Tunnel complex dust removal equipment

Abstract

The application discloses a tunnel composite dust removal equipment, which comprises a mounting frame, an exhaust channel and an exhaust mechanism. The exhaust channel extends along a first horizontal direction, is arranged on the top of the mounting frame and is provided with the exhaust mechanism. At least two air curtain devices, including a first air curtain device and a second air curtain device, are arranged on the mounting frame at intervals. The first air curtain device and the second air curtain device are both arranged below the exhaust channel and close to the exhaust channel. In the first horizontal direction, the second air curtain device is located at the upstream end of the first air curtain device. The air curtain device comprises an air outlet cylinder and an air outlet mechanism. The air outlet mechanism is arranged in the air outlet cylinder. The air outlet of the air outlet cylinder is arranged on the side of the air outlet cylinder away from the exhaust channel. The length of the air outlet extends along a second horizontal direction. The first horizontal direction intersects with the second horizontal direction. The dust removal equipment is safe and efficient, and has good dust removal effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tunnel construction equipment, and particularly relates to a tunnel composite dust removal equipment. BACKGROUND

[0002] When building expressways and railways, tunnels are often excavated, and the tunnel excavation is often carried out by the drill and blast method. After the blasting of the working face, the rock debris, high-temperature gas, and even toxic and harmful gas are released together. The rock debris and contaminated gas generated by the drill and blast method quickly occupy the tunnel section and spread outward. For long tunnels, the pollution is not easy to control, and the pollution range is large. The low visibility of the tunnel seriously affects the construction environment of the secondary lining, inverted arch and other processes in the tunnel.

[0003] At present, the main measure to control the pollution near the working face is to ventilate a large amount of air to reduce the concentration of the blast dust and increase the visibility, and at the same time, to reduce the temperature and dissipate the heat. However, the control of the pollution near the working face often requires a long time of a large amount of ventilation, which consumes time and energy, thereby increasing the time difference between the front and rear processes and causing great waste of resources. Moreover, the ventilators after the blasting of the tunnel working face are generally arranged outside the tunnel, and a large amount of fresh air is sent into the tunnel. For long tunnels, the ventilation energy consumption is large, and the diffusion of the pollutants cannot be effectively controlled.

[0004] Another solution is to make the dust quickly settle by spraying water mist in the tunnel, but this method releases the water mist into the entire tunnel space, which easily increases the humidity of the working environment in the tunnel, greatly reduces the life of the mechanical equipment in the dirty and wet environment, and easily causes the leakage and short circuit accidents. SUMMARY

[0005] In order to solve the problems existing in the prior art, the purpose of the present application is to provide a tunnel composite dust removal equipment which is safe and efficient and has good dust removal effect.

[0006] In order to achieve the above-mentioned purpose, the tunnel composite dust removal equipment provided by the present application comprises a mounting frame, an exhaust channel and an exhaust mechanism, the exhaust channel extends along a first horizontal direction, the exhaust channel is arranged at the top of the mounting frame, and the exhaust mechanism is arranged in the exhaust channel; at least two air curtain devices are also arranged on the mounting frame in a spaced manner, including a first air curtain device and a second air curtain device, the first air curtain device and the second air curtain device are both located below the exhaust channel and arranged close to the exhaust channel; in the first horizontal direction, the second air curtain device is located at the upstream end of the first air curtain device; the air curtain device comprises an air outlet cylinder and an air outlet mechanism, the air outlet mechanism is arranged in the air outlet cylinder, the air outlet of the air outlet cylinder is arranged on the side of the air outlet cylinder away from the exhaust channel, the length of the air outlet extends along a second horizontal direction, and the first horizontal direction intersects the second horizontal direction.

[0007] The two first air curtain devices and the two second air curtain devices are arranged at intervals, and the air outlets of the air outlet tubes of the first air curtain devices and the second air curtain devices are all downward, the upward air flow generated by the second air curtain devices becomes the air source of the first air curtain devices, and the upward air flow generated by the first air curtain devices becomes the air source of the exhaust mechanism. The air pressure in the tunnel is relatively low, and the fresh air outside enters the tunnel rapidly through the first air curtain devices and the second air curtain devices. The upward air flow generated by the first air curtain and the second air curtain can fully disturb the smoke and dust at the end of the tunnel, so that the toxic smoke and dust and a large amount of particulate pollutants deposited below the end of the tunnel can be discharged from the exhaust duct at the top, greatly improving the efficiency and effect of dust removal. At the same time, at least two air curtain devices, the first air curtain device blocks most of the smoke and mist, and the second air curtain device basically isolates harmful smoke and mist, effectively preventing the diffusion of smoke.

[0008] Further, the air outlet tube is connected with the lower surface of the exhaust passage, and the air outlet direction of the air outlet is perpendicular to the horizontal plane.

[0009] As can be seen from the above, the air outlet tube is connected with the lower surface of the exhaust passage, which can effectively expand the space of the driving channel surrounded by the mounting frame.

[0010] Further, the cross-sectional area of the air inlet end of the air outlet tube gradually increases from the air inlet end of the air outlet tube towards the air outlet end of the air outlet tube.

[0011] As can be seen from the above, the cross-sectional area of the air inlet end of the air outlet tube gradually increases, which can reduce air resistance and facilitate smooth circulation of gas.

[0012] Further, the tunnel composite dust removal device further comprises a filter, the filter is arranged in the exhaust passage, the filter is arranged close to the air inlet end of the exhaust passage relative to the exhaust mechanism, and the filter comprises activated carbon and a filter screen.

[0013] As can be seen from the above, the filter is arranged to enable the smoke to be quickly settled and collected, preventing harmful smoke and mist from spreading in the tunnel.

[0014] Further, the tunnel composite dust removal device further comprises a settling mechanism, the settling mechanism is arranged outside the exhaust passage and close to the air inlet end of the exhaust passage, and the settling mechanism comprises an atomizing jet water gun, which sprays into the air inlet of the exhaust passage.

[0015] As can be seen from the above, the atomizing jet water gun can quickly settle the smoke entering the exhaust passage and reduce pollution.

[0016] Further, the tunnel compound dust removal device further comprises a wind pressure detection device and a control device electrically connected to each other, the wind pressure detection device transmits a detected wind pressure signal to the control device, and the exhaust mechanism and the air outlet mechanism are electrically connected to the control device, and the control device controls the power of the exhaust mechanism and the air outlet mechanism.

[0017] Further, the wind pressure detection device comprises at least one wind pressure measuring plate assembly, each wind pressure measuring plate assembly comprises a rotating shaft, a connecting rod, an angle measuring sensor and a wind pressure measuring plate, the rotating shaft is rotatably arranged on a mounting frame, the two ends of the connecting rod are connected to the rotating shaft and the wind pressure measuring plate respectively, the wind pressure measuring plate is arranged directly below an air outlet of the first air curtain device, and the angle measuring sensor is arranged on the mounting frame to detect the deflection angle of the rotating shaft; the number of the wind pressure measuring plate assemblies is two, the wind pressure measuring plate of one wind pressure measuring plate assembly is arranged directly below the air outlet of the first air curtain device, and the wind pressure measuring plate of the other wind pressure measuring plate assembly is arranged directly below the air outlet of the second air curtain device.

[0018] As can be seen from the above, by arranging the first wind pressure measuring plate and the angle measuring sensor thereon, the angle of deflection of the first rotating shaft is measured according to the angle measuring sensor, so that the control device compares the angle measured by the angle measuring sensor with a preset value, thereby adjusting the power of the exhaust mechanism, effectively balancing the air pressure on both sides of the first air curtain, and enabling the smoke dust to be effectively discharged. The first wind pressure measuring plate and the second wind pressure measuring plate are arranged at the same time, and the air pressure on the inside and outside of the first air curtain device and the second air curtain device is detected respectively, and the control device controls the power of the air outlet mechanism of the first air curtain device and the power of the air outlet mechanism of the second air curtain device according to the detected data, so as to maintain a predetermined pressure difference between the inside and outside of the first air curtain device and the inside and outside of the second air curtain device, thereby preventing the smoke mist from escaping.

[0019] Further, the tunnel compound dust removal device further comprises a camera and a smoke sensor, and the camera and the smoke sensor are electrically connected to the control device.

[0020] As can be seen from the above, by arranging the camera and the smoke sensor, the camera collects an image signal, the smoke sensor collects a smoke concentration signal, the control device compares the collected image signal and the smoke concentration signal collected by the smoke sensor with a predetermined threshold value, and when the value exceeds the predetermined threshold value for a continuous period of time, the power of the exhaust mechanism and the air outlet mechanism is adjusted at the same time, thereby improving the overall dust removal efficiency of the device.

[0021] Further, the tunnel composite dust removal equipment is provided with at least one blocking piece on the outside, one blocking piece is located in the same vertical plane with the air outlet of one air curtain device, and the blocking piece blocks the space between the tunnel composite dust removal equipment and the outside wall of the tunnel; or the number of the blocking pieces is two, one blocking piece is provided in one-to-one correspondence with one air curtain device, and the blocking piece is located in the same vertical plane with the air outlet of the air curtain device.

[0022] From the above, the blocking piece is blocked, which effectively prevents the toxic smoke dust from escaping.

[0023] Further, the mounting frame encloses the trolley passage, and the trolley passage is located below the air curtain device.

[0024] From the above, the mounting frame encloses the trolley passage, which effectively saves space and does not hinder the entry and exit of construction equipment.

[0025] From the above, the tunnel composite dust removal equipment of the present application is not only safe and reliable, but also has a smaller floor space, does not affect the entry and exit of other equipment, has a better dust removal effect, and effectively protects the health of construction personnel in the tunnel. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structure diagram of the first perspective of the tunnel composite dust removal equipment embodiment of the present application.

[0027] Figure 2 It is an enlarged view of the position A in the figure. Figure 1

[0028] Figure 3 It is a structure diagram of the second perspective of the tunnel composite dust removal equipment embodiment of the present application.

[0029] Figure 4 It is an enlarged view of the position B in the figure. Figure 3

[0030] Figure 5 It is a sectional view of the tunnel composite dust removal equipment embodiment of the present application.

[0031] Figure 6 It is a rear view of the tunnel composite dust removal equipment embodiment of the present application. DETAILED DESCRIPTION

[0032] Reference Figures 1 to 5 ​​The tunnel composite dust removal equipment 1 provided by the embodiment comprises a mounting frame 3, an exhaust passage 4, a filter 8, a settling mechanism 9, an exhaust mechanism 5, a first air curtain device 6 and a second air curtain device 7. The exhaust passage 4 is arranged at the top of the mounting frame 3, the length of the exhaust passage 4 extends along a first horizontal direction, and the exhaust mechanism 5 is arranged in the exhaust passage 4. The exhaust mechanism 5 is two exhaust fans 50 arranged at intervals. The first air curtain device 6 and the second air curtain device 7 are arranged on the mounting frame 3, the mounting frame 3 encloses a vehicle passage 30, the vehicle passage 30 is located below the first air curtain device 6 and the second air curtain device 7, and the lower end of the mounting frame 3 is provided with a plurality of rollers 15 to facilitate the movement of the equipment. The first air curtain device 6 and the second air curtain device 7 are arranged in sequence in the first horizontal direction, and the first air curtain device 6 and the second air curtain device 7 are separated by a predetermined distance to generate sufficient air flow circulation. In the first horizontal direction, the second air curtain device 7 is located at the upstream end of the first air curtain device 6, and the first air curtain device 6 and the second air curtain device 7 are both located below the exhaust passage 4 and connected with the lower surface of the exhaust passage 4. The first air curtain device 6 comprises a first air outlet cylinder 60 and a first air outlet mechanism 61, the first air outlet mechanism 61 is arranged in the air inlet end of the first air outlet cylinder 60, the first air outlet mechanism 61 is a gas compression fan, and the first air outlet 62 of the first air outlet cylinder 60 is arranged on the side of the first air outlet cylinder 60 away from the exhaust passage 4 and faces the bottom wall of the tunnel, the length of the first air outlet 62 extends along a second horizontal direction, and the air outlet direction of the first air outlet 62 is perpendicular to the horizontal plane. The structure of the second air curtain device 7 is consistent with that of the first air curtain device 6, and the second air curtain device 7 comprises a second air outlet cylinder 70, a second air outlet mechanism 71 and a second air outlet 72. The first horizontal direction and the second horizontal direction are perpendicular to each other. The first horizontal direction is the length direction of the tunnel, and the second horizontal direction is the width direction of the tunnel. Optionally, the number of air curtain devices can be more than two.

[0033] In the embodiment, in the horizontal air inlet direction of the first air outlet cylinder 60, the cross-sectional area of the air inlet end of the first air outlet cylinder 60 gradually increases from the air inlet end to the air outlet end.

[0034] In the embodiment, the filter 8 is arranged in the exhaust passage 4, the filter 8 is arranged close to the air inlet end of the exhaust passage 4 relative to the exhaust mechanism 5, and the filter 8 comprises existing filters such as activated carbon and filter screens. The settling mechanism 9 is arranged outside the exhaust passage 4 and close to the air inlet end of the exhaust passage 4, and the settling mechanism 9 comprises an atomized jet water gun which sprays towards the air inlet of the exhaust passage 4.

[0035] In this embodiment, the tunnel composite dust removal equipment 1 further comprises a wind pressure detection device 10, a control device 13, a camera (not shown in the figure), a smoke sensor (not shown in the figure). The camera (not shown in the figure), the smoke sensor (not shown in the figure), the wind pressure detection device 10, the rotating shaft, the air outlet mechanism and the exhaust mechanism 5 are all electrically connected with the control device 13. The wind pressure detection device 10 comprises a first wind pressure measuring plate 113 assembly and a second wind pressure measuring plate 123 assembly, the first wind pressure measuring plate assembly detects the wind pressure on the inside and outside of the first air curtain device 6, and the second wind pressure measuring plate 123 assembly detects the wind pressure on the inside and outside of the second air curtain device 7. The first wind pressure measuring plate 113 assembly comprises a first rotating shaft 110, a first connecting rod 111, a first angle measuring sensor 112 and a first wind pressure measuring plate 113, the first rotating shaft 110 is rotatably arranged on the mounting frame 3 and penetrates the first air outlet 62, the two ends of the first connecting rod 111 are respectively connected with the first rotating shaft 110 and the first wind pressure measuring plate 113, and the first wind pressure measuring plate 113 is located directly below the first air outlet 62. The second wind pressure measuring plate 123 assembly comprises a second rotating shaft 120, a second connecting rod 121, a second angle measuring sensor 122 and a second wind pressure measuring plate 123, the second rotating shaft 120 is rotatably arranged on the mounting frame 3 and penetrates the second air outlet 72, the two ends of the second connecting rod 121 are respectively connected with the second rotating shaft 120 and the second wind pressure measuring plate 123, and the second wind pressure measuring plate 123 is located directly below the second air outlet 72. The first angle measuring sensor 112 and the second angle measuring sensor 122 are both arranged on the mounting frame 3, the first angle measuring sensor 112 is used for detecting the deflection amplitude and direction of the first rotating shaft 110, and the second angle measuring sensor 122 is used for detecting the deflection amplitude and direction of the second rotating shaft 120. When the air curtain device and the air curtain device are started, the rotating shaft drives the wind pressure measuring plate to deflect, and the angle sensor transmits the angle signal of the deflection of the wind pressure measuring plate to the control device 13. When the first wind pressure measuring plate 113 deflects to the inside of the tunnel and the deflection angle is greater than a predetermined value, the control module can down-regulate the power of the exhaust mechanism 5 according to the negative angle signal fed back by the first angle measuring sensor 112; when the wind pressure measuring plate deflects to the outside of the tunnel and the deflection angle is greater than a predetermined value, the control device 13 up-regulates the power of the exhaust mechanism 5 according to the positive angle signal fed back by the first angle measuring sensor 112, effectively balances the air pressure on both sides of the first air curtain device 6, and makes the smoke dust more efficient. Optionally, the control device 13 controls the power of the air outlet mechanism of the two air curtain devices respectively, so that the inside and outside of the air curtain device maintains a predetermined wind pressure difference, preventing smoke and mist from escaping.

[0036] Optionally, the wind pressure detection device 10 only comprises one wind pressure measuring plate assembly, the wind pressure measuring plate assembly is arranged corresponding to the first air curtain device 6, and the wind pressure measuring plate of the wind pressure measuring assembly is located directly below the first air outlet 62.

[0037] A camera (not shown in the figure) and a smoke sensor (not shown in the figure) are used to detect the degree of air pollution when working in the tunnel, the camera (not shown in the figure) collects image signals and transmits the signals to the control device 13, the smoke sensor (not shown in the figure) collects smoke concentration signals and transmits the signals to the control device 13, the control device 13 compares the image signals of the camera (not shown in the figure) and the smoke concentration signals of the smoke sensor (not shown in the figure) with the predetermined threshold value, and when the predetermined threshold value is exceeded for 2 seconds, the power of the exhaust fan and the air pressure fan is increased, thereby improving the overall dust and mist removal efficiency.

[0038] Referring to Figure 6 In the embodiment, the tunnel composite dust removal equipment 1 further comprises a blocking piece 14, the blocking piece 14 is arranged outside the tunnel composite dust removal equipment 1, the blocking piece 14 comprises an air pump (not shown in the figure) and a high-pressure air pipe 140 connected with the air pump, the high-pressure air pipe 140 is located in the same vertical plane as the first air outlet 62, a plurality of nozzles 141 are arranged on one side of the high-pressure air pipe facing the side wall of the tunnel 2, the air pump supplies air to the high-pressure air pipe 140, and the nozzles 141 form an air curtain by spraying air, thereby preventing smoke and dust from escaping from the inner end of the tunnel 2. Optionally, the number of blocking pieces 14 includes two or more, and the number of blocking pieces 14 corresponds to the number of air curtain devices, and the air outlet of the blocking piece 14 and the air curtain device are located in the same vertical plane. The high-pressure air pipe is used for blocking, and it does not need to be stored, and it is more convenient to use.

[0039] Optionally, the blocking piece 14 comprises a rubber plate arranged between the outer side of the tunnel composite dust removal equipment 1 and the outer wall of the tunnel 2, thereby sealing the space between the tunnel composite dust removal equipment 1 and the outer wall of the tunnel, thereby preventing smoke and dust from escaping.

[0040] Finally, it should be emphasized that the above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1.A tunnel compound dust removal device, comprising a mounting frame, an exhaust passage and an exhaust mechanism, the exhaust passage extends along a first horizontal direction, the exhaust passage is arranged on the top of the mounting frame, and the exhaust mechanism is arranged in the exhaust passage; characterized in that: at least two air curtain devices are arranged on the mounting frame, comprising a first air curtain device and a second air curtain device, the first air curtain device and the second air curtain device are arranged below and close to the exhaust passage; in the first horizontal direction, the second air curtain device is located at the upstream end of the first air curtain device; the air curtain device comprises an air outlet cylinder and an air outlet mechanism, the air outlet mechanism is arranged in the air outlet cylinder, the air outlet of the air outlet cylinder is arranged on the side of the air outlet cylinder away from the exhaust passage, the length of the air outlet extends along a second horizontal direction, and the first horizontal direction intersects the second horizontal direction. 2.The tunnel compound dust removal device according to claim 1, characterized in that: the air outlet cylinder is connected with the lower surface of the exhaust passage, and the air outlet direction of the air outlet is perpendicular to the horizontal plane. 3.The tunnel compound dust removal device according to claim 2, characterized in that: the cross-sectional area of the air inlet end of the air outlet cylinder gradually increases from the air inlet end to the air outlet end of the air outlet cylinder. 4.The tunnel compound dust removal device according to any one of claims 1 to 3, characterized in that: the tunnel compound dust removal device further comprises a filter, the filter is arranged in the exhaust passage, the filter is arranged close to the air inlet end of the exhaust passage relative to the exhaust mechanism, and the filter comprises activated carbon and a filter screen. 5.The tunnel compound dust removal device according to claim 4, characterized in that: the tunnel compound dust removal device further comprises a settling mechanism, the settling mechanism is arranged outside the exhaust passage and close to the air inlet end of the exhaust passage, and the settling mechanism comprises an atomized jet water gun, the atomized jet water gun sprays towards the air inlet of the exhaust passage. 6.The tunnel compound dust removal device according to any one of claims 1 to 3, characterized in that: the tunnel compound dust removal device further comprises a wind pressure detection device and a control device which are electrically connected with each other, the wind pressure detection device transmits the detected wind pressure signal to the control device, the exhaust mechanism and the air outlet mechanism are electrically connected with the control device, and the control device controls the power of the exhaust mechanism and the air outlet mechanism. 7.The tunnel compound dust removal device according to claim 6, characterized in that: the wind pressure detection device comprises two wind pressure measurement plate assemblies, each of the wind pressure measurement plate assemblies comprises a rotating shaft, a connecting rod, an angle measurement sensor and a wind pressure measurement plate, the rotating shaft is rotatably arranged on the mounting frame, the two ends of the connecting rod are connected with the rotating shaft and the wind pressure measurement plate respectively, the wind pressure measurement plate is arranged directly below the air outlet of the first air curtain device, and the angle measurement sensor is arranged on the mounting frame to detect the deflection angle of the rotating shaft. One of the air pressure measuring plate assemblies is arranged directly below the air outlet of the first air curtain device, and the other air pressure measuring plate assembly is arranged directly below the air outlet of the second air curtain device. 8.The tunnel composite dust removal equipment according to claim 6, characterized in that: The tunnel composite dust removal equipment further comprises a camera and a smoke sensor, and the camera and the smoke sensor are electrically connected with the control device. 9.The tunnel composite dust removal equipment according to any one of claims 1 to 3, characterized in that: At least one blocking piece is arranged on the outer side of the tunnel composite dust removal equipment, one of the blocking pieces is arranged in the same vertical plane as the air outlet of one of the air curtain devices, and the blocking piece blocks the space between the tunnel composite dust removal equipment and the outer side wall of the tunnel. Alternatively, the number of the blocking pieces is two, one of the blocking pieces is arranged in one-to-one correspondence with one of the air curtain devices, and the blocking piece is arranged in the same vertical plane as the air outlet of the air curtain device. 10.The tunnel composite dust removal equipment according to any one of claims 1 to 3, characterized in that: The mounting frame surrounds a trolley passage, and the trolley passage is arranged below the air curtain device.

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