Elevator air purification and disinfection device and purification and disinfection method

Abstract

The invention discloses an elevator air purification and disinfection device and a purification and disinfection method, and relates to the field of elevator air purification, the elevator air purification and disinfection device comprises a shell and an exhaust frame, a cover plate is mounted at the top of the shell, an air feeder is mounted in the shell, and inner plates are elastically and symmetrically arranged in the cover plate; a second air hole and a first air hole are formed in the inner plate and the cover plate in a penetrating mode respectively, an inserting groove is formed in the bottom of the inner plate, an arc-shaped filtering plate is arranged in the shell, an inserting rod is arranged in an interlayer of the shell in a sliding mode, and an exhaust groove is formed in the outer wall of the exhaust frame. Inserting rods can slide out of the inserting grooves, dust and impurities in an elevator shaft are filtered for the first time and then filtered for the second time through an arc-shaped filtering plate, the contact area of introduced gas and an elevator car is enlarged through cooperation of an adjusting block and an arc-shaped winding rod, and the air feeder is in a closed state in the follow-up unmanned state; and the ultraviolet disinfection plate can disinfect the interior of the elevator car.

Description

Technical Field

[0001] The invention relates to the field of elevator air purification, and in particular to an elevator air purification and disinfection device and a purification and disinfection method. Background Art

[0002] An elevator is a vertical lift powered by an electric motor and equipped with a box-shaped cabin. It is used to transport people or goods in multi-story buildings. There are also step-type ones, with treads mounted on tracks and running continuously, commonly known as escalators or moving walkways, which are fixed lifting equipment serving specified floors. Vertical elevators have a car whose size and structure are convenient for passengers to enter and exit or load and unload goods. It is customary to use elevators as a general term for vertical transportation tools within buildings, regardless of their driving mode.

[0003] Existing elevators mostly use air supply systems to purify and disinfect the air. At present, the air supply system of the elevator car is either equipped with a special ventilation device, which uses gaps for ventilation, or equipped with a special air conditioner for ventilation. This ventilation method will discharge dust and impurities in the elevator shaft into the elevator car during actual use, which is easy to cause discomfort to passengers, resulting in low overall practicality. In addition, manual disinfection of the elevator has a certain time limit, and manual disinfection is required every once in a while, which will waste a lot of manpower and material resources.

[0004] In summary, the above structure will discharge dust and impurities in the elevator shaft into the elevator car during actual use, which may easily cause discomfort to passengers. In addition, manual disinfection of the elevator has a certain time limit, which will waste a lot of manpower and material resources. Summary of the invention

[0005] Based on this, the purpose of the present invention is to provide an elevator air purification and disinfection device and purification and disinfection method to solve the technical problems that dust and impurities in the elevator shaft will be discharged into the elevator car, which may easily cause discomfort to passengers, and manual disinfection of the elevator will waste a lot of manpower and material resources.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an elevator air purification and disinfection device, comprising a shell and an exhaust frame, a cover plate is installed on the top of the shell, and a blower is installed in the shell, an inner plate is elastically and symmetrically arranged in the cover plate, and a second air hole and a first air hole are respectively penetrated on the inner plate and the cover plate, and slots are symmetrically arranged on both sides of the second air hole at the bottom of the inner plate, an arc-shaped filter plate is elastically and slidably arranged at the bottom of the blower in the shell, and a plug rod cooperating with the arc-shaped filter plate is slidably arranged in the interlayer of the shell, an array of exhaust grooves is arranged in a surrounding manner on the outer wall of the exhaust frame, and an ultraviolet disinfection plate is rotatably arranged in the exhaust groove, an array of guide columns corresponding to the ultraviolet disinfection plate is arranged at the bottom of the arc filter plate, and an adjustment block is arranged on the outer wall of the guide column, one side of the adjustment block is hinged with an arc-shaped winding rod, and the other end of the arc-shaped winding rod is hinged to the ultraviolet disinfection plate.

[0007] By adopting the above technical solution, the plug rod will slide out of the slot in the inner plate during the operation of the blower. At this time, the dust and impurities in the elevator shaft are filtered for the first time, and then enter the shell for the second filtration through the arc filter plate. The exhaust slot is opened by the cooperation of the adjustment block and the arc winding rod. At this time, the contact area between the incoming gas and the elevator car can be further expanded. In the subsequent unmanned state, the blower is closed to complete the sealing of the shell. At this time, the ultraviolet disinfection plate can perform long-term irradiation and disinfection treatment on the elevator car, thereby completing the purification and disinfection of the elevator.

[0008] The present invention is further configured such that a groove is provided on one side of the second air hole at the top of the inner plate, and an elastic component is installed in the groove, a sealing block is connected to the top of the elastic component, and a sealing arrangement is formed between the sealing block and the first air hole.

[0009] By adopting the above technical solution, under normal conditions, the sealing block will be stuck in the first air hole on the top of the cover plate, further improving the sealing effect of the first air hole on the top of the cover plate, and after the air intake through the first air hole and the second air hole is completed, the stuck-in sealing block can also clean the impurities and dust remaining in the first air hole, effectively preventing the dust and impurities in the elevator shaft from clogging the first air hole for a long time, thereby ensuring the stability of the subsequent air intake through the first air hole.

[0010] The present invention is further configured such that a slide groove is provided on the inner wall of the shell, and a slider matching the slide groove is installed on the outer wall of the arc filter plate, a plug rod is connected to the top of the slider, and a guide column is connected to the bottom of the slider.

[0011] By adopting the above technical solution, the arc filter plate slides in the vertical direction in the shell through the cooperation of the slide groove and the slider, which effectively prevents the arc filter plate itself from tilting, and the slider will drive the insertion rod and the guide column to slide up and down during the up and down sliding process.

[0012] The present invention is further configured such that a return spring is installed inside the slide groove, and the top of the return spring is connected to the guide column.

[0013] By adopting the above technical solution, when the arc filter plate slides downward, the guide column will drive the reset spring at the bottom. At this time, the reset spring itself is in a compressed state. Subsequently, when the blower stops working, the reset force of the reset spring itself causes the arc filter plate to reset and slide upward.

[0014] The present invention is further configured such that a plug hole for inserting the plug rod is provided at the bottom of the cover plate, and the slot on the inner plate in the reset state is staggered with the plug hole.

[0015] By adopting the above technical solution, during the upward reset sliding of the arc filter plate, the insertion rod will slide through the insertion hole to the slot of the inner plate. Since the slot and the insertion hole are staggered, the insertion rod will drive the inner plate to slide inward, thereby making the spring on one side of the inner plate in a stretched state.

[0016] The present invention is further configured such that the bottom end of the slot is configured to be open, and the top of the insertion rod is configured to be arc-shaped.

[0017] By adopting the above technical solution, the open-shaped setting makes it easy for the insertion rod to be stably inserted into the slot. At the same time, the arc-shaped setting at one end of the insertion rod makes it easy to reduce the sliding friction between the insertion rod and the slot, effectively preventing the insertion rod from getting stuck during the insertion process.

[0018] The present invention is further configured such that an exhaust port cooperating with the exhaust groove is provided at the top of the exhaust frame, and the exhaust port is located at the bottom of the exhaust frame in a normally open state.

[0019] By adopting the above technical solution, the diffusion area of ​​air entering the elevator car is guaranteed through the cooperation of the exhaust port and the exhaust groove, thereby further improving the overall ventilation effect.

[0020] The present invention is further configured such that the cover plate and the top of the shell are detachably arranged.

[0021] By adopting the above technical solution, the detachable setting makes it easy for subsequent staff to replace and maintain the shell, thereby improving the overall maintenance efficiency of the device.

[0022] The present invention is further configured such that the inner diameter of the filter hole on the arc-shaped filter plate is smaller than the inner diameters of the second pore and the first pore.

[0023] By adopting the above technical solution, it is easy to filter particles of different sizes in sequence, further improving the air purification effect.

[0024] An elevator air purification and disinfection method comprises the following steps: Step 1: Install the housing on the top of the elevator car through the action of the bolt assembly, so that the exhaust frame is located inside the elevator car, and then install the ultraviolet disinfection plate around the outer wall of the exhaust frame; Step 2: When working, the blower starts, and the arc filter plate moves downward by its own force. At this time, the plug rod slides out of the slot of the inner plate, so that the first air hole and the second air hole overlap to take in air, and the air in the elevator shaft is filtered once, and then the air is filtered twice under the action of the arc filter plate, and the air is purified and discharged into the elevator car; Step 3: When there is no one in the elevator car and the air blower is stopped, the arc filter plate is reset by the reset spring, thereby completing the sealing of the shell, further preventing dust and impurities in the elevator shaft and the car from infecting the air blower inside the shell. At this time, the ultraviolet disinfection plate can perform long-term irradiation and disinfection treatment on the elevator car.

[0025] By adopting the above technical solution, the purification of the incoming gas is completed. At the same time, the contact area between the incoming gas and the motor car is increased under the action of the arc filter plate. The ultraviolet disinfection plate can perform long-term irradiation and disinfection treatment on the elevator car, thereby completing the purification and disinfection of the elevator.

[0026] In summary, the present invention mainly has the following beneficial effects: The present invention provides an inner plate symmetrically slidingly arranged in the cover plate, and seals the top of the shell through the first air hole and the second air hole in a normal state, effectively preventing dust and impurities in the elevator shaft from infecting the internal blower. During the operation of the blower, the arc-shaped filter plate at the bottom is blown to move downward, and the plug rod slides out of the slot in the inner plate. At this time, the dust and impurities in the elevator shaft are first filtered through the cooperation of the first air hole and the second air hole, and then enter the shell to be filtered through the arc-shaped filter plate for the second time, thereby completing the purification of the incoming gas. At the same time, the contact area between the incoming gas and the motor car is increased under the action of the arc-shaped filter plate, thereby improving the overall purification effect. The present invention drives the adjusting block at the bottom to slide down along with the arc filter plate during the downward movement. At this time, the exhaust slot is in an open state through the cooperation of the adjusting block and the arc winding rod. At this time, the contact area between the gas introduced and the elevator car can be further expanded. When the elevator is not working in the unmanned state, the blower is in a closed state. Under the action of the reset spring, the arc filter plate slides upward, thereby completing the sealing work of the shell, further preventing dust and impurities in the elevator shaft and the car from infecting the blower inside the shell. At this time, the ultraviolet disinfection plate can perform long-term irradiation and disinfection treatment on the elevator car, thereby completing the purification and disinfection work of the elevator. In this process, no manual purification and disinfection is required, saving a lot of manpower and material resources. The present invention elastically provides a sealing block on one side of the second air hole at the top of the inner plate. Under normal conditions, the sealing block can be inserted into the first air hole on the top of the cover plate, further improving the sealing effect of the first air hole on the top of the cover plate. After the air intake is completed through the first air hole and the second air hole, the snap-in sealing block can also clean the impurities and dust remaining in the first air hole, effectively preventing the dust and impurities in the elevator shaft from clogging the first air hole for a long time, thereby ensuring the stability of the subsequent air intake of the first air hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A top perspective view of the present invention; Figure 2 A bottom-up stereogram of the present invention; Figure 3 It is an internal view of the present invention; Figure 4 It is a schematic diagram of the position structure of the arc filter plate of the present invention; Figure 5 is a cross-sectional view of the present invention; Figure 6 This is a schematic diagram of the sealing structure of the cover plate of the present invention; Figure 7 This is a schematic diagram of the cover plate of the present invention in an open state: Figure 8 It is a schematic diagram of the exhaust frame structure of the present invention; Fig. 9 For the present invention Figure 4 A magnified view of middle; Fig.10 For the present invention Figure 5 Enlarged view of middle B; Fig.11 For the present invention Figure 6 Enlarged view of C in the middle.

[0028] In the figure: 1. shell; 2. exhaust frame; 3. cover plate; 4. first air hole; 5. exhaust groove; 6. ultraviolet disinfection plate; 7. exhaust port; 8. blower; 9. arc filter plate; 10. plug rod; 11. slide groove; 12. inner plate; 13. sealing block; 14. elastic component; 15. plug hole; 16. second air hole; 17. slot; 18. adjustment block; 19. arc winding rod; 20. reset spring; 21. slider; 22. guide column. DETAILED DESCRIPTION

[0029] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] The following describes an embodiment of the present invention based on its overall structure. Example

[0031] An elevator air purification and disinfection device and purification and disinfection method, such as Figure 1-11 As shown, it includes a shell 1, an exhaust frame 2, a cover plate 3, a blower 8, a filtering mechanism, a sealing mechanism and a reset mechanism. The cover plate 3 is installed on the top of the shell 1, and the blower 8 is installed inside the shell 1. The staff installs the shell 1 on the top of the elevator car, and exposes the exhaust frame 2 to the inside of the elevator car through a bolt assembly. When the passengers use the elevator, the blower 8 inside the shell 1 will start to extract air from the outside, because an arc filter plate 9 is elastically slidably provided at the bottom of the blower 8 in the shell 1. At this time, the arc filter plate 9 slides downward under the action of the airflow, thereby driving the arc filter plate 9 The plug rod 10 of the side wall slides downward. Since one end of the plug rod 10 penetrates into the cover plate 3, an inner plate 12 is elastically and symmetrically arranged in the cover plate 3, and a second air hole 16 and a first air hole 4 are respectively penetrated on the inner plate 12 and the cover plate 3. In the initial state, the second air hole 16 and the first air hole 4 are staggered, and slots 17 are symmetrically arranged on both sides of the second air hole 16 at the bottom of the inner plate 12. At this time, the plug rod 10 will slide down and out of the slot 17. Since the spring on one side of the inner plate 12 is in a stretched state, it will drive the inner plate 12 to slide to both sides. At this time, the second air hole 16 and the first air hole 4 are overlapped. The gas is discharged into the shell 1 through the second air hole 16 and the first air hole 4, and the dust impurities in the elevator shaft are filtered for the first time under the cooperation of the first air hole 4 and the second air hole 16, and then blown to the arc filter plate 9, and the second filtration is performed through the arc filter plate, thereby completing the purification of the incoming gas. At the same time, under the action of the arc filter plate, the contact area between the incoming gas and the motor car is increased, thereby improving the overall purification effect, and a guide column 22 is installed at the bottom of the arc filter plate 9, and an adjustment block 18 is arranged on the outer wall of the guide column 22, and an array of exhaust grooves 5 are arranged around the outer wall of the exhaust frame 2, and a rotating block 18 is arranged in the exhaust groove 5. An ultraviolet disinfection plate 6 is dynamically provided, and an arc-shaped winding rod 19 is hinged on one side of the adjustment block 18, and the other end of the arc-shaped winding rod 19 is hinged to the ultraviolet disinfection plate 6. When the arc-shaped filter plate 9 slides downward, the adjustment block 18 will be driven to slide with it. At this time, the ultraviolet disinfection plate 6 is rotated by the action of the arc-shaped winding rod 19, so that the exhaust groove 5 is opened, and the top of the exhaust frame 2 is provided with an exhaust port 7 that cooperates with the exhaust groove 5, and the exhaust port 7 is located at the bottom of the exhaust frame 2 and is in a normally open state. The exhaust port 7 cooperates with the exhaust groove 5 to ensure that the air enters the diffusion area inside the elevator car, and the overall ventilation effect is further improved; At the same time, when the elevator car is unmanned and not running, the blower 8 itself will stop working. At this time, the arc filter plate 9 is driven to slide upward under the action of the reset spring 20, and the insertion rod 10 is reinserted into the slot 17 on the inner plate 12 and drives the inner plate 12 to slide inward. In this state, the first air hole 4 and the second air hole 16 are staggered, and the ultraviolet disinfection plate 6 is reset and rotated under the action of the adjustment block 18 and the arc-shaped winding rod 19, and the exhaust groove 5 is re-blocked, thereby completing the sealing of the shell 1 as a whole, and further preventing dust and impurities in the elevator shaft and the car from infecting the blower 8 inside the shell 1. At this time, the ultraviolet disinfection plate 6 can perform long-term irradiation and disinfection treatment on the elevator car, thereby completing the purification and disinfection of the elevator. In this process, no manual purification and disinfection is required, saving a lot of manpower and material resources.

[0032] See also Figure 5 and Figure 8The inner wall of the shell 1 is provided with a slide groove 11, and a slider 21 cooperating with the slide groove 11 is installed on the outer wall of the arc filter plate 9. The top of the slider 21 is connected with the plug rod 10, and the bottom of the slider 21 is connected with a guide column 22. Through the cooperation of the slide groove 11 and the slider 21, the arc filter plate 9 slides in the vertical direction in the shell 1, effectively preventing the arc filter plate 9 from tilting itself, and the slider 21 will drive the plug rod 10 and the guide column 22 to slide up and down during the up and down sliding process, and a return spring 20 is installed inside the slide groove 11, and the top of the return spring 20 is connected to the guide column 22. When the arc filter plate 9 slides downward, the guide column 22 will squeeze the return spring 20 at the bottom. At this time, the return spring 20 itself is in a compressed state. When the air supply fan 8 stops working later, the return force of the return spring 20 itself causes the arc filter plate 9 to return and slide upward.

[0033] See also Figure 6 and Figure 7 A socket 15 for inserting the insertion rod 10 is provided at the bottom of the cover plate 3. The slot 17 on the inner plate 12 in the reset state is offset from the socket 15. During the upward reset sliding of the arc-shaped filter plate 9, the insertion rod 10 will slide toward the slot 17 of the inner plate 12 through the socket 15. Due to the offset setting of the slot 17 and the socket 15, the insertion rod 10 will drive the inner plate 12 to slide inward, thereby making the spring on one side of the inner plate 12 in a stretched state. Example

[0034] like Figure 6 An elevator air purification and disinfection device and purification and disinfection method are shown, and the overall structure is similar to that of the first embodiment, wherein the top of the inner plate 12 is located on one side of the second air hole 16 and is provided with a groove, and an elastic component 14 is installed in the groove, and a sealing block 13 is connected to the top of the elastic component 14, and the sealing block 13 and the first air hole 4 are sealed. Under normal conditions, the sealing block 13 will be stuck in the first air hole 4 on the top of the cover plate 3, further improving the sealing effect of the first air hole 4 on the top of the cover plate 3. After the air intake is completed through the first air hole 4 and the second air hole 16, the snap-in sealing block 13 can also clean the impurities and dust remaining in the first air hole 4, effectively preventing the dust and impurities in the elevator shaft from clogging the first air hole 4 for a long time, and ensuring the stability of the subsequent air intake of the first air hole 4.

[0035] The working principle of the present invention is as follows: when in use, the housing 1 is installed on the top of the elevator car so that the exhaust frame 2 is exposed to the interior of the elevator car. When the user takes the elevator, the blower 8 in the housing 1 will work, and at this time the blower 8 will blow air to the arc filter plate 9, so that the arc filter plate 9 slides downward in the housing 1. Since an array of sliders 21 are arranged around the outer wall of the arc filter plate 9, the plunger 10 will be driven to move downward during the downward sliding of the slider 21. At this time, the plunger 10 slides out of the slot 17 of the inner plate 12, and the inner plate 12 is driven to slide to both sides under the action of the spring in the stretched state. At this time, the first air hole 4 on the cover plate 3 will be in a coincidence state with the second air hole 16 on the inner plate 12. At this time, the blower 8 can send the air in the elevator shaft into the housing 1, and complete the primary filtration of the air through the cooperation of the inner plate 12 and the cover plate 3, and then perform secondary filtration through the arc filter plate 9, thereby completing the purification of the incoming air; At the same time, in the process of the slider 21 moving downward, the adjusting block 18 at the bottom will be driven to slide along, and the ultraviolet disinfection plate 6 on the outer wall of the exhaust frame 2 is rotated by the cooperation of the adjusting block 18 and the arc-shaped winding rod 19. Since the ultraviolet disinfection plate 6 corresponding to the slider 21 is arranged on the outer wall of the exhaust frame 2 in a surrounding manner, the exhaust groove 5 is opened at this time, and the contact area between the incoming air and the gas in the elevator car is further increased by cooperating with the bottom exhaust port 7, thereby accelerating the internal ventilation and improving the comfort of the passengers. In addition, when the elevator car is not working, the blower 8 will also stop working. At this time, under the action of the return spring 20, the first air hole 4 and the second air hole 16 are dislocated, and the ultraviolet disinfection plate 6 closes the exhaust groove 5 again, further preventing dust and impurities in the elevator shaft and the car from infecting the blower 8 inside the shell 1. At this time, the ultraviolet disinfection plate 6 can perform long-term irradiation and disinfection treatment on the elevator car, thereby completing the purification and disinfection of the elevator.

[0036] Although an embodiment of the present invention has been shown and described, this specific embodiment is only an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. An elevator air purification and disinfection device, comprising a housing (1) and an exhaust frame (2), a cover plate (3) being installed on the top of the housing (1), and a blower (8) being installed inside the housing (1), characterized in that: An inner plate (12) is elastically and symmetrically arranged inside the cover plate (3), and a second air hole (16) and a first air hole (4) are respectively penetrated on the inner plate (12) and the cover plate (3), and slots (17) are symmetrically arranged on both sides of the second air hole (16) at the bottom of the inner plate (12), and an arc-shaped filter plate (9) is elastically and slidably arranged at the bottom of the air blower (8) in the shell (1), and an insertion rod (10) cooperating with the arc-shaped filter plate (9) is slidably arranged in the interlayer of the shell (1). ), the outer wall of the exhaust frame (2) is provided with an array of exhaust grooves (5) in a surrounding manner, and an ultraviolet disinfection plate (6) is rotatably provided in the exhaust groove (5), the bottom of the arc-shaped filter plate (9) is provided with an array of guide pillars (22) corresponding to the ultraviolet disinfection plate (6), and an adjustment block (18) is provided on the outer wall of the guide pillar (22), one side of the adjustment block (18) is hinged with an arc-shaped winding rod (19), and the other end of the arc-shaped winding rod (19) is hinged to the ultraviolet disinfection plate (6).

2. An elevator air purification and disinfection device according to claim 1, characterized in that: A groove is provided at the top of the inner plate (12) and on one side of the second air hole (16), and an elastic component (14) is installed in the groove. A sealing block (13) is connected to the top of the elastic component (14), and a sealing arrangement is formed between the sealing block (13) and the first air hole (4).

3. An elevator air purification and disinfection device according to claim 1, characterized in that: The inner wall of the housing (1) is provided with a slide groove (11), and the outer wall of the arc-shaped filter plate (9) is provided with a slide block (21) that cooperates with the slide groove (11), the top of the slide block (21) is connected to a plug rod (10), and the bottom of the slide block (21) is connected to a guide column (22).

4. An elevator air purification and disinfection device according to claim 3, characterized in that: A return spring (20) is installed inside the slide groove (11), and the top of the return spring (20) is connected to the guide column (22).

5. The elevator air purification and disinfection device according to claim 1, characterized in that: The bottom of the cover plate (3) is provided with an insertion hole (15) for inserting the insertion rod (10), and the slot (17) on the inner plate (12) in the reset state is arranged in a staggered manner with the insertion hole (15).

6. An elevator air purification and disinfection device according to claim 5, characterized in that: The bottom end of the slot (17) is arranged in an open shape, and is arranged in an arc shape at the top of the insertion rod (10).

7. An elevator air purification and disinfection device according to claim 1, characterized in that: An exhaust port (7) cooperating with the exhaust groove (5) is provided at the top of the exhaust frame (2), and the exhaust port (7) is located at the bottom of the exhaust frame (2) and is in a normally open state.

8. The elevator air purification and disinfection device according to claim 1, characterized in that: The cover plate (3) and the top of the shell (1) are detachably arranged.

9. The elevator air purification and disinfection device according to claim 1, characterized in that: The inner diameter of the filter hole on the arc-shaped filter plate (9) is smaller than the inner diameters of the second air hole (16) and the first air hole (4).

10. An elevator air purification and disinfection method, characterized in that: The following steps are involved: Step 1: Install the housing on the top of the elevator car through the action of the bolt assembly, so that the exhaust frame is located inside the elevator car, and then install the ultraviolet disinfection plate around the outer wall of the exhaust frame; Step 2: When working, the blower starts, and the arc filter plate moves downward by its own force. At this time, the plug rod slides out of the slot of the inner plate, so that the first air hole and the second air hole overlap to take in air, and the air in the elevator shaft is filtered once, and then the air is filtered twice under the action of the arc filter plate, and the air is purified and discharged into the elevator car; Step 3: When there is no one in the elevator car and the air blower is stopped, the arc filter plate is reset by the reset spring, thereby completing the sealing of the shell, further preventing dust and impurities in the elevator shaft and the car from infecting the air blower inside the shell. At this time, the ultraviolet disinfection plate can perform long-term irradiation and disinfection treatment on the elevator car.

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