Pressurizing device for dry powder extinguisher

Abstract

The utility model relates to the technical field of fire extinguishers, and discloses a pressurizing device for a dry powder fire extinguisher, which comprises a pressurizing device, a weighing platform and a nitrogen tank, a supporting mechanism is arranged on the side wall of the pressurizing device, a placing cavity is arranged on the front side of a housing of the pressurizing device, a protection mechanism is arranged inside the placing cavity, and the weighing platform is arranged on the front side of the pressurizing device; the protection mechanism comprises damping rotating shafts, connecting rods and limiting rings, rotating rods are rotatably connected to the interiors of the placement cavities, cover plates are fixedly connected to the side walls of the rotating rods, annular grooves are formed in the cover plates, outer rings of the damping rotating shafts are fixedly connected to the interiors of the cover plates, and the connecting rods are fixedly connected between the interiors of the damping rotating shafts. According to the utility model, after the cover plate is lifted, the limiting ring is overturned to a horizontal state, and then the dry powder extinguisher is placed in the limiting ring, so that the stability of the extinguisher during pressurization is ensured, and when the cover plate is closed, the cover plate covers the top of the weighing platform, thereby playing a role in protecting the weighing platform from being damaged, and further prolonging the service life of the equipment.

Description

Technical Field

[0001] This utility model relates to the field of fire extinguisher technology, and in particular to a pressurizing device for dry powder fire extinguishers. Background Technology

[0002] Dry powder fire extinguishers are widely used in industrial, commercial, and residential fire safety applications. They work by spraying a stored dry powder extinguishing agent directly at the fire source to isolate oxygen and inhibit the chemical reaction of combustion, thus achieving rapid fire suppression. To ensure proper operation in emergencies, dry powder fire extinguishers need to be filled with a propellant gas at an appropriate pressure to ensure smooth dispensing of the extinguishing agent upon activation. Therefore, during the production, maintenance, and refilling of dry powder fire extinguishers, a pressurization device is typically used to pressurize the internal components to maintain their normal operating performance.

[0003] Existing dry powder fire extinguisher pressurization devices mainly include manual, automatic, and semi-automatic types. Typically, during pressurization, the fire extinguisher needs to be placed on a weighing platform, and a pressurizing head is connected to the pressurizing end of the fire extinguisher to fill it with propellant gas, ensuring the fire extinguisher reaches the specified storage pressure. In addition, some pressurization devices are equipped with pressure detection and adjustment mechanisms to monitor the internal pressure of the fire extinguisher in real time during the pressurization process, ensuring that the pressure after filling meets the standard requirements. However, in some devices, the fire extinguisher is simply placed on the weighing platform during the pressurization process, lacking a limiting structure, making it prone to tipping or shifting due to vibration or airflow impact, affecting the pressurization process. Therefore, a new pressurization device for dry powder fire extinguishers is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a pressurizing device for dry powder fire extinguishers, which aims to improve the problem that fire extinguishers in the prior art are simply placed on a weighing platform and lack a limiting structure, making them prone to tipping or shifting due to vibration or airflow impact.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A pressurizing device for a dry powder fire extinguisher includes a pressurizer, a weighing platform, and a nitrogen tank. The side wall of the pressurizer is provided with a support mechanism. The front side of the pressurizer housing has a placement cavity and a protective mechanism inside. The weighing platform is located on the front side of the pressurizer.

[0007] The protective mechanism includes a damping shaft, a connecting rod, and a limiting ring. A rotating rod is rotatably connected inside the placement cavity. A cover plate is fixedly connected to the side wall of the rotating rod. An annular groove is opened inside the cover plate. The outer ring of the damping shaft is fixedly connected inside the cover plate. The connecting rod is fixedly connected inside the damping shaft. The limiting ring is fixedly connected to the side wall of the connecting rod.

[0008] As a further description of the above technical solution:

[0009] The connecting rod is disposed inside the annular groove, and the limiting ring is rotatably connected to the annular groove through the connecting rod.

[0010] As a further description of the above technical solution:

[0011] A magnetic strip is fixedly connected inside the placement cavity, and the magnetic strip is magnetically attracted to the cover plate.

[0012] As a further description of the above technical solution:

[0013] The base of the weighing platform is fixedly connected to a support bar, and the cover plate is attached to the support bar.

[0014] As a further description of the above technical solution:

[0015] A handle is fixedly connected to the side wall of the cover plate, and the side wall of the cover plate is slidably connected inside the placement cavity.

[0016] As a further description of the above technical solution:

[0017] The support mechanism includes a limiting frame and a support plate. A side plate is fixedly connected to the side wall of the pressurizer. The limiting frame and the support plate are both fixedly connected to the top of the side plate. A reinforcing rod is fixedly connected between the limiting frame and the support plate and the pressurizer.

[0018] As a further description of the above technical solution:

[0019] The limiting frame and the tray are arranged diagonally from high to low, with the limiting frame located at the bottom.

[0020] As a further description of the above technical solution:

[0021] The end of the nitrogen tank is slidably connected inside the limiting frame, and the nitrogen tank is placed on the surface of the tray.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, after lifting the cover plate, the limiting ring is flipped to a horizontal state. By placing the dry powder fire extinguisher inside the limiting ring, the stability of the fire extinguisher during pressurization is ensured. When the cover plate is closed, it covers the top of the weighing platform, which protects the weighing platform from damage and thus improves the service life of the equipment.

[0024] 2. In this utility model, the pressurizer, weighing platform and support mechanism are designed as a whole. The operator only needs to place the fire extinguisher on the weighing platform and directly carry out the pressurization operation. There is no need to worry about the equipment shifting or instability. Moreover, the arrangement of the limiting frame and the support plate in the fixing mechanism from high to low makes it possible to install the nitrogen tank without excessively lifting it, which improves the convenience. Attached Figure Description

[0025] Fig. 1 This is a three-dimensional schematic diagram of a pressurizing device for a dry powder fire extinguisher proposed in this utility model;

[0026] Fig. 2 This is a partial structural schematic diagram of a pressurization device for a dry powder fire extinguisher proposed in this utility model;

[0027] Fig. 3 This is a schematic diagram of the protective structure of a pressurization device for a dry powder fire extinguisher proposed in this utility model.

[0028] Legend:

[0029] 1. Pressurizer; 2. Weighing platform; 3. Nitrogen tank; 4. Placement chamber; 5. Rotating rod; 6. Cover plate; 7. Handle; 8. Magnetic strip; 9. Annular groove; 10. Damping shaft; 11. Connecting rod; 12. Limiting ring; 13. Side plate; 14. Limiting frame; 15. Support plate; 16. Reinforcing rod; 17. Support bar. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figs. 1-3This utility model provides an embodiment of a pressurizing device for dry powder fire extinguishers, comprising a pressurizer 1, a weighing platform 2, and a nitrogen tank 3. Both the pressurizer 1 and the weighing platform 2 are existing technologies. The pressurizer 1 is used to pressurize the interior of the dry powder fire extinguisher, and will not be described in detail here. A support mechanism is provided on the side wall of the pressurizer 1. A placement cavity 4 is opened on the front side of the pressurizer 1's outer shell, and a protective mechanism is provided inside, ensuring the compactness of the equipment structure. The weighing platform 2 is located on the front side of the pressurizer 1. The protective mechanism includes a damping shaft 10, a connecting rod 11, and a limiting ring 12. A rotating rod 5 is rotatably connected inside the placement cavity 4. A cover plate 6 is fixedly connected to the side wall of the rotating rod 5. A handle 7 is fixedly connected to the side wall of the cover plate 6, facilitating the flipping of the cover plate 6. Before flipping, the cover plate 6 covers the top of the weighing platform 2, protecting it from impact damage when not in use. The side wall of the cover plate 6 is slidably connected inside the placement cavity 4, and an annular groove is provided inside the cover plate 6. 9. The outer ring of the damping shaft 10 is fixedly connected to the inside of the cover plate 6. The connecting rod 11 is fixedly connected to the inside of the damping shaft 10. The connecting rod 11 can rotate through the damping shaft 10 and can limit its position after rotation. The limiting ring 12 is fixedly connected to the side wall of the connecting rod 11. The connecting rod 11 is set inside the annular groove 9. The limiting ring 12 can limit the dry powder fire extinguisher and prevent it from tipping over when it is pressurized. The limiting ring 12 is rotatably connected to the inside of the annular groove 9 through the connecting rod 11. When not in use, the limiting ring 12 can be flipped into the annular groove 9 to reduce the space occupied. The placement cavity 4 is fixedly connected to the magnetic strip 8. The magnetic strip 8 is magnetically attracted to the cover plate 6. The cover plate 6 is made of iron material. After flipping the cover plate 6, it can be connected to the magnetic strip 8 to ensure the stability of the position. The side wall of the base of the weighing platform 2 is fixedly connected to the support strip 17. The cover plate 6 fits into the support strip 17 to achieve the effect of supporting the cover plate 6 and at the same time ensure that the cover plate 6 does not directly press on the top of the weighing platform 2.

[0032] Reference Figs. 1-3 The support mechanism includes a limiting frame 14 and a tray 15. A side plate 13 is fixedly connected to the side wall of the pressurizer 1. The limiting frame 14 and the tray 15 are both fixedly connected to the top of the side plate 13. A reinforcing rod 16 is fixedly connected between the limiting frame 14 and the tray 15 and the pressurizer 1, which has a reinforcing effect and ensures the stability of the support. The limiting frame 14 and the tray 15 are arranged diagonally from high to low, with the limiting frame 14 located at the bottom. The end of the nitrogen tank 3 is slidably connected inside the limiting frame 14. The nitrogen tank 3 is placed on the surface of the tray 15. When placing the nitrogen tank 3, the front end of the nitrogen tank 3 is inserted into the inside of the limiting frame 14, and then the body of the nitrogen tank 3 is placed on the tray 15. There is no need to lift the nitrogen tank 3 excessively, which achieves the effect of easy placement.

[0033] Working principle: When using this device to pressurize a dry powder fire extinguisher, the cover plate 6 is flipped over to connect with the magnetic strip 8. Then, the limiting ring 12 is flipped out from inside the annular groove 9, causing the connecting rod 11 to rotate inside the damping shaft 10. After rotation, the rod stabilizes in its position. When the limiting ring 12 is flipped to a horizontal position, the dry powder fire extinguisher is placed on top of the weighing platform 2, inside the limiting ring 12. Then, the pressing head on the pressurizer 1 is connected to the pressing end of the dry powder fire extinguisher. By starting the pressurizer 1, the dry powder fire extinguisher can be pressurized. During the process, the limiting ring 12 can ensure the stability of the dry powder fire extinguisher and prevent it from tipping over. At the same time, the value on the display screen of the weighing platform 2 can be used to determine whether the fire extinguisher has been fully pressurized. When the gas inside the nitrogen cylinder 3 is depleted and needs to be replaced, the connecting pipe can be removed from the nitrogen cylinder 3, and then the nitrogen cylinder 3 can be removed for replacement. During installation, first insert the front end of the nitrogen cylinder 3 into the inside of the limiting frame 14, then place the body of the nitrogen cylinder 3 on the tray 15 to complete the placement of the nitrogen cylinder 3, and finally connect the connecting pipe to the end of the nitrogen cylinder 3 to complete the replacement.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pressurizing device for a dry powder fire extinguisher, comprising a pressurizer (1), a weighing platform (2), and a nitrogen cylinder (3), characterized in that: The side wall of the pressurizer (1) is provided with a support mechanism. The front side of the outer shell of the pressurizer (1) is provided with a placement cavity (4) and a protective mechanism is provided inside. The weighing platform (2) is located on the front side of the pressurizer (1). The protective mechanism includes a damping shaft (10), a connecting rod (11), and a limiting ring (12). A rotating rod (5) is rotatably connected inside the placement cavity (4). A cover plate (6) is fixedly connected to the side wall of the rotating rod (5). An annular groove (9) is opened inside the cover plate (6). The outer ring of the damping shaft (10) is fixedly connected inside the cover plate (6). The connecting rod (11) is fixedly connected inside the damping shaft (10). The limiting ring (12) is fixedly connected to the side wall of the connecting rod (11).

2. The pressurization device for a dry powder fire extinguisher according to claim 1, characterized in that: The connecting rod (11) is disposed inside the annular groove (9), and the limiting ring (12) is rotatably connected to the annular groove (9) through the connecting rod (11).

3. The pressurization device for a dry powder fire extinguisher according to claim 1, characterized in that: A magnetic strip (8) is fixedly connected inside the placement cavity (4), and the magnetic strip (8) is magnetically attracted to the cover plate (6).

4. A pressurizing device for a dry powder fire extinguisher according to claim 1, characterized in that: The base side wall of the weighing platform (2) is fixedly connected with a support strip (17), and the cover plate (6) is in contact with the support strip (17).

5. A pressurizing device for a dry powder fire extinguisher according to claim 1, characterized in that: The cover plate (6) has a handle (7) fixedly connected to its side wall, and the cover plate (6) is slidably connected to the inside of the placement cavity (4).

6. A pressurizing device for a dry powder fire extinguisher according to claim 1, characterized in that: The support mechanism includes a limiting frame (14) and a support plate (15). A side plate (13) is fixedly connected to the side wall of the pressurizer (1). The limiting frame (14) and the support plate (15) are both fixedly connected to the top of the side plate (13). A reinforcing rod (16) is fixedly connected between the limiting frame (14) and the support plate (15) and the pressurizer (1).

7. A pressurizing device for a dry powder fire extinguisher according to claim 6, characterized in that: The limiting frame (14) and the tray (15) are arranged diagonally from high to low, with the limiting frame (14) located at the bottom.

8. A pressurizing device for a dry powder fire extinguisher according to claim 7, characterized in that: The nitrogen tank (3) is slidably connected at its end inside the limiting frame (14), and the nitrogen tank (3) is placed on the surface of the tray (15).

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