Air inlet device for civil air defense engineering

Abstract

The civil air defense construction air inlet device comprises a shell and a filter screen assembly, a mounting groove is formed in the shell, the direction of the mounting groove is perpendicular to the flowing direction of air in the shell, and a mounting opening is formed in the side wall of the shell; the filter screen assembly comprises a frame, a filter screen and a sealing plate, the sealing plate is connected with one side of the frame, the filter screen is installed in the middle of the frame, the frame is inserted into the shell along the installation groove, and the sealing plate is embedded into the installation opening and connected with the shell through bolts. The mounting groove is formed in the shell, the filter screen assembly is inserted into the shell through the mounting groove, so that air flowing through the shell is filtered, the threaded hole is formed in the sealing plate, the filter screen assembly can be pulled out of the mounting groove through the driving hammer after the sealing plate is connected with the connecting rod, and the filter screen assembly can be quickly disassembled; and the difficulty of dismounting the filter screen assembly is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of civil air defense engineering equipment, and in particular to an air intake device for civil air defense engineering. Background Art

[0002] my country's civil air defense projects are mainly located in the basements of buildings, using underground structures to form air-raid shelters in wartime to ensure the shelter of personnel and materials, civil air defense command, etc. Since civil air defense projects are located underground, the natural circulation of air is poor, so civil air defense projects are generally equipped with active ventilation systems, which use fans to force air circulation to achieve effective ventilation between underground space and the ground. In order to reduce the entry of external dust into the basement, a filtering device is usually installed at the air inlet end of the ventilation system. For example, the Chinese patent application number 202322317003.5 discloses a filter absorber for civil air defense projects. The side of the filter absorber body can be opened, and the filter can be removed for cleaning or replacement after being used for a period of time. However, in order to ensure the air tightness of the side, the outer side of the filter is usually tightly connected to the inner wall of the shell through a rubber strip, etc., and the filter absorber is usually opened less frequently, and the maintenance interval of the filter is long. The rubber strip is prone to aging and sticking the filter to the inner wall of the shell, making disassembly difficult. Therefore, an air inlet device for civil air defense projects is needed, which is connected to the filter through a connecting rod, and the filter is pulled out of the shell by a hammer, so that the filter replacement work can be completed quickly, reducing the difficulty of maintenance. Utility Model Content

[0003] In order to solve the above problems, the present application proposes an air intake device for civil air defense projects, which is connected to the filter through a connecting rod, and the filter is pulled out of the shell by a hammer, so that the filter can be replaced quickly and the maintenance difficulty can be reduced.

[0004] This application is implemented through the following technical solutions:

[0005] The present application proposes an air intake device for civil air defense projects, comprising: a shell, a filter assembly, a mounting groove being provided inside the shell, the direction of the mounting groove being perpendicular to the flow direction of the gas in the shell, and a mounting port being provided on the side wall of the shell; the filter assembly comprising a frame, a filter, and a sealing plate, the sealing plate being connected to one side of the frame, the filter being installed in the middle of the frame, the frame being inserted into the shell along the mounting groove, the sealing plate being embedded in the mounting port, and the sealing plate being connected to the shell by bolts.

[0006] Furthermore, it also includes a connecting rod and a hammer, wherein a threaded end is provided at one end of the connecting rod, and a limit block is provided at the other end of the connecting rod and the middle of the connecting rod. The hammer is sleeved outside the connecting rod and is located between the two limit blocks. The connecting rod is connected to the sealing plate through the threaded end.

[0007] Furthermore, a reinforcing rib is provided on the outer side of the sealing plate, a threaded hole is provided on the reinforcing rib, and the threaded end of the connecting rod is connected to the threaded hole.

[0008] Furthermore, the axis of the threaded hole is parallel to the direction of the mounting groove.

[0009] Furthermore, a step portion is provided on the installation opening, and the sealing plate matches the structure of the step portion.

[0010] Furthermore, after the sealing plate is installed, the sealing plate is flush with the installation opening.

[0011] Furthermore, a sealing strip is provided between the sealing plate and the mounting opening.

[0012] The beneficial effects of the present application are as follows: by setting a mounting groove in the shell, the filter assembly is inserted into the shell through the mounting groove, thereby filtering the air flowing through the shell; a threaded hole is provided on the sealing plate, and after being connected to the connecting rod, the filter assembly can be pulled out of the mounting groove by a hammer, thereby quickly completing the disassembly of the filter assembly and reducing the difficulty of disassembling the filter assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a structural schematic diagram of the installation slot of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the filter assembly of the utility model;

[0016] In the figure: 1-shell, 2-filter assembly, 3-mounting groove, 4-mounting port, 5-connecting rod, 6-hammer, 7-step portion, 21-frame, 22-filter, 23-sealing plate, 24-reinforcement rib. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. Obviously, the described embodiments are only a part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0018] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0019] In addition, the descriptions of "first", "second", etc. in this application are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0020] like Figures 1 to 3 As shown, an embodiment of the utility model provides an air intake device for civil air defense projects, including: a shell 1, a filter screen assembly 2, a mounting groove 3 is provided inside the shell 1, the direction of the mounting groove 3 is perpendicular to the flow direction of the gas in the shell 1, and a mounting port 4 is provided on the side wall of the shell 1; the filter screen assembly 2 includes a frame 21, a filter screen 22, and a sealing plate 23, the sealing plate 23 is connected to one side of the frame 21, the filter screen 22 is installed in the middle of the frame 21, the frame 21 is inserted into the shell 1 along the mounting groove 3, the sealing plate 23 is embedded in the mounting port 4, and the sealing plate 23 is connected to the shell 1 by bolts.

[0021] One end of the housing 1 is connected to the shutter, and the other end of the housing 1 is connected to the negative pressure fan. The negative pressure fan extracts air from the outside and sends it into the basement to realize the forced flow of air. After the air flows through the filter 22 on the filter assembly 2, the dust is filtered by the filter, thereby achieving the purpose of purifying the air. After the dust accumulates on the filter assembly 2, it needs to be replaced regularly. When replacing, loosen the bolts connecting the sealing plate 23 and the housing 1, and then connect the connecting rod 5 with the threaded hole on the reinforcing rib 24. After the hammer 6 hits the limit block on the connecting rod 5, the impact force is transmitted to the filter assembly 2. Under the action of the impact force, the filter assembly 2 overcomes the resistance such as the adhesive force of the rubber strip and is gradually pulled out of the installation groove 3. Compared with directly using manpower to pull out the filter assembly 2 from the installation groove 3, the method of using the connecting rod 5 and the hammer 6 is faster and suitable for operation in a narrow space, which is convenient for workers to quickly complete the disassembly of the filter assembly and reduce the difficulty of disassembling the filter assembly.

[0022] Preferably, it also includes a connecting rod 5 and a hammer 6, one end of the connecting rod 5 is provided with a threaded end, the other end of the connecting rod 5 and the middle of the connecting rod 5 are provided with limit blocks, the hammer 6 is sleeved outside the connecting rod 5 and is located between the two limit blocks, the connecting rod 5 is connected to the sealing plate 23 through the threaded end, and after the worker pushes the hammer 6 by hand, it quickly hits the limit block, thereby generating an impact force to overcome the resistance and pull the filter assembly 2 out of the installation groove 3.

[0023] In a preferred embodiment, a reinforcing rib 24 is provided on the outer side of the sealing plate 23. A threaded hole is provided on the reinforcing rib 24. The threaded end of the connecting rod 5 is connected to the threaded hole. The reinforcing rib 24 improves the structural strength of the sealing plate 23. When the connecting rod 5 acts on the threaded hole, the impact force can be evenly distributed to various parts of the sealing plate 23 to avoid the sealing plate 23 being broken due to the impact force.

[0024] In a specific embodiment, the axis of the threaded hole is parallel to the direction of the installation slot 3 , so that the impact force acts on the filter screen assembly 2 in parallel, causing the filter screen assembly 2 to be pulled out from the installation slot 3 .

[0025] In a specific embodiment, a step portion 7 is provided on the installation opening 4, and the sealing plate 23 matches the structure of the step portion 7. The sealing plate 23 cooperates with the step portion 7 to improve air tightness.

[0026] In a preferred embodiment, after the sealing plate 23 is installed, the sealing plate 23 is flush with the installation opening 4, which makes it convenient for workers to confirm whether the sealing plate 23 is installed in place during installation.

[0027] Preferably, a sealing strip is provided between the sealing plate 23 and the mounting opening 4 to improve the air tightness between the sealing plate 23 and the mounting opening 4, so that the airflow is filtered through the filter assembly 2 before entering the fan, thereby improving the dust removal effect.

[0028] Of course, the present application may have many other implementations. Based on the present implementation, other implementations obtained by ordinary technicians in this field without any creative work are all within the scope of protection of the present application.

Claims

1. An air intake device for civil air defense engineering, characterized in that: include: A housing (1), a filter assembly (2), wherein a mounting groove (3) is provided inside the housing (1), the direction of the mounting groove (3) is perpendicular to the flow direction of gas in the housing (1), and a mounting opening (4) is provided on the side wall of the housing (1); the filter assembly (2) comprises a frame (21), a filter (22), and a sealing plate (23), wherein the sealing plate (23) is connected to one side of the frame (21), the filter (22) is installed in the middle of the frame (21), the frame (21) is inserted into the housing (1) along the mounting groove (3), the sealing plate (23) is embedded in the mounting opening (4), and the sealing plate (23) is connected to the housing (1) by bolts.

2. The air intake device for civil air defense engineering according to claim 1, characterized in that: It also includes a connecting rod (5) and a hammer (6), wherein one end of the connecting rod (5) is provided with a threaded end, the other end of the connecting rod (5) and the middle of the connecting rod (5) are provided with a limit block, the hammer (6) is sleeved outside the connecting rod (5) and is located between the two limit blocks, and the connecting rod (5) is connected to the sealing plate (23) through the threaded end.

3. The air intake device for civil air defense engineering according to claim 1, characterized in that: A reinforcing rib (24) is provided on the outer side of the sealing plate (23), a threaded hole is provided on the reinforcing rib (24), and the threaded end of the connecting rod (5) is connected to the threaded hole.

4. The air intake device for civil air defense engineering according to claim 3, characterized in that: The axis of the threaded hole is parallel to the direction of the mounting groove (3).

5. The air intake device for civil air defense engineering according to claim 1, characterized in that: The installation opening (4) is provided with a step portion (7), and the sealing plate (23) matches the structure of the step portion (7).

6. The air intake device for civil air defense engineering according to claim 5, characterized in that: After the sealing plate (23) is installed, the sealing plate (23) is flush with the installation opening (4).

7. The air intake device for civil air defense engineering according to claim 6, characterized in that: A sealing strip is provided between the sealing plate (23) and the mounting opening (4).

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