Ventilation device for subway construction

Abstract

The invention relates to the technical field of ventilation equipment, in particular to a ventilation device for subway construction, which comprises a shell, a liquid storage cavity, an air suction cavity and an equipment cavity are arranged in the shell, a fan is fixed in the air suction cavity, the air suction end of the fan is communicated with the interior of the liquid storage cavity, the liquid storage cavity is filled with a treatment solution, and the equipment cavity is communicated with the air suction end of the fan. A plurality of treatment pipes are rotationally connected into the liquid storage cavity, a driving part is arranged in the equipment cavity and used for driving the treatment pipes to rotate, the extrusion assembly is arranged, the adsorption part is intermittently extruded, sewage in the adsorption part is discharged, frequent replacement is not needed, and the treatment efficiency is improved. And the water storage tank can continuously and timely fill a new water solution into the filtering piece, so that the filtering effect is ensured.

Description

Technical Field

[0001] The invention relates to the field of ventilation equipment, and in particular to a ventilation device for subway construction. Background Art

[0002] During subway construction, operations such as excavation, drilling, and blasting will generate a lot of dust. These dusts contain a variety of components, such as soil particles and building material powder. Construction workers are exposed to high-concentration dust environments for a long time, and dust will enter the human body through the respiratory tract. For example, long-term inhalation of cement dust may cause silicosis, fibrosis of lung tissue, and decreased respiratory function. Dust removal and humidification can effectively reduce the dust content in the air and reduce the risk of construction workers suffering from respiratory diseases and occupational diseases. Most existing dust removal equipment inhales gas, filters it through a built-in filter, and then discharges the gas. Due to the high dust concentration at the construction site, the filter elements in ordinary dust removal equipment will quickly become saturated, requiring frequent replacement of the filter elements, which is relatively cumbersome to operate. On the other hand, most of the filtered and discharged gas is dry gas, which is directly discharged to the construction site and is likely to cause dust again, which is not conducive to ventilation during the construction process. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a vacuum automatic welding process for stainless steel metal pipes.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is: a ventilation device for subway construction, comprising a shell, wherein a liquid storage chamber, an air suction chamber, and an equipment chamber are arranged inside the shell, a fan is fixed inside the air suction chamber, and the air suction end of the fan is connected to the inside of the liquid storage chamber, the inside of the liquid storage chamber is filled with a treatment solution, a plurality of treatment pipes are rotatably connected in the liquid storage chamber, and a driving member is arranged in the equipment chamber, and the driving member is used to drive the treatment pipe to rotate; An air inlet is provided on the outer wall of the shell, one end of the treatment pipe is connected to the air inlet, a plurality of sewage discharge grooves are provided on the surface of the other end of the treatment pipe, a plurality of filter screens are fixed inside the treatment pipe, and an elastic adsorbent is connected to the surface of the filter screen; A plurality of water storage tanks are fixed on the outer wall of the treatment tube, a one-way valve is installed in the water inlet of the water storage tank, the water storage tank is connected with the inside of the treatment tube through a pipeline, and the opening position of the pipeline is set at the edge of the adsorption member; The inner wall of the treatment tube is provided with an inclined surface, the lowest point of which is provided at one end close to the sewage discharge groove, and the interior of the treatment tube is also provided with an extrusion component, and the extrusion component is used to squeeze the adsorption member during the rotation of the treatment tube; A partition is fixed on the inner wall of the liquid storage chamber, and the partition is rotatably sleeved on the outside of the treatment tube. The partition divides the liquid storage chamber into a clean water chamber and a sewage chamber. A water inlet pipe is fixedly connected to the outer wall of the clean water chamber, and a drain pipe is fixedly connected to the outer wall of the sewage chamber.

[0005] Preferably, the extrusion assembly includes a sleeve, which is fixed on the inner wall of the processing tube, a movable rod is inserted inside the sleeve, a first spring is fixed between the movable rod and the sleeve, and a guide column is fixed to the movable rod after passing through the filter and the adsorbent, a plurality of protrusions are fixed on the surface of the guide column, and a first guide groove is provided between adjacent protrusions, a bracket is fixed on the inner wall of the air intake port, a push column is fixed on the bracket, and the push column is inserted inside the first guide groove, and an extrusion net is provided on the surface of the movable rod, and the extrusion net is provided on the side of the adsorbent away from the filter.

[0006] Preferably, the mesh number of the filter screen is greater than the mesh number of the extrusion screen.

[0007] Preferably, a guide cylinder is fixed on the side of the filter screen close to the extrusion screen, and a second guide groove is provided on the guide cylinder, and the second guide groove is composed of a plurality of inclined grooves and a plurality of straight grooves connected in sequence; a sliding hole is provided in the middle of the extrusion screen, and the sliding hole is slidably sleeved on the outer wall of the guide cylinder; a guide pin is fixed on the inner wall of the surface of the sliding hole, and the guide pin is inserted inside the second guide groove; a one-way limit assembly is provided at the connecting position of the straight groove and the inclined groove, and the one-way limit assembly is used to limit the movement of the guide pin into the straight groove; a sliding cylinder is rotatably connected to the surface of the extrusion screen, and the sliding cylinder is slidably connected to the movable rod.

[0008] Preferably, the one-way limiting assembly comprises an elastic guide piece, the elastic guide piece is obliquely arranged inside the straight groove, and the end of the elastic guide piece is fixed on the inner wall of the straight groove.

[0009] Preferably, there is a gap between the extruded mesh and the adsorbent.

[0010] Preferably, a plurality of slag discharge grooves are provided on the inner wall of the processing tube, and the slag discharge grooves are arranged at the outer wall edge of the adsorbent. A plurality of support blocks are fixed to the outer wall edge of the filter screen, and the support blocks are fixed to the inner wall of the slag discharge grooves, and a slag discharge channel is formed between adjacent support blocks.

[0011] Preferably, the adsorbent includes a positioning ring, which is fixed on the filter screen, and a plurality of arc strips are fixed on the outer wall of the positioning ring, and a fan-shaped sponge sheet is fixed on the side wall of each arc strip, and the edge of the sponge sheet extends into the slag discharge groove, and there is an adjustment groove between adjacent sponge sheets, and a pushing component is arranged in the adjustment groove, and the pushing component is used to push one side of the sponge sheet to expose the slag discharge channel.

[0012] Preferably, the pushing assembly includes a pushing plate and a fixing plate, the pushing plate is arranged on one side of the sponge plate, the fixing plate is arranged on the other side of the sponge plate, the pushing plate is rotatably connected to the positioning ring, the fixing plate is fixed to the sponge plate, an elastic telescopic rod is fixed on the surface of the pushing plate, the end of the elastic telescopic rod is made of rubber, and the surface of the elastic telescopic rod is in contact with the surface of the extrusion net.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention adsorbs dust through a wet adsorbent to enhance the adsorption effect. The flowing aqueous solution also has a flushing effect. Part of the adsorbed dust will flow away with the flowing aqueous solution. Since an inclined surface is provided on the inner wall of the treatment tube, the aqueous solution can flow along the inclined surface to the sewage discharge groove, and automatically discharge part of the dust from the treatment tube, thereby realizing automatic cleaning of the adsorbent.

[0014] Second, the present invention provides an extrusion component to intermittently extrude the adsorption element to discharge the sewage inside it without frequent replacement, and the water storage tank can continuously fill the filter element with new aqueous solution in a timely manner, which is also conducive to ensuring the filtering effect.

[0015] 3. The gas sucked in by the present invention is discharged after being humidified by the aqueous solution, so that the gas is moist, and the moist gas can suppress the dust from being raised at the construction site. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention.

[0018] Figure 3 It is a schematic diagram of the position relationship between the air inlet and the shell of the present invention.

[0019] Figure 4 It is a schematic diagram of the structure of the bracket and the guide column of the present invention.

[0020] Figure 5 It is a schematic diagram of the cross-sectional structure of the processing tube of the present invention.

[0021] Figure 6 It is a schematic diagram of the cross-sectional structure of the extrusion screen and the sliding cylinder of the present invention.

[0022] Figure 7 It is a schematic diagram of the guide cylinder and guide pin structure of the present invention.

[0023] Figure 8 It is a schematic diagram of the slag discharge trough, extrusion net, sponge sheet and filter screen structure of the present invention.

[0024] Fig. 9 It is a schematic diagram of the structure of the sponge sheet, the pushing sheet and the fixing sheet of the present invention.

[0025] In the figure: 1, shell; 2, liquid storage chamber; 201, clean water chamber; 202, sewage chamber; 3, air suction chamber; 4, equipment chamber; 5, fan; 6, treatment pipe; 7, driving member; 8, air inlet; 9, sewage discharge channel; 10, filter screen; 11, water storage tank; 12, one-way valve; 13, pipeline; 14, inclined plane; 15, sleeve; 16, movable rod; 17, first spring; 18, guide column; 19, bump; 20, first guide groove; 21, bracket; 22, push column; 23 , extrusion net; 24, guide cylinder; 25, second guide groove; 26, inclined groove; 27, straight groove; 28, sliding hole; 29, guide pin; 30, sliding cylinder; 31, elastic guide plate; 32, gap; 33, slag discharge groove; 34, support block; 35, slag discharge channel; 36, positioning ring; 37, sponge plate; 38, adjustment groove; 39, push plate; 40, fixed plate; 41, elastic telescopic rod; 42, partition; 43, water inlet pipe; 44, drain pipe; 45, arc strip. DETAILED DESCRIPTION

[0026] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0027] like Figures 1 to 9 A ventilation device for subway construction shown in the figure comprises a shell 1, wherein a liquid storage chamber 2, an air suction chamber 3, and an equipment chamber 4 are arranged inside the shell 1, a fan 5 is fixed inside the air suction chamber 3, the air suction end of the fan 5 is communicated with the inside of the liquid storage chamber 2, the inside of the liquid storage chamber 2 is filled with a treatment solution, a plurality of treatment tubes 6 are rotatably connected in the liquid storage chamber 2, a driving member 7 is arranged in the equipment chamber 4, the driving member 7 is used to drive the treatment tube 6 to rotate, the driving member 7 can be a motor, the motor is fixed on the inner wall of the equipment chamber 4, the output shaft of the motor is coaxially fixed with the treatment tube 6, so that the treatment tube 6 can be driven to rotate by starting the motor, an air suction port 8 is opened on the outer wall of the shell 1, one end of the treatment tube 6 is connected to the The air inlet 8 is connected, and a plurality of sewage discharge grooves 9 are provided on the surface of the other end of the treatment pipe 6. A plurality of filter screens 10 are fixed inside the treatment pipe 6, and an elastic adsorbent is connected to the surface of the filter screen 10. A plurality of water storage tanks 11 are fixed on the outer wall of the treatment pipe 6, and a one-way valve 12 is installed in the water inlet of the water storage tank 11. The water storage tank 11 is connected with the inside of the treatment pipe 6 through a pipe 13, and the opening position of the pipe 13 is set at the edge of the adsorbent. A slope 14 is set on the inner wall of the treatment pipe 6, and the lowest point of the slope 14 is set at one end close to the sewage discharge groove 9. An extrusion component is also provided inside the treatment pipe 6, and during the rotation of the treatment pipe 6, the extrusion component is used to extrude the adsorbent.

[0028] Specifically, in order to reduce the number of times the filter element is replaced and to avoid the exhaust gas causing dust again, the present invention extracts gas through the fan 5 to generate negative pressure inside the liquid storage chamber 2. Since the sewage discharge groove 9 set at the end of the treatment tube 6 is connected to the inside of the liquid storage chamber 2, negative pressure is generated inside the treatment tube 6. External gas enters the treatment tube 6 from the air inlet 8, and the gas is filtered by the adsorbent on the filter screen 10. Since the interior of the shell 1 is filled with a treatment solution, the treatment solution can be an aqueous solution, and its liquid level is just in contact with the bottom outer wall of the treatment tube 6. During the filtering process, the treatment tube 6 is driven to rotate by the driving member 7, so that the water tank 11 enters the water in turn. Under the action of water pressure, water can enter the interior of the water tank 11 from the position of the one-way valve 12 of the water tank 11, and the one-way valve 12 can limit the backflow of water. When the height of the water tank 11 is raised, the aqueous solution in the water tank 11 is discharged from the pipeline 1. 3 flows to the inside of the treatment pipe 6 and soaks the adsorbent. On the one hand, the dust can be adsorbed by the wet adsorbent to enhance the adsorption effect. On the other hand, the flowing aqueous solution also has a flushing effect. Part of the adsorbed dust will flow away with the flowing aqueous solution. Since the inner wall of the treatment pipe 6 is provided with an inclined surface 14, the aqueous solution can flow along the inclined surface 14 to the sewage discharge groove 9, and automatically discharge part of the dust from the treatment pipe 6, thereby realizing automatic cleaning of the adsorbent. Furthermore, after the gas is humidified and discharged by the aqueous solution, the humid gas can suppress the dust from the construction site, which can further reduce the generation of dust. In the prior art, the filter element needs to be replaced in time after it is saturated. The present invention intermittently extrude the adsorbent by setting an extrusion component to discharge the sewage inside it without frequent replacement, and the water storage tank 11 can continuously fill the filter element with new aqueous solution in time, which is also conducive to ensuring the filtering effect.

[0029] As a further embodiment of the present invention, the extrusion assembly includes a sleeve 15, which is fixed on the inner wall of the processing tube 6. A movable rod 16 is inserted inside the sleeve 15, and a first spring 17 is fixed between the movable rod 16 and the sleeve 15. After the movable rod 16 passes through the filter 10 and the adsorbent, a guide column 18 is fixed thereon. A plurality of protrusions 19 are fixed on the surface of the guide column 18, and a first guide groove 20 is provided between adjacent protrusions 19. A bracket 21 is fixed on the inner wall of the air intake port 8, and a push column 22 is fixed on the bracket 21. The push column 22 is inserted inside the first guide groove 20. An extrusion net 23 is provided on the surface of the movable rod 16, and the extrusion net 23 is provided on the side of the adsorbent away from the filter 10.

[0030] Specifically, the movable rod 16 is cylindrical, and a convex strip is fixed on its surface. The length of the convex strip is the same as that of the movable rod 16. The convex strip is slidably connected to the sleeve 15 to limit the relative rotation between the movable rod 16 and the sleeve 15. This is the prior art and will not be described in detail here. Since the processing tube 6 is in a state of continuous rotation, the sleeve 15 and the movable rod 16 are driven to rotate by the processing tube 6. The pushing column 22 is initially inside one of the first guide grooves 20. During the rotation of the movable rod 16, the pushing column 22 moves from the first guide groove 20 to the position of the protrusion 19. During the movement, the movable rod 16 will gradually be pushed to the side away from the pushing column 22 until the pushing column 22 moves to the highest point of the protrusion 19, and the pushing distance is the farthest. Under the elastic force of the first spring 17, the movable rod 16 always has a tendency to move toward the side close to the pushing column 22. With the rotation of the guide column 18, when the push column 22 moves from the highest point of the protrusion 19 to the inside of the first guide groove 20, under the pushing action of the first spring 17, the movable rod 16 returns to its initial position, thereby completing the reciprocating movement of the movable rod 16, wherein the number of protrusions 19 can be set according to actual needs. When the number of protrusions 19 is large, the movement frequency of the movable rod 16 is high, and when the number of protrusions 19 is small, the movement frequency of the movable rod 16 is low. In the process of the movement of the movable rod 16, the extrusion net 23 connected to it will be driven to move, squeeze the adsorbent and then loosen it. In the process of squeezing, the sewage inside the adsorbent is discharged and the adsorbent is cleaned, which is beneficial to reduce the replacement frequency of the adsorbent and ensure that the adsorbent can always maintain a good adsorption effect. In the loosening process, the water tank 11 can continue to fill the filter element with new aqueous solution in time to ensure the filtering effect.

[0031] As a further embodiment of the present invention, the mesh number of the filter screen 10 is greater than the mesh number of the extrusion screen 23 .

[0032] Specifically, since the mesh size of the extruded mesh 23 is small, it is convenient for gas to pass through, while the mesh size of the filter 10 is large, it is not convenient for gas to pass through, so that the gas can be concentrated between the extruded mesh 23 and the filter 10, increasing the residence time of the gas, thereby increasing the contact opportunity between the gas and the adsorbent, and improving the adsorption effect.

[0033] As a further implementation scheme of the present invention, a guide cylinder 24 is fixed to the side of the filter 10 close to the extrusion net 23, and a second guide groove 25 is opened on the guide cylinder 24, and the second guide groove 25 is composed of a plurality of inclined grooves 26 and a plurality of straight grooves 27 connected in sequence. A sliding hole 28 is opened in the middle of the extrusion net 23, and the sliding hole 28 is slidably sleeved on the outer wall of the guide cylinder 24. A guide pin 29 is fixed on the inner wall of the surface of the sliding hole 28, and the guide pin 29 is inserted into the inside of the second guide groove 25. A one-way limit assembly is provided at the connecting position of the straight groove 27 and the inclined groove 26. The one-way limit assembly is used to limit the movement of the guide pin 29 into the straight groove 27. The surface of the extrusion net 23 is rotatably connected with a sliding cylinder 30, and the sliding cylinder 30 is slidably connected to the movable rod 16.

[0034] Specifically, in the process of the movable rod 16 driving the squeezing net 23 to squeeze the adsorbent, although self-cleaning can be achieved, it will also cause partial wear to the adsorbent, and the surface of the squeezing net 23 is provided with mesh holes for facilitating the passage of gas. In the squeezing process, due to the existence of the mesh holes, the squeezing pressure will be uneven, resulting in aggravated wear of the local position of the adsorbent, affecting the adsorption performance. This embodiment can solve the above problems. The specific working method is as follows: the guide pin 29 is initially at the connection point of the inclined groove 26 and the straight groove 27. In the process of the squeezing net 23 moving, the guide pin 29 is located ... Under the blocking effect of the component, the guide pin 29 will be guided into the inclined groove 26, so that the guide pin 29 slides into the inclined groove 26, and under the guiding effect of the inclined groove 26, the extrusion net 23 can be driven to rotate and switch the extrusion position. Secondly, when resetting, the guide pin 29 moves in the straight groove 27 to reset, so that after each extrusion is completed, the position of the extrusion net 23 will change, and at the next extrusion, a new switch will be made, which is beneficial to avoid serious wear of the local position of the adsorption component, affecting the adsorption performance, and thus helping to ensure the service life of the adsorption component.

[0035] As a further embodiment of the present invention, the one-way limit assembly includes an elastic guide piece 31 , which is obliquely arranged inside the straight groove 27 , and an end of the elastic guide piece 31 is fixed on the inner wall of the straight groove 27 .

[0036] Specifically, during the movement of the extrusion net 23, the guide pin 29 will be driven to contact the elastic guide piece 31. Since the elastic guide piece 31 is inclined, one end is fixed and the other end is in an active state. Under the push of the guide pin 29, one end of the elastic guide piece 31 gradually approaches the inner wall of the straight groove 27 and finally abuts against the inner wall of the straight groove 27 to block the guide pin 29. At this time, the elastic guide piece 31 is in an inclined state and can guide the guide pin 29 into the inclined groove 26, so that the guide pin 29 can slide into the inclined groove 26. When the guide pin 29 slides in the straight groove 27 toward the connection with the inclined groove 26, since the elastic guide piece 31 is inclined, when the guide pin 29 contacts the elastic guide piece 31, it will push the elastic guide piece 31 to flip and make way. Until the guide pin 29 passes through the elastic guide piece 31, the elastic guide piece 31 will be reset to re-form the one-way limit state to achieve the one-way limit function.

[0037] As a further embodiment of the present invention, there is a gap 32 between the extruded mesh 23 and the adsorbent.

[0038] Specifically, if the extrusion net 23 is directly in close contact with the adsorption part, part of the position of the adsorption part will be blocked, affecting the adsorption effect. By setting the gap 32, on the one hand, it can avoid blocking and ensure the adsorption effect. On the other hand, by setting the gap 32, when the extrusion net 23 rotates in the early stage of movement, it does not contact the adsorption part, which is also conducive to switching the extrusion position in advance.

[0039] As a further implementation scheme of the present invention, a plurality of slag discharge grooves 33 are opened on the inner wall of the processing tube 6, and the slag discharge grooves 33 are arranged at the outer wall edge position of the adsorption component. A plurality of support blocks 34 are fixed to the outer wall edge of the filter screen 10, and the support blocks 34 are fixed to the inner wall of the slag discharge grooves 33, and a slag discharge channel 35 is formed between adjacent support blocks 34.

[0040] Specifically, during the filtering process, some large particles of impurities may accumulate on one side of the adsorbent, and it is difficult for them to pass through the adsorbent even if squeezed. The present invention provides a slag discharge groove 33 to allow the impurities to pass through the slag discharge groove 33, thereby avoiding impurity accumulation.

[0041] As a further implementation scheme of the present invention, the adsorbent includes a positioning ring 36, which is fixed on the filter screen 10. A plurality of arc strips 45 are fixed on the outer wall of the positioning ring 36. A fan-shaped sponge sheet 37 is fixed on the side wall of each arc strip 45. The edge of the sponge sheet 37 extends into the slag discharge groove 33. Adjustment grooves 38 are provided between adjacent sponge sheets 37. A pushing assembly is provided in the adjustment grooves 38. The pushing assembly is used to push one side of the sponge sheet 37 to expose the slag discharge channel 35.

[0042] Specifically, by extending the sponge sheet 37 into the slag discharge groove 33, it is possible to prevent gas from overflowing from the slag discharge groove 33 and affecting the filtering effect, so that impurities are blocked on one side of the sponge sheet 37 when not squeezed. When the sponge sheet 37 is squeezed, the pushing action of the pushing component can push the sponge sheet 37 from the side, so that the sponge sheet 37 is squeezed and contracted, and the slag discharge channel 35 behind it is exposed, so that impurities can be discharged from the slag discharge channel 35. It can be seen that when filtering, the sponge sheet 37 can fill the slag discharge groove 33 to prevent gas from overflowing from this position and affecting the filtering effect. When the sponge sheet 37 is squeezed to discharge sewage, the filling effect can be canceled simultaneously, and the slag discharge function of the slag discharge groove 33 is enabled, which is not only convenient for the discharge of accumulated impurities, but also convenient for the discharge of impurities cleaned out of the sponge sheet 37 during the squeezing process.

[0043] As a further embodiment of the present invention, the pushing component includes a pushing plate 39 and a fixing plate 40. The pushing plate 39 is arranged on one side of the sponge plate 37, and the fixing plate 40 is arranged on the other side of the sponge plate 37. The pushing plate 39 is rotatably connected to the positioning ring 36, and the fixing plate 40 is fixed to the sponge plate 37. An elastic telescopic rod 41 is fixed on the surface of the pushing plate 39, and the end of the elastic telescopic rod 41 is made of rubber. The surface of the elastic telescopic rod 41 contacts the surface of the extrusion net 23.

[0044] Specifically, since the extrusion net 23 will rotate synchronously during the extrusion process, during the rotation process, since the end of the elastic telescopic rod 41 is made of rubber material, the friction force is relatively large, and it contacts the surface of the extrusion net 23. During the rotation of the extrusion net 23, under the action of friction, the elastic telescopic rod 41 moves with the extrusion net 23, thereby driving the pushing sheet 39 to flip through the elastic telescopic rod 41, squeezing the sponge sheet 37 from the side, exposing the slag discharge channel 35, thereby facilitating the removal of accumulated impurities, and as the distance between the extrusion net 23 and the sponge sheet 37 decreases, the elastic telescopic rod 41 can shrink and make way to ensure the extrusion function of the extrusion net 23. Secondly, the thickness of the fixed sheet 40 and the pushing sheet 39 is less than the thickness of the sponge sheet 37, thereby avoiding adverse effects on the extrusion function of the extrusion net 23.

[0045] As a further implementation scheme of the present invention, a partition 42 is fixed on the inner wall of the liquid storage chamber 2, and the partition 42 is rotatably mounted on the outside of the treatment tube 6. The partition 42 divides the liquid storage chamber 2 into a clean water chamber 201 and a sewage chamber 202. A water inlet pipe 43 is fixedly connected to the outer wall of the clean water chamber 201, and a drain pipe 44 is fixedly connected to the outer wall of the sewage chamber 202.

[0046] Specifically, by separating clean water from sewage, it is possible to avoid contamination of clean water by discharged sewage, which is beneficial to improving the filtering effect. By connecting the water inlet pipe 43 to an external clean water adding device, clean water can be continuously added to the clean water chamber 201, which is beneficial to improving the filtering and cleaning effect of the adsorbent. The sewage in the sewage chamber 202 can be discharged through the drain pipe 44, and the drain pipe 44 can also be connected to a sewage filter to filter the sewage and reuse it.

[0047] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A ventilation device for subway construction, comprising a shell (1), wherein a liquid storage chamber (2), an air suction chamber (3), and an equipment chamber (4) are arranged inside the shell (1), a fan (5) is fixed inside the air suction chamber (3), and an air suction end of the fan (5) is communicated with the inside of the liquid storage chamber (2), characterized in that: The liquid storage chamber (2) is filled with a treatment solution, a plurality of treatment tubes (6) are rotatably connected in the liquid storage chamber (2), a driving member (7) is provided in the equipment chamber (4), and the driving member (7) is used to drive the treatment tubes (6) to rotate; An air inlet (8) is provided on the outer wall of the shell (1), one end of the processing pipe (6) is connected to the air inlet (8), a plurality of sewage discharge grooves (9) are provided on the surface of the other end of the processing pipe (6), a plurality of filter screens (10) are fixed inside the processing pipe (6), and a flexible adsorption member is connected to the surface of the filter screen (10); A plurality of water storage tanks (11) are fixed on the outer wall of the treatment tube (6), a one-way valve (12) is installed in the water inlet of the water storage tank (11), the water storage tank (11) is connected to the inside of the treatment tube (6) through a pipe (13), and the opening position of the pipe (13) is arranged at the edge of the adsorption member; The inner wall of the processing tube (6) is provided with an inclined surface (14), the lowest point of the inclined surface (14) being arranged at one end close to the sewage discharge groove (9), and the interior of the processing tube (6) is also provided with an extrusion component, and the extrusion component is used to squeeze the adsorption component during the rotation of the processing tube (6); A partition plate (42) is fixed on the inner wall of the liquid storage chamber (2), and the partition plate (42) is rotatably sleeved on the outer side of the treatment tube (6). The partition plate (42) divides the liquid storage chamber (2) into a clean water chamber (201) and a sewage chamber (202). A water inlet pipe (43) is fixedly connected to the outer wall of the clean water chamber (201), and a drainage pipe (44) is fixedly connected to the outer wall of the sewage chamber (202).

2. A ventilation device for subway construction according to claim 1, characterized in that: The extrusion assembly comprises a sleeve (15), the sleeve (15) being fixed on the inner wall of the processing tube (6), a movable rod (16) being inserted inside the sleeve (15), a first spring (17) being fixed between the movable rod (16) and the sleeve (15), a guide column (18) being fixed to the movable rod (16) after passing through the filter screen (10) and the adsorbent, a plurality of protrusions (19) being fixed to the surface of the guide column (18), a first guide groove (20) being provided between adjacent protrusions (19), a bracket (21) being fixed on the inner wall of the air inlet (8), a push column (22) being fixed on the bracket (21), the push column (22) being inserted inside the first guide groove (20), a squeezing net (23) being provided on the surface of the movable rod (16), the squeezing net (23) being provided on the side of the adsorbent away from the filter screen (10).

3. A ventilation device for subway construction according to claim 2, characterized in that: The mesh number of the filter screen (10) is greater than the mesh number of the extrusion screen (23).

4. A ventilation device for subway construction according to claim 2, characterized in that: A guide cylinder (24) is fixed on one side of the filter screen (10) close to the extrusion screen (23), and a second guide groove (25) is provided on the guide cylinder (24), and the second guide groove (25) is composed of a plurality of inclined grooves (26) and a plurality of straight grooves (27) connected in sequence. A sliding hole (28) is provided in the middle of the extrusion screen (23), and the sliding hole (28) is slidably sleeved on the outer wall of the guide cylinder (24). A guide pin (29) is fixed on the inner wall of the surface of the sliding hole (28), and the guide pin (29) is inserted into the second guide groove (25). A one-way limit assembly is provided at the communication position between the straight groove (27) and the inclined groove (26), and the one-way limit assembly is used to limit the guide pin (29) from moving into the straight groove (27). A sliding cylinder (30) is rotatably connected to the surface of the extrusion screen (23), and the sliding cylinder (30) is slidably connected to the movable rod (16).

5. A ventilation device for subway construction according to claim 4, characterized in that: The one-way limiting assembly comprises an elastic guide piece (31), the elastic guide piece (31) is arranged obliquely inside the straight groove (27), and the end of the elastic guide piece (31) is fixed on the inner wall of the straight groove (27).

6. A ventilation device for subway construction according to claim 4, characterized in that: There is a gap (32) between the extrusion net (23) and the adsorption member.

7. A ventilation device for subway construction according to claim 4, characterized in that: A plurality of slag discharge grooves (33) are provided on the inner wall of the processing tube (6), the slag discharge grooves (33) are arranged at the outer wall edge of the adsorption member, a plurality of support blocks (34) are fixed to the outer wall edge of the filter screen (10), the support blocks (34) are fixed to the inner wall of the slag discharge grooves (33), and slag discharge channels (35) are formed between adjacent support blocks (34).

8. A ventilation device for subway construction according to claim 7, characterized in that: The adsorption component comprises a positioning ring (36), the positioning ring (36) being fixed on the filter screen (10), a plurality of arc-shaped strips (45) being fixed on the outer wall of the positioning ring (36), a fan-shaped sponge sheet (37) being fixed on the side wall of each of the arc-shaped strips (45), the edge of the sponge sheet (37) extending into the slag discharge groove (33), an adjustment slot (38) being provided between adjacent sponge sheets (37), a pushing component being provided in the adjustment slot (38), the pushing component being used to push one side of the sponge sheet (37) to expose the slag discharge channel (35).

9. A ventilation device for subway construction according to claim 8, characterized in that: The pushing assembly comprises a pushing piece (39) and a fixing piece (40), wherein the pushing piece (39) is arranged on one side of the sponge piece (37), and the fixing piece (40) is arranged on the other side of the sponge piece (37), the pushing piece (39) is rotatably connected to the positioning ring (36), and the fixing piece (40) is fixed to the sponge piece (37), and an elastic telescopic rod (41) is fixed on the surface of the pushing piece (39), the end of the elastic telescopic rod (41) is made of rubber, and the surface of the elastic telescopic rod (41) is in contact with the surface of the extrusion net (23).

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