Ventilation device for underground space of pedestrian path

Abstract

The invention belongs to the technical field of ventilation devices, and particularly relates to a pedestrian path underground space ventilation device which comprises a ventilation pipeline, one end of the ventilation pipeline is rotationally connected with a first rotating clamp and a second rotating clamp, and the first rotating clamp and the second rotating clamp are symmetrically arranged. Inner cavities of the first rotating clamp and the second rotating clamp are rotationally connected with pneumatic balls, the first rotating clamp and the second rotating clamp form an annular clamp used for clamping and limiting the pneumatic balls, and a filter screen plate is installed in an inner cavity of the ventilation pipeline. The problems that when ventilation of the underground space of the pedestrian path is achieved through fan air supply, electric energy consumption is large, a large amount of dust and fluff are accumulated on the surface of a filter screen plate after the filter screen plate is used for a long time, the air supply efficiency is affected, and the ventilation effect is poor are solved. When the filter screen plate is replaced and cleaned by an operator, the ventilation device needs to be shut down, and a large amount of time needs to be wasted for cleaning work.

Description

Technical Field

[0001] The invention belongs to the technical field of ventilation devices, in particular to a ventilation device for underground spaces of pedestrian walkways. Background Art

[0002] Underground space refers to the space located below the ground, such as basements, underground passages, underground storage rooms, etc. Since the underground space is lower than the ground level, the ventilation conditions in the underground space are poor, and the underground space of the pedestrian walkway is a space specially for pedestrians to walk. Since the ventilation and regulation of the underground space of the pedestrian walkway are poor and pedestrians consume oxygen quickly, usually most underground spaces are equipped with exhaust fans or exhaust fans. The exhaust fans and exhaust fans are installed in the ventilation ducts to draw external air or draw the air in the underground space to discharge or discharge it, so that circulating air is formed in the underground space of the pedestrian walkway to ensure air circulation in the underground space.

[0003] A patent with publication number CN117868948A discloses a multifunctional protective device for subway station vents. The patent adopts a main frame with filters laid on the circumference to ensure the normal circulation of air. The rain filter assembly is arranged on the upper end of the main frame to effectively block the entry of mosquitoes, birds, dead branches and leaves, feces, and granular sand and gravel from the outside. The filter is provided with a guide tube layer, a first filter tube layer and a second filter tube layer, which can effectively prevent rainwater from entering the underground first floor of the subway station. It can also filter rainwater and air to ensure the cleanliness and hygiene of the underground first floor of the subway station. It can also save the subway company the installation investment of the air purification device and reduce the investment cost of the subway company.

[0004] There are still some problems in the actual application of the above scheme. Usually, a fan is used to draw external air into the ventilation duct, and the drawn air will be filtered through the filter plate and then discharged into the duct and sent to the underground space of the pedestrian walkway, so as to realize air circulation in the underground space. However, this ventilation device requires a motor to drive the fan blades to transport air to the underground space, which not only consumes a lot of electricity, but also filters the air through the filter plate. After long-term use, a lot of dust will accumulate on the surface of the filter plate, especially in summer when there is a lot of lint. The dust attached to the surface of the filter plate will affect the air supply efficiency. The operator needs to shut down the ventilation device to replace and clean the filter plate, which not only wastes a lot of time, but also makes the replacement operation cumbersome.

[0005] To this end, the present invention provides a ventilation device for the underground space of a pedestrian walkway. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a ventilation device for underground space of a pedestrian walkway described in the present invention comprises a ventilation duct, one end of the ventilation duct is rotatably connected with a first rotating clamp and a second rotating clamp, and the first rotating clamp and the second rotating clamp are symmetrically arranged with each other, a pneumatic ball is rotatably connected with the inner cavity of the first rotating clamp and the second rotating clamp, and the first rotating clamp and the second rotating clamp form an annular clamp for clamping a limited pneumatic ball, a filter screen is installed in the inner cavity of the ventilation duct, and a ventilation duct cleaning component is arranged in the inner cavity of the ventilation duct;

[0008] The ventilation duct cleaning assembly includes a cross fixing frame fixedly connected to the inner cavity of the pneumatic ball, a fixing column is fixedly connected to one end surface of the cross fixing frame, a rotating rod is fixedly connected to one end of the fixing column, a cleaning rod is arranged on one side of the rotating rod, and a plurality of brushes are evenly arranged on one side of the cleaning rod for brushing and collecting spider webs and dust on the surface of the filter screen;

[0009] One end of the ventilation duct is fixedly connected with a connecting seat for connecting and installing with the ventilation pipe in the underground space.

[0010] Preferably, a groove is provided on one side of the filter plate, a U-shaped collecting rack is installed in the inner cavity of the groove, a guide groove is provided on one side of the U-shaped collecting rack, two cleaning combs are symmetrically arranged on the inner wall of the guide groove, and the two cleaning combs are staggered and fixed to the inner wall of the guide groove, so as to brush the cleaning rod to collect spider webs and dust inside the cleaning rod and enter the guide groove.

[0011] Preferably, two guide blocks are installed on one side of the U-shaped collecting rack, and the two guide blocks are symmetrically installed on one side of the U-shaped collecting rack and staggered with each other. The guide block is located at one end of the inner cavity of the guide groove and is arranged in a semicircular arc shape to guide the rotation of the cleaning rod.

[0012] Preferably, a receiving groove is formed on one end face of the rotating rod, a tension spring is fixedly connected to the bottom of the inner cavity of the receiving groove, a T-shaped sliding column is fixedly connected to one end of the tension spring, and the T-shaped sliding column is slidably connected to the inside of the rotating rod and fixedly connected to the cleaning rod, so as to pull the cleaning rod to fit tightly with the filter screen.

[0013] Preferably, an air supply impeller is installed on the outside of the fixing column, and the air supply impeller is used to draw external air into the ventilation duct to perform air supply work.

[0014] Preferably, a screw rod is rotatably connected in the inner cavity of the U-shaped collecting frame, a rotating groove is arranged inside the upper end of the ventilation duct, one end of the screw rod passes through the ventilation duct and is fixedly connected to a driven bevel gear in the inner cavity of the rotating groove, and the driven bevel gear is meshingly connected to a transmission bevel gear.

[0015] Preferably, a transmission shaft is fixedly connected to the inside of the transmission bevel gear, one end of the transmission shaft passes through the ventilation duct and is fixedly connected to a driven pulley outside the inner cavity of the rotating groove, the driven pulley is externally connected to a belt, one end of the belt is connected to a transmission pulley, and the transmission pulley is fixedly installed on a fixed column.

[0016] Preferably, a dust recovery port is provided on the lower end surface of the ventilation duct, and the dust recovery port is communicated with the inner cavity of the guide groove; a collecting block is threadedly connected to the outside of the screw rod, and the collecting block is slidably connected in the inner cavity of the guide groove, for scraping off spider webs and dust collected in the inner cavity of the guide groove, and pushing the scraped spider webs and dust into the dust recovery port for collection; a tooth brush is provided on the outside of the collecting block, for brushing and cleaning the spider webs, dust and fluff on the outside of the comb.

[0017] Preferably, the inner walls of the first rotating clamp and the second rotating clamp are each provided with two annular grooves, and a plurality of rolling columns are rotatably connected to the inner cavities of the two annular grooves, so as to reduce the friction between the pneumatic ball and the first rotating clamp and the second rotating clamp, thereby improving the rotation efficiency of the pneumatic ball.

[0018] Preferably, a fastening bolt is connected to one side of the upper end surface of the first rotating clamp and the second rotating clamp through an internal thread, and the fastening bolt is fixed to the ventilation duct thread, which is used to quickly disassemble the pneumatic ball according to the air supply or exhaust of the ventilation duct, and change the opening direction of the pneumatic ball blades to achieve the air supply and exhaust effect of the ventilation duct.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. A ventilation device for underground space of a pedestrian walkway described in the present invention drives the fixed column to rotate, and drives the rotating rod to rotate, and drives the T-shaped sliding column to rotate synchronously, so that the cleaning rod can clean and collect the spider webs and dust on the surface of the filter screen plate, and after driving the cleaning rod to rotate in a circular shape by 180 degrees, the cleaning rod will rotate to the inner cavity of the U-shaped collecting frame, and then use the cleaning comb to brush the brush on one side of the cleaning rod to scrape off the spider webs, dust and fluff inside, and make the spider webs, dust and fluff scraped off by the brushing fall into the guide groove for collection, thereby solving the problem that after the existing ventilation device for underground space of a pedestrian walkway uses the cleaning rod to clean the spider webs, dust and fluff on the surface of the filter screen plate, if the spider webs, dust and fluff collected in the cleaning rod are not removed, during the long-term movement of the cleaning rod, as the spider webs, dust and fluff inside the cleaning rod accumulate, the cleaning rod will be unable to clean the filter screen plate, and the accumulation of spider webs, dust and fluff inside the cleaning rod will cause the filter screen plate mesh to be blocked, which is a more serious problem.

[0021] 2. The ventilation device for underground space of pedestrian walkway described in the present invention drives the fixed column to rotate, thereby driving the transmission pulley to rotate, and at the same time drives the belt to rotate, thereby driving the driven pulley to rotate, and driving the transmission shaft to rotate, and then driving the transmission bevel gear to rotate. During the rotation process, the transmission bevel gear will mesh with the transmission driven bevel gear to rotate, thereby driving the screw rod to rotate, and at the same time, the threaded transmission collection block slides in the inner cavity of the guide groove, and then the spider webs, dust and fluff on the outside of the cleaning comb are cleaned by the external tooth brush, and the inner cavity of the guide groove is also scraped. The sticky spider webs, dust and fluff in the air move downward and are pushed into the dust recovery port for collection and discharge, thereby solving the problem that after the existing ventilation device for underground space of sidewalk uses the cleaning rod to clean the spider webs, dust and fluff on the surface of the filter screen, if the spider webs, dust and fluff collected by the cleaning rod are not removed and discharged from the ventilation duct, the spider webs, dust and fluff will be accumulated in the ventilation duct. The long-term accumulation will still cause the filter screen to be blocked, affecting the ventilation effect of the underground space of the sidewalk. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] Figure 1 It is a schematic diagram of the structure of the main view of the present invention as a whole;

[0024] Figure 2 It is a schematic diagram of the structure of the present invention when viewed from above;

[0025] Figure 3 This is a schematic diagram of a semi-section structure of a pneumatic sphere of the present invention;

[0026] Figure 4 It is a schematic diagram of the overall structure of the screw rod installation of the present invention;

[0027] Figure 5 It is a schematic diagram of the overall structure of the cleaning rod installation of the present invention;

[0028] Figure 6 It is a schematic diagram of the inner cavity structure of the second rotating clamp of the present invention;

[0029] Figure 7 It is a schematic diagram of the overall structure of the U-shaped collecting rack of the present invention;

[0030] Figure 8 It is a schematic diagram of the overall structure of the filter screen plate of the present invention;

[0031] Fig. 9 This is a schematic diagram of the internal structure of a half-section of a ventilation duct according to the present invention;

[0032] In the figure: 1. ventilation duct; 2. first rotating clamp; 3. second rotating clamp; 4. pneumatic ball; 5. connecting seat; 6. dust recovery port; 7. cross fixing frame; 8. fixing column; 9. driving pulley; 10. rotating rod; 11. T-shaped sliding column; 12. tension spring; 13. storage groove; 14. cleaning rod; 15. driven pulley; 16. transmission shaft; 17. driving bevel gear; 18. driven bevel gear; 19. screw rod; 20. collecting block; 21. rotating groove; 22. filter screen; 23. groove; 24. U-shaped collecting frame; 25. guide block; 26. cleaning comb; 27. guide groove; 28. annular groove; 29. ​​rolling column; 30. fastening bolt; 31. air supply impeller; 32. belt. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0034] Embodiment 1

[0035] like Figures 1 to 9 As shown, a ventilation device for underground space of a pedestrian walkway described in an embodiment of the present invention comprises a ventilation duct 1, one end of the ventilation duct 1 is rotatably connected with a first rotating clamp 2 and a second rotating clamp 3, and the first rotating clamp 2 and the second rotating clamp 3 are symmetrically arranged with each other, the inner cavities of the first rotating clamp 2 and the second rotating clamp 3 are rotatably connected with a pneumatic ball 4, and the first rotating clamp 2 and the second rotating clamp 3 form an annular clamp for clamping the limited pneumatic ball 4, the inner cavity of the ventilation duct 1 is installed with a filter screen plate 22, and the inner cavity of the ventilation duct 1 is provided with a ventilation duct cleaning component;

[0036] The ventilation duct cleaning assembly includes a cross fixing frame 7 fixedly connected to the inner cavity of the pneumatic ball 4, a fixing column 8 is fixedly connected to one end surface of the cross fixing frame 7, a rotating rod 10 is fixedly connected to one end of the fixing column 8, a cleaning rod 14 is arranged on one side of the rotating rod 10, and a plurality of brushes are evenly arranged on one side of the cleaning rod 14 for brushing and collecting spider webs and dust on the surface of the filter screen plate 22;

[0037] A connecting seat 5 is fixedly connected to one end of the ventilation duct 1 for connecting and installing with the ventilation pipe in the underground space.

[0038] Specifically, in the prior art, a motor is usually used to drive the fan blades to draw the external air into the ventilation duct, and the drawn air will be filtered through the filter screen and then discharged into the duct, and then sent to the underground space of the pedestrian walkway, and the air in the inner cavity of the underground space of the pedestrian walkway will be discharged through the inlet and outlet, so as to realize the ventilation of the entire underground space of the pedestrian walkway. However, this ventilation device not only consumes a lot of electric energy, but also filters the air through the filter screen and then discharges it into the underground space of the pedestrian walkway. After long-term use, a lot of dust will accumulate on the surface of the filter screen, especially in summer when there is a lot of lint, which will affect the efficiency of air supply when attached to the surface of the filter screen. When the operator replaces and cleans the filter screen, the ventilation device needs to be shut down, which not only wastes a lot of time, but also the replacement operation is cumbersome.

[0039] The present invention uses a connecting seat 5 to connect and install the ventilation duct 1 with the air duct of the underground space of the pedestrian walkway, then installs the pneumatic ball 4 in the inner cavity of the first rotating clamp 2 and the second rotating clamp 3, and rotates the first rotating clamp 2 and the second rotating clamp 3 to clamp and limit the pneumatic ball 4, and at the same time, the fixing column 8 and the cross fixing frame 7 are installed and fixed, and then in the process of external air driving the pneumatic ball 4 to rotate, the pneumatic ball 4 is used to drive the cross fixing frame 7 to rotate, and the cross fixing frame 7 drives the fixing column 8 to rotate, and drives the rotating rod 10 to rotate, and the rotating rod 10 drives the cleaning rod 14 to rotate during the rotation process. Since a plurality of brushes are evenly arranged on one side of the cleaning rod 14, the spider webs and dust on the surface of the filter screen plate 22 are cleaned and collected during the rotation process of the cleaning rod 14, so as to prevent the ventilation device from being used for a long time, and the spider webs and dust will be accumulated on the surface of the filter screen plate 22, affecting the efficiency of air supply, causing the underground space of the pedestrian walkway to be ventilated unsmoothly, thereby solving the above-mentioned problem.

[0040] like Figure 3 , Figures 7 to 9 As shown, a groove 23 is provided on one side of the filter plate 22, a U-shaped collecting frame 24 is installed in the inner cavity of the groove 23, a guide groove 27 is provided on one side of the U-shaped collecting frame 24, two cleaning combs 26 are symmetrically arranged on the inner wall of the guide groove 27, and the two cleaning combs 26 are staggered and fixed to the inner wall of the guide groove 27, and are used to brush the cleaning rod 14 to collect spider webs and dust inside it into the guide groove 27.

[0041] like Figure 3 , Figures 7 to 9 As shown, two guide blocks 25 are installed on one side of the U-shaped collecting frame 24, and the two guide blocks 25 are symmetrically installed on one side of the U-shaped collecting frame 24 and staggered with each other. The guide block 25 is located at one end of the inner cavity of the guide groove 27 and is arranged in a semicircular arc shape for guiding the rotation of the cleaning rod 14.

[0042] like Figures 2 to 5 and Fig. 9 As shown, a receiving groove 13 is provided on one end face of the rotating rod 10, a tension spring 12 is fixedly connected to the bottom of the inner cavity of the receiving groove 13, a T-shaped slide column 11 is fixedly connected to one end of the tension spring 12, and the T-shaped slide column 11 is slidably connected to the inside of the rotating rod 10 and fixedly connected to the cleaning rod 14, so as to pull the cleaning rod 14 to fit tightly with the filter screen plate 22.

[0043] Specifically, when the underground space of the pedestrian walkway is ventilated, the fixed column 8 is driven to rotate, and the fixed column 8 drives the rotating rod 10 to rotate, and the T-shaped sliding column 11 is driven to rotate synchronously. During the rotation of the fixed column 8, the tension spring 12 is used to pull the T-shaped sliding column 11 to move into the inner cavity of the storage groove 13, and the T-shaped sliding column 11 pushes the cleaning rod 14 to fit closely with the surface of the filter screen plate 22, so that the cleaning rod 14 can clean and collect spider webs and dust on the surface of the filter screen plate 22. After the cleaning rod 14 is driven to rotate 180 degrees in a circular shape, the cleaning rod 14 will rotate into the inner cavity of the U-shaped collection frame 24, and the tension spring 12 will pull the T-shaped sliding column 11, and the T-shaped sliding column 11 will push the cleaning rod 14 to fit closely with the cleaning comb 26. Then, as the cleaning rod 14 is continuously driven to rotate, the cleaning comb 26 is used to brush the brush on one side of the cleaning rod 14 to scrape off the spider webs, dust and fluff inside, and the spiders scraped off by the brushing will be removed. The spider webs, dust and fluff fall into the guide groove 27, and then as the cleaning rod 14 is continuously driven to rotate, the cleaning rod 14 will contact the guide block 25, and one end of the guide block 25 is arranged in a semicircular arc shape, so that the guide block 25 pushes the cleaning rod 14 to move toward the rotating rod 10. At the same time, the cleaning rod 14 pushes the T-shaped slide column 11 to slide inside the rotating rod 10, and pulls the tension spring 12 to expand and move out of the guide groove 27, thereby solving the problem that after the existing pedestrian walkway underground space ventilation device uses the cleaning rod to clean the spider webs, dust and fluff on the surface of the filter screen plate, if the spider webs, dust and fluff collected in the cleaning rod are not removed, during the long-term movement of the cleaning rod, as the spider webs, dust and fluff inside the cleaning rod accumulate, the cleaning rod will not be able to clean the filter screen plate, and the accumulation of spider webs, dust and fluff inside the cleaning rod will cause the filter screen plate mesh to be blocked, which is a more serious problem.

[0044] like Figure 4 and Figure 5 As shown, an air supply impeller 31 is installed outside the fixing column 8, and the air supply impeller 31 is used to draw external air into the ventilation duct 1 to perform air supply work.

[0045] like Figure 4 , Figures 7 to 9As shown, a screw rod 19 is rotatably connected in the inner cavity of the U-shaped collecting frame 24, a rotating groove 21 is provided inside the upper end of the ventilation duct 1, one end of the screw rod 19 passes through the ventilation duct 1 and is fixedly connected to the inner cavity of the rotating groove 21, and the driven bevel gear 18 is meshedly connected to the transmission bevel gear 17.

[0046] like Figure 3 , Figures 7 to 9 As shown, a transmission shaft 16 is fixedly connected to the inside of the transmission bevel gear 17, one end of the transmission shaft 16 passes through the ventilation duct 1 and is located outside the inner cavity of the rotating groove 21 and is fixedly connected to a driven pulley 15, the driven pulley 15 is externally connected to a belt 32, one end of the belt 32 is connected to a transmission pulley 9, and the transmission pulley 9 is fixedly installed on the fixed column 8.

[0047] Specifically, when the pneumatic ball 4 is driven by air to rotate, the pneumatic ball 4 will drive the cross fixing frame 7 to rotate, and at the same time drive the fixing column 8 to rotate, and then drive the transmission pulley 9 to rotate, and at the same time the transmission pulley 9 drives the belt 32 to rotate, and then drives the driven pulley 9 to rotate, and the driven pulley 9 will drive the transmission shaft 16 to rotate during the rotation process, and drive the transmission bevel gear 17 to rotate, and the transmission bevel gear 17 will mesh with the transmission driven bevel gear 18 to rotate during the rotation process, and then drive the screw rod 19 to rotate, and the screw rod 19 will drive the collecting block 20 to slide in the inner cavity of the guide groove 27 during the sliding process of the collecting block 20 in the inner cavity of the guide groove 27, and the external gear will be used to rotate the collecting block 20. The brush cleans the spider webs, dust and fluff on the outside of the cleaning comb 26, and also scrapes the sticky spider webs, dust and fluff in the inner cavity of the guide groove 27 downward, and then pushes the spider webs, dust and fluff into the dust recovery port 6 for collection and discharge, thereby solving the problem that after the existing ventilation device for underground space of the sidewalk uses the cleaning rod to clean the spider webs, dust and fluff on the surface of the filter screen, if the spider webs, dust and fluff collected by the cleaning rod are not cleared and discharged from the ventilation duct, the spider webs, dust and fluff will be caused to gather in the ventilation duct, and the long-term accumulation will still cause the filter screen to be blocked, affecting the ventilation effect of the underground space of the sidewalk.

[0048] Embodiment 2

[0049] like Figure 3 , Figures 7 to 9As shown, a dust recovery port 6 is provided on the lower end face of the ventilation duct 1, and the dust recovery port 6 is communicated with the inner cavity of the guide groove 27, the external threaded connection of the screw rod 19 is provided with a collecting block 20, and the collecting block 20 is slidably connected in the inner cavity of the guide groove 27, and is used to scrape off the spider webs and dust collected in the inner cavity of the guide groove 27, and push the scraped spider webs and dust into the dust recovery port 6 for collection, and a tooth brush is provided on the outside of the collecting block 20, which is used to brush and clean the spider webs, dust and fluff on the outside of the comb 26.

[0050] like Figure 1 , Figure 3 and Figure 6 As shown, two annular grooves 28 are provided on the inner walls of the first rotating clamp 2 and the second rotating clamp 3, and a plurality of rolling columns 29 are rotatably connected to the inner cavities of the two annular grooves 28, so as to reduce the friction between the pneumatic ball 4 and the first rotating clamp 2 and the second rotating clamp 3, and improve the rotation efficiency of the pneumatic ball 4.

[0051] like Figures 1 to 3 and Figure 6 As shown, a fastening bolt 30 is connected to one side of the upper end surface of the first rotating clamp 2 and the second rotating clamp 3 by an internal thread, and the fastening bolt 30 is threadedly connected and fixed to the ventilation duct 1, so as to be used for quickly disassembling the pneumatic ball 4 according to the air supply or exhaust of the ventilation duct 1, and changing the opening direction of the blades of the pneumatic ball 4, so as to achieve the air supply and exhaust effect of the ventilation duct 1.

[0052] Specifically, when the pneumatic ball 4 needs to be replaced, the first rotating clamp 2 and the second rotating clamp 3 are removed by twisting the fastening bolt 30, and then the first rotating clamp 2 and the second rotating clamp 3 are rotated to open, so as to facilitate the removal of the pneumatic ball 4, and then the cross fixing frame 7 and the fixing column 8 are disassembled, so as to facilitate the replacement of the pneumatic ball 4 of the size according to the ventilation requirements, so as to increase the power of the pneumatic ball 4. After replacing the pneumatic ball 4, the first rotating clamp 2 and the second rotating clamp 3 are rotated to drive the rolling column 29 to clamp the pneumatic ball 4, and the fastening bolt 30 is used to fix the first rotating clamp 2 and the second rotating clamp 3, so as to improve the rotation efficiency of the pneumatic ball 4.

[0053] The working principle is to connect and install the ventilation duct 1 with the air duct of the underground space of the pedestrian walkway by using the connecting seat 5, and then install the pneumatic ball 4 in the inner cavity of the first rotating clamp 2 and the second rotating clamp 3, and rotate the first rotating clamp 2 and the second rotating clamp 3 to clamp and limit the pneumatic ball 4, and at the same time, install and fix the fixing column 8 and the cross fixing frame 7, and then when the external air drives the pneumatic ball 4 to rotate, the pneumatic ball 4 is used to drive the cross fixing frame 7 to rotate, and at the same time, the cross fixing frame 7 drives the fixing column 8 to rotate, and drives the rotating rod 10 to rotate, and the rotating rod 10 drives the cleaning rod 14 to rotate during the rotation process. Since a number of brushes are evenly arranged on one side of the cleaning rod 14, the spider webs and dust on the surface of the filter screen plate 22 will be cleaned and collected during the rotation of the cleaning rod 14, so as to prevent the ventilation device from being used for a long time, and the spider webs and dust will be accumulated on the surface of the filter screen plate 22, affecting the efficiency of air supply, causing the underground space of the pedestrian walkway to be ventilated unsmoothly;

[0054] When the underground space of the pedestrian walkway is ventilated, the fixed column 8 is driven to rotate, and the fixed column 8 drives the rotating rod 10 to rotate, and the T-shaped sliding column 11 is driven to rotate synchronously. During the rotation of the fixed column 8, the tension spring 12 is used to pull the T-shaped sliding column 11 to move into the inner cavity of the storage groove 13, and the T-shaped sliding column 11 pushes the cleaning rod 14 to fit closely with the surface of the filter screen plate 22, so that the cleaning rod 14 can clean and collect spider webs and dust on the surface of the filter screen plate 22. After the cleaning rod 14 is driven to rotate 180 degrees in a circular shape, the cleaning rod 14 will rotate to the inner cavity of the U-shaped collection frame 24, and the tension spring 12 will be used to pull the T-shaped sliding column 11, so that the T-shaped sliding column 1 1. The cleaning rod 14 is pushed to fit closely with the cleaning comb 26. Then, as the cleaning rod 14 is continuously driven to rotate, the cleaning comb 26 is used to brush the brush on one side of the cleaning rod 14 to remove the spider webs, dust and fluff inside, and the spider webs, dust and fluff removed by the brushing fall into the guide groove 27. Then, as the cleaning rod 14 is continuously driven to rotate, the cleaning rod 14 contacts the guide block 25, and one end of the guide block 25 is arranged in a semicircular arc shape, so that the guide block 25 pushes the cleaning rod 14 to move toward the rotating rod 10. At the same time, the cleaning rod 14 pushes the T-shaped slide column 11 to slide inside the rotating rod 10, and pulls the tension spring 12 to expand and move out of the guide groove 27.

[0055] In the process of using air to drive the pneumatic ball 4 to rotate, the pneumatic ball 4 will drive the cross fixing frame 7 to rotate, and at the same time drive the fixing column 8 to rotate, and then drive the transmission pulley 9 to rotate, and at the same time the transmission pulley 9 drives the belt 32 to rotate, and then drives the driven pulley 9 to rotate, and in the process of rotation, the driven pulley 9 will drive the transmission shaft 16 to rotate, and drive the transmission bevel gear 17 to rotate, and in the process of rotation, the transmission bevel gear 17 will mesh with the transmission driven bevel gear 18 to rotate, and then drive the screw rod 19 to rotate, and in the process of rotation, the screw rod 19 will drive the collecting block 20 to slide in the inner cavity of the guide groove 27, and in the process of sliding of the collecting block 20 in the inner cavity of the guide groove 27, the external tooth brush will be used to clean the spider webs, dust and fluff on the outside of the cleaning comb 26, and at the same time, the spider webs, dust and fluff stuck in the inner cavity of the guide groove 27 will be scraped off and moved downward, and then the spider webs, dust and fluff will be pushed into the dust recovery port 6 for collection and discharge.

[0056] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A ventilation device for underground space of a pedestrian walkway, characterized in that: The invention comprises a ventilation duct (1), one end of which is rotatably connected to a first rotating clamp (2) and a second rotating clamp (3), and the first rotating clamp (2) and the second rotating clamp (3) are symmetrically arranged with each other, the inner cavities of the first rotating clamp (2) and the second rotating clamp (3) are rotatably connected to a pneumatic ball (4), and the first rotating clamp (2) and the second rotating clamp (3) form an annular clamp for clamping a limited pneumatic ball (4), the inner cavity of the ventilation duct (1) is provided with a filter screen (22), and the inner cavity of the ventilation duct (1) is provided with a ventilation duct cleaning component; The ventilation duct cleaning assembly comprises a cross fixing frame (7) fixedly connected to the inner cavity of the pneumatic ball (4), a fixing column (8) fixedly connected to one end surface of the cross fixing frame (7), a rotating rod (10) fixedly connected to one end of the fixing column (8), a cleaning rod (14) arranged on one side of the rotating rod (10), and a plurality of brushes evenly arranged on one side of the cleaning rod (14) for brushing and collecting spider webs and dust on the surface of the filter screen plate (22); One end of the ventilation duct (1) is fixedly connected with a connecting seat (5) for connecting and installing with a ventilation pipe in an underground space.

2. A ventilation device for underground space of a pedestrian walkway according to claim 1, characterized in that: A groove (23) is provided on one side of the filter screen plate (22), a U-shaped collecting frame (24) is installed in the inner cavity of the groove (23), a guide groove (27) is provided on one side of the U-shaped collecting frame (24), two cleaning combs (26) are symmetrically arranged on the inner wall of the guide groove (27), and the two cleaning combs (26) are staggered and fixedly connected to the inner wall of the guide groove (27) for brushing the cleaning rod (14) to collect spider webs and dust inside the cleaning rod (14) and enter the guide groove (27).

3. The ventilation device for underground space of a pedestrian walkway according to claim 2, characterized in that: Two guide blocks (25) are installed on one side of the U-shaped collecting frame (24), and the two guide blocks (25) are symmetrically installed on one side of the U-shaped collecting frame (24) and are arranged to be staggered with each other. The guide block (25) is located at one end of the inner cavity of the guide groove (27) and is arranged in a semicircular arc shape for guiding the rotation of the cleaning rod (14).

4. The ventilation device for underground space of a pedestrian walkway according to claim 1, characterized in that: A receiving groove (13) is formed on one end surface of the rotating rod (10), a tension spring (12) is fixedly connected to the bottom of the inner cavity of the receiving groove (13), one end of the tension spring (12) is fixedly connected to a T-shaped sliding column (11), and the T-shaped sliding column (11) is slidably connected to the inside of the rotating rod (10) and is fixedly connected to the cleaning rod (14) for pulling the cleaning rod (14) and tightly fitting with the filter screen plate (22).

5. The ventilation device for underground space of a pedestrian walkway according to claim 1, characterized in that: An air supply impeller (31) is installed outside the fixed column (8), and the air supply impeller (31) is used to draw external air into the ventilation duct (1) to perform air supply work.

6. The ventilation device for underground space of a pedestrian walkway according to claim 3, characterized in that: A screw rod (19) is rotatably connected in the inner cavity of the U-shaped collecting frame (24); a rotation groove (21) is provided inside the upper end of the ventilation duct (1); one end of the screw rod (19) passes through the ventilation duct (1) and is fixedly connected to a driven bevel gear (18) located in the inner cavity of the rotation groove (21); the driven bevel gear (18) is meshingly connected to a transmission bevel gear (17).

7. The ventilation device for underground space of a pedestrian walkway according to claim 6, characterized in that: The transmission bevel gear (17) is fixedly connected to a transmission shaft (16) inside, one end of the transmission shaft (16) passes through the ventilation duct (1) and is located outside the inner cavity of the rotating groove (21) and is fixedly connected to a driven pulley (15), the driven pulley (15) is externally connected to a belt (32), one end of the belt (32) is connected to a transmission pulley (9), and the transmission pulley (9) is fixedly installed on the fixed column (8).

8. The ventilation device for underground space of a pedestrian walkway according to claim 6, characterized in that: The lower end surface of the ventilation duct (1) is provided with a dust recovery port (6), and the dust recovery port (6) is communicated with the inner cavity of the guide groove (27); the outer surface of the screw rod (19) is threadedly connected with a collecting block (20), and the collecting block (20) is slidably connected in the inner cavity of the guide groove (27) and is used to scrape away spider webs and dust collected in the inner cavity of the guide groove (27), and push the scraped spider webs and dust into the dust recovery port (6) for collection; the outer surface of the collecting block (20) is provided with a tooth brush, which is used to brush away spider webs, dust and fluff on the outer surface of the comb (26).

9. The ventilation device for underground space of a pedestrian walkway according to claim 1, characterized in that: The inner walls of the first rotating clamp (2) and the second rotating clamp (3) are each provided with two annular grooves (28), and the inner cavities of the two annular grooves (28) are rotatably connected with a plurality of rolling columns (29) for reducing the friction between the pneumatic ball (4) and the first rotating clamp (2) and the second rotating clamp (3), thereby improving the rotation efficiency of the pneumatic ball (4).

10. The ventilation device for underground space of a pedestrian walkway according to claim 9, characterized in that: A fastening bolt (30) is internally threadedly connected to one side of the upper end surface of the first rotating clamp (2) and the second rotating clamp (3), and the fastening bolt (30) is threadedly connected and fixed to the ventilation duct (1), and is used to quickly disassemble the pneumatic ball (4) according to the air supply or exhaust of the ventilation duct (1), and to change the opening direction of the blades of the pneumatic ball (4), so as to achieve the air supply and exhaust effect of the ventilation duct (1).

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