One-way valve of fire extinguishing system device

Abstract

The utility model discloses a one-way valve of a fire extinguishing system device, which comprises a valve seat and a valve cover, a communication cavity and an air passage are arranged in the valve seat, an annular magnet is arranged at the tail end of the communication cavity, a magnetic plugging ball is arranged in the air passage, a connecting rod is arranged on the magnetic plugging ball, a sealing block is arranged on the connecting rod, and the sealing block is arranged on the valve cover. An annular magnet is arranged in the air channel, a magnetic plugging ball is arranged in the annular magnet, a limiting filter screen is further arranged in the air channel, the magnetic plugging ball is located between the limiting filter screen and the annular magnet, an ash discharging groove is formed in the right side of the limiting filter screen, and an electric valve is arranged on the ash discharging groove. And the magnetic ball sealer is tightly adsorbed on the annular magnet, so that the gas cannot enter the communicating cavity in the valve seat through the gas channel, the gas of the one-way valve can only flow in one way, and the working stability of the one-way valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves of a fire extinguishing system device, in particular to a one-way valve of a fire extinguishing system device. Background Art

[0002] Heptafluoropropane (HFC-227ea, FM-200) is a colorless, odorless, non-conductive, and non-secondary polluting gas. It is clean, low-toxic, has good electrical insulation, and has high fire extinguishing efficiency. In particular, it does not damage the ozone layer, has a relatively short residual time in the atmosphere, and has significantly better environmental performance than halons. It is a relatively successful clean gas fire extinguishing agent so far, and is considered to be one of the most ideal products to replace halons 1301 and 1211.

[0003] The one-way valve of the fire extinguishing system is used to seal and release the fire extinguishing agent. However, a common problem with the one-way valve of the existing HFC-227ea gas fire extinguishing system is that the one-way valve is not stable enough, and gas backflow is prone to occur, thereby reducing the use effect of the fire extinguishing device. Utility Model Content

[0004] The utility model aims to solve the technical problems existing in the prior art and provides a one-way valve for a fire extinguishing system device.

[0005] To achieve the above-mentioned purpose, the technical solution provided by the utility model is: a one-way valve of a fire extinguishing system device, including a valve seat and a valve cover, a connecting cavity and an airway are arranged in the valve seat, an annular magnet is arranged at the end of the connecting cavity, a magnetic sealing ball is arranged in the airway, a connecting rod is arranged on the magnetic sealing ball, a sealing block is arranged on the connecting rod, a limiting filter is also arranged in the airway, the magnetic sealing ball is located between the limiting filter and the annular magnet, an ash discharge groove is arranged on the right side of the limiting filter, and an electric valve is arranged on the ash discharge groove.

[0006] Preferably, a limiting groove is provided in the communicating cavity, a blocking block is provided in the limiting groove, a threaded rod is provided on the blocking block, and a handle is provided on the threaded rod.

[0007] Preferably, an air outlet cavity is provided in the valve cover, and a sealing groove communicating with the air passage is provided on the valve cover, the sealing groove cooperates with the sealing block, and the sealing groove is communicated with the air outlet cavity.

[0008] Preferably, the valve seat is provided with an external thread, and the valve cover is provided with an internal thread.

[0009] Preferably, the magnetic sealing ball comprises an iron core, and the iron core is wrapped with a rubber layer.

[0010] Beneficial effects of the utility model:

[0011] The utility model can block the backflow of gas in the air outlet cavity through the cooperation of the sealing block and the sealing groove. Even if gas flows back into the airway through the sealing groove, the direction of the gas pressure generated by the gas backflow will be the same as the direction of the magnetic attraction force of the magnetic sealing ball and the annular magnet, so the magnetic sealing ball will be tightly adsorbed on the annular magnet, making it impossible for gas to enter the connecting cavity in the valve seat through the airway, further ensuring that the gas of the one-way valve can only flow in one direction, thereby improving the working stability of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0013] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of the utility model.

[0014] Figure annotation:

[0015] 1-valve seat 2-valve cover 3-external thread 4-internal thread 5-connecting chamber 6-limiting groove 7-handle 8-threaded rod 9-blocking block 10-airway 11-sealing block 12-sealing groove 13-connecting rod 14-limiting filter 15-ash discharge groove 16-electric valve 17-iron core 18-rubber layer 19-ring magnet. DETAILED DESCRIPTION

[0016] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0017] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0018] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0019] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0020] Reference Figure 1 According to a preferred embodiment of the utility model, a one-way valve of a fire extinguishing system device comprises a valve seat 1 and a valve cover 2, wherein a connecting cavity 5 and an airway 10 are arranged in the valve seat 1, an annular magnet 19 is arranged at the end of the connecting cavity 5, a magnetic sealing ball is arranged in the airway 10, a connecting rod 13 is arranged on the magnetic sealing ball, a sealing block 11 is arranged on the connecting rod 13, a limiting filter screen 14 is also arranged in the airway 10, the magnetic sealing ball is located between the limiting filter screen 14 and the annular magnet 19, an air outlet cavity is arranged in the valve cover 2, a sealing groove 12 communicating with the airway 10 is arranged on the valve cover 2, the sealing groove 12 cooperates with the sealing block 11, and the sealing groove 12 is communicated with the air outlet cavity.

[0021] Specifically, the fire extinguishing agent of the fire extinguishing system device is heptafluoropropane, which flows into the connecting cavity 5 from the right side of the valve seat 1, and controls the one-way flow of the gas in the one-way valve through the separation of the magnetic blocking ball and the annular magnet 19. When the pressure generated by the gas entering the connecting cavity 5 from the right side of the valve seat 1 is greater than the magnetic attraction of the magnetic blocking ball and the annular magnet 19, the pressure of the gas is opposite to the direction of the magnetic force, and the magnetic blocking ball is separated from the annular magnet 19, and the magnetic blocking ball 19 moves to the left, driving the sealing block 11 to move to the left through the connecting rod 13. At this time, the gas in the connecting cavity 5 enters the valve cover 2 through the airway 10 and the sealing groove 12, and is then output from the air outlet cavity in the valve cover 2;

[0022] When gas flows back from the air outlet cavity of the valve cover 2, the cooperation between the sealing block 11 and the sealing groove 12 can block the backflow of gas in the air outlet cavity. However, there may be a tiny gap at the connection between the sealing groove 12 and the sealing block 11 for gas to pass through. Therefore, even if gas flows back into the airway 10 through the sealing groove 12, the direction of the gas pressure generated by the gas backflow will be the same as the direction of the magnetic attraction force of the magnetic sealing ball and the annular magnet 19, so the magnetic sealing ball will be tightly adsorbed on the annular magnet 19, making it impossible for the gas to pass through the airway into the connecting cavity 5 in the valve seat 1, further ensuring that the gas of the one-way valve can only flow in one direction, thereby improving the working stability of the utility model.

[0023] In this embodiment, an ash discharge slot 15 is provided on the right side of the position-limiting filter 14, and an electric valve 16 is provided on the ash discharge slot 15; the position-limiting filter 14 is used to limit the magnetic blocking ball to prevent the magnetic blocking ball from being unable to automatically attract due to insufficient magnetic attraction when the distance between the magnetic blocking ball and the annular magnet 19 is too far, and the effect of one-way gas flow cannot be achieved. In addition, the position-limiting filter 14 also has the effect of filtering the fire extinguishing agent, filtering out dust, impurities, etc. in the fire extinguishing agent.

[0024] Furthermore, a limiting groove 6 is provided in the communication cavity 5, a blocking block 11 is provided in the limiting groove 6, a threaded rod 8 is provided on the blocking block 11, and a handle 7 is provided on the threaded rod 8. Specifically, by rotating the handle 7 forward and backward, the threaded rod 8 and the blocking block 9 are controlled to move up and down, thereby realizing the delivery and sealing of gas.

[0025] Furthermore, the valve seat 1 is provided with an external thread 3, and the valve cover 2 is provided with an internal thread 4. The utility model can be directly installed and connected through the external thread 3 and the internal thread 4, which is very convenient; and disassembly and maintenance are simpler.

[0026] Furthermore, the magnetic sealing ball includes an iron core 17 , and the iron core 17 is wrapped with a rubber layer 18 .

[0027] Specifically, the interior of the magnetic sealing ball is an iron core 17, and a magnetic attraction is formed between the iron core 17 and the annular magnet 19, so that the magnetic sealing ball can produce an adsorption effect with the annular magnet 19. Since the rubber material has a certain elasticity, when the magnetic sealing ball fits with the annular magnet 19, the rubber layer can better block the gap between the annular magnet 19 and the sealing effect is better.

[0028] Under the premise that no conflict occurs, those skilled in the art may freely combine and superimpose the above-mentioned additional technical features.

[0029] The above description is only a preferred implementation mode of the present utility model. Any technical solution that achieves the purpose of the present utility model by basically the same means belongs to the protection scope of the present utility model.

Claims

1. A one-way valve for a fire extinguishing system, characterized in that: The invention comprises a valve seat (1) and a valve cover (2), wherein a connecting cavity (5) and an airway (10) are arranged in the valve seat (1), an annular magnet (19) is arranged at the end of the connecting cavity (5), a magnetic sealing ball is arranged in the airway (10), a connecting rod (13) is arranged on the magnetic sealing ball, a sealing block (11) is arranged on the connecting rod (13), a limit filter (14) is also arranged in the airway (10), the magnetic sealing ball is located between the limit filter (14) and the annular magnet (19), an ash discharge groove (15) is arranged on the right side of the limit filter (14), and an electric valve (16) is arranged on the ash discharge groove (15).

2. The one-way valve of a fire extinguishing system according to claim 1, characterized in that: A limiting groove (6) is provided in the communicating cavity (5), a blocking block (9) is provided in the limiting groove (6), a threaded rod (8) is provided on the blocking block (9), and a handle (7) is provided on the threaded rod (8).

3. The one-way valve of a fire extinguishing system according to claim 1, characterized in that: An air outlet cavity is provided in the valve cover (2), and a sealing groove (12) communicating with the air passage (10) is provided on the valve cover (2); the sealing groove (12) cooperates with the sealing block (11), and the sealing groove (12) communicates with the air outlet cavity.

4. The one-way valve of a fire extinguishing system according to claim 1, characterized in that: The valve seat (1) is provided with an external thread (3), and the valve cover (2) is provided with an internal thread (4).

5. The one-way valve of a fire extinguishing system according to claim 1, characterized in that: The magnetic sealing ball comprises an iron core (17), and the iron core (17) is wrapped with a rubber layer (18).

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