Container valve with pressure reduction function

Abstract

The utility model discloses a container valve with a pressure reduction function, which relates to the technical field of valve body equipment and comprises a valve body, an air inlet is arranged in the top end of the valve body, a first cavity and a second cavity are arranged in the valve body, the bottom end of the air inlet is communicated with the first cavity, an upper push block is arranged in the first cavity, and a lower push block is arranged in the second cavity. A lower valve rod is arranged in the second cavity, the top end of the lower valve rod makes contact with the bottom face of the upper push block, a first transverse through hole, a longitudinal through hole and a second transverse through hole which are communicated with one another are formed in the lower valve rod, the first transverse through hole is communicated with the first cavity, and the second transverse through hole is communicated with the second cavity. A discharging port is formed in the position, corresponding to the second transverse through hole, of the valve body, the second transverse through hole is communicated with the discharging port, and a feeding port is formed in the bottom end of the valve body. The problems that in the continuous output process of an existing fire extinguishing device, the injection pressure is not stable, if a pressure reducing valve is externally connected, operation is more complex, and the use cost is also increased are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of valve body equipment, in particular to a container valve with self-decompression. Background Art

[0002] Container valves are equipment used on various pipelines in building fire protection systems. Container valves are also called bottle head valves. They are usually used to seal halogenated fire extinguishing agents and open and release halogenated fire extinguishing agents in case of fire.

[0003] Existing fire extinguishing devices usually use high-pressure containers to store fire extinguishing agents. When in use, the fire extinguishing agent is pushed to the fire point through the container valve by the power gas. However, during the continuous output process, the pressure of the power gas will continue to decrease, resulting in the injection pressure not being able to be maintained within a stable range, affecting the fire extinguishing effect. If an external pressure reducing valve is connected, not only will the operation be more complicated, but the cost of use will also increase. Therefore, a container valve with built-in pressure reducing function is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a container valve with built-in pressure relief, which solves the problem that the injection pressure of the existing fire extinguishing device is unstable during the continuous output process. If an external pressure relief valve is connected, not only will the operation be more complicated, but the cost of use will also become higher.

[0005] The utility model is achieved as follows: a container valve with self-contained pressure reduction comprises a valve body, a valve cover is provided at the top end of the valve body, an air inlet is provided in the top end of the valve body, a first cavity and a second cavity are provided inside the valve body, the bottom end of the air inlet is communicated with the first cavity, an upper push block is provided inside the first cavity, a lower valve stem is provided inside the second cavity, the top end of the lower valve stem contacts with the bottom surface of the upper push block, a first transverse through hole, a longitudinal through hole and a second transverse through hole which are communicated with each other are provided on the lower valve stem, the first transverse through hole is communicated with the second cavity, the valve body is provided with a discharge port at a position corresponding to the second transverse through hole, the second transverse through hole is communicated with the discharge port, and a feed port is provided at the bottom end of the valve body.

[0006] A further technical solution of the utility model is: a notch is provided at the bottom end of the upper push block, a spring is provided in the notch, and the bottom end of the spring is connected to the top end of the lower valve stem.

[0007] A further technical solution of the utility model is: a safety valve is provided on the valve body, and the horizontal position of the safety valve corresponds to the first cavity.

[0008] A further technical solution of the utility model is: a sealing ring is provided at the top end of the push-up block, and the sealing ring is in close contact with the inner wall of the valve body.

[0009] A further technical solution of the utility model is: a sealing cover is provided at the outlet end of the discharge port, and the sealing cover is threadedly connected to the valve body.

[0010] A further technical solution of the utility model is that the bottom end of the longitudinal through hole is communicated with the feed port.

[0011] Beneficial effects of the utility model: Compared with the traditional container valve, the utility model can automatically reduce pressure and keep the output pressure of the power gas within a stable range, thereby ensuring the fire extinguishing effect. When the gas enters the interior of the valve body through the air inlet, the air pressure will push the push-down block to move downward. At the same time, due to the high internal pressure, the fire extinguishing agent enters the valve body through the feed port, and enters the second cavity and the discharge port respectively through the longitudinal through holes on the lower valve stem. As the air pressure gradually increases, when the push-up block continuously pushes the lower valve stem downward, the spring at the top of the lower valve stem is continuously compressed, which will generate a reaction force, and the fire extinguishing agent entering the second cavity will also form a thrust. Therefore, when the pressure in the second cavity is greater than the pressure in the first cavity or the combined force of the three is greater than the force pushed by the air pressure, the push-up block will move upward, thereby achieving the effect of reducing pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic cross-sectional structure diagram of a container valve with self-decompression provided by the utility model;

[0013] Figure numerals: 1. Valve cover; 2. Valve body; 21. First cavity; 22. Second cavity; 3. Push-up block; 4. Sealing ring; 5. Safety valve; 6. Spring; 7. Lower valve stem; 71. First transverse through hole; 72. Longitudinal through hole; 73. Second transverse through hole; 8. Cover; 9. Discharge port; 10. Air inlet; 11. Feed port. DETAILED DESCRIPTION

[0014] The following is an explanation of the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0015] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of the present specification are only used to match the contents disclosed in the specification for people familiar with the technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present utility model, should still fall within the scope of the technical contents disclosed by the present utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in the present specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present utility model. The change or adjustment of the relative relationship, without substantial change of the technical contents, should also be regarded as the scope of the implementation of the present utility model.

[0016] Figure 1 The main structural components of a container valve with self-contained pressure reduction are shown, including a valve body 2, a valve cover 1 is provided at the top of the valve body 2, and the characteristics are: an air inlet 10 is provided in the top of the valve body 2, a first cavity 21 and a second cavity 22 are provided inside the valve body 2, the bottom end of the air inlet 10 is communicated with the first cavity 21, an upper push block 3 is provided inside the first cavity 21, a lower valve stem 7 is provided inside the second cavity 22, the top end of the lower valve stem 7 contacts the bottom surface of the upper push block 3, a first transverse through hole 71, a longitudinal through hole 72 and a second transverse through hole 73 which are communicated with each other are provided on the lower valve stem 7, the first transverse through hole 71 is communicated with the second cavity 22, the valve body 2 is provided with a discharge port 9 at a position corresponding to the second transverse through hole 73, the second transverse through hole 73 is communicated with the discharge port 9, and a feed port 11 is provided at the bottom end of the valve body 2.

[0017] Preferably, Figure 1 As shown, a notch is provided at the bottom end of the upper push block 3, a spring 6 is provided in the notch, and the bottom end of the spring 6 is connected to the top end of the lower valve stem 7.

[0018] Preferably, a safety valve 5 is provided on the valve body 2 , and the horizontal position of the safety valve 5 corresponds to the first cavity 21 .

[0019] Preferably, a sealing ring 4 is provided at the top of the push-up block 3, and the sealing ring 4 is in close contact with the inner wall of the valve body 2. The function of the sealing ring 4 is to prevent the power gas from passing through the push-up block 3 and directly entering the first cavity 21, resulting in excessive internal pressure of the valve body 2 and low output pressure, thereby resulting in poor fire extinguishing effect.

[0020] Preferably, a sealing cap 8 is provided at the outlet end of the discharge port 9, and the sealing cap 8 is threadedly connected to the valve body 2. The function of the sealing cap 8 is to prevent the fire extinguishing agent container from leaking when it is dumped and to prevent external gas or impurities from entering the container through the valve body and mixing with the fire extinguishing agent, thereby affecting its use effect.

[0021] Preferably, the bottom end of the longitudinal through hole 72 is connected to the feed port 11. The longitudinal through hole 72 is connected to the feed port 11 to facilitate the fire extinguishing agent to enter the discharge port through the second transverse through hole 73 and enter the second cavity 22 through the first transverse through hole 71.

[0022] It should be particularly noted that the movable range of the push-up block 3 is smaller than the distance from the first transverse through hole 71 to the bottom surface of the second cavity 22, and also smaller than the movable range of the second transverse through hole 73 relative to the discharge port 9, so as to ensure that the fire extinguishing agent can continuously pass through the second transverse through hole 73 into the discharge port 9 to complete the fire extinguishing, and the fire extinguishing agent enters the second cavity 22 to achieve the purpose of stabilizing the pressure strength.

[0023] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A container valve with self-decompression, comprising a valve body (2), a valve cover (1) being provided at the top of the valve body (2), characterized in that: An air inlet (10) is provided at the top end of the valve body (2), a first cavity (21) and a second cavity (22) are provided inside the valve body (2), the bottom end of the air inlet (10) is connected to the first cavity (21), an upper push block (3) is provided inside the first cavity (21), a lower valve stem (7) is provided inside the second cavity (22), the top end of the lower valve stem (7) is in contact with the bottom surface of the upper push block (3), and the lower valve stem (7) is provided with a first transverse through hole (71) and a longitudinal through hole (72) which are connected to each other. A through hole (72) and a second transverse through hole (73), the first transverse through hole (71) is connected to the second cavity (22), the valve body (2) is provided with a discharge port (9) at a position corresponding to the second transverse through hole (73), the second transverse through hole (73) is connected to the discharge port (9), the bottom end of the valve body (2) is provided with a feed port (11), the bottom end of the push block (3) is provided with a slot, a spring (6) is provided in the slot, and the bottom end of the spring (6) is connected to the top end of the lower valve stem (7).

2. A container valve with self-decompression according to claim 1, characterized in that: The valve body (2) is provided with a safety valve (5), and the horizontal position of the safety valve (5) corresponds to the first cavity (21).

3. A container valve with self-decompression according to claim 1, characterized in that: A sealing ring (4) is provided at the top end of the push-up block (3), and the sealing ring (4) is in close contact with the inner wall of the valve body (2).

4. A container valve with self-decompression according to claim 1, characterized in that: The outlet end of the discharge port (9) is provided with a sealing cover (8), and the sealing cover (8) is threadedly connected to the valve body (2).

5. A container valve with self-decompression according to claim 1, characterized in that: The bottom end of the longitudinal through hole (72) is connected to the feed port (11).

Images