CN221195457U - Civil air defense ventilation fan - Google Patents

Abstract

The utility model relates to the field of fans, in particular to a civil air-defense ventilation fan, wherein an air inlet end of a box body is provided with an air inlet pipe, an air outlet end of the box body is provided with an exhaust pipe, the front end of the air inlet pipe is fixedly provided with a positioning seat, the front end of the positioning seat is provided with a frame, the rear end of the frame is provided with a positioning shaft which is rotationally connected with the positioning seat, the middle part of the frame is provided with a detachable filter plate, the front end of the frame is provided with a fixed block, impurities in natural wind can be blocked by the filter plate in the suction process of the natural wind, the natural wind can be filtered through the filter plate, the impurities are prevented from being adsorbed on fan blades, the box body is prevented from being damaged, and a limiting effect can be provided for the frame on the positioning seat through the provided positioning plate, so that the frame is more firmly installed.

Description

Civil air defense ventilation fan

Technical Field

The utility model relates to the field of fans, in particular to a civil air defense ventilation fan.

Background

As is well known, people's air defense system is usually arranged underground, so that the ventilation of the system is particularly important, and in order to ensure the ventilation quantity in the people's air defense system, a ventilation fan is usually arranged at the junction of the system and the outside, and can introduce the outside fresh air into the people's air defense system, so that the air in the people's air defense system can circulate.

The existing civil air-proof ventilation fan is difficult to filter out impurities in the wind before exhausting, the impurities are easy to be adsorbed on the fan blade during the process of passing through the fan, and the fan is easy to be damaged due to the large impurities.

Disclosure of utility model

(One) solving the technical problems

Aiming at the defects of the prior art, the utility model provides a civil air defense ventilating fan.

(II) technical scheme

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a people's air defense ventilation fan, includes the box, the air inlet end of box is equipped with the air-supply line, the air-out end of box is equipped with the exhaust pipe, the front end of air-supply line is fixed to be set up the positioning seat, the front end of positioning seat is equipped with the frame, the rear end of frame is equipped with the locating shaft that rotates with the positioning seat to be connected, the mid portion of frame is equipped with the filter plate that can dismantle, the front end of frame is equipped with the fixed block, the front end of positioning seat is equipped with the locating plate, the front end constant head tank of frame, be equipped with the draw-in groove on the inner wall of constant head tank, the top symmetry of locating plate sets up the second cavity, the inside of second cavity is equipped with the second spring, the one end of second spring is equipped with the fixture block with draw-in groove complex.

In order to improve the practicability of the structure, the utility model is characterized in that the clamping blocks and the clamping grooves are of hemispherical structures, and the positioning seat, the frame and the positioning plate are all made of metal materials.

In order to make the installation of the locating plate more firm, the utility model is improved in that the bottom end of the locating plate is provided with a plug rod which is inserted into the locating seat.

In order to facilitate the disassembly and assembly of the filter plate, the utility model is improved in that the filter plate is fixed at the middle part of the frame through screws.

In order to facilitate the opening of the frame, the improvement of the utility model is that the front end of the frame is provided with a fixed block, the fixed block is provided with a groove, the front end of the positioning seat is provided with a first cavity, the inside of the first cavity is provided with a first spring, one end of the first spring is provided with a driving block, the driving block is provided with a ball which contacts with the fixed block, and the driving block is positioned in the groove.

(III) beneficial effects

Compared with the prior art, the utility model provides a civil air defense ventilation fan, which has the following beneficial effects:

According to the civil air-defense ventilating fan, impurities in natural wind can be blocked by the filter plate in the process of inhalation, the natural wind can be filtered through the filter plate, the impurities are prevented from being adsorbed on the fan blades, the box body is prevented from being damaged, and a limiting effect can be provided for the frame on the positioning seat through the positioning plate, so that the frame can be installed more firmly;

When the filter plate needs to be cleaned, the locating plate provides a pulling force, when the pulling force is larger than the elastic force of the second spring, the top end of the locating plate can be pulled out in the locating groove, at the moment, the first spring can provide an elastic force for the locating plate, the frame can be conveniently opened on the locating seat, and therefore the filter plate can be conveniently detached

Drawings

FIG. 1 is a schematic diagram 1 of the structure of the present utility model;

FIG. 2 is a schematic diagram of the structure of the present utility model 2;

FIG. 3 is a schematic diagram of the structure of the present utility model, shown in FIG. 3;

FIG. 4 is a schematic view of the mounting structure of the driving block according to the present utility model;

FIG. 5 is a schematic diagram of a fitting structure of a latch and a slot according to the present utility model;

In the figure: 1. a case; 2. an air inlet pipe; 3. an exhaust pipe; 4. a positioning seat; 5. a frame; 6. a filter plate; 7. positioning a shaft; 8. a fixed block; 9. a groove; 10. a first cavity; 11. a first spring; 12. a driving block; 13. a positioning plate; 14. a rod; 15. a second cavity; 16. a clamping groove; 17. a clamping block; 18. and a positioning groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, a civil air defense ventilation fan comprises a box body 1, an air inlet end of the box body 1 is provided with an air inlet pipe 2, an air outlet end of the box body 1 is provided with an exhaust pipe 3, the front end of the air inlet pipe 2 is fixedly provided with a positioning seat 4, the front end of the positioning seat 4 is provided with a frame 5, the rear end of the frame 5 is provided with a positioning shaft 7 rotationally connected with the positioning seat 4, the middle part of the frame 5 is provided with a detachable filter plate 6, the front end of the frame 5 is provided with a fixed block 8, the front end of the positioning seat 4 is provided with a positioning plate 13, a front end positioning groove 18 of the frame 5 is provided with a clamping groove 16 on the inner wall of the positioning groove 18, the top end of the positioning plate 13 is symmetrically provided with a second cavity 15, the inside of the second cavity 15 is provided with a second spring, one end of the second spring is provided with a clamping block 17 matched with the clamping groove 16, natural wind enters the box body 1 through the air inlet pipe 2, and can be sucked into a designated position through the air inlet pipe 3, and then the filter plate 6 can be more firmly adsorbed on the filter plate 6 through the filter plate 6, and the filter plate 5 can be prevented from being more firmly positioned in the filter plate 6, and the filter plate 5 can be prevented from being more firmly attached to the filter plate 1;

When the filter plate 6 needs to be cleaned, a pulling force is provided for the positioning plate 13, when the pulling force is larger than the elastic force of the second spring, the top end of the positioning plate 13 can be pulled out in the positioning groove 18, and at the moment, the first spring 11 can provide an elastic force for the positioning plate 13, so that the frame 5 can be conveniently opened on the positioning seat 4, and the filter plate 6 can be conveniently detached.

In this structure, the clamping blocks 17 and the clamping grooves 16 are hemispherical structures, and the positioning seat 4, the frame 5 and the positioning plate 13 are all made of metal materials, and the positioning seat 4, the frame 5 and the positioning plate 13 are all made of stainless steel materials.

The locating plate 13 lacks location structure in the front end of positioning seat 4, can make the infirm of locating plate 13 installation, the bottom of locating plate 13 is equipped with inserts pole 14 that inserts inside positioning seat 4, can provide a location structure for locating plate 13 in the front end of positioning seat 4, can make the more firm of locating plate 13 installation.

In this structure, the filter plate 6 is fixed to the middle part of the frame 5 by screws, and the screw fixing mode has the advantage of convenient disassembly and assembly.

The frame 5 lacks propulsion structure on positioning seat 4, can make frame 5 be inconvenient for opening, the front end of frame 5 is equipped with fixed block 8, be equipped with recess 9 on the fixed block 8, the front end of positioning seat 4 is equipped with first cavity 10, the inside of first cavity 10 is equipped with first spring 11, the one end of first spring 11 is equipped with driving piece 12, be equipped with the ball of contact fixed block 8 on the driving piece 12, driving piece 12 is located the inside of recess 9, after frame 5 installs, can make driving piece 12 compress first spring 11, after positioning plate 13 dismantles, first spring 11 can provide an elasticity for driving piece 12 this moment, can be convenient for open frame 5 on positioning seat 4, can reduce the frictional force between driving piece 12 and the fixed block 8 through the ball that is equipped with.

In this description, it should be noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a people's air defense ventilation fan, includes box (1), the air inlet end of box (1) is equipped with air-supply line (2), the air-out end of box (1) is equipped with exhaust pipe (3), its characterized in that: the front end of air-supply line (2) is fixed to be set up positioning seat (4), the front end of positioning seat (4) is equipped with frame (5), the rear end of frame (5) is equipped with locating shaft (7) of being connected with positioning seat (4) rotation, the mid portion of frame (5) is equipped with filter plate (6) that can dismantle, the front end of frame (5) is equipped with fixed block (8), the front end of positioning seat (4) is equipped with locating plate (13), front end constant head tank (18) of frame (5), be equipped with draw-in groove (16) on the inner wall of constant head tank (18), the top symmetry of locating plate (13) sets up second cavity (15), the inside of second cavity (15) is equipped with the second spring, the one end of second spring is equipped with fixture block (17) with draw-in groove (16) complex.

2. The civil air defense ventilation fan of claim 1 wherein: the clamping blocks (17) and the clamping grooves (16) are of hemispherical structures.

3. The civil air defense ventilation fan of claim 2 wherein: the bottom end of the positioning plate (13) is provided with a plug rod (14) which is inserted into the positioning seat (4).

4. A civil air defense ventilating blower according to claim 3, wherein: the filter plate (6) is fixed at the middle part of the frame (5) through screws.

5. The civil air defense ventilating blower of claim 4, wherein: the front end of frame (5) is equipped with fixed block (8), be equipped with recess (9) on fixed block (8), the front end of positioning seat (4) is equipped with first cavity (10), the inside of first cavity (10) is equipped with first spring (11), the one end of first spring (11) is equipped with drive block (12), be equipped with the ball of contact fixed block (8) on drive block (12), drive block (12) are located the inside of recess (9).

6. The civil air defense ventilating blower of claim 5, wherein: the positioning seat (4), the frame (5) and the positioning plate (13) are all made of metal materials.