Automatic net changing device for civil air defense ventilation pipe

Abstract

The utility model discloses an automatic net changing device for a civil air defense ventilation pipe, which relates to the technical field of civil air defense ventilation pipes and comprises a ventilation pipe main body, a lateral fixing block, a fixed mounting cover plate and a ventilation pipe protection dustproof net. A groove gear is rotationally connected to the exterior of the fixed mounting cover plate, the first rotating disc is movably connected with the rotating fixing block, a collecting sliding groove is formed in the exterior of the ventilation pipeline body, and an automatic cleaning assembly is fixedly mounted on the exterior of the fixed mounting cover plate. In order to solve the problem that when a dustproof net of the civil air defense ventilation pipe is replaced, a recyclable protective net is tedious to use, automatic net replacement is achieved through a ventilation system in the civil air defense pipeline, the dustproof net can be automatically cleaned in the net replacement process, dust is collected, and therefore follow-up maintenance is facilitated, and the civil air defense ventilation pipe is convenient to use. Therefore, the service life of equipment is prolonged, and maintenance cost is reduced.

Description

Technical Field

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

[0002] Ventilation ducts are pipes used in ventilation systems in buildings or other facilities to transport air, adjust temperature and humidity, and discharge harmful gases. In buildings, ventilation ducts are usually made of materials such as metal or plastic, which can transport fresh air to areas that need ventilation and discharge waste gas at the same time. Civil air defense ventilation ducts refer to ventilation systems used in civil air defense projects. Their design and application are intended to provide ventilation and discharge of air inside civil air defense facilities to ensure that personnel have sufficient oxygen supply and harmful gas discharge in emergency situations.

[0003] When replacing the dust screen of the existing civil air defense ventilation duct, it is necessary to shut down the ventilation system, remove the old dust screen, clean the ventilation duct opening, install a new dust screen, inspect and test, and restore the ventilation system. Therefore, the replacement of the dust screen of the civil air defense ventilation duct is very cumbersome. And because the civil air defense ventilation duct is generally set in a relatively hidden place, the replacement of the dust screen may take more time and effort, especially in a small space. The operation is more difficult. Moreover, in the process of replacing the dust screen, if the operation is improper or the new dust screen is not installed tightly, it may affect the normal operation of the ventilation system and reduce the ventilation effect. In order to solve the above problems, an automatic screen changing device for civil air defense ventilation duct is proposed. Utility Model Content

[0004] The purpose of the utility model is to solve the problem of cumbersome use of repeatedly recycled protective nets when replacing dustproof nets of civil air defense ventilation ducts, and to realize automatic net replacement through the ventilation system in the civil air defense ducts. The dustproof nets can be automatically cleaned and dust collected during the net replacement process, thereby facilitating subsequent maintenance. Automatic net replacement can reduce manual operations, save time and labor costs, and automatic cleaning can ensure that the dustproof nets are always kept clean and will not be blocked due to accumulation of a large amount of dust due to long-term use. Regular automatic cleaning of the dustproof nets can keep the ventilation ducts unobstructed, ensure the normal operation of the ventilation system, and avoid a decrease in ventilation effect due to blockage of the dustproof nets. Regular cleaning of the dustproof nets and collection of dust can reduce dust corrosion and damage to the ventilation equipment, thereby extending the service life of the equipment and reducing maintenance costs.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] An automatic screen changing device for a civil air defense ventilation pipe comprises a ventilation duct main body, a side fixing block, a fixed installation cover plate and a ventilation duct protective dustproof net, characterized in that the side fixing block is movably connected with a dust collecting groove on the outside, the fixed installation cover plate is rotatably connected with a groove gear on the outside, the ventilation duct protective dustproof net is fixedly installed with a rotating fixing block on the outside, the fixed installation cover plate is rotatably connected with a No. 1 rotating disk on the outside, the No. 1 rotating disk is movably connected with the rotating fixing block, the ventilation duct main body is provided with a collecting sliding groove on the outside, the fixed installation cover plate is fixedly installed with an automatic cleaning component on the outside, and the automatic cleaning component comprises a cleaning fan blade, a gear track and a No. 1 rotating shaft;

[0007] A second fixing rod is fixedly installed on the outside of the fixed installation cover plate, and an automatic screen changing assembly is fixedly installed on the outside of the first rotating disc. The automatic screen changing assembly includes a first right-angle gear, a second rotating shaft, a third rotating shaft, a fourth right-angle gear and a fourth rotating shaft.

[0008] Preferably, the first rotating shaft rotates outside the dust collecting groove, the gear track is fixedly installed outside the first rotating shaft, and the groove gear is meshed with the rotating fixed block.

[0009] Preferably, the gear track is fixedly mounted on the outside of the first rotating shaft, the gear track is meshed with the groove gear, and the cleaning fan blade is in contact with the ventilation duct protective dustproof net.

[0010] Preferably, the dust collecting groove slides outside the collecting sliding groove, the ventilation duct body is rotatably connected to the outside of the fourth rotating shaft, the first right-angle gear is fixedly installed on the outside of the fourth rotating shaft, the fourth right-angle gear is fixedly installed on the outside of the third rotating shaft, and the first right-angle gear is meshed with the fourth right-angle gear.

[0011] Preferably, the second rotating shaft rotates outside the second fixing rod, a second right-angle gear is fixedly installed outside the second rotating shaft, a third right-angle gear is fixedly installed outside the third rotating shaft, and the third right-angle gear is meshed with the second right-angle gear.

[0012] Preferably, rotating blades are fixedly mounted on the outside of the second rotating shaft, and the rotating blades are in multiple groups and distributed in a circular array.

[0013] Preferably, the fixed installation cover plate is fixedly installed on the outside of the ventilation duct main body, and the ventilation duct protective dustproof net is movable on the inner wall of the side fixed block.

[0014] Preferably, the number of the number one rotating discs is two and they are symmetrically distributed.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. In the utility model, by setting an automatic cleaning component, the automatic cleaning component can regularly clean the dust and debris accumulated on the dustproof net, ensure the ventilation duct is unobstructed, maintain a good ventilation effect, and regularly clean the dustproof net to reduce the corrosion and damage of dust to the ventilation equipment, thereby extending the service life of the ventilation system and reducing maintenance costs. Keeping the dustproof net clean can reduce ventilation system failures caused by blockage and improve the stability and reliability of the system. The automatic cleaning component can reduce the workload of manual cleaning of the dustproof net, save labor costs, and can achieve regular and quantitative cleaning to improve efficiency. By regularly cleaning the dustproof net, the accumulation of indoor dust and pollutants can be reduced, the indoor air quality can be improved, and it is beneficial to the health of residents;

[0017] 2. In the utility model, by setting an automatic net-changing component and utilizing wind power to achieve automatic net-changing, manual operation can be avoided, and the dust net of the ventilation duct can be automatically replaced, saving labor costs and time. The automatic net-changing system driven by wind power can automatically replace the dust net according to the set time interval or ventilation demand to maintain the normal operation of the ventilation system. Regular replacement of the dust net can keep the ventilation duct unobstructed, ensure good ventilation effect, and avoid poor ventilation caused by blockage of the dust net, which affects the indoor air quality. Regular replacement of the dust net can reduce the damage of dust to the ventilation equipment, extend the service life of the equipment, and reduce maintenance costs. The automatic net-changing system driven by wind power can quickly and effectively complete the replacement of the dust net, improve the efficiency of net replacement, and ensure the continuous operation of the ventilation system.

[0018] 3. In the utility model, the dust collection groove is designed to collect the automatically cleaned dust, which is convenient for later maintenance. By timely cleaning and collecting the dust on the dustproof net, the efficient operation of the ventilation system can be ensured, and the reduction of ventilation effect caused by dust blockage can be avoided. Regular cleaning and collection of dust on the dustproof net can reduce the corrosion and damage of dust to the ventilation equipment, thereby extending the service life of the equipment. By cleaning the dust on the dustproof net, the dust and pollutant content in the indoor air can be reduced, the indoor air quality can be improved, which is beneficial to the health of the residents. The centralized collection of dust on the dustproof net can facilitate subsequent processing and cleaning work, and reduce environmental pollution during the cleaning process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a first structural schematic diagram of the utility model;

[0021] Figure 3 It is a second structural schematic diagram of the utility model;

[0022] Figure 4 This is a third structural schematic diagram of the utility model;

[0023] Figure 5 This is a fourth structural schematic diagram of the utility model;

[0024] Figure 6 This is a fifth structural schematic diagram of the utility model;

[0025] Figure 7 For this utility model Figure 2 A schematic diagram of the structure enlargement in the middle;

[0026] Figure 8 For this utility model Figure 4 A magnified schematic diagram of the structure at B in the middle;

[0027] Fig. 9 For this utility model Figure 6 Enlarged schematic diagram of the structure at point C in the middle.

[0028] In the figure: 1. Ventilation duct body; 2. Side fixing block; 3. Fixed installation cover; 4. Ventilation duct protective dust net; 5. Dust collecting groove; 6. No. 1 rotating disc; 7. Collection sliding groove; 8. No. 2 fixing rod; 9. Rotating fan blades; 10. No. 1 right angle gear; 11. Groove gear; 12. Cleaning fan blades; 13. Rotating fixing block; 14. Gear track; 15. No. 1 rotating shaft; 16. No. 2 rotating shaft; 17. No. 2 right angle gear; 18. No. 3 right angle gear; 19. No. 3 rotating shaft; 20. No. 4 right angle gear; 21. No. 4 rotating shaft.

[0029] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model 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 of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Example: Figure 1-9As shown, the utility model provides an automatic screen changing device for a civil air defense ventilation pipe, comprising a ventilation duct body 1, a lateral fixed block 2, a fixed installation cover plate 3 and a ventilation duct protective dustproof net 4, the lateral fixed block 2 is externally movably connected with a dust collecting groove 5, the fixed installation cover plate 3 is externally rotatably connected with a groove gear 11, the ventilation duct protective dustproof net 4 is externally fixedly installed with a rotating fixed block 13, the fixed installation cover plate 3 is externally rotatably connected with a No. 1 rotating disc 6, the No. 1 rotating disc 6 is movably connected with the rotating fixed block 13, a collecting sliding groove 7 is provided on the outside of the ventilation duct body 1, and an automatic cleaning component is fixedly installed on the outside of the fixed installation cover plate 3, and the automatic cleaning component comprises a cleaning fan blade 12, a gear track 14 and a No. 1 rotating shaft 15;

[0032] A second fixing rod 8 is fixedly installed outside the fixed installation cover plate 3 , and an automatic screen changing assembly is fixedly installed outside the first rotating disc 6 . The automatic screen changing assembly includes a second rotating shaft 16 , a third rotating shaft 19 and a fourth rotating shaft 21 .

[0033] The number one rotating shaft 15 rotates outside the dust collecting groove 5, the gear track 14 is fixedly installed outside the number one rotating shaft 15, the groove gear 11 is meshed with the rotating fixed block 13, the gear track 14 is fixedly installed outside the number one rotating shaft 15, the gear track 14 is meshed with the groove gear 11, the cleaning fan blades 12 are fitted with the ventilation duct protective dustproof net 4, the dust collecting groove 5 slides outside the collecting sliding groove 7, the outside of the ventilation duct main body 1 is rotatably connected with the number four rotating shaft 21, the number one right-angle gear 10 is fixedly installed outside the number four rotating shaft 21, the number four right-angle gear 20 is fixedly installed outside the number three rotating shaft 19, and the number one right-angle gear 10 is meshed with the number four right-angle gear 20.

[0034] By adopting the above technical solution, the rotation of the ventilation duct protective dust screen 4 can drive the rotating fixed block 13 to rotate, and finally the cleaning fan blades 12 can be driven to rotate through the differential gear set to achieve automatic cleaning of the dust screen.

[0035] The second rotating shaft 16 rotates on the outside of the second fixed rod 8, and a second right-angle gear 17 is fixedly installed on the outside of the second rotating shaft 16. A third right-angle gear 18 is fixedly installed on the outside of the third rotating shaft 19. The third right-angle gear 18 is meshed with the second right-angle gear 17. The second rotating shaft 16 is fixedly installed with rotating blades 9. The number of rotating blades 9 is multiple groups and distributed in a circular array. The fixed cover plate 3 is fixedly installed on the outside of the ventilation duct main body 1. The ventilation duct protective dustproof net 4 is slidably connected to the inner wall of the side fixed block 2. The number of the No. 1 rotating disk 6 is two groups and is symmetrically distributed.

[0036] By adopting the above technical solution, it is possible to realize that the wind force of the duct drives the second rotating shaft 16 to rotate, and the rotation of the second rotating shaft 16 drives the automatic replacement of the ventilation duct protective dustproof net 4.

[0037] Working principle: When the ventilation system causes the air-defense duct to be blown by wind, the wind blows the rotating fan blades 9 to drive the No. 2 rotating shaft 16 to rotate. Since the No. 2 rotating shaft 16 is fixedly connected to the No. 2 right-angle gear 17, the No. 2 rotating shaft 16 rotates and drives the No. 2 right-angle gear 17 to rotate. Since the No. 2 right-angle gear 17 is meshed with the No. 3 right-angle gear 18, the No. 2 right-angle gear 17 rotates and drives the No. 3 right-angle gear 18 to rotate. Since the No. 3 right-angle gear 18 is fixedly connected to the No. 3 rotating shaft 19, the No. 3 right-angle gear 18 rotates and drives the No. 3 rotating shaft 19 to rotate. Since the No. 3 rotating shaft 19 is fixedly connected to the No. 4 right-angle gear 20, the No. 3 rotating shaft 19 rotates and drives the No. 4 right-angle gear 20. The fourth right-angle gear 20 rotates, and because the fourth right-angle gear 20 is meshed with the first right-angle gear 10, the fourth right-angle gear 20 rotates and drives the first right-angle gear 10 to rotate. Since the first right-angle gear 10 is fixedly connected to the fourth rotating shaft 21, the first right-angle gear 10 rotates and drives the fourth rotating shaft 21 to rotate. Since the fourth rotating shaft 21 is fixedly connected to the first rotating disc 6, the fourth rotating shaft 21 rotates and drives the first rotating disc 6 to rotate. Finally, since the first rotating disc 6 fits with the ventilation duct protective dustproof net 4, the first rotating disc 6 rotates and drives the ventilation duct protective dustproof net 4 to rotate, and finally the dustproof net is automatically replaced.

[0038] At the same time, when the ventilation duct protection dustproof net 4 rotates, since the ventilation duct protection dustproof net 4 is fixedly connected with the rotating fixed block 13, the ventilation duct protection dustproof net 4 rotates and drives the rotating fixed block 13 to move. Since the rotating fixed block 13 is meshed with the groove gear 11, the rotating fixed block 13 rotates and drives the groove gear 11 to rotate. Since the groove gear 11 is meshed with the gear track 14, the rotation of the groove gear 11 drives the gear track 14 to rotate. Since the gear track 14 is fixedly connected with the No. 1 rotating shaft 15, the rotation of the gear track 14 drives the No. 1 rotating shaft 15 to rotate. Since the No. 1 rotating shaft 15 is fixedly connected with the cleaning fan blades 12, the rotation of the No. 1 rotating shaft 15 drives the cleaning fan blades 12 to rotate. Finally, since the cleaning fan blades 12 are in contact with the ventilation duct protection dustproof net 4, the ventilation duct protection dustproof net 4 moves, drives the cleaning fan blades 12 to rotate, and makes the cleaning fan blades 12 clean the ventilation duct protection dustproof net 4 and finally completes the cleaning work of the dustproof net.

[0039] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An automatic screen changing device for a civil air defense ventilation pipe, comprising a ventilation duct body (1), a side fixing block (2), a fixed installation cover plate (3) and a ventilation duct protective dust screen (4), characterized in that: The side fixed block (2) is movably connected to a dust collecting groove (5) on the outside, the fixed installation cover plate (3) is rotatably connected to a groove gear (11) on the outside, the ventilation duct protection dustproof net (4) is fixedly installed with a rotating fixed block (13) on the outside, the fixed installation cover plate (3) is rotatably connected to a No. 1 rotating disk (6) on the outside, the No. 1 rotating disk (6) is movably connected to the rotating fixed block (13), the outside of the ventilation duct body (1) is provided with a collecting sliding groove (7), the outside of the fixed installation cover plate (3) is fixedly installed with an automatic cleaning component, the automatic cleaning component comprises a cleaning fan blade (12), a gear track (14) and a No. 1 rotating shaft (15); A second fixed rod (8) is fixedly mounted on the outside of the fixed mounting cover plate (3), and an automatic screen changing assembly is fixedly mounted on the outside of the first rotating disc (6), wherein the automatic screen changing assembly comprises a first right angle gear (10), a second rotating shaft (16), a third rotating shaft (19), a fourth right angle gear (20) and a fourth rotating shaft (21).

2. The automatic screen changing device for civil air defense ventilation pipes according to claim 1, characterized in that: The first rotating shaft (15) rotates outside the dust collecting groove (5), the gear track (14) is fixedly mounted outside the first rotating shaft (15), and the groove gear (11) is meshed with the rotating fixed block (13).

3. The automatic screen changing device for civil air defense ventilation pipes according to claim 1, characterized in that: The gear track (14) is fixedly mounted on the outside of the first rotating shaft (15), the gear track (14) is meshed with the groove gear (11), and the cleaning blade (12) is in contact with the ventilation duct protective dustproof net (4).

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