An integrated foam dust removal device matched with a high-pressure air water system of a fully-mechanized coal mining machine

Abstract

This invention relates to the technical field of tunneling equipment, and discloses an integrated foam dust removal device adapted to the high-pressure air and water system of a tunneling machine. The device includes a high-temperature resistant vent pipe and a high-pressure resistant water supply pipe, a foam agent storage tank connected to the outer ends of the high-temperature resistant vent pipe and the high-pressure resistant water supply pipe respectively, a foam agent mixer connected to the inner cavity of the foam agent storage tank, a foaming tank connected to the other end of the foam agent mixer, a metal wire mesh fixedly connected to the inner wall of the foaming tank, and a foam guide bridge connected to the side of the foaming tank away from the foam agent mixer. By setting a throttling mechanism, this invention can not only automatically control the rotation of the baffle plate and adjust the internal channel area of ​​the foam guide bridge to balance the foam flow rate when the pressure of the external water supply pipeline increases, causing a sudden increase in the foam flow rate within the foam guide bridge, but also, during the rotation of the baffle plate, through the cooperation of multi-faceted cams, protrusions, and tension springs, dampen the rotation of the crossbar, preventing secondary foam breakage caused by high-speed impact during the movement of the baffle plate.

Description

Technical Field

[0001] This invention relates to the technical field of tunneling equipment, and in particular to an integrated foam dust removal device adapted to the high-pressure air and water system of a tunneling machine. Background Technology

[0002] The underground mining face in coal mines is the main source of dust pollution, accounting for more than 85% of the total dust production in the entire mine. Currently, the dust removal systems of roadheaders in coal mines around the world use either forced-in or forced-out ventilation for dilution. This method of dust removal can only passively dilute the dust, but it is difficult to effectively eliminate the dust in real time. Some roadheaders use a submerged dust removal device in the cutting section, which can quickly adsorb the dust generated during cutting, prevent dust from spreading, and further improve dust removal stability and operational safety.

[0003] In existing technologies, some submersible dust removal devices in the cutting section of roadheaders are connected to external water supply pipelines during use. Since the external water supply pipelines are usually subject to pressure fluctuations, when the pressure of the external water supply pipelines increases, the internal water supply pressure of the device will increase accordingly. This increases the foaming intensity and foam production, causing a sudden increase in the flow velocity of the foam in the foam conduction bridge. Consequently, a large number of foams break down, resulting in uneven foaming effect and ultimately a decrease in dust removal efficiency. Summary of the Invention

[0004] In view of the problems existing in the existing integrated foam dust removal device adapted to the high-pressure air and water system of roadheader, the present invention is proposed.

[0005] Therefore, the purpose of this invention is to provide an integrated foam dust removal device that is compatible with the high-pressure air and water system of a roadheader.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: including a dust removal device body disposed on the outside of a roadheader; The main body of the dust removal device includes a high-temperature resistant air pipe and a high-pressure resistant water supply pipe, a foaming agent storage container connected to the outer end face of the high-temperature resistant air pipe and the high-pressure resistant water supply pipe respectively, a foaming agent mixer connected to the inner cavity of the foaming agent storage container, a foaming tank connected to the other end of the foaming agent mixer, a metal wire mesh fixedly connected to the inner wall of the foaming tank, a foam guide bridge connected to the side of the foaming tank away from the foaming agent mixer, and an installation box used to support the foaming tank. It also includes a throttling mechanism, which includes a transmission component that can convert the impact force of the foam flow inside the foam guide bridge into rotational power, a lifting component for converting the rotational power of the transmission component into vertical motion, and an opening and closing component for automatically adjusting the internal channel area of ​​the foam guide bridge in conjunction with the lifting component. The transmission assembly includes an impeller disposed in the inner cavity of the foam guide bridge, a drive column fixedly connected to the inner surface of the impeller, a first bevel gear fixedly sleeved on the through end of the drive column, a second bevel gear meshing with the outer surface of the first bevel gear, and a column fixedly connected to the inner surface of the second bevel gear.

[0007] As a preferred embodiment of the integrated foam dust removal device adapted to the high-pressure air and water system of a roadheader as described in this invention, the faster the foam flows on the inner wall of the foam guide bridge, the faster the rotation speed of the transmission component, the farther the linear movement distance of the lifting component, and the larger the shielding range of the opening and closing component on the foam guide bridge.

[0008] As a preferred embodiment of the integrated foam dust removal device adapted to the high-pressure air and water system of a roadheader as described in this invention, the drive column is rotatably connected to the inner surface of the foam guide bridge, and a rotating bearing seat is installed at the connection between the column and the foam guide bridge.

[0009] As a preferred embodiment of the integrated foam dust removal device adapted to the high-pressure air and water system of a roadheader according to the present invention, the lifting assembly includes a swing arm hinged to the outer surface of the second bevel gear, a counterweight block fixedly connected to the outer end face of the swing arm, a connecting block hinged to the other end of the swing arm, and a sliding wheel hinged to the other end of the connecting block. The sliding wheel is slidably sleeved on the outer surface of the column, and the centrifugal force generated when the swing arm rotates can be transmitted to the counterweight, thereby causing the counterweight to move outward under the centrifugal force.

[0010] As a preferred embodiment of the integrated foam dust removal device adapted to the high-pressure air and water system of a roadheader according to the present invention, the opening and closing assembly includes a fixed rod fixedly connected to the outer surface of the foam guide bridge, a swing rod hinged to the top of the fixed rod, a mounting block fixedly installed on the outer end face of the swing rod, and a force-bearing column fixedly connected to the inner surface of the mounting block and used in conjunction with the sliding wheel. The outer surface of the force-bearing column makes sliding contact with the inner wall of the sliding wheel.

[0011] As a preferred embodiment of the integrated foam dust removal device adapted to the high-pressure air and water system of a roadheader according to the present invention, the opening and closing assembly further includes a driven rod hinged to one end of the swing arm away from the mounting block, a pressure block hinged to the other end of the driven rod, a horizontal column fixedly connected to the inner surface of the pressure block, and a baffle plate fixedly sleeved on the through end of the horizontal column. The horizontal column is rotatably connected to the inner surface of the foam conductive bridge, and the baffle is located in the inner cavity of the foam conductive bridge.

[0012] As a preferred embodiment of the integrated foam dust removal device adapted to the high-pressure air and water system of a roadheader according to the present invention, the throttling mechanism further includes a speed reduction component for reducing the impact force on the foam during the movement of the baffle plate; The deceleration component is located on the outside of the crossbar.

[0013] As a preferred embodiment of the integrated foam dust removal device adapted to the high-pressure air and water system of the roadheader described in this invention, the speed reduction component includes a multi-faceted cam fixedly sleeved on the outer surface of the cross column, an annular frame fixedly connected to the outer surface of the foam guide bridge, a plurality of protrusions slidably connected to the inner surface of the annular frame, and tension springs sequentially fixedly installed at the connection points of the plurality of protrusions.

[0014] As a preferred embodiment of the integrated foam dust removal device adapted to the high-pressure air and water system of the roadheader described in this invention, wherein: a plurality of protrusions are distributed in a circumferential array on the inner side of the ring frame, the through ends of the plurality of protrusions are in sliding contact with the outer surface of the multi-faceted cam, and the ends of the protrusions are abutted against the multi-faceted cam by the elastic tension of the tension spring.

[0015] As a preferred embodiment of the integrated foam dust removal device adapted to the high-pressure air and water system of the roadheader described in this invention, wherein: pressure reducing flow valves are installed on the surface of both the high-temperature resistant vent pipe and the high-pressure resistant water supply pipe; a check valve is installed at the connection between the high-temperature resistant vent pipe and the foam agent storage tank; and a regulating valve and a flow meter are installed at the connection between the high-pressure resistant water supply pipe and the foam agent storage tank. The foaming agent storage container and the foaming tank are both equipped with detection devices on their inner sides. The outer side of the metal wire mesh is equipped with a mixing agent spraying device. The end of the foam guide bridge is connected to the foam storage system. The foaming tank is fixedly installed in the inner cavity of the mounting box.

[0016] The beneficial effects of this invention are as follows: By setting up a throttling mechanism, this invention can not only automatically control the rotation of the baffle plate and adjust the internal channel area of ​​the foam guide bridge to balance the foam flow rate when the pressure of the external water supply pipeline increases and causes a sudden increase in the foam flow rate, but also, when the baffle plate rotates, the multi-faceted cam, protrusion and tension spring work together to form a damping buffer for the rotation of the cross column, avoiding secondary breakage of the foam caused by high-speed impact during the movement of the baffle plate. This achieves the effect of ensuring the integrity of foam delivery while ensuring the dust removal efficiency of the main dust removal device and the safety of the roadheader operation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the internal structure of the mounting box in this invention.

[0019] Figure 3 For the present invention Figure 2 A magnified schematic diagram of the local structure at point A in the middle.

[0020] Figure 4 This is a schematic diagram of the internal structure of the foam conductive bridge in this invention.

[0021] Figure 5 For the present invention Figure 4 A magnified schematic diagram of the local structure at point B.

[0022] Figure 6 For the present invention Figure 4 A magnified schematic diagram of the local structure at point C.

[0023] Figure 7 This is a schematic diagram of the overall structure of the deceleration component in this invention.

[0024] In the diagram: 100, main body of the dust removal device; 110, high-temperature resistant ventilation pipe; 120, high-pressure resistant water supply pipe; 130, foaming agent storage tank; 140, foaming agent mixer; 150, foaming tank; 160, metal wire mesh; 170, foam guide bridge; 180, mounting box; 200, throttling mechanism; 210, transmission assembly; 211, impeller; 212, drive column; 213, first bevel gear; 214, second bevel gear; 215, vertical... Column; 220, Lifting assembly; 221, Swing arm; 222, Counterweight; 223, Connecting block; 224, Pulley; 230, Opening and closing assembly; 231, Fixed rod; 232, Swing arm; 233, Mounting block; 234, Force-bearing column; 235, Driven rod; 236, Pressure block; 237, Horizontal column; 238, Baffle; 240, Speed ​​reduction assembly; 241, Multi-faceted cam; 242, Ring frame; 243, Protrusion; 244, Tension spring. Detailed Implementation

[0025] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0028] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0029] Example 1 Reference Figures 1-6 The first embodiment of the present invention provides an integrated foam dust removal device adapted to the high-pressure air and water system of a roadheader. The device includes a dust removal device body 100 disposed on the outside of the roadheader. The main body 100 of the dust removal device includes a high-temperature resistant vent pipe 110 and a high-pressure resistant water supply pipe 120, a foaming agent storage tank 130 connected to the outer end faces of the high-temperature resistant vent pipe 110 and the high-pressure resistant water supply pipe 120 respectively, a foaming agent mixer 140 connected to the inner cavity of the foaming agent storage tank 130, a foaming tank 150 connected to the other end of the foaming agent mixer 140, a metal wire mesh 160 fixedly connected to the inner wall of the foaming tank 150, a foam guide bridge 170 connected to the side of the foaming tank 150 away from the foaming agent mixer 140, and an installation box 180 used to support the foaming tank 150. It should be noted that the high-temperature resistant vent pipe 110 is used to provide high-pressure gas to the main body 100 of the dust removal device. It serves as the power source for foam flow and provides the necessary gas source for the foaming process. A pressure reducing flow valve is installed on its surface, which can reduce the pressure of the high-pressure gas to the stable pressure required for foaming and prevent the high-pressure gas from breaking the foam. The high-pressure water supply pipe 120 is used to provide high-pressure water to the main body 100 of the dust removal device. As a solvent for the foaming agent, it has a pressure reducing flow valve installed on its surface, which can reduce the pressure of the externally fluctuating high-pressure water, initially stabilize the water supply pressure, and match the pressure reducing gas of the high-temperature resistant vent pipe 110 to ensure the gas-liquid mixing ratio. The foaming agent storage tank 130 is used to store foaming agent and provide raw materials for foam preparation. The detection device installed inside it can monitor the remaining amount of foaming agent in real time to ensure the continuity of supply. The check valve installed at the connection between it and the high-temperature resistant vent pipe 110 can prevent foaming agent from flowing back into the vent pipe and causing pipeline blockage. The regulating valve and flow meter installed at the connection between it and the high-pressure resistant water supply pipe 120 can accurately control the mixing ratio of water and foaming agent. The foaming agent mixer 140 is used to receive foaming agent from foaming agent storage tank 130, depressurized gas from high temperature vent pipe 110, and depressurized water from high pressure water supply pipe 120, so that the three are fully mixed, thereby preparing raw materials for subsequent foaming. The foaming tank 150 is a cavity for foam molding. The detection device installed inside the tank is used to monitor the liquid level of the mixture and the foaming pressure, thereby ensuring a stable foaming environment. The metal wire mesh 160 is used to provide a large contact area for the foaming of the mixture. When the high-pressure gas-liquid mixture passes through the metal wire mesh 160, it is cut into fine bubbles to form qualified dust removal foam. The mixing agent spraying device set on its outer side is used to spray the mixture evenly onto the surface of the metal wire mesh 160 to improve the foaming efficiency and foam fineness. The foam guide bridge 170 is a channel for foam transportation. It is used to connect the foaming tank 150 with the foam storage system and the cutting section of the roadheader, so as to accurately transport the foam formed by the foaming tank 150 to the dust generation source and perform submerged dust removal on the cutting section. The mounting box 180 is used to fix and protect the foaming tank 150, preventing the foaming tank 150 from shifting due to vibration or collision, thereby enabling the foaming tank 150 to adapt to the complex working environment in the coal mine.

[0030] It also includes a throttling mechanism 200, which includes a transmission component 210 that can convert the impact force of the foam flow inside the foam guide bridge 170 into rotational power, a lifting component 220 for converting the rotational power of the transmission component 210 into vertical motion, and an opening and closing component 230 for automatically adjusting the internal channel area of ​​the foam guide bridge 170 in coordination with the lifting component 220. The transmission assembly 210 includes an impeller 211 disposed in the inner cavity of the foam guide bridge 170, a drive column 212 fixedly connected to the inner surface of the impeller 211, a first bevel gear 213 fixedly sleeved on the through end of the drive column 212, a second bevel gear 214 meshing with the outer surface of the first bevel gear 213, and a column 215 fixedly connected to the inner surface of the second bevel gear 214.

[0031] It should be explained that the impeller 211 uses a custom-made mining foam guide impeller KFL-Φ80-6Z, with an outer diameter of 80mm, an inner diameter of 25mm, 6 blades, a blade height of 15mm, a blade curvature of R30mm, and an impeller thickness of 10mm. All blades are arc-shaped guide vanes, which can not only maximize the absorption of the impact force of foam flow and improve the efficiency of rotational power conversion, but also reduce the flow resistance of foam and avoid foam breakage caused by blade impact. When the foam flows through the inner cavity of the foam guide bridge 170, it impacts the blades of the impeller 211, causing the impeller 211 to rotate. The faster the foam flow rate, the faster the impeller 211 rotates. The drive column 212 is used to transmit the rotational power of the impeller 211 to the first bevel gear 213, and then through the cooperation of the first bevel gear 213 and the second bevel gear 214, drive the column 215 to rotate synchronously.

[0032] Specifically, the faster the foam flows on the inner wall of the foam guide bridge 170, the faster the transmission component 210 rotates, the farther the lifting component 220 moves in a straight line, and the larger the blocking range of the opening and closing component 230 on the foam guide bridge 170.

[0033] Furthermore, the drive column 212 is rotatably connected to the inner surface of the foam guide bridge 170, and a rotating bearing seat is installed at the connection between the column 215 and the foam guide bridge 170.

[0034] Preferably, the lifting assembly 220 includes a swing arm 221 hinged to the outer surface of the second bevel gear 214, a counterweight block 222 fixedly connected to the outer end face of the swing arm 221, a connecting block 223 hinged to the other end of the swing arm 221, and a sliding wheel 224 hinged to the other end of the connecting block 223. The sliding wheel 224 is slidably sleeved on the outer surface of the column 215. When the swing arm 221 rotates, the centrifugal force generated can be transmitted to the counterweight 222, thereby causing the counterweight 222 to move outward under the centrifugal force.

[0035] It should also be noted that when the swing arm 221 rotates synchronously with the second bevel gear 214, it generates centrifugal force, which drives the counterweight 222 to move outward. The centrifugal force increases as the rotation speed of the swing arm 221 increases, and the counterweight 222 moves further outward. When the counterweight 222 moves outward, the connecting block 223 moves through the swing arm 221, and then the sliding wheel 224 slides vertically along the surface of the column 215 through the connecting block 223.

[0036] The opening and closing assembly 230 includes a fixed rod 231 fixedly connected to the outer surface of the foam guide bridge 170, a swing rod 232 hinged to the top of the fixed rod 231, a mounting block 233 fixedly installed on the outer end face of the swing rod 232, and a force-bearing column 234 fixedly connected to the inner surface of the mounting block 233 and used in conjunction with the sliding wheel 224. The outer surface of the force-bearing column 234 slides in contact with the inner wall of the sliding wheel 224.

[0037] Preferably, the opening and closing assembly 230 also includes a driven rod 235 hinged to one end of the rocker arm 232 away from the mounting block 233, a pressure block 236 hinged to the other end of the driven rod 235, a crossbar 237 fixedly connected to the inner surface of the pressure block 236, and a baffle 238 fixedly sleeved on the through end of the crossbar 237. The horizontal column 237 is rotatably connected to the inner surface of the foam bridge 170, and the baffle 238 is located in the inner cavity of the foam bridge 170.

[0038] It should be explained that the fixed rod 231 is used to provide hinge support for the swing rod 232. After the force column 234 receives the lifting force from the sliding wheel 224, it transmits the lifting force to the swing rod 232 through the mounting block 233, driving the swing rod 232 to rotate around the hinge point. The driven rod 235 swings synchronously with the rotation of the swing rod 232 and applies pressure to the pressure block 236, thereby causing the pressure block 236 to drive the horizontal column 237 to rotate. Then, the horizontal column 237 drives the baffle 238 to rotate. When the baffle 238 rotates synchronously with the horizontal column 237, it forms a shield for the internal channel of the foam guide bridge 170. The larger the rotation angle of the horizontal column 237, the larger the shielding range of the baffle 238, and the smaller the channel area of ​​the foam guide bridge 170, thereby balancing the foam flow rate.

[0039] When using, The dust removal device body 100 is installed on the outside of the roadheader. The high-temperature resistant ventilation pipe 110 is connected to the high-pressure air system of the roadheader, and the high-pressure resistant water supply pipe 120 is connected to the high-pressure water system. After the high-pressure air is reduced in pressure by the pressure reducing flow valve of the high-temperature resistant ventilation pipe 110, it enters the foaming agent storage tank 130 together with the high-pressure water after pressure reduction by the high-pressure water supply pipe 120. It is mixed with the foaming agent inside according to the ratio set by the regulating valve and the flow meter. The mixture enters the foaming agent mixer 140 and is fully mixed before being sent to the foaming tank 150. It is cut by the metal wire mesh 160 to form fine dust removal foam. The mixture spray device enhances the foaming effect. The formed foam is transported to the cutting section of the roadheader through the foam guide bridge 170 to achieve submerged dust removal. During this process, impeller 211 continues to rotate due to the impact of the foam; When external water pressure fluctuations cause a sudden increase in the foam flow rate within the foam guide bridge 170, the impact force of the foam causes the impeller 211 to rotate at high speed. The drive column 212 rotates synchronously with the impeller 211 and drives the column 215 to rotate through the first bevel gear 213 and the second bevel gear 214. The swing arm 221 rotates with the second bevel gear 214, generating centrifugal force that drives the counterweight 222 to move outward, causing the connecting block 223 and the sliding wheel 224 to slide along the column 215. The sliding wheel 224 lifts the force-bearing column 234 and drives the swing rod 232 to rotate around the fixed rod 231 through the mounting block 233. The driven rod 235 swings with the swing rod 232 to apply pressure to the pressure block 236, causing the horizontal column 237 and the baffle 238 to rotate. The baffle 238 forms a barrier on the channel of the foam guide bridge 170. The faster the foam flow rate, the larger the barrier area. The channel area is automatically adjusted to balance the flow rate and prevent foam breakage. Each detection device monitors the operating status in real time. If it is necessary to stop the operation, simply cut off the high-pressure air and water supply to the roadheader.

[0040] In summary, by setting up the transmission component 210, the lifting component 220, and the opening and closing component 230, when the pressure of the external water supply pipeline increases and the foam flow rate in the foam guide bridge 170 suddenly increases, the internal channel area of ​​the foam guide bridge 170 can be automatically adjusted to balance the foam flow rate, avoid a large number of foam breakages due to excessive flow rate, and ensure that the foam maintains a stable foaming state during the conveying process, so as to achieve the effect of ensuring the dust removal efficiency of the main body of the dust removal device 100 and the safety of the roadheader operation.

[0041] Example 2 Reference Figure 6 and Figure 7 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that this embodiment provides a deceleration component 240 for preventing secondary breakage of foam caused by high-speed impact during the movement of the baffle 238.

[0042] It should be noted that the throttling mechanism 200 also includes a deceleration component 240 for reducing the impact force on the foam during the movement of the baffle 238; The speed reduction component 240 is located on the outside of the crossbar 237.

[0043] Furthermore, the deceleration assembly 240 includes a multi-faceted cam 241 fixedly sleeved on the outer surface of the crossbar 237, an annular frame 242 fixedly connected to the outer surface of the foam guide bridge 170, a plurality of protrusions 243 slidably connected to the inner surface of the annular frame 242, and tension springs 244 sequentially fixedly installed at the connection points of the plurality of protrusions 243.

[0044] Furthermore, multiple protrusions 243 are arranged in a circumferential array on the inner side of the ring frame 242. The through ends of the multiple protrusions 243 are in sliding contact with the outer surface of the multifaceted cam 241, and the ends of the protrusions 243 are resisted by the elastic tension of the tension spring 244 against the multifaceted cam 241.

[0045] Among them, pressure reducing flow valves are installed on the surface of the high temperature vent pipe 110 and the high pressure water supply pipe 120, a check valve is installed at the connection between the high temperature vent pipe 110 and the foaming agent storage tank 130, and a regulating valve and a flow meter are installed at the connection between the high pressure water supply pipe 120 and the foaming agent storage tank 130. Both the foaming agent storage container 130 and the foaming tank 150 are equipped with detection devices on their inner sides. The metal wire mesh 160 is equipped with a mixing agent spraying device on its outer side. The end of the foam guide bridge 170 is connected to the foam storage system. The foaming tank 150 is fixedly installed in the inner cavity of the mounting box 180.

[0046] It is worth noting that the multifaceted cam 241 can rotate synchronously with the cross column 237. During its rotation, the cam structure pushes the protrusion 243 to slide along the inner surface of the ring frame 242. During this process, the tension spring 244 provides elastic tension to the protrusion 243, so that the end of the protrusion 243 is always in close contact with the outer surface of the multifaceted cam 241, thereby continuously buffering the rotational speed of the multifaceted cam 241 and the cross column 237.

[0047] When using, When the horizontal column 237 rotates and drives the baffle 238 to block the foam guide bridge 170 channel, it drives the multi-faceted cam 241 to rotate synchronously. The multi-faceted cam 241 pushes the protrusion 243 to slide along the ring frame 242 through its own convex structure. The elastic tension of the tension spring 244 makes the protrusion 243 and the multi-faceted cam 241 closely abut against each other, forming a damping buffer for the rotation of the horizontal column 237, reducing the impact of the movement of the baffle 238 on the foam, and preventing a large number of foams from breaking.

[0048] In summary, by setting up the speed reduction component 240, not only can the rotation of the cross column 237 be damped and buffered when the cross column 237 drives the baffle 238 to rotate and adjust the channel area of ​​the foam guide bridge 170, but also the multi-faceted cam 241, the protrusion 243 and the tension spring 244 can be coordinated to avoid secondary breakage of the foam caused by high-speed impact during the movement of the baffle 238. This ensures the integrity of the foam delivery and further guarantees the efficiency of the submerged dust removal of the cutting section of the roadheader.

[0049] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0050] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An integrated foam dust removal device adapted to the high-pressure air-water system of a roadheader, characterized in that: The dust removal device includes a main body (100) located on the outside of the roadheader; the main body (100) includes a high-temperature resistant vent pipe (110) and a high-pressure resistant water supply pipe (120), a foaming agent reservoir (130) connected to the outer end faces of the high-temperature resistant vent pipe (110) and the high-pressure resistant water supply pipe (120) respectively, a foaming agent mixer (140) connected to the inner cavity of the foaming agent reservoir (130), a foaming tank (150) connected to the other end of the foaming agent mixer (140), a metal wire mesh (160) fixedly connected to the inner wall of the foaming tank (150), a foam guide bridge (170) connected to the side of the foaming tank (150) away from the foaming agent mixer (140), and an installation box (180) used to support the foaming tank (150); It also includes a throttling mechanism (200), which includes a transmission component (210) capable of converting the impact force of the foam flow inside the foam guide bridge (170) into rotational power, a lifting component (220) for converting the rotational power of the transmission component (210) into vertical motion, and an opening and closing component (230) for automatically adjusting the internal channel area of ​​the foam guide bridge (170) in coordination with the lifting component (220). The transmission assembly (210) includes an impeller (211) disposed in the inner cavity of the foam guide bridge (170), a drive column (212) fixedly connected to the inner surface of the impeller (211), a first bevel gear (213) fixedly sleeved on the through end of the drive column (212), a second bevel gear (214) meshing with the outer surface of the first bevel gear (213), and a column (215) fixedly connected to the inner surface of the second bevel gear (214).

2. The integrated foam dust removal device adapted to the high-pressure air and water system of a roadheader according to claim 1, characterized in that: The faster the foam flows on the inner wall of the foam guide bridge (170), the faster the rotation speed of the transmission component (210), the farther the linear movement distance of the lifting component (220), and the larger the blocking range of the opening and closing component (230) on the foam guide bridge (170).

3. The integrated foam dust removal device adapted to the high-pressure air and water system of a roadheader according to claim 2, characterized in that: The drive column (212) is rotatably connected to the inner surface of the foam guide bridge (170), and a rotating bearing seat is installed at the connection between the column (215) and the foam guide bridge (170).

4. The integrated foam dust removal device adapted to the high-pressure air and water system of a roadheader according to claim 3, characterized in that: The lifting assembly (220) includes a swing arm (221) hinged to the outer surface of the second bevel gear (214), a counterweight block (222) fixedly connected to the outer end face of the swing arm (221), a connecting block (223) hinged to the other end of the swing arm (221), and a sliding wheel (224) hinged to the other end of the connecting block (223). The sliding wheel (224) is slidably sleeved on the outer surface of the column (215). The centrifugal force generated when the swing arm (221) rotates can be transmitted to the counterweight (222), thereby causing the counterweight (222) to move outward under centrifugal force.

5. The integrated foam dust removal device adapted to the high-pressure air and water system of a roadheader according to claim 4, characterized in that: The opening and closing assembly (230) includes a fixed rod (231) fixedly connected to the outer surface of the foam guide bridge (170), a swing rod (232) hinged to the top of the fixed rod (231), a mounting block (233) fixedly installed on the outer end face of the swing rod (232), and a force-bearing column (234) fixedly connected to the inner surface of the mounting block (233) and used in conjunction with the sliding wheel (224). The outer surface of the force-bearing column (234) slides in contact with the inner wall of the sliding wheel (224).

6. The integrated foam dust removal device adapted to the high-pressure air and water system of a roadheader according to claim 5, characterized in that: The opening and closing assembly (230) further includes a driven rod (235) hinged to one end of the swing rod (232) away from the mounting block (233), a pressure block (236) hinged to the other end of the driven rod (235), a horizontal column (237) fixedly connected to the inner surface of the pressure block (236), and a baffle (238) fixedly sleeved on the through end of the horizontal column (237). The crossbar (237) is rotatably connected to the inner surface of the foam bridge (170), and the baffle (238) is located in the inner cavity of the foam bridge (170).

7. The integrated foam dust removal device adapted to the high-pressure air and water system of a roadheader according to claim 6, characterized in that: The throttling mechanism (200) also includes a deceleration component (240) for reducing the impact force on the foam during the movement of the baffle (238). The deceleration component (240) is located on the outside of the crossbar (237).

8. The integrated foam dust removal device adapted to the high-pressure air and water system of a roadheader according to claim 7, characterized in that: The deceleration assembly (240) includes a multi-faceted cam (241) fixedly sleeved on the outer surface of the cross column (237), an annular frame (242) fixedly connected to the outer surface of the foam guide bridge (170), a plurality of protrusions (243) slidably connected to the inner surface of the annular frame (242), and a tension spring (244) sequentially fixedly installed at the connection of the plurality of protrusions (243).

9. The integrated foam dust removal device adapted to the high-pressure air and water system of a roadheader according to claim 8, characterized in that: Multiple protrusions (243) are arranged in a circumferential array on the inner side of the ring frame (242). The through ends of the multiple protrusions (243) slide in contact with the outer surface of the multifaceted cam (241), and the ends of the protrusions (243) abut against the multifaceted cam (241) by the elastic tension of the tension spring (244).

10. The integrated foam dust removal device adapted to the high-pressure air and water system of a roadheader according to claim 9, characterized in that: The surfaces of the high-temperature resistant vent pipe (110) and the high-pressure resistant water supply pipe (120) are both equipped with pressure reducing flow valves. A check valve is installed at the connection between the high-temperature resistant vent pipe (110) and the foaming agent storage tank (130). A regulating valve and a flow meter are installed at the connection between the high-pressure resistant water supply pipe (120) and the foaming agent storage tank (130). The inner sides of the foaming agent storage container (130) and the foaming tank (150) are equipped with detection devices. The outer side of the wire mesh (160) is provided with a mixing agent spraying device. The end of the foam guide bridge (170) is connected to the foam storage system. The foaming tank (150) is fixedly installed in the inner cavity of the mounting box (180).

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