Device and method for quickly eliminating instantaneous smoke and dust in underground coal mine blasting operation space

Abstract

The present invention provides a device for quickly eliminating instantaneous smoke and dust in underground blasting operation space of coal mines and a method for using the device. The device includes underground compressed air pipeline, negative pressure ejection device, multi-stage negative pressure dust suction device and high pressure wet spray device. First, high pressure gas enters the negative pressure ejection device, and a high negative pressure environment is formed in the negative pressure ejection chamber; the negative pressure power is used to roll up the smoke and dust through the multi-stage negative pressure dust suction device, and separation is implemented; the smoke after dust removal is mixed with high pressure gas and enters the high pressure wet spray device, and the toxic and harmful smoke is absorbed by the organic active agent, and the wet gas formed by the combination of clean gas and organic active agent is sprayed into the underground blasting operation space to implement further dust removal. The device in the present invention is small in size, easy to move, simple to operate, can realize industrialized production, and has strong on-site practicality; the present invention has the multi-stage linkage smoke and dust elimination functions of negative pressure absorbing dust, organic active agent dissolving smoke and high pressure humidification and dust reduction, high efficiency, good effect, and low cost and fast speed effective treatment.

Description

Technical Field

[0001] The invention belongs to the technical field of smoke treatment, and in particular relates to a device for quickly eliminating instantaneous smoke in a blasting operation space in an underground coal mine and a method for using the device. Background Art

[0002] Coal mining work underground inevitably requires the use of explosives or other blasting materials. When blasting is carried out, a large amount of thick toxic and harmful smoke and dust will be instantly generated, such as carbon monoxide, nitrogen dioxide, nitrogen trioxide, sulfur dioxide, hydrogen sulfide, ammonia and respiratory dust, the concentration of which is much greater than the concentration of smoke and dust produced by mechanical working faces. High concentrations of smoke and dust will not only threaten the safe production of mines, but also induce a variety of occupational diseases that endanger the health of miners, such as the lungs, cardiovascular and brain. By the end of 2018, my country had reported a total of 975,000 cases of occupational diseases, of which 873,000 were occupational pneumoconiosis, accounting for about 90% of the total number of reported occupational disease cases, and coal miners' pneumoconiosis accounted for more than 50% of the total number of pneumoconiosis cases. The prevention and control of occupational hazards of smoke and dust in coal mines is very severe.

[0003] At present, the basic concept of classified dust control is adopted in underground coal mines, and no comprehensive control technology has been formed, which poses the possibility of secondary hazards. Among them, the tunnel smoke control is mainly based on ventilation dissipation, which uses the fresh air flow underground to bring the smoke in the working space into the ventilation system, and flows to the outside along the inlet and return air tunnels, and finally discharges to the ground atmosphere. During the ventilation air flow transmission process, harmful gases pass through multiple ventilation tunnels. When the wind flow does not dilute the concentration of toxic and harmful gases to below the safety standards specified in the "Coal Mine Safety Regulations", the workers in the downwind will breathe toxic and harmful smoke step by step. If this continues, it will inevitably endanger the health of miners and induce many cardiovascular, brain and other diseases. Compared with underground smoke pollution, coal dust is more harmful. At the moment of blasting, thick coal dust permeates the limited space, and the concentration of respirable dust smaller than 5μm is as high as 300mg / m 3 The above is more than 100 times higher than the standard. In addition, coal dust with explosive tendencies can also cause coal dust explosions in certain confined spaces. After the blasting operation, spraying and capturing are the two main means of dust reduction. Spraying dust reduction uses a high-pressure water pump to atomize the liquid. The atomized gas holds the dust and relies on the gravity of the liquid to settle. After a period of time, the water on the surface of the dust evaporates, and the dust may be raised again. This method involves complex and dangerous links such as underground electricity use and explosion-proof machinery and equipment, and the process is complex; capturing dust is to use a gas negative pressure extraction system or a small movable electric extraction pump to forcefully absorb floating dust. During underground application, dust entering the negative pressure extraction system will not only increase the pipeline negative pressure loss and affect the gas extraction efficiency, but also endanger the performance of the extraction pipeline system; small movable electric extraction pumps also require underground power supply, which is complex to operate and has low safety.

[0004] Therefore, it is necessary to provide an improved technical solution to address the deficiencies in the above-mentioned prior art. Summary of the invention

[0005] The purpose of the present invention is to provide a device and a method for quickly eliminating instantaneous smoke and dust in the underground blasting operation space of a coal mine, so as to overcome the problems of downwind air pollution caused by the use of ventilation systems to control toxic and harmful smoke and the secondary hazards of workers repeatedly breathing smoke in the above-mentioned prior art, as well as the secondary dusting, complicated operation of electromechanical equipment and dangerous electricity use caused by technologies such as using high-pressure water pumps to spray dust reduction and negative pressure systems to capture dust.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A device for rapidly eliminating instantaneous smoke and dust in underground blasting operation space of a coal mine, comprising an underground compressed air pipeline, and also comprising:

[0008] A negative pressure ejection device, the negative pressure ejection device comprising a negative pressure ejection chamber, one side of the negative pressure ejection chamber is connected to an air inlet unit, and the other side is connected to an air outlet unit; a negative pressure air suction port is provided at the bottom of the negative pressure ejection chamber, and the negative pressure air suction port is connected to the negative pressure ejection chamber; the air inlet unit is connected to the downhole compressed air pipeline; the downhole compressed air pipeline outputs high-pressure gas to the negative pressure ejection chamber through the air inlet unit;

[0009] A multi-stage negative pressure dust suction device, wherein a multi-stage dust suction device interface is provided on one side of the multi-stage negative pressure dust suction device, and the multi-stage dust suction device interface is connected to the negative pressure suction port; a negative pressure capture unit is provided on the other side of the multi-stage negative pressure dust suction device, and the negative pressure capture unit is used to suck toxic and harmful smoke and dust into the multi-stage negative pressure dust suction device; a plurality of dust filter cores are arranged at intervals in the multi-stage negative pressure dust suction device, and the dust filter cores are used to intercept dust;

[0010] A high-pressure spraying device, wherein a liquid injection port and a mixed high-pressure smoke interface are arranged on the side wall of the high-pressure spraying device, wherein the mixed high-pressure smoke interface is connected with the negative pressure injection cavity through the air outlet unit; an organic active agent is arranged in the high-pressure spraying device, wherein the organic active agent is a liquid and is used to absorb toxic and harmful smoke; a plurality of airflow spraying ports are evenly arranged on the top of the high-pressure spraying device, wherein the airflow spraying ports are used to spray wet gas into the underground blasting operation space.

[0011] In the above-mentioned device for rapidly eliminating instantaneous smoke and dust in underground blasting operation space of coal mine, as a preferred solution, the air intake unit is connected to the underground compressed air pipeline through a first hose; the multi-stage dust suction device interface is connected to the negative pressure air intake port through a second hose; the mixed high-pressure smoke interface is connected to the air outlet unit through a third hose;

[0012] Preferably, the first hose, the second hose and the third hose are all high-pressure flexible hoses.

[0013] In the above-mentioned device for rapidly eliminating instantaneous smoke and dust in underground coal mine blasting operation space, as a preferred solution, a wind pressure regulating valve and a pressure gauge are provided on the first rubber hose, and the wind pressure regulating valve regulates the pressure of the high-pressure gas in the negative pressure injection chamber according to the indication of the pressure gauge;

[0014] Preferably, the pressure of the high-pressure gas is 0.3-0.8 MPa.

[0015] In the instantaneous smoke and dust rapid elimination device for underground blasting operation space of coal mine as described above, as a preferred solution, one end of the air intake unit is provided with an ejection chamber air intake interface, the ejection chamber air intake interface is located outside the negative pressure ejection chamber, and the ejection chamber air intake interface is connected to the first rubber hose; the other end of the air intake unit is provided with an ejection chamber inlet, the ejection chamber inlet is located inside the negative pressure ejection chamber; an air intake hole is provided between the ejection chamber inlet and the ejection chamber air intake interface;

[0016] Preferably, the cross-sectional area of ​​the inlet of the injection chamber is smaller than the cross-sectional area of ​​the air inlet interface of the injection chamber.

[0017] In the instantaneous smoke and dust rapid elimination device for underground blasting operation space of coal mine as described above, as a preferred solution, one end of the gas outlet unit is provided with an ejection cavity gas outlet interface, the ejection cavity gas outlet interface is located outside the negative pressure ejection cavity, and the ejection cavity gas outlet interface is connected to the third rubber hose; the other end of the gas outlet unit is provided with an ejection cavity outlet, the ejection cavity outlet is located inside the negative pressure ejection cavity; an air outlet hole is provided between the ejection cavity outlet and the ejection cavity gas outlet interface;

[0018] Preferably, the cross-sectional area of ​​the air outlet interface of the injection chamber is larger than the cross-sectional area of ​​the outlet of the injection chamber; and the cross-sectional area of ​​the outlet of the injection chamber is larger than the cross-sectional area of ​​the inlet of the injection chamber.

[0019] In the above-mentioned device for rapidly eliminating instantaneous smoke and dust in underground coal mine blasting operation space, as a preferred solution, a card slot is provided inside the multi-stage negative pressure dust suction device, and the dust filter core is fixed inside the multi-stage negative pressure dust suction device through the card slot to absorb dust; along the direction from the interface of the multi-stage dust suction device to the negative pressure capture unit, the filter hole diameter of the dust filter core increases successively;

[0020] Preferably, the dust filter core is provided with three paths, which are respectively a primary dust filter core, a secondary dust filter core and a tertiary dust filter core along the direction from the interface of the multi-stage dust collection device to the negative pressure capture unit;

[0021] More preferably, the filter pore diameter of the primary dust filter core is 1 μm; the filter pore diameter of the secondary dust filter core is 5 μm; and the filter pore diameter of the tertiary dust filter core is 10 μm.

[0022] In the device for rapidly eliminating instantaneous smoke and dust in the underground blasting operation space of a coal mine as described above, as a preferred embodiment, the negative pressure capture unit is trumpet-shaped, and a negative pressure capture cavity is provided inside the negative pressure capture unit. The negative pressure capture cavity is connected to the multi-stage negative pressure dust suction device for sucking up toxic and harmful smoke and dust.

[0023] In the above-mentioned device for rapidly eliminating instantaneous smoke and dust in underground coal mine blasting operation space, as a preferred solution, a gas-liquid separation guide pipe is further provided inside the high-pressure spraying device, and the gas-liquid separation guide pipe is connected to the mixed high-pressure smoke interface, and the mixed gas in the negative pressure ejection chamber enters the high-pressure spraying device through the gas-liquid separation guide pipe;

[0024] Preferably, the gas-liquid separation guide pipe comprises an air intake manifold, a horizontal airflow channel and a longitudinal airflow channel, two horizontal airflow channels are provided, and the two horizontal airflow channels are cross-connected in a cross shape; one end of the air intake manifold is connected to the mixed high-pressure flue gas interface, and the other end of the air intake manifold is connected to the intersection of the two horizontal airflow channels; the longitudinal airflow channel is vertically arranged, and four longitudinal airflow channels are provided, and the upper end openings of the four longitudinal airflow channels are respectively connected to the ports of the horizontal airflow channels, and the four longitudinal airflow channels are arranged in a claw shape;

[0025] More preferably, the distance between the lower opening of the longitudinal airflow channel and the bottom of the high-pressure spraying device is 5 to 10 cm; the distance between the upper end surface of the gas-liquid separation guide tube and the airflow spraying port is 10 to 20 cm.

[0026] In the device for rapid elimination of instantaneous smoke and dust in the underground blasting operation space of a coal mine as described above, as a preferred embodiment, the space between the upper end surface of the gas-liquid separation guide tube and the airflow spray port is a storage chamber, and the storage chamber is used to accumulate clean moisture; when the gas pressure accumulated in the storage chamber is greater than the upper pressure limit of the airflow spray port, the airflow spray port automatically opens.

[0027] A method for using the device for rapidly eliminating instantaneous smoke and dust in an underground coal mine blasting operation space as described above comprises the following steps:

[0028] Step 1: According to the smoke concentration in the underground blasting operation space, the pressure of the high-pressure gas is regulated by a wind pressure regulating valve to form a high negative pressure environment in the negative pressure injection chamber;

[0029] Step 2: The high negative pressure suction power in the negative pressure injection chamber is transmitted to the multi-stage negative pressure dust suction device and the negative pressure capture chamber, and the toxic and harmful smoke and dust are sucked into the multi-stage negative pressure dust suction device to separate the smoke and dust. The dust in the smoke and dust is intercepted by the multiple dust filter elements in turn, and the smoke after dust removal enters the negative pressure injection chamber and mixes with the high-pressure gas to form a mixed gas.

[0030] Step 3: The mixed gas enters the high-pressure wet spraying device through the gas-liquid separation guide pipe, the mixed gas is fully mixed with the organic active agent, the toxic and harmful flue gas is fully absorbed by the organic active agent, and the remaining clean wet gas enters the storage chamber;

[0031] Step 4: When the gas pressure accumulated in the storage chamber is greater than the upper pressure limit of the airflow spray port, the airflow spray port automatically opens, and the moisture formed by the combination of the gas in the storage chamber and the organic surfactant is sprayed into the underground blasting operation space through the airflow spray port. The moisture contacts the dust floating in the space and wraps the dust to implement further dust sedimentation.

[0032] Compared with the closest prior art, the technical solution provided by the present invention has the following excellent effects:

[0033] The device for rapidly eliminating instantaneous smoke and dust in the underground blasting operation space of a coal mine of the present invention utilizes the underground compressed air pipeline system to output high-pressure gas into the negative pressure injection chamber, thereby forming a high negative pressure environment in the negative pressure injection chamber of the negative pressure injection device, thereby linking a multi-stage negative pressure dust suction device and a high-pressure wet spray device. The multi-stage negative pressure dust suction device actively intercepts the dust generated by the blasting operation to achieve separation of smoke and dust, and the high-pressure wet spray device actively absorbs harmful smoke and sprays moisture outward to wrap the dust for further sedimentation. The whole set of devices and the use method realize the multi-stage linkage elimination of smoke and dust by negative pressure absorption of dust, organic active agent dissolving of smoke and high-pressure humidification and dust reduction.

[0034] In the present invention, the air power source in the downhole compressed air pipeline is sufficient to drive the multi-stage negative pressure dust suction device and the negative pressure capture cavity to suck toxic and harmful smoke. There is no mechanical friction in the entire driving operation process, which has the advantage of inherent safety. The whole set of equipment is small in size, easy to move and simple to operate. It eliminates the shortcomings of traditional high-pressure water injection pump spray dust removal and electric extraction pump dust absorption electric devices such as electricity risk and high energy consumption. The device can realize industrial production, has strong practicability, and can be promoted and applied.

[0035] The method for using the instantaneous smoke and dust rapid elimination device in the underground coal mine blasting operation space of the present invention achieves the purpose of rapidly sucking thick smoke and dust through the negative pressure ejection function of the negative pressure ejection device, and actively intercepts dust, absorbs smoke, and sprays moisture using a multi-stage negative pressure dust suction device and a high-pressure wet spray device, thereby achieving the effect of separating incoming smoke and dust and multi-stage treatment. The method has high efficiency and good effect, and achieves the purpose of low-cost and rapid treatment. The method effectively overcomes the current situation of downwind air pollution caused by using a ventilation system to treat toxic and harmful smoke and the dangerous situation of workers repeatedly breathing smoke, and solves the problems of complicated operation and dangerous electricity use in underground electromechanical equipment dust removal methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. Among them:

[0037] Figure 1 It is a schematic structural diagram of a device for rapidly eliminating instantaneous smoke and dust in an underground blasting operation space of a coal mine according to an embodiment of the present invention;

[0038] Figure 2 Schematic diagram of the external structure of the negative pressure ejection device in the embodiment of the present invention;

[0039] Figure 3 is a cross-sectional view of a negative pressure ejection device in an embodiment of the present invention;

[0040] Figure 4 Schematic diagram of the external structure of a multi-stage negative pressure dust collection device in an embodiment of the present invention;

[0041] Figure 5 Schematic diagram of the external structure of the high-pressure spraying device in an embodiment of the present invention;

[0042] Figure 6 Schematic diagram of the structure of the gas-liquid separation guide tube in an embodiment of the present invention;

[0043] Figure 7 It is a schematic diagram of the field application distribution of the device for rapidly eliminating instantaneous smoke and dust in the blasting operation space of an underground coal mine according to an embodiment of the present invention.

[0044] In the figure: 1. Downhole compressed air pipeline; 2. Air pressure regulating valve; 201. Pressure gauge; 3. High-pressure gas; 4. Air inlet unit; 401. Injection chamber air inlet interface; 402. Air inlet hole; 403. Injection chamber entrance; 5. Negative pressure injection device; 6. Air outlet unit; 601. Injection chamber outlet; 602. Air outlet hole; 603. Injection chamber air outlet interface; 7. Negative pressure injection chamber; 9. Negative pressure suction port; 10. Multi-stage dust suction device interface; 11. Multi-stage negative pressure dust suction device; 12. Primary dust filter element; 13. Secondary dust filter element; 14. Third Grade dust filter element; 15. Negative pressure capture unit; 1501. Negative pressure capture cavity; 16. Mixed high-pressure flue gas interface; 17. Gas-liquid separation guide tube; 1701. Longitudinal air flow channel; 1702. Horizontal air flow channel; 1703. Air intake main pipe; 18. Organic surfactant; 19. Air flow spray port; 20. High-pressure spray device; 21. Liquid injection port; 2201. First rubber hose; 2202. Second rubber hose; 2203. Third rubber hose; 23. Storage cavity; 24. Induced flue gas; 25. Mixed gas; 26. Underground blasting operation space. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0046] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0047] The present invention utilizes the underground compressed air pipeline system which is necessary underground to construct a negative pressure ejection device, a multi-stage negative pressure dust suction device and a high-pressure wet spraying device. The negative pressure ejection device can not only form a negative pressure environment in the negative pressure ejection chamber, transmit the negative pressure power to the multi-stage negative pressure dust suction device, realize active dust interception and smoke separation, but also transmit the high-pressure air power to the high-pressure wet spraying device, utilize organic active agents to actively absorb harmful smoke, spray moisture into the blasting space, utilize moisture to wrap the dust, implement further sedimentation, and realize a multi-stage linkage elimination method of smoke by negative pressure absorption of dust, liquid dissolution of smoke and high-pressure humidification and dust reduction.

[0048] like Figure 1 , which is a schematic diagram of the structure of a device for rapidly eliminating instantaneous smoke and dust in underground blasting operation space of a coal mine in a specific embodiment of the present invention. The present invention provides a device for rapidly eliminating instantaneous smoke and dust in underground blasting operation space of a coal mine, comprising an underground compressed air pipeline 1, a negative pressure ejection device 5, a multi-stage negative pressure dust suction device 11 and a high-pressure wet spraying device 20; Figure 1 and Figure 3 The arrow in the middle indicates the direction of gas flow. Figure 2 The figure shows the external structure of the negative pressure ejection device, which is composed of an air inlet unit 4, an air outlet unit 6, a negative pressure ejection chamber 7 and a negative pressure suction port 9. The negative pressure ejection device 5 includes a negative pressure ejection chamber 7, one side of the negative pressure ejection chamber 7 is connected with the air inlet unit 4, and the other side is connected with the air outlet unit 6, and the air inlet unit 4 and the air outlet unit 6 are both connected with the negative pressure ejection chamber 7; a negative pressure suction port 9 is provided at the bottom of the negative pressure ejection chamber 7, and the negative pressure suction port 9 is connected with the negative pressure ejection chamber 7; the air inlet unit 4 is connected with the downhole pressure air pipeline 1 through the first rubber hose 2201; the downhole pressure air pipeline 1 outputs high pressure gas 3 to the negative pressure ejection chamber 7 through the first rubber hose 2201, and the high pressure gas 3 enters the negative pressure ejection chamber 7 through the air inlet unit 4. The high pressure gas 3 enters the negative pressure ejection chamber 7 from the air inlet unit 4 at a relatively high speed, and a high negative pressure environment is formed in the negative pressure ejection chamber 7 due to the turbulent diffusion of the jet.

[0049] In a specific embodiment of the present invention, the air intake unit 4 is connected to the downhole compressed air pipeline 1 through the first hose 2201; the first hose 2201 is a high-pressure flexible hose. The inner core of the high-pressure flexible hose is nylon, the reinforcement layer is woven from steel wire, the outer skin is polyurethane, the maximum pressure resistance value is not less than 5MPa, and it can withstand higher gas pressure.

[0050] In a specific embodiment of the present invention, a wind pressure regulating valve 2 and a pressure gauge 201 are provided on the first rubber hose 2201. The wind pressure regulating valve 2 regulates the pressure of the high-pressure gas 3 in the negative pressure injection chamber 7 through the indication of the pressure gauge 201. When in use, the wind pressure regulating valve 2 is adjusted until the pressure indication of the pressure gauge 201 reaches a preset pressure value, which is the pressure of the high-pressure gas 3 in the negative pressure injection chamber 7.

[0051] Preferably, the pressure of the high-pressure gas 3 is 0.3-0.8 MPa (eg, 0.3 MPa, 0.4 MPa, 0.5 MPa, 0.6 MPa, 0.8 MPa).

[0052] The principle of negative pressure injection is: assuming that the gas flow in the negative pressure injection chamber 7 is uniform, according to the injection equation, a high negative pressure environment in the negative pressure injection chamber 7 can be achieved, and the momentum conservation theorem in the negative pressure injection chamber 7 is expressed as follows:

[0053]

[0054] The above formula can be used to optimize the cross-sectional areas of the ejection chamber inlet 403, the negative pressure air inlet 9 and the ejection chamber outlet 601 of the ejection device, and can also guide the regulation of the pressure of the high-pressure gas 3 in the negative pressure ejection chamber 7:

[0055] Where: M 1 、M 2、M 3 are respectively the mass flow rates of the high pressure gas 3, the induced flue gas 24, and the mixed gas 25 (in kg / s); V 1 、V 2 、V 3 are respectively the flow rates of the high pressure gas 3, the induced flue gas 24, and the mixed gas 25 (in m / s); S 1 is the cross-sectional area of ​​the high pressure gas 3 entering the injection cavity inlet 403 (unit: m 2 );S 2 is the cross-sectional area (in m2) of the smoke 24 entering the negative pressure air intake port 9. 2 );S 3 is the cross-sectional area of ​​the mixed gas 25 entering the ejection cavity outlet 601 (in m 2 );P 1 , P 2 , P 3 They are respectively the static pressures (in MPa) of the high pressure gas 3, the induced flue gas 24, and the mixed gas 25.

[0056] like Figure 3 The figure shows a cross-sectional view of a negative pressure injection device. In a specific embodiment of the present invention, an injection chamber air inlet interface 401 is provided at one end of the air inlet unit 4, and the injection chamber air inlet interface 401 is located outside the negative pressure injection chamber 7. The injection chamber air inlet interface 401 is connected to one end of the first hose 2201, and the other end of the first hose 2201 is connected to the downhole compressed air pipeline 1; an injection chamber inlet 403 is provided at the other end of the air inlet unit 4, and the injection chamber inlet 403 is located inside the negative pressure injection chamber 7; an air inlet hole 402 is provided between the injection chamber inlet 403 and the injection chamber air inlet interface 401.

[0057] Preferably, the cross-sectional area of ​​the injection chamber inlet 403 is smaller than the cross-sectional area of ​​the injection chamber air inlet interface 401 .

[0058] In the specific embodiment, the air inlet hole 402 is the gas channel for the high-pressure gas in the downhole compressed air pipeline 1 to enter the negative pressure injection chamber 7. The air inlet hole 402 is a cone shape with openings at both ends. The cross-sectional area of ​​the injection chamber inlet 403 is smaller than the cross-sectional area of ​​the injection chamber air inlet interface 401, so as to generate a faster flow rate at the injection chamber inlet 403, which is conducive to forming a negative pressure environment in the negative pressure injection chamber.

[0059] During the specific implementation, one end of the first hose 2201 is connected to the downhole compressed air pipeline 1, and the other end is connected to the ejection chamber air inlet interface 401 of the air intake unit 4. The high-pressure gas 3 enters the air inlet hole 402 from the ejection chamber air inlet interface 401, and then is output from the ejection chamber inlet 403 to the negative pressure ejection chamber 7. The high negative pressure environment in the negative pressure ejection chamber 7 enables the negative pressure suction power to be transmitted to the multi-stage negative pressure dust suction device 11 to extract the smoke. The ejected smoke 24 enters the negative pressure ejection chamber 7 and mixes with the high-pressure gas in the mixing chamber to exchange momentum, mass and energy. The speed gradually balances during the flow process, and the formed mixed gas 25 enters the high-pressure spraying device 20 through the ejection chamber outlet 601 of the air outlet unit 6.

[0060] In a specific embodiment of the present invention, an ejection chamber air outlet interface 603 is provided at one end of the air outlet unit 6, and the ejection chamber air outlet interface 603 is located outside the negative pressure ejection chamber 7, and the ejection chamber air outlet interface 603 is connected to the third rubber hose 2203; an ejection chamber outlet 601 is provided at the other end of the air outlet unit 6, and the ejection chamber outlet 601 is located inside the negative pressure ejection chamber 7; an air outlet hole 602 is provided between the ejection chamber outlet 601 and the ejection chamber air outlet interface 603.

[0061] Preferably, the cross-sectional area of ​​the ejection chamber outlet interface 603 is larger than the cross-sectional area of ​​the ejection chamber outlet 601 ; and the cross-sectional area of ​​the ejection chamber outlet 601 is larger than the cross-sectional area of ​​the ejection chamber inlet 403 .

[0062] In a specific implementation, the air outlet 602 is the gas channel through which the mixed gas 25 in the negative pressure injection chamber 7 enters the injection chamber air outlet interface 603 from the injection chamber outlet 601. The portion of the air outlet 602 located inside the negative pressure injection chamber 7 is in the shape of an open cylinder, and the portion located outside the negative pressure injection chamber 7 is in the shape of a cone. The cross-sectional area of ​​the injection chamber air outlet interface 603 is larger than the cross-sectional area of ​​the injection chamber outlet 601, so as to generate a larger flow rate at the injection chamber outlet 601, which is conducive to the formation of negative pressure in the negative pressure injection chamber 7.

[0063] In a specific embodiment, the cross-sectional area of ​​the ejection cavity outlet 601 is larger than the cross-sectional area of ​​the ejection cavity inlet 403, that is, S 1 <S 3 ;

[0064] More preferably, in a specific embodiment, the cross-sectional area of ​​the injection chamber air inlet interface 401 is equal to the cross-sectional area of ​​the injection chamber air outlet interface 603; the injection chamber air inlet interface 401 and the injection chamber air outlet interface 603 are respectively connected to the first rubber hose 2201 and the second rubber hose 2202, keeping the cross-sectional area of ​​the injection chamber air inlet interface 401 equal to the cross-sectional area of ​​the injection chamber air outlet interface 603, and the diameters of the first rubber hose 2201 and the second rubber hose 2202 are also the same.

[0065] like Figure 4As shown, it is a schematic diagram of the external structure of the multi-stage negative pressure dust suction device in an embodiment of the present invention. A multi-stage dust suction device interface 10 is provided on one side of the multi-stage negative pressure dust suction device 11. The multi-stage dust suction device interface 10 is connected to the negative pressure air intake port 9 through the second rubber hose 2202, so that the negative pressure introduction chamber 7 is connected to the multi-stage negative pressure dust suction device 11, and the negative pressure introduction chamber 7 introduces the smoke in the multi-stage negative pressure dust suction device 11 through the second rubber hose 2202; a negative pressure capture unit 15 is provided on the other side of the multi-stage negative pressure dust suction device 11, and the negative pressure capture unit 15 is used to suck toxic and harmful smoke into the multi-stage negative pressure dust suction device 11; a plurality of dust filter elements are arranged at intervals in the multi-stage negative pressure dust suction device 11, and the dust filter elements are used to intercept dust.

[0066] In a specific embodiment of the present invention, the second hose 2202 is a high-pressure flexible hose.

[0067] During the specific implementation, toxic and harmful smoke is sucked into the multi-stage negative pressure dust suction device 11 by the suction action of the negative pressure capture unit 15. First, the dust passes through three dust filters and is intercepted in turn. Then, the induced smoke 24 is sucked into the negative pressure induced chamber 7 under the action of the negative pressure suction power to achieve smoke and dust separation. The induced smoke 24 is mixed with the high-pressure gas 3 in the negative pressure induced chamber 7 in the mixing chamber to exchange momentum, mass and energy. The speed gradually becomes balanced during the flow process, and after mixing in the negative pressure induced chamber 7, it is output from the induced chamber outlet interface 603.

[0068] In a specific embodiment of the present invention, a card slot is provided inside the multi-stage negative pressure dust suction device 11, and the dust filter core is fixed to the inside of the multi-stage negative pressure dust suction device 11 through the card slot for absorbing dust; along the direction from the multi-stage dust suction device interface 10 to the negative pressure capture unit 15, the filter hole diameter of the dust filter core increases successively; wherein, the dust filter core is pluggable for easy replacement, and after the dust filter core is full of dust, it can be disassembled, cleaned, and reused.

[0069] Preferably, three dust filters are provided, which are respectively a primary dust filter 12 , a secondary dust filter 13 and a tertiary dust filter 14 along the direction from the multi-stage dust suction device interface 10 to the negative pressure capture unit 15 .

[0070] More preferably, the filter pore diameter of the primary dust filter element is 1 μm; the filter pore diameter of the secondary dust filter element is 5 μm; and the filter pore diameter of the tertiary dust filter element is 10 μm.

[0071] In a specific embodiment of the present invention, the negative pressure capture unit 15 is trumpet-shaped, and the trumpet-shaped negative pressure capture unit 15 can capture toxic and harmful smoke to the greatest extent. A negative pressure capture cavity 1501 is provided inside the negative pressure capture unit 15, and the negative pressure capture cavity 1501 is connected to the multi-stage negative pressure dust suction device 11 for sucking toxic and harmful smoke. The smoke first passes through multiple dust filter cores to intercept the dust, and the remaining smoke is sucked into the negative pressure injection cavity 7 through the negative pressure suction port 9.

[0072] like Figure 5 As shown, it is a schematic diagram of the external structure of the high-pressure spraying device in an embodiment of the present invention. The side wall of the high-pressure spraying device 20 is provided with a liquid injection port 21 and a mixed high-pressure flue gas interface 16. The mixed high-pressure flue gas interface 16 is connected with the negative pressure injection chamber 7 through the air outlet unit 6. The mixed gas 25 in the negative pressure injection chamber 7 enters the high-pressure spraying device 20 through the third hose 2203; an organic surfactant 18 is provided in the high-pressure spraying device 20, and the organic surfactant 18 is a liquid for absorbing toxic and harmful flue gases; a plurality of airflow spraying ports 19 are evenly opened on the top of the high-pressure spraying device 20, and the airflow spraying ports 19 are used to spray wet gas into the underground blasting operation space 26.

[0073] In a specific embodiment, a certain concentration of organic active agent 18 is configured. The organic active agent 18 has dual functions. It can absorb toxic and harmful smoke generated after blasting and improve the wetting performance of liquid on coal dust. The organic active agent includes a non-ionic penetrant JFC and an aqueous solution of an inorganic salt. In terms of mass percentage, the non-ionic penetrant JFC is 0.05%-2%, the inorganic salt is 20%-40%, and the remainder is water; wherein the inorganic salt is calcium chloride, sodium chloride, etc.

[0074] In a specific embodiment, in a specific embodiment of the present invention, the mixed high-pressure flue gas interface 16 is connected to the gas outlet unit 6 through the third rubber hose 2203; the third rubber hose 2203 is a high-pressure flexible rubber hose.

[0075] Figure 6 As shown, a schematic diagram of the structure of the gas-liquid separation guide tube in the embodiment of the present invention, in a specific embodiment of the present invention, a gas-liquid separation guide tube 17 is further provided inside the high-pressure spraying device 20, and the gas-liquid separation guide tube 17 is arranged vertically, and the lower end of the gas-liquid separation guide tube 17 is connected to the mixed high-pressure flue gas interface 16, and the mixed gas 25 in the negative pressure injection chamber 7 enters the high-pressure spraying device 20 through the lower end of the gas-liquid separation guide tube 17; the mixed gas 25 is fully mixed with the organic active agent 18, and the toxic and harmful flue gas in the mixed gas 25 is fully absorbed by the organic active agent 18 and eliminated in the high-pressure spraying device 20, and the remaining clean moisture flows through the organic active agent 18 and enters the storage chamber 23 at the upper part of the high-pressure spraying device 20.

[0076] Preferably, the gas-liquid separation guide pipe 17 includes an air intake main pipe 1703, a horizontal airflow channel 1702 and a longitudinal airflow channel 1701. Two horizontal airflow channels 1702 are provided, and the two horizontal airflow channels 1702 are cross-connected in a cross shape; one end of the air intake main pipe 1703 is connected to the mixed high-pressure flue gas interface 16, and the other end of the air intake main pipe 1703 is connected to the intersection of the two horizontal airflow channels 1702; the longitudinal airflow channel 1701 is vertically arranged, and four longitudinal airflow channels 1701 are provided. The upper end openings of the four longitudinal airflow channels 1701 are respectively connected to the ports of the horizontal airflow channels 1702, and the four longitudinal airflow channels 1701 are arranged in a claw shape; such an arrangement is conducive to the contact between the mixed gas 25 and the organic active agent 18, improves the purification efficiency, and enhances the humidification effect.

[0077] More preferably, the distance between the lower end opening of the longitudinal airflow channel 1701 and the bottom of the high-pressure spraying device 20 is in the range of 5 to 10 cm (for example, 5 cm, 6 cm, 7 cm, 8 cm, 9 cm, 10 cm); the distance between the upper end surface of the gas-liquid separation guide tube 17 and the airflow spraying port 19 is in the range of 10 to 20 cm (for example, 10 cm, 11 cm, 12 cm, 13 cm, 14 cm, 15 cm, 16 cm, 17 cm, 18 cm, 19 cm, 20 cm), and the space between the upper end surface of the gas-liquid separation guide tube 17 and the airflow spraying port 19 forms a gas storage chamber 23.

[0078] More preferably, the height of the lower end surface of the horizontal airflow channel 1702 is higher than the height of the lower edge of the liquid injection port 21 .

[0079] In a specific embodiment, the prepared organic active agent 18 is injected into the high-pressure spraying device 20 through the injection port 21. Before the injection, the air flow spraying port 19 is manually opened so that the air in the high-pressure spraying device 20 is discharged while the organic active agent 18 is injected. When the liquid level of the organic active agent 18 is the same as the height of the lower edge of the injection port, the air flow spraying port 19 is closed. Since the lower end surface height of the horizontal air flow channel 1702 is higher than the height of the lower edge of the injection port 21, no liquid is filled into the horizontal air flow channel 1702, and only the four longitudinal air flow channels 170 1 is filled with liquid; when the mixed gas 25 enters the four longitudinal air flow channels 1701 through the air intake manifold 1703, the mixed gas squeezes the liquid in the longitudinal air flow channels 1701, so that the organic active agent 18 in the four longitudinal air flow channels 1701 is discharged into the high-pressure spraying device 20. After the entire gas-liquid separation guide tube is filled with the mixed gas 25, the mixed gas 25 overflows from the bottom of the longitudinal air flow channel 1701, and the toxic and harmful flue gas is absorbed by the organic active agent 18. The remaining clean gas carries water into the storage chamber 23 to form moisture.

[0080] In a specific embodiment of the present invention, the space between the upper end surface of the gas-liquid separation guide tube 17 and the airflow spray port 19 is a storage chamber 23, and the storage chamber 23 is used to accumulate clean moisture; when the gas pressure accumulated in the storage chamber 23 is greater than the upper pressure limit of the airflow spray port 19, the airflow spray port 19 automatically opens, and the pressure resistance value of the airflow spray port 19 can be set in the range of 0.1MPa to 0.6MPa (for example, 0.1MPa, 0.2MPa, 0.3MPa, 0.4MPa, 0.5MPa, 0.6MPa), and its set value is always maintained at 0.2MPa lower than the pressure value set by the high-pressure gas 3.

[0081] In specific implementation, the air flow spray port 19 has a certain pressure resistance range. When the pressure accumulated in the storage chamber is greater than the upper pressure resistance limit of the air flow spray port 19, the air flow spray port 19 automatically opens, and then the moisture formed by the combination of the gas in the storage chamber and the organic active agent 18 is sprayed into the underground blasting operation space 26. The mist contacts the floating dust in the space and wraps the dust, and then settles it, further enhancing the dust elimination.

[0082] The present invention also provides a method for using a device for rapidly eliminating instantaneous smoke and dust in underground coal mine blasting operation space, such as Figure 7 As shown, Figure 1 A simplified schematic diagram of the field application distribution. Figure 1 and Figure 7 The instantaneous smoke and dust rapid elimination device for underground coal mine blasting operation space and the field application distribution mode are implemented, and the method includes the following steps:

[0083] Step 1: According to the smoke concentration in the underground blasting operation space 26, the pressure of the high-pressure gas 3 is regulated by the wind pressure regulating valve 2 and the pressure gauge 201 to form a high negative pressure environment in the negative pressure injection chamber 7. The high-pressure gas 3 enters the negative pressure injection chamber 7 from the injection chamber inlet 403 at a relatively high speed. Due to the turbulent diffusion of the jet, a high negative pressure environment is formed in the negative pressure injection chamber 7. The pressure of the high-pressure gas is regulated by the wind pressure regulating valve 2, and the wind pressure range is controlled to be 0.3-0.8MPa (for example, 0.3MPa, 0.4MPa, 0.5MPa, 0.6MPa, 0.8MPa).

[0084] Step two, the high negative pressure suction power in the negative pressure injection chamber 7 is transmitted to the multi-stage negative pressure dust suction device 11 and the negative pressure capture chamber 1501 through the second rubber hose 2202, and the toxic and harmful smoke is sucked into the multi-stage negative pressure dust suction device 11 to implement smoke separation. The dust in the smoke is intercepted by multiple dust filter elements in turn, and the induced smoke 24 after dust removal enters the negative pressure injection chamber 7 and mixes with the high-pressure gas to form a mixed gas 25. A primary dust filter 12, a secondary dust filter 13 and a tertiary dust filter 14 are sequentially arranged in the multi-stage dust collection device. The tertiary dust filter 14 absorbs dust particles larger than 10 μm, the secondary dust filter 13 absorbs dust particles of 5 to 10 μm, and the primary dust filter 12 absorbs dust particles of 1 to 5 μm. Dust is intercepted by the tertiary dust filter 14, the secondary dust filter 13 and the primary dust filter 12 in sequence, and the flue gas enters the negative pressure injection chamber 7 along the second rubber hose 2202. The flue gas 24 mixes with the high-pressure gas 3 in the mixing chamber to exchange momentum, mass and energy. The speed is gradually balanced during the flow, and after mixing in the negative pressure injection chamber 7, the flue gas is output from the injection chamber outlet interface 603.

[0085] Step three, the mixed gas 25 enters the high-pressure spraying device 20 through the gas-liquid separation guide tube 17, the mixed gas 25 is fully mixed with the organic active agent 18, the toxic and harmful flue gas is fully absorbed by the organic active agent 18, and the remaining clean moisture enters the storage chamber. Specifically, a certain concentration of organic active agent 18 needs to be configured in advance, and the configured organic active agent 18 is injected into the high-pressure spraying device 20 through the injection port 21. The air flow spraying port 19 is manually opened before injection. When the liquid level of the organic active agent 18 is the same as the height of the lower edge of the injection port, the air flow spraying port 19 is closed. The organic active agent 18 has a dual function, absorbing the toxic and harmful flue gas generated after the explosion, and can also improve the wetting performance of the liquid on the flue gas. The remaining clean moisture flows through the organic active agent 18 and enters the storage chamber at the top of the high-pressure spraying device 20.

[0086] Step 4: When the gas pressure accumulated in the storage chamber is greater than the upper pressure limit of the airflow spray port 19, the airflow spray port 19 automatically opens, and the moisture formed by the combination of the gas in the storage chamber and the organic active agent 18 is sprayed into the underground blasting operation space 26 through the airflow spray port 19. The moisture contacts the dust floating in the space and wraps the dust, causing the dust to further settle.

[0087] In summary, the device in the present invention utilizes the underground compressed air pipeline system commonly available underground to construct a negative pressure injection device, a multi-stage negative pressure dust suction device and a high-pressure wet spray device. The underground high-pressure air power source is sufficient, and there is no mechanical movement and friction during the operation of the drive system, which is completely intrinsically safe. The whole set of equipment is small in size, easy to move and simple to operate. It eliminates the shortcomings of high electricity risk and high energy consumption of traditional electric devices such as high-pressure water injection pump spray dust removal and electric extraction pump dust absorption. The device can realize industrial production, has strong practicability, and can be promoted and applied.

[0088] The elimination method of the present invention achieves the purpose of quickly absorbing thick smoke and dust through the negative pressure ejection function, and utilizes the multi-stage negative pressure dust suction and high-pressure wet spraying functions to actively intercept dust and absorb smoke, and to improve the dust reduction effect of moisture, thereby achieving smoke and dust separation and multi-stage control effects, forming a comprehensive elimination method of negative pressure dust absorption, liquid smoke dissolution, and wet spraying dust reduction, overcoming the problem of secondary hazards caused by single smoke and dust elimination, and being particularly suitable for the control of a large amount of toxic and harmful smoke and dust instantly generated in underground blasting operation spaces.

[0089] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are within the scope of protection of the pending claims of the present invention.

Claims

1. A method for using a device for rapidly eliminating instantaneous smoke and dust in underground coal mine blasting operation space, characterized in that: The device for rapidly eliminating instantaneous smoke and dust in underground coal mine blasting operation space comprises: Downhole compressed air pipeline, and A negative pressure ejection device, the negative pressure ejection device comprising a negative pressure ejection chamber, one side of the negative pressure ejection chamber is connected to an air inlet unit, and the other side is connected to an air outlet unit; a negative pressure air suction port is provided at the bottom of the negative pressure ejection chamber, and the negative pressure air suction port is connected to the negative pressure ejection chamber; the air inlet unit is connected to the downhole compressed air pipeline; the downhole compressed air pipeline outputs high-pressure gas to the negative pressure ejection chamber through the air inlet unit; A multi-stage negative pressure dust suction device, wherein a multi-stage dust suction device interface is provided on one side of the multi-stage negative pressure dust suction device, and the multi-stage dust suction device interface is connected to the negative pressure suction port; a negative pressure capture unit is provided on the other side of the multi-stage negative pressure dust suction device; and a plurality of dust filter elements are arranged at intervals inside the multi-stage negative pressure dust suction device; A high-pressure spraying device, wherein a liquid injection port and a mixed high-pressure smoke interface are arranged on the side wall of the high-pressure spraying device, and the mixed high-pressure smoke interface is connected with the negative pressure injection cavity through the gas outlet unit; an organic active agent is arranged in the high-pressure spraying device, and the organic active agent is a liquid; a plurality of airflow spraying ports are evenly arranged on the top of the high-pressure spraying device; The air intake unit is connected to the downhole compressed air pipeline through a first rubber hose; the first rubber hose is provided with an air pressure regulating valve and a pressure gauge, and the air pressure regulating valve regulates the pressure of the high-pressure gas in the negative pressure injection chamber according to the indication of the pressure gauge; the interior of the high-pressure spraying device is also provided with a gas-liquid separation guide pipe, and the space between the upper end surface of the gas-liquid separation guide pipe and the air flow spraying port is a storage chamber; The following steps are involved: Step 1: According to the smoke concentration in the underground blasting operation space, the pressure of the high-pressure gas is regulated by a wind pressure regulating valve to form a high negative pressure environment in the negative pressure injection chamber; Step 2: The high negative pressure suction power in the negative pressure injection chamber is transmitted to the multi-stage negative pressure suction device and the negative pressure capture chamber, and the toxic and harmful smoke is sucked into the multi-stage negative pressure suction device to separate the smoke. The dust in the smoke is intercepted by the multiple dust filter elements in turn, and the smoke after dust removal enters the negative pressure injection chamber and mixes with the high-pressure gas to form a mixed gas. Step 3: The mixed gas enters the high-pressure wet spraying device through the gas-liquid separation guide pipe, the mixed gas is fully mixed with the organic active agent, the toxic and harmful flue gas is fully absorbed by the organic active agent, and the remaining clean wet gas enters the storage chamber; Step 4: When the gas pressure accumulated in the storage chamber is greater than the upper pressure limit of 0.6MPa of the airflow spray port, the airflow spray port automatically opens, and the moisture formed by the combination of the gas in the storage chamber and the organic surfactant is sprayed into the underground blasting operation space through the airflow spray port. The moisture contacts the dust floating in the space and wraps the dust, thereby further settling the dust.

2. The method for using the device for rapidly eliminating instantaneous smoke and dust in underground coal mine blasting operation space according to claim 1, characterized in that: The multi-stage dust collection device interface is connected to the negative pressure air intake port through a second rubber hose; the mixed high-pressure smoke interface is connected to the air outlet unit through a third rubber hose; The first rubber hose, the second rubber hose and the third rubber hose are all high-pressure flexible rubber hoses.

3. The method for using the device for rapidly eliminating instantaneous smoke and dust in underground coal mine blasting operation space as claimed in claim 2, characterized in that: An ejection cavity air inlet interface is provided at one end of the air inlet unit, the ejection cavity air inlet interface is located outside the negative pressure ejection cavity, and the ejection cavity air inlet interface is connected to the first rubber hose; an ejection cavity inlet is provided at the other end of the air inlet unit, the ejection cavity inlet is located inside the negative pressure ejection cavity; an air inlet hole is provided between the ejection cavity inlet and the ejection cavity air inlet interface; The cross-sectional area of ​​the inlet of the injection cavity is smaller than the cross-sectional area of ​​the air inlet interface of the injection cavity.

4. The method for using the device for rapidly eliminating instantaneous smoke and dust in underground coal mine blasting operation space as claimed in claim 3, characterized in that: An ejection cavity air outlet interface is provided at one end of the air outlet unit, the ejection cavity air outlet interface is located outside the negative pressure ejection cavity, and the ejection cavity air outlet interface is connected to the third rubber hose; an ejection cavity outlet is provided at the other end of the air outlet unit, the ejection cavity outlet is located inside the negative pressure ejection cavity; an air outlet hole is provided between the ejection cavity outlet and the ejection cavity air outlet interface; The cross-sectional area of ​​the air outlet interface of the injection chamber is larger than the cross-sectional area of ​​the outlet of the injection chamber; the cross-sectional area of ​​the outlet of the injection chamber is larger than the cross-sectional area of ​​the inlet of the injection chamber.

5. The method for using the device for rapidly eliminating instantaneous smoke and dust in underground coal mine blasting operation space as claimed in claim 1 or 2, characterized in that: The multi-stage negative pressure dust suction device is provided with a card slot inside, and the dust filter core is fixed inside the multi-stage negative pressure dust suction device through the card slot to absorb dust; along the direction from the interface of the multi-stage dust suction device to the negative pressure capture unit, the filter hole diameter of the dust filter core increases successively; The dust filter core is provided with three paths, which are respectively a primary dust filter core, a secondary dust filter core and a tertiary dust filter core along the direction from the interface of the multi-stage dust collection device to the negative pressure capture unit; The filter pore diameter of the primary dust filter core is 1 μm; the filter pore diameter of the secondary dust filter core is 5 μm; and the filter pore diameter of the tertiary dust filter core is 10 μm.

6. The method for using the device for rapidly eliminating instantaneous smoke and dust in underground coal mine blasting operation space as claimed in claim 1 or 2, characterized in that: The negative pressure capture unit is trumpet-shaped, and a negative pressure capture cavity is provided inside the negative pressure capture unit. The negative pressure capture cavity is connected to the multi-stage negative pressure dust suction device and is used to suck up toxic and harmful smoke.

7. The method for using the device for rapidly eliminating instantaneous smoke and dust in underground coal mine blasting operation space as claimed in claim 1 or 2, characterized in that: The gas-liquid separation guide pipe is in communication with the mixed high-pressure smoke interface, and the mixed gas in the negative pressure injection chamber enters the high-pressure wet spray device through the gas-liquid separation guide pipe; The gas-liquid separation guide pipe includes an intake manifold, a horizontal airflow channel and a longitudinal airflow channel. Two horizontal airflow channels are provided, and the two horizontal airflow channels are cross-connected in a cross shape; one end of the intake manifold is connected to the mixed high-pressure flue gas interface, and the other end of the intake manifold is connected to the intersection of the two horizontal airflow channels; the longitudinal airflow channel is vertically arranged, and four longitudinal airflow channels are provided. The upper end openings of the four longitudinal airflow channels are respectively connected to the ports of the horizontal airflow channels, and the four longitudinal airflow channels are arranged in a claw shape; The distance between the lower opening of the longitudinal airflow channel and the bottom of the high-pressure spraying device is 5 to 10 cm; The distance between the upper end surface of the gas-liquid separation guide pipe and the air flow spray port is 10 to 20 cm.

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