A construction cycle dust removal equipment for a tunneling face

Abstract

The application provides a kind of tunneling face construction cycle dust removal equipment, including first pumping equipment, the first pumping equipment is communicated with suction assembly, the dust removal equipment further includes compressed air assembly, the suction assembly and compressed air assembly side are provided with telescopic control assembly, the suction assembly and compressed air assembly are communicated by circulation ventilation pipeline, the first pumping equipment is connected on circulation ventilation pipeline, the telescopic control assembly includes telescopic mounting bracket, the telescopic mounting bracket inner wall is installed with shear telescopic frame, the shear telescopic frame is installed with control gas rod, the circulation ventilation pipeline includes suction pipeline and compressed air pipeline, the suction pipeline end is communicated with suction assembly.The application can form wind circulation in tunneling construction face, and the ventilation end can be synchronized with tunneling face and move, meet the requirements of tunneling face operation construction dust removal.

Description

Technical Field

[0001] This invention relates to the field of dust removal equipment, and more particularly to a circulating dust removal equipment for tunnel face construction. Background Technology

[0002] During the excavation process at the mine face, a large amount of dust is generated. During equipment operation, dust needs to be treated to prevent dust overflow from affecting the working environment inside the tunnel. The most traditional dust removal method is to set up parallel atomizing nozzles, which spray water mist to mix with the overflowing dust to achieve dust settling. However, the traditional water mist settling method increases the local humidity at the tunneling site, which has a certain impact on the working environment and construction safety.

[0003] Some companies install separate ventilation systems in the tunnel during tunneling operations to exhaust air and dust from the tunnel face, thereby reducing dust content. However, these systems cannot move synchronously with the distance of the tunnel face during operation, requiring manual adjustment and reducing dust removal efficiency. Furthermore, the equipment does not create air circulation at the tunneling site, relying solely on negative pressure ventilation, resulting in low ventilation efficiency and poor dust control, failing to meet the dust removal requirements of tunneling operations. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a circulating dust removal device for tunnel face construction. This invention can create air circulation at the tunnel face, and the ventilation end can move synchronously with the tunnel face, thus meeting the dust removal requirements for tunnel face operations.

[0005] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0006] A circulating dust removal device for tunnel face construction includes a first air pump, which is connected to an exhaust assembly. The dust removal device also includes a compressed air assembly. Both the exhaust assembly and the compressed air assembly have telescopic control components on one side. The exhaust assembly and the compressed air assembly are connected via a circulating ventilation duct. The first air pump is connected in series to the circulating ventilation duct. The telescopic control component includes a telescopic mounting frame, with a scissor-type telescopic frame installed on the inner wall of the telescopic mounting frame. A control air rod is installed inside the scissor-type telescopic frame. The circulating ventilation duct includes an exhaust duct and a compressed air duct. The end of the exhaust duct is connected to the exhaust assembly. There are two compressed air ducts. Each end is connected to a corresponding control air rod, which is connected to a blowing pipe. A control valve group is connected in series in the blowing pipe. A compressed air assembly is set behind the exhaust assembly. The airflow is controlled by the first pumping equipment to form a wind circulation. The dust generated during the tunneling face construction can be purified in a highly efficient circulation process. The entire dust removal equipment is independent of the ventilation system, which is convenient for installation and subsequent maintenance. Furthermore, by setting the control valve group, the air flow rate of the blowing pipe can be controlled, thereby adjusting the extension amplitude and speed of the control air rod and the scissor telescopic frame. This allows the exhaust assembly and the compressed air assembly to move with the tunneling face, ensuring efficient dust removal and purification.

[0007] Preferably, the dust removal equipment further includes a second air pumping device, which consists of two devices, respectively installed at both ends of the circulating ventilation duct. By setting up the second air pumping device, the ventilation rate at both ends can be enhanced. When the amount of dust is large, the ventilation efficiency can be increased to promptly discharge the dust for purification and ensure the purification effect.

[0008] Preferably, the dust removal equipment further includes a purification component connected in series with the circulating ventilation duct. The purification component includes a purification installation box, which includes a first purification chamber and a second purification chamber. The first and second purification chambers are connected. An electrostatic purification device and a water mist purification device are installed in the first purification chamber. By allowing dust to pass through the first and second purification chambers in sequence, the dust can be adsorbed and settled during the two purification processes, reducing the dust content in the exhaust gas and achieving a highly efficient purification process. Compared with traditional water mist dust suppression, it is installed in a separate chamber and uses less water, which will not significantly increase the humidity at the tunnel face construction site, ensuring the safety, stability, and cleanliness of the work site.

[0009] Preferably, the water mist purification device includes an atomizing nozzle installed in the second purification chamber. The atomizing nozzle is connected to a pumping pipe. An inclined windward baffle is provided in the second purification chamber. A vibration device is installed at the lower end of the windward baffle. The vibration device is connected to the windward baffle and the electrostatic purification device by means of a vibration transmission workpiece. By setting the windward baffle, the dust can be better settled by the atomizing device. By setting the vibration device and the vibration transmission workpiece, the electrostatic purification device and the water mist purification device can be better cleaned, thereby enhancing the dust purification effect.

[0010] Preferably, the upper end of the first telescopic control component is equipped with an air blowing plate that is slidably connected thereto. The upper end of the air blowing plate is provided with an air blowing gap. The end of the first air blowing pipe is connected to the air blowing gap. The air blowing gap can blow out an air wall. The air wall is located behind the exhaust component and can form a barrier to prevent dust from overflowing, thereby enhancing the efficiency of the exhaust component in absorbing dust.

[0011] Preferably, the side wall of the air compressor assembly has a plug-in mounting port, and the end of the second air blowing pipe is connected to the plug-in mounting port.

[0012] Preferably, the control valve assembly includes a control mounting cylinder with a control chamber on its side wall. Several control openings connect the control chamber to the control mounting cylinder. A control piston is slidably connected inside the control mounting cylinder. A telescopic device is installed at the upper end of the control mounting cylinder. The telescopic end of the telescopic device is fixedly connected to the control piston via a connecting workpiece. The telescopic device allows for convenient control of the control piston, thereby conveniently controlling the airflow. Adjustment is achieved by controlling the position of the connecting workpiece, making it intuitive, simple, and easy to operate.

[0013] The beneficial effects of this invention are as follows:

[0014] 1. During construction, the first air pumping device draws in air through the exhaust assembly and blows it out through the compressed air assembly, achieving air circulation. The entire purification equipment operates independently, ensuring efficient and continuous dust removal and purification operations. By setting up components such as control air rods and scissor-type telescopic frames, the amount of gas in the control air rods can be increased during the gas circulation process. The extension length and extension rate can be controlled by the control valve group, allowing the exhaust assembly and compressed air assembly to move synchronously with the tunneling face construction, meeting the construction requirements. The dust removal operation and the extension action of the control air rods are controlled in series through circulating ventilation ducts, simplifying the control process, making operation simple, and reducing the failure rate.

[0015] 2. The gas blown from the air compressor at the end of the blower duct can exert pressure on the gas in front, promoting air circulation. Furthermore, the gas blown from the blower duct through the air blower plate can form an air wall. The air wall is constantly located behind the exhaust component, which can block dust and prevent dust from overflowing and affecting the rear. It can also make the dust gather around the exhaust component, allowing it to better absorb the dust and enhance the dust emission and purification effect.

[0016] 3. By setting up control air rods and controlling the position of the exhaust and compression components, the extension range is large, which can meet the construction needs; and the overall size is small, occupying little space, and will not affect the tunneling construction. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 For the present invention Figure 1 Front view structural diagram;

[0019] Figure 3 For the present invention Figure 2 A magnified structural diagram at point A;

[0020] Figure 4 For the present invention Figure 2 A magnified structural diagram at point B;

[0021] Figure 5 For the present invention Figure 2 A magnified structural diagram at point C.

[0022] In the diagram: 1. Excavation face; 2. Exhaust assembly; 3. Compressed air assembly; 4. Telescopic control assembly; 401. Telescopic mounting frame; 402. Scissor telescopic frame; 403. Control air rod; 404. Control slider; 405. Air blowing plate; 5. Purification assembly; 501. Electrostatic purification device; 5011. Plate mounting frame; 5012. Electrostatic plate; 502. Water mist purification device; 5021. Pumping pipe; 5022. Atomizing nozzle; 5023. Windproof baffle; 503. Vibration device; 6. First pumping equipment; 7. Second pumping equipment; 8. Control valve group; 8011. Control mounting cylinder; 8012. Control piston; 8013. Control chamber; 802. Telescopic device; 901. Exhaust pipe; 902. Compressed air pipe; 903. Air blowing pipe. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Reference Figure 1-5A circulating dust removal device for tunnel face construction includes a first air pumping device 6, which is connected to an exhaust component 2. The dust removal device also includes a compressed air component 3. By setting the exhaust component 2 and the compressed air component 3, the first air pumping device 6 can draw in gas from the exhaust component 2 and blow the drawn-in gas out from the compressed air component 3 to achieve a local circulation process. The gas mixed with dust can be purified in this circulation process, reducing the dust content in the gas. This method can operate independently of the air supply system, has a short working path, high dust removal efficiency, and simple and convenient maintenance.

[0025] Telescopic control components 4 are provided on one side of both the exhaust assembly 2 and the air compressor assembly 3. The exhaust assembly 2 and the air compressor assembly 3 are connected by a circulating ventilation duct. The first air pump 6 is connected in series to the circulating ventilation duct. The telescopic control component 4 includes a telescopic mounting frame 401. A scissor-type telescopic frame 402 is installed on the inner wall of the telescopic mounting frame 401. A control air rod 403 is installed inside the scissor-type telescopic frame 402. The telescopic mounting frame 401 includes two first mounting plates, upper and lower, which are connected by a second mounting plate. The scissor-type telescopic frame 402 includes several first telescopic frames and second telescopic frames. The lower end is slidably connected to a control slider 404, which is rotatably connected to the corresponding first telescopic frame and second telescopic frame. The exhaust component 2 and the air compressor component 3 are respectively installed at the end of the first telescopic frame at the first end, and the angle can be adjusted. The first telescopic frame at the second end is rotatably connected to the telescopic mounting frame 401, and the second telescopic frame is slidably connected to the telescopic mounting frame 401. During the process of the control air rod 403 unfolding, the exhaust component 2 or the air compressor component 3 at the end can be controlled to move closer to the end of the tunnel face, so that the distance between the two and the tunnel face construction is kept consistent, and the ventilation effect is stable.

[0026] The circulating ventilation duct includes an exhaust duct 901 and a compressed air duct 902. The exhaust duct 901 is connected to the exhaust assembly 2 at its end. There are two compressed air ducts 902, each connected to a corresponding control air rod 403 at its end. The control air rod 403 is connected to a blowing duct 903, and a control valve assembly 8 is connected in series inside the blowing duct 903. The control valve assembly 8 controls the rate of air blown out of the blowing duct 903. When the control air rod 403 needs to be adjusted to open, the rate of air flowing out of the control valve assembly 8 is less than the rate of air flowing into the control air rod 403. The control rod 403 unfolds to control the unfolding of the scissor-type telescopic frame 402; conversely, by adjusting the outflow rate of the control valve group 8 to be greater than the outflow rate of the control rod 403, the retraction of the control rod 403 can be adjusted, controlling both to return to their original positions. It should be noted that the control rod 403 is equipped with a sealing piston inside to ensure the airtightness of the chamber. The control rod 403 should be selected as a large-diameter elastic telescopic rod to avoid the control rod 403 from operating under small airflow conditions, thereby enhancing the controllability of the equipment and facilitating the control of the position of the exhaust assembly 2 or the air compressor assembly 3.

[0027] The dust removal equipment also includes a second air pumping device 7. There are two second air pumping devices 7, which are installed at both ends of the circulating ventilation duct. By setting up the second air pumping device 7, the effect of gas flow in the circulating ventilation duct can be enhanced, overcoming the defects caused by excessively long ducts, so as to ensure that the gas can circulate efficiently. When the amount of dust in the tunneling face is large, the second air pumping device 7 can be started to assist in improving the dust treatment effect. The first air pumping device 6 and the second air pumping device 7 can be selected from common ventilation pumps to control the unidirectional flow of gas.

[0028] The dust removal equipment also includes a purification component 5, which is connected in series to the circulating ventilation duct. By setting the purification component 5, the dust in the circulating ventilation duct can be settled to purify the gas at the tunneling face. The purification component 5 includes a purification installation box, which includes a first purification chamber and a second purification chamber, which are connected to each other. An electrostatic purification device 501 and a water mist purification device 502 are installed in the first purification chamber. The electrostatic purification device 501 uses electrostatic dust removal technology. An electrostatic plate 5012 is installed in the plate mounting frame 5011. The electrostatic plate 5012 consists of alternating cathode and anode plates. When dust passes between the two plates, it becomes charged and moves in a direction, thus completing the adsorption and purification of the dust.

[0029] The water mist purification device 502 includes an atomizing nozzle 5022 installed in the second purification chamber. The atomizing nozzle 5022 is connected to a pumping pipe 5021. The liquid pumped by the pumping pipe 5021 is atomized by the atomizing nozzle 5022 and sprayed out, mixing with the dust in the chamber to complete the settling of the remaining dust. An inclined wind-facing baffle 5023 is installed in the second purification chamber, positioned opposite the air inlet. Upon entering, the gas first contacts the wind-facing baffle 5023 and finally exits from the top gap. The atomizing nozzle 5022 is positioned corresponding to the gap. This improves the dust treatment effect. Furthermore, the gas after the first electrostatic treatment has a lower dust content, and the secondary mist... After chemical treatment, there is no need to pump in large amounts of liquid, which reduces the humidity in the gas and ensures the safe and stable progress of tunneling construction. In order to further improve the dust treatment effect and increase the efficiency of the equipment in handling dust, a vibration device 503 is installed at the lower end of the windward baffle 5023. The vibration device 503 is connected to the windward baffle 5023 and the electrostatic purification device 501 through the vibration transmission workpiece. Through the vibration device 503 and the transmission workpiece, the impurities on the surface of the windward baffle 5023 can be directionally flowed to complete the discharge of impurities. After working in the electrostatic purification device 501 for a period of time, the power is cut off, and the impurities adsorbed on the surface of the electrostatic plate 5012 can fall off under the action of the vibration device 503, completing the cleaning and collection process.

[0030] An air-blowing plate 405 is slidably connected to the upper end of the first telescopic control component 4. An air-blowing gap is provided at the upper end of the air-blowing plate 405. The end of the first air-blowing pipe 903 is connected to the air-blowing gap. The gas blown from the end of the first air-blowing pipe 903 can flow out evenly under the action of the air-blowing gap, forming an air wall that can prevent local dust overflow and allow dust to accumulate at the exhaust component 2 for collection. Furthermore, the air-blowing plate 405 is connected to one of the control sliders 404 and can move synchronously with the extension of the scissor-type telescopic frame 402 to maintain the movement... The synchronous movement creates an air wall at a predetermined position behind the exhaust assembly 2, ensuring the dust circulation and purification effect. Furthermore, a dust detection element can be installed on the side of the air blowing plate 405 away from the exhaust assembly 2 to detect the dust content behind the air wall. When the dust content exceeds the threshold, the gas outflow rate of the control valve group 8 is adjusted, thereby enhancing the air wall effect, restricting dust outflow, and controlling the extension rate of the air rod 403 to slow down or retract, preventing a large amount of dust from flowing out of the air wall, thus improving the dust absorption effect between the air wall and the tunnel face.

[0031] The compressor assembly 3 has a plug-in mounting port on its side wall. The end of the second air blowing pipe 903 is connected to the plug-in mounting port. The second air blowing pipe 903 is for compressed air. The circulated gas can be blown out from the second air blowing pipe 903 to realize gas circulation, improve circulation efficiency, and improve gas purification efficiency.

[0032] The control valve assembly 8 includes a control mounting cylinder 8011, with a control chamber 8013 on its side wall. Several control openings connect the control chamber 8013 and the control mounting cylinder 8011. A control piston 8012 is slidably connected inside the control mounting cylinder 8011. The control openings have a small diameter. By adjusting the control piston 8012 to different positions, the number of control openings connected to the control mounting cylinder 8011 can be adjusted, thereby controlling the flow rate of the gas at the end and ultimately controlling the extension length of the control rod 403. A telescopic device 802 is installed at the upper end of the control mounting cylinder 8011. The telescopic end of the telescopic device 802 is fixedly connected to the control piston 8012 via a connecting workpiece. The telescopic device 802 can be a common type of electric telescopic rod, pneumatic rod, etc. By fixing it to the control piston 8012 via the connecting workpiece, the position of the control piston 8012 can be controlled.

[0033] During the operation of this invention, the construction equipment at the tunnel face installs the exhaust assembly 2 at the ground end and the compressed air assembly 3 at the top of the inner wall of the tunnel face. The distance between the exhaust assembly 2 and the tunnel face 1 is smaller than the distance between the compressed air assembly 3 and the tunnel face 1. During the dust removal process, the first air pump 6 is activated, and the gas circulates. The gas containing dust enters from the exhaust assembly 2, passes through the first air pump 6, enters the purification assembly 5 for purification, and is finally discharged from the compressed air assembly 3, thus realizing gas circulation. During the circulation process, the gas completes the purification process of the dust in the gas.

[0034] The gas flows sequentially through the electrostatic purification device 501 and the water mist purification device 502 within the purification component 5. The electrostatic purification device 501 performs electrostatic adsorption of dust, achieving primary purification. The water mist in the water mist purification device 502 accelerates the settling of dust, achieving secondary purification. After the two purifications, the dust is significantly reduced and eventually flows out after circulation, accelerating the local gas circulation process at the tunneling face.

[0035] Furthermore, during the gas outflow process, the position of the control piston 8012 within the control valve group 8 is adjusted to control the rate of gas outflow from the control rod 403. During the pumping phase, the amount of gas pumped into the control rod 403 is greater than the amount of gas pumped out of the control rod 403. During this process, the control rod 403 gradually extends, allowing it to cooperate with the scissor telescopic frame 402 to open, thereby controlling the synchronous movement of the end exhaust assembly 2 and the air compression assembly 3 to ensure a constant distance between them and the tunneling face, maintaining the effect of air circulation dust removal.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A kind of face construction cycle dust removal equipment, including first pumping equipment (6), the first pumping equipment (6) is communicated with suction assembly (2), it is characterized in that: The dust removal equipment further includes pressure air assembly (3), and the suction assembly (2) and pressure air assembly (3) one side are provided with telescopic control assembly (4), the suction assembly (2) and pressure air assembly (3) are communicated by circulation ventilation pipeline, the first pumping equipment (6) is connected on circulation ventilation pipeline, the telescopic control assembly (4) includes telescopic mounting bracket (401), shear telescopic frame (402) is installed in the inner wall of telescopic mounting bracket (401), control gas rod (403) is installed in shear telescopic frame (402), the circulation ventilation pipeline includes suction duct (901) and pressure air duct (902), the suction duct (901) end is communicated with suction assembly (2), the pressure air duct (902) is two, and the two pressure air duct (902) end is respectively communicated with corresponding control gas rod (403), control gas rod (403) is communicated with blowing duct (903), and control valve group (8) is connected in blowing duct (903); The control valve group (8) includes control mounting cylinder (8011), control cavity (8013) is opened in the side wall of control mounting cylinder (8011), a plurality of control openings are communicated between control cavity (8013) and control mounting cylinder (8011), control piston (8012) is sealingly and slidably connected in control mounting cylinder (8011), telescopic device (802) is installed on the upper end of control mounting cylinder (8011), and the telescopic end of telescopic device (802) is fixedly connected with control piston (8012) by connecting workpiece. The position of control piston in control valve group is adjusted, the rate of gas flowing out of control gas rod is controlled, the amount of gas pumped into control gas rod is greater than the amount of gas pumped out of control gas rod in the pumping stage, in the process, control gas rod gradually elongates, control shear telescopic frame opens, and suction assembly and pressure air assembly at the end are synchronously moved.

2. A face construction cycle dust extraction apparatus according to claim 1, characterised in that, The dust removal equipment further includes second pumping equipment (7), the second pumping equipment (7) is two, and is respectively installed in the two ends of circulation ventilation pipeline.

3. The face construction cycle dust extraction apparatus of claim 1, wherein, The dust removal equipment further includes purification assembly (5), and the purification assembly (5) is connected in circulation ventilation pipeline, the purification assembly (5) includes purification installation box, the purification installation box includes first purification chamber and second purification chamber, the first purification chamber and the second purification chamber are communicated, electrostatic purification device (501) is arranged in the first purification chamber, and water mist purification device (502) is arranged in the first purification chamber.

4. A face construction cycle dust extraction apparatus according to claim 3, characterised in that, The water mist purification device (502) comprises an atomizing nozzle (5022) installed in a second purification chamber, the atomizing nozzle (5022) is communicated with a pump gas pipeline (5021), an inclined windward baffle (5023) is arranged in the second purification chamber, a vibration device (503) is installed at the lower end of the windward baffle (5023), the vibration device (503) is connected with the windward baffle (5023) and the electrostatic purification device (501) according to vibration conduction.

5. The face construction cycle dust extraction apparatus of claim 1, wherein, The upper end of the first telescopic control assembly (4) is provided with a blowing plate (405) in sliding connection with the first telescopic control assembly (4), the blowing plate (405) is provided with a blowing gap at the upper end, and the tail end of the first blowing pipeline (903) is communicated with the blowing gap.

6. The face construction cycle dust extraction apparatus of claim 1, wherein, The air pressure assembly (3) is provided with a plug-in installation port in the side wall, and the tail end of the second blowing pipeline (903) is communicated with the plug-in installation port.

Images