CN215258033U - Pilot-operated pressure reducer with filtering capability - Google Patents
Pilot-operated pressure reducer with filtering capability Download PDFInfo
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- CN215258033U CN215258033U CN202121786499.5U CN202121786499U CN215258033U CN 215258033 U CN215258033 U CN 215258033U CN 202121786499 U CN202121786499 U CN 202121786499U CN 215258033 U CN215258033 U CN 215258033U
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- filter
- gas
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Abstract
The utility model discloses a pilot-operated pressure reducer with filtering function, which has the technical proposal that the main valve body is provided with a gas baffle in the middle part, the lower part of the gas baffle is communicated with the input port of the main valve body, and the upper part of the gas baffle is communicated with the output port of the main valve body; the air baffle plate is connected with an air pipe, the main valve body is also provided with an upper end cover and a lower end cover, an adjusting cavity is formed between the upper end cover and the main valve body, the bottom of the adjusting cavity is provided with a sealing plate, a large piston capable of moving up and down is arranged above the sealing plate, a small piston is arranged below the sealing plate, and the lower end of the small piston is also connected with a valve head positioned in the air pipe; a filter cage is arranged in the lower end cover and is inserted and connected with the lower end of the vent pipe; still be equipped with the pilot valve on adjusting the chamber, through the cooperation of the internal piston of pilot valve and main valve, can guarantee output gas's stability, reduce machining error, the setting up of filter cage can increase filter area, improves the filter effect under the big flow-rate circumstances of assurance high pressure to it is more convenient to make the filter cage change.
Description
Technical Field
The utility model relates to a pressure reducer technical field, concretely relates to guide's formula pressure reducer with filtering capability.
Background
The pressure reducer is through adjusting, reduce the export pressure of import pressure to certain needs, and rely on the energy of medium itself, make export pressure stable device, but current pressure reducer can make output gas pressure unstable when the gas pressure of input changes, influence last processing effect, and current pressure reducer can increase the impurity of cassette in with filter medium at the air inlet, improve the life of pressure reducer, but because the constitutional factors, filterable area is limited, can restrict the output of flow, and the filter screen is blockked up by impurity easily, influence the result of use, the filter screen change in the air-intake pipe is inconvenient simultaneously.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, the utility model provides a guide's formula pressure reducer with filtering capability can export the gas of stabilizing atmospheric pressure to the setting of filtering the cage can strengthen the filter effect, and change easily.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a pilot-operated pressure reducer with a filtering function comprises a main valve body and is characterized in that a gas baffle plate is arranged in the middle of the main valve body, the lower side of the gas baffle plate is communicated with an input port of the main valve body, and the upper side of the gas baffle plate is communicated with an output port of the main valve body; the air baffle plate is fixedly connected with an air pipe, one end of the air pipe is positioned above the air baffle plate, and the other end of the air pipe is positioned below the air baffle plate and is used for communicating an input port of the main valve body with an output port of the main valve body; the main valve body is further provided with an upper end cover and a lower end cover, an adjusting cavity is formed between the upper end cover and the main valve body, a sealing plate is arranged at the bottom of the adjusting cavity, a large piston capable of moving up and down is arranged above the sealing plate, a small piston is arranged below the sealing plate, a connecting rod for fixing is arranged between the small piston and the large piston, a fixing plate is further arranged below the sealing plate, a sliding cavity matched with the small piston is arranged on the fixing plate, the lower end of the small piston is further connected with a valve head, and the valve head is located in the vent pipe and used for controlling the gas outlet amount of the vent pipe;
an air inlet cavity is formed between the lower end cover and the main valve body, a filter cage is arranged in the air inlet cavity, and the filter cage is inserted into the lower end of the vent pipe; the regulating cavity is also provided with a pilot valve, and the air inlet of the pilot valve and the input port of the main valve body adopt the same-source high-pressure gas.
The utility model discloses still further set up to, it has the bilayer to cross filter the cage, and the cross-section is the U-shaped, and is provided with the sealing washer between filter cage and the breather pipe.
The utility model discloses still further set up to, all be provided with the mouth shape circle on big piston and the little piston.
The utility model discloses still further set up to, be provided with sealed the pad on the valve head, sealed pad is used for making the breather pipe sealed with the cooperation of the top inner wall of breather pipe.
The utility model discloses still further set up to, the lower end cap is located the lower extreme of the main valve body, and sets up through threaded connection between the lower end cap and the main valve body.
The utility model discloses still further set up to, the upper end cap is located the upper end of the main valve body, and sets up through bolt fixed connection.
The utility model discloses still further set up to, one side of pilot valve still be provided with the needle valve that links to each other with the regulation chamber, the delivery outlet of needle valve links to each other with the delivery outlet of the main valve body
To sum up, the utility model has the advantages that:
1. the pilot valve can output high-pressure gas, after the high-pressure gas output by the pilot valve enters the adjusting cavity, the high-pressure gas acts on the large piston, the large piston descends to push the valve head downwards, the gas outlet of the vent pipe is opened, the gas inlet cavity is communicated with the output port of the main valve body, the gas enters the upper part of the gas baffle plate from the gas inlet cavity, and when the large piston is in a balanced state, the output gas pressure of the main valve body is equal to the gas pressure in the adjusting cavity; when the pressure of the input gas is reduced, the gas pressure in the adjusting cavity is greater than the gas pressure of the output port of the main valve body, and the large piston is pushed downwards under the action of the gas pressure difference, so that the gas outlet of the vent pipe is enlarged, and the gas pressure of the output port of the main valve body is increased; when the air pressure at the output port of the main valve body is overlarge, the small piston drives the large piston to move upwards, and the air outlet of the vent pipe is reduced, so that the air pressure at the output port of the main valve body is reduced, and the output air pressure is ensured to be always stable; the sealed pad that sets up on the valve head can be effectual seals up the breather pipe gas outlet, and when closing the pilot valve, to adjusting the chamber pressure release after, if high-pressure gas still is inputing the chamber of admitting air, then can be through the pressure to the valve head, makes the valve head go upward to seal up the gas outlet of breather pipe, has avoided revealing of gas.
2. The setting of filtering the cage can filter the gas that enters into the intake chamber, the filter area has been increased simultaneously, the structural strength of filter screen has also been improved, can carry out effectual filtration to gas under the high-pressure large-traffic circumstances of having guaranteed, simultaneously, the bottom end cover passes through threaded connection on the main valve body, it also can dismantle through the grafting and connect on the breather pipe to filter the cage, consequently can be through dismantling the bottom end cover, then convenient and fast changes the dismantlement to filtering the cage, it has avoided gas directly to get into in the breather pipe through the gap to filter the sealing washer that sets up between cage and the breather pipe simultaneously, the effectual filter effect that has improved.
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of the present embodiment.
Reference numerals: 1-main valve body; 2-air baffle; 3-a breather pipe; 4-upper end cover; 401-a conditioning chamber; 402-sealing plate; 403-large piston; 404-small piston; 5-lower end cap; 501-an air inlet cavity; 502-a filter cage; 6, fixing a plate; 7-a sliding cavity; 8-valve head; 9-sealing ring; 10-a pilot valve; 11-sealing gasket.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, the embodiment discloses a pilot-operated pressure reducer with a filtering function, which includes a main valve body 1, and is characterized in that a gas baffle 2 is arranged in the middle of the main valve body 1, the lower part of the gas baffle 2 is communicated with an input port of the main valve body 1, and the upper part of the gas baffle 2 is communicated with an output port of the main valve body 1; the air baffle plate 2 is fixedly connected with an air pipe 3, one end of the air pipe 3 is positioned above the air baffle plate 2, and the other end of the air pipe 3 is positioned below the air baffle plate 2 and is used for communicating an input port of the main valve body 1 with an output port of the main valve body 1; the main valve body 1 is further provided with an upper end cover 4 and a lower end cover 5, an adjusting cavity 401 is formed between the upper end cover 4 and the main valve body 1, the bottom of the adjusting cavity 401 is provided with a sealing plate 402, a large piston 403 capable of moving up and down is arranged above the sealing plate 402, a small piston 404 is arranged below the sealing plate 402, a connecting rod 405 for fixing is arranged between the small piston 404 and the large piston 403, a fixing plate 6 is further arranged below the sealing plate 402, a sliding cavity 7 matched with the small piston 404 is arranged on the fixing plate 6, the lower end of the small piston 404 is further connected with a valve head 8, and the valve head 8 is located in the vent pipe 3 and used for controlling the air outlet amount of the vent pipe 3;
an air inlet cavity 501 is formed between the lower end cover 5 and the main valve body 1, a filter cage 502 is arranged in the air inlet cavity 501, and the filter cage 502 is inserted into the lower end of the vent pipe 3; the adjusting cavity 401 is further provided with a pilot valve 10, and an air inlet of the pilot valve 10 and an input port of the main valve body 1 adopt the same-source high-pressure gas.
In this embodiment, the filter cage 502 has two layers, the cross section of the filter cage is U-shaped, and a sealing ring 9 is disposed between the filter cage 502 and the vent pipe 3.
In this embodiment, the large piston 403 and the small piston 404 are both provided with a mouth-shaped ring.
In this embodiment, the valve head 8 is provided with a sealing gasket 11, and the sealing gasket 11 is used for being matched with the inner wall of the top end of the vent pipe 3 to seal the vent pipe 3.
In this embodiment, the lower end cover 5 is located at the lower end of the main valve body 1, and the lower end cover 5 and the main valve body 1 are connected by a thread.
In this embodiment, the upper end cover 4 is located at the upper end of the main valve body 1 and is fixedly connected and arranged through a bolt.
In this embodiment, one side of the pilot valve 10 is further provided with a needle valve connected to the adjusting cavity 401, and an output port of the needle valve is connected to an output port of the main valve body 1.
The working principle is as follows: adjusting the output air pressure of the pilot valve 10, after the high-pressure gas enters the adjusting cavity 401 through the pilot valve 10, pushing the large piston 403 to move downwards to open the air outlet of the vent pipe 3, meanwhile, the high-pressure gas enters the air inlet cavity 501 through the input port of the main valve body 1, enters the vent pipe 3 after being filtered by the U-shaped filter cage 502, and then enters the output port of the main valve body 1 to be discharged outwards, when the output air pressure is greater than the air pressure in the adjusting cavity 401, the large piston moves upwards under the action of pressure difference, and the control valve head 8 reduces the air outlet amount of the vent pipe 3, so that the output air pressure is reduced, and similarly, when the output air pressure is less than the air pressure in the adjusting cavity 3, the air outlet amount of the vent pipe is increased, and the output pressure is increased; when the filter cage 502 needs to be replaced, the lower end cover 5 is rotated to be separated from the main valve body 1, then the filter cage 502 is detached from the vent pipe 3 for replacement, and finally the lower end cover 5 is connected with the main valve body 1; the process of disassembling, assembling and replacing is simple and convenient, and the replacement time of the filter cage 502 is reduced.
The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, any modification, equivalent replacement, or improvement made within the design concept of the present invention should be included within the protection scope of the present invention.
Claims (7)
1. A pilot-operated pressure reducer with a filtering function comprises a main valve body (1), and is characterized in that a gas baffle plate (2) is arranged in the middle of the main valve body (1), the lower part of the gas baffle plate (2) is communicated with an input port of the main valve body (1), and the upper part of the gas baffle plate (2) is communicated with an output port of the main valve body (1); the air baffle plate (2) is fixedly connected with an air pipe (3), one end of the air pipe (3) is positioned above the air baffle plate (2), and the other end of the air pipe is positioned below the air baffle plate (2) and is used for communicating an input port of the main valve body (1) with an output port of the main valve body (1); the main valve body (1) is also provided with an upper end cover (4) and a lower end cover (5), an adjusting cavity (401) is formed between the upper end cover (4) and the main valve body (1), a sealing plate (402) is arranged at the bottom of the adjusting cavity (401), a large piston (403) capable of moving up and down is arranged above the sealing plate (402), a small piston (404) is arranged below the sealing plate (402), a connecting rod (405) for fixing is arranged between the small piston (404) and the large piston (403), a fixed plate (6) is arranged below the sealing plate (402), a sliding cavity (7) matched with the small piston (404) is arranged on the fixed plate (6), the lower end of the small piston (404) is also connected with a valve head (8), and the valve head (8) is positioned in the vent pipe (3) and used for controlling the gas output of the vent pipe (3);
an air inlet cavity (501) is formed between the lower end cover (5) and the main valve body (1), a filter cage (502) is arranged in the air inlet cavity (501), and the filter cage (502) is inserted into the lower end of the vent pipe (3); the adjusting cavity (401) is further provided with a pilot valve (10), and a gas inlet of the pilot valve (10) and an input port of the main valve body (1) adopt homologous high-pressure gas.
2. A filter-functioning pilot operated pressure reducer according to claim 1 wherein the filter cage (502) has two layers with a U-shaped cross-section and a sealing ring (9) is arranged between the filter cage (502) and the vent pipe (3).
3. A filter-enabled pilot-operated pressure reducer according to claim 1, characterized in that the large piston (403) and the small piston (404) are provided with mouth-shaped rings.
4. The pilot-operated pressure reducer with filtering function according to claim 1, wherein the valve head (8) is provided with a gasket (11), and the gasket (11) is used for matching with the top inner wall of the vent pipe (3) to seal the vent pipe (3).
5. A filter-functioning pilot-operated pressure reducer according to claim 1, wherein the lower end cap (5) is located at the lower end of the main valve body (1), and the lower end cap (5) and the main valve body (1) are provided by a screw connection.
6. A filter-functioning pilot operated pressure reducer according to claim 1 wherein the upper end cap (4) is located at the upper end of the main valve body (1) and is fixedly attached by bolts.
7. A filter-functioning pilot pressure reducer according to claim 1 characterized in that the pilot valve (10) is further provided with a needle valve on one side connected to the regulation chamber (401), the outlet of the needle valve being connected to the outlet of the main valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121786499.5U CN215258033U (en) | 2021-07-31 | 2021-07-31 | Pilot-operated pressure reducer with filtering capability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121786499.5U CN215258033U (en) | 2021-07-31 | 2021-07-31 | Pilot-operated pressure reducer with filtering capability |
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| Publication Number | Publication Date |
|---|---|
| CN215258033U true CN215258033U (en) | 2021-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121786499.5U Active CN215258033U (en) | 2021-07-31 | 2021-07-31 | Pilot-operated pressure reducer with filtering capability |
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| CN (1) | CN215258033U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116464812A (en) * | 2023-06-19 | 2023-07-21 | 余姚市三力信电磁阀有限公司 | High-pressure intelligent grading pressure regulating valve and control method |
-
2021
- 2021-07-31 CN CN202121786499.5U patent/CN215258033U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116464812A (en) * | 2023-06-19 | 2023-07-21 | 余姚市三力信电磁阀有限公司 | High-pressure intelligent grading pressure regulating valve and control method |
| CN116464812B (en) * | 2023-06-19 | 2023-09-05 | 余姚市三力信电磁阀有限公司 | High-pressure intelligent grading pressure regulating valve and control method |
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