A pipeline ventilation structure for civil air defense engineering

Abstract

This utility model discloses a duct ventilation structure for civil defense engineering, relating to the field of civil defense engineering technology. It includes ventilation ducts with dust filter boxes fixedly installed between them. Each dust filter box contains dust filter screens and a rotating dust filter assembly and a cleaning assembly. The rotating dust filter assembly includes a mounting plate, a connecting cylinder, a movable plate, and a motor. This duct ventilation structure for civil defense engineering, by setting up a rotating filter assembly and using a motor to drive the mounting plates to rotate, causes the connecting cylinders between the two mounting plates to rotate synchronously. The movable plate and multiple dust filter screens then rotate synchronously as well. In this way, when air in the ventilation duct passes through the dust filter box, it undergoes multi-layer dust filtration by the rotating dust filter screens, effectively ensuring the filtration effect. The cleaning assembly allows for convenient cleaning of dust particles accumulated in the gaps of the dust filter screens.

Description

Technical Field

[0001] This utility model relates to the field of civil defense engineering technology, specifically a pipeline ventilation structure for civil defense engineering. Background Technology

[0002] Civil defense works refer to underground protective structures built independently to ensure the shelter of personnel and materials, command of civil air defense, and medical rescue during wartime, as well as basements built in conjunction with above-ground buildings that can be used for air defense during wartime. Existing civil defense works, when used as civil defense fortifications, all need to achieve ventilation, thus requiring the use of multiple pipes for ventilation operations.

[0003] However, existing civil defense ventilation ducts lack effective dust filtration mechanisms when air is circulating, resulting in a large amount of impurities in the circulating air and affecting the cleanliness of the civil defense project. To overcome the above defects, the prior art (Chinese patent application number 202322398018.9, application date 2023-09-05) is a civil defense ventilation duct with dust filtration function. When air passes through the dust filter frame, it is suppressed by the dust filter screen inside the inner plate. The filtered impurities fall into the bottom frame through the discharge port, so that the inner plate receives the dust and impurities generated by filtration. This overcomes the problem that existing civil defense ventilation ducts lack effective dust filtration mechanisms when air is circulating, resulting in a large amount of impurities in the circulating air and affecting the cleanliness of the civil defense project. However, the dust filtration mechanism of the above device only uses a single layer of dust filter screen, resulting in a general dust filtration effect. Moreover, after long-term use, dust particles will clog the gaps in the dust filter screen, making the duct ventilation poor and affecting its use.

[0004] To address the aforementioned issues, there is an urgent need for innovative design based on existing equipment. Therefore, we have proposed a duct ventilation structure for civil defense projects that can effectively solve these problems. Utility Model Content

[0005] The purpose of this utility model is to provide a duct ventilation structure for civil defense projects, in order to solve the problem that the dust filtration mechanism of the above-mentioned device mentioned in the background art only uses a single layer of dust filter, resulting in a mediocre dust filtration effect. Moreover, after long-term use, dust particles will clog the gaps in the dust filter, causing poor duct ventilation and affecting its use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a duct ventilation structure for civil defense engineering, comprising ventilation ducts, dust filter boxes fixedly installed between the ventilation ducts, and dust filter screens provided inside the dust filter boxes; a rotating dust filter assembly is provided inside the dust filter boxes, the rotating dust filter assembly comprising mounting plates snapped onto both ends of the ventilation ducts, and a connecting cylinder fixedly connected between the two mounting plates, and a movable plate provided at one end of one of the mounting plates; multiple dust filter screens are provided and fixedly connected to the end face of the movable plate, and the dust filter screens are circumferentially distributed on the outer side of the connecting cylinder; a motor is fixedly installed at the end of the dust filter box away from the movable plate through a mounting bracket, and the motor is limitedly inserted into the mounting plate; a cleaning component for cleaning dust particles accumulated on the dust filter screens is provided inside the dust filter box.

[0007] Preferably, both mounting plates are provided with multiple overlapping slots that match the dust filter screens. The overlapping slots can securely connect the two ends of the multiple dust filter screens to ensure the stability of the motor driving its rotation.

[0008] Preferably, one end of the motor's output shaft is fixedly connected to a limiting shaft, and one end of the mounting plate is provided with a limiting insertion hole that matches the structure of the limiting shaft.

[0009] Preferably, the cleaning component includes a lead screw rotatably connected to both ends of the connecting cylinder, with one end of the lead screw extending through to the outside of the movable plate. The outer side of the lead screw is threadedly connected to a threaded fitting, and the outer wall of the threaded fitting is fixedly connected to multiple sliding parts. The connecting cylinder has multiple elongated grooves, and the sliding parts slide through the elongated grooves and extend between two adjacent dust filters. Each sliding part has a cleaning brush fixedly connected to both sides, and the cleaning brush is in close contact with the side of the dust filter.

[0010] Preferably, the movable plate is fixed to the mounting plate by a snap-fit ​​assembly. The snap-fit ​​assembly includes a snap-fit ​​ring disposed on the end face of the movable plate. A plurality of fixing rods are fixedly connected to the end face of the mounting plate. A plurality of snap-fit ​​grooves are provided on the snap-fit ​​ring, and the fixing rods slide correspondingly on the inner side of the snap-fit ​​grooves. One end of the snap-fit ​​groove protrudes, and a notch is provided on the outer wall of the fixing rod. The protruding part of the snap-fit ​​groove is correspondingly snapped into the notch of the fixing rod.

[0011] Preferably, one end of the snap ring is slidably connected to a plug rod, and the plug rod is inserted into the inner side of the mounting plate. A spring is fixedly connected between the snap ring and the plug rod.

[0012] Preferably, the bottom of the dust filter box is provided with a cleaning outlet, which is normally closed, and the dust accumulated inside the bottom of the dust filter box can be cleaned out simply by pulling it open.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This kind of pipeline ventilation structure for civil defense engineering, by setting a rotating filter material assembly, using a motor to drive the mounting plate to rotate, the connecting cylinder between the two mounting plates rotates synchronously, and the movable plate and multiple dust filters rotate synchronously. In this way, when the air in the ventilation duct passes through the dust filter box, it can be subjected to multi-layer dust filtration by multiple rotating dust filters, which effectively ensures the filtration effect. By setting a cleaning component, the dust particles accumulated in the gaps of the dust filters can be easily cleaned. The specific contents are as follows: (1) By setting a rotating filter material assembly, using a motor to drive the mounting plate to rotate, the connecting cylinder between the two mounting plates rotates synchronously, and the movable plate and multiple dust filters rotate synchronously. In this way, when the air in the ventilation duct passes through the dust filter box, it can be subjected to multi-layer dust filtration by multiple rotating dust filters, which, compared with the previously fixed single-layer dust filters, can effectively ensure the filtration effect.

[0014] (2) By setting up a cleaning component, simply turn the exposed end of the screw to rotate it, which will drive the threaded assembly to move horizontally. The sliding parts and cleaning brush move synchronously. In this way, the moving cleaning brush can clean both sides of the dust filter to sweep away the dust particles that are blocked in its gaps, so that the pipe can be ventilated smoothly and is easy to use.

[0015] (3) By setting up a snap-fit ​​assembly, the protruding part of the snap-fit ​​groove is snapped into the notch of the fixed rod, so that the movable plate and the mounting plate can be fixed relative to each other, thereby preventing the dust filter from sliding relative to the connecting cylinder and causing structural instability.

[0016] (4) By using a spring to push the insert rod to engage with the inner side of the mounting plate, the engagement ring can be limited to prevent it from rotating axially and causing the protruding part of the engagement groove to come out of the fixing rod notch. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal cross-sectional structure of the dust filter box of this utility model;

[0019] Figure 3 This is an exploded structural diagram of the dust filter screen, mounting plate, and connecting cylinder of this utility model;

[0020] Figure 4 This is a schematic diagram of the internal cross-sectional structure of the connecting cylinder of this utility model;

[0021] Figure 5 This is a partial structural schematic diagram of the cleaning component of this utility model;

[0022] Figure 6 This is a schematic diagram of the snap-fit ​​assembly of this utility model.

[0023] In the diagram: 1. Ventilation duct; 2. Dust filter box; 3. Dust filter screen; 4. Mounting plate; 5. Connecting cylinder; 6. Movable plate; 7. Overlap groove; 8. Mounting bracket; 9. Motor; 10. Limiting shaft; 11. Lead screw; 12. Threaded fitting; 13. Sliding component; 14. Cleaning brush; 15. Snap-fit ​​ring; 16. Fixing rod; 17. Snap-fit ​​slide groove; 18. Insert rod; 19. Spring; 20. Cleaning outlet. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1: Please refer to Figures 1-6 This utility model provides the following technical solution: a duct ventilation structure for civil defense engineering, including a ventilation duct 1, a dust filter box 2 fixedly installed between the ventilation ducts 1, and a dust filter screen 3 provided inside the dust filter box 2; a rotating dust filter assembly is provided inside the dust filter box 2, the rotating dust filter assembly includes mounting plates 4 snapped onto both ends of the ventilation duct 1, and a connecting cylinder 5 fixedly connected between the two mounting plates 4, and a movable plate 6 is provided at one end of one of the mounting plates 4, multiple dust filter screens 3 are provided and fixedly connected to the end face of the movable plate 6, and the dust filter screens 3 are circumferentially distributed on the outside of the connecting cylinder 5, and the end of the dust filter box 2 away from the movable plate 6 is fixed by a mounting bracket 8. A motor 9 is fixedly installed and is inserted into the mounting plate 4 for a limiting connection. By setting a rotating filter material assembly, the motor 9 drives the mounting plate 4 to rotate. The connecting cylinder 5 between the two mounting plates 4 rotates synchronously, and the movable plate 6 and multiple dust filter screens 3 rotate synchronously as well. In this way, when the air in the ventilation duct 1 passes through the dust filter box 2, it can be subjected to multi-layer dust filtration by multiple rotating dust filter screens 3. Compared with the previously fixed single-layer dust filter screen 3, it can effectively ensure the filtration effect. In addition, both mounting plates 4 are provided with multiple overlapping grooves 7 that match the dust filter screens 3. The overlapping grooves 7 can securely overlap the two ends of multiple dust filter screens 3 to ensure the stability of the rotation driven by the motor 9.

[0026] One end of the motor 9 is fixedly connected to the output shaft of the limiting shaft 10, and one end of the mounting plate 4 is provided with a limiting insertion hole that matches the structure of the limiting shaft 10. By cooperating with the limiting shaft 10 and the limiting insertion hole, the motor 9 can drive the mounting plate 4 to rotate synchronously. This structure is easy to disassemble and assemble, so as to facilitate the inspection and maintenance of the device.

[0027] Meanwhile, the movable plate 6 is relatively fixed to the mounting plate 4 by a snap-fit ​​assembly. The snap-fit ​​assembly includes a snap-fit ​​ring 15 disposed on the end face of the movable plate 6. Multiple fixing rods 16 are fixedly connected to the end face of the mounting plate 4. Multiple snap-fit ​​grooves 17 are provided on the snap-fit ​​ring 15, and the fixing rods 16 slide correspondingly on the inner side of the snap-fit ​​grooves 17. One end of the snap-fit ​​groove 17 protrudes, and a notch is provided on the outer wall of the fixing rod 16. The protruding part of the snap-fit ​​groove 17 is correspondingly snapped into the notch of the fixing rod 16. In this way, the movable plate 6 and the mounting plate 4 can be relatively fixed, thereby preventing the dust filter 3 from sliding relative to the connecting cylinder 5, which would cause structural instability.

[0028] In addition, the bottom of the dust filter box 2 is provided with a cleaning outlet 20. The cleaning outlet 20 is normally closed, and the dust accumulated inside the bottom of the dust filter box 2 can be cleaned out simply by pulling it open.

[0029] Example 2: Based on Example 1, the dust filter box 2 is equipped with a cleaning component for cleaning dust particles accumulated on the dust filter screen 3. The cleaning component includes a lead screw 11 rotatably connected to both ends of the connecting cylinder 5, with one end of the lead screw 11 extending to the outside of the movable plate 6. The outer side of the lead screw 11 is threadedly connected to a threaded fitting 12, and multiple sliding parts 13 are fixedly connected to the outer wall of the threaded fitting 12. Multiple long grooves are provided on the connecting cylinder 5. The sliding parts 13 slide through the long grooves and extend between two adjacent dust filter screens 3. Cleaning brushes 14 are fixedly connected to both sides of each sliding part 13, and the cleaning brushes 14 are in close contact with the side of the dust filter screen 3. By setting up the cleaning component, simply turning the exposed end of the lead screw 11 can drive the threaded fitting 12 to move horizontally. The sliding parts 13 and the cleaning brushes 14 move synchronously. In this way, the moving cleaning brushes 14 can sweep the sides of the dust filter screen 3 to remove the dust particles blocking its gaps, so that the duct ventilation is smooth and easy to use.

[0030] Furthermore, one end of the snap ring 15 is slidably connected to the insert rod 18, and the insert rod 18 is inserted into the inner side of the mounting plate 4. A spring 19 is fixedly connected between the snap ring 15 and the insert rod 18. The spring 19 pushes the insert rod 18 to snap into the inner side of the mounting plate 4, which can limit the snap ring 15 and prevent it from rotating axially, causing the protruding part of the snap groove 17 to fall out of the notch of the fixing rod 16.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A duct ventilation structure for civil defense engineering, comprising ventilation ducts (1), wherein dust filter boxes (2) are installed between the ventilation ducts (1), and dust filter screens (3) are provided inside the dust filter boxes (2); characterized in that The dust filter box (2) is equipped with a rotating dust filter assembly. The rotating dust filter assembly includes mounting plates (4) that are snapped onto both ends of the ventilation duct (1), and a connecting cylinder (5) is connected between the two mounting plates (4). One end of one of the mounting plates (4) is provided with a movable plate (6). The dust filter screen (3) is provided with multiple screens and is connected to the end face of the movable plate (6). The end of the dust filter box (2) away from the movable plate (6) is equipped with a motor (9) through a mounting bracket (8), and the motor (9) is limited to the mounting plate (4). The dust box (2) is equipped with a cleaning component for cleaning dust particles accumulated on the dust filter (3).

2. The duct ventilation structure for a civil defense construction according to claim 1, characterized in that: Both mounting plates (4) are provided with multiple overlapping grooves (7) that match the dust filter (3) to securely connect the two ends of the multiple dust filter (3).

3. The duct ventilation structure for a civil defense construction of claim 1, wherein: One end of the output shaft of the motor (9) is fixedly connected to a limiting shaft (10), and one end of the mounting plate (4) is provided with a limiting insertion hole that matches the structure of the limiting shaft (10).

4. The duct ventilation structure for civil defense projects according to claim 1, characterized in that: The cleaning assembly includes a lead screw (11) rotatably connected to both ends of the connecting cylinder (5), and one end of the lead screw (11) extends through to the outside of the movable plate (6). The outer side of the lead screw (11) is threadedly connected to a threaded fitting (12), and the outer wall of the threaded fitting (12) is fixedly connected to multiple sliding parts (13). Multiple long grooves are provided on the connecting cylinder (5). The sliding parts (13) slide through the long grooves and the connecting cylinder (5) and extend to the space between two adjacent dust filters (3). Each sliding part (13) is fixedly connected to two sides with a cleaning brush (14), and the cleaning brush (14) is in close contact with the side of the dust filter (3).

5. The duct ventilation structure for a civil defense installation according to claim 4, wherein: The movable plate (6) is fixed to the mounting plate (4) by a snap-fit ​​assembly. The snap-fit ​​assembly includes a snap-fit ​​ring (15) disposed on the end face of the movable plate (6). Multiple fixing rods (16) are fixedly connected to the end face of the mounting plate (4). Multiple snap-fit ​​grooves (17) are provided on the snap-fit ​​ring (15). The fixing rods (16) slide on the inner side of the snap-fit ​​grooves (17). One end of the snap-fit ​​grooves (17) protrudes. A notch is provided on the outer wall of the fixing rods (16). The protruding part of the snap-fit ​​grooves (17) is snapped into the notch of the fixing rods (16).

6. The duct ventilation structure for a civil defense installation according to claim 5, wherein: One end of the snap ring (15) is slidably connected to the insert rod (18), and the insert rod (18) is inserted into the inner side of the mounting plate (4). A spring (19) is fixedly connected between the snap ring (15) and the insert rod (18).

7. The duct ventilation structure for civil defense projects according to claim 1, characterized in that: The bottom of the dust filter box (2) is provided with a cleaning outlet (20), which is normally closed.

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