CN110017400B - Electromagnetic valve capable of reducing valve opening noise - Google Patents
Electromagnetic valve capable of reducing valve opening noise Download PDFInfo
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- CN110017400B CN110017400B CN201810022738.6A CN201810022738A CN110017400B CN 110017400 B CN110017400 B CN 110017400B CN 201810022738 A CN201810022738 A CN 201810022738A CN 110017400 B CN110017400 B CN 110017400B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetically Actuated Valves (AREA)
- Details Of Valves (AREA)
Abstract
The invention discloses a solenoid valve for reducing valve opening noise, which comprises a valve seat and a piston part, wherein the valve seat is provided with an inlet, an outlet and a main valve cavity communicated with the inlet and the outlet, the outlet is communicated with the main valve cavity through a main valve opening, the piston part is arranged in the main valve cavity, the piston part comprises a piston for opening and closing the main valve opening and a piston spring connected with the piston, the piston is provided with a main valve hole communicated with an upper cavity and a lower cavity of the main valve cavity, the piston is provided with a pressure control valve hole communicated with the upper cavity and the lower cavity of the main valve cavity at the position avoiding the main valve hole, a pressure control valve is arranged in the pressure control valve hole, when the pressure difference between the inlet and the outlet is higher than a set value, a pilot valve is opened and matched with the pressure control valve, the pressure difference is gradually relieved, and when the pressure difference between the inlet and the outlet is reduced to be lower than the set pressure, the main valve is opened. The invention solves the problem of overlarge fluid action noise at the opening moment of the main valve under high pressure difference.
Description
Technical Field
The invention relates to the technical field of valves, in particular to an electromagnetic valve.
Background
After the pilot valve is opened under high pressure difference, the common electromagnetic valve is immediately opened along with the main valve, and when the pressure difference is higher, the common electromagnetic valve is directly opened, the instantaneous action noise of the valve opening is high, and the common electromagnetic valve is not suitable for the requirement of the vehicle environment on the comfort level and influences the user experience.
Disclosure of Invention
The invention aims to solve the technical problem of providing an electromagnetic valve capable of reducing valve opening noise.
In order to solve the technical problems, the invention adopts the following technical scheme: a solenoid valve for reducing valve opening noise comprises a valve seat and a piston part, wherein the valve seat is provided with an inlet, an outlet and a main valve cavity communicated with the inlet and the outlet, the outlet is communicated with the main valve cavity through a main valve opening, the piston part is arranged in the main valve cavity and comprises a piston for opening and closing the main valve opening and a piston spring connected with the piston, the piston is provided with a main valve hole communicated with an upper cavity and a lower cavity of the main valve cavity, the upper part of the main valve hole is provided with a valve guide opening, the upper part of the valve seat is connected with a pilot valve component for controlling the valve guide opening, the piston is provided with a pressure control valve hole communicated with the upper cavity and the lower cavity of the main valve cavity at the position where the main valve avoids the main valve hole, a pressure control valve is arranged in the pressure control valve hole, and when the pressure difference between the inlet and the outlet is higher than a set value, the pilot valve is opened and is matched with the pressure control valve to gradually release the pressure difference, when the pressure difference between the inlet and the outlet is reduced to be lower than the set pressure, the main valve is opened.
Preferably, the pressure control valve comprises a pressure control valve needle installed in the pressure control valve hole and a pressure control valve needle spring connected with the pressure control valve needle, and the pressure control valve needle is provided with a pressure control valve needle hole.
Preferably, the pressure control valve hole comprises a threaded hole at the upper part and a large balance hole at the bottom, the threaded hole is internally threaded with a nut, and the spring force of the pressure control valve needle is adjusted by adjusting the screwing depth of the nut, so that the opening pressure difference of the pressure control valve needle is controlled, and the opening pressure of the main valve is adjusted.
Preferably, the nut is provided with an inner hole communicated with the pressure control valve needle hole, and the upper part of the nut is provided with a notch communicated with the inner hole.
Preferably, the pressure control valve needle is provided with a small balance hole, and when the pressure difference between the two ends of the piston is smaller than a set pressure value, the pressure control valve needle closes the large balance hole to realize the throttling circulation of the small balance hole.
Preferably, the piston is provided with a small balance hole communicating the upper cavity and the lower cavity of the valve cavity, and when the pressure difference between the two ends of the piston is smaller than a set pressure value, the pressure control valve needle closes the large balance hole to realize the throttling circulation of the small balance hole.
Preferably, the upper end of the main valve hole is provided with a positioning step opening, a guide valve pad is installed in the positioning step opening, and the guide valve opening is arranged on the guide valve pad.
Preferably, the upper end face of the piston is provided with a flange around the upper end of the main valve hole, and the flange fixes the pilot valve pad in the positioning step opening through riveting.
Preferably, the upper portion of disk seat is equipped with the valve gap, the pilot valve subassembly include with valve gap fixed connection's sleeve pipe, fix on sleeve pipe upper portion head, fix the quiet iron core of sleeve pipe lower part, can be in intraductal gliding core iron and pilot valve needle of sleeve pipe, the core iron is connected with the core iron spring, and the upper end of pilot valve needle and the butt of core iron spring lower extreme, be equipped with the answer spring between quiet iron core and the core iron, the coil assembly is installed to the sleeve pipe outside.
Preferably, the upper opening of the valve seat is provided with internal threads, the valve cover threads are screwed on the internal threads, and the upper end face of the valve cover is flush with the upper end face of the valve seat.
The technical scheme adopted by the invention is that a pressure control valve is added on a piston, when the differential pressure is higher than a set value, a pilot valve is opened, a main valve is not opened, the gradual pressure relief of the differential pressure in front of and behind the valve is realized, when the pressure at two ends of an electromagnetic valve is reduced to be lower than the set pressure, the opening of the main valve is realized, and the differential pressure in front of and behind the opening of the main valve is ensured to be smaller than the set value, so that the problem of overlarge fluid action noise at the opening moment of the main valve under the high differential pressure is solved, and the noise disturbance at the opening moment can be effectively reduced when the main valve is opened under the low differential pressure.
Drawings
The invention is further described with reference to the accompanying drawings and the detailed description below:
FIG. 1 is a schematic structural view of a solenoid valve of the present invention;
FIG. 2 is a schematic structural view of a piston member;
FIG. 3 is a schematic view of the piston construction;
FIG. 4 is a schematic diagram of the construction of a pressure control valve needle;
FIG. 5 is a front view of the nut;
fig. 6 is a cross-sectional view of the nut.
In the figure: 1-end socket, 2-core iron, 3-sleeve, 4-guide valve needle, 5-static iron core, 6-valve cover, 7-valve needle spring, 8-pressure control valve needle, 9-nut, 10-piston, 11-piston spring, 12-valve seat, 13-core iron spring, 14-return spring, 15-guide valve pad, 16-snap spring, 17-piston ring, 18-O-shaped ring, 19-sealing pad, 20-gasket, 21-main valve hole, 22-guide valve port, 23-large balance hole, 24-small balance hole, 25-pressure control valve needle hole and 26-notch.
Detailed Description
The technical solutions of the embodiments of the present invention are explained and illustrated below with reference to the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.
The electromagnetic valve for reducing the valve opening noise as shown in fig. 1 comprises a valve seat 12 and a piston part, wherein a main valve cavity with an inlet, an outlet, an inlet and an outlet is arranged on the valve seat 12, the outlet is communicated with the main valve cavity through a main valve port, the piston part is arranged in the main valve cavity, the piston part comprises a piston 10 for opening and closing the main valve port and a piston spring 11 connected with the piston, and the piston 10 divides the main valve cavity into an upper cavity and a lower cavity.
Referring to fig. 2 and 3, a clamping groove is formed in the outer circle of the piston 10, a clamp spring 16 and a piston ring 17 are connected in the clamping groove, a sealing groove is formed in the bottom of the piston, a sealing gasket 19 and a gasket 20 are connected in the sealing groove, and the sealing gasket 19 and the gasket 20 are fixed by riveting the inner edge of the sealing groove. The piston 10 is provided with a main valve hole 21 communicating an upper cavity and a lower cavity of the main valve cavity, the upper part of the main valve hole is provided with a pilot valve port 22, the upper part of the valve seat is connected with a pilot valve component for controlling the pilot valve port, the piston is provided with a pressure control valve hole communicating the upper cavity and the lower cavity of the main valve cavity at the position avoiding the main valve hole, a pressure control valve is arranged in the pressure control valve hole, when the pressure difference between an inlet and an outlet is higher than a set value, the pilot valve is opened and is matched with the pressure control valve to realize gradual pressure relief of the pressure difference, and when the pressure difference between the inlet and the outlet is reduced to be lower than the set pressure, the opening of the main valve is realized.
Wherein, the pressure control valve comprises a pressure control valve needle 8 arranged in the pressure control valve hole and a pressure control valve needle spring 7 connected with the pressure control valve needle 8.
Referring to fig. 2 to 4, the pressure control needle 8 is provided with a pressure control needle hole 25. The pressure control valve hole 25 includes a threaded hole at the upper portion and a large balance hole 23 at the bottom portion. The threaded hole is internally threaded with a nut 9, and the acting force of the pressure control valve needle spring 7 is adjusted through the screwing depth of the adjusting nut 9, so that the opening pressure difference of the pressure control valve needle 8 is controlled, and the opening pressure of the main valve is adjusted. During assembly, the tightening height of the nut 9 is determined, and the opening pressure difference P of the main valve is determined0. And the set pressure can be accurately adjusted through the pressure control valve to match different systems, so that the universality is improved. The value can comprehensively consider comprehensive factors such as pressure relief pressure, noise, flow and the like, so that the opening process under different pressures is intelligently realized, and the action noise disturbance is reduced.
Referring to fig. 4, the pressure control valve needle 8 is provided with a small balance hole 24, and when the pressure difference between the two ends of the piston 10 is smaller than a set pressure value, the pressure control valve needle 8 closes the large balance hole 23, so that the small balance hole 24 is throttled and circulated.
Referring to fig. 5 and 6, the nut 9 is provided with an inner hole communicated with the pressure control valve needle hole 25, and the upper part of the nut is provided with a notch 26 communicated with the inner hole, and the notch is in a straight shape and is convenient for adjusting the nut by a screwdriver.
It will be understood by those skilled in the art that the position of the small balance hole can be changed, for example, the small balance hole communicating the upper chamber and the lower chamber of the valve chamber is formed on the piston 10, and when the pressure difference between the two ends of the piston is smaller than the set pressure value, the pressure control valve needle closes the large balance hole, so as to realize the throttling circulation of the small balance hole.
In addition, referring to fig. 2 and 3, a positioning step opening is formed in the upper end of the main valve hole 21, a pilot valve pad 15 is installed in the positioning step opening, and the pilot valve opening 22 is formed in the pilot valve pad 15, so that the main valve hole 21 and the pilot valve opening 22 can be conveniently machined. The upper end face of the piston is provided with a flange around the upper end of the main valve hole, and the flange fixes the guide valve pad 15 in the positioning step opening through riveting, so that the guide valve pad 15 is convenient to fix.
Referring to fig. 1, the upper opening of the valve seat 12 is provided with internal threads, the valve cover 6 is screwed tightly with the internal threads, and an O-ring 18 is arranged between the valve cover 6 and the inner wall of the upper opening to form a seal. The pilot valve component comprises a sleeve 3 fixedly connected with the valve cover 6, an end socket 1 fixed on the upper portion of the sleeve, a static iron core 5 fixed on the lower portion of the sleeve, a core iron 2 and a pilot valve needle 4 which can slide in the sleeve 3, wherein the core iron 2 is connected with a core iron spring 13, the upper end of the pilot valve needle 4 is abutted against the lower end of the core iron spring 13, a return spring 14 is arranged between the static iron core 5 and the core iron 2, a coil assembly is installed on the outer side of the sleeve, and the upper end face of the valve cover is parallel and level to the upper end face of the valve seat so as to install the coil assembly. When the valve is opened, the coil assembly is electrified, the core iron 2 is attracted upwards, when the valve is closed, the coil assembly is powered off, the core iron 2 moves downwards under the action of the core iron spring 13, and meanwhile, the guide valve needle 4 closes the guide valve port 22.
The following explains the valve opening process of the electromagnetic valve of the invention:
when the pressure difference between the inlet and the outlet is higher than P0A time valve opening process:
at the moment, the pilot valve is opened, the upper piston cavity is decompressed, and the pressure difference between the upper piston cavity and the lower piston cavity is higher than the pressure value set by the pressure control valve due to the higher pressure difference between the inlet and the outlet, so that the pressure control valve needle 8 moves upwards against the force of the pressure control valve needle spring 7, the large balance hole 23 is opened, the decompression of the upper piston cavity and the lower piston cavity is realized, the piston part cannot move upwards, the main valve is still in a closed state, fluid flows into the pressure control valve needle hole 25 through the large balance hole 23 and then flows to the upper piston cavity through the nut 9, the other path flows to the upper piston cavity through the small balance hole 24 and the nut 9 and then flows to the outlet through the valve guide port 22, and the process is a decompression process;
with the opening of the pilot valve, the pressure difference between the inlet and the outlet is slowly reduced to a set value P0The pressure difference between the upper and lower cavities of the piston is reduced to be below a set value, so that the action of the pressure control valve needle spring 7 is greater than the pressure difference applied to the pressure control valve needle 8, the pressure control valve needle 8 moves downwards to close the large balance hole 23, and the fluid flows to the upper cavity of the piston through the small balance hole 24 at the position of the pressure control valve needle, so that effective throttling is realized, the pressure difference between the upper and lower cavities of the piston is ensured, the downward pressure difference applied to the piston component is reduced due to the fact that the pressure difference between the inlet and the outlet is small, the upward pressure difference is higher than the downward pressure difference, and the upward resultant force applied to the piston component is realized, so that the opening of the main valve is realized.
Above is a pressure difference higher than P0When the pressure difference is reduced to a set value, the main valve is opened, so that the fluid impact noise generated by directly opening the main valve under high pressure difference is greatly reduced.
When the pressure difference between the inlet and the outlet is lower than P0A time valve opening process:
because the pressure difference between the inlet and the outlet is less than the set value P0When the pilot valve is opened, the upper piston cavity is decompressed, the pressure difference between the upper piston cavity and the lower piston cavity is increased, fluid is throttled through the small balance hole 24 at the position of the pressure hole control valve needle, and the pressure difference between the upper piston cavity and the lower piston cavity is smaller than the set pressure value of the pressure control valve needle 8 for opening the pressure control valve, so that the pressure control valve needle 8 cannot move upwards, the upward pressure difference force of the piston part is larger than the downward pressure difference force at the moment, and the piston part moves upwards along with the downward pressure difference force, so that the opening of the main valve is realized.
Above is a differential pressure below P0The starting process is consistent with that of a common pilot-operated solenoid valve, the reversing action noise of the solenoid valve is acceptable under low pressure difference, special treatment is not needed, the reliability and the quick response of the valve opening of the solenoid valve under the low pressure difference are ensured, and the function of opening the main valve after pressure relief is realized when the reversing fluid noise generates obvious disturbance only when the pressure difference is too high, so that the reversing noise is reduced. And the set value P0The adjustable noise reduction device can be adjusted and set according to the requirements of different systems, can be matched with different systems and different maximum noise requirements for adjustment, and achieves the purpose of parts universality under different requirements to the maximum extent.
While the invention has been described with reference to specific embodiments thereof, it will be understood by those skilled in the art that the invention is not limited thereto, and may be embodied in many different forms without departing from the spirit and scope of the invention as set forth in the following claims. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.
Claims (9)
1. The utility model provides a reduce solenoid valve of opening valve noise, includes disk seat, piston part, set up the main valve chamber of import, export, intercommunication import and export on the disk seat, the export communicates with the main valve chamber through the main valve mouth, piston part locates the main valve intracavity, piston part is including the piston that is used for opening and close the main valve mouth and the piston spring who is connected with the piston, be equipped with the main valve hole that communicates main valve chamber epicoele and lower chamber on the piston, the upper portion in main valve hole is equipped with the guide valve mouth, the upper portion of disk seat is connected with the pilot valve subassembly that is used for controlling the guide valve mouth, its characterized in that: the piston is in avoiding main valve hole position and offering the upper chamber of intercommunication main valve chamber and the pressure control valve opening of cavity of resorption, be equipped with the pressure control valve in the pressure control valve opening, when import and export pressure differential are higher than the setting value, the pilot valve is opened and is cooperated with the pressure control valve, realizes the pressure release gradually of pressure differential, when the import and export pressure differential reduce below the settlement pressure, realizes that the main valve opens, the pressure control valve is including installing the pressure control valve needle in the pressure control valve opening and the pressure control valve needle spring of being connected with the pressure control valve needle, the last pressure control valve needle hole of having seted up of pressure control valve needle.
2. The electromagnetic valve for reducing valve-opening noise according to claim 1, wherein: the pressure control valve hole comprises a threaded hole in the upper portion and a large balance hole in the bottom portion, the threaded hole is connected with a nut in a threaded mode, the spring force of the pressure control valve needle is adjusted through the screwing depth of the adjusting nut, and therefore the opening pressure difference of the pressure control valve needle is controlled, and the opening pressure of the main valve is adjusted.
3. The electromagnetic valve for reducing valve-opening noise according to claim 2, wherein: the nut is provided with an inner hole communicated with the pressure control valve needle hole, and the upper part of the nut is provided with a notch communicated with the inner hole.
4. A valve opening noise reducing electromagnetic valve according to claim 3, wherein: the pressure control valve needle is provided with a small balance hole, and when the pressure difference between the two ends of the piston is smaller than a set pressure value, the pressure control valve needle closes the large balance hole to realize the throttling circulation of the small balance hole.
5. The electromagnetic valve for reducing valve-opening noise according to claim 2, wherein: the piston is provided with a small balance hole which is communicated with an upper cavity and a lower cavity of the valve cavity, and when the pressure difference between the two ends of the piston is smaller than a set pressure value, the pressure control valve needle closes the large balance hole to realize the throttling circulation of the small balance hole.
6. The electromagnetic valve for reducing valve-opening noise according to claim 1, wherein: the upper end of the main valve hole is provided with a positioning step opening, a guide valve pad is installed in the positioning step opening, and the guide valve opening is arranged on the guide valve pad.
7. The electromagnetic valve for reducing valve-opening noise according to claim 6, wherein: and a flange is arranged on the upper end surface of the piston and surrounds the upper end of the main valve hole, and the flange fixes the pilot valve pad in the positioning step opening through riveting.
8. The electromagnetic valve for reducing valve-opening noise according to any one of claims 1 to 7, wherein: the upper portion of disk seat is equipped with the valve gap, the pilot valve subassembly include with valve gap fixed connection's sleeve pipe, fix sleeve pipe upper portion head, fix the quiet iron core of sleeve pipe lower part, can be in intraductal gliding core iron and pilot valve needle of sleeve pipe, the core iron is connected with the core iron spring, leads the upper end and the butt of core iron spring lower extreme of needle, be equipped with the answer spring between quiet iron core and the core iron, the coil assembly is installed to the sleeve pipe outside.
9. The electromagnetic valve for reducing valve-opening noise according to claim 8, wherein: the upper opening of the valve seat is provided with internal threads, the valve cover threads are screwed on the internal threads, and the upper end face of the valve cover is flush with the upper end face of the valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810022738.6A CN110017400B (en) | 2018-01-10 | 2018-01-10 | Electromagnetic valve capable of reducing valve opening noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810022738.6A CN110017400B (en) | 2018-01-10 | 2018-01-10 | Electromagnetic valve capable of reducing valve opening noise |
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| Publication Number | Publication Date |
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| CN110017400A CN110017400A (en) | 2019-07-16 |
| CN110017400B true CN110017400B (en) | 2021-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810022738.6A Active CN110017400B (en) | 2018-01-10 | 2018-01-10 | Electromagnetic valve capable of reducing valve opening noise |
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| CN (1) | CN110017400B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021136022A1 (en) * | 2020-01-03 | 2021-07-08 | 浙江盾安人工环境股份有限公司 | Electromagnetic valve |
| CN113074256B (en) * | 2020-01-03 | 2023-05-16 | 盾安环境技术有限公司 | Electromagnetic valve |
| JP7534645B2 (en) | 2021-08-25 | 2024-08-15 | 浜名湖電装株式会社 | Solenoid valve and control device for working fluid using the solenoid valve |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4052881B2 (en) * | 2002-06-04 | 2008-02-27 | 株式会社テージーケー | 3-way selector valve |
| JP2004360876A (en) * | 2003-06-09 | 2004-12-24 | Tgk Co Ltd | Three-way valve |
| US8256739B2 (en) * | 2008-12-22 | 2012-09-04 | Husco International, Inc. | Poppet valve operated by an electrohydraulic poppet pilot valve |
| JP5802540B2 (en) * | 2011-12-15 | 2015-10-28 | 株式会社不二工機 | Compound valve |
| CN102506208A (en) * | 2011-12-19 | 2012-06-20 | 铜陵市三圆特种铸造有限责任公司 | Gas electromagnetic valve |
| JP2015075124A (en) * | 2013-10-04 | 2015-04-20 | 株式会社テージーケー | Electromagnetic valve |
| US9841111B2 (en) * | 2014-01-09 | 2017-12-12 | Kyb Corporation | Solenoid valve |
| CN205938095U (en) * | 2016-06-29 | 2017-02-08 | 盾安环境技术有限公司 | Normally open electromagnetic valve |
| CN106065951A (en) * | 2016-07-31 | 2016-11-02 | 浙江盈亿机械股份有限公司 | A kind of piston type pilot control electromagnetic valve |
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