CN204420295U - A kind of vacuum corrugated pipe realizes the reduction valve that delivery pressure is absolute pressure - Google Patents
A kind of vacuum corrugated pipe realizes the reduction valve that delivery pressure is absolute pressure Download PDFInfo
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- CN204420295U CN204420295U CN201420776731.0U CN201420776731U CN204420295U CN 204420295 U CN204420295 U CN 204420295U CN 201420776731 U CN201420776731 U CN 201420776731U CN 204420295 U CN204420295 U CN 204420295U
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Abstract
The utility model relates to a kind of reduction valve, and specifically a kind of vacuum corrugated pipe realizes the reduction valve that delivery pressure is absolute pressure.Solve the problem that reduction valve can not export absolute pressure, a kind of vacuum corrugated pipe realizes the reduction valve that delivery pressure is absolute pressure, comprise fixing seal seat, valve assembly, housing, screw-in connect nozzle assembly, valve base assembly, push rod, vacuum corrugated pipe assembly and adjusting seat, the pressure of output of the present utility model is absolute pressure, can ensure that under any atmosphere environment the force value exported is constant, be conducive to monitoring delivery pressure in a vacuum or under environment under low pressure, do not need to carry out conversion pressure.
Description
Technical field
The utility model relates to a kind of reduction valve, and specifically a kind of vacuum corrugated pipe realizes the reduction valve that delivery pressure is absolute pressure.
Background technique
Reduction valve is by regulating, inlet pressure being reduced to the outlet pressure of a certain needs, and rely on the energy of medium itself, make the valve that outlet pressure keeps stable automatically.From hydromechanical viewpoint, reduction valve is the throttle element that a local resistance can change, and namely by changing orifice size, the kinetic energy of flow velocity and fluid being changed, causes the different pressure losses, thus reach the object of decompression.Then rely on the adjustment of control and regulation system, the fluctuation of downstream pressure and spring force are balanced each other, makes downstream pressure keep constant in certain margin of error.
Traditional reduction valve, the pressure of output is relative pressure, and under any atmosphere environment, ensure that the relative pressure exported is constant, the absolute pressure value of its delivery pressure need carry out conversion pressure, and the absolute pressure value after conversion can change along with the change of external environment.
Summary of the invention
The utility model can not export the problem of absolute pressure in order to solve reduction valve, provide a kind of vacuum corrugated pipe to realize reduction valve that delivery pressure is absolute pressure.
The utility model takes following technological scheme: a kind of vacuum corrugated pipe realizes the reduction valve that delivery pressure is absolute pressure, comprise fixing seal seat, valve assembly, housing, screw-in connect nozzle assembly, valve base assembly, push rod, vacuum corrugated pipe assembly and adjusting seat, housing is provided with 4, upper and lower, left and right opening, enclosure interior comprises the large cavity on top and the little cavity of bottom, the junction of large cavity and little cavity is provided with valve base assembly, valve base assembly by sunk screw and housing fastening and sealed by seal ring II.
Housing lower opening is provided with fixing seal seat, and fixing seal seat is sealed by seal ring I, is provided with groove, is provided with valve assembly in groove in fixing seal seat, is provided with shutter spring between valve assembly and fixing seal seat.
The opening of housing arranged on left and right sides is respectively equipped with screw-in and connects nozzle assembly, and screw-in connects nozzle assembly and sealed by sealing gasket, and screw-in connects nozzle assembly and is communicated with the little cavity in housing.
Opening above housing is provided with adjusting seat, adjusting seat is by the seal with elastometic washer of O type, the both sides of housing upper are provided with screw, being provided with in screw can the Cock screw of fastening adjusting seat, the partial fixing that adjusting seat is positioned at case inside has vacuum corrugated pipe assembly, vacuum corrugated pipe assembly bottom is connected with ejector pin contact, and push rod is connected with valve assembly through valve base assembly.
Compared with prior art, the pressure of the utility model outlet monitoring is absolute pressure, when external pressure is vacuum state, the pressure that reduction valve exports is absolute pressure, external pressure is not vacuum state, and the absolute pressure that reduction valve exports is that outlet pressure adds external pressure, in order to auto-compensation ambient pressure environment is on the impact of delivery pressure, outlet pressure sense device is designed to vacuum corrugated pipe assembly, in order to compensate the change of the delivery pressure that ambient pressure environment is brought.So no matter how ambient pressure environment changes, and the delivery pressure measured is absolute pressure, and ensures that delivery pressure is relatively stable.
The pressure of output of the present utility model is absolute pressure, can ensure that the force value exported is constant, be conducive in a vacuum or monitor (not needing to carry out conversion pressure) delivery pressure under environment under low pressure under any atmosphere environment.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is utility model works schematic diagram;
1-fixing seal seat in figure, 2-shutter spring, 3-valve assembly, 4-seal ring I, 5-housing, 6-sealing gasket, 7-screws in and connects nozzle assembly, 8-seal ring II, 9-valve base assembly, 10-sunk screw, 11-push rod, 12-0 shape rubber ring, 13-Cock screw, 14-vacuum corrugated pipe assembly, 15-adjusting seat.
Embodiment
As shown in Figure 1, a kind of vacuum corrugated pipe realizes the reduction valve that delivery pressure is absolute pressure, comprise fixing seal seat 1, valve assembly 3, housing 5, screw-in connects nozzle assembly 7, valve base assembly 9, push rod 11, vacuum corrugated pipe assembly 14 and adjusting seat 15, housing 5 is provided with, under, left, right 4 openings, housing 5 inside comprises the large cavity on top and the little cavity of bottom, the junction of large cavity and little cavity is provided with valve base assembly 9, valve base assembly 9 is fastening and sealed by seal ring II8 by sunk screw 10 and housing 5, housing 5 lower opening is provided with fixing seal seat 1, fixing seal seat 1 is sealed by seal ring I4, groove is provided with in fixing seal seat 1, valve assembly 3 is provided with in groove, shutter spring 2 is provided with between valve assembly 3 and fixing seal seat 1, the opening of housing 5 arranged on left and right sides is respectively equipped with screw-in and connects nozzle assembly 7, and screw-in connects nozzle assembly 7 and sealed by sealing gasket 6, and screw-in connects nozzle assembly 7 and is communicated with the little cavity in housing 5, opening above housing 5 is provided with adjusting seat 15, adjusting seat 15 is sealed by O type rubber ring 12, the both sides on housing 5 top are provided with screw, being provided with in screw can the Cock screw 13 of fastening adjusting seat 15, adjusting seat 15 partial fixing be positioned at inside housing 5 has vacuum corrugated pipe assembly 14, vacuum corrugated pipe assembly 14 bottom is connected with push rod 11, and push rod 11 is connected with valve assembly 3 through valve base assembly 9.
Technical solution of the present utility model is, the decrement of shutter spring 2 is adjusted by fixing seal seat 1, the pre-compression force that shutter spring 2 produces acts on valve assembly 3, governor valve spring 2 and valve assembly 3 is come by adjusting seat 15, the initial position of vacuum corrugated pipe assembly 14, control the opening and closing of valve according to the force value of inlet/outlet gas, automatically realize the stable output of outlet pressure.Seal ring I4 and O shape circle 12 seal guarantee tightness.Shutter spring 2 active force makes the rubber on valve assembly 3 contact with valve port and alternating compression, ensures the closed of valve assembly 3.
Regulated the decrement of vacuum corrugated pipe assembly 14 by adjusting seat 15, adjust and set different delivery pressure values.Initial position, the original state of valve assembly 3 is often opened.In outlet pressure progressively increase process, the power that the outlet pressure of reduction valve acts on vacuum corrugated pipe assembly 14 progressively increases, when increasing to the active force being greater than vacuum corrugated pipe assembly 14, valve assembly 3 toward top offset, valve closes.In outlet pressure progressively reduction process, the power that the outlet pressure of reduction valve acts on vacuum corrugated pipe assembly 14 progressively reduces, when being decreased to the active force being less than vacuum corrugated pipe assembly 14, by the active force valve assembly 3 of vacuum corrugated pipe assembly 14 toward bottom offset, valve assembly 3 is opened, valve open, gas inwardly enters from suction port, ensures that the pressure at air outlet place remains in the scope of setting.
The pressure of reduction valve outlet monitoring is absolute pressure, when external pressure is vacuum state, the pressure that reduction valve exports is absolute pressure, external pressure is not vacuum state, the absolute pressure that reduction valve exports is that outlet pressure adds external pressure, in order to auto-compensation ambient pressure environment is on the impact of delivery pressure, outlet pressure sense device is designed to vacuum corrugated pipe assembly, in order to compensate the change of the delivery pressure that ambient pressure environment is brought.So no matter how ambient pressure environment changes, and the delivery pressure measured is absolute pressure, and ensures that delivery pressure is relatively stable.
Claims (1)
1. one kind realizes with vacuum corrugated pipe the reduction valve that delivery pressure is absolute pressure, it is characterized in that: comprise fixing seal seat (1), valve assembly (3), housing (5), screw-in connects nozzle assembly (7), valve base assembly (9), push rod (11), vacuum corrugated pipe assembly (14) and adjusting seat (15), housing (5) is provided with, under, left, right 4 openings, housing (5) inside comprises the large cavity on top and the little cavity of bottom, the junction of large cavity and little cavity is provided with valve base assembly (9), valve base assembly (9) by sunk screw (10) and housing (5) fastening and by seal ring II(8) seal,
Housing (5) lower opening is provided with fixing seal seat (1), fixing seal seat (1) is by seal ring I(4) sealing, fixing seal seat is provided with groove in (1), is provided with valve assembly (3) in groove, is provided with shutter spring (2) between valve assembly (3) and fixing seal seat (1);
The opening of housing (5) arranged on left and right sides is respectively equipped with screw-in and connects nozzle assembly (7), and screw in and connect nozzle assembly (7) by sealing gasket (6) sealing, screw-in connects nozzle assembly (7) and is communicated with the little cavity in housing (5);
The opening of housing (5) top is provided with adjusting seat (15), adjusting seat (15) is sealed by O type rubber ring (12), the both sides on housing (5) top are provided with screw, being provided with in screw can the Cock screw (13) of fastening adjusting seat (15), the partial fixing that adjusting seat (15) is positioned at housing (5) inner side has vacuum corrugated pipe assembly (14), vacuum corrugated pipe assembly (14) bottom contacts with push rod (11) and connects, and push rod (11) is connected with valve assembly (3) through valve base assembly (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420776731.0U CN204420295U (en) | 2014-12-11 | 2014-12-11 | A kind of vacuum corrugated pipe realizes the reduction valve that delivery pressure is absolute pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420776731.0U CN204420295U (en) | 2014-12-11 | 2014-12-11 | A kind of vacuum corrugated pipe realizes the reduction valve that delivery pressure is absolute pressure |
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| Publication Number | Publication Date |
|---|---|
| CN204420295U true CN204420295U (en) | 2015-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420776731.0U Active CN204420295U (en) | 2014-12-11 | 2014-12-11 | A kind of vacuum corrugated pipe realizes the reduction valve that delivery pressure is absolute pressure |
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| CN (1) | CN204420295U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106641355A (en) * | 2016-12-12 | 2017-05-10 | 太原航空仪表有限公司 | Method for achieving hard sealing of elastic valve combination device |
| CN115899341A (en) * | 2023-02-27 | 2023-04-04 | 新乡市华航航空液压设备有限公司 | Novel take automatic function of breathing in absolute pressure relief pressure valve |
-
2014
- 2014-12-11 CN CN201420776731.0U patent/CN204420295U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106641355A (en) * | 2016-12-12 | 2017-05-10 | 太原航空仪表有限公司 | Method for achieving hard sealing of elastic valve combination device |
| CN106641355B (en) * | 2016-12-12 | 2018-11-27 | 太原航空仪表有限公司 | A method of realizing that elastic valve combination body device seals firmly |
| CN115899341A (en) * | 2023-02-27 | 2023-04-04 | 新乡市华航航空液压设备有限公司 | Novel take automatic function of breathing in absolute pressure relief pressure valve |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |