Fine bubble wrapping dust suppression system and use method thereof

Abstract

The invention relates to a fine bubble wrapping dust suppression system and a using method thereof, and belongs to the technical field of mine dedusting, the fine bubble wrapping dust suppression system comprises a water storage tank, a high-energy fine bubble generating device, a rotational flow fine bubble strengthening device, a matched fine bubble spraying device and an MCU control system, the water storage tank is used for storing foaming liquid, the high-energy fine bubble generating device is used for generating fine bubbles, and the rotational flow fine bubble strengthening device is used for strengthening the rotational flow fine bubbles; the rotational flow fine bubble strengthening device is used for improving the uniformity of fine bubbles, the fine bubble spraying device is matched to accurately spray the fine bubbles to a dust production source, and the MCU control system can achieve the functions of automatic matching of high-pressure water and high-pressure gas, automatic water replenishing of a water storage tank, water pressure and air pressure monitoring, one-key starting and stopping of equipment and the like. The device is small in size, light in weight, low in cost, convenient to move, high in adaptability, good in wind resistance, easy to operate and capable of achieving automatic control, and can be perfectly suitable for a mining working face with a narrow space while the dust removal efficiency is guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of mine dust removal, and in particular relates to a fine bubble encapsulated dust suppression system and a use method thereof, which are mainly applicable to mining working faces. Background Art

[0002] With the continuous improvement of coal mining intensity and the deepening of mechanization level, the dust generation of the working face has also increased rapidly. Coal mining and tunneling working faces are the main dust-generating places underground. The dust concentration during operation was as high as 1500mg / m 3 The above factors seriously endanger the safe production of coal mines and the physical and mental health of underground workers, and dust control is imminent.

[0003] At present, the spray dust suppression nozzle is easy to be clogged, and the droplets are easy to be reflected back to the rear of the tunnel boring machine with the air supply flow, which greatly increases the discomfort of the workers, and the dust removal efficiency is low, so the driver is reluctant to turn it on. Foam dust suppression technology also has problems such as long defoaming time due to high foaming multiples, blocking the line of sight and causing white pollution, poor wind resistance, difficulty in reaching the coal wall to effectively wrap the coal dust, and increased difficulty in foaming and regulation due to fluctuations in water pressure and wind pressure.

[0004] There is an urgent need to develop a new fine bubble dust removal process and system that has good wind resistance, can adapt to a wide range of wind and water parameters, has adjustable and anti-clogging nozzles, has obvious dust source suppression effects, is easy to control and operate, will not cause secondary pollution to the environment, and can greatly reduce the burden on workers. Summary of the invention

[0005] The purpose of the present invention is to address the shortcomings of existing dust removal technologies, innovatively adopt a new dust suppression idea of ​​"fine bubble-wet bubble" with a particle size between spray and foam, to overcome the pain points of traditional spray dust reduction and foam dust suppression, and to design and manufacture a new fine bubble encapsulated dust suppression system with small size, low cost, easy mobility, strong adaptability, good wind resistance, simple operation, automatic control, and perfect suitability for mining working faces, and a method of using the system.

[0006] The present invention is implemented by the following technical scheme: a fine bubble encapsulated dust suppression system, which comprises: Water storage tank: An opening is arranged on the top surface of the water storage tank, a filter screen is arranged at the position of the opening, a protective cover plate is arranged above the filter screen, the water storage tank is filled with a foaming agent, a immersion liquid level sensor for monitoring the liquid level of the foaming agent is arranged in the water storage tank, and shock-absorbing casters are arranged at the four corners of the bottom surface of the water storage tank; a water replenishment port and a liquid suction port are respectively arranged on the upper part of the side wall of the water storage tank and above the maximum liquid level of the foaming agent, the liquid suction port is connected to the upper end of the liquid suction pipe, and the lower end of the liquid suction pipe passes through the lower part of the side wall of the water storage tank and is connected to the water storage tank; a sewage outlet is arranged on the side wall of the water storage tank near the bottom surface, and a sewage valve is installed on the sewage outlet; High-energy fine bubble generating device: The high-energy fine bubble generating device is fixedly arranged on the right side wall of the water storage tank, and the high-energy fine bubble generating device comprises a box body, and a high-pressure water inlet and a high-pressure air inlet are respectively arranged on the front side wall of the box body, and a manually controlled water inlet valve and an air inlet valve are respectively installed on the high-pressure water inlet and the high-pressure air inlet; a partition is arranged across the middle of the box body, and a liquid supply pipe, an air supply pipe and a fine bubble generating box are arranged in the box body above the partition; the high-pressure water inlet is connected with the head end of the liquid supply pipe, and a first filter is arranged at the head end of the liquid supply pipe; a water replenishing port, a high-pressure explosion-proof electric water inlet valve, a piezoresistive water pressure sensor and an explosion-proof water pressure gauge are arranged on the liquid supply pipe in sequence according to the liquid flow direction. A high-pressure explosion-proof electric water replenishment valve is installed on the water replenishment port. At the same time, only one of the high-pressure explosion-proof electric water replenishment valve and the high-pressure explosion-proof electric water inlet valve is in an open state, and the high-pressure explosion-proof electric water inlet valve is opened first; the tail end of the liquid supply pipe is connected with the head end of the ejector pipe, the tail end of the ejector pipe is connected with the liquid inlet of the fine bubble generating box, and the ejector pipe is connected with the liquid suction port through a three-way connection, and a one-way valve is installed on the liquid suction port; the high-pressure air inlet port is connected with the head end of the gas transmission pipe, a second filter is arranged at the head end of the gas transmission pipe, a high-pressure explosion-proof electric air inlet valve and a piezoresistive air pressure sensor are arranged on the gas transmission pipe in sequence according to the gas flow direction, and the tail end of the gas transmission pipe is connected to the fine bubble generating box. The air inlet of the box is connected, and the liquid and gas are fully mixed in the fine bubble generating box to make bubbles; a mining intrinsically safe battery and an MCU control module are arranged in the box body below the partition, and the MCU control module has built-in IO ports, a DC-DC step-down module and wiring terminals, and the MCU control module and the DC-DC step-down module are electrically connected to the wiring terminals, and the high-pressure explosion-proof electric water supply valve, the high-pressure explosion-proof electric water inlet valve, the high-pressure explosion-proof electric air inlet valve, the piezoresistive water pressure sensor, the piezoresistive air pressure sensor, and the immersion liquid level sensor are electrically connected to the wiring terminals respectively; a box door is hinged on the outer wall of the box body, and a handle, a display screen, an emergency stop button, and a one-button start and stop are arranged on the box door. The button, electric water inlet valve knob, electric air inlet valve knob, electric water supply valve knob and automatic manual switching knob, the display screen, emergency stop button, one-button start-stop button, electric water inlet valve knob, electric air inlet valve knob, electric water supply valve knob and automatic manual switching knob are electrically connected to the wiring terminals respectively; the 24V mining intrinsically safe battery directly powers the high-voltage explosion-proof electric water supply valve, the high-voltage explosion-proof electric water inlet valve, the high-voltage explosion-proof electric air inlet valve and the DC-DC step-down module, and the DC-DC step-down module reduces the voltage to 5V to power the MCU control module, the piezoresistive water pressure sensor, the piezoresistive air pressure sensor and the immersion liquid level sensor; Cyclone fine bubble strengthening device: the cyclone fine bubble strengthening device is fixedly installed on the rear side wall of the water storage tank, the liquid inlet of the cyclone fine bubble strengthening device is connected with the liquid discharge port of the fine bubble generating box, and the liquid outlet of the cyclone fine bubble strengthening device is connected with the liquid inlet of the fine bubble diverter through the high-energy fine bubble delivery main pipe; Fine bubble injection device: The fine bubble injection device includes a fine bubble diverter, a diversion branch pipe, an annular nozzle and an adaptive universal adjustment bracket. Several annular nozzles are connected to the liquid outlet of the fine bubble diverter through corresponding diversion branches, and each annular nozzle is installed on a corresponding adaptive universal adjustment bracket.

[0007] The principle used in the present invention is: on the one hand, high-pressure water enters the system through the high-pressure water inlet, the high-pressure water is filtered out of impurities through the first filter, and then part of the high-pressure water is used to replenish the water tank through the high-pressure explosion-proof electric water replenishment valve, and the remaining high-pressure water is mixed with the foaming agent sucked in by the negative pressure of the ejection pipe in the ejection pipe after passing through the high-pressure explosion-proof electric water inlet valve in the liquid supply pipe, and added together to the fine bubble generating box; on the other hand, high-pressure gas enters the system through the high-pressure air inlet, the high-pressure gas is filtered out of impurities through the second filter, and then connected to the air inlet of the fine bubble generating box through the high-pressure explosion-proof electric air inlet valve, and is fully mixed with the liquid in the fine bubble generating box to generate high-energy fine bubbles; finally, the high-energy fine bubbles are sprayed out from the annular nozzle after passing through the swirl fine bubble strengthening device, the high-energy fine bubble delivery main pipe, and the fine bubble diverter.

[0008] Furthermore, the swirl fine bubble strengthening device includes a hollow tube body, and spiral blades are arranged along the axial direction of the hollow tube body.

[0009] Furthermore, the piezoresistive water pressure sensor, piezoresistive air pressure sensor, immersion liquid level sensor, emergency stop button, one-touch start / stop button, electric water inlet valve knob, electric air inlet valve knob, electric water replenishment valve knob and automatic / manual switching knob are all input modules for sending the collected information to the MCU control module; the high-pressure explosion-proof electric water replenishment valve, high-pressure explosion-proof electric water inlet valve, high-pressure explosion-proof electric air intake valve and display screen are output modules for receiving control instructions from the MCU control module, executing corresponding operations and presenting visual information.

[0010] Furthermore, the high-pressure explosion-proof electric water supply valve and the high-pressure explosion-proof electric water inlet valve are on-and-off electric valves, which only need to realize the on-and-off functions; the high-pressure explosion-proof electric air intake valve is an analog control electric valve, and the control end of the high-pressure explosion-proof electric air intake valve is an analog output signal, which is used to accurately control the valve opening size.

[0011] Furthermore, when the system is in a one-key shutdown state, after the MCU control module receives the one-key start-stop command issued by the one-key start-stop button, it first fully opens the high-pressure explosion-proof electric water inlet valve, and then slowly opens the high-pressure explosion-proof electric air inlet valve. When the explosion-proof water pressure gauge and the explosion-proof air pressure gauge reach the predetermined values ​​respectively, the opening amplitude of the high-pressure explosion-proof electric air inlet valve is kept unchanged; When the system is in the one-button start state, after the MCU control module receives the one-button start-stop command issued by the one-button start-stop button, it first completely closes the high-pressure explosion-proof electric air intake valve, and then completely closes the high-pressure explosion-proof electric water intake valve.

[0012] Furthermore, when the immersion liquid level sensor detects that the liquid level in the water tank is less than a preset value, the immersion liquid level sensor transmits a feedback signal to the MCU control module, and the MCU control module sends an opening control signal to the high-pressure explosion-proof electric water inlet valve to replenish water into the water tank through the water replenishment port; When the immersion liquid level sensor detects that the liquid level in the water tank reaches the threshold, the immersion liquid level sensor transmits a feedback signal to the MCU control module, and the MCU control module sends a closing control signal to the high-pressure explosion-proof electric water inlet valve, and the water replenishment port stops replenishing water to the water tank.

[0013] The method for using the fine bubble encapsulated dust suppression system as described above comprises the following steps: S1. Open the protective cover and add a high-concentration foaming agent into the water tank through the opening; S2. Press the one-button start / stop button, and the MCU control module detects the water level of the foaming agent in the water tank through the immersion liquid level sensor: S2-1. If the feedback signal of the immersion liquid level sensor indicates that the water level of the foaming agent in the water tank is normal, the MCU control module controls the high-pressure explosion-proof electric water inlet valve to be fully opened, and high-pressure water enters the system through the high-pressure water inlet. The high-pressure water is filtered through the first filter to remove impurities, and then a part of the high-pressure water is used to replenish the water tank through the high-pressure explosion-proof electric water replenishment valve, and the other part of the high-pressure water is added to the fine bubble generating box after passing through the high-pressure explosion-proof electric water inlet valve and the ejector pipe in the liquid supply pipe; At the same time, the MCU control module controls the high-pressure explosion-proof electric intake valve to open slowly through analog output, and the high-pressure gas enters the system through the high-pressure intake port. The high-pressure gas passes through the second filter to remove impurities, and then passes through the high-pressure explosion-proof electric intake valve to communicate with the intake port of the fine bubble generating box, and is fully mixed with the liquid in the fine bubble generating box to generate high-energy fine bubbles. S-2. If the feedback signal of the immersion liquid level sensor indicates that the water level of the foaming agent in the water storage tank is lower than the preset value, the high-pressure explosion-proof electric water supply valve is first opened until the water level of the foaming agent meets the preset value, and then the high-pressure explosion-proof electric water supply valve is closed, and step S2-1 is repeated; S3, MCU control module monitors the water pressure and air pressure changes in the liquid supply pipe and the gas supply pipe in real time through the piezoresistive water pressure sensor and the piezoresistive air pressure sensor. When it is monitored that the air pressure does not reach the preset value, the high-pressure explosion-proof electric air intake valve continues to be slowly opened; when it is monitored that the explosion-proof water pressure gauge and the explosion-proof air pressure gauge reach the preset values ​​respectively, the opening amplitude of the high-pressure explosion-proof electric air intake valve is kept unchanged; S4. The negative pressure generated in the ejector tube sucks the foaming agent in the water storage tank into the fine bubble generating box. At the same time, high-pressure water and high-pressure gas are input into the fine bubble generating box through the liquid supply pipe and the gas supply pipe. The high-pressure water, high-pressure gas and foaming agent are fully mixed and foamed in the fine bubble generating box and the cyclone fine bubble strengthening device. Finally, the fine bubble foaming agent is ejected from the annular nozzle through a plurality of branch pipes through the fine bubble diverter. S5. After use, press the one-touch start-stop button to close the high-pressure explosion-proof electric air inlet valve and the high-pressure explosion-proof electric water inlet valve in turn, and prepare for the next use.

[0014] Compared with the prior art, the present invention has the following beneficial effects: the present invention is small in size, light in weight, low in cost, easy to move, highly adaptable, has good wind resistance, is easy to operate, and can realize automatic control. It is a new type of fine foam encapsulated dust suppression system that is perfectly suitable for mining working faces. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a diagram showing the internal structure of the high energy fine bubble generating device of the present invention; Figure 3 This is a structural diagram of the external control system of the high-energy fine bubble generating device of the present invention; Figure 4 This is a diagram showing the internal structure of the swirl fine bubble strengthening device of the present invention; Figure 5 It is a structural block diagram of the MCU control system of the present invention.

[0016] In the figure, 1-high-pressure water inlet, 2-high-pressure air inlet, 3-box, 4-handle, 5-swirl fine bubble strengthening device, 6-explosion-proof water pressure gauge, 7-explosion-proof air pressure gauge, 8-water supply port, 9-liquid suction port, 10-drain port, 11-water inlet valve, 12-air inlet valve, 13-drain valve, 14-water storage tank, 15-protective cover, 16-filter screen, 17-immersion liquid level sensor, 18-high-energy fine bubble delivery main pipe, 19-fine bubble diverter, 20-diverter branch pipe, 21-annular nozzle, 22-adaptive universal adjustment bracket, 23-shock-absorbing casters, 24-1, first filter, 24-2, second filter, 25 -High-pressure explosion-proof electric water supply valve, 26-High-pressure explosion-proof electric water inlet valve, 27-High-pressure explosion-proof electric air inlet valve, 28-Piezoresistive water pressure sensor, 29-Piezoresistive air pressure sensor, 30-One-way valve, 31-Ejector tube, 32-Fine bubble generator box, 33-Intrinsically safe battery for mining, 34-MCU control module, 35-DC-DC step-down module, 36-Terminal block, 37-Display screen, 38-Emergency stop button, 39-One-button start and stop button, 40-Electric water inlet valve knob, 41-Electric air inlet valve knob, 42-Electric water supply valve knob, 43-Automatic-manual switching knob, 44-Suction tube, 45-Partition. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0018] like Figures 1 to 5 A fine bubble dust suppression system is shown, which comprises: Water storage tank 14: An opening is arranged on the top surface of the water storage tank 14 for adding high-concentration foaming agent, a filter screen 16 is arranged at the opening position, a protective cover plate 15 is arranged above the filter screen 16, the water storage tank 14 is filled with foaming agent, a immersion liquid level sensor 17 for monitoring the liquid level of the foaming agent is arranged in the water storage tank 14, and shock-absorbing casters 23 are arranged at the four corners of the bottom surface of the water storage tank 14; a water replenishment port 8 and a liquid suction port 9 are respectively arranged on the upper part of the side wall of the water storage tank 14 and above the maximum liquid level position of the foaming agent, and the water replenishment function is realized through the side water replenishment port 8 to dilute the foaming agent, the liquid suction port 9 is connected to the upper end of the liquid suction pipe 44, and the lower end of the liquid suction pipe 44 passes through the lower part of the side wall of the water storage tank 14 and is connected to the water storage tank 14; a sewage outlet 10 is arranged on the side wall of the water storage tank 14 near the bottom surface, and a sewage valve 13 is installed on the sewage outlet 10; High-energy fine bubble generating device: The high-energy fine bubble generating device is fixedly arranged on the right side wall of the water storage tank 14, and the high-energy fine bubble generating device comprises a box body 3, and a high-pressure water inlet 1 and a high-pressure air inlet 2 are respectively arranged on the front side wall of the box body 3, and a manually controlled water inlet valve 11 and an air inlet valve 12 are respectively installed on the high-pressure water inlet 1 and the high-pressure air inlet 2; a partition 45 is arranged across the middle of the box body 3, and a liquid supply pipe, an air supply pipe and a fine bubble generating box 32 are arranged in the box body 3 above the partition 45, the high-pressure water inlet 1 is connected to the head end of the liquid supply pipe, and a first filter 24-1 is arranged at the head end of the liquid supply pipe, and a water replenishment port 8, a high-pressure explosion-proof electric water inlet valve 26, a piezoresistive water pressure sensor 28 and an explosion-proof water pressure sensor 29 are arranged on the liquid supply pipe in sequence according to the direction of liquid flow. Table 6, a high-pressure explosion-proof electric water replenishment valve 25 is installed on the water replenishment port 8, and the high-pressure explosion-proof electric water replenishment valve 25 and the high-pressure explosion-proof electric water inlet valve 26 need to realize an interlocking function. At the same time, only one of the high-pressure explosion-proof electric water replenishment valve 25 and the high-pressure explosion-proof electric water inlet valve 26 is in an open state, and the high-pressure explosion-proof electric water inlet valve 26 is opened first; the tail end of the liquid supply pipe is connected with the head end of the ejector pipe 31, the tail end of the ejector pipe 31 is connected with the liquid inlet of the fine bubble generating box 32, and the ejector pipe 31 is connected with the liquid suction port 9 through a tee, and a one-way valve 30 is installed on the liquid suction port 9. The water flow direction of the one-way valve 30 is from the water storage tank 14 to the ejector pipe 31; the high-pressure air inlet 2 is connected with the head end of the gas transmission pipe, and a first The second filter 24-2, a high-pressure explosion-proof electric air intake valve 27 and a piezoresistive air pressure sensor 29 are arranged on the air supply pipe in sequence according to the gas flow direction, the tail end of the air supply pipe is connected to the air inlet of the fine bubble generating box 32, and the liquid and the gas are fully mixed in the fine bubble generating box 32 to make bubbles; a mining intrinsically safe battery 33 and an MCU control module 34 are arranged in the box body 3 below the partition 45, the MCU control module 34 has a built-in IO port, a DC-DC step-down module 35 and a wiring terminal 36, the MCU control module 34 and the DC-DC step-down module 35 are electrically connected to the wiring terminal 36, the high-pressure explosion-proof electric water supply valve 25, the high-pressure explosion-proof electric water inlet valve 26, the high-pressure explosion-proof electric air intake valve 27, the piezoresistive water pressure sensor 28, the piezoresistive The air pressure sensor 29 and the immersion liquid level sensor 17 are electrically connected to the wiring terminal 36 respectively; a box door is hinged on the outer wall of the box body 3, and a handle 4, a display screen 37, an emergency stop button 38, a one-button start-stop button 39, an electric water inlet valve knob 40, an electric air inlet valve knob 41, an electric water supply valve knob 42 and an automatic manual switching knob 43 are arranged on the box door; the display screen 37, the emergency stop button 38, the one-button start-stop button 39, the electric water inlet valve knob 40, the electric air inlet valve knob 41, the electric water supply valve knob 42 and the automatic manual switching knob 43 are electrically connected to the wiring terminal 36 respectively; after the manual switching knob 43 is turned on, the system can be manually controlled through the water inlet valve 11 and the air inlet valve 12 in the absence of power supply;The 24V mining intrinsically safe battery 33 directly supplies power to the high-pressure explosion-proof electric water supply valve 25, the high-pressure explosion-proof electric water inlet valve 26, the high-pressure explosion-proof electric air inlet valve 27 and the DC-DC step-down module 35, and the DC-DC step-down module 35 reduces the voltage to 5V to supply power to the MCU control module 34, the piezoresistive water pressure sensor 28, the piezoresistive air pressure sensor 29 and the immersion liquid level sensor 17; Cyclone fine bubble strengthening device 5: the cyclone fine bubble strengthening device 5 is fixedly mounted on the rear side wall of the water storage tank 14, and comprises a hollow tube body, and spiral blades are arranged along the axial direction of the hollow tube body; the liquid inlet of the cyclone fine bubble strengthening device 5 is connected with the liquid discharge port of the fine bubble generating box 32, and the liquid outlet of the cyclone fine bubble strengthening device 5 is connected with the liquid inlet of the fine bubble diverter 19 through the high-energy fine bubble delivery main pipe 18; Fine bubble injection device: The fine bubble injection device includes a fine bubble diverter 19, a diversion branch pipe 20, an annular nozzle 21 and an adaptive universal adjustment bracket 22. Several annular nozzles 21 are connected to the liquid outlet of the fine bubble diverter 19 through corresponding diversion branches 20, and each annular nozzle 21 is installed on a corresponding adaptive universal adjustment bracket 22. The adaptive universal adjustment bracket 22 is provided with a universal wheel that can realize multi-angle adjustment.

[0019] Furthermore, the piezoresistive water pressure sensor 28, piezoresistive air pressure sensor 29, immersion liquid level sensor 17, emergency stop button 38, one-touch start / stop button 39, electric water inlet valve knob 40, electric air inlet valve knob 41, electric water replenishment valve knob 42 and automatic-manual switching knob 43 are all input modules, used to send the collected information to the MCU control module; the high-pressure explosion-proof electric water replenishment valve 25, high-pressure explosion-proof electric water inlet valve 26, high-pressure explosion-proof electric air intake valve 27 and display screen 37 are output modules, used to receive control instructions from the MCU control module 34 and execute corresponding operations and present visual information.

[0020] Furthermore, the high-pressure explosion-proof electric water supply valve 25 and the high-pressure explosion-proof electric water inlet valve 26 are on-and-off electric valves, which only need to realize the on-and-off functions; the high-pressure explosion-proof electric air intake valve 27 is an analog control electric valve, and the control end of the high-pressure explosion-proof electric air intake valve 27 is an analog output signal, which is used to accurately control the valve opening size.

[0021] Furthermore, when the system is in a one-key shutdown state, after the MCU control module 34 receives the one-key start-stop command issued by the one-key start-stop button 39, it first fully opens the high-pressure explosion-proof electric water inlet valve 26, and then slowly opens the high-pressure explosion-proof electric air inlet valve 27. When the explosion-proof water pressure gauge 6 and the explosion-proof air pressure gauge 7 reach the predetermined values ​​respectively, the opening amplitude of the high-pressure explosion-proof electric air inlet valve 27 is kept unchanged; When the system is in the one-key start state, after the MCU control module 34 receives the one-key start-stop command issued by the one-key start-stop button 39, it first completely closes the high-pressure explosion-proof electric air intake valve 27 and then completely closes the high-pressure explosion-proof electric water intake valve 26.

[0022] Further, when the submersible liquid level sensor 17 detects that the liquid level in the water storage tank 14 is less than a predetermined value, the submersible liquid level sensor 17 transmits a feedback signal to the MCU control module 34, and the MCU control module 34 sends an opening control signal to the high-pressure explosion-proof electric water inlet valve 26 to replenish water into the water storage tank 14 through the water replenishment port 8; When the immersion liquid level sensor 17 detects that the liquid level in the water tank 14 reaches a threshold value, the immersion liquid level sensor 17 transmits a feedback signal to the MCU control module 34 , and the MCU control module 34 sends a closing control signal to the high-pressure explosion-proof electric water inlet valve 26 , and the water replenishment port 8 stops replenishing water to the water tank 14 .

[0023] The method for using the fine bubble encapsulated dust suppression system as described above comprises the following steps: S1, open the protective cover 15, and add a high-concentration foaming agent into the water storage tank 14 through the opening; S2. After the tunneling machine / coal mining machine is turned on, the one-touch start / stop button 39 is pressed, and the MCU control module 34 detects the water level of the foaming agent in the water storage tank 14 through the immersion liquid level sensor 17: S2-1, if the feedback signal of the immersion liquid level sensor 17 indicates that the water level of the foaming agent in the water storage tank 14 is normal, the MCU control module 34 controls the high-pressure explosion-proof electric water inlet valve 26 to be fully opened, and high-pressure water enters the system through the high-pressure water inlet 1, and the high-pressure water is filtered out of impurities through the first filter 24-1, and then a part of the high-pressure water is used to replenish the water storage tank 14 through the high-pressure explosion-proof electric water replenishment valve 25, and the other part of the high-pressure water is added to the fine bubble generating box 32 after passing through the high-pressure explosion-proof electric water inlet valve 26 and the ejector tube 31 in the liquid supply pipe; At the same time, the MCU control module 34 controls the high-pressure explosion-proof electric air intake valve 27 to slowly open through analog output, and the high-pressure gas enters the system through the high-pressure air intake port 2. The high-pressure gas passes through the second filter 24-2 to filter out impurities, and then passes through the high-pressure explosion-proof electric air intake valve 27 to communicate with the air intake port of the fine bubble generating box 32, and is fully mixed with the liquid in the fine bubble generating box 32 to generate high-energy fine bubbles. S2-2, if the feedback signal of the immersion liquid level sensor 17 indicates that the water level of the foaming agent in the water storage tank 14 is lower than the preset value, the high-pressure explosion-proof electric water supply valve 25 is first opened until the water level of the foaming agent meets the preset value, and then the high-pressure explosion-proof electric water supply valve 25 is closed, and step S2-1 is repeated; S3, the MCU control module 34 monitors the water pressure and air pressure changes in the liquid supply pipe and the gas supply pipe in real time through the piezoresistive water pressure sensor 28 and the piezoresistive air pressure sensor 29. When it is monitored that the air pressure does not reach the preset value, the high-pressure explosion-proof electric air intake valve 27 continues to be slowly opened; when it is monitored that the explosion-proof water pressure gauge 6 and the explosion-proof air pressure gauge 7 reach the preset values ​​respectively, the opening amplitude of the high-pressure explosion-proof electric air intake valve 27 is kept unchanged; S4, the negative pressure generated in the ejector tube 31 sucks the foaming agent in the water storage tank 14 into the fine bubble generating box 32, and at the same time, high-pressure water and high-pressure gas are input into the fine bubble generating box 32 through the liquid supply pipe and the gas supply pipe, and the high-pressure water, high-pressure gas and foaming agent are fully mixed and foamed in the fine bubble generating box 32 and the cyclonic fine bubble strengthening device 5, and finally the fine bubble foaming agent is sprayed out from the annular nozzle 21 through the fine bubble diverter 19 through a plurality of branch pipes 20; S5. After use, press the one-touch start-stop button 39 to close the high-pressure explosion-proof electric air inlet valve 27 and the high-pressure explosion-proof electric water inlet valve 26 in sequence, and prepare for the next use.

[0024] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A fine bubble dust suppression system, characterized in that: It includes: A water storage tank (14): an opening is arranged on the top surface of the water storage tank (14), a filter screen (16) is arranged at the position of the opening, a protective cover plate (15) is arranged above the filter screen (16), a foaming agent is filled in the water storage tank (14), a drop-in liquid level sensor (17) for monitoring the liquid level of the foaming agent is arranged in the water storage tank (14), and shock-absorbing casters (23) are arranged at the four corners of the bottom surface of the water storage tank (14); a water replenishment port (8) and a liquid suction port (9) are respectively arranged at the upper part of the side wall of the water storage tank (14) and above the maximum liquid level of the foaming agent, the liquid suction port (9) is connected to the upper end of the liquid suction pipe (44), and the lower end of the liquid suction pipe (44) passes through the lower part of the side wall of the water storage tank (14) and is connected to the water storage tank (14); a sewage outlet (10) is arranged on the side wall of the water storage tank (14) near the bottom surface, and a sewage valve (13) is installed on the sewage outlet (10); A high-energy fine bubble generating device: The high-energy fine bubble generating device is fixedly arranged on the right side wall of the water storage tank (14), and comprises a box body (3). A high-pressure water inlet (1) and a high-pressure air inlet (2) are respectively arranged on the front side wall of the box body (3), and a manually controlled water inlet valve (11) and an air inlet valve (12) are respectively installed on the high-pressure water inlet (1) and the high-pressure air inlet (2); a partition (45) is arranged across the middle of the box body (3), and a liquid supply pipe, an air supply pipe and a fine bubble generating box (32) are arranged in the box body (3) above the partition (45); the high-pressure water inlet (1) is connected to the head end of the liquid supply pipe, A first filter (24-1) is arranged at the head end of the liquid supply pipe, and a water supply port (8), a high-pressure explosion-proof electric water inlet valve (26), a piezoresistive water pressure sensor (28) and an explosion-proof water pressure gauge (6) are arranged on the liquid supply pipe in sequence according to the liquid flow direction. A high-pressure explosion-proof electric water supply valve (25) is installed on the water supply port (8). At the same time, only one of the high-pressure explosion-proof electric water supply valve (25) and the high-pressure explosion-proof electric water inlet valve (26) is in an open state, and the high-pressure explosion-proof electric water inlet valve (26) is opened first. The tail end of the liquid supply pipe is connected to the head end of the ejector pipe (31), and the tail end of the ejector pipe (31) is connected to the fine bubble The liquid inlet of the generating box (32) is connected, and the ejector tube (31) is connected to the liquid suction port (9) through a tee, and a one-way valve (30) is installed on the liquid suction port (9); the high-pressure air inlet (2) is connected to the head end of the air supply pipe, and a second filter (24-2) is arranged at the head end of the air supply pipe. A high-pressure explosion-proof electric air inlet valve (27) and a piezoresistive air pressure sensor (29) are arranged on the air supply pipe in sequence according to the gas flow direction. The tail end of the air supply pipe is connected to the air inlet of the fine bubble generating box (32), and the liquid and the gas are fully mixed in the fine bubble generating box (32) to produce bubbles; the box body (3) below the partition (45) A mining intrinsically safe battery (33) and an MCU control module (34) are provided in the MCU control module (34); an IO port, a DC-DC step-down module (35) and a wiring terminal (36) are built in the MCU control module (34); the MCU control module (34) and the DC-DC step-down module (35) are electrically connected to the wiring terminal (36); and the high-pressure explosion-proof electric water supply valve (25), the high-pressure explosion-proof electric water inlet valve (26), the high-pressure explosion-proof electric air inlet valve (27), the piezoresistive water pressure sensor (28), the piezoresistive air pressure sensor (29), and the immersion type liquid level sensor (17) are electrically connected to the wiring terminal (36) respectively;A box door is hinged on the outer wall of the box body (3), and a handle (4), a display screen (37), an emergency stop button (38), a one-touch start-stop button (39), an electric water inlet valve knob (40), an electric air inlet valve knob (41), an electric water supply valve knob (42), and an automatic-manual switching knob (43) are arranged on the box door. The knobs (43) are electrically connected to the wiring terminals (36) respectively; the 24V mining intrinsically safe battery (33) directly supplies power to the high-pressure explosion-proof electric water supply valve (25), the high-pressure explosion-proof electric water inlet valve (26), the high-pressure explosion-proof electric air inlet valve (27) and the DC-DC step-down module (35); and the DC-DC step-down module (35) reduces the voltage to 5V to supply power to the MCU control module (34), the piezoresistive water pressure sensor (28), the piezoresistive air pressure sensor (29) and the immersion liquid level sensor (17); A cyclone fine bubble strengthening device (5): the cyclone fine bubble strengthening device (5) is fixedly mounted on the rear side wall of the water storage tank (14); the liquid inlet of the cyclone fine bubble strengthening device (5) is connected to the liquid discharge port of the fine bubble generating tank (32); the liquid outlet of the cyclone fine bubble strengthening device (5) is connected to the liquid inlet of the fine bubble diverter (19) via a high-energy fine bubble transport main pipe (18); Fine bubble injection device: The fine bubble injection device comprises a fine bubble diverter (19), a diverter branch pipe (20), an annular nozzle (21) and an adaptive universal adjustment bracket (22), wherein a plurality of annular nozzles (21) are connected to a liquid outlet of the fine bubble diverter (19) through corresponding diverter branches (20), and each annular nozzle (21) is mounted on a corresponding adaptive universal adjustment bracket (22).

2. A fine bubble dust suppression system according to claim 1, characterized in that: The swirl fine bubble strengthening device (5) comprises a hollow tube body, and spiral blades are arranged along the axial direction of the hollow tube body.

3. A fine bubble dust suppression system according to claim 1, characterized in that: The piezoresistive water pressure sensor (28), the piezoresistive air pressure sensor (29), the immersion liquid level sensor (17), the emergency stop button (38), the one-touch start / stop button (39), the electric water inlet valve knob (40), the electric air inlet valve knob (41), the electric water supply valve knob (42), and the automatic / manual switching knob (43) are all input modules, used to send the collected information to the MCU control module; the high-pressure explosion-proof electric water supply valve (25), the high-pressure explosion-proof electric water inlet valve (26), the high-pressure explosion-proof electric air inlet valve (27), and the display screen (37) are output modules, used to receive control instructions from the MCU control module (34), execute corresponding operations, and present visual information.

4. A fine bubble dust suppression system according to claim 1, characterized in that: The high-pressure explosion-proof electric water supply valve (25) and the high-pressure explosion-proof electric water inlet valve (26) are on-off type electric valves; the high-pressure explosion-proof electric air inlet valve (27) is an analog control electric valve, and the control end of the high-pressure explosion-proof electric air inlet valve (27) is an analog output signal.

5. The fine bubble dust suppression system according to claim 1 is characterized in that: When the system is in a one-key shutdown state, after the MCU control module (34) receives a one-key start-stop command from the one-key start-stop button (39), it first fully opens the high-pressure explosion-proof electric water inlet valve (26), and then slowly opens the high-pressure explosion-proof electric air inlet valve (27); when the explosion-proof water pressure gauge (6) and the explosion-proof air pressure gauge (7) respectively reach predetermined values, the opening amplitude of the high-pressure explosion-proof electric air inlet valve (27) is kept unchanged; When the system is in the one-key start state, after the MCU control module (34) receives the one-key start-stop command issued by the one-key start-stop button (39), it first completely closes the high-pressure explosion-proof electric air inlet valve (27) and then completely closes the high-pressure explosion-proof electric water inlet valve (26).

6. The fine bubble encapsulation dust suppression system according to claim 1 is characterized in that: When the immersion liquid level sensor (17) detects that the liquid level in the water storage tank (14) is less than a predetermined value, the immersion liquid level sensor (17) transmits a feedback signal to the MCU control module (34), and the MCU control module (34) sends an opening control signal to the high-pressure explosion-proof electric water inlet valve (26), thereby replenishing water into the water storage tank (14) through the water replenishment port (8); When the immersion liquid level sensor (17) detects that the liquid level in the water storage tank (14) reaches a threshold value, the immersion liquid level sensor (17) transmits a feedback signal to the MCU control module (34), and the MCU control module (34) sends a closing control signal to the high-pressure explosion-proof electric water inlet valve (26), and the water supply port (8) stops supplying water to the water storage tank (14).

7. The method for using the fine bubble encapsulated dust suppression system according to claim 1, characterized in that: The following steps are involved: S1, opening the protective cover (15), and adding a high-concentration foaming agent into the water storage tank (14) through the opening; S2. Press the one-touch start / stop button (39), and the MCU control module (34) detects the water level of the foaming agent in the water storage tank (14) through the immersion liquid level sensor (17): S2-1, if the feedback signal of the immersion liquid level sensor (17) indicates that the water level of the foaming agent in the water storage tank (14) is normal, the MCU control module (34) controls the high-pressure explosion-proof electric water inlet valve (26) to be fully opened, and high-pressure water enters the system through the high-pressure water inlet (1). The high-pressure water is filtered through the first filter (24-1) to remove impurities, and then a part of the high-pressure water is used to replenish the water storage tank (14) through the high-pressure explosion-proof electric water replenishment valve (25), and the other part of the high-pressure water is added to the fine bubble generating box (32) after passing through the high-pressure explosion-proof electric water inlet valve (26) and the ejector tube (31) in the liquid supply pipe; At the same time, the MCU control module (34) controls the high-pressure explosion-proof electric air intake valve (27) to slowly open through analog output, and the high-pressure gas enters the system through the high-pressure air intake port (2). The high-pressure gas passes through the second filter (24-2) to filter out impurities, and then passes through the high-pressure explosion-proof electric air intake valve (27) to communicate with the air intake port of the fine bubble generating box (32), and is fully mixed with the liquid in the fine bubble generating box (32) to generate high-energy fine bubbles. S2-2, if the feedback signal from the immersion liquid level sensor (17) indicates that the water level of the foaming agent in the water storage tank (14) is lower than the preset value, first open the high-pressure explosion-proof electric water supply valve (25) until the water level of the foaming agent meets the preset value, then close the high-pressure explosion-proof electric water supply valve (25), and repeat step S2-1; S3, the MCU control module (34) monitors the water pressure and air pressure changes in the liquid supply pipe and the air supply pipe in real time through the piezoresistive water pressure sensor (28) and the piezoresistive air pressure sensor (29); when it is detected that the air pressure does not reach the predetermined value, the high-pressure explosion-proof electric air intake valve (27) continues to be slowly opened; when it is detected that the explosion-proof water pressure gauge (6) and the explosion-proof air pressure gauge (7) have reached the predetermined values ​​respectively, the opening amplitude of the high-pressure explosion-proof electric air intake valve (27) is kept unchanged; S4, the negative pressure generated in the ejector tube (31) sucks the foaming agent in the water storage tank (14) into the fine bubble generating box (32), and at the same time, high-pressure water and high-pressure gas are input into the fine bubble generating box (32) through the liquid supply pipe and the gas supply pipe. The high-pressure water, high-pressure gas and the foaming agent are fully mixed and foamed in the fine bubble generating box (32) and the cyclonic fine bubble strengthening device (5), and finally the fine bubble foaming agent is ejected from the annular nozzle (21) through the fine bubble diverter (19) through a plurality of diverter branches (20); S5. After use, press the one-touch start-stop button (39) to close the high-pressure explosion-proof electric air inlet valve (27) and the high-pressure explosion-proof electric water inlet valve (26) in sequence, preparing for the next use.

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