquid inlet solenoid valve is connected to the liquid inlet, and the other end is connected to an external water storage device. The electronic flow meter is installed on the liquid inlet solenoid valve, and the controller is also used to control the opening and closing state of the liquid inlet solenoid valve.

[0009] Furthermore, a plurality of liquid outlets are provided at the lower portion of the inhibitor storage tank, and the liquid outlet control unit includes a liquid outlet solenoid valve, a liquid outlet mechanical valve and an inhibitor pump. One end of the liquid outlet solenoid valve is connected to the liquid outlet, and the other end is connected to the liquid outlet mechanical valve. The other end of the liquid outlet mechanical valve is connected to the inhibitor pump. The controller is also used to control the opening and closing states of the liquid outlet solenoid valve and the inhibitor pump.

[0010] Furthermore, the driving part in the stirring unit is a reduction motor, and the stirring part includes a stirring shaft and an agitator. The reduction motor is installed on the top of the inhibitor storage tank, and the driving shaft of the reduction motor extends into the inhibitor storage tank. One end of the stirring shaft is connected to the driving shaft of the reduction motor, and the other end is connected to the agitator. The controller is also used to control the operating state of the reduction motor.

[0011] Furthermore, it also includes a residual liquid solenoid valve. A residual liquid port is provided at the bottom of the inhibitor storage tank. The residual liquid solenoid valve is installed at the residual liquid port. The residual liquid solenoid valve is electrically connected to a controller. The controller is also used to control the opening and closing state of the residual liquid solenoid valve.

[0012] Furthermore, it also includes a plurality of bases, which are installed at the bottom of the inhibitor storage tank.

[0013] Furthermore, it also includes an alarm module, which is electrically connected to the controller. The controller is also used to control the alarm module to send an alarm signal after the operation of the liquid inlet control unit, the liquid outlet control unit, the residual liquid solenoid valve and the stirring unit is completed.

[0014] Furthermore, the alarm module adopts one of a buzzer and a warning light.

[0015] The principle and advantage of the utility model are as follows: in the utility model, in view of the problem that the concentration of the existing inhibitor is difficult to control during use, firstly, an inhibitor fire prevention and extinguishing device integrating inhibitor mixing, stirring and automatic liquid discharge is set up. The device automatically controls each step through a controller, so that when the inhibitor is used for fire prevention and extinguishing work in the coal mine goaf area, there is no need to manually mix the inhibitor. The finished product of the inhibitor fire prevention and extinguishing material can be generated by the device of the present application. The fire prevention and extinguishing operation is simple, it can be used as soon as it is generated, and the concentration can be controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0017] Figure 2 This is a schematic diagram of the top of the inhibitor storage tank of an embodiment of the utility model;

[0018] Figure 3 This is a functional block diagram of an embodiment of the utility model. DETAILED DESCRIPTION

[0019] The following is further described in detail through specific implementation methods:

[0020] The marks in the drawings of the specification include: inhibitor liquid storage tank 1, feed port 101, cover plate 102, liquid inlet 103, liquid outlet 104, residual liquid port 105, controller 2, liquid inlet control unit 3, liquid inlet solenoid valve 301, electronic flow meter 302, liquid outlet control unit 4, liquid outlet solenoid valve 401, liquid outlet mechanical valve 402, inhibitor pump 403, stirring unit 5, reduction motor 501, stirring shaft 502, stirrer 503, liquid level detection unit 6, concentration detection unit 7, residual liquid solenoid valve 8.

[0021] The embodiment is basically as follows Figure 1 , Figure 2 and Figure 3 As shown: a coal mine goaf area inhibitor fire prevention and extinguishing device, including an inhibitor liquid storage tank 1, a liquid inlet control unit 3, a liquid outlet control unit 4, a liquid level detection unit 6, a concentration detection unit 7, a stirring unit 5, a residual liquid solenoid valve 8, an alarm module and a controller 2, wherein:

[0022] The inhibitor storage tank 1 is a rectangular box with equal width and height, and the length is 1.8-2 times the width. In this application, the length is twice the width. Three feed ports 101 are opened on the top of the inhibitor storage tank 1, two of which are located at the two ends of the long side of the top of the inhibitor storage tank 1, and one is located in the middle of the top of the inhibitor storage tank 1. The feed port 101 is used for workers to put the inhibitor into the inhibitor storage tank 1, and in order to ensure that there are no impurities inside the inhibitor storage tank 1 Effect, a curling edge is provided at the edge of the feed port 101, and the height of the curling edge in the present application is 2-5 cm, specifically 3 cm, to prevent debris on the top of the inhibitor storage tank 1 from entering the inhibitor storage tank 1 through the feed port 101; at the same time, a cover plate 102 is correspondingly provided on the feed port 101, and a downward curling edge is provided around the edge of the cover plate 102 to cover the curling edge of the feed port 101 and prevent the cover plate 102 from moving.

[0023] The liquid inlet control unit 3, the liquid outlet control unit 4, the liquid level detection unit 6, the concentration detection unit 7, the stirring unit 5, the residual liquid solenoid valve 8, and the alarm module are all electrically connected to the controller 2, wherein the liquid inlet control unit 3 includes a liquid inlet solenoid valve 301 and an electronic flowmeter 302, and a liquid inlet 103 is opened on the upper part of the inhibitor storage tank 1, one end of the liquid inlet solenoid valve 301 is connected to the liquid inlet 103, and the other end is connected to an external water storage device, the electronic flowmeter 302 is installed on the liquid inlet solenoid valve 301, and the controller 2 is also used to control the opening and closing state of the liquid inlet solenoid valve 301.

[0024] The liquid outlet control unit 4 includes a liquid outlet solenoid valve 401, a liquid outlet mechanical valve 402 and a chemical pump 403. A plurality of liquid outlets 104 are opened at the lower part of the inhibitor liquid storage tank 1. Specifically, a liquid outlet 104 is opened on both sides of the long side of the inhibitor liquid storage tank 1. One end of the liquid outlet solenoid valve 401 is connected to the liquid outlet 104, and the other end is connected to the liquid outlet mechanical valve 402. The other end of the liquid outlet mechanical valve 402 is connected to the chemical pump 403. The controller 2 is also used to control the opening and closing states of the liquid outlet solenoid valve 401 and the chemical pump 403.

[0025] The stirring unit 5 includes a driving part and a stirring part. In the present application, two stirring units 5 are provided, wherein the driving part is a reduction motor 501, and the stirring part includes a stirring shaft 502 and an agitator 503. The reduction motor 501 is installed on the top of the inhibitor storage tank 1, and the driving shaft of the reduction motor 501 extends into the inhibitor storage tank 1. One end of the stirring shaft 502 is connected to the driving shaft of the reduction motor 501, and the other end is connected to the agitator 503. The controller 2 is also used to control the operating state of the reduction motor 501.

[0026] A residual liquid port 105 is provided at the bottom of the inhibitor storage tank 1 , and the residual liquid solenoid valve 8 is installed at the residual liquid port 105 . The residual liquid solenoid valve 8 is electrically connected to the controller 2 , and the controller 2 is also used to control the opening and closing state of the residual liquid solenoid valve 8 .

[0027] At the same time, a plurality of bases are provided at the bottom of the inhibitor storage tank 1, specifically two bases are provided, each base has a height of 10-20 cm in the present application, specifically 15 cm, and the base is 30-50 cm from the end of the inhibitor storage tank 1, specifically 40 cm.

[0028] The alarm module sends out an alarm signal under the control of the controller 2. Specifically, the controller 2 controls the alarm module to send out an alarm signal after the operation of the liquid inlet control unit 3, the liquid outlet control unit 4, the residual liquid solenoid valve 8 and the stirring unit 5 is completed; in the present application, the alarm module adopts one of a buzzer or a warning light, and a warning light can be adopted in this embodiment.

[0029] The specific implementation process is as follows: The operation process of this application may include a manual control mode of the controller 2 and an automatic control mode of the controller 2, which can control the flow rate for quantitative liquid inlet and concentration detection respectively, specifically:

[0030] 1. When the quantitative liquid is added and the controller 2 is in the manual control mode, the operation of the retardant fire prevention and extinguishing device in the coal mine goaf area is as follows:

[0031] The liquid inlet volume is set by the controller 2, and the residual liquid solenoid valve 8 is opened by the controller 2. After all the residual liquid is discharged, the residual liquid solenoid valve 8 is closed by the controller 2; the liquid inlet solenoid valve 301 is opened by the controller 2, and when the liquid inlet volume is equal to the set volume, the controller 2 automatically closes the liquid inlet solenoid valve 301; the stirring unit 5 is started by the controller 2, and the solid material of the inhibitor is added to the inhibitor storage tank 1 (according to the required concentration and the set liquid inlet volume), and the stirring unit 5 continues to run for 60 to 120 seconds; the liquid outlet solenoid valve 401 and the inhibitor pump 403 are opened by the controller 2 to transport the inhibitor solution to the use site. When the liquid level is lower than the minimum liquid level, the stirring unit 5 is stopped by the controller 2, and the liquid outlet solenoid valve 401 is closed. The controller 2 issues an alarm through the alarm module to indicate that the delivery of the inhibitor solution is completed, and the above operation is repeated.

[0032] 2. When the quantitative liquid is added and the controller 2 is in the automatic control mode, the operation of the retardant fire prevention and extinguishing device in the coal mine goaf area is as follows:

[0033] The residual liquid solenoid valve 8 is opened by the controller 2, and the residual liquid solenoid valve 8 is closed by the controller 2 after all the residual liquid is discharged; the solid material of the inhibitor is added to the inhibitor storage tank 1 (according to the required concentration and the set liquid inlet amount), the liquid inlet amount is set by the controller 2, and the mode of the controller 2 is set to the automatic control mode, and the controller 2 automatically opens the liquid inlet solenoid valve 301. When the liquid inlet amount is equal to the set amount, the controller 2 automatically closes the liquid inlet solenoid valve 301; the controller 2 automatically starts the stirring unit 5; after the stirring unit 5 runs for 60 to 120 seconds, the controller 2 automatically starts the inhibitor pump 403 to transport the inhibitor solution to the place of use. When the liquid level is lower than the minimum liquid level, the controller 2 automatically stops the stirring unit 5 and closes the liquid outlet solenoid valve 401. The controller 2 issues an alarm through the alarm module to indicate that the delivery of the inhibitor solution is completed, and the operation mode of the controller 2 automatically changes to the manual mode; repeat the above operations.

[0034] 3. When the flow rate is controlled by the concentration detection unit 7 and the controller 2 is in the manual control mode, the operation of the retardant fire prevention and extinguishing device in the coal mine goaf area is as follows:

[0035] The liquid inlet solenoid valve 301 is opened by the controller 2. When the liquid level in the liquid storage tank is just higher than the stirring liquid level, the liquid inlet solenoid valve 301 is closed. The stirring unit 5 is started by the controller 2, and the inhibitor solid material is added to the inhibitor liquid storage tank 1. The stirring unit 5 is allowed to continue to run for 60 to 120 seconds. The liquid inlet solenoid valve 301 is opened by the controller 2 until the concentration of the inhibitor solution is reduced to the required concentration, and the liquid inlet solenoid valve 301 is closed by the controller 2. The liquid outlet solenoid valve 401 and the inhibitor pump 403 are opened by the controller 2 to transport the inhibitor solution to the place of use. When the liquid level is lower than the stirring liquid level, the stirring unit 5 is stopped by the controller 2. When the liquid level is lower than the minimum liquid level, the inhibitor pump 403 is stopped by the controller 2 and the liquid outlet solenoid valve 401 is closed. The controller 2 issues an alarm through the alarm module to indicate that the inhibitor solution has been transported, and the above operation is repeated.

[0036] 4. When the flow rate is controlled by the concentration detection unit 7 and the controller 2 is in the automatic control mode, the operation of the retardant fire prevention and extinguishing device in the coal mine goaf area is as follows:

[0037] Add the solid material of the inhibitor to the inhibitor storage tank 1, set the concentration of the inhibitor solution in the controller 2, set the mode of the controller 2 to the automatic control mode, and the controller 2 automatically opens the liquid inlet solenoid valve 301. When the liquid level in the storage tank is just higher than the stirring liquid level, the liquid inlet solenoid valve 301 is closed; the controller 2 automatically turns on the stirring unit 5 to stir for 60 to 120 seconds, and then detects the concentration of the inhibitor solution. When the concentration of the inhibitor solution is lower than 90% of the set concentration, the controller 2 uses the built-in sound and light alarm to sound and light alarm that the inhibitor concentration is too low. When the concentration of the inhibitor solution is higher than the set concentration, the controller 2 automatically opens the liquid inlet valve until the concentration of the inhibitor solution drops to the set concentration, and then closes the liquid inlet solenoid valve 301. When the liquid level is higher than or equal to the maximum liquid level and the concentration of the inhibitor solution is greater than 110% of the set concentration, the controller 2 uses the alarm module to sound and light alarm that the inhibitor concentration is too high. When the concentration of the inhibitor solution is 90% to 110% of the set concentration, the controller 2 automatically opens the liquid outlet solenoid valve 401 and the inhibitor pump 403 to transport the inhibitor solution to the place of use. When the liquid level is lower than the stirring level, the controller 2 automatically stops the stirring unit 5. When the liquid level is lower than the minimum level, the controller 2 automatically stops the inhibitor pump 403 and closes the liquid outlet solenoid valve 401 at the same time. The operating mode of the controller 2 automatically changes to manual mode. The controller 2 issues an alarm through the alarm module to indicate that the inhibitor solution delivery is completed, and repeats the above operation.

[0038] The above are only embodiments of the utility model. The common sense such as the known specific structures and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the utility model before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for the technicians in this field, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, which will not affect the effect of the implementation of the utility model and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to explain the content of the claims.

Claims

1. A coal mine goaf area retardant fire prevention and extinguishing device, characterized by: It includes an inhibitor storage tank, a liquid inlet control unit, a liquid outlet control unit, a liquid level detection unit, a concentration detection unit, a stirring unit and a controller, wherein the liquid inlet control unit, the liquid outlet control unit, the liquid level detection unit, the concentration detection unit and the stirring unit are all electrically connected to the controller; The inhibitor storage tank stores inhibitor, the liquid inlet control unit is located at the upper part of the inhibitor storage tank, the liquid outlet control unit is located at the lower part of the inhibitor storage tank, the stirring unit includes a driving part and a stirring part connected to each other, the driving part is located at the top of the inhibitor storage tank, and the stirring part is located inside the inhibitor storage tank; the liquid level detection unit and the concentration detection unit are used to detect the liquid level state and concentration state in the inhibitor storage tank, and the controller is used to receive the liquid level detection signal of the liquid level detection unit and the concentration detection signal of the concentration detection unit to control the operation state of each liquid inlet control unit, the liquid outlet control unit, and the stirring unit.

2. The coal mine goaf area retardant fire prevention and extinguishing device according to claim 1 is characterized in that: The top of the inhibitor storage tank is provided with three feed holes, the edges of the feed holes are provided with curling edges protruding upwards, and each of the feed holes is installed with a corresponding cover plate.

3. The coal mine goaf area retardant fire prevention and extinguishing device according to claim 2 is characterized in that: A liquid inlet is provided at the top of the inhibitor storage tank, and the liquid inlet control unit includes a liquid inlet solenoid valve and an electronic flow meter. One end of the liquid inlet solenoid valve is connected to the liquid inlet, and the other end is connected to an external water storage device. The electronic flow meter is installed on the liquid inlet solenoid valve, and the controller is also used to control the opening and closing state of the liquid inlet solenoid valve.

4. The coal mine goaf area retardant fire prevention and extinguishing device according to claim 3 is characterized in that: A plurality of liquid outlets are provided at the lower portion of the inhibitor storage tank, and the liquid outlet control unit comprises a liquid outlet solenoid valve, a liquid outlet mechanical valve and an inhibitor pump. One end of the liquid outlet solenoid valve is connected to the liquid outlet, and the other end is connected to the liquid outlet mechanical valve. The other end of the liquid outlet mechanical valve is connected to the inhibitor pump. The controller is also used to control the opening and closing states of the liquid outlet solenoid valve and the inhibitor pump.

5. The coal mine goaf area retardant fire prevention and extinguishing device according to claim 4, characterized in that: The driving part in the stirring unit is a reduction motor, and the stirring part includes a stirring shaft and an agitator. The reduction motor is installed on the top of the inhibitor storage tank, and the driving shaft of the reduction motor extends into the inhibitor storage tank. One end of the stirring shaft is connected to the driving shaft of the reduction motor, and the other end is connected to the agitator. The controller is also used to control the operating state of the reduction motor.

6. The coal mine goaf area retardant fire prevention and extinguishing device according to claim 5, characterized in that: It also includes a residual liquid solenoid valve. A residual liquid port is provided at the bottom of the inhibitor storage tank. The residual liquid solenoid valve is installed at the residual liquid port. The residual liquid solenoid valve is electrically connected to a controller. The controller is also used to control the opening and closing state of the residual liquid solenoid valve.

7. The coal mine goaf area retardant fire prevention and extinguishing device according to claim 6, characterized in that: It also includes a plurality of bases, which are installed at the bottom of the inhibitor storage tank.

8. The coal mine goaf area retardant fire prevention and extinguishing device according to claim 7, characterized in that: It also includes an alarm module, which is electrically connected to the controller. The controller is also used to control the alarm module to send out an alarm signal after the operation of the liquid inlet control unit, the liquid outlet control unit, the residual liquid solenoid valve and the stirring unit is completed.

9. The coal mine goaf area retardant fire prevention and extinguishing device according to claim 8, characterized in that: The alarm module adopts one of a buzzer and a warning light.

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