CN211779231U - Pilot-operated high-pressure large-flow pressure reducer - Google Patents
Pilot-operated high-pressure large-flow pressure reducer Download PDFInfo
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- CN211779231U CN211779231U CN201922286567.0U CN201922286567U CN211779231U CN 211779231 U CN211779231 U CN 211779231U CN 201922286567 U CN201922286567 U CN 201922286567U CN 211779231 U CN211779231 U CN 211779231U
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Abstract
The utility model discloses a pilot-operated high-pressure large-flow pressure reducer, which comprises a main valve body and a pilot valve connected with the main valve body, wherein the upper end of the main valve body is provided with an upper cover, an air cavity is formed between the upper cover and the main valve body, a gas baffle is arranged in the main valve body, and the bottom end in the main valve body is provided with a valve port. Therefore, the requirement of large flow use can be met.
Description
Technical Field
The utility model relates to a pressure reducer technical field specifically is a large-traffic pressure reducer of guide's formula high pressure.
Background
The pressure reducing valve is a valve which reduces the inlet pressure to a certain required outlet pressure by adjusting and depends on the energy of a medium, so that the outlet pressure can be automatically kept stable, the utility model with the publication number of CN207131931U discloses a high-flow pressure reducer which structurally comprises a safety valve, a high-pressure inlet, a movable block, a medium-pressure outlet and a cavity, the structural safety valve is arranged at the upper left corner of the movable block, the structural high-pressure inlet is arranged at the top of the movable block, the device has the advantages of compact and simple structure, easy processing, stable pressure drop and good sealing performance, however, the pressure reducing valve has the same defects with the existing pressure reducers, can be adjusted to be high, the flow is small, the pressure used by the pressure reducer with large caliber and large flow is not high enough, such as the outlet pressure is 5-40MPA, and simultaneously, but also needs larger flow, but in practice, proper pressure reducers, or the service life is short, and the valve port sealing gasket is not durable, so a pressure reducer which can regulate high pressure and output large flow is needed.
SUMMERY OF THE UTILITY MODEL
The utility model provides a to prior art not enough, the utility model provides a large-traffic pressure reducer of guide's formula high pressure has solved current pressure reducer and can have adjusted high and the flow is little on the contrary, and the pressure that the large-traffic big pressure reducer of bore used is not high enough problem.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a pilot-operated high-pressure large-flow pressure reducer comprises a main valve body and a pilot valve connected with the main valve body, wherein an upper cover is arranged at the upper end of the main valve body, an air cavity is formed between the upper cover and the main valve body, an air baffle plate is arranged in the main valve body, a valve port is arranged at the bottom end in the main valve body, a valve core is arranged at the lower end in the valve port, a first sealing ring is arranged at the outer edge of the upper end of the valve core, a sealing ring pressing cover is arranged above the first sealing ring, a spring is sleeved outside the valve core, a mandril is arranged at the upper end of the valve core, the upper end of the mandril penetrates through the air baffle plate, a piston is arranged at the top end of the.
Preferably, clearance fit is adopted between the valve port and the valve core.
Preferably, a second sealing ring is installed between the valve port and the main valve body.
Preferably, a sealing assembly is arranged between the plug and the valve core.
Preferably, the sealing assembly comprises a third sealing ring arranged on the inner wall of the plug, and a pair of tetrafluoro gaskets are arranged at the upper end and the lower end of the third sealing ring.
Preferably, the upper end of the upper cover is positioned at one side of the pilot valve and is provided with a needle valve.
Preferably, the outer edge of the gas baffle is provided with a retainer ring.
Preferably, a fourth sealing ring is arranged between the plug and the main valve body.
Advantageous effects
The utility model provides a pilot-operated high-pressure large-flow pressure reducer, which has the advantages that the pilot valve can adjust high pressure, the valve body of the main valve, the valve core and the valve port are in micro clearance fit, only a small amount of gas passes through the valve port and the sealing gasket before the valve core is separated from the valve port, the scouring action of the high-pressure gas on the sealing gasket is greatly reduced, the service life of the sealing gasket is prolonged, the high-pressure gas output by the pilot valve enters the upper cavity of the air chamber, the high-pressure gas acts on the piston, the piston opens the main valve core downwards, a large amount of gas flows through the valve body, the output air pressure of the pilot valve is stable, the output air pressure of the main valve and the output air pressure of the pilot valve are 1:1, so the output air pressure of the main valve can be stably output, meanwhile, because the pilot valve is the high-, therefore, the requirement of large flow use can be met.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic front view of the present invention.
Fig. 3 is a partially enlarged schematic view of the present invention.
In the figure: 1. a pilot valve; 2. a needle valve; 3. an upper cover; 4. a piston; 5. a mouth-shaped ring; 6. a retainer ring; 7. A gas baffle; 8. a top rod; 9. a valve port; 10. a second seal ring; 11. a sealing ring gland bush; 12. a first seal ring; 13. a third seal ring; 14. a valve core; 15. a fourth seal ring; 16. a spring; 17. a plug; 18. a tetrafluoro spacer; 19. a main valve body.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a pilot-operated high-pressure large-flow pressure reducer comprises a main valve body 19 and a pilot valve 1 connected with the main valve body 19, wherein an upper cover 3 is arranged at the upper end of the main valve body 19, an air cavity is formed between the upper cover 3 and the main valve body 19, a gas baffle plate 7 is arranged in the main valve body 19, a valve port 9 is arranged at the bottom end in the main valve body 19, a valve core 14 is arranged at the lower end in the valve port 9, a first sealing ring 12 is arranged at the outer edge of the upper end of the valve core 14, a sealing ring gland 11 is arranged above the first sealing ring 12, a spring 16 is sleeved outside the valve core 14, a mandril 8 is arranged at the upper end of the valve core 14, the upper end of the mandril 8 penetrates through the gas baffle plate 7, a piston 4 is arranged at the top end of the mandril 8, a mouth-shaped ring; the valve port 9 and the valve core 14 are in clearance fit; a second sealing ring 10 is arranged between the valve port 9 and the main valve body 19; a sealing assembly is arranged between the plug 17 and the valve core 14; the sealing assembly comprises a third sealing ring 13 arranged on the inner wall of the plug 17, and a pair of tetrafluoro gaskets 18 are arranged at the upper end and the lower end of the third sealing ring 13; the needle valve 2 is arranged at the upper end of the upper cover 3 and positioned on one side of the pilot valve 1; a check ring 6 is arranged on the outer edge of the gas baffle 7; a fourth sealing ring 15 is arranged between the plug 17 and the main valve body 19.
The following working principles, detailed connecting means thereof, and the following main descriptions of the working principles and processes thereof are well known in the art, and will be referred to by those skilled in the art for the specific connection and operation sequence of the components in the present disclosure.
Example (b): when the device is used, the device is connected with an inlet end through a pilot valve 1, and is connected with an outlet end through a needle valve 2, then a handle of the pilot valve 1 is adjusted clockwise, the outlet pressure of the pilot valve 1 rises, the outlet pressure of the pilot valve 1 is communicated with an upper cavity of a main valve body 19, gas enters an upper cavity of a piston 4 to compress the piston 4 downwards, the piston 4 pushes a main valve core 14 downwards, a main valve port 9 is opened, high-pressure gas flows from an inlet to an outlet, so that the outlet pressure rises, when the outlet pressure of the main valve is equal to the pilot valve pressure on the piston 4, the main valve core 14 is in a stable state, because the pilot valve is a high-pressure reducer, the outlet can output high pressure, the outlet pressure of the main valve is equal to the pilot valve pressure and also is high.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A pilot-operated high-pressure large-flow pressure reducer comprises a main valve body (19) and a pilot valve (1) connected with the main valve body (19), and is characterized in that an upper cover (3) is arranged at the upper end of the main valve body (19), an air cavity is formed between the upper cover (3) and the main valve body (19), a gas baffle plate (7) is arranged in the main valve body (19), a valve port (9) is arranged at the bottom end in the main valve body (19), a valve core (14) is arranged at the lower end in the valve port (9), a first sealing ring (12) is arranged at the outer edge of the upper end of the valve core (14), a sealing ring gland (11) is arranged above the first sealing ring (12), a spring (16) is sleeved outside the valve core (14), a mandril (8) is arranged at the upper end of the valve core (14), the upper end of the mandril (8) penetrates through the gas baffle plate (7), an opening ring (5) is arranged between the piston (4) and the main valve body (19), and a plug (17) is arranged at the bottom end of the main valve body (19).
2. Pilot-operated high-pressure high-flow pressure reducer according to claim 1, characterized in that the valve port (9) and the valve element (14) are in clearance fit.
3. A pilot-operated high-pressure high-flow pressure reducer according to claim 1, characterized in that a second sealing ring (10) is mounted between the valve port (9) and the main valve body (19).
4. Pilot-operated high-pressure high-flow pressure reducer according to claim 1, characterized in that a sealing assembly is installed between the plug (17) and the valve element (14).
5. The pilot-operated high-pressure high-flow pressure reducer according to claim 4, wherein the sealing assembly comprises a third sealing ring (13) arranged on the inner wall of the plug (17), and a pair of tetrafluoro gaskets (18) are arranged at the upper end and the lower end of the third sealing ring (13).
6. Pilot-operated high-pressure high-flow pressure reducer according to claim 1, characterized in that the needle valve (2) is mounted at the upper end of the upper cover (3) at the side of the pilot valve (1).
7. Pilot-operated high-pressure high-flow pressure reducer according to claim 1, characterized in that the outer edge of the gas baffle (7) is fitted with a retaining ring (6).
8. A pilot-operated high-pressure high-flow pressure reducer according to claim 1, characterized in that a fourth sealing ring (15) is mounted between the choke plug (17) and the main valve body (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922286567.0U CN211779231U (en) | 2019-12-19 | 2019-12-19 | Pilot-operated high-pressure large-flow pressure reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922286567.0U CN211779231U (en) | 2019-12-19 | 2019-12-19 | Pilot-operated high-pressure large-flow pressure reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211779231U true CN211779231U (en) | 2020-10-27 |
Family
ID=72974931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922286567.0U Active CN211779231U (en) | 2019-12-19 | 2019-12-19 | Pilot-operated high-pressure large-flow pressure reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211779231U (en) |
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2019
- 2019-12-19 CN CN201922286567.0U patent/CN211779231U/en active Active
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