Mining gel atomizing and spraying equipment and using method thereof

Abstract

The invention belongs to the technical field of mine safety, and particularly relates to mining gel atomizing and spraying equipment and a using method thereof. The equipment is provided with a controller, and further comprises an ultrasonic atomization device and a spraying device which are connected through an atomization channel. The ultrasonic atomization device comprises an ultrasonic generation assembly and an intelligent radiator; the spraying device comprises a steam fog gel spraying power assembly and a mixed flow spraying assembly; the mist gel spraying power assembly conveys atomized gel to the mixed flow spraying assembly through the Venturi effect, and the mist gel is driven by gas to move to a goaf of a coal mine; the controller controls the ultrasonic atomization device and the spraying device to be started and stopped. The ultrasonic atomization technology is adopted, gel components are atomized into different particle sizes through ultrasonic waves with different frequencies, the atomized gel is conveyed to the spraying device in combination with the Venturi effect, the gel is moved to the coal mine goaf under driving of gas, the problem of hole blockage caused by mist spraying is effectively avoided, the coverage area is increased, and dead angle areas are eliminated.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of mine safety, and particularly relates to a mine gel atomization spraying device and a use method thereof. BACKGROUND

[0002] Coal is an important energy source in China, but in the process of coal mining, coal spontaneous combustion may occur, which may cause serious coal mine fire accidents. The contact of coal with oxygen is the fundamental reason for coal spontaneous combustion, and oxygen isolation is one of the effective ways to prevent coal spontaneous combustion. At present, a stable antioxidant protective film can be formed on the surface of residual coal by spraying vapor mist gel. However, the existing atomization spraying device sprays liquid by atomizing nozzle, which mainly uses high pressure to extrude the liquid in the nozzle to form atomization by the impact of high-speed liquid on the iron sheet. However, the vapor mist gel has relatively large viscosity and molecular weight, which is easy to block the nozzle. At the same time, the water quality under the mine is poor, which is also easy to cause the nozzle hole blocking phenomenon. Therefore, the existing atomization method and device are not suitable for spraying vapor mist gel for fire prevention and extinguishing.

[0003] Therefore, it is necessary to invent a device that is convenient to use, has good atomization effect, is not easy to block the nozzle, and can adjust the vapor mist gel spraying rate and spraying angle according to the requirements for mine fire prevention and extinguishing. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a mine gel atomization spraying device and a use method thereof. The ultrasonic atomization technology is adopted to atomize the gel components into different particle sizes by different frequencies of ultrasonic waves, and the atomized gel is transported to the mixed flow spraying device by combining the Venturi effect. The vapor mist gel is transported to the coal mine goaf under the driving of the gas, which effectively avoids the problem of nozzle hole blocking, increases the coverage area, and eliminates the dead angle area.

[0005] The technical scheme adopted is as follows:

[0006] A mine gel atomization spraying device can be connected to a power supply or provided with a battery assembly to provide power. A controller is arranged, and an ultrasonic atomization device and a spraying device are connected through an atomization channel.

[0007] The ultrasonic atomization device comprises a liquid storage tank, an ultrasonic wave generating assembly, and an intelligent radiator. The intelligent radiator controls the temperature of the ultrasonic wave generating assembly.

[0008] The spraying device comprises a vapor mist gel injection power assembly and a mixed flow spraying assembly. The vapor mist gel injection power assembly transports the atomized gel to the mixed flow spraying assembly through the Venturi effect, and the vapor mist gel is transported to the coal mine goaf under the driving of the gas.

[0009] The ultrasonic atomization device and the spraying device are connected to a controller, and the controller controls the start and stop of the ultrasonic atomization device and the spraying device.

[0010] Preferably, the ultrasonic atomization device has at least two, and is connected to the Venturi tube of the spraying device through an atomization channel, respectively containing different components of the gel, and each atomization channel is provided with a valve.

[0011] Preferably, the ultrasonic wave generating assembly includes an atomization cavity, an ultrasonic atomization piece, and a liquid level sensor, the liquid storage tank is connected to the atomization cavity, the ultrasonic atomization piece is located at the bottom of the atomization cavity, the gel is atomized into different particle sizes by adjusting different frequencies, and the atomized mist droplets are transported through the atomization channel; the liquid level sensor is installed on the side wall of the atomization cavity and controls the liquid level in the atomization cavity in linkage with the liquid storage tank, the upper part of the liquid storage tank is provided with a liquid inlet, and the lower end is provided with a liquid level control valve.

[0012] Preferably, the intelligent radiator includes a temperature sensor and a variable frequency fan, the temperature sensor is arranged in the liquid inside the atomization cavity, and the variable frequency fan is located at the bottom outside the atomization cavity; when the set temperature is exceeded, the variable frequency fan is started to dissipate heat; when the temperature continues to rise, the cooling is increased by automatically adjusting the frequency to increase the wind speed.

[0013] Preferably, the steam mist gel spraying power assembly includes a flow controller, a pressure transmitter and a Venturi tube, wherein the flow controller and the pressure transmitter are connected to mine compressed air or mobile source high-pressure inert gas, and can provide different spraying pressures and distances according to spraying requirements.

[0014] Preferably, the mixed flow spraying assembly includes a static mixing pipe and an H-shaped mixed flow nozzle, both of which are connected through a hinge, and the H-shaped mixed flow nozzle realizes adjustable direction.

[0015] A use method of a mine gel atomization spraying device, a temperature sensor, a variable frequency fan, an ultrasonic atomization piece, a liquid level sensor, a liquid level control valve, a flow controller, a pressure transmitter and other valves are connected to a controller and controlled by the controller. Specifically, the method comprises the following steps:

[0016] S1, connecting the steam mist gel spraying power assembly to mine compressed air or high-pressure inert gas, adjusting the pressure transmitter to determine the pressure, and adjusting the flow controller to determine the spraying flow;

[0017] S2, pouring different component solutions of the gel into the liquid storage tank from the liquid inlet;

[0018] S3, the liquid level control valve is opened, the gel solution of different components enters the lower end ultrasonic wave generating assembly through the liquid level control valve, the liquid level reaches the height of the liquid level sensor, the ultrasonic atomization sheet starts to work, and the solution of different components forms extremely fine mist droplets after high-frequency vibration of the ultrasonic atomization sheet and is transported to the Venturi tube through the atomization channel;

[0019] S4, the different component mist droplets converge in the static mixing tube under the action of negative pressure formed by the steam mist gel injection power assembly;

[0020] S5, the gel mist droplets after sufficient reaction and mixing are sprayed outward through the H-shaped mixed flow nozzle, and the mixed flow nozzle can adjust the angle to change the drifting range of the steam mist gel;

[0021] S6, after use, continue to run for 1-10 minutes by filling clean water to clean the equipment.

[0022] Preferably, when the temperature sensor detects that the temperature of the ultrasonic generating device exceeds 40 DEG C, the controller starts the variable frequency fan to dissipate heat, and when the temperature continues to rise, the wind speed is increased by automatic frequency adjustment to reduce the temperature.

[0023] Preferably, the atomization frequency range is 20 kHz-50 MHz, and the gel atomization particle size range is 1-10 mu m.

[0024] Preferably, the pressure transmitter can change the pressure of mine pressure air or high-pressure inert gas, the pressure change range is 2-10 times, the injection pressure is 1-10 Mpa, and the injection distance is 1-10 m.

[0025] Compared with the prior art, the beneficial effects of the present application are that:

[0026] The present application innovatively proposes the design idea of advanced atomization from the source, uses ultrasonic devices to atomize different components of steam mist gel from the source in advance, and uses inert gas as a power source, so that the different components after atomization are fully mixed and reacted and sprayed outward through the nozzle, solving the problem that the traditional atomization and spraying equipment atomizes at the end of the injection outlet, and changing the problem that the traditional atomization equipment is easy to block the hole.

[0027] The present application utilizes the negative pressure effect of the Venturi tube to mix and accelerate the injection of the atomized gel and gas, reduces energy consumption, and at the same time, prolongs the injection distance.

[0028] The present application can accurately control the atomization particle size by adjusting the ultrasonic frequency, adapt to different goaf space requirements, and at the same time, achieve the purpose of uniform coverage, the atomization particles are small and uniformly distributed, can penetrate into the dead angle area that the traditional spraying cannot reach, and improve the coverage area. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a sectional view of the mine gel atomizing spraying equipment of the present application;

[0030] Figure 2 is a perspective structural schematic view of the ultrasonic atomizing device of the present application;

[0031] In the figure, 1. liquid inlet; 2. liquid storage tank; 3. temperature sensor; 4. variable frequency fan; 5. ultrasonic atomizing sheet; 6. liquid level sensor; 7. liquid level control valve; 8. flow controller; 9. pressure transmitter; 10. vapor mist gel spraying power assembly; 11. Venturi tube; 12. static mixing pipe; 13. mixed flow nozzle; 14. atomizing channel; 15. atomizing cavity.

[0032] Figure 3 Comparison of the spraying effect of the conventional atomizing device (a) and the atomizing spraying (b) of the mine gel atomizing spraying equipment of the present application. DETAILED DESCRIPTION

[0033] The accompanying drawings are for illustrative purposes only; the present application will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that some prior art or conventional methods can be omitted.

[0034] The gel used in the present application can be composed of two different components A and B, or multiple components, and the number of ultrasonic atomizing devices can be set as needed.

[0035] Example 1

[0036] A mine gel atomizing spraying equipment is provided with a battery assembly to provide power. A controller is provided (the controller is located above the ground in the goaf, which is omitted in the figure, and is connected and controlled using conventional methods), and further comprises an ultrasonic atomizing device and a spraying device, which are connected through an atomizing channel 14;

[0037] The ultrasonic atomizing device comprises a liquid storage tank 1, an ultrasonic wave generating assembly, and an intelligent radiator; the intelligent radiator controls the temperature of the ultrasonic wave generating assembly.

[0038] The spraying device comprises a vapor mist gel spraying power assembly 10 and a mixed flow spraying assembly; the vapor mist gel spraying power assembly 10 delivers the atomized gel to the mixed flow spraying assembly through the Venturi effect, and the vapor mist gel is transported to the coal mine goaf under the driving of the gas;

[0039] The ultrasonic atomizing device and the spraying device are both connected to the controller, which controls the start and stop of the ultrasonic atomizing device and the spraying device.

[0040] The gel used in the application comprises A and B components, the ultrasonic atomization device is provided with two, which are connected to the Venturi tube 11 of the spraying device through the atomization channels 14, and respectively contain A and B components, and the valves can be arranged on the atomization channels 14 or not.

[0041] The ultrasonic wave generating assembly comprises an atomization cavity 15, an ultrasonic atomization sheet 5 and a liquid level sensor 6, the liquid storage tank 2 is connected to the atomization cavity 15, the ultrasonic atomization sheet 5 is located at the bottom of the atomization cavity 15, the gel is atomized into different particle sizes by adjusting different frequencies, and the atomized mist droplets are transported through the atomization channels 14; the liquid level sensor 6 is installed on the side wall of the atomization cavity 15 and controls the liquid level in the atomization cavity 15 in linkage with the liquid storage tank 2, the upper portion of the liquid storage tank 2 is provided with a liquid inlet 1, and the lower end is provided with a liquid level control valve 7.

[0042] The intelligent radiator comprises a temperature sensor 3 and a variable frequency fan 4, the temperature sensor 3 is arranged in the liquid inside the atomization cavity 15, and the variable frequency fan 4 is located at the bottom outside the atomization cavity 15, when the set temperature is exceeded, the variable frequency fan 4 is started to dissipate heat, and when the temperature continues to rise, the cooling can be increased by automatically adjusting the frequency.

[0043] The steam mist gel spraying power assembly 10 comprises a flow controller 8, a pressure transmitter 9 and a Venturi tube 11, wherein the flow controller 8 and the pressure transmitter 9 are connected to mine compressed air or mobile source high-pressure inert gas, and different spraying pressures and distances can be provided according to spraying requirements.

[0044] The mixed flow spraying assembly comprises a static mixing pipe 12 and an H-shaped mixed flow nozzle 13, both of which are connected through a hinge, and the H-shaped mixed flow nozzle 13 can realize adjustable direction.

[0045] A use method of the mine gel atomization spraying equipment, the temperature sensor 3, the variable frequency fan 4, the ultrasonic atomization sheet 5, the liquid level sensor 6, the liquid level control valve 7, the flow controller 8, the pressure transmitter 9 and other valves are all connected to the controller and controlled through the controller. Specifically, the following steps are included:

[0046] S1, the steam mist gel spraying power assembly is connected to the mine compressed air or high-pressure inert gas, the pressure transmitter is adjusted to determine the pressure, and the flow controller is adjusted to determine the spraying flow;

[0047] S2, different component solutions of the gel are respectively poured into the liquid storage tank from the liquid inlet;

[0048] S3, the liquid level control valve 7 is opened, the gel solution of different A, B components enters the lower end ultrasonic wave generating assembly through the liquid level control valve 7, the liquid level height reaches the height of the liquid level sensor 6, the ultrasonic atomization sheet 5 starts to work, the solution of A, B components forms extremely fine mist droplets after high-frequency vibration of the ultrasonic atomization sheet 5, and the mist droplets are transported to the Venturi tube 11 through the atomization channel 14;

[0049] S4, the mist droplets of different components converge in the static mixing tube 12 under the action of negative pressure formed by the steam mist gel spraying power assembly 10.

[0050] S5, the gel mist droplets after sufficient reaction and mixing are sprayed outwards through the H-shaped mixed flow nozzle 13, and the mixed flow nozzle 13 can adjust the angle to change the drifting range of the steam mist gel.

[0051] S6, after use, continue to run for 5 minutes by filling with clean water to clean the equipment.

[0052] When the temperature sensor 3 detects that the temperature of the ultrasonic generating device exceeds 40 DEG C, the controller starts the variable frequency fan 4 to dissipate heat, and when the temperature continues to rise, the wind speed is increased by automatic frequency adjustment to reduce the temperature.

[0053] The steam mist gel spraying power assembly is connected to mine compressed air or high-pressure inert gas, the pressure transmitter 9 is adjusted to determine that the pressure conversion multiple is 1 times, the spraying pressure is 1 Mpa. Turn on the power, the liquid level control valve 7 is opened, the A, B component solution enters the lower end atomization cavity 15 through the liquid level control valve 7, the liquid level height reaches the height of the liquid level sensor 6, the ultrasonic atomization sheet 5 starts to work, the ultrasonic frequency is set to 1 MHz, the A, B component solution forms mist droplets of about 10 μm after high-frequency vibration of the ultrasonic atomization sheet 5, the two mist droplets converge in the Venturi tube 11 after passing through the conveying pipeline 14 under the action of negative pressure formed by the steam mist gel spraying power assembly, the gel after sufficient reaction and mixing is sprayed outwards through the static mixing tube 12 and the H-shaped mixed flow nozzle 13 under the action of negative pressure and the Venturi effect, the spraying distance is 5 m, and the mixed flow nozzle 13 can adjust the angle to change the drifting range of the steam mist gel.

[0054] As shown in Figure 3 Fig. 3(a) is a spraying effect diagram using a traditional atomization device, Figure 3 Fig. 3(b) is an atomization spraying effect diagram using the equipment, it can be seen from the diagram that the atomization particles of the equipment are small and uniformly distributed, can penetrate into the dead angle area which is difficult to reach by traditional spraying, and have large coverage area.

[0055] Example 2

[0056] The use method of the mine gel atomization spraying equipment as described in Example 1 comprises the following steps:

[0057] S1, the steam mist gel injection power assembly is connected to the mine compressed air or high pressure inert gas, the pressure transmitter 9 is adjusted to determine the pressure conversion multiple as 4 times, and the injection pressure is determined as 4 Mpa.

[0058] S2, the gel A and B component solutions are respectively poured into the liquid storage tank 2 from the liquid inlet 1 of the liquid storage tank.

[0059] S3, the liquid level control valve 7 is opened, the gel solutions of different A and B components enter the lower end ultrasonic wave generating assembly through the liquid level control valve 7, the liquid level height reaches the height of the liquid level sensor 6, the ultrasonic atomization sheet 5 starts to work, the frequency of the ultrasonic atomization sheet 5 is adjusted as 10 MHz, the A and B component solutions form mist droplets of about 5 μm after high frequency vibration of the ultrasonic atomization sheet 5, and are transported to the Venturi tube 11 through the atomization channel 14.

[0060] S4, the two mist droplets converge in the static mixing tube 12 under the negative pressure effect of the steam mist gel injection power assembly 10.

[0061] S5, the steam mist gel after sufficient reaction and mixing is sprayed outward through the mixed flow nozzle 13, the spraying distance is 5 m, the mixed flow nozzle 13 can adjust the angle as required to change the drifting range of the steam mist gel.

[0062] S6, after use, clean water is filled to continue to run for 5 minutes to clean the equipment.

[0063] The other places not mentioned are the same as those in example 1.

[0064] Example 3

[0065] The use method of the mine gel atomization spraying equipment as described in example 1 comprises the following steps:

[0066] The steam mist gel atomization spraying equipment is connected to the mine compressed air or high pressure inert gas, the pressure transmitter 9 is adjusted to determine the pressure conversion multiple as 8 times, and the injection pressure is determined as 8 Mpa.

[0067] The frequency of the ultrasonic atomization sheet 5 is adjusted as 40 MHz, and the A and B component solutions form mist droplets of about 2 μm after high frequency vibration of the ultrasonic atomization sheet 5.

[0068] The other places not mentioned are the same as those in example 1.

[0069] Example 4

[0070] The mine gel atomization spraying equipment is provided with one ultrasonic atomization device, and is suitable for use of single component steam mist gel.

[0071] The other places not mentioned are the same as those in example 1.

[0072] Example 3

[0073] A mine gel atomization spraying device, power is provided by a battery assembly. The ultrasonic atomization device is provided with three, suitable for three components of the use of the aerosol gel.

[0074] Other places not mentioned in example 1.

[0075] The present application can also ensure that the atomization effect is basically unchanged after a long time of use. Compared with the prior art, the atomization efficiency of the present application is higher, more convenient and intelligent, the present application solves the problem that the nozzle of the existing atomization spraying device is easy to block by atomizing from the source, and has significant progress significance.

[0076] Of course, the above description is not a limitation on the present application, and the present application is not limited to the above examples, and changes, modifications, additions or replacements made by those skilled in the art within the essential scope of the present application should also belong to the protection scope of the present application.

Claims

1. A mine gel fogging spray apparatus provided with a controller, characterized in that, The ultrasonic atomization device and the spraying device are connected through an atomization channel; The ultrasonic atomization device comprises a liquid storage tank, an ultrasonic wave generating assembly and an intelligent radiator; the intelligent radiator controls the temperature of the ultrasonic wave generating assembly; The spraying device comprises a steam mist gel injection power assembly and a mixed flow spraying assembly; the steam mist gel injection power assembly transports the atomized gel to the mixed flow spraying assembly through a Venturi effect, and the steam mist gel is transported to the coal mine goaf under the driving of gas; The ultrasonic atomization device and the spraying device are both connected to a controller, which controls the start and stop of the ultrasonic atomization device and the spraying device.

2. A mine gel fogging spray device according to claim 1, characterised in that, The ultrasonic atomization device has at least two, and are both connected to the Venturi tube of the spraying device through the atomization channel, and respectively contain different components of the gel, and valves are arranged in the atomization channels.

3. A mine gel fogging spray device according to claim 2, characterised in that, The ultrasonic wave generating assembly comprises an atomization cavity, an ultrasonic wave atomization sheet and a liquid level sensor; the liquid storage tank is connected to the atomization cavity; the ultrasonic wave atomization sheet is located at the bottom of the atomization cavity; the gel is atomized into different particle sizes by adjusting different frequencies; the atomized mist droplets are transported through the atomization channel; the liquid level sensor is installed on the side wall of the atomization cavity and controls the liquid level in the atomization cavity in linkage with the liquid storage tank; the upper portion of the liquid storage tank is provided with a liquid inlet, and the lower end is provided with a liquid level control valve.

4. A mine gel fogging spray device according to claim 3, characterised in that, The intelligent radiator comprises a temperature sensor and a variable frequency fan; the temperature sensor is arranged in the liquid inside the atomization cavity; the variable frequency fan is located at the bottom outside the atomization cavity; when the set temperature is exceeded, the variable frequency fan is started to dissipate heat; when the temperature continues to rise, the cooling is increased by automatically adjusting the frequency and increasing the wind speed.

5. The mine gel fogging spray apparatus of claim 1, wherein, The steam mist gel injection power assembly comprises a flow controller, a pressure transmitter and a Venturi tube; the flow controller and the pressure transmitter are connected to mine pressure air or mobile source high-pressure inert gas, and can provide different injection pressures and distances according to the spraying requirements.

6. A mine gel fogging spray device according to claim 5, characterised in that, The mixed flow spraying assembly comprises a static mixing pipe and an H-shaped mixed flow nozzle, and the two are connected through a hinge; the H-shaped mixed flow nozzle can adjust the direction.

7. A method of using a mine gel fogging spray apparatus as claimed in any one of claims 1 to 6, characterized in that, The method comprises the following steps: S1, connecting the steam mist gel injection power assembly to mine pressure air or high-pressure inert gas, adjusting the pressure transmitter to determine the pressure, and adjusting the flow controller to determine the spraying flow; S2, pouring different component solutions of the gel into the liquid storage tank from the liquid inlet; S3, opening, the liquid level control valve is opened, the gel solutions of different components pass through the liquid level control valve into the lower end ultrasonic wave generating assembly, the liquid level height reaches the height of the liquid level sensor, the ultrasonic wave atomization sheet starts to work, the different component solutions form extremely fine mist droplets after high-frequency vibration of the ultrasonic wave atomization sheet, and the mist droplets are transported to the Venturi tube through the atomization channel; S4, the different component mist droplets converge in the static mixing pipe under the negative pressure formed by the steam mist gel injection power assembly; S5, the mixed gel mist droplets are sprayed outward through the H-shaped mixed flow nozzle, and the mixed flow nozzle can adjust the angle to change the drifting range of the steam mist gel; S6, after use, continue to run for 1-10 minutes by filling clean water to clean the equipment.

8. A method of using a mining gel fogging spray apparatus according to claim 7, characterised in that, When the temperature sensor detects that the temperature of the ultrasonic generating device exceeds 40 DEG C, the controller starts the variable frequency fan to dissipate heat, and when the temperature continues to rise, the wind speed is increased by automatic frequency adjustment to reduce the temperature.

9. A method of using a mining gel fogging spray apparatus according to claim 7, wherein, The atomization frequency range is 20 kHz to 50 MHz, and the gel atomization particle size range is 1 to 10 microns.

10. A method of using a mining gel fogging spray apparatus according to claim 7, wherein, The pressure transmitter can change the pressure of mine pressure air or high-pressure inert gas, the pressure change range is 2 to 10 times, the jet pressure is 1 to 10 Mpa, and the jet distance is 1 to 10 m.

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