Coal mining machine onboard foam dust settling device with double foaming valve blocks

Abstract

The invention discloses a coal mining machine onboard foam dust-settling device containing double foaming valve blocks, which comprises a shell, a foam valve block, a foam valve block, a foam valve block, a foam valve block, a foam valve block, a foam valve block and a foam valve block, the angle adjusting mechanism is mounted on the coal mining machine, and one end of the angle adjusting mechanism is rotationally connected with the shell; the foam generating mechanism comprises a material box, two foaming assemblies and a material suction assembly, and the material suction assembly is connected with the material box; and the foam injection mechanism comprises a left foam injection assembly and a right foam injection assembly, the left foam injection assembly is arranged at a cutting roller at the right end of the coal mining machine, a telescopic arm is installed at the right end of the shell, and the right foam injection assembly is installed on the telescopic arm. According to the invention, dust particles can be quickly adsorbed, the dust concentration of a coal mining operation site is greatly reduced, the harm of dust to the health of operators is reduced, the hidden danger of dust explosion is avoided, and the underground operation safety is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of dust control technology for coal mining machines, and in particular to an onboard foam dust suppression device for coal mining machines containing a double foaming valve block. Background Technology

[0002] In longwall mining operations, drum-type coal mining machines generate a large amount of dust when cutting coal. This not only seriously endangers the health of workers but also affects the normal operation of equipment and mine production safety. Therefore, dust suppression technology is a crucial aspect of coal mining operations. Traditional coal mining machines mostly use external spray dust suppression, but this method has many drawbacks: the nozzles are easily clogged by dust, making maintenance difficult, and requiring a continuous supply of large-volume water, which not only wastes water resources but also leads to equipment corrosion and rust, while significantly increasing the moisture content of coal and affecting coal quality. In addition, water mist has a weak wetting ability for coal dust, resulting in low dust suppression efficiency and further deteriorating the underground working environment. To improve dust suppression, existing foam dust suppression technology has been gradually applied, but it still has obvious drawbacks: the device is large in size and occupies a lot of space, which will restrict the layout and operation of other equipment in the limited working space of the mine; the integration and installation with the coal mining machine is difficult, requiring a major modification of the coal mining machine, which increases the complexity and workload of the installation; the foam spraying distance is relatively short, and the underground environment of the mine is harsh, so the device is prone to damage and failure, resulting in a significant increase in maintenance costs and workload. At the same time, existing foam dust suppression devices also have problems such as high water pressure requirements and easy damage to nozzles, which make it difficult to meet the actual needs of efficient dust suppression in fully mechanized mining faces. Summary of the Invention

[0003] The purpose of this invention is to provide an onboard foam dust suppression device for coal mining machines containing a double foaming valve block, so as to solve the problems existing in the prior art.

[0004] To achieve the above objectives, the present invention provides the following solution: The present invention provides an onboard foam dust suppression device for coal mining machines containing a double-foaming valve block, comprising: The housing is rotatably connected to the head of the coal mining machine via a connecting assembly; An angle adjustment mechanism is installed on the coal mining machine, one end of which is rotatably connected to the housing, and the angle adjustment mechanism is used to adjust the angle of the housing; A foam generating mechanism, comprising a material hopper, two sets of foaming components, and a material suction component. The material suction component is installed inside the housing, the material hopper is installed on the side wall of the housing, both sets of foaming components are installed inside the housing, the material suction component is connected to the material hopper, the foaming component is connected to the compressed air pipeline, and both sets of foaming components are connected to the material suction component. A foam spraying mechanism, comprising a left foam spraying assembly and a right foam spraying assembly, wherein the left foam spraying assembly is arranged at the right end of the cutting drum of the coal mining machine, a telescopic arm is installed at the right end of the housing, the right foam spraying assembly is installed on the telescopic arm, and the left foam spraying assembly and the right foam spraying assembly are respectively connected to two sets of foaming assemblies.

[0005] According to the present invention, the on-board foam dust suppression device for a coal mining machine with a double foaming valve block includes a connecting assembly comprising a support base, the support base being fixed to the head of the coal mining machine, a connecting seat being rotatably connected to the support base via a first pin assembly, the connecting seat being fixedly connected to the housing via a second pin assembly, and a protective plate assembly being installed on the outer wall of the housing.

[0006] According to the present invention, the on-board foam dust suppression device for a coal mining machine with a double foaming valve block includes an angle adjustment mechanism comprising a support plate, the support plate being fixed to the head of the coal mining machine, a hydraulic cylinder being rotatably connected to the support plate, a connecting lug being fixedly connected to the bottom of the housing, and the output end of the hydraulic cylinder being rotatably connected to the connecting lug via a third pin assembly.

[0007] According to the present invention, the on-board foam dust suppression device for a coal mining machine with dual foaming valve blocks includes a foaming component comprising a foaming valve block arranged inside the housing. The air inlet of the foaming valve block is connected to the compressed air pipeline, and the water inlet of the foaming valve block is connected to the suction component via a water supply pipe.

[0008] According to the present invention, the on-board foam dust suppression device for a coal mining machine with a dual foaming valve block includes a suction assembly comprising a suction valve block, the suction valve block being installed inside the housing and connected to the foaming valve block.

[0009] According to the present invention, the on-board foam dust suppression device for a coal mining machine with dual foaming valve blocks includes a left foam injection assembly comprising a left foam nozzle seat, which is installed on the head of the coal mining machine and is arranged corresponding to the cutting drum at the left end of the head of the coal mining machine. The left foam nozzle seat is connected to one of the foaming valve blocks.

[0010] According to the present invention, the on-board foam dust suppression device for a coal mining machine with dual foaming valve blocks includes a right foam injection assembly comprising a right foam nozzle seat, which is mounted on the telescopic arm. The right foam nozzle seat is connected to another set of foaming valve blocks via a hose assembly. The right foam nozzle seat is arranged correspondingly to the cutting roller at the right end of the coal mining machine head.

[0011] According to the present invention, the on-board foam dust suppression device for a coal mining machine with dual foaming valve blocks is provided in which the output end of the suction valve block is connected to a connecting pipe, one end of the connecting pipe is connected to one of the foaming valve blocks, and an elbow is installed on the connecting pipe, the elbow being connected to another set of foaming valve blocks via a flexible hose.

[0012] According to the present invention, a coal mining machine on-board foam dust suppression device with a double foaming valve block is provided, wherein a filter assembly is installed on the water inlet pipe.

[0013] The present invention discloses the following technical effects: This invention employs a dual-foaming assembly that operates synchronously, working in conjunction with two sets of foam spraying components on the left and right sides. These components correspond to different dust-generating areas of the coal mining machine's cutting drum. The left component is fixedly positioned to cover the right end of the cutting drum, while the right component's position is flexibly adjusted via a telescopic arm. Combined with an angle adjustment mechanism to optimize the spraying angle, this allows the foam to precisely cover all dust-generating points. The foam makes full contact with the dust, quickly adsorbing dust particles and significantly reducing the dust concentration at the coal mining site. This reduces the health hazards of dust to workers, avoids the risk of dust explosions, and ensures safety during underground operations.

[0014] The housing is rotatably connected to the head of the coal mining machine via a connecting component. The angle adjustment mechanism can flexibly adjust the angle of the housing and the spraying component. The telescopic arm can adjust the installation position of the right foam spraying component. The foam spraying parameters can be adjusted according to the working height and angle changes of the coal mining machine's cutting drum. At the same time, the dual foaming components can flexibly adjust the foaming amount according to the dust generation, adapting to the dust reduction requirements under different cutting intensities, and ensuring a stable dust reduction effect even in complex operating scenarios.

[0015] The components of the device are rationally arranged. The material bin is installed on the side wall of the shell for easy addition of dust-suppressing agents. The suction component and the dual foaming component are integrated into the shell, providing good protection and facilitating maintenance. The dual foaming components operate independently without interference. If one component fails, the other can continue to operate normally, avoiding a shutdown of the entire device that would affect coal mining operations. At the same time, it simplifies the maintenance process and reduces maintenance costs. The connecting components are easy to disassemble, facilitating the installation, commissioning, and subsequent maintenance of the device. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in 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.

[0017] Figure 1 This is a front view of the onboard foam dust suppression device for a coal mining machine containing a double foaming valve block according to the present invention; Figure 2This is a top view of the onboard foam dust suppression device for a coal mining machine containing a double foaming valve block according to the present invention; Figure 3 This is a top view of the coal mining machine head of the present invention; Figure 4 This is a front view of the coal mining machine head of the present invention.

[0018] The components are as follows: 1. Shell; 2. Material box; 3. Compressed air pipeline; 4. Support base; 5. Connecting base; 6. Protective plate assembly; 7. Support plate; 8. Hydraulic cylinder; 9. Connecting ear; 10. Foaming valve block; 11. Suction valve block; 12. Left foam nozzle seat; 13. Right foam nozzle seat; 14. Connecting pipe; 15. Elbow; 16. Filter. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Reference Figures 1-4 This invention provides an onboard foam dust suppression device for coal mining machines containing a double-foaming valve block, comprising: Housing 1 is rotatably connected to the head of the coal mining machine via a connecting assembly; An angle adjustment mechanism is installed on the coal mining machine. One end of the angle adjustment mechanism is rotatably connected to the housing 1. The angle adjustment mechanism is used to adjust the angle of the housing 1. The foam generating mechanism includes a material box 2, two sets of foaming components and a suction component. The suction component is installed inside the housing 1, the material box 2 is installed on the side wall of the housing 1, both sets of foaming components are installed inside the housing 1, the suction component is connected to the material box 2, the foaming component is connected to the compressed air pipeline 3, and both sets of foaming components are connected to the suction component. The foam spraying mechanism includes a left foam spraying component and a right foam spraying component. The left foam spraying component is located at the right end of the cutting drum of the coal mining machine. A telescopic arm is installed at the right end of the housing 1. The right foam spraying component is installed on the telescopic arm. The left foam spraying component and the right foam spraying component are respectively connected to two sets of foaming components.

[0022] First, the angle of housing 1 is adjusted using the angle adjustment mechanism to adapt to the cutting operation of the coal mining machine. The connecting components ensure stable rotation of housing 1 during angle adjustment and reliable connection with the coal mining machine head. After the device is started, the suction component begins to work, drawing dust-suppressing agent from the material box 2 installed on the side wall of housing 1. At the same time, compressed air is introduced into the two sets of foaming components through the compressed air pipeline 3. The two sets of foaming components operate synchronously, fully mixing and foaming the agent delivered by the suction component with the compressed air to generate high-density, high-stability dust-suppressing foam. Subsequently, the two sets of foaming components deliver the foam to the corresponding left and right foam spraying components. The left foam spraying component precisely sprays foam at the dust-generating point of the cutting drum on the right end of the coal mining machine. The right foam spraying component adjusts its position via the telescopic arm on the right end of housing 1 and sprays foam at the corresponding dust-generating area. Throughout the process, the spraying angle and position are flexibly adjusted using the angle adjustment mechanism and the telescopic arm to ensure that the foam fully covers the dust generated by the cutting drum operation of the coal mining machine, achieving efficient dust suppression.

[0023] The scheme is further optimized. The connecting component includes a support base 4, which is fixed to the head of the coal mining machine. A connecting seat 5 is rotatably connected to the support base 4 through a first pin assembly. The connecting seat 5 is fixedly connected to the housing 1 through a second pin assembly. A protective plate assembly 6 is installed on the outer wall of the housing 1.

[0024] Further optimization of the scheme: the angle adjustment mechanism includes a support plate 7, which is fixed to the head of the coal mining machine. A hydraulic cylinder 8 is rotatably connected to the support plate 7. A connecting ear 9 is fixedly connected to the bottom of the housing 1. The output end of the hydraulic cylinder 8 is rotatably connected to the connecting ear 9 through a third pin assembly.

[0025] Further optimization of the scheme: the foaming component includes a foaming valve block 10, which is arranged inside the housing 1. The air inlet of the foaming valve block 10 is connected to the compressed air pipeline 3, and the water inlet of the foaming valve block 10 is connected to the suction component through a water supply pipe.

[0026] The solution is further optimized so that the material suction assembly includes a material suction valve block 11, which is installed inside the housing 1 and is connected to the foaming valve block 10.

[0027] Further optimization of the scheme: the left foam spraying assembly includes a left foam nozzle seat 12, which is installed on the head of the coal mining machine and is arranged corresponding to the cutting drum at the left end of the coal mining machine head. The left foam nozzle seat 12 is connected to one of the foaming valve blocks 10.

[0028] Further optimization of the scheme: the right foam spraying assembly includes a right foam nozzle seat 13, which is installed on the telescopic arm. The right foam nozzle seat 13 is connected to another set of foaming valve blocks 10 through a hose assembly. The right foam nozzle seat 13 is arranged corresponding to the cutting drum at the right end of the coal mining machine head.

[0029] In a further optimized design, the output end of the suction valve block 11 is connected to a connecting pipe 14. One end of the connecting pipe 14 is connected to one of the foaming valve blocks 10. An elbow 15 is installed on the connecting pipe 14, and the elbow 15 is connected to another set of foaming valve blocks 10 through a hose.

[0030] The design has been further optimized by installing a filter assembly 16 on the water inlet pipe.

[0031] When the device is working, the angle of the housing 1 is first adjusted by the angle adjustment mechanism to adapt to the coal mining operation conditions: the support plate 7 of the angle adjustment mechanism is fixed to the head of the coal mining machine, and the hydraulic cylinder 8 is rotatably connected to the support plate 7. Its output end is rotatably connected to the connecting lug 9 at the bottom of the housing 1 through the third pin assembly. The extension and retraction of the hydraulic cylinder 8 can precisely drive the housing 1 to rotate, thereby realizing the angle adjustment. The connecting assembly ensures the stable rotation of the housing 1. The support seat 4 is fixed to the head of the coal mining machine, and the connecting seat 5 is rotatably connected to the support seat 4 through the first pin assembly, and then fixed to the housing 1 through the second pin assembly. The protective plate assembly 6 on the outer wall of the housing 1 can protect the internal components. After the device is started, the suction valve block 11 of the suction assembly begins to work, drawing dust-suppressing agent from the material box 2 on the side wall of the housing 1. The compressed air pipeline 3 first filters impurities through the filter 16 assembly, then introduces clean compressed air into the foaming valve blocks 10 of the two foaming assemblies. The suction valve block 11 is connected to one set of foaming valve blocks 10 via a connecting pipe 14. The elbow 15 on the connecting pipe 14 is connected to the other set of foaming valve blocks 10 via a flexible hose, achieving synchronous delivery of the agent to both sets of foaming valve blocks 10. The two sets of foaming valve blocks 10 (the core components of the dual foaming valve blocks 10) operate synchronously, thoroughly mixing and foaming the agent with the compressed air to generate high-density, high-stability dust-suppressing foam. Subsequently, the two sets of foaming valve blocks 10 respectively deliver foam to the corresponding spraying assemblies: the left foam nozzle seat 12 assembly is installed on the coal mining machine head, corresponding to the left-end cutting drum for precise spraying; the right foam nozzle seat 13 assembly is installed on the right-end telescopic arm of the housing 1, corresponding to the right-end cutting drum, and sprays after adjusting its position via the telescopic arm. Throughout the process, the spray angle can be flexibly adjusted via the hydraulic cylinder 8, and the spray position can be optimized with the help of the telescopic arm to ensure that the foam fully covers the dust-generating points and achieves efficient dust suppression.

[0032] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0033] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A coal mining machine-mounted foam dust suppression device containing a double-foaming valve block, characterized in that, include: The housing (1) is rotatably connected to the head of the coal mining machine via a connecting assembly; An angle adjustment mechanism is installed on the coal mining machine. One end of the angle adjustment mechanism is rotatably connected to the housing (1). The angle adjustment mechanism is used to adjust the angle of the housing (1). A foam generating mechanism, comprising a material box (2), two sets of foaming components and a material suction component, wherein the material suction component is installed inside the housing (1), the material box (2) is installed on the side wall of the housing (1), both sets of foaming components are installed inside the housing (1), the material suction component is connected to the material box (2), the foaming component is connected to the compressed air pipeline (3), and both sets of foaming components are connected to the material suction component; The foam spraying mechanism includes a left foam spraying component and a right foam spraying component. The left foam spraying component is arranged at the right end of the cutting drum of the coal mining machine. A telescopic arm is installed at the right end of the housing (1). The right foam spraying component is installed on the telescopic arm. The left foam spraying component and the right foam spraying component are respectively connected to two sets of foaming components.

2. The onboard foam dust suppression device for a coal mining machine containing a double-foaming valve block according to claim 1, characterized in that, The connecting assembly includes a support base (4), which is fixed to the head of the coal mining machine. A connecting seat (5) is rotatably connected to the support base (4) via a first pin assembly. The connecting seat (5) is fixedly connected to the housing (1) via a second pin assembly. A protective plate assembly (6) is installed on the outer wall of the housing (1).

3. The onboard foam dust suppression device for a coal mining machine containing a double-foaming valve block according to claim 1, characterized in that, The angle adjustment mechanism includes a support plate (7), which is fixed on the head of the coal mining machine. A hydraulic cylinder (8) is rotatably connected to the support plate (7). A connecting ear (9) is fixedly connected to the bottom of the housing (1). The output end of the hydraulic cylinder (8) is rotatably connected to the connecting ear (9) through a third pin assembly.

4. The onboard foam dust suppression device for a coal mining machine containing a double-foaming valve block according to claim 1, characterized in that, The foaming component includes a foaming valve block (10), which is arranged inside the housing (1). The air inlet of the foaming valve block (10) is connected to the compressed air pipeline (3), and the water inlet of the foaming valve block (10) is connected to the suction component through a water supply pipe.

5. The onboard foam dust suppression device for a coal mining machine containing a double-foaming valve block according to claim 4, characterized in that, The material suction assembly includes a material suction valve block (11), which is installed inside the housing (1) and is connected to the foaming valve block (10).

6. The onboard foam dust suppression device for a coal mining machine containing a double-foaming valve block according to claim 4, characterized in that, The left foam injection assembly includes a left foam nozzle seat (12), which is installed on the head of the coal mining machine and is arranged corresponding to the cutting drum at the left end of the coal mining machine head. The left foam nozzle seat (12) is connected to one of the foaming valve blocks (10).

7. The onboard foam dust suppression device for a coal mining machine containing a double-foaming valve block according to claim 4, characterized in that, The right foam injection assembly includes a right foam nozzle seat (13), which is mounted on the telescopic arm. The right foam nozzle seat (13) is connected to another set of foaming valve blocks (10) through a hose assembly. The right foam nozzle seat (13) is arranged corresponding to the cutting drum at the right end of the coal mining machine head.

8. A coal mining machine onboard foam dust suppression device with a double-foaming valve block according to claim 5, characterized in that, The output end of the suction valve block (11) is connected to a connecting pipe (14). One end of the connecting pipe (14) is connected to one of the foaming valve blocks (10). An elbow (15) is installed on the connecting pipe (14). The elbow (15) is connected to another set of foaming valve blocks (10) through a hose.

9. A coal mining machine onboard foam dust suppression device with double foaming valve blocks according to claim 4, characterized in that, A filter (16) assembly is installed on the water supply pipe.

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