A pressure-in, empty, head-on foaming dust removal device

Abstract

The present invention belongs to the technical field of coal mine dust removal. It relates to a press-in empty head-on foaming dust removal device, including a foam dust extinguisher and a foam agent storage box; the foam dust extinguisher includes a foam generator, a foam storage cylinder, and a foam nozzle connected in series in sequence; the foam generator is provided with an ejector and an air inlet interface; the ejector is provided with a pressure water inlet and a foam agent inlet; the foam agent inlet is communicated with the foam agent storage box, and the pressure water inlet is used to access the pressure water, and the ejection effect of the ejector is used to generate negative pressure to eject the foam agent with the pressure water as the power source, so that the foam agent is transported from the foam agent storage box to the mixing chamber; the foam agent and the pressure water are mixed under the ejection effect, and foam is generated under the action of compressed gas, and the foam is ejected from the foam nozzle through the foam storage cylinder to remove dust. The present invention adopts a foam dust removal method, and the foam dust extinguisher can be installed on the drum arm of the coal machine, and the foam is generated and ejected at the head-on position, and the foam directly acts on the dust source to prevent coal dust from escaping.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mine dust removal and relates to a press-in, emptying, head-on foaming dust removal device. Background Art

[0002] When the comprehensive excavation machine is cutting coal at the underground coal mine working face, the coal machine drum is strongly broken, causing the coal wall to spall and a large amount of dusty coal to fall to the bottom of the bottom trough of the end, generating impact dust up to a height of about 1700mm. The impact dust spreads outward rapidly under the action of wind flow. Since the isolation height of the comprehensive excavation machine that blocks the impact dust from escaping is less than 1200mm, it cannot stop the large amount of dust generated instantly from escaping. As a result, a large amount of dust is dispersed to the rear end of the tunnel under the action of the wind flow in the tunnel, forming a dark tunnel within a few meters, and even colleagues who are close at hand cannot see, posing a serious threat to the physical and mental health of the tunnel workers.

[0003] The main causes of coal wall spalling and dust generation include the friction between the pick and the coal wall when the multi-purpose excavator cuts coal, the low water content of the coal seam makes it easy for the coal seam to break and generate dust, and the high mine pressure squeezes and generates dust. The current control solutions include:

[0004] (1) Using high-pressure spray to suppress dust: It is necessary to add a high-pressure pump station with a 37KW motor and lay a pipeline of about 2 kilometers. In addition, the spray head is about 3 meters away from the coal machine drum. The 3-meter-long spray mist is easily blown away by the wind in the tunnel and is difficult to reach the drum. In addition, the wind speed at the body of the multi-purpose excavator is high, resulting in a large amount of water mist being blown back by the wind onto the workers' clothes before reaching the head, causing great dissatisfaction among the workers. Therefore, the spray pressure can only be reduced. Although the water mist is reduced, the dust suppression effect is greatly affected.

[0005] (2) Long-pressure short-extraction wet dust removal is adopted when the dust curtain is hung: This system is complex and requires a high-pressure pump station and a dust control device of about 5 meters in length. It also requires a supervisor to remove and reconnect the air supply duct in real time as the air supply duct is increased. The workload is very large and the exhaust port is difficult to extend to the ideal position in front of the driver due to the complex action relationship of the tunnel boring machine during excavation. To prevent the exhaust port from being damaged, the exhaust port is extended to a position parallel to the driver. The dust cannot be eliminated at the source and can only be sucked out after the coal dust diffuses. Due to the large cross-section of the tunnel and the fast dust diffusion speed, it is difficult to completely draw the dust into the dust collector. The dust removal efficiency can only reach about 80%, which is not very ideal. In addition, the maintenance workload is large and the operating cost is high. Summary of the invention

[0006] In view of this, the object of the present invention is to solve the shortcomings of the above-mentioned existing dust removal methods and provide a press-in and empty head-on foaming dust removal device.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A press-in, empty, head-on foaming dust removal device comprises a foam dust extinguisher and a foam agent storage box; the foam dust extinguisher comprises a foam generator, a foam storage cylinder, and a foam nozzle connected in series in sequence;

[0009] The foam generator comprises a generator housing, an air-equalizing hood and a foaming net; one end of the generator housing is connected to the foam storage cylinder, and the other end of the generator housing is provided with a sealing cover; the sealing cover is provided with an ejector and an air inlet interface; the air-equalizing hood is arranged in the generator housing, and divides the inner cavity of the generator housing into an air cavity and a mixing cavity;

[0010] The air inlet interface is arranged at one side of the ejector and communicates with the air cavity. The air inlet interface is used to receive compressed gas and introduce the compressed gas into the air cavity. The gas equalizing hood is provided with a plurality of air holes to communicate the air cavity with the mixing cavity.

[0011] The ejector is arranged at one end of the gas-equalizing hood and communicates with the mixing chamber, and the foaming net is arranged at the other end of the gas-equalizing hood; the ejector is provided with a pressure water inlet and a foaming agent inlet; the foaming agent inlet is communicated with the foaming agent storage tank, and the pressure water inlet is used to connect the pressure water, and the ejection effect of the ejector is utilized to generate negative pressure to eject the foaming agent with the pressure water as the power source, so that the foaming agent is transported from the foaming agent storage tank to the mixing chamber;

[0012] The foaming agent is mixed with the pressurized water under the action of the injection, and foam is generated on the foaming net under the action of the compressed gas. The foam is sprayed out from the foam nozzle through the foam storage cylinder to remove dust.

[0013] Furthermore, the foam agent storage box is provided with an emptying device placed in the foam agent, and the emptying device includes a shell, and the shell is provided with a pressure water chamber and a foam agent chamber;

[0014] A foam agent inlet and a foam agent outlet are provided on the side wall of the foam agent cavity, the foam agent inlet is communicated with the inner cavity of the foam agent storage box, and the foam agent outlet is communicated with the foam agent inlet through a pipeline;

[0015] The pressure water chamber is provided with a water inlet and a water outlet; the water inlet is connected to the pressure water through a pipeline, and the water outlet is connected to the pressure water inlet;

[0016] A power conversion component is also arranged in the shell. The power conversion component uses pressurized water as a power source to transport the foaming agent from the foaming agent chamber to the ejector and discharge the air in the pipeline.

[0017] Furthermore, the power conversion component is a piston, which is slidably arranged in the outer shell and is used to separate the pressure water chamber and the foam agent chamber; a spring is provided between the piston and the bottom surface of the foam agent chamber, and the spring is used to drive the piston to reset; the piston is used to convert the pressure of the pressure water into power for squeezing the foam agent.

[0018] Furthermore, the power conversion component is a rotor, which includes an impeller and a screw. The screw is rotatably arranged in the foaming agent chamber, and the impeller is arranged in the pressure water chamber and fixedly connected to the screw. The kinetic energy of the pressure water is used to drive the impeller and drive the screw to rotate, and the screw is used to extrude the foaming agent.

[0019] Furthermore, it also includes a water-gas linkage control valve; the water-gas linkage control valve is provided with a first inlet, a first outlet, a second inlet, and a second outlet; the first inlet is used for receiving pressurized water; the second inlet is used for receiving compressed gas;

[0020] The first outlet is connected to the water inlet; the second outlet is connected to the air inlet; the water-gas linkage control valve is used to control the input of pressurized water and compressed gas. The water-gas linkage control valve is used to control the foaming process to achieve the best foaming effect.

[0021] Furthermore, a water volume regulator is also provided on the water-gas linkage control valve to adjust the input water volume of the pressurized water.

[0022] Furthermore, the gas-evening hood is conical, the ejector is arranged at the small end of the gas-evening hood, and the bubbling net is arranged at the large end of the gas-evening hood.

[0023] Furthermore, a vent hole is provided on the top of the foam agent storage box, and an air filter is provided in the vent hole.

[0024] Furthermore, the ejector includes a nozzle and an ejector tube, a diffusion channel is provided in the ejector tube, the nozzle is provided at one end of the diffusion channel, and the other end of the diffusion channel is communicated with the mixing chamber; the pressure water inlet is provided on the nozzle; the foaming agent inlet is provided on the side wall of the ejector tube and is communicated with the diffusion channel.

[0025] Furthermore, a joint protection cover is provided at one end of the generator housing away from the bubble storage cylinder, and the ejector is arranged in the joint protection cover.

[0026] The beneficial effects of the present invention are:

[0027] (1) The present invention adopts a foam dust removal method. The foam dust extinguisher is relatively small in size (length 230mm×height 123mm×width 124mm) and can be installed on the drum arm of the coal machine. The dust removal foam generating port is less than 1.5 meters away from the drum. The drum is always closely followed for foam spraying and covering. The dust is adhered and settled at the source by foam, thereby preventing the coal dust from escaping.

[0028] (2) The foaming agent in the present invention adopts a long-distance instantaneous pressure-in type rear negative pressure self-priming addition method, which can minimize the damage of the foam, maintain the integrity of the foam and achieve the best dust removal effect. The foam is generated and ejected at the head, and the foaming efficiency is as high as 99%. The foam directly acts on the dust source to prevent dust from spreading, and the dust reduction effect is more ideal.

[0029] (3) The emptying device of the present invention does not need to be equipped with a high-cost high-pressure pump station. The pressure water can be directly used as the cooling water (2-4MPa) of the tunnel boring machine itself and the pressure pipe can fully meet the requirements of the dust suppression device. When the emptying device is started, the pressure water is used to squeeze the foaming agent, discharge the air in the pipeline, and transport the foaming agent to the ejector. Under the negative pressure ejection of the pressure water in the ejector, the foaming agent automatically flows out of the foaming agent storage tank without the need for additional power.

[0030] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0032] Figure 1 Schematic diagram of the press-in and empty head-on foaming dust removal device in Example 1 of the present invention;

[0033] Figure 2 for Figure 1 Schematic diagram of the middle emptying device;

[0034] Figure 3 It is a schematic diagram of the foam dust extinguisher in the present invention;

[0035] Figure 4 for Figure 3 Left view of;

[0036] Figure 5 Schematic diagram of a press-in and empty head-on foaming dust removal device in Example 2 of the present invention;

[0037] Figure 6 for Figure 5 Schematic diagram of the middle emptying device;

[0038] Figure 7 for Figure 5 Schematic diagram of the impeller.

[0039] Figure numerals: 1-foam dust extinguisher; 2-foam agent storage box; 3-emptying device; 4-foam agent pipeline; 5-pressure water pipe; 6-pressure air pipe; 7-water-gas linkage control valve; 8-water regulator; 9-air inlet pipe; 10-water inlet pipe; 11-air filter; 12-generator shell; 13-gas equalization hood; 14-foam storage cylinder; 15-foam nozzle; 16-foaming net; 17-sealing cover; 18-protective cover; 101-nozzle; 102-injection pipe; 103-pressure water inlet; 104-foam agent inlet; 105-air inlet interface; 31-housing; 32-end cover; 33-power conversion component; 34-spring; 35-foam agent inlet; 36-foam agent outlet; 37-water inlet; 38-water outlet. DETAILED DESCRIPTION

[0040] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0041] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0042] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0043] Example 1

[0044] See also Figures 1 to 4 , is a press-in emptying head-on foaming dust removal device, comprising a foam dust extinguisher 1 and a foam agent storage box 2; the foam dust extinguisher 1 comprises a foam generator, a foam storage cylinder 14, and a foam nozzle 15 connected in series in sequence; wherein the foam generator comprises a generator housing 12, an air distribution hood 13, and a foaming net 16; one end of the generator housing 12 is connected to the foam storage cylinder 14, and the other end of the generator housing 12 is sealed with a cover 17; an ejector and an air inlet interface 105 are provided on the cover 17; the air distribution hood 13 is installed in the generator housing 12, and divides the inner cavity of the generator housing 12 into an air cavity and a mixing cavity;

[0045] An air inlet interface 105 is arranged on one side of the ejector and communicated with the air cavity. The air inlet interface 105 is connected to compressed gas through the compressed air pipe 6 and introduces the compressed gas into the air cavity; a plurality of air holes are evenly arranged on the air equalizing hood 13 to communicate with the air cavity and the mixing cavity; the ejector is installed at one end of the air equalizing hood 13 and communicated with the mixing cavity, and the foaming net 16 is installed at the other end of the air equalizing hood 13; a pressurized water inlet 103 and a foaming agent inlet 104 are arranged on the ejector; the foaming agent inlet 104 is connected with the foaming agent storage tank 2 through the foaming agent pipe 4, and the pressurized water inlet 103 is used to connect pressurized water, and the ejecting effect of the ejector is utilized to generate negative pressure to eject the foaming agent with pressurized water as the power source, so that the foaming agent is transported from the foaming agent storage tank 2 to the mixing cavity.

[0046] The uniform air hood 13 is conical, the ejector is installed at the small end of the uniform air hood 13 and communicates with the mixing chamber, and the foaming net 16 is installed at the large end of the uniform air hood 13. The ejector is provided with a pressure water inlet 103 and a foaming agent inlet 104; the foaming agent inlet 104 is communicated with the foaming agent storage tank 2 through the foaming agent pipeline 4, and the pressure water inlet 103 is connected to the pressure water through the pressure water pipe 5. The ejection effect of the ejector is used to generate negative pressure to eject the foaming agent with the pressure water as the power source, so that the foaming agent is transported from the foaming agent storage tank 2 to the mixing chamber; the foaming agent and the pressure water are mixed under the ejection effect, and foam is generated on the foaming net 16 under the action of the compressed gas, and the foam is sprayed from the foam nozzle 15 through the foam storage cylinder 14 to remove dust.

[0047] Among them, the ejector includes a nozzle 101 and an ejector tube 102. A diffusion channel is arranged in the ejector tube 102. The nozzle 101 is installed at one end of the diffusion channel, and the other end of the diffusion channel is communicated with the mixing chamber; the pressure water inlet 103 is arranged on the nozzle 101; the foaming agent inlet 104 is arranged on the side wall of the ejector tube 102 and is communicated with the diffusion channel.

[0048] The foaming agent storage box 2 is provided with an emptying device 3 placed in the foaming agent, and the emptying device 3 includes a shell 31, and a pressure water cavity and a foaming agent cavity are provided in the shell 31; a foaming agent inlet 35 and a foaming agent outlet 36 are provided on the side wall of the foaming agent cavity, and the foaming agent inlet 35 is communicated with the inner cavity of the foaming agent storage box 2, and the foaming agent outlet 36 is communicated with the foaming agent inlet 104 through the foaming agent pipe 4;

[0049] An end cover 32 is installed on the pressure water chamber, and a water inlet 37 and a water outlet 38 are provided on the end cover 32; the water inlet 37 is connected to the pressure water through a pipeline, and the water outlet 38 is connected to the pressure water inlet 103 through the pressure water pipe 5; a power conversion component 33 is also provided in the outer shell 31, and the power conversion component 33 uses the pressure water as the power source to transport the foaming agent from the foaming agent chamber to the ejector and discharge the air in the pipeline.

[0050] In this embodiment, the power conversion component 33 is a piston, which is slidably installed in the outer shell 31 and is used to separate the pressure water chamber and the foam agent chamber; a spring 34 is arranged between the piston and the bottom surface of the foam agent chamber, and the spring 34 is used to drive the piston to reset; the piston is used to convert the pressure of the pressure water into power for squeezing the foam agent.

[0051] In this embodiment, a water-gas linkage control valve 7 is also included; the water-gas linkage control valve 7 is provided with a first inlet, a first outlet, a second inlet, and a second outlet; a water inlet pipe 10 is installed on the first inlet for receiving pressurized water; an air inlet pipe 9 is installed on the second inlet for receiving compressed gas.

[0052] The first outlet is connected to the water inlet 37, and the second outlet is connected to the air inlet interface 105. The input of pressurized water and compressed gas is controlled by the water-gas linkage control valve 7. The water-gas linkage control valve 7 is also provided with a water volume regulator 8 for adjusting the input water volume of pressurized water.

[0053] In this embodiment, a vent hole is provided on the top of the foam storage box 2, and an air filter 11 is provided in the vent hole. A joint protection cover 18 is also provided at one end of the generator housing 12 away from the foam storage cylinder 14, and the ejector is arranged in the joint protection cover 18 to protect the ejector.

[0054] When in use, the foam dust extinguisher 1 is installed on the drum arm of the coal machine, so that the dust extinguishing foam outlet is less than 1.5 meters away from the drum, and the drum is always closely followed for foam spraying and covering, so that the dust is adhered and settled at the source by foam, and the coal dust is prevented from escaping. The foam agent storage box 2 is hung in the empty space at the rear end of the tunneling machine, which does not affect the anchor net support of the working face and the treatment of the top of the tunnel.

[0055] The working principle of the press-in emptying head-on foaming dust removal device in this embodiment is as follows: after the system is installed and debugged, when the tunnel boring machine is started, open the valve, and the pressurized water first passes through the water-gas linkage control valve 7, and the air circuit is opened to allow the pressure to quickly reach the head-on foam generator. The pressurized water through the water-gas linkage control valve 7 enters the pressure water chamber of the emptying device 3 in the foam agent storage box 2, and the piston is pushed by the water pressure to overcome the elastic force of the spring 34. During the sliding process of the piston, the foam agent is pressed into the foam agent pipeline 4, and the foam agent is quickly transported to the ejector, and the air in the foam agent pipeline 4 is quickly emptied.

[0056] Under the ejection effect of the pressurized water in the ejector, the foam agent inlet 104 is in a negative pressure state, and the foam agent automatically flows from the foam agent storage box into the ejector under the action of the negative pressure and mixes with the pressurized water; the pressurized water with the foam agent added passively forms a large number of bubbles at the foaming net 16 at the rear end of the gas equalizing hood 13 under the action of the compressed gas, and the bubbles gather in the foam storage cylinder 14 with a very short stroke, and are sprayed toward the tunneling machine drum and the head coal wall through the foam nozzle 15. The foam completely covers the dust generated when the drum cuts coal and rock. Because the foam occurs 100mm at the rear end of the injection port, the loss of foam is very small, which ensures the integrity of the foam and greatly improves the efficiency of foam dust suppression.

[0057] In this embodiment, the emptying device 3 mainly serves the function of emptying at startup, but the pressure water can also be controlled by the water-gas linkage control valve 7 to make the piston reciprocate to achieve the function of continuously pressurizing the foaming agent.

[0058] Example 2

[0059] See also Figures 5 to 7Compared with Example 1, the present embodiment is different in that the power conversion member 33 in the emptying device 3 adopts another structure, that is, the power conversion member 33 is a rotor, the rotor includes an impeller and a screw, the screw is rotatably installed in the foaming agent chamber, the impeller is arranged in the pressure water chamber and is fixedly connected to the screw; the kinetic energy of the pressure water is used to drive the impeller, and the screw is driven to rotate, and the screw is used to squeeze the foaming agent.

[0060] When in use, the rotor not only starts the emptying, but also serves as the power for continuously delivering the foaming agent.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A press-in emptying head-on foaming dust removal device, characterized in that: It comprises a foam dust extinguisher, a foam agent storage box, and a water-gas linkage control valve; the foam dust extinguisher comprises a foam generator, a foam storage cylinder, and a foam nozzle connected in series in sequence; the foam generator comprises a generator shell, an air distribution hood, and a foaming net; one end of the generator shell is connected to the foam storage cylinder, and the other end of the generator shell is provided with a cover; the cover is provided with an ejector and an air inlet interface; the air distribution hood is arranged in the generator shell, and divides the inner cavity of the generator shell into an air cavity and a mixing cavity; the air inlet interface is arranged on one side of the ejector and communicates with the air cavity, and the air inlet interface is used to connect compressed gas and introduce compressed gas into the air cavity; the air distribution hood is provided with a plurality of air holes to communicate with the mixing cavity; The ejector is arranged at one end of the gas-equalizing hood and communicates with the mixing chamber, and the foaming net is arranged at the other end of the gas-equalizing hood; the ejector is provided with a pressure water inlet and a foaming agent inlet; the foaming agent inlet is communicated with the foaming agent storage tank, and the pressure water inlet is used to access the pressure water, and the ejection effect of the ejector is utilized to generate negative pressure to eject the foaming agent with the pressure water as the power source, so that the foaming agent is transported from the foaming agent storage tank to the mixing chamber; the foaming agent and the pressure water are mixed under the ejection effect, and foam is generated on the foaming net under the action of the compressed gas, and the foam is ejected from the foam nozzle through the foam storage cylinder to remove dust; The foam agent storage box is provided with an emptying device placed in the foam agent, and the emptying device includes a shell, and a pressure water chamber and a foam agent chamber are provided in the shell; a foam agent inlet and a foam agent outlet are provided on the side wall of the foam agent chamber, and the foam agent inlet is communicated with the inner cavity of the foam agent storage box, and the foam agent outlet is communicated with the foam agent inlet through a pipeline; a water inlet and a water outlet are provided on the pressure water chamber; the water inlet is connected to the pressure water through a pipeline, and the water outlet is communicated with the pressure water inlet; a power conversion component is also provided in the shell, and the power conversion component uses the pressure water as a power source to transport the foam agent from the foam agent chamber to the ejector and discharge the air in the pipeline; The water-gas linkage control valve is provided with a first inlet, a first outlet, a second inlet and a second outlet; the first inlet is used to connect to pressurized water; the second inlet is used to connect to compressed gas; the first outlet is connected to the water inlet; the second outlet is connected to the air inlet interface; the input of pressurized water and compressed gas is controlled by the water-gas linkage control valve; the ejector includes a nozzle and an ejector tube, a diffusion channel is provided in the ejector tube, the nozzle is provided at one end of the diffusion channel, and the other end of the diffusion channel is communicated with the mixing chamber; the pressurized water inlet is provided on the nozzle; the foaming agent inlet is provided on the side wall of the ejector tube and is communicated with the diffusion channel.

2. The press-in, empty, head-on foaming dust removal device according to claim 1, characterized in that: The power conversion component is a piston, which is slidably arranged in the shell and is used to separate the pressure water chamber and the foam agent chamber; a spring is arranged between the piston and the bottom surface of the foam agent chamber, and the spring is used to drive the piston to reset; the piston is used to convert the pressure of the pressure water into power for squeezing the foam agent.

3. The press-in, empty, head-on foaming dust removal device according to claim 1, characterized in that: The power conversion component is a rotor, which includes an impeller and a screw. The screw is rotatably arranged in the foaming agent chamber, and the impeller is arranged in the pressure water chamber and fixedly connected to the screw. The kinetic energy of the pressure water is used to drive the impeller and drive the screw to rotate, and the screw is used to extrude the foaming agent.

4. The press-in, empty, head-on foaming dust removal device according to claim 1, characterized in that: The water-gas linkage control valve is also provided with a water volume regulator for adjusting the input water volume of the pressurized water.

5. The press-in, empty, head-on foaming dust removal device according to claim 1, characterized in that: The gas-equalizing hood is conical, the ejector is arranged at the small end of the gas-equalizing hood, and the bubbling net is arranged at the large end of the gas-equalizing hood.

6. The press-in, empty, head-on foaming dust removal device according to claim 1, characterized in that: A vent hole is arranged on the top of the foam agent storage box, and an air filter is arranged in the vent hole.

7. The press-in, empty, head-on foaming dust removal device according to claim 1, characterized in that: A joint protection cover is also provided at one end of the generator housing away from the bubble storage cylinder, and the ejector is arranged in the joint protection cover.

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