A laboratory gas supply purification system

Abstract

The present application discloses a laboratory air supply and purification system, which includes a laboratory wall body. An air inlet passage is provided on the laboratory wall body. An air inlet device is arranged at the air inlet of the air inlet passage. A filter frame adapted to the air inlet passage is slidably arranged in the air inlet passage. Multiple filter plates for filtering air are arranged on the filter frame. Each filter plate is uniformly arranged along the radial direction of the filter frame. A plurality of mounting frames are fixedly arranged on the filter frame corresponding to each filter plate. A quick-release connection mechanism is arranged between the filter frame and the filter plates. The quick-release connection mechanism includes a connection component for connecting the filter plates and the filter frame and a positioning component for fixing the filter plates on the filter frame. The structure of the present application is reasonable, and the present application has the effect of ensuring the air filtration effect.

Description

Technical Field

[0001] This application relates to the field of laboratory equipment, and particularly to a laboratory air supply purification system. Background Art

[0002] A laboratory is a place for experiments. It is the cradle of science, the base for scientific research, and the source of technological development, playing a very important role in the development of science and technology. Generally, the environmental requirements of a laboratory are relatively high. However, the air in the laboratory must inevitably exchange with the outside air. In addition to bringing the required oxygen to the people in the laboratory, the outside air will also bring substances such as bacteria and dust in the outside air into the laboratory. The entry of substances such as bacteria and dust into the laboratory will inevitably affect the experimental environment of the experimenters in the laboratory, thereby affecting the accuracy of the experimental data obtained from the experiment.

[0003] In the prior art, an air filtration mechanism is usually provided on the air inlet passage of the laboratory to purify and filter the air entering the laboratory, reduce the content of dust and bacteria in the air entering the laboratory, and thus reduce the influence of external factors on the experiment. However, most of the air filtration mechanisms are not easy to disassemble and replace, and the air filtration effect of the air filtration mechanism will be affected after long-term use. Summary of the Invention

[0004] In order to ensure the air filtration effect, this application provides a laboratory air supply purification system.

[0005] A laboratory air supply purification system provided by this application adopts the following technical solutions:

[0006] A laboratory air supply purification system includes a laboratory wall body. An air inlet passage is opened on the laboratory wall body. An air inlet is provided at the air inlet of the air inlet passage. A filter frame adapted to the air inlet passage is slidably arranged in the air inlet passage. A plurality of filter plates for filtering air are arranged on the filter frame. Each of the filter plates is uniformly arranged along the radial direction of the filter frame. A plurality of mounting frames are fixedly arranged on the filter frame corresponding to each of the filter plates. A quick-release connection mechanism is arranged between the filter frame and the filter plates. The quick-release connection mechanism includes a connection component for connecting the filter plates and the filter frame and a positioning component for fixing the filter plates on the filter frame.

[0007] By adopting the above technical solutions, a plurality of filter plates are arranged in the air inlet passage of the laboratory to filter the air transported from the outside into the laboratory, reduce the content of dust and bacteria in the air entering the laboratory, and reduce the influence of external factors on the experiment. A quick-release connection mechanism is arranged between the filter frame and the filter plates, which facilitates the user to quickly disassemble the filter plates from the filter frame for replacement, thereby achieving the purpose of ensuring the air filtration effect.

[0008] Optionally, positioning holes are formed in the mounting frame. The connecting component includes a fixing rod with a diameter adapted to the positioning holes and a movable rod with a diameter larger than the aperture of the positioning holes. A plurality of through holes are uniformly formed in the filter plate. Fixing blocks are fixedly arranged in each of the through holes. Springs adapted to the through holes are further arranged in each of the through holes. The fixing rod penetrates through the movable rod along the radial direction of the movable rod. The fixing rod is slidably connected to the movable rod. The movable rod is slidably arranged in the through hole. The spring is sleeved on the fixing rod. One end of the spring is fixedly connected to the fixing block. The other end of the spring is fixedly connected to one end of the movable rod close to the fixing block. One end of the fixing rod is fixedly connected to the fixing block. The other end of the fixing rod extends out of the through hole. The end of the movable rod away from the fixing block extends out of the through hole.

[0009] By adopting the above technical solution, the movable rod abuts against the mounting frame, the spring is compressed, and the fixing rod extends into the positioning hole to complete the connection between the filter plate and the filter frame.

[0010] Optionally, the positioning component includes a positioning slider and a torsion spring. The positioning slider is fixedly arranged on the side wall of the fixing rod. The fixing rod is divided into two fixed sub-rods. The torsion spring is arranged at the connection of the two fixed sub-rods. Two ends of the torsion spring are respectively fixedly connected to one ends of the two fixed sub-rods. Two rotating inclined grooves adapted to the positioning slider are formed on the inner walls of two opposite sides of the positioning hole. The rotation directions of the two rotating inclined grooves are opposite. A positioning card slot is formed on the surface of the mounting frame away from the filter plate. Two positioning card slots corresponding to the rotating inclined grooves are formed. The two positioning card slots are respectively communicated with the two rotating inclined grooves.

[0011] By adopting the above technical solution, the positioning slider enters one end of a rotating inclined groove and slides in the rotating inclined groove. During the sliding process of the positioning slider in the rotating inclined groove, the fixed sub-rod away from the fixing block rotates, and the torsion spring twists accordingly. The positioning slider slides out from the other end of the rotating inclined groove. At this time, the torsion spring changes to the reset state, and the spring changes from the compressed state to the reset state. The positioning slider enters the positioning card slot to realize the fixation between the filter plate and the filter frame. When the filter plate needs to be replaced, press the filter plate to make the positioning slider leave the positioning card slot. The spring is compressed, the torsion spring continues to reset, the positioning slider enters the rotating inclined groove. During the sliding process of the positioning slider in the rotating inclined groove, the torsion spring first resets and then twists in the opposite direction. The spring gradually resets from the compressed state. Finally, the positioning slider slides out from the notch of the rotating inclined groove to realize the separation between the filter plate and the filter frame and complete the disassembly.

[0012] Optionally, multiple groups of quick-release connection mechanisms are arranged between the filter plate and the filter frame. Each group of quick-release connection mechanisms is evenly and equidistantly arranged between the filter plate and the filter frame.

[0013] By adopting the above technical solution, a plurality of quick connection mechanisms are arranged between the filter plate and the filter frame to ensure the stability of the filter plate when installed on the filter frame.

[0014] Optionally, a plurality of opening and closing fan blades for opening and closing the air inlet passage are arranged between the air inlet and the filter frame. A fan blade groove is provided in the air inlet passage corresponding to the opening and closing fan blades. A second mounting ring is fixedly arranged in the air inlet passage. A first mounting ring is rotatably arranged in the air inlet passage. The opening and closing fan blades are arranged between the first mounting ring and the second mounting ring. A plurality of connecting bolts are inserted through the second mounting ring. Each of the connecting bolts is rotatably connected to the second mounting ring. A plurality of connecting grooves are provided in the first mounting ring corresponding to the connecting bolts. Each of the connecting bolts penetrates through the second mounting ring and the opening and closing fan blades and extends into the connecting grooves. The connecting bolts are fixedly connected to the opening and closing fan blades. An opening and closing gear is fixedly arranged on the side wall of each of the connecting bolts. Teeth meshing with the opening and closing gears are provided on the bottom wall of each of the connecting grooves. A driving assembly for driving the opening and closing of the opening and closing fan blades is arranged in the air inlet passage.

[0015] By adopting the above technical solution, opening and closing blades are arranged in the air inlet passage. When necessary, the user can drive the driving assembly to close the opening and closing blades, close the air inlet passage, and isolate it from the outside world, further reducing the influence of external factors on the experiment.

[0016] Optionally, the driving assembly includes an opening and closing rod and a moving rack arranged on the side wall of the opening and closing rod. A plurality of the moving racks are arranged on the side wall of the opening and closing rod. Each of the moving racks is uniformly arranged along the circumferential direction of the opening and closing rod. An opening and closing groove for installing the opening and closing rod is further provided on the laboratory wall. The opening and closing rod is rotatably arranged in the opening and closing groove. The opening and closing groove communicates with the air inlet passage. A rotating tooth meshing with each of the moving racks is arranged on the side wall of the first mounting ring. A limiting groove adapted to the connecting groove is provided on the inner wall of the opening and closing groove. A limiting plate is arranged in the limiting groove. The limiting plate is fixedly arranged on the side wall of the end of the opening and closing rod close to the first mounting ring.

[0017] By adopting the above technical solution, the moving rack and the rotating tooth are meshed. When the opening and closing rod rotates in the opening and closing groove, the first mounting ring rotates accordingly. A limiting groove adapted to the connecting groove is further provided in the opening and closing groove. A limiting plate is arranged on the side wall of the end of the opening and closing rod close to the first mounting ring and the limiting plate is arranged in the limiting groove. When the opening and closing rod rotates until the limiting plate abuts against one inner wall of the limiting groove, the opening and closing fan blades are in the open or closed state. When the opening and closing rod rotates reversely until the limiting plate abuts against the opposite inner wall of the limiting groove, the opening and closing fan blades are in the closed or open state. The user can rotate the opening and closing rod to open or close the opening and closing fan blades according to different situations.

[0018] Optionally, a flow guide frame is further provided at the air outlet of the air inlet passage. A plurality of flow guide plates for guiding the wind direction are provided on the flow guide frame. Fixing bolts for fixing the flow guide frame to the laboratory wall are provided on the flow guide frame, and a plurality of the fixing bolts are provided on the flow guide frame.

[0019] By adopting the above technical solution, a flow guide frame is provided at the air outlet of the air inlet passage, and a plurality of flow guide plates are provided on the flow guide frame, which is convenient for the user to adjust the air outlet angle.

[0020] Optionally, an elastic gasket is provided between one of the fixing bolts and the flow guide frame. The elastic gasket is fixed on the surface of the flow guide frame away from the air inlet passage. The fixing bolt includes a threaded portion and a smooth portion. A threaded hole adapted to the threaded portion is provided on the end surface of the closing and opening rod near the flow guide frame, and the smooth portion is rotatably connected to the flow guide frame.

[0021] By adopting the above technical solution, when the fixing bolt fixes the flow guide frame to the laboratory wall, the threaded portion of the fixing bolt penetrates through the flow guide frame and extends into the threaded hole to be connected with the closing and opening rod. At this time, the smooth portion is rotatably connected to the flow guide frame, and the user can control the opening and closing of the closing and opening fan blades by controlling the rotation of the fixing bolt.

[0022] Optionally, a rotating handle is provided at one end of the fixing bolt away from the closing and opening rod.

[0023] By adopting the above technical solution, a rotating handle is provided on the fixing bolt, which is convenient for the user to rotate the fixing bolt.

[0024] Optionally, a lifting rod for facilitating the extraction of the filter frame from the air inlet passage is fixedly provided at one end of the filter frame away from the air inlet device. A lifting groove adapted to the lifting rod is provided on the flow guide frame. The flow guide frame is divided into two flow guide sub-frames along the lifting groove, and each of the flow guide plates is respectively arranged in the two flow guide sub-frames. Adjustment grooves adapted to the rotating shafts of the flow guide plates are provided on the side wall of the lifting rod.

[0025] By adopting the above technical solution, a lifting rod is provided on the filter frame, which is convenient for the user to take out the filter frame from the air inlet passage to replace the filter plate.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. Multiple filter plates are arranged in the air inlet passage of the laboratory to filter the air transported from the outside into the laboratory. The movable rod on the filter plate is abutted against the mounting frame, the spring is compressed, and the fixed rod extends into the positioning hole to complete the connection between the filter plate and the filter frame. The positioning slider enters the rotating chute from one end of the rotating chute. During the process of the positioning slider sliding in the rotating chute, the fixed sub-rod away from the fixed block rotates, and the torsion spring twists accordingly. The positioning slider slides out from the other end of the rotating chute. At this time, the torsion spring changes to the reset state, and the spring changes from the compressed state to the reset state. The positioning slider enters the positioning card slot to realize the fixation between the filter plate and the filter frame. When the filter plate needs to be replaced, press the filter plate to make the positioning slider leave the positioning card slot, the spring is compressed, the torsion spring continues to reset, the positioning slider enters the rotating chute. During the process of the positioning slider sliding in the rotating chute, the torsion spring first resets and then twists in the opposite direction, and the spring gradually resets from the compressed state. Finally, the positioning slider slides out from the notch of the rotating chute to realize the separation between the filter plate and the filter frame, complete the disassembly, and achieve the rapid disassembly of the filter plate, so as to ensure the air filtration effect;

[0028] 2. The fixed rod is divided into two fixed sub-rods, and a torsion spring is arranged at the connection of the two fixed sub-rods. The positioning slider enters the rotating chute from one end of the rotating chute. During the process of the positioning slider sliding in the rotating chute, the fixed sub-rod away from the fixed block rotates, and the torsion spring twists accordingly. The positioning slider slides out from the other end of the rotating chute. At this time, the torsion spring changes to the reset state, and the spring changes from the compressed state to the reset state. The positioning slider enters the positioning card slot to realize the fixation between the filter plate and the filter frame. When the filter plate needs to be replaced, press the filter plate to make the positioning slider leave the positioning card slot, the spring is compressed, the torsion spring continues to reset, the positioning slider enters the rotating chute. During the process of the positioning slider sliding in the rotating chute, the torsion spring first resets and then twists in the opposite direction, and the spring gradually resets from the compressed state. Finally, the positioning slider slides out from the notch of the rotating chute to realize the separation between the filter plate and the filter frame, so as to replace the filter plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is the overall structural schematic diagram of the embodiment of the present application;

[0030] Figure 2 is the partial structural sectional view of the embodiment of the present application, used to show the air inlet passage;

[0031] Figure 3 is Figure 2 the enlarged view of part A in, used to show the connection component;

[0032] Figure 4 is the partial structural schematic diagram of the embodiment of the present application, used to show the positioning card slot;

[0033] Figure 5 It is a partial structural sectional view of an embodiment of the present application, used to show the limiting groove and the limiting plate;

[0034] Figure 6 It is a partial structural schematic diagram of an embodiment of the present application, used to show the positioning component.

[0035] Explanation of reference numerals:

[0036] 1. Laboratory wall; 2. Air inlet passage; 3. Air inlet device; 4. Filter frame; 5. Filter plate; 7. Opening and closing fan blade; 8. Fan blade groove; 9. Second mounting ring; 10. First mounting ring; 11. Connecting bolt; 12. Connecting groove; 13. Opening and closing gear; 14. Tooth; 15. Driving component; 16. Connecting component; 17. Positioning component; 18. Mounting frame; 19. Positioning hole; 20. Fixed rod; 21. Movable rod; 22. Through hole; 23. Fixed block; 24. Spring; 25. Positioning slider; 26. Torsion spring; 27. Rotating inclined groove; 28. Positioning card slot; 29. Fixed auxiliary rod; 30. Opening and closing rod; 31. Moving rack; 32. Opening and closing groove; 33. Rotating tooth; 34. Limiting groove; 35. Limiting plate; 36. Flow guiding frame; 37. Flow guiding plate; 38. Fixed bolt; 39. Elastic gasket; 40. Threaded part; 41. Smooth part; 42. Threaded hole; 43. Rotating handle; 44. Pulling rod; 45. Pulling groove; 46. Flow guiding auxiliary frame; 47. Adjusting groove. Detailed implementation manners

[0037] The following further elaborates on the present application in conjunction with the attached Figures 1-6 drawings.

[0038] An embodiment of the present application discloses a laboratory air supply and purification system. As Figure 1 and Figure 2 shown, it includes a laboratory wall 1. An air inlet passage 2 is opened on the laboratory wall 1. An air inlet device 3 is arranged at the air inlet of the air inlet passage 2. A filter frame 4 adapted to the air inlet passage 2 is slidably arranged in the air inlet passage 2. A plurality of filter plates 5 are arranged on the filter frame 4. Each filter plate 5 is uniformly arranged along the radial direction of the filter frame 4. A quick-release connection mechanism for installing the filter plate 5 to the filter frame 4 is arranged between each filter plate 5 and the filter frame 4.

[0039] As Figure 3 , Figure 4 , Figure 6As shown, the quick-release connection mechanism includes a connection component 16 and a positioning component 17. A plurality of mounting frames 18 are fixedly arranged on the filter frame 4 corresponding to each filter plate 5. A positioning hole 19 is formed in the mounting frame 18. The connection component 16 includes a fixing rod 20 with a diameter adapted to the positioning hole 19 and a movable rod 21 with a diameter larger than the aperture of the positioning hole 19. A plurality of through holes 22 are evenly formed in the filter plate 5. A fixing block 23 is fixedly arranged in each through hole 22. A spring 24 adapted to the through hole 22 is further arranged in each through hole 22. The fixing rod 20 penetrates the movable rod 21 along the radial direction of the movable rod 21 and is slidably connected to the movable rod 21. The movable rod 21 is slidably arranged in the through hole 22. The spring 24 is sleeved on the fixing rod 20. One end of the spring 24 is fixedly connected to the fixing block 23, and the other end of the spring 24 is fixedly connected to the end of the movable rod 21 close to the fixing block 23. One end of the fixing rod 20 is fixedly connected to the fixing block 23, and the other end extends out of the through hole 22. The end of the movable rod 21 away from the fixing block 23 extends out of the through hole 22. The positioning component 17 includes a positioning slider 25 and a torsion spring 26. The fixing rod 20 is divided into two fixing sub-rods 29. The torsion spring 26 is arranged at the connection of the two fixing sub-rods 29. The two ends of the torsion spring 26 are respectively fixedly connected to one end of the two fixing sub-rods 29. Two rotating inclined grooves 27 adapted to the positioning slider 25 are formed on the inner walls of the two opposite sides of the positioning hole 19. The rotation directions of the two rotating inclined grooves 27 are opposite. A positioning card slot 28 is formed on the surface of the mounting frame 18 away from the filter plate 5. Two positioning card slots 28 corresponding to the rotating inclined grooves 27 are formed. The two positioning card slots 28 are respectively communicated with the two rotating inclined grooves 27.

[0040] Align the fixed rod 20 with the positioning hole 19, align the positioning slider 25 with the notch at one end of a rotating inclined groove 27, press the filter plate 5 to move the filter plate 5 towards the mounting frame 18. At this time, the movable block abuts against the outer wall of the mounting frame 18, and the fixed rod 20 enters the positioning hole 19. At this time, the spring 24 changes to a compressed state. The positioning slider 25 enters the rotating inclined groove 27 from the notch at one end of the rotating inclined groove 27. During the sliding process of the positioning slider 25 in the rotating inclined groove 27, the fixed sub-rod 29 away from the fixed block 23 rotates, and the torsion spring 26 twists accordingly. The positioning slider 25 slides out from the other end of the rotating inclined groove 27. At this time, the torsion spring 26 changes to a reset state, and the spring 24 changes from a compressed state to a reset state. After the positioning slider 25 enters the positioning card slot 28, it locks to achieve the fixation between the filter plate 5 and the filter frame 4. When the filter plate 5 needs to be replaced, press the filter plate 5 to make the positioning slider 25 leave the positioning card slot 28, the spring 24 is compressed, and the torsion spring 26 continues to reset. The positioning slider 25 enters the rotating inclined groove 27. During the sliding process of the positioning slider 25 in the rotating inclined groove 27, the torsion spring 26 first resets and then twists in the opposite direction, and the spring 24 gradually resets from the compressed state. Finally, the positioning slider 25 slides out from the notch of the rotating inclined groove 27 to achieve the separation between the filter plate 5 and the filter frame 4, so as to replace the filter plate 5. Multiple groups of quick-release connection mechanisms are provided between the filter plate 5 and the filter frame 4, and each group of quick-release connection mechanisms is evenly and equidistantly arranged between the filter plate 5 and the filter frame 4 to ensure the stability of the filter plate 5 installed on the filter frame 4.

[0041] Such as Figure 2 And Figure 5As shown in the figure, multiple opening and closing fan blades 7 for opening and closing the air inlet passage 2 are arranged between the air inlet device 3 and the filter frame 4. A fan blade groove 8 is provided in the air inlet passage 2 corresponding to the opening and closing fan blades 7. A second mounting ring 9 is fixedly arranged in the air inlet passage 2, and a first mounting ring 10 is rotatably arranged in the air inlet passage 2. The opening and closing fan blades 7 are arranged between the first mounting ring 10 and the second mounting ring 9. A plurality of connecting bolts 11 are passed through the second mounting ring 9, and each connecting bolt 11 is rotatably connected to the second mounting ring 9. A plurality of connecting grooves 12 are provided in the first mounting ring 10 corresponding to the connecting bolts 11. Each connecting bolt 11 passes through the second mounting ring 9 and the opening and closing fan blade 7 and extends into the connecting groove 12. A fixing bolt 38 is fixedly connected to the opening and closing fan blade 7. An opening and closing gear 13 is fixedly arranged on the side wall of each connecting bolt 11, and teeth 14 meshing with the opening and closing gear 13 are provided on the bottom wall of each connecting groove 12. A driving assembly 15 for driving the opening and closing of the opening and closing fan blades 7 is arranged in the air inlet passage 2. The opening and closing mechanism includes an opening and closing rod 30 and a moving rack 31 arranged on the side wall of the opening and closing rod 30. A plurality of moving racks 31 are arranged on the side wall of the opening and closing rod 30, and each moving rack 31 is evenly arranged along the circumferential direction of the opening and closing rod 30. An opening and closing groove 32 for installing the opening and closing rod 30 is further provided on the laboratory wall 1. The opening and closing rod 30 is rotatably arranged in the opening and closing groove 32. The opening and closing groove 32 is communicated with the air inlet passage 2. A rotating tooth 33 meshing with each moving rack 31 is arranged on the side wall of the first mounting ring 10. A limiting groove 34 adapted to the connecting groove 12 is provided on the inner wall of the opening and closing groove 32. A limiting plate 35 is arranged in the limiting groove 34. The limiting plate 35 is fixedly arranged on the side wall of the end of the opening and closing rod 30 close to the first mounting ring 10. The moving rack 31 and the rotating tooth 33 are meshed. When the opening and closing rod 30 rotates in the opening and closing groove 32, the first mounting ring 10 rotates accordingly. When the opening and closing rod 30 rotates until the limiting plate 35 abuts against one inner wall of the limiting groove 34, the opening and closing fan blade 7 is in the open or closed state. When the opening and closing rod 30 rotates in the reverse direction until the limiting plate 35 abuts against the opposite inner wall of the limiting groove 34, the opening and closing fan blade 7 is in the closed or open state. The user can rotate the opening and closing rod 30 to open or close the opening and closing fan blade 7 according to different situations.

[0042] At the air outlet of the air inlet passage 2, a flow guiding frame 36 is further provided. On the flow guiding frame 36, there are multiple flow guiding plates 37 for guiding the wind direction, which is convenient for users to adjust the air outlet angle. On the flow guiding frame 36, there are fixing bolts 38 for fixing the flow guiding frame 36 on the laboratory wall 1. There are multiple fixing bolts 38 on the flow guiding frame 36. One of the fixing bolts 38 includes a threaded portion 40 and a smooth portion 41. A threaded hole 42 adapted to the threaded portion 40 is opened on the end face of the end of the opening and closing rod 30 close to the flow guiding frame 36. The smooth portion 41 is rotatably connected to the flow guiding frame 36. The threaded portion 40 of the fixing bolt 38 penetrates through the flow guiding frame 36 and extends into the threaded hole 42 to be connected with the opening and closing rod 30. At this time, the smooth portion 41 is rotatably connected to the flow guiding frame 36. Users can control the opening and closing of the opening and closing fan blades 7 by controlling the rotation of the fixing bolt 38. An elastic gasket 39 is provided between the fixing bolt 38 and the flow guiding frame 36. The elastic gasket 39 is arranged on the side of the flow guiding frame 36 away from the air inlet passage 2, which can prevent the fixing bolt 38 from damaging the flow guiding frame 36 during rotation, and also has the effect of increasing friction, increasing friction to prevent the opening and closing rod 30 from rotating by itself without external force. A rotating handle 43 is provided at the end of the fixing bolt 38 away from the opening and closing rod 30, which is convenient for users to rotate the fixing bolt 38. A lifting rod 44 is fixedly arranged at the end of the filter frame 4 away from the air inlet 3. A lifting groove 45 adapted to the lifting rod 44 is opened on the flow guiding frame 36, which is convenient for users to take out the filter frame 4 from the air inlet passage 2 to replace the filter plate 5. The flow guiding frame 36 is divided into two flow guiding sub-frames 46 along the lifting groove 45. Each flow guiding plate 37 is respectively arranged in the two flow guiding sub-frames 46. Adjusting grooves 47 adapted to the rotating shafts of the respective flow guiding plates 37 are opened on the side wall of the lifting rod 44, which is convenient for multi-directional air supply to the laboratory at the same time. At the same time, the opening of the adjusting grooves 47 on the side wall of the lifting rod 44 increases the roughness of the lifting rod 44, and improves the friction between the user and the lifting rod 44 when the user pulls out the filter frame 4 from the air inlet passage 2.

[0043] The implementation principle of a laboratory air supply and purification system in an embodiment of the present application is as follows: Start the air inlet 3, introduce the air outside the laboratory into the laboratory through the air inlet passage 2. The air is purified by multiple filter plates 5 in the air inlet passage 2. The filter plate 5 installed on the filter frame 4 needs to be replaced every once in a while. At this time, the flow guiding frame 36 can be removed and the filter frame 4 can be pulled out of the air inlet channel. After pulling out the filter frame 4, press the filter plate 5 to quickly remove the filter plate 5 from the filter frame 4. Align the fixing rod 20 on the new filter plate 5 with the positioning hole 19, align the positioning slider 25 with the end slot of a rotating inclined slot 27, and press the new filter plate 5 again to quickly install the new filter plate 5 onto the filter frame 4. At the same time, users can also rotate the rotating handle 43 to open and close the air inlet passage 2 or adjust the opening and closing degree of the air inlet passage 2 according to needs.

[0044] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A laboratory gas supply and purification system, including a laboratory wall (1), an air inlet passage (2) is provided on the laboratory wall (1), and an air inlet device (3) is arranged at the air inlet of the air inlet passage (2), characterized in that: A filter frame (4) adapted to the air inlet passage (2) is slidably arranged in the air inlet passage (2). A plurality of filter plates (5) for filtering air are arranged on the filter frame (4). Each of the filter plates (5) is uniformly arranged along the radial direction of the filter frame (4). A plurality of mounting frames (18) are fixedly arranged on the filter frame (4) corresponding to each of the filter plates (5). A quick-release connection mechanism is arranged between the filter frame (4) and the filter plate (5). The quick-release connection mechanism includes a connection component (16) for connecting the filter plate (5) and the filter frame (4) and a positioning component (17) for fixing the filter plate (5) on the filter frame (4). A positioning hole (19) is formed in the mounting frame (18). The connection component (16) includes a fixing rod (20) with a diameter adapted to the positioning hole (19) and a movable rod (21) with a diameter larger than the aperture of the positioning hole (19). A plurality of through holes (22) are uniformly formed in the filter plate (5). A fixing block (23) is fixedly arranged in each of the through holes (22). A spring (24) adapted to the through hole (22) is further arranged in each of the through holes (22). The fixing rod (20) penetrates through the movable rod (21) along the radial direction of the movable rod (21). The fixing rod (20) is slidably connected with the movable rod (21). The movable rod (21) is slidably arranged in the through hole (22). The spring (24) is sleeved on the fixing rod (20). One end of the spring (24) is fixedly connected with the fixing block (23). The other end of the spring (24) is fixedly connected with one end of the movable rod (21) close to the fixing block (23). One end of the fixing rod (20) is fixedly connected with the fixing block (23). The other end of the fixing rod (20) extends out of the through hole (22). One end of the movable rod (21) away from the fixing block (23) extends out of the through hole (22). The positioning component (17) includes a positioning slider (25) and a torsion spring (26). The positioning slider (25) is fixedly arranged on the side wall of the fixing rod (20). The fixing rod (20) is divided into two fixed sub-rods (29). The torsion spring (26) is arranged at the connection of the two fixed sub-rods (29). Two ends of the torsion spring (26) are respectively fixedly connected with one ends of the two fixed sub-rods (29). Two rotating inclined grooves (27) adapted to the positioning slider (25) are formed on the inner walls of two opposite sides of the positioning hole (19). The rotation directions of the two rotating inclined grooves (27) are opposite. A positioning card slot (28) is formed on one surface of the mounting frame (18) away from the filter plate (5). Two positioning card slots (28) corresponding to the rotating inclined grooves (27) are formed. The two positioning card slots (28) are respectively communicated with the two rotating inclined grooves (27).

2. The laboratory gas supply and purification system according to claim 1, wherein: A plurality of sets of the connecting components (16) and the positioning components (17) are arranged between the filter plate (5) and the filter frame (4), and each of the connecting components (16) and each of the positioning components (17) are evenly and equidistantly arranged between the filter plate (5) and the filter frame (4).

3. The laboratory gas supply and purification system according to claim 1, wherein: A plurality of opening and closing fan blades (7) for opening and closing the air inlet passage (2) are arranged between the air inlet device (3) and the filter frame (4). A fan blade groove (8) is formed in the air inlet passage (2) corresponding to the opening and closing fan blades (7). A second mounting ring (9) is fixedly arranged in the air inlet passage (2), and a first mounting ring (10) is rotatably arranged in the air inlet passage (2). The opening and closing fan blades (7) are arranged between the first mounting ring (10) and the second mounting ring (9). A plurality of connecting bolts (11) are inserted through the second mounting ring (9). Each of the connecting bolts (11) is rotatably connected to the second mounting ring (9). A plurality of connecting grooves (12) are formed in the first mounting ring (10) corresponding to each of the connecting bolts (11). Each of the connecting bolts (11) penetrates through the second mounting ring (9) and the opening and closing fan blades (7) and extends into the connecting groove (12). The connecting bolts (11) are fixedly connected to the opening and closing fan blades (7). An opening and closing gear (13) is fixedly arranged on the side wall of each of the connecting bolts (11). A tooth (14) meshing with the opening and closing gear (13) is formed on the bottom wall of each of the connecting grooves (12). A driving component (15) for driving the opening and closing of the opening and closing fan blades (7) is arranged in the air inlet passage (2).

4. The laboratory gas supply and purification system according to claim 3, wherein: The driving component (15) includes an opening and closing rod (30) and a moving rack (31) arranged on the side wall of the opening and closing rod (30). A plurality of the moving racks (31) are arranged on the side wall of the opening and closing rod (30), and each of the moving racks (31) is evenly arranged along the circumferential direction of the opening and closing rod (30). An opening and closing groove (32) for installing the opening and closing rod (30) is further formed in the laboratory wall (1). The opening and closing rod (30) is rotatably arranged in the opening and closing groove (32). The opening and closing groove (32) communicates with the air inlet passage (2). A rotating tooth (33) meshing with each of the moving racks (31) is arranged on the side wall of the first mounting ring (10). A limiting groove (34) adapted to the connecting groove (12) is formed on the inner wall of the opening and closing groove (32). A limiting plate (35) is arranged in the limiting groove (34). The limiting plate (35) is fixedly arranged on the side wall of one end of the opening and closing rod (30) close to the first mounting ring (10).

5. The laboratory gas supply and purification system according to claim 4, characterized in that: A flow guiding frame (36) is further arranged at the air outlet of the air inlet passage (2). A plurality of flow guiding plates (37) for guiding the wind direction are arranged on the flow guiding frame (36). A fixing bolt (38) for fixing the flow guiding frame (36) on the laboratory wall (1) is arranged on the flow guiding frame (36), and a plurality of the fixing bolts (38) are arranged on the flow guiding frame (36).

6. The laboratory gas supply and purification system according to claim 5, wherein: An elastic gasket (39) is provided between one of the fixed bolts (38) and the diversion frame (36). The elastic gasket (39) is fixed on the side of the diversion frame (36) away from the air inlet passage (2). The fixed bolt (38) includes a threaded portion (40) and a smooth portion (41). A threaded hole (42) adapted to the threaded portion (40) is formed in the end face of the opening and closing rod (30) near the diversion frame (36), and the smooth portion (41) is rotatably connected to the diversion frame (36).

7. The laboratory gas supply and purification system according to claim 6, wherein: A rotating handle (43) is provided at one end of the fixed bolt (38) away from the opening and closing rod (30).

8. A laboratory gas supply and purification system according to claim 5, characterized in that: A lifting rod (44) for facilitating the extraction of the filter frame (4) from the air inlet passage (2) is fixedly provided at one end of the filter frame (4) away from the air inlet (3). A lifting groove (45) adapted to the lifting rod (44) is formed in the diversion frame (36). The diversion frame (36) is divided into two diversion sub-frames (46) along the lifting groove (45). Each of the diversion plates (37) is respectively arranged in the two diversion sub-frames (46). An adjustment groove (47) adapted to the rotating shaft of each of the diversion plates (37) is formed in the side wall of the lifting rod (44).

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