Quick Replacement and Inspection Device for Air Conditioning Filters in Subway Vehicles

Abstract

This utility model provides a quick replacement and maintenance device for air conditioning filters in subway vehicles, relating to the technical field of air conditioning filters in subway vehicles. The utility model includes mounting rails fixedly installed on the inner walls of both sides of the outer casing. A filter body is slidably inserted between the two mounting rails. A handle is fixedly installed on the top surface of the filter body. Vertical grooves are formed on the inner walls of both sides of one of the mounting rails. A baffle plate is slidably connected between the two vertical grooves. A groove is formed on the surface of the baffle plate, and a sliding plate is slidably connected inside the groove. A rod is fixedly installed on the surface of the sliding plate. A matching insertion hole is formed on the inner wall of one of the vertical grooves. This utility model, through its installation device, utilizes the sliding cooperation design between the mounting rails and the filter body, allowing for easy removal and installation of the filter without the need for special tools. The handle facilitates easy pulling, greatly simplifying the operation process.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning filter technology for subway vehicles, and in particular to a quick replacement and maintenance device for air conditioning filters in subway vehicles. Background Technology

[0002] The air conditioning filter in subway cars is a core filtration component in the air conditioning system of rail transit vehicles. It mainly includes two types: fresh air filter and return air filter. These filters are widely installed on the air conditioning units on the top of the car and at the return air vents in the ceiling. Through a dual filtration mechanism, they achieve two core functions: first, purifying the air entering the car to ensure the health and comfort of passengers in a high-density passenger flow environment; and second, preventing pollutants from adhering to core components such as the air conditioning evaporator and fan blades, reducing equipment wear and energy consumption, and extending the service life of the air conditioning unit. Because subways operate continuously for long periods in complex environments such as tunnels and ground surfaces, the filters need to be cleaned or replaced monthly to maintain filtration efficiency and the stability of the air conditioning system.

[0003] The replacement and maintenance process of air conditioning filters in existing subway cars suffers from significant efficiency bottlenecks and operational defects, making it difficult to achieve rapid operation. The filters are mostly secured with bolts, which require specialized tools to apply external force during bolt installation and removal. This external force can easily cause uneven stress on the filter frame, leading to deformation and damage to HEPA high-efficiency filter media, increasing filter media consumption costs. Furthermore, bolt sealing relies on rubber gaskets for a seal, but these gaskets are prone to aging, cracking, or deformation after repeated installation and removal, failing to maintain a tight seal. This ultimately leads to a short circuit in the air conditioning system, allowing unfiltered air to bypass the filter and directly enter the air conditioning system, severely weakening the air purification capacity and affecting the air quality inside the train and the stability of the air conditioning system. Utility Model Content

[0004] The purpose of this utility model is to solve the problems mentioned above in the background art by proposing a quick replacement and maintenance device for the air conditioning filter of subway vehicles.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a quick replacement and maintenance device for air conditioning filters in subway vehicles, comprising a housing, mounting plates fixedly installed on both sides of the housing, mounting holes formed on the surface of the mounting plates, ventilation slots formed on both sides of the housing, a through slot formed on the top surface of the housing, and mounting devices provided on both inner wall surfaces of the housing, the mounting devices comprising mounting rails fixedly installed on both inner wall surfaces of the housing, a filter body slidably inserted between the two mounting rails, and a handle fixedly installed on the top surface of the filter body.

[0006] Preferably, vertical grooves are formed on the inner wall surfaces of both sides of one of the mounting rails, and a blocking plate is slidably connected between the two vertical grooves.

[0007] Preferably, the surface of the blocking plate is provided with a groove, a sliding plate is slidably connected inside the groove, and a plug is fixedly installed on the surface of the sliding plate. One of the vertical grooves has a plug hole on its inner wall surface that matches the plug.

[0008] Preferably, a vertical plate is fixedly installed on the surface of the blocking plate, and a first spring is fixedly installed between the vertical plate and the sliding plate.

[0009] The aforementioned components achieve the following effect: by utilizing the sliding fit design between the mounting rail and the filter body, the filter can be installed and removed without the need for special tools, and can be easily pulled out with the handle, greatly simplifying the operation process.

[0010] Preferably, a sealing device is provided on one inner wall surface of the through groove. The sealing device includes a slot formed on one inner wall surface of the through groove. A through groove is formed on one side surface of the outer shell. The through groove and the through groove are interconnected. A sealing plate is movably inserted into the slot. The end of the sealing plate away from the slot passes through the through groove and is fixedly installed with a limit ring.

[0011] Preferably, the top surface of the outer casing is provided with a horizontal groove, and two movable plates are slidably connected inside the horizontal groove. A second spring is fixedly installed between the two movable plates. A hinge plate is hinged to the surface of the movable plate away from the horizontal groove, and a T-shaped plate is hinged to the end of the hinge plate away from the movable plate. A pull plate is fixedly installed on the surface of the T-shaped plate.

[0012] Preferably, a limiting rod is fixedly installed on the side surface of the T-shaped plate away from the pull plate, and the end of the limiting rod away from the T-shaped plate is inserted into a limiting ring.

[0013] The aforementioned components achieve the following effects: enabling the sealing plate to quickly close and open the through slot through the engagement of the slot and groove, requiring no complicated steps. The combination of the movable plate, hinge plate, and limit rod driven by the second spring can automatically lock the sealing plate in place. Releasing the pull plate allows for precise insertion, ensuring a secure and stable lock that is not easily loosened. The sealing fit between the sealing plate and the slot effectively prevents unfiltered air from flowing around, ensuring the filtration effect of the air conditioning supply and preventing short circuits in the air supply. At the same time, it eliminates the need for easily aging sealing gaskets, resulting in more stable and durable sealing performance. Furthermore, the overall disassembly and assembly process is quick and efficient, without affecting the overall efficiency of filter replacement.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows: In this invention, by setting up an installation device, the sliding fit design between the installation rail and the filter body allows for easy installation and removal of the filter without the need for special tools. The handle facilitates easy pulling, significantly simplifying the operation process. The linkage structure of the blocking plate, the first spring, the insertion rod, and the insertion hole enables quick positioning and unlocking of the filter. The spring's rebound force ensures stable insertion of the insertion rod, preventing the filter from shifting in the bumpy environment of subway operation. The overall structure distributes stress evenly, effectively preventing filter frame deformation and protecting the filter material from damage. Simultaneously, the installation process is simple and efficient, improving the convenience and safety of filter replacement and maintenance. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This utility model Figure 1 Another structural diagram from a different angle; Figure 3 This utility model Figure 1 A schematic diagram of the cross-sectional structure; Figure 4 This utility model Figure 1 A schematic diagram of the decomposed structure; Figure 5 This utility model Figure 3 A schematic diagram of the three-dimensional structure at point A in the middle; Figure 6 This utility model Figure 4 A schematic diagram of the three-dimensional structure at point B.

[0016] Legend: 1. Outer shell; 2. Mounting device; 201. Mounting rail; 202. Filter body; 203. Handle; 204. Vertical groove; 205. Baffle plate; 206. Groove; 207. Slide plate; 208. Insert rod; 209. Insertion hole; 210. Vertical plate; 211. First spring; 3. Sealing device; 301. Slot; 302. Through groove; 303. Sealing plate; 304. Horizontal groove; 305. Movable plate; 306. Second spring; 307. Hinge plate; 308. T-shaped plate; 309. Pull plate; 310. Limiting rod; 311. Limiting ring; 4. Mounting plate; 5. Ventilation groove; 6. Through groove. Detailed Implementation

[0017] Example 1, such as Figure 1-6 As shown, the quick replacement and maintenance device for the air conditioning filter of the subway car includes a housing 1. Mounting plates 4 are fixedly installed on both sides of the housing 1. Mounting plates 4 have mounting holes on their surfaces. Ventilation slots 5 are provided on both sides of the housing 1. A through slot 6 is provided on the top surface of the housing 1. The ventilation slot 5 is elongated and has a built-in dustproof net. Sealing strips are pasted on the edges of the through slot 6.

[0018] Reference Figure 3-5 As shown in this embodiment: Mounting devices 2 are provided on both inner wall surfaces of the outer casing 1. Each mounting device 2 includes mounting rails 201 fixedly mounted on the inner wall surfaces of both sides of the outer casing 1. A filter body 202 is slidably inserted between the two mounting rails 201. A handle 203 is fixedly mounted on the top surface of the filter body 202. Vertical grooves 204 are formed on both inner wall surfaces of one of the mounting rails 201. A baffle plate 205 is slidably connected between the two vertical grooves 204. A groove 2 is formed on the surface of the baffle plate 205. 06. A sliding plate 207 is slidably connected inside the groove 206. A rod 208 is fixedly installed on the surface of the sliding plate 207. An insertion hole 209 matching the rod 208 is opened on the inner wall surface of one of the vertical grooves 204. A vertical plate 210 is fixedly installed on the surface of the baffle plate 205. A first spring 211 is fixedly installed between the vertical plate 210 and the sliding plate 207. The frame of the filter body 202 is made of ABS material and has built-in HEPA high-efficiency filter media. The first spring 211 is made of stainless steel with an elastic coefficient of 2N / mm.

[0019] Reference Figure 4-6 As shown in this embodiment: a sealing device 3 is provided on one inner wall surface of the through groove 6. The sealing device 3 includes a slot 301 formed on one inner wall surface of the through groove 6. A through groove 302 is formed on one side surface of the outer shell 1. The through groove 302 and the through groove 6 are interconnected. A sealing plate 303 is movably inserted into the slot 301. The end of the sealing plate 303 away from the slot 301 passes through the through groove 302 and is fixedly installed with a limit ring 311. A transverse groove 304 is formed on the top surface of the outer shell 1. Two movable plates 305 are slidably connected inside the transverse groove 304. The two movable plates 305 are fixedly connected to each other. A second spring 306 is installed. A hinge plate 307 is hinged to the surface of the movable plate 305 away from the transverse groove 304. A T-shaped plate 308 is hinged to the end of the hinge plate 307 away from the movable plate 305. A pull plate 309 is fixedly installed on the surface of the T-shaped plate 308. A limit rod 310 is fixedly installed on the side surface of the T-shaped plate 308 away from the pull plate 309. The end of the limit rod 310 away from the T-shaped plate 308 is inserted into a limit ring 311. An EPDM sealing strip is built into the slot 301. An EPDM sealing layer is pasted on the edge of the sealing plate 303. The elastic coefficient of the second spring 306 is 3 N / mm.

[0020] Working principle: When the device is needed, first fix the outer casing 1 to the filter installation position of the subway car air conditioner through the mounting holes on the mounting plates 4 on both sides of the outer casing 1. Ensure that the outer casing 1 is installed firmly and that the ventilation slots 5 on both sides are precisely aligned with the air inlet of the air conditioner to ensure smooth ventilation. When the filter needs to be maintained or replaced later, there is no need to disassemble the outer casing 1. The operation can be carried out directly at the installation position: first pull the pull plate 309 outward. The movement of the pull plate 309 causes the T-shaped plate 308 to move synchronously. When the T-shaped plate 308 moves, it will pull the two hinge plates 307, which in turn will cause the two movable plates 305 to move closer to each other inside the transverse groove 304. As the two movable plates 305 slide, they compress the second spring 306, causing it to be compressed. Simultaneously, the movement of the T-shaped plate 308 also drives the limiting rod 310 to move synchronously, allowing it to move out of the limiting ring 311. After the limiting rod 310 separates from the limiting ring 311, the closing plate 303 loses its restraint within the slot 301 and through groove 302. At this point, the closing plate 303 can be pulled out from inside the slot 301 and through groove 302. With the closing plate 303 no longer obstructing it, the through groove 6 is fully open. Then, the sliding plate 207 slides into the groove 206. 7. When moving within the groove 206, the first spring 211 is compressed; simultaneously, the movement of the slide plate 207 also causes the insertion rod 208 to move synchronously, allowing the insertion rod 208 to move out of the insertion hole 209 on the inner wall of the vertical groove 204. After the insertion rod 208 separates from the insertion hole 209, the baffle plate 205 loses its restraint inside the vertical groove 204. At this point, the baffle plate 205 can be slid upward along the vertical groove 204 and moved out. After the baffle plate 205 is moved out, the filter body 202 loses its restraint inside the mounting rail 201. At this point, the handle 203 can be grasped to smoothly pull out the filter body 202 along the groove of the mounting rail 201. Then, the extracted filter body 202 is cleaned, maintained, or replaced with a new filter body. After replacement, the new or maintained filter body 202 is inserted into the housing 1 along the groove of the mounting rail 201 and pushed to the appropriate position. Then, the baffle plate 205 is inserted along the vertical groove 204 and slid to the top of the filter body 202. Then, the slide plate 207 is released, and the compressed first spring 211 will generate a rebound force, pushing the slide plate 207 to move in the opposite direction in the groove 206, thereby driving the insertion rod 208 to re-insert into the insertion hole 209, completing the limiting and fixing of the baffle plate 205, and realizing the installation and positioning of the filter body 202.Then, the sealing plate 303 is inserted into the slot 301 through the through groove 302. The pull plate 309 is released, and the compressed second spring 306 generates a rebound force, pushing the two movable plates 305 to slide in opposite directions within the transverse groove 304. The sliding of the movable plates 305 causes the hinge plate 307 to rotate, thereby pushing the T-shaped plate 308 and the limiting rod 310 to move synchronously, allowing the limiting rod 310 to insert into the limiting ring 311, completing the limiting and fixing of the sealing plate 303, achieving the closure of the through groove 6, ensuring the sealing performance of the device, and guaranteeing the normal operation of the air conditioner.

[0021] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may use the disclosed technical content to make changes or modifications to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the scope of the utility model's technical solution, still fall within the protection scope of this utility model's technical solution. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through specific circumstances.

Claims

1. A quick replacement and maintenance device for air conditioning filters in subway vehicles, comprising a housing (1), wherein mounting plates (4) are fixedly installed on both sides of the housing (1), mounting holes are provided on the surface of the mounting plates (4), ventilation slots (5) are provided on both sides of the housing (1), and a through slot (6) is provided on the top surface of the housing (1), characterized in that: The inner wall surfaces on both sides of the outer shell (1) are provided with mounting devices (2). The mounting devices (2) include mounting rails (201) fixedly mounted on the inner wall surfaces on both sides of the outer shell (1). A filter body (202) is slidably inserted between the two mounting rails (201). A handle (203) is fixedly mounted on the top surface of the filter body (202).

2. The quick replacement and maintenance device for subway car air conditioning filters according to claim 1, characterized in that: One of the mounting rails (201) has vertical grooves (204) on both inner wall surfaces, and a baffle plate (205) is slidably connected between the two vertical grooves (204).

3. The quick replacement and maintenance device for subway car air conditioning filters according to claim 2, characterized in that: The surface of the baffle plate (205) is provided with a groove (206), and a sliding plate (207) is slidably connected inside the groove (206). A plug rod (208) is fixedly installed on the surface of the sliding plate (207), and a plug hole (209) matching the plug rod (208) is provided on the inner wall surface of one of the vertical grooves (204).

4. The quick replacement and maintenance device for subway car air conditioning filters according to claim 2, characterized in that: A vertical plate (210) is fixedly installed on the surface of the baffle plate (205), and a first spring (211) is fixedly installed between the vertical plate (210) and the sliding plate (207).

5. The quick replacement and maintenance device for subway car air conditioning filters according to claim 1, characterized in that: A sealing device (3) is provided on one side of the inner wall surface of the through groove (6). The sealing device (3) includes a slot (301) opened on one side of the inner wall surface of the through groove (6). A through groove (302) is opened on one side of the outer shell (1). The through groove (302) and the through groove (6) are interconnected. A sealing plate (303) is movably inserted into the slot (301). The end of the sealing plate (303) away from the slot (301) passes through the through groove (302) and is fixedly installed with a limit ring (311).

6. The quick replacement and maintenance device for subway car air conditioning filters according to claim 1, characterized in that: The top surface of the outer shell (1) is provided with a horizontal groove (304). Two movable plates (305) are slidably connected inside the horizontal groove (304). A second spring (306) is fixedly installed between the two movable plates (305). A hinge plate (307) is hinged to the surface of the movable plate (305) away from the horizontal groove (304). A T-shaped plate (308) is hinged to the end of the hinge plate (307) away from the movable plate (305). A pull plate (309) is fixedly installed on the surface of the T-shaped plate (308).

7. The quick replacement and maintenance device for subway car air conditioning filters according to claim 6, characterized in that: A limiting rod (310) is fixedly installed on the side surface of the T-shaped plate (308) away from the pull plate (309), and the end of the limiting rod (310) away from the T-shaped plate (308) is inserted into the limiting ring (311).

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