Preparation device of inhibitor solution for coal mine

Abstract

The utility model belongs to the technical field of coal mine fire prevention, and particularly relates to a coal mine inhibitor solution preparation device which comprises an inhibitor solution storage tank, a circulation stirring mechanism and a controller, a first circulation solution inlet and a first circulation solution outlet are formed in one side of the lower portion of the inhibitor solution storage tank, and the circulation stirring mechanism comprises a circulation pump, a solution outlet pipe, a solution inlet pipe and a first circulation solution branch pipe. One end of the liquid inlet pipe is communicated with the circulating liquid outlet, the other end of the liquid inlet pipe is communicated with the circulating pump, the other end of the circulating pump is communicated with the liquid outlet pipe, the other end of the liquid outlet pipe is communicated with the circulating liquid branch pipe I, and the other end of the circulating liquid branch pipe I is communicated with the circulating liquid inlet I; the circulating pump is electrically connected with the controller, and the controller is used for controlling the on-off state of the circulating pump so as to control the inhibition liquid stored in the inhibition liquid storage tank to be circularly stirred. The stirring device can solve the problems that in the prior art, the concentration of a stopping agent solution is not uniform, and the installation position of the stirring device affects the use range in the limited height of a coal mine.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal mine fire prevention, and in particular relates to an inhibitor solution preparation device for coal mines. Background Art

[0002] Spontaneous combustion in coal mine goaf is one of the main threats to coal mine production safety. Once the goaf spontaneously ignites, it may cause the coal mine production to be suspended, affecting the normal production and operation of the coal mine. It may also cause gas and coal dust explosions and even cause major casualties.

[0003] For the prevention and control of spontaneous combustion in goaf, spraying inhibitors is one of the main prevention and control measures. The raw materials for preparing the inhibitor solution are inhibitor and water. Commonly used inhibitors are generally magnesium chloride and calcium chloride. In the actual application process of coal mines, two methods are often used to prepare the inhibitor solution, which are:

[0004] Natural dissolution method: add the inhibitor to a container containing the inhibitor solution, then add an appropriate amount of water, and allow the inhibitor to dissolve in the water through natural dissolution to form an inhibitor solution;

[0005] Mechanical stirring method: Install a stirring device in the container containing the inhibitor solution. When in use, add a certain amount of water to the container, turn on the stirring device, and then add an appropriate amount of solid inhibitor. Under the stirring of the stirring device, the inhibitor dissolves into the water to form an inhibitor solution.

[0006] Among them, the first method dissolves the inhibitor slowly, and there is even a part of undissolved inhibitor at the bottom of the container, and the concentration of the inhibitor solution does not meet the design requirements. In addition, the concentration of the inhibitor solution is unevenly distributed, and the concentration of the inhibitor solution gradually increases from the top to the bottom of the container. When preparing the inhibitor solution in the second method, a stirring motor needs to be installed on the top of the container, which reduces the efficiency of the container within the limited height range of the well. Utility Model Content

[0007] The technical problem solved by the utility model is to provide a device for preparing an inhibitor solution for coal mines, so as to solve the problems in the prior art that the concentration of the inhibitor solution is uneven and the installation position of the stirring device affects the use range in the limited height of the coal mine.

[0008] The utility model provides a basic scheme: a device for preparing an inhibitor solution for coal mines, comprising an inhibitor liquid storage tank, a circulation stirring mechanism and a controller, wherein a circulating liquid inlet and a circulating liquid outlet are arranged on one side below the inhibitor liquid storage tank, the circulating stirring mechanism comprises a circulating pump, a liquid outlet pipe, a liquid inlet pipe and a circulating liquid branch pipe, one end of the liquid inlet pipe is connected to the circulating liquid outlet, and the other end is connected to the circulating pump, the other end of the circulating pump is connected to the liquid outlet pipe, the other end of the liquid outlet pipe is connected to the circulating liquid branch pipe one, and the other end of the circulating liquid branch pipe one is connected to the circulating liquid inlet one;

[0009] The circulation pump is electrically connected to a controller, and the controller is used to control the on / off state of the circulation pump to control the catalytic liquid stored in the catalytic liquid storage tank to circulate and stir.

[0010] Furthermore, the other side below the inhibitor liquid storage tank also includes a circulating liquid inlet 2, and the circulating stirring mechanism also includes a circulating liquid branch pipe 2 and a tee joint. The two interfaces of the tee joint are connected to the liquid outlet pipe and the circulating liquid branch pipe 1, and the last interface of the tee joint is connected to one end of the circulating liquid branch pipe 2, and the other end of the circulating liquid branch pipe 2 is connected to the circulating liquid inlet 2.

[0011] Furthermore, the circulation stirring mechanism also includes two high-pressure nozzles, which are respectively installed at the free ends of the first circulation liquid inlet and the second circulation liquid inlet.

[0012] Furthermore, a plurality of feed ports are provided on the top of the inhibitor liquid storage tank, a feed cover is installed on the top of the feed port, and a liquid level gauge is vertically installed in the middle of the top of the inhibitor liquid storage tank. The liquid level gauge is electrically connected to the controller, and the controller is used to receive the detection signal of the liquid level gauge.

[0013] Furthermore, the side of the inhibitor liquid storage tank also includes a water inlet, an upper density meter and a lower density meter. The water inlet and the upper density meter are installed above the side of the inhibitor liquid storage tank, and the lower density meter is installed below the side of the inhibitor liquid storage tank. The upper density meter and the lower density meter are both electrically connected to the controller, and the controller is also used to receive detection signals from the upper density meter and the lower density meter.

[0014] Furthermore, it also includes an alarm module, which is electrically connected to the controller. The controller is used to control the alarm module to send out an alarm signal according to the received detection signal of the liquid level meter and the detection signals of the upper density meter and the lower density meter.

[0015] Furthermore, it also includes a liquid discharge mechanism, which includes a chemical pump, a chemical pump liquid inlet pipe and a chemical pump liquid outlet pipe. The lower side of the chemical liquid storage tank also includes a chemical liquid outlet. One end of the chemical pump liquid inlet pipe is connected to the chemical liquid outlet, and the other end is connected to the chemical pump. The other end of the chemical pump is connected to the chemical pump liquid outlet pipe.

[0016] The principle and advantage of the utility model are as follows: in the present application, water is added to the inhibitor liquid storage tank through the water inlet, and inhibitor is added to the inhibitor liquid storage tank through the feed inlet. After the detection signal of the liquid level meter reaches the standard, the circulation pump is turned on under the action of the circulation stirring mechanism, and the solution in the inhibitor liquid storage tank is circulated into the inhibitor liquid storage tank through the circulation liquid outlet, the liquid inlet pipe, the liquid outlet pipe, the circulation pump, the circulation liquid branch pipe 1, the circulation liquid inlet 1, the high-pressure nozzle, the circulation liquid branch pipe 2, and the circulation liquid inlet 2. At the same time, during the circulation process, it is judged whether the requirements are met according to the detection signals of the upper density meter and the lower density meter. If the requirements are met, the inhibitor pump is turned on to transport the inhibitor solution in the inhibitor liquid storage tank through the inhibitor liquid outlet, the inhibitor pump liquid inlet pipe, the inhibitor pump, and the inhibitor pump liquid outlet pipe to the use location in the goaf.

[0017] Therefore, the advantage of the utility model is that the solution in the inhibitor liquid storage tank is circulated and pumped into the inhibitor liquid storage tank through a circulation pump, a circulation pipeline and a high-pressure nozzle, thereby accelerating the dissolution of the inhibitor and preparing a qualified inhibitor solution, which can solve the problems of slow dissolution of the inhibitor, low efficiency and occupying the top space of the container in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0019] Figure 2 It is a cross-sectional view taken along line AA of an embodiment of the present utility model;

[0020] Figure 3 This is a functional block diagram of an embodiment of the utility model. DETAILED DESCRIPTION

[0021] The following is further described in detail through specific implementation methods:

[0022] The marks in the drawings of the specification include: inhibitor liquid storage tank 1, water inlet 2, feed inlet 3, feed cover 4, liquid level meter 5, upper density meter 6, lower density meter 7, circulating liquid outlet 8, circulating liquid inlet one 9, circulating liquid inlet two 10, high-pressure nozzle 11, liquid inlet pipe 12, liquid outlet pipe 13, circulating liquid branch pipe one 14, circulating liquid branch pipe two 15, circulating pump 16, inhibitor liquid outlet 17, inhibitor pump liquid inlet pipe 18, inhibitor pump 19, inhibitor pump liquid outlet pipe 20.

[0023] The embodiment is basically as follows Figure 1 , Figure 2 and Figure 3As shown: a device for preparing an inhibitor solution for coal mines, comprising an inhibitor liquid storage tank 1, a circulating stirring mechanism, a controller, an alarm module and a liquid discharge mechanism, wherein the inhibitor liquid storage tank 1 is used to store a solution of an inhibitor and water and an inhibitor liquid obtained by mixing the inhibitor and water, therefore, a plurality of discharge ports are opened on the top of the inhibitor liquid storage tank 1, and two discharge ports are opened in this embodiment to facilitate rapid feeding, a feed cover 4 is arranged on the top of the feed port 3 to prevent external pollutants from entering the inhibitor liquid storage tank 1; a water inlet 2 is installed on the upper side of the inhibitor liquid storage tank 1, and the water inlet 2 is used to add water to the inhibitor liquid storage tank 1.

[0024] A liquid level gauge 5 is installed in the middle of the top of the inhibitory liquid storage tank 1. The detection end of the liquid level gauge 5 is inserted into the inhibitory liquid storage tank 1 to the bottom to detect the liquid level value in the inhibitory liquid storage tank 1. At the same time, the liquid level gauge 5 is electrically connected to the controller, and the alarm module is electrically connected to the controller. The controller receives the liquid level signal of the liquid level gauge 5. When the liquid level signal indicates that the liquid level value reaches the standard, the controller controls the alarm module to send an alarm signal, thereby stopping feeding and water intake.

[0025] In order to achieve the mixing of the inhibitor and water in the inhibitor liquid storage tank 1, a circulating liquid inlet 9 and a circulating outlet are opened at the bottom of one side of the inhibitor liquid storage tank 1, and a circulating inlet 2 is opened on the other side. In this embodiment, the circulating liquid inlet 1 9 and the circulating liquid inlet 2 10 are opened on both sides to increase the mixing area of ​​the solution in the inhibitor liquid storage tank 1.

[0026] After the inlet and outlet on the inhibitor liquid storage tank 1 are set, they are connected and the stirring function is realized through a circulation stirring mechanism. Specifically, the circulation stirring mechanism includes a circulation pump 16, a liquid outlet pipe 13, a liquid inlet pipe 12, a circulation liquid branch pipe 14, a circulation liquid branch pipe 2 15, a three-way joint and a high-pressure nozzle 11, wherein one end of the liquid inlet pipe 12 is connected to the circulation liquid outlet 8, and the other end is connected to the input end of the circulation pump 16, the output end of the circulation pump 16 is connected to one end of the liquid outlet pipe 13, the other end of the liquid outlet pipe 13 is connected to the first interface of the three interfaces of the three-way joint, the second interface and the third interface are respectively connected to one end of the circulation liquid branch pipe 14 and one end of the circulation liquid branch pipe 2 15, the other end of the circulation liquid branch pipe 14 is connected to the circulation liquid inlet 1 9, and the other end of the circulation liquid branch pipe 2 15 is connected to the circulation liquid inlet 2 10.

[0027] According to the above description, after the circulation pipeline is connected, the high-pressure nozzle 11 is installed at the free ends of the circulating liquid inlet 1 9 and the circulating liquid inlet 2 10. Therefore, the nozzle opening of the high-pressure nozzle 11 faces the inside of the inhibitor liquid storage tank 1. In this embodiment, the shape of the high-pressure nozzle 11 can be conical, truncated cone and cylindrical, and the spraying shape is columnar, so as to realize the fusion of the inhibitor liquid storage tank 1 and the circulation pump 16 to achieve the purpose of uniform stirring.

[0028] In order to determine whether the solution in the inhibitory liquid storage tank 1 is uniformly stirred, in the present application, an upper densitometer 6 is installed on the upper side of the inhibitory liquid storage tank 1, and a lower densitometer 7 is installed on the lower side. The upper densitometer 6 and the lower densitometer 7 are electrically connected to the controller. The controller receives the detection signal of the density of the solution in the inhibitory liquid storage tank 1 from the upper densitometer 6 and the lower densitometer 7. Specifically, when the display difference between the upper densitometer 6 and the lower densitometer 7 is less than 2% of the display value of the lower densitometer 7, it means that the solution in the inhibitory liquid storage tank 1 is uniformly stirred, and the controller controls the alarm module to send an alarm signal according to the detection signal.

[0029] In addition, when the controller receives detection signals from the upper density meter 6 and the lower density meter 7 that meet the standards, it also controls the liquid discharge mechanism to perform liquid discharge operations. Specifically, the liquid discharge mechanism includes a chemical pump 19, a chemical pump liquid inlet pipe 18, and a chemical pump liquid outlet pipe 20. The chemical pump 19 is electrically connected to the controller. The lower side of the chemical liquid storage tank 1 also includes a chemical liquid outlet 17. One end of the chemical pump liquid inlet pipe 18 is connected to the chemical liquid outlet 17, and the other end is connected to the chemical pump 19. The other end of the chemical pump 19 is connected to the chemical pump liquid outlet pipe 20. When the detection signal of the density meter received by the controller meets the standards, the chemical pump 19 is controlled to start.

[0030] At the same time, the controller of the present application may not control the liquid discharge operation of the liquid discharge mechanism. After receiving the alarm signal from the alarm module, the staff manually starts the catalytic pump 19 in the liquid discharge mechanism to spray the catalytic liquid on demand.

[0031] In this embodiment, the alarm module uses a buzzer, and the controller uses a single-chip microcomputer, such as an STM32 single-chip microcomputer.

[0032] The specific implementation process is as follows:

[0033] First, add water to the inhibitor liquid storage tank 1 through the water inlet 2, and add inhibitor to the inhibitor liquid storage tank 1 through the feed inlet 3. After the detection signal of the liquid level meter 5 reaches the standard, then under the action of the circulating stirring mechanism, start the circulating pump 16, and the solution in the inhibitor liquid storage tank 1 is passed through the circulating liquid outlet 8, the liquid inlet pipe 12, the liquid outlet pipe 13, the circulating pump 16, the circulating liquid branch pipe 14, the circulating liquid inlet 19, the high-pressure nozzle 11, the circulating liquid branch pipe 2 15, the circulating liquid inlet 2 10, and the circulating pump 16 into the inhibitor liquid storage tank 1. At the same time, during the circulation process, it is judged whether the requirements are met according to the detection signals of the upper density meter 6 and the lower density meter 7. If the requirements are met, start the inhibitor pump 19, and transport the inhibitor solution in the inhibitor liquid storage tank 1 through the inhibitor liquid outlet 17, the inhibitor pump inlet pipe 18, the inhibitor pump 19, and the inhibitor pump outlet pipe 20 to the use location in the goaf.

[0034] 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 device for preparing an inhibitor solution for coal mines, characterized in that: It includes a chemical retardant liquid storage tank, a circulation stirring mechanism and a controller. A circulation liquid inlet and a circulation liquid outlet are arranged on one side below the chemical retardant liquid storage tank. The circulation stirring mechanism includes a circulation pump, a liquid outlet pipe, a liquid inlet pipe and a circulation liquid branch pipe. One end of the liquid inlet pipe is connected to the circulation liquid outlet, and the other end is connected to the circulation pump. The other end of the circulation pump is connected to the liquid outlet pipe, and the other end of the liquid outlet pipe is connected to the circulation liquid branch pipe. The other end of the circulation liquid branch pipe is connected to the circulation liquid inlet. The circulation pump is electrically connected to a controller, and the controller is used to control the on / off state of the circulation pump to control the catalytic liquid stored in the catalytic liquid storage tank to circulate and stir.

2. The device for preparing an inhibitor solution for coal mine according to claim 1, characterized in that: The other side below the inhibitor liquid storage tank also includes a circulating liquid inlet 2, and the circulating stirring mechanism also includes a circulating liquid branch pipe 2 and a three-way joint. The two interfaces of the three-way joint are connected to the liquid outlet pipe and the circulating liquid branch pipe 1, and the last interface of the three-way joint is connected to one end of the circulating liquid branch pipe 2, and the other end of the circulating liquid branch pipe 2 is connected to the circulating liquid inlet 2.

3. The device for preparing an inhibitor solution for coal mine according to claim 2, characterized in that: The circulation stirring mechanism also includes two high-pressure nozzles, which are respectively installed at the free ends of the first circulation liquid inlet and the second circulation liquid inlet.

4. The device for preparing an inhibitor solution for coal mine according to claim 3, characterized in that: A plurality of feed ports are provided on the top of the inhibitor liquid storage tank, a feed cover is installed on the top of the feed port, and a liquid level meter is vertically installed in the middle of the top of the inhibitor liquid storage tank. The liquid level meter is electrically connected to the controller, and the controller is used to receive the detection signal of the liquid level meter.

5. The device for preparing an inhibitor solution for coal mine according to claim 4, characterized in that: The side of the inhibitor liquid storage tank also includes a water inlet, an upper density meter and a lower density meter. The water inlet and the upper density meter are installed above the side of the inhibitor liquid storage tank, and the lower density meter is installed below the side of the inhibitor liquid storage tank. The upper density meter and the lower density meter are both electrically connected to the controller, and the controller is also used to receive detection signals from the upper density meter and the lower density meter.

6. The device for preparing an inhibitor solution for coal mine according to claim 5, characterized in that: It also includes an alarm module, which is electrically connected to the controller. The controller is used to control the alarm module to send out an alarm signal according to the received detection signal of the liquid level meter and the detection signals of the upper density meter and the lower density meter.

7. The device for preparing an inhibitor solution for coal mine according to claim 6, characterized in that: It also includes a liquid discharge mechanism, which includes a chemical pump, a chemical pump liquid inlet pipe and a chemical pump liquid outlet pipe. The lower side of the chemical liquid storage tank also includes a chemical liquid outlet. One end of the chemical pump liquid inlet pipe is connected to the chemical liquid outlet, and the other end is connected to the chemical pump. The other end of the chemical pump is connected to the chemical pump liquid outlet pipe.

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