A ventilation device for subway construction

Abstract

The present invention relates to the technical field of ventilation equipment, in particular to a ventilation and air exchange device for subway construction, which comprises a housing. A liquid storage chamber, a suction air chamber and an equipment chamber are arranged inside the housing. A fan is fixed inside the suction air chamber, and the suction end of the fan is communicated with the inside of the liquid storage chamber. A treatment solution is filled inside the liquid storage chamber, and a plurality of treatment pipes are rotatably connected inside the liquid storage chamber. A driving member is arranged inside the equipment chamber, and the driving member is used for driving the treatment pipes to rotate. By setting an extrusion assembly, the adsorbent is intermittently extruded to discharge the sewage inside it, so that frequent replacement is not required. Moreover, the water storage tank can continuously and timely fill new aqueous solution into the filter element, which is also beneficial to ensuring the filtering effect.

Description

Technical Field

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

[0002] During subway construction, operations such as excavation, drilling, and blasting will generate a large amount of dust. This dust contains various components, such as soil particles and building material powders. When construction workers are exposed to a high-concentration dust environment for a long time, the dust will enter the human body through the respiratory tract. For example, long-term inhalation of cement dust may lead to silicosis, which will cause fibrosis of lung tissue and result in a decline in 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;

[0003] Existing dust removal equipment mostly inhales gas, filters it through an internal filter element, and then discharges the gas. Due to the high dust concentration at the construction site, the filter element in ordinary dust removal equipment will become saturated quickly and needs to be replaced frequently, which is rather cumbersome in operation. On the other hand, most of the filtered and discharged gas is dry gas, and directly discharging the dry gas to the construction site is also likely to cause dust to rise again, which is not conducive to ventilation and air exchange during the construction process. Summary of the Invention

[0004] The purpose of the present invention is to solve the deficiencies existing in the prior art and to propose a ventilation and air exchange device for subway construction.

[0005] To achieve the above object, the technical solution adopted by the present invention is: a ventilation and air exchange device for subway construction, including a housing. A liquid storage chamber, a suction air chamber, and an equipment chamber are arranged inside the housing. A fan is fixed inside the suction air chamber, and the suction end of the fan is communicated with 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 inside the liquid storage chamber, and a driving member is arranged inside the equipment chamber for driving the treatment pipes to rotate;

[0006] An air inlet is provided on the outer wall of the housing. One end of the treatment pipe is communicated with the air inlet, and a plurality of sewage through grooves are provided on the surface of the other end of the treatment pipe. A plurality of filter meshes are fixed inside the treatment pipe, and elastic adsorption members are connected to the surface of the filter meshes;

[0007] A plurality of water storage tanks are fixed on the outer wall of the treatment pipe. A one-way valve is installed in the water inlet of the water storage tank, and the water storage tank is communicated with the inside of the treatment pipe through a pipeline. The opening position of the pipeline is arranged at the edge of the adsorption member;

[0008] An inclined surface is provided on the inner wall of the treatment pipe, and the lowest point of the inclined surface is arranged at one end close to the sewage discharge groove. An extrusion assembly is further arranged inside the treatment pipe, and during the rotation of the treatment pipe, the extrusion assembly is used to extrude the adsorption member;

[0009] A partition is fixed on the inner wall of the liquid storage cavity. The partition is rotatably sleeved on the outer side of the treatment pipe. The partition divides the liquid storage cavity into a clean water cavity and a sewage cavity. A water inlet pipe is fixedly communicated with the outer wall of the clean water cavity, and a drain pipe is fixedly communicated with the outer wall of the sewage cavity.

[0010] Preferably, the extrusion assembly includes a sleeve fixed on the inner wall of the treatment pipe. An activity rod is inserted inside the sleeve. A first spring is fixed between the activity rod and the sleeve. The activity rod passes through the filter screen and the adsorption member and then is fixed with a guiding column. A plurality of bumps are fixed on the surface of the guiding column. There is a first guiding groove between adjacent bumps. A bracket is fixed on the inner wall of the air inlet. A pushing column is fixed on the bracket. The pushing column is inserted inside the first guiding groove. An extrusion net is arranged on the surface of the activity rod, and the extrusion net is arranged on the side of the adsorption member away from the filter screen.

[0011] Preferably, the mesh number of the filter screen is larger than that of the extrusion net.

[0012] Preferably, a guiding cylinder is fixed on the side of the filter screen close to the extrusion net. A second guiding groove is formed on the guiding cylinder, and the second guiding groove is composed of a plurality of inclined grooves and a plurality of straight grooves connected in sequence. A sliding hole is formed in the middle of the extrusion net. The sliding hole is slidably sleeved on the outer wall of the guiding cylinder. A guiding pin is fixed on the inner wall of the surface of the sliding hole. The guiding pin is inserted inside the second guiding groove. A one-way limiting component is arranged at the connecting position of the straight groove and the inclined groove. The one-way limiting component is used to limit the guiding pin from moving into the straight groove. A sliding cylinder is rotatably connected to the surface of the extrusion net, and the sliding cylinder is slidably connected to the activity rod.

[0013] Preferably, the one-way limiting component includes an elastic guiding piece, and the elastic guiding piece is obliquely arranged inside the straight groove. The end of the elastic guiding piece is fixed on the inner wall of the straight groove.

[0014] Preferably, there is a gap between the extrusion net and the adsorption member.

[0015] Preferably, a plurality of slag discharge grooves are formed on the inner wall of the treatment pipe. The slag discharge grooves are arranged at the outer wall edge position of the adsorption member. A plurality of supporting blocks are fixed at the outer wall edge of the filter screen. The supporting blocks are fixed to the inner wall of the slag discharge groove, and slag discharge channels are formed between adjacent supporting blocks.

[0016] Preferably, the adsorbing member includes a positioning ring fixed to the filter net. A plurality of arc-shaped strips are fixed to the outer wall of the positioning ring. A fan-shaped sponge sheet is fixed to the side wall of each arc-shaped strip. The edge of the sponge sheet extends into the slag discharge groove. There is an adjustment through groove between adjacent sponge sheets. A pushing assembly is arranged in the adjustment through groove for pushing one side of the sponge sheet to expose the slag discharge channel.

[0017] Preferably, the pushing assembly includes a pushing sheet and a fixing sheet. The pushing sheet is arranged on one side of the sponge sheet, and the fixing sheet is arranged on the other side of the sponge sheet. The pushing sheet is rotatably connected to the positioning ring, and the fixing sheet is fixed to the sponge sheet. An elastic telescopic rod is fixed to the surface of the pushing sheet. The end of the elastic telescopic rod is made of rubber, and the surface of the elastic telescopic rod contacts the surface of the extrusion net.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] First, the present invention adsorbs dust through the wet adsorbing member 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 the inner wall of the treatment pipe is provided with an inclined surface, the aqueous solution can flow along the inclined surface to the sewage discharge groove, automatically discharging part of the dust from the treatment pipe, thereby realizing the automatic cleaning of the adsorbing member.

[0020] Second, the present invention intermittently squeezes the adsorbing member through the squeezing assembly to discharge the sewage inside it, eliminating the need for frequent replacement. And the water storage tank can continuously and timely fill the filter member with new aqueous solution, which is also beneficial to ensuring the filtering effect.

[0021] Third, the gas inhaled in the present invention is discharged after being humidified by the aqueous solution, making the gas humid. The humid gas can inhibit the dust from rising at the construction site. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the overall sectional structure of the present invention.

[0024] Figure 3 It is a schematic diagram of the positional relationship between the air inlet and the housing of the present invention.

[0025] Figure 4 It is a schematic diagram of the structure of the bracket and the guide post of the present invention.

[0026] Figure 5 It is a schematic diagram of the sectional structure of the treatment pipe of the present invention.

[0027] Figure 6Schematic cross-sectional structure diagram of the extrusion mesh and sliding cylinder of the present invention.

[0028] Figure 7 Schematic structure diagram of the guiding cylinder and guiding pin of the present invention.

[0029] Figure 8 Schematic structure diagram of the slag discharge groove, extrusion mesh, sponge sheet, and filter screen of the present invention.

[0030] Figure 9 Schematic structure diagram of the sponge sheet, pushing sheet, and fixing sheet of the present invention.

[0031] In the figure: 1. Housing; 2. Liquid storage chamber; 201. Fresh water chamber; 202. Sewage chamber; 3. Air suction chamber; 4. Equipment chamber; 5. Fan; 6. Processing pipe; 7. Driving member; 8. Air suction port; 9. Sewage discharge through groove; 10. Filter screen; 11. Water storage tank; 12. Check valve; 13. Pipeline; 14. Inclined surface; 15. Sleeve; 16. Movable rod; 17. First spring; 18. Guide post; 19. Protrusion; 20. First guide groove; 21. Bracket; 22. Pushing post; 23. Extrusion mesh; 24. Guiding cylinder; 25. Second guide groove; 26. Inclined groove; 27. Straight groove; 28. Sliding hole; 29. Guiding pin; 30. Sliding cylinder; 31. Elastic guiding piece; 32. Gap; 33. Slag discharge groove; 34. Support block; 35. Slag discharge channel; 36. Positioning ring; 37. Sponge sheet; 38. Adjusting through groove; 39. Pushing sheet; 40. Fixing sheet; 41. Elastic telescopic rod; 42. Partition board; 43. Water inlet pipe; 44. Drain pipe; 45. Arc-shaped strip. Detailed implementation manners

[0032] 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 in the following description are only examples, and those skilled in the art can think of other obvious variations.

[0033] As Figures 1 to 9A ventilation and air exchange device for subway construction shown in the figure includes a housing 1. Inside the housing 1, there are a liquid storage chamber 2, a suction air chamber 3, and an equipment chamber 4. A fan 5 is fixed inside the suction air chamber 3. The 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 pipes 6 are rotatably connected inside the liquid storage chamber 2. A driving member 7 is arranged inside the equipment chamber 4. The driving member 7 is used to drive the treatment pipes 6 to rotate. The driving member 7 can be selected as 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 pipes 6. Thus, starting the motor can drive the treatment pipes 6 to rotate. An air suction port 8 is opened on the outer wall of the housing 1. One end of the treatment pipe 6 is communicated with the air suction port 8. A plurality of sewage discharge through grooves 9 are opened on the surface of the other end of the treatment pipe 6. A plurality of filter meshes 10 are fixed inside the treatment pipe 6. An elastic adsorption member is connected to the surface of the filter mesh 10. A plurality of water storage tanks 11 are fixed on the outer wall of the treatment pipe 6. A one-way valve 12 is installed in the water inlet of the water storage tank 11. The water storage tank 11 is communicated with the inside of the treatment pipe 6 through a pipeline 13. The opening position of the pipeline 13 is arranged at the edge of the adsorption member. An inclined surface 14 is arranged on the inner wall of the treatment pipe 6. The lowest point of the inclined surface 14 is arranged at one end close to the sewage discharge through groove 9. An extrusion assembly is also arranged inside the treatment pipe 6. During the rotation of the treatment pipe 6, the extrusion assembly is used to extrude the adsorption member.

[0034] Specifically, in order to reduce the number of filter element replacements and avoid re - raising dust caused by the discharged gas, the present invention extracts gas through the blower 5, creating a negative pressure inside the liquid storage chamber 2. Since the sewage discharge groove 9 provided at the end of the treatment pipe 6 is connected to the inside of the liquid storage chamber 2, a negative pressure is generated inside the treatment pipe 6. External gas enters the inside of the treatment pipe 6 from the suction port 8 position, and the adsorbent on the filter screen 10 filters the gas. Since the inside of the housing 1 is filled with a treatment solution, the treatment solution can be an aqueous solution, and its liquid level just contacts the bottom outer wall of the treatment pipe 6. During the filtering process, the treatment pipe 6 is driven to rotate by the driving member 7, so that the water storage tank 11 successively enters the water. Under the action of water pressure, water can enter the inside of the water storage tank 11 from the check valve 12 position of the water storage tank 11, and the check valve 12 can limit the backflow of water. When the height of the water storage tank 11 is increased, the aqueous solution in the water storage tank 11 flows into the treatment pipe 6 from the pipeline 13 position and wets the adsorbent. On the one hand, the wet adsorbent can adsorb dust, strengthening the adsorption effect. On the other hand, the flowing aqueous solution also has a flushing effect, and 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, automatically discharging part of the dust from the treatment pipe 6, thus realizing the automatic cleaning of the adsorbent. Further, after the gas is discharged after being humidified by the aqueous solution, the humid gas can inhibit the dust raising at the construction site, further reducing the generation of dust. And in the prior art, the filter element needs to be replaced in time after being saturated, while the present invention sets up an extrusion assembly to intermittently extrude the adsorbent, discharging the sewage inside it, without the need for frequent replacement, and the water storage tank 11 can continuously and timely fill new aqueous solution into the filter element, which is also beneficial to ensuring the filtering effect.

[0035] As a further implementation of the present invention, the extrusion assembly includes a sleeve 15 fixed to the inner wall of the treatment pipe 6. An activity rod 16 is inserted inside the sleeve 15. A first spring 17 is fixed between the activity rod 16 and the sleeve 15. The activity rod 16 passes through the filter screen 10 and the adsorbent and is fixed with a guiding column 18. A plurality of bumps 19 are fixed on the surface of the guiding column 18, and there is a first guiding groove 20 between adjacent bumps 19. A bracket 21 is fixed on the inner wall of the suction port 8, and a pushing column 22 is fixed on the bracket 21. The pushing column 22 is inserted into the inside of the first guiding groove 20. An extrusion net 23 is arranged on the surface of the activity rod 16, and the extrusion net 23 is arranged on the side of the adsorbent away from the filter screen 10.

[0036] Specifically, the movable rod 16 is cylindrical, and convex strips are fixed on its surface. The length of the convex strips is the same as that of the movable rod 16. The movable rod 16 is slidably connected to the sleeve 15 through the convex strips, restricting relative rotation between the movable rod 16 and the sleeve 15. This is prior art and will not be elaborated here. Since the treatment pipe 6 is in a continuous rotating state, the sleeve 15 and the movable rod 16 are driven to rotate by the treatment pipe 6. The pushing column 22 is initially inside one of the first guiding grooves 20. During the rotation of the movable rod 16, the pushing column 22 moves from the first guiding groove 20 towards the position of the convex block 19. During the movement, the movable rod 16 will be gradually pushed to move towards the side away from the pushing column 22. When the pushing column 22 moves to the highest point of the convex block 19, 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 towards the side close to the pushing column 22. As the guiding column 18 rotates, when the pushing column 22 moves from the highest point of the convex block 19 to the inside of the first guiding groove 20, under the pushing action of the first spring 17, the movable rod 16 returns to its initial position, thus completing the reciprocating movement of the movable rod 16. Among them, the number of convex blocks 19 can be set according to actual needs. When the number of convex blocks 19 is large, the moving frequency of the movable rod 16 is high. When the number of convex blocks 19 is small, the moving frequency of the movable rod 16 is low. During the movement of the movable rod 16, the extrusion net 23 connected to it will be driven to move, squeezing and then loosening the adsorbent. During the squeezing process, the sewage inside the adsorbent is discharged, cleaning the adsorbent, which is beneficial to reducing the replacement frequency of the adsorbent and ensuring that the adsorbent can always maintain a good adsorption effect. During the loosening process, the water storage tank 11 can continuously and timely fill the filter element with a new aqueous solution to ensure the filtering effect.

[0037] As a further embodiment of the present invention, the mesh number of the filter screen 10 is greater than that of the extrusion net 23.

[0038] Specifically, since the mesh number of the extrusion net 23 is small, it is convenient for gas to pass through, while the mesh number of the filter screen 10 is large and it is not convenient for gas to pass through. Thus, the gas can be concentrated between the extrusion net 23 and the filter screen 10, increasing the residence time of the gas, and further increasing the contact opportunity between the gas and the adsorbent, improving the adsorption effect.

[0039] As a further embodiment of the present invention, a guiding cylinder 24 is fixed to the side of the filter screen 10 close to the extrusion screen 23. A second guiding groove 25 is formed in the guiding cylinder 24. The second guiding 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 formed in the middle of the extrusion screen 23. The sliding hole 28 is slidably sleeved on the outer wall of the guiding cylinder 24. A guiding pin 29 is fixed on the inner wall of the surface of the sliding hole 28. The guiding pin 29 is inserted into the inside of the second guiding groove 25. A one-way limiting component is arranged at the communicating position of the straight groove 27 and the inclined groove 26. The one-way limiting component is used to limit the guiding pin 29 from moving into the straight groove 27. A sliding cylinder 30 is rotatably connected to the surface of the extrusion screen 23. The sliding cylinder 30 is slidably connected to the movable rod 16.

[0040] Specifically, during the process of the movable rod 16 driving the extrusion screen 23 to extrude the adsorbent, although self-cleaning can be achieved, it will also cause partial wear to the adsorbent. Moreover, the surface of the extrusion screen 23 is provided with mesh holes for facilitating the passage of gas. During the extrusion process, due to the existence of the mesh holes, the extrusion pressure will be uneven, resulting in aggravated wear of the local position of the adsorbent and affecting the adsorption performance. This embodiment can solve the above problems. The specific working method is as follows. The guiding pin 29 is initially at the communicating position of the inclined groove 26 and the straight groove 27. During the movement of the extrusion screen 23, under the blocking action of the one-way limiting component, the guiding pin 29 will be guided into the inclined groove 26, so that the guiding pin 29 slides into the inside of the inclined groove 26. Under the guiding action of the inclined groove 26, the extrusion screen 23 can be driven to rotate and switch the extrusion position. Secondly, during the reset process, the guiding pin 29 moves in the straight groove 27 for reset. Therefore, after each extrusion is completed, the position of the extrusion screen 23 will change, and a new switch will occur during the next extrusion. This is beneficial to avoid the serious wear of the local position of the adsorbent and affecting the adsorption performance, and is beneficial to ensuring the service life of the adsorbent.

[0041] As a further embodiment of the present invention, the one-way limiting component includes an elastic guiding piece 31. The elastic guiding piece 31 is inclined and arranged inside the straight groove 27. The end of the elastic guiding piece 31 is fixed to the inner wall of the straight groove 27.

[0042] Specifically, during the movement of the extrusion mesh 23, it will drive the guiding pin 29 to contact the elastic guiding piece 31. Since the elastic guiding piece 31 is inclined, one end is fixed and the other end is in an active state. Under the push of the guiding pin 29, one end of the elastic guiding 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 guiding pin 29. And at this time, the elastic guiding piece 31 is in an inclined state and can guide the guiding pin 29 into the inclined groove 26, so that the guiding pin 29 can slide into the interior of the inclined groove 26. When the guiding pin 29 slides in the straight groove 27 towards the connection with the inclined groove 26, due to the inclined setting of the elastic guiding piece 31, when the guiding pin 29 contacts the elastic guiding piece 31, it will push the elastic guiding piece 31 to flip and displace until the guiding pin 29 passes through the elastic guiding piece 31, and then the elastic guiding piece 31 will reset to re-form the one-way limiting state, realizing the one-way limiting function.

[0043] As a further embodiment of the present invention, there is a gap 32 between the extrusion mesh 23 and the adsorbing member.

[0044] Specifically, if the extrusion mesh 23 directly adheres tightly to the adsorbing member, it will block some positions of the adsorbing member, 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 mesh 23 rotates in the early stage of movement, it does not contact the adsorbing member, which is also beneficial to switching the extrusion position in advance.

[0045] As a further embodiment of the present invention, a plurality of slag discharge grooves 33 are formed on the inner wall of the treatment pipe 6. The slag discharge grooves 33 are arranged at the outer wall edge position of the adsorbing member. A plurality of support blocks 34 are fixed on 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 a slag discharge channel 35 is formed between adjacent support blocks 34.

[0046] Specifically, during the filtration process, some large-particle impurities may accumulate on one side of the adsorbing member and it is difficult to pass through the adsorbing member even under extrusion. By setting the slag discharge grooves 33 in the present invention, the impurities can pass through the slag discharge grooves 33, thereby avoiding the accumulation of impurities.

[0047] As a further embodiment of the present invention, the adsorbing member includes a positioning ring 36. The positioning ring 36 is fixed on the filter screen 10. A plurality of arc-shaped 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-shaped strip 45. The edge of the sponge sheet 37 extends into the slag discharge groove 33. There is an adjustment through groove 38 between adjacent sponge sheets 37. A pushing assembly is arranged in the adjustment through groove 38, and the pushing assembly is used to push one side of the sponge sheet 37 to expose the slag discharge channel 35.

[0048] Specifically, by extending the sponge sheet 37 into the slag discharge groove 33, it can prevent gas from overflowing from the slag discharge groove 33, affecting the filtration effect. Thus, when not being squeezed, impurities are blocked on one side of the sponge sheet 37. When the sponge sheet 37 is squeezed, under the pushing action of the pushing component, it can push the sponge sheet 37 from the side, causing the sponge sheet 37 to be squeezed and contracted, and exposing the subsequent slag discharge channel 35. As a result, impurities can be discharged from the slag discharge channel 35. It can be seen that during filtration, the sponge sheet 37 can fill the slag discharge groove 33 to prevent gas from overflowing from this position and affecting the filtration effect. When squeezing and discharging impurities from the sponge sheet 37, the filling effect can be cancelled synchronously, enabling the slag discharge function of the slag discharge groove 33, which is not only convenient for discharging the accumulated impurities but also for discharging the impurities cleaned out from the sponge sheet 37 during the squeezing process.

[0049] As a further embodiment of the present invention, the pushing component includes a pushing sheet 39 and a fixing sheet 40. The pushing sheet 39 is arranged on one side of the sponge sheet 37, and the fixing sheet 40 is arranged on the other side of the sponge sheet 37. The pushing sheet 39 is rotatably connected to the positioning ring 36, the fixing sheet 40 is fixed to the sponge sheet 37, and an elastic telescopic rod 41 is fixed on the surface of the pushing sheet 39. The end of the elastic telescopic rod 41 is made of rubber material, and the surface of the elastic telescopic rod 41 is in contact with the surface of the extrusion mesh 23.

[0050] Specifically, since the extrusion mesh 23 rotates synchronously during the extrusion process, during the rotation, due to the end of the elastic telescopic rod 41 being made of rubber material with a large frictional force, it is in contact with the surface of the extrusion mesh 23. During the rotation of the extrusion mesh 23, under the frictional action, the elastic telescopic rod 41 moves along with the extrusion mesh 23, thereby driving the pushing sheet 39 to flip through the elastic telescopic rod 41, squeezing the sponge sheet 37 from the side and exposing the slag discharge channel 35, thus facilitating the discharge of the accumulated impurities. And as the distance between the extrusion mesh 23 and the sponge sheet 37 decreases, the elastic telescopic rod 41 can contract and give way to ensure the extrusion function of the extrusion mesh 23. Secondly, the thicknesses of the fixing sheet 40 and the pushing sheet 39 are less than the thickness of the sponge sheet 37 to avoid adversely affecting the extrusion function of the extrusion mesh 23.

[0051] As a further embodiment of the present invention, a partition plate 42 is fixed on the inner wall of the liquid storage cavity 2. The partition plate 42 is rotatably sleeved on the outside of the treatment pipe 6. The partition plate 42 divides the liquid storage cavity 2 into a clean water cavity 201 and a sewage cavity 202. A water inlet pipe 43 is fixedly communicated with the outer wall of the clean water cavity 201, and a drain pipe 44 is fixedly communicated with the outer wall of the sewage cavity 202.

[0052] Specifically, by separating clean water from sewage, it avoids the pollution of clean water caused by the discharged sewage, which is beneficial to improving the filtering effect. By connecting the water inlet pipe 43 to an externally provided clean water adding device, clean water can be continuously added into 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, or the drain pipe 44 can be connected to a sewage filter to filter the sewage for reuse.

[0053] The foregoing has shown and described 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 by the above embodiments, and what is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, various changes and improvements will occur to the present invention, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A ventilation and air exchange device for subway construction, comprising a housing (1). A liquid storage chamber (2), a suction air chamber (3), and an equipment chamber (4) are arranged inside the housing (1). A fan (5) is fixed inside the suction air chamber (3), and the suction end of the fan (5) is communicated with the inside of the liquid storage chamber (2). It is characterized in that, The interior of the liquid storage chamber (2) is filled with a treatment solution. A plurality of treatment tubes (6) are rotatably connected inside the liquid storage chamber (2). A driving member (7) is arranged in the device chamber (4), and the driving member (7) is used to drive the treatment tubes (6) to rotate; An air inlet (8) is formed in the outer wall of the housing (1). One end of the treatment tube (6) is communicated with the air inlet (8). A plurality of sewage discharge through grooves (9) are formed on the surface of the other end of the treatment tube (6). A plurality of filter meshes (10) are fixed inside the treatment tube (6), and an elastic adsorbing member is connected to the surface of the filter mesh (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 communicated with the inside of the treatment tube (6) through a pipeline (13), and the opening position of the pipeline (13) is arranged at the edge of the adsorbing member; An inclined surface (14) is arranged on the inner wall of the treatment tube (6). The lowest point of the inclined surface (14) is arranged at one end close to the sewage discharge through groove (9). An extrusion assembly is further arranged inside the treatment tube (6). During the rotation of the treatment tube (6), the extrusion assembly is used to extrude the adsorbing member; A partition plate (42) is fixed on the inner wall of the liquid storage chamber (2). The partition plate (42) is rotatably sleeved outside 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 communicated with the outer wall of the clean water chamber (201), and a drain pipe (44) is fixedly communicated with the outer wall of the sewage chamber (202); The extrusion assembly includes a sleeve (15). A movable rod (16) is inserted inside the sleeve (15), and an extrusion mesh (23) is arranged on the surface of the movable rod (16); A guiding cylinder (24) is fixed on the side of the filter mesh (10) close to the extrusion mesh (23). A second guiding groove (25) is formed in the guiding cylinder (24). The second guiding 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 formed in the middle of the extrusion mesh (23). The sliding hole (28) is slidably sleeved on the outer wall of the guiding cylinder (24). A guiding pin (29) is fixed on the inner wall of the surface of the sliding hole (28). The guiding pin (29) is inserted into the inside of the second guiding groove (25). A one-way limiting component is arranged at the communicating position of the straight groove (27) and the inclined groove (26). The one-way limiting component is used to limit the guiding pin (29) from moving into the straight groove (27). A sliding cylinder (30) is rotatably connected to the surface of the extrusion mesh (23), and the sliding cylinder (30) is slidably connected to the movable rod (16).

2. The ventilation and air exchange device for subway construction according to claim 1, wherein The sleeve (15) is fixed on the inner wall of the processing tube (6). A first spring (17) is fixed between the movable rod (16) and the sleeve (15). The movable rod (16) penetrates through the filter screen (10) and the adsorbent, and a guiding column (18) is fixed thereto. A plurality of bumps (19) are fixed on the surface of the guiding column (18). A first guiding groove (20) is provided between adjacent bumps (19). A bracket (21) is fixed on the inner wall of the air inlet (8). A pushing column (22) is fixed on the bracket (21). The pushing column (22) is inserted into the first guiding groove (20). The extrusion screen (23) is arranged on the side of the adsorbent away from the filter screen (10).

3. The ventilation and air exchange device for subway construction according to claim 2, wherein, The mesh number of the filter screen (10) is greater than that of the extrusion screen (23).

4. A ventilation and air exchange device for subway construction according to claim 1, characterized in that, The one-way limiting component includes an elastic guiding piece (31). The elastic guiding piece (31) is obliquely arranged inside the straight groove (27). The end of the elastic guiding piece (31) is fixed on the inner wall of the straight groove (27).

5. A ventilation device for subway construction according to claim 1, characterized in that, A gap (32) is provided between the extrusion screen (23) and the adsorbent.

6. The ventilation and air exchange device for subway construction according to claim 1, wherein, A plurality of slag discharge grooves (33) are formed on the inner wall of the processing tube (6). The slag discharge grooves (33) are arranged at the outer wall edge position of the adsorbent. A plurality of support blocks (34) are fixed on the outer wall edge of the filter screen (10). The support blocks (34) are fixed to the inner walls of the slag discharge grooves (33). A slag discharge channel (35) is formed between adjacent support blocks (34).

7. The ventilation and air exchange device for subway construction according to claim 6, characterized in that, The adsorbent includes a positioning ring (36) fixed on the filter screen (10). A plurality of arc-shaped 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-shaped strip (45). The edge of the sponge sheet (37) extends into the slag discharge groove (33). An adjustment through groove (38) is provided between adjacent sponge sheets (37). A pushing component is arranged in the adjustment through groove (38) and is used to push one side of the sponge sheet (37) to expose the slag discharge channel (35).

8. A ventilation and air exchange device for subway construction according to claim 7, characterized in that, The pushing component includes a pushing piece (39) and a fixing piece (40). The pushing piece (39) is arranged on one side of the sponge sheet (37). The fixing piece (40) is arranged on the other side of the sponge sheet (37). The pushing piece (39) is rotatably connected to the positioning ring (36). The fixing piece (40) is fixed to the sponge sheet (37). 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 material. The surface of the elastic telescopic rod (41) is in contact with the surface of the extrusion screen (23).

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