Ventilation structure of underground emergency shelter

Abstract

The utility model relates to the technical field of ventilation devices, in particular to an underground emergency shelter ventilation structure which comprises a ventilation pipe, a protection assembly and a driving assembly, and the protection assembly is arranged at the air inlet end of the ventilation pipe and comprises fan blades, a rotating shaft, a worm gear, a worm and a protection cover. The ventilation structure of the underground emergency shelter comprises a ventilation pipe, a fan blade is arranged on the ventilation pipe, a rotating shaft penetrating through the ventilation pipe is arranged on the left side and the right side of the fan blade, a protective cover is arranged on one side of the ventilation pipe, and the rotating shaft extends into the protective cover and is provided with a worm wheel. External objects are prevented from entering or interfering, meanwhile, internal components are protected, stable operation and use safety of the ventilation system are ensured, mechanical structure driving is adopted, use is stable, meanwhile, the device has the mistaken opening prevention effect, and non-staff are prevented from opening or closing the ventilation structure by mistake.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation devices, in particular to a ventilation structure for an underground emergency shelter. Background Art

[0002] Ventilation openings need to be reasonably arranged in an underground emergency shelter, and air inlets and outlets are arranged at different positions to keep the air flowing. The positions of the ventilation openings should consider the best path of air flow to ensure that air can effectively flow through the entire shelter;

[0003] When the shelter is not in use, it is necessary to ensure the sealing of its ventilation openings to prevent equipment from aging and being damaged, as well as other foreign objects from entering. If electric control is used, the equipment is not convenient to use in the case of unstable power supply. Content of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the utility model provides a ventilation structure for an underground emergency shelter.

[0006] (2) Technical Solutions

[0007] To achieve the above object, the utility model provides the following technical solution: A ventilation structure for an underground emergency shelter, including a ventilation pipe, a protection component and a driving component. The protection component is arranged at the air inlet end of the ventilation pipe. The protection component includes a fan blade, a rotating shaft, a worm gear, a worm and a protective cover. The rotating shafts penetrating through the ventilation pipe are arranged on the left and right sides of the fan blade. A protective cover is arranged on one side of the ventilation pipe. The rotating shaft extends into the protective cover and is provided with the worm gear. The worm is meshed with several groups of worm gears. A partition is also arranged in the protective cover. The worm penetrates through the partition below. A driving component for driving the worm is arranged on the bottom wall of the protective cover. The driving component includes a spring, a support ring, a driving rod and a bearing. The upper and lower ends of the spring are respectively connected with the protective cover and the support ring. A bearing is arranged below the support ring. The outer ring of the bearing is connected with the support ring. The driving rod is connected with the inner ring of the bearing. Friction surfaces are arranged above the driving rod and below the worm. The driving rod penetrates through the protective cover above and is adapted to the worm.

[0008] To facilitate driving the driving rod, the utility model is improved in that a handle is arranged below the driving rod.

[0009] To ensure the stability of the support ring, the utility model is improved in that a guide rod penetrating through the bottom wall of the protective cover is further arranged above the support ring.

[0010] Preferably, auxiliary pieces are arranged at the upper and lower ends of the fan blade.

[0011] Preferably, the auxiliary sheet is made of silica gel material.

[0012] Preferably, a sealing strip is provided on the auxiliary sheet.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the present utility model provides a ventilation structure for an underground emergency shelter, which has the following beneficial effects:

[0015] The ventilation structure of the underground emergency shelter can effectively seal the ventilation pipe through the combined design of the fan blade, worm gear and worm, prevent external objects from entering or interfering, and at the same time protect the internal components, ensure the stable operation and use safety of the ventilation system. It is driven by a mechanical structure, has stable use, and at the same time the device has an anti-misoperation effect to prevent non-staff from accidentally opening or closing the ventilation structure. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 is a schematic diagram of the structure of the present utility model without a protective cover;

[0018] Figure 3 is a partial schematic diagram of the structure of the present utility model;

[0019] Figure 4 is the structure of the present utility model Figure 3 in a partially enlarged schematic diagram.

[0020] In the figure: 1, ventilation pipe; 2, fan blade; 3, rotating shaft; 4, worm gear; 5, worm; 6, protective cover; 7, partition board; 8, spring; 9, support ring; 10, driving rod; 11, bearing; 12, handle; 13, guide rod; 14, auxiliary sheet; 15, sealing strip. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1-4, An underground emergency shelter ventilation structure, including a ventilation pipe 1, a protection component, and a driving component. The air inlet end of the ventilation pipe 1 is provided with the protection component. The protection component includes a fan blade 2, a rotating shaft 3, a worm gear 4, a worm 5, and a protective cover 6. The rotating shaft 3 penetrating through the ventilation pipe 1 is arranged on the left and right sides of the fan blade 2. The protective cover 6 is arranged on one side of the ventilation pipe 1. The rotating shaft 3 extends into the protective cover 6 and is provided with the worm gear 4. The worm 5 meshes with several groups of the worm gears 4. A partition 7 is also arranged in the protective cover 6. The worm 5 penetrates through the partition 7 downward. The bottom wall of the protective cover 6 is provided with a driving component for driving the worm 5. The driving component includes a spring 8, a support ring 9, a driving rod 10, and a bearing 11. The upper and lower ends of the spring 8 are respectively connected to the protective cover 6 and the support ring 9. The bearing 11 is arranged below the support ring 9. The outer ring of the bearing 11 is connected to the support ring 9. The driving rod 10 is connected to the inner ring of the bearing 11. Friction surfaces are arranged above the driving rod 10 and below the worm 5. The driving rod 10 penetrates through the protective cover 6 upward and is adapted to the worm 5.

[0023] During the actual use process, initially, the fan blade 2 is in a well-known state. At this time, the fan blade 2 closes the ventilation pipe 1. When it is necessary to open the ventilation pipe 1, the protective cover 6 fits the ventilation pipe 1. By pressing the support ring 9 with the driving rod 10, the spring 8 is compressed. The driving rod 10 is in frictional contact with the worm 5. The support ring 9 and the driving rod 10 are connected through the bearing 11. The driving rod 10 drives the worm 5 to rotate. The worm 5 drives the worm gear 4 to rotate. The rotating shaft 3 drives the fan blade 2 to rotate, controlling the opening of the ventilation pipe 1. When it is not necessary to drive the worm 5, the spring 8 drives the support ring 9 to reset. Only by rotating the driving rod 10, the worm 5 cannot be driven to rotate, having an anti-misopening effect.

[0024] During the actual use process, if the driving rod 10 is held by hand, it is easy to slip. Therefore, a handle 12 is arranged below the driving rod 10.

[0025] If only guided by the driving rod 10 and supported by the spring 8, it is easy to have an unstable support situation of the support ring 9. Therefore, a guide rod 13 penetrating through the bottom wall of the protective cover 6 is also arranged above the support ring 9 to ensure the stable lifting of the support ring 9.

[0026] In this embodiment, auxiliary pieces 14 are arranged at the upper and lower ends of the fan blade 2. The auxiliary pieces 14 are made of silica gel material. Sealing strips 15 are arranged on the auxiliary pieces 14, while ensuring its sealing performance and preventing the edges of the auxiliary pieces 14 from being worn and resulting in poor sealing performance.

[0027] To describe in detail the possible application scenarios, technical principles, specific implementable solutions, achievable objectives and effects of the present application, the following will be described in detail with reference to the specific examples listed and in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and therefore are only used as examples and cannot be used to limit the protection scope of the present application.

[0028] As used herein, the mention of "embodiment" means that the specific features, structures or characteristics described in connection with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" that appears in various positions in the specification does not necessarily refer to the same embodiment, nor is it particularly limited to the independence or relevance with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the technical features mentioned in each embodiment can be combined in any way to form the corresponding implementable technical solution.

[0029] Unless otherwise defined, the meanings of the technical terms used herein are the same as those commonly understood by those skilled in the technical field to which the present application belongs; the use of the relevant terms herein is only for describing specific embodiments and is not intended to limit the present application.

[0030] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ventilation structure for an underground emergency shelter, comprising a ventilation pipe (1), a protection component and a drive component, characterized in that: The protective component is arranged at the air inlet end of the ventilation pipe (1), and the protective component comprises a fan blade (2), a rotating shaft (3), a worm wheel (4), a worm (5) and a protective cover (6). The fan blade (2) is provided with a rotating shaft (3) penetrating the ventilation pipe (1) on both sides. The ventilation pipe (1) is provided with the protective cover (6) on one side. The rotating shaft (3) extends into the protective cover (6) and is provided with the worm wheel (4). The worm (5) meshes with a plurality of groups of the worm wheels (4). A partition (7) is also arranged in the protective cover (6). The worm (5) passes through the partition (7) below. The bottom wall of the protective cover (6) is provided with a plurality of worm wheels (4). A driving assembly for driving the worm (5) is provided, and the driving assembly comprises a spring (8), a support ring (9), a driving rod (10) and a bearing (11). The upper and lower ends of the spring (8) are respectively connected to the protective cover (6) and the support ring (9). A bearing (11) is provided below the support ring (9). The outer ring of the bearing (11) is connected to the support ring (9). The driving rod (10) is connected to the inner ring of the bearing (11). Friction surfaces are provided below the worm (5) and above the driving rod (10). The top of the driving rod (10) passes through the protective cover (6) and is adapted to the worm (5).

2. The underground emergency shelter ventilation structure according to claim 1, characterized in that: A handle (12) is provided below the driving rod (10).

3. The underground emergency shelter ventilation structure according to claim 2, characterized in that: A guide rod (13) is also provided above the support ring (9) and passes through the bottom wall of the protective cover (6).

4. The underground emergency shelter ventilation structure according to claim 3, characterized in that: Auxiliary plates (14) are provided at the upper and lower ends of the fan blade (2).

5. The underground emergency shelter ventilation structure according to claim 4, characterized in that: The auxiliary sheet (14) is made of silica gel.

6. The underground emergency shelter ventilation structure according to claim 5, characterized in that: The auxiliary sheet (14) is provided with a sealing strip (15).

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