Automatic net changing device for civil air defense ventilation pipe

Abstract

The utility model relates to the technical field of civil air defense ventilation, and discloses a civil air defense ventilation pipe automatic net changing device which comprises a pipeline, frames are fixedly installed on the two sides of the pipeline, installation grooves are formed in the inner walls of the frames and the pipeline, toothed plates are installed on the inner walls of the installation grooves in a sliding mode, and first sealing clamping frames are fixedly installed on the upper portions of the toothed plates. A second sealing clamping frame is fixedly mounted on the upper portion of the toothed plate, a mounting frame is fixedly mounted on the inner walls of the first sealing clamping frame and the second sealing clamping frame, a filter screen is arranged on the front face of the mounting frame, a motor is fixedly mounted on the lower portion of the pipeline, and a gear is fixedly mounted at the output end of the motor. Through the arrangement of the mounting groove, the first sealing clamping frame, the second sealing clamping frame, the mounting frame, the filter screen, the motor, the gear and the toothed plate, the effects of automatically replacing the filter screen and ensuring pipeline filtration are achieved, frequent manual replacement by workers is not needed, and the burden of the workers can be relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of civil air defense ventilation, in particular to an automatic net changing device for a civil air defense ventilation pipe. Background Art

[0002] Civil air defense is necessary for building a safe city. At the same time, civil air defense projects are also a place for many citizens to escape the heat in summer. They are important infrastructure in urban construction. Civil air defense projects are located underground and need to have perfect ventilation functions. Ventilation ducts are generally equipped with filters to filter the air. However, the filters in existing civil air defense ventilation ducts are all single fixed installations, and multiple filters cannot be automatically replaced. Single installed filters require frequent replacement by staff, which will increase the workload of staff and reduce the filtering effect of the duct. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides an automatic screen changing device for civil air defense ventilation pipes, which can automatically replace the filter screen to ensure the filtering effect of the pipe. There is no need for staff to frequently replace it manually, which can reduce the burden on the staff and solve the problems raised in the above-mentioned background technology.

[0005] (II) Technical solution

[0006] In order to achieve the above-mentioned purpose, the following technical scheme is provided: an automatic screen changing device for civil air defense ventilation pipes, comprising a pipe, frame fixedly installed on both sides of the pipe, mounting grooves are provided on the frame and the inner wall of the pipe, a tooth plate is slidably installed on the inner wall of the mounting groove, a first sealing card frame is fixedly installed on the upper part of the tooth plate, a second sealing card frame is fixedly installed on the upper part of the tooth plate, a mounting frame is fixedly installed on the inner walls of the first sealing card frame and the second sealing card frame, a filter screen is arranged on the front of the mounting frame, a motor is fixedly installed on the lower part of the pipe, and a gear is fixedly installed on the output end of the motor.

[0007] Preferably, the outer sides of the first sealing card frame and the second sealing card frame are slidably connected to the inner wall of the mounting groove, and the outer side of the gear is meshingly connected to the outer side of the gear plate.

[0008] Preferably, the mounting frame has mounting holes at the four corners, the filter screen has positioning rods at the four corners on the back, the filter screen has an insert block on the back, and the mounting frame has insert holes on the surface that match the insert block.

[0009] Preferably, a threaded barrel is fixedly mounted on the back of the mounting bracket, and a threaded rod is mounted on the inner thread of the threaded barrel.

[0010] Preferably, a limiting hole is provided on one side where the insertion blocks are close to each other.

[0011] Preferably, a sealing door is installed on the outer side of the frame.

[0012] (III) Beneficial effects

[0013] Compared with the prior art, the utility model provides an automatic screen changing device for civil air defense ventilation pipes, which has the following beneficial effects:

[0014] 1. The automatic screen changing device for civil air defense ventilation pipes can automatically replace the filter screen to ensure the effect of pipeline filtering through the arrangement of the mounting groove, the first sealing card frame, the second sealing card frame, the mounting frame, the filter screen, the motor, the gear and the tooth plate. The staff does not need to frequently replace the filter screen manually, which can reduce the burden on the staff.

[0015] 2. The automatic screen changing device for the civil air defense ventilation duct achieves the goal of conveniently replacing the filter screen and saving the physical strength of the staff through the setting of the installation hole, the positioning rod, the insertion hole, the insertion block, the sealing door, the threaded rod, the threaded cylinder and the limit hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the front structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the upper cross-sectional structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the bottom structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the back structure of the utility model;

[0020] Figure 5 This is a schematic diagram of the mounting frame and related structures of the utility model.

[0021] In the figure: 1. pipeline; 2. frame; 3. installation groove; 4. first sealing card frame; 5. second sealing card frame; 6. installation frame; 7. filter screen; 8. installation hole; 9. positioning rod; 10. motor; 11. gear; 12. tooth plate; 13. installation hole; 14. installation block; 15. sealing door; 16. threaded rod; 17. threaded cylinder; 18. limit hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments, not all of the embodiments. Based on the embodiments in the embodiments, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection.

[0023] Embodiment 1:

[0024] See also Figure 1-5 , including a pipeline 1, frames 2 are fixedly installed on both sides of the pipeline 1, mounting grooves 3 are opened on the inner walls of the frame 2 and the pipeline 1, a tooth plate 12 is slidably installed on the inner wall of the mounting groove 3, a first sealing card frame 4 is fixedly installed on the upper part of the tooth plate 12, a second sealing card frame 5 is fixedly installed on the upper part of the tooth plate 12, a mounting frame 6 is fixedly installed on the inner walls of the first sealing card frame 4 and the second sealing card frame 5, a filter screen 7 is arranged on the front of the mounting frame 6, a motor 10 is fixedly installed on the lower part of the pipeline 1, and a gear 11 is fixedly installed on the output end of the motor 10.

[0025] Preferably, the outer sides of the first sealing card frame 4 and the second sealing card frame 5 are slidably connected to the inner wall of the mounting groove 3 , and the outer side of the gear 11 is meshingly connected to the outer side of the gear plate 12 .

[0026] Working principle: external air enters the underground civil air defense space through pipe 1, and the incoming air can be filtered through the filter screen 7 in pipe 1. The filter screen 7 is an activated carbon filter material, which can filter dust and some harmful substances in the air. After a filter screen 7 has been used for a period of time, the start motor 10 drives the gear 11 to rotate. After the gear 11 rotates, it will move with the tooth plate 12, and the tooth plate 12 will move with the first sealing card frame 4 and the second sealing card frame 5, so that the first sealing card frame 4 is moved into the right side frame 2, and then the second sealing card frame 5 will be stuck in the pipe 1, and the first sealing card frame 4 and the second sealing card frame 5 have sealing layers on both sides, which can seal the pipe 1, thereby achieving the automatic replacement of the filter screen 7 to ensure the filtering effect of the pipe 1, without the need for the staff to frequently replace it manually, which can reduce the burden on the staff.

[0027] Embodiment 2:

[0028] See also Figure 1-5 The surface of the mounting frame 6 is provided with mounting holes 8 at the four corners, the back side of the filter screen 7 is fixedly provided with positioning rods 9, the back side of the filter screen 7 is fixedly provided with an insertion block 14, and the surface of the mounting frame 6 is provided with an insertion hole 13 matched with the insertion block 14.

[0029] Preferably, a threaded barrel 17 is fixedly mounted on the back of the mounting bracket 6 , and a threaded rod 16 is mounted on the inner thread of the threaded barrel 17 .

[0030] Preferably, a limiting hole 18 is provided on one side of the insertion blocks 14 that are close to each other.

[0031] Preferably, a sealing door 15 is installed on the outer side of the frame 2 .

[0032] Working principle: When removing the filter 7, open the sealing door 15 of the frame 2, rotate the threaded rod 16, and with the cooperation of the threaded tube 17, the threaded rod 16 can move downward, and the threaded rod 16 can leave the limiting hole 18 of the insert block 14. At this time, the installation restriction of the filter 7 is released, so that the filter 7 can be removed from the front. When installing, install the positioning rods 9 at the four corners of the filter 7 into the installation holes 8, install the insert block 14 into the insert hole 13, and then rotate the threaded rod 16 on the back so that the threaded rod 16 is inserted into the limiting hole 18, thereby restricting the installation of the filter 7, thereby facilitating the installation and removal of the filter 7 by the staff.

[0033] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit thereof, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic screen changing device for civil air defense ventilation pipes, comprising a pipe (1), characterized in that: Frames (2) are fixedly mounted on both sides of the pipeline (1); mounting grooves (3) are provided on the inner walls of the frame (2) and the pipeline (1); a tooth plate (12) is slidably mounted on the inner walls of the mounting grooves (3); a first sealing card frame (4) is fixedly mounted on the upper part of the tooth plate (12); a second sealing card frame (5) is fixedly mounted on the upper part of the tooth plate (12); mounting frames (6) are fixedly mounted on the inner walls of the first sealing card frame (4) and the second sealing card frame (5); a filter screen (7) is arranged on the front of the mounting frame (6); a motor (10) is fixedly mounted on the lower part of the pipeline (1); and a gear (11) is fixedly mounted on the output end of the motor (10).

2. The automatic screen changing device for civil air defense ventilation pipe according to claim 1 is characterized in that: The outer sides of the first sealing card frame (4) and the second sealing card frame (5) are slidably connected to the inner wall of the mounting groove (3), and the outer side of the gear (11) is meshingly connected to the outer side of the toothed plate (12).

3. The automatic screen changing device for civil air defense ventilation pipe according to claim 1 is characterized in that: The surface of the mounting frame (6) is provided with mounting holes (8) at four corners, the back side of the filter screen (7) is fixedly provided with positioning rods (9), the back side of the filter screen (7) is fixedly provided with an insertion block (14), and the surface of the mounting frame (6) is provided with an insertion hole (13) adapted to the insertion block (14).

4. The automatic screen changing device for civil air defense ventilation pipe according to claim 1 is characterized in that: A threaded barrel (17) is fixedly mounted on the back of the mounting frame (6), and a threaded rod (16) is mounted on the internal threads of the threaded barrel (17).

5. The automatic screen changing device for civil air defense ventilation pipe according to claim 3 is characterized in that: A limiting hole (18) is provided on one side of the insertion blocks (14) that are close to each other.

6. The automatic screen changing device for civil air defense ventilation pipe according to claim 1 is characterized in that: A sealing door (15) is installed on the outer side of the frame (2).

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