Fire extinguisher with pressure relief mechanism

Abstract

The fire extinguisher comprises a fire extinguisher body, a partition plate is fixedly installed in the fire extinguisher body, a pressure relief hole is formed in the partition plate, the pressure relief mechanism is arranged on the partition plate, a connecting mechanism is arranged on the pressure relief mechanism, the bottom of the fire extinguisher body is communicated with a pressure relief pipe, and the pressure relief pipe is communicated with the pressure relief hole. A cover is installed on the outer portion of the pressure relief pipe in a threaded mode. According to the fire extinguisher with the pressure relief mechanism, when the air pressure above the partition plate is larger than the air pressure below the partition plate, the pressure relief mechanism is disconnected with the partition plate, the pressure relief mechanism moves to a proper position, when the air pressure above the partition plate and the air pressure below the partition plate are kept balanced, the pressure relief mechanism restores to the original position, and the pressure relief mechanism is connected with the partition plate through the connecting mechanism; and by loosening the cover, the air pressure below the partition plate is discharged through the pressure relief pipe to be balanced with the ambient air pressure, and by tightening the cover, the pressure in the fire extinguisher body is reduced, the possibility of explosion is reduced, and the safety performance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire extinguishers, in particular to a fire extinguisher with a pressure relief mechanism. Background Art

[0002] A fire extinguisher is a portable fire-fighting tool that contains chemicals to put out fires. Fire extinguishers are one of the most common firefighting equipment and are stored in public places or places where fires may occur. Different types of fire extinguishers contain different ingredients and are designed for different types of fires.

[0003] If a fire extinguisher is exposed to a high temperature environment for a long time, such as being directly exposed to the sun, or being stored in a place with too high a temperature, the internal pressure will increase due to the increase in temperature, and an explosion may occur, posing a safety hazard. The fire extinguisher needs to be depressurized, so a fire extinguisher with a pressure relief mechanism is proposed to solve the above problem. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a fire extinguisher with a pressure relief mechanism, which has the advantages of good safety performance and solves the problem of potential safety hazards.

[0005] To achieve the above object, the utility model provides the following technical solution: a fire extinguisher with a pressure relief mechanism, comprising a fire extinguisher body, a partition is fixedly installed inside the fire extinguisher body, a pressure relief hole is opened inside the partition, a pressure relief mechanism is arranged on the partition, a connecting mechanism is arranged on the pressure relief mechanism, a pressure relief pipe is connected to the bottom of the fire extinguisher body, and a cover is installed on the outer thread of the pressure relief pipe;

[0006] The pressure relief mechanism includes a warehouse body, which is fixedly connected to the bottom of the partition, and a plurality of through holes are opened on the outside of the warehouse body. A spring is fixedly installed on the inner bottom wall of the warehouse body, a movable plate is fixedly installed on the top of the spring, a sealing ring is fixedly installed on the outside of the movable plate, a sleeve is fixedly installed on the inner bottom wall of the warehouse body, and a vertical rod extending into the sleeve is fixedly installed on the bottom of the movable plate.

[0007] Furthermore, the pressure relief hole is located inside the warehouse body.

[0008] Furthermore, the plurality of through holes are distributed in an annular shape with equal spacing.

[0009] Furthermore, the outside of the sealing ring is in contact with the warehouse body.

[0010] Furthermore, the sleeve matches the vertical rod.

[0011] Furthermore, the connecting mechanism includes a first magnet, which is fixedly connected to the top of the movable plate, and a second magnet is fixedly installed on the bottom of the partition, and the second magnet matches the first magnet.

[0012] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0013] The fire extinguisher with a pressure relief mechanism is provided with a fire extinguisher body, a partition, a pressure relief mechanism, a connecting mechanism, a pressure relief pipe and a cover. When the air pressure above the partition is greater than the air pressure below the partition, the pressure relief mechanism is disconnected from the partition and moves to a suitable position. When the air pressure above the partition is balanced with the air pressure below the partition, the pressure relief mechanism returns to its original position, and the connecting mechanism connects the pressure relief mechanism to the partition. By loosening the cover, the air pressure below the partition is discharged through the pressure relief pipe to balance with the ambient air pressure. By tightening the cover, the pressure inside the fire extinguisher body is reduced, the possibility of explosion is reduced, and the safety performance is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a partial front cross-sectional view of the utility model;

[0016] Figure 3 For this utility model Figure 2 Enlarged view of point A in the middle.

[0017] In the figure: 1 fire extinguisher body, 2 partition, 3 pressure relief mechanism, 31 warehouse body, 32 spring, 33 moving plate, 34 sealing ring, 35 sleeve, 36 vertical rod, 4 connecting mechanism, 41 first magnet, 42 second magnet, 5 pressure relief pipe, 6 cover. DETAILED DESCRIPTION

[0018] 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.

[0019] See also Figure 1-3 A fire extinguisher with a pressure relief mechanism in this embodiment includes a fire extinguisher body 1, a partition 2 is fixedly installed inside the fire extinguisher body 1, a pressure relief hole is opened inside the partition 2, a pressure relief mechanism 3 is arranged on the partition 2, a connecting mechanism 4 is arranged on the pressure relief mechanism 3, a pressure relief pipe 5 is connected to the bottom of the fire extinguisher body 1, and a cover 6 is installed on the external thread of the pressure relief pipe 5.

[0020] Specifically, when the air pressure above the partition 2 is greater than the air pressure below the partition 2, the pressure relief mechanism 3 is disconnected from the partition 2, and the pressure relief mechanism 3 moves to a suitable position. When the air pressure above the partition 2 is balanced with the air pressure below the partition 2, the pressure relief mechanism 3 returns to its original position, and the connecting mechanism 4 connects the pressure relief mechanism 3 to the partition 2. By loosening the cover 6, the air pressure below the partition 2 is discharged through the pressure relief pipe 5 to balance with the ambient air pressure. By tightening the cover 6, the pressure inside the fire extinguisher body 1 is reduced, the possibility of explosion is reduced, and the safety performance is improved.

[0021] In this embodiment, the pressure relief mechanism 3 includes a warehouse body 31, which is fixedly connected to the bottom of the partition 2, and the pressure relief hole is located inside the warehouse body 31. A plurality of through holes are opened on the outside of the warehouse body 31, and the plurality of through holes are equidistantly distributed in a ring shape. A spring 32 is fixedly installed on the inner bottom wall of the warehouse body 31, and a movable plate 33 is fixedly installed on the top of the spring 32. A sealing ring 34 is fixedly installed on the outside of the movable plate 33, and the outside of the sealing ring 34 is in contact with the warehouse body 31. A sleeve 35 is fixedly installed on the inner bottom wall of the warehouse body 31, and a vertical rod 36 extending into the interior of the sleeve 35 is fixedly installed on the bottom of the movable plate 33, and the sleeve 35 matches the vertical rod 36.

[0022] Specifically, when the air pressure above the partition 2 is greater than the air pressure below the partition 2, the movable plate 33 is forced to drive the sealing ring 34 to move downward inside the warehouse body 31, and the movable plate 33 drives the vertical rod 36 to move downward inside the sleeve 35. The spring 32 is compressed, and the movable plate 33 is located below the through hole. When the air pressure above the partition 2 is balanced with the air pressure below the partition 2, the spring 32 gradually restores its deformation, and the movable plate 33 is forced to drive the sealing ring 34 to move upward inside the warehouse body 31. When the air pressure above the partition 2 is balanced with the air pressure below the partition 2, the movable plate 33 is located above the through hole.

[0023] In this embodiment, the connecting mechanism 4 includes a first magnet 41 , which is fixedly connected to the top of the moving plate 33 , and a second magnet 42 is fixedly installed on the bottom of the partition 2 , and the second magnet 42 matches the first magnet 41 .

[0024] Specifically, when the first magnet 41 and the second magnet 42 are magnetically attracted to each other, the movable plate 33 is connected to the partition plate 2 , and when the first magnet 41 and the second magnet 42 are separated, the movable plate 33 and the partition plate 2 are disconnected.

[0025] The working principle of the above embodiment is:

[0026] When the air pressure above the partition 2 is greater than the air pressure below the partition 2, the movable plate 33 is forced to separate the first magnet 41 and the second magnet 42, and the movable plate 33 is disconnected from the partition 2. The movable plate 33 drives the sealing ring 34 to move downward inside the warehouse body 31, and the movable plate 33 drives the vertical rod 36 to move downward inside the sleeve 35. The spring 32 is compressed, and the movable plate 33 is located below the through hole. When the air pressure above the partition 2 is balanced with the air pressure below the partition 2, the spring 32 gradually recovers its deformation, and the movable plate 33 is forced The sealing ring 34 is driven to move upward inside the warehouse body 31. When the air pressure above the partition 2 is balanced with the air pressure below the partition 2, the movable plate 33 is located above the through hole. The movable plate 33 drives the first magnet 41 and the second magnet 42 to be magnetically attracted to each other. The movable plate 33 is connected to the partition 2. By loosening the cover 6, the air pressure below the partition 2 is discharged through the pressure relief pipe 5 to balance with the ambient air pressure. By tightening the cover 6, the pressure inside the fire extinguisher body 1 is reduced, the possibility of explosion is reduced, and the safety performance is improved.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0028] Although 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 of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fire extinguisher with a pressure relief mechanism, comprising a fire extinguisher body (1), a partition (2) fixedly mounted inside the fire extinguisher body (1), a pressure relief hole being provided inside the partition (2), characterized in that: The partition (2) is provided with a pressure relief mechanism (3), the pressure relief mechanism (3) is provided with a connection mechanism (4), the bottom of the fire extinguisher body (1) is connected with a pressure relief pipe (5), and the outer thread of the pressure relief pipe (5) is provided with a cover (6); The pressure relief mechanism (3) comprises a bin body (31), the bin body (31) being fixedly connected to the bottom of the partition (2), a plurality of through holes being formed on the outside of the bin body (31), a spring (32) being fixedly mounted on the inner bottom wall of the bin body (31), a movable plate (33) being fixedly mounted on the top of the spring (32), a sealing ring (34) being fixedly mounted on the outside of the movable plate (33), a sleeve (35) being fixedly mounted on the inner bottom wall of the bin body (31), and a vertical rod (36) extending into the interior of the sleeve (35) being fixedly mounted on the bottom of the movable plate (33).

2. A fire extinguisher with a pressure relief mechanism as claimed in claim 1, characterized in that: The pressure relief hole is located inside the bin body (31).

3. A fire extinguisher with a pressure relief mechanism as claimed in claim 1, characterized in that: The plurality of through holes are distributed in an annular shape with equal intervals.

4. A fire extinguisher with a pressure relief mechanism as claimed in claim 1, characterized in that: The exterior of the sealing ring (34) is in contact with the bin body (31).

5. A fire extinguisher with a pressure relief mechanism as claimed in claim 1, characterized in that: The sleeve (35) matches the vertical rod (36).

6. A fire extinguisher with a pressure relief mechanism as claimed in claim 1, characterized in that: The connecting mechanism (4) comprises a first magnet (41), the first magnet (41) being fixedly connected to the top of the moving plate (33), and a second magnet (42) being fixedly mounted on the bottom of the partition (2), the second magnet (42) matching the first magnet (41).

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