Cavity slot type return air filtering device convenient to maintain

Abstract

The utility model relates to a cavity slot type return air filtering device convenient to maintain. The cavity slot type return air filtering device comprises a cover plate, a body and a filtering device, a fixing block is arranged at the bottom of the cover plate; a connecting hole is formed in the bottom surface of the fixing block; the body comprises a fixing seat and a connecting seat, the fixing seat is fixedly arranged on the body, the lower portion of the connecting seat is rotatably arranged on the fixing seat, the upper portion of the connecting seat is matched with the connecting hole, and the upper portion of the cover plate is fixedly connected with the body. The filtering device is located in a cavity formed by the cover plate and the body. The cover plate is convenient to disassemble and assemble, the filtering device is convenient to replace, and the maintenance time is greatly shortened.

Description

Technical Field

[0001] The utility model relates to a cavity slit type return air filter device which is convenient to maintain and belongs to the technical field of rail vehicles. Background Art

[0002] In rail vehicles, the driver's cab is generally equipped with air-conditioning supply and return air devices. The supply air device is generally installed on the top of the driver's cab, and the return air device is generally installed in the driver's cab, so as to ensure smooth airflow in the driver's cab and positive pressure balance.

[0003] Since rail vehicles often go in and out of areas with harsh environments, such as deserts and other areas with high PM concentrations, some return air devices are not equipped with filters, which will greatly reduce the life of the air conditioning unit. Some return air devices are equipped with filters, but the cover at the air inlet of the return air device is not easy to remove, which makes the replacement of the filter device cumbersome. Figure 1 As shown in the schematic diagram of the existing return air device, the cover plate is fixed to the main body by screws at the four corners. Some vehicles will have a filter device installed in the cavity. When the filter device needs to be replaced, four screws need to be unscrewed for replacement, and finally have to be screwed back, which is inconvenient for maintenance. Summary of the invention

[0004] The utility model aims to overcome the above-mentioned shortcomings and provides a cavity slit type return air filtering device which is convenient to maintain.

[0005] The purpose of the utility model is achieved in this way:

[0006] A cavity slit type return air filter device with convenient maintenance, characterized by comprising a cover plate, a body and a filter device;

[0007] A fixing block is arranged at the bottom of the cover plate, and a connecting hole is opened on the bottom surface of the fixing block; the body comprises a fixing seat and a connecting seat, the fixing seat is fixedly arranged on the body, the lower part of the connecting seat is rotatably arranged on the fixing seat, the upper part of the connecting seat is matched with the connecting hole, and the upper part of the cover plate is fixedly connected to the body;

[0008] The filter device is located in the cavity formed by the cover plate and the body.

[0009] Furthermore, the cross section of the fixing block is a right triangle.

[0010] Furthermore, a limit pin is provided on the side of the cover plate, and the limit pin cooperates with the inner wall of the body.

[0011] Furthermore, a fixing hole is opened on the upper part of the cover plate, and a fixing assembly is arranged on the upper part of the main body. The fixing assembly adopts a nut and a nut, the lower end of the nut is fixed on the main body, and the upper end of the nut passes through the fixing hole and is fixed with the nut.

[0012] Furthermore, the filter device uses filter cotton as the medium.

[0013] Furthermore, the nut of the fixing assembly has a hexagonal cross-section, and the shape of the fixing hole of the cover plate corresponds to the nut.

[0014] Furthermore, a shock-absorbing pad is provided on the fixing assembly, and after the cover plate is fixedly connected to the body, the inner side of the cover plate fits with the shock-absorbing pad.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model discloses a cavity slit type return air filter device which is easy to maintain. It only needs to unscrew the nut of the fixing component, the upper part of the cover plate can be pulled open, and finally the cover plate can be lifted up to be taken down, so that the filter device can be conveniently replaced, which greatly reduces the maintenance time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of an existing return air device.

[0018] Figure 2 It is a schematic diagram of a cavity slit type return air filter device with convenient maintenance according to the utility model.

[0019] Figure 3 for Figure 2 Schematic diagram with the cover removed.

[0020] Figure 4 A schematic diagram of the cover.

[0021] Figure 5 for Figure 2 Magnified image of the upper part.

[0022] Figure 6 for Figure 2 Enlarged view of the lower part.

[0023] In the figure:

[0024] Cover plate 1, fixing block 1.1, connecting hole 1.2, limiting nail 1.3, fixing hole 1.4, body 2, fixing seat 2.1, connecting seat 2.2, fixing assembly 2.3, filtering device 3. DETAILED DESCRIPTION

[0025] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0026] See also Figure 1 The utility model discloses a cavity slit type return air filtering device which is convenient to maintain, comprising a cover plate 1, a body 2 and a filtering device 3.

[0027] The body 2 is arranged on the cover plate 1 to form a cavity with slits on four sides, and the slits are used for the entry of return air.

[0028] A fixing block 1.1 with a right-angled triangular cross-section is respectively arranged on both sides of the bottom of the cover plate 1, and a connecting hole 1.2 is opened on the bottom surface of the fixing block 1.1; the main body 2 includes a fixing seat 2.1 and a connecting seat 2.2, the fixing seat 2.1 is fixedly arranged on the main body 2, the lower part of the connecting seat 2.2 is rotatably arranged on the fixing seat 2.1, and the upper part of the connecting seat 2.2 is inserted into the connecting hole 1.2 for fixing.

[0029] As a preferred embodiment, a limit pin 1.3 is provided on the side of the cover plate 1, and the limit pin 1.3 cooperates with the inner wall of the body 2 to prevent the cover plate 1 from colliding with the body 2 while ensuring air return through the slits.

[0030] A fixing hole 1.4 is opened on the upper part of the cover plate 1, and a fixing assembly 2.3 is arranged on the upper part of the body 2. The fixing assembly 2.3 adopts a nut and a nut, the lower end of the nut is fixed on the body 2, and the upper end of the nut passes through the fixing hole 1.4 and is fixed with the nut.

[0031] As a preferred embodiment, the nut of the fixing assembly 2.3 has a hexagonal cross-section, and the shape of the fixing hole 1.4 of the cover plate 1 corresponds to the nut. This structure can ensure the stability of the connection between the cover plate 1 and the body 2.

[0032] As a preferred embodiment, a shock-absorbing pad 2.4 is provided on the fixing component 2.3. After the cover plate 1 is fixedly connected to the body 2, the inner side of the cover plate 1 fits against the shock-absorbing pad 2.4, which can reduce the noise generated by the collision between the cover plate 1 and the body 2.

[0033] The filter device 3 is located in the cavity, and the filter device 3 uses filter cotton to filter dust-like substances.

[0034] Maintenance: Just unscrew the nut of the fixing assembly 2.3. Since the lower part of the connecting seat 2.2 is rotatably set on the fixing seat 2.1, the upper part of the connecting seat 2.2 is inserted into the connecting hole 1.2 for fixing, so the upper part of the cover plate 1 can be pulled open, and finally the cover plate 1 is lifted upward, the upper part of the connecting seat 2.2 is disengaged from the connecting hole 1.2, and the filter device can be easily replaced.

[0035] Installation: First connect the lower part of the cover 1 to the body 2, then insert the upper part of the connecting seat 2.2 into the connecting hole 1.2, and then close the upper part of the cover 1. At this time, the nut passes through the fixing hole 1.4 of the cover 1, and the nut is tightened to complete the fixation.

[0036] The utility model discloses a cavity slit type return air filter device which is easy to maintain. Compared with the return air device in the prior art, the cover plate can be disassembled and assembled only by screwing the nut located on the front side of the cover plate 1, so the return air filter device is easy to maintain.

[0037] In the above embodiments, the present invention is only described exemplarily, but those skilled in the art may make various modifications to the present invention without departing from the spirit and scope of the present invention after reading this patent application.

Claims

1. A cavity slit type return air filter device with convenient maintenance, characterized in that: It includes a cover plate, a body and a filtering device; A fixing block is arranged at the bottom of the cover plate, and a connecting hole is opened on the bottom surface of the fixing block; the body comprises a fixing seat and a connecting seat, the fixing seat is fixedly arranged on the body, the lower part of the connecting seat is rotatably arranged on the fixing seat, the upper part of the connecting seat is matched with the connecting hole, and the upper part of the cover plate is fixedly connected to the body; The filter device is located in the cavity formed by the cover plate and the body; the cross section of the fixing block is a right triangle.

2. According to claim 1, a cavity slot type return air filter device with convenient maintenance, characterized in that: The side of the cover plate is provided with a limit pin, and the limit pin cooperates with the inner wall of the body.

3. According to claim 1, a cavity slot type return air filter device with convenient maintenance, characterized in that: A fixing hole is opened on the upper part of the cover plate, and a fixing component is arranged on the upper part of the body. The fixing component adopts a nut and a nut, the lower end of the nut is fixed on the body, and the upper end of the nut passes through the fixing hole and is fixed with the nut.

4. The cavity slit type return air filter device with convenient maintenance according to claim 1 is characterized in that: The filter device uses filter cotton as the medium.

5. According to claim 3, a cavity slot type return air filter device with convenient maintenance, characterized in that: The nut of the fixing assembly has a hexagonal cross section, and the shape of the fixing hole of the cover plate corresponds to the nut.

6. The cavity slit type return air filter device with convenient maintenance according to claim 3 is characterized in that: A shock-absorbing pad is arranged on the fixing assembly, and after the cover plate is fixedly connected to the body, the inner side of the cover plate fits with the shock-absorbing pad.

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