CN108167491B - A kind of No leakage three-way pressure reducing valve - Google Patents
A kind of No leakage three-way pressure reducing valve Download PDFInfo
- Publication number
- CN108167491B CN108167491B CN201711420137.2A CN201711420137A CN108167491B CN 108167491 B CN108167491 B CN 108167491B CN 201711420137 A CN201711420137 A CN 201711420137A CN 108167491 B CN108167491 B CN 108167491B
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- Prior art keywords
- mouthfuls
- valve
- steel ball
- spring
- valve seat
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/26—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in either direction
-
- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/34—Excess-flow valves in which the flow-energy of the flowing medium actuates the closing mechanism
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0245—Construction of housing; Use of materials therefor of lift valves with ball-shaped valve members
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0263—Construction of housing; Use of materials therefor of lift valves multiple way valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention discloses a kind of No leakage three-way pressure reducing valves, it include valve body, A mouthfuls are provided on valve body, P mouthfuls and R mouthfuls, swivel nut is provided in valve body, the first valve seat and the second valve seat are provided in swivel nut, the first steel ball matched with the first valve port is provided in first valve seat, the second steel ball compatible with the second valve port is provided in second valve seat, it is offered on first valve seat and P mouthfuls, the first through flow hole that first valve port is connected, it is provided on second valve seat and R mouthfuls, the second through flow hole that second valve port is connected, the lower part of second valve seat is equipped with push rod, the lower end of the push rod is matched with first steel ball, it is offered on push rod and A mouthfuls, the third through flow hole that second valve port is connected, straight pin is radially provided in swivel nut, the upper end of second steel ball is fixed with mandril, it is provided with above the second valve seat in the top of swivel nut Big spring and compatible big spring seat.The advantage is that: simple and reasonable for structure；Manufacturing cost is low, stable.
Description
Technical field
The present invention relates to pressure reducing valve manufacturing technology field, a kind of especially No leakage three-way pressure reducing valve.
Background technique
Pressure reducing valve is one of indispensable critical elements in hydraulic system, existing two-way pressure reducing valve and three-way pressure reducing valve
Substantially slide valve form is used, in the case that decompression branch road needs pressure maintaining or load to increase, working hole pressure increases, and causes
There are drainings to drain tap or pressure oil port for pressure-reduction outlet, prevent working oil path is from pressure maintaining, it is necessary to use accumulator or double
Pressure holding function is realized to the solenoid valve of cut-off, this will cause system structure complexity, and cost improves.
Summary of the invention
The technical problem to be solved by the invention for the present situation of prior art is to provide simple and reasonable for structure；It manufactures into
A kind of this low, stable No leakage three-way pressure reducing valve.
The technical scheme of the invention to solve the technical problem is:
A kind of No leakage three-way pressure reducing valve includes valve body, A mouthfuls, P mouthfuls and R mouthfuls is provided on valve body, setting in valve body
There is swivel nut, the first valve seat and the second valve seat are provided in swivel nut, first matched with the first valve port is provided in the first valve seat
Steel ball is provided with the second steel ball compatible with the second valve port in the second valve seat, offers on the first valve seat and P mouthfuls, the first valve
The first through flow hole for being connected of mouth is provided with the second through flow hole being connected with R mouthfuls, the second valve port, the second valve on the second valve seat
The lower part of seat is equipped with push rod, and the lower end of the push rod is matched with first steel ball, is offered on push rod and A mouthfuls, the second valve
The third through flow hole that is connected of mouth is radially provided with straight pin of the diameter less than the second through flow hole in swivel nut, which runs through
Second through flow hole, the upper end of the second steel ball are fixed with the mandril matched with straight pin, in the second valve in the top of swivel nut
The top of seat is provided with big spring and compatible big spring seat.
The technical measures of optimization further include:
The lower end of the first above-mentioned valve seat is provided with screw plug, and the first spring base is provided in the screw plug, and the first steel ball is placed in
On first spring base, the first spring is provided between the first spring base and screw plug.
The top of above-mentioned push rod is provided with second spring seat, and the second steel ball is placed on the second spring seat, the second bullet
Second spring is provided between spring abutment and the push rod.
The upper end of above-mentioned valve body is fixed with nut, is provided with gasket between the nut and the valve body.
Sealing ring is provided between above-mentioned swivel nut and second valve seat.
The first above-mentioned through flow hole radially opens up.
The lower part two sides of above-mentioned push rod are in the arcuate structure of indent.
Above-mentioned third through flow hole is obliquely installed.
A kind of No leakage three-way pressure reducing valve of the present invention, simple and reasonable for structure, manufacturing cost is low, stable.It is in A
It is provided with the first valve port between mouth and P mouthfuls, the second valve port is provided between A mouthfuls and R mouthfuls, the first steel ball and the first valve port match
It closes, the second steel ball is matched with the second valve port；When pressure of the A mouthfuls of pressure lower than big spring setting, the second valve seat is in big spring
Active force downward motion, the first steel ball is opened downwards by push rod, make the first valve port open, P mouthful with A mouthfuls be connected；It is pressed when A mouthfuls
When power rises to the pressure greater than big spring setting, in the case where A mouthfuls of oil pressure act on, the second valve seat overcomes the active force of big spring upward
Movement, push rod and the first steel ball are detached from, and the first steel ball, which moves upwards to be bonded with the first valve port under the action of the first spring, makes it
It closes, in this way, the first steel ball and the first valve port linear sealing, the second steel ball and the second valve port linear sealing, ensure that A mouthfuls of pressure without letting out
Leakage；When A mouthfuls of pressure changes due to loading variation, when A mouthfuls of pressure rises have been more than the active force of big spring, second spring
Seat continues up under oil pressure effect, and mandril is since the limitation of straight pin can not continue uplink, to overcome second spring
Active force the second steel ball is opened, open the second valve port, A mouthful of oil liquid flows into R mouthfuls, the second valve port after A mouthfuls of pressure decline
It closes, makes A mouthfuls of leak-free pressures, can run steadily in the long term.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is partial enlarged view at I in Fig. 1；
Fig. 3 is partial enlarged view at II in Fig. 1.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
It is as shown in Figure 1 to Figure 3 structural schematic diagram of the invention,
Appended drawing reference therein are as follows: A mouthfuls, P mouthfuls, R mouthfuls, valve body 1, swivel nut 2, straight pin 21, sealing ring 22, the first valve seat 3,
First valve port 3a, the first through flow hole 3b, the first steel ball 31, the first spring base 32, the first spring 33, the second valve seat 4, the second valve port
4a, the second through flow hole 4b, the second steel ball 41, second spring seat 42, second spring 43, push rod 5, third through flow hole 5a, mandril 6,
Big spring 7, big spring seat 71, screw plug 8, nut 9.
As shown in Figure 1 to Figure 3,
A kind of No leakage three-way pressure reducing valve includes valve body 1, is provided with A mouthfuls, P mouthfuls and R mouthfuls on valve body 1, in valve body 1
It is provided with swivel nut 2, the first valve seat 3 and the second valve seat 4 are provided in swivel nut 2, is provided in the first valve seat 3 and the first valve port 3a phase
First steel ball 31 of cooperation, is provided with the second steel ball 41 compatible with the second valve port 4a in the second valve seat 4, on the first valve seat 3
The first through flow hole 3b being connected with P mouthfuls, the first valve port 3a is offered, is provided with and R mouthfuls, the second valve port 4a on the second valve seat 4
The second through flow hole 4b being connected, the lower part of the second valve seat 4 are equipped with push rod 5, the lower end of the push rod 5 and first steel ball 31
It matches, the third through flow hole 5a being connected with A mouthfuls, the second valve port 4a is offered on push rod 5, be radially provided in swivel nut 2 straight
Straight pin 21 of the diameter less than the second through flow hole 4b, the straight pin 21 run through the second through flow hole 4b, the upper end of the second steel ball 41
It is fixed with the mandril 6 matched with straight pin 21, the top of second valve seat 4 is provided with big spring 7 and phase in the top of swivel nut 2
The big spring seat 71 of adaptation.
In embodiment, the lower end of the first valve seat 3 is provided with screw plug 8, is provided with the first spring base 32 in the screw plug 8, and first
Steel ball 31 is placed on first spring base 32, and the first spring 33 is provided between the first spring base 32 and screw plug 8.
In embodiment, the top of push rod 5 is provided with second spring seat 42, and the second steel ball 41 is placed in the second spring seat 42
On, second spring 43 is provided between second spring seat 42 and the push rod 5.
In embodiment, the upper end of valve body 1 is fixed with nut 9, is provided with gasket 91 between the nut 9 and the valve body 1.
Extend the length that is spirally connected between valve body 1 and swivel nut 2 with nut 9, to keep the installation of swivel nut 2 more stable.
In embodiment, sealing ring 22 is provided between swivel nut 2 and second valve seat 4；The setting of sealing ring 22 ensure that
Leakproofness between swivel nut 2 and the second valve seat 4.
In embodiment, the first through flow hole 3b is radially opened up.
In embodiment, the lower part two sides of push rod 5 are in the arcuate structure of indent.
In embodiment, third through flow hole 5a is obliquely installed.
Working principle:
A mouthfuls, P mouthfuls and R mouthfuls are provided on this three-way pressure reducing valve, be provided between A mouthfuls and P mouthfuls 3a, A mouthfuls of the first valve port with
The second valve port 4a is provided between R mouthfuls, the first steel ball 31 is matched with the first valve port 3a, the second steel ball 41 and the second valve port 4a phase
Cooperation.The effect of big spring 7 is responsible for the pressure after A mouthfuls of decompressions.
Oil liquid enters from P mouthfuls, when A mouthfuls of pressure are lower than the pressure that big spring 7 is set, work of second valve seat 4 in big spring 7
Firmly downward motion opens the first valve port 3a, P mouthfuls of oil liquid so that push rod 5 be driven to move downward and open the first steel ball 31
Enter A mouthfuls through the first valve port 3a, the first valve port 3a on the first valve seat 3；When A mouthfuls of pressure rise to greater than the setting of big spring 7
When pressure, in the case where A mouthfuls of oil pressure act on, the second valve seat 4 overcomes the active force of big spring 7 to move upwards, and makes push rod 5 and the first steel ball
31 are detached from, and the first steel ball 31 moves upwards to be bonded with the first valve port 3a under the action of the first spring 33 makes its closing, in this way,
P mouthfuls of oil liquid will not flow into A mouthfuls, and because the first steel ball 31 and the first valve port 3a linear sealing, the second steel ball 41 and the second valve port again
4a linear sealing, A mouthfuls of leak-free pressures.
In the case where the first valve port 3a is closed by the first steel ball 31, if A mouthfuls of pressure becomes because loading variation
When change, when A mouthfuls of pressure rises have been more than the active force of big spring 7, the second valve seat 4 continued up under oil pressure effect until
Mandril 6 offsets with straight pin 21, and the second valve seat 4 continues up, and on mandril 6 can not continue due to the limitation of straight pin 21
Row opens the second valve port 4a so that the active force of second spring 43 be overcome to open the second steel ball 41, and A mouthfuls of oil liquid will be through
It crosses third through flow hole 5a, the second valve port 4a, the second through flow hole 4b and flows into R mouthfuls, such A mouthfuls of pressure can decline at once, A mouthfuls of pressure
After decline, under the active force of big spring 7, the second valve seat 4, which moves down, makes the second valve port 4a and the second steel ball 41 re-form sealing,
To maintain A mouthfuls of pressure.When A mouthfuls of pressure reductions are less than the active force of big spring 7, under the active force of big spring 7, the second valve
Seat 4 moves downward and drives push rod 5 to move downward and open the first steel ball 31, and the first valve port 3a is opened, and P mouthfuls of oil liquid flows into A
Mouth is to A mouthfuls of progress oil pressure supplements.
Highly preferred embodiment of the present invention has illustrated, and the various change or remodeling made by those of ordinary skill in the art are not
It can depart from the scope of the present invention.
Claims (6)
1. a kind of No leakage three-way pressure reducing valve includes valve body (1), A mouthfuls, P mouthfuls and R mouthfuls is provided on the valve body (1),
It is characterized in that: being provided with swivel nut (2) in the valve body (1), the first valve seat (3) and second are provided in the swivel nut (2)
Valve seat (4), is provided with the first steel ball (31) matched with the first valve port (3a) in first valve seat (3), and described the
The lower end of one valve seat (3) is provided with screw plug (8), is provided with the first spring base (32) in the screw plug (8), first steel ball
(31) it is placed on first spring base (32), is provided with the first spring between first spring base (32) and screw plug (8)
(33), compatible second steel ball (41), first valve with the second valve port (4a) are provided in second valve seat (4)
The first through flow hole (3b) being connected with P mouthfuls, the first valve port (3a) is offered on seat (3), is arranged on second valve seat (4)
There is the second through flow hole (4b) being connected with R mouthfuls, the second valve port (4a), the lower part of second valve seat (4) is equipped with push rod
(5), the lower end of the push rod (5) is matched with first steel ball (31), is offered on the push rod (5) and A mouthfuls, the second valve
The third through flow hole (5a) that mouthful (4a) is connected, the top of the push rod (5) are provided with second spring seat (42), and described the
Two steel balls (41) are placed on the second spring seat (42), are arranged between the second spring seat (42) and the push rod (5)
There are second spring (43)；Straight pin (21) of the diameter less than the second through flow hole (4b) is radially provided in the swivel nut (2), it should
Straight pin (21) runs through second through flow hole (4b), and the upper end of second steel ball (41) is fixed with and straight pin (21) phase
The mandril (6) of cooperation is provided with big spring (7) in the top of the swivel nut (2) and is adapted above the second valve seat (4)
Big spring seat (71)；
Oil liquid enters from P mouthfuls, and when pressure of the A mouthfuls of pressure lower than the big spring (7) setting, second valve seat (4) is in institute
It states and is moved downward under the active force of big spring (7), so that the push rod (5) be driven to move downward and by first steel ball (31)
It opens, opens first valve port (3a), P mouthfuls of oil liquid enter A through first valve port (3a) on first valve seat (3)
Mouthful；When A mouthfuls of pressure rise to the pressure greater than the big spring (7) setting, in the case where A mouthfuls of oil pressure act on, second valve seat
(4) overcome the active force of the big spring (7) to move upwards, be detached from the push rod (5) and first steel ball (31), and institute
Stating the first steel ball (31) and moving upwards to be bonded with first valve port (3a) under the action of the first spring (33) makes its pass
It closes, in this way, P mouthfuls of oil liquid will not flow into A mouthfuls again, and because of first steel ball (31) and the first valve port (3a) linear sealing,
Second steel ball (41) and the second valve port (4a) linear sealing, A mouthfuls of leak-free pressures；
In the case where first valve port (3a) is closed by first steel ball (31), if A mouthfuls of pressure changes because of load
And when changing, when A mouthfuls of pressure rises have been more than the active force of the big spring (7), second valve seat (4) is made in oil pressure
It is continued up under until the mandril (6) and the straight pin (21) offset, second valve seat (4) continues up fortune
It is dynamic, and the mandril (6) be since the limitation of the straight pin (21) can not continue uplink, to overcome the second spring (43)
Active force second steel ball (41) is opened, open second valve port (4a), A mouthfuls of oil liquid will pass through the third
Through flow hole (5a), second valve port (4a), second through flow hole (4b) flow into R mouthfuls, and such A mouthfuls of pressure is understood under horse back
Drop, after A mouthfuls of pressure declines, under the active force of the big spring (7), second valve seat (4), which moves down, makes second valve port
(4a) and second steel ball (41) re-form sealing, to maintain A mouthfuls of pressure；When A mouthfuls of pressure reductions are less than the big bullet
When the active force of spring (7), under the active force of the big spring (7), second valve seat (4) moves downward and drives described push away
Bar (5), which moves downward, opens first steel ball (31), and first valve port (3a) is opened, and P mouthfuls of oil liquid flows into A mouthfuls to A
Mouth carries out oil pressure supplement.
2. a kind of No leakage three-way pressure reducing valve according to claim 1, it is characterized in that: the upper end of the valve body (1) is solid
Surely there are nut (9), gasket (91) are provided between the nut (9) and the valve body (1).
3. a kind of No leakage three-way pressure reducing valve according to claim 2, it is characterized in that: the swivel nut (2) and described the
Sealing ring (22) are provided between two valve seats (4).
4. a kind of No leakage three-way pressure reducing valve according to claim 3, it is characterized in that: described the first through flow hole (3b) diameter
To opening up.
5. a kind of No leakage three-way pressure reducing valve according to claim 4, it is characterized in that: the lower part two of the push rod (5)
Side is in the arcuate structure of indent.
6. a kind of No leakage three-way pressure reducing valve according to claim 5, it is characterized in that: the third through flow hole (5a) inclines
Tiltedly setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711420137.2A CN108167491B (en) | 2017-12-25 | 2017-12-25 | A kind of No leakage three-way pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711420137.2A CN108167491B (en) | 2017-12-25 | 2017-12-25 | A kind of No leakage three-way pressure reducing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108167491A CN108167491A (en) | 2018-06-15 |
| CN108167491B true CN108167491B (en) | 2019-08-13 |
Family
ID=62520177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711420137.2A Active CN108167491B (en) | 2017-12-25 | 2017-12-25 | A kind of No leakage three-way pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108167491B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1228129A (en) * | 1969-03-20 | 1971-04-15 | ||
| EP0376115B1 (en) * | 1988-12-24 | 1992-08-05 | Barmag Ag | Hydraulic safety valve |
| CN101910694A (en) * | 2008-01-21 | 2010-12-08 | 腓特烈斯港齿轮工厂股份公司 | Pressure control valve device |
| CN102734249A (en) * | 2012-07-18 | 2012-10-17 | 严光贤 | Overload valve |
| CN106051185A (en) * | 2016-08-13 | 2016-10-26 | 李军 | Balance valve internally provided with buffering valve |
-
2017
- 2017-12-25 CN CN201711420137.2A patent/CN108167491B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1228129A (en) * | 1969-03-20 | 1971-04-15 | ||
| EP0376115B1 (en) * | 1988-12-24 | 1992-08-05 | Barmag Ag | Hydraulic safety valve |
| CN101910694A (en) * | 2008-01-21 | 2010-12-08 | 腓特烈斯港齿轮工厂股份公司 | Pressure control valve device |
| CN102734249A (en) * | 2012-07-18 | 2012-10-17 | 严光贤 | Overload valve |
| CN106051185A (en) * | 2016-08-13 | 2016-10-26 | 李军 | Balance valve internally provided with buffering valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108167491A (en) | 2018-06-15 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20190722 Address after: 410000 No. 27 Xinghu Road, Bangli Industrial Base, Changsha County, Changsha City, Hunan Province Applicant after: Good name Valve Technology Co., Ltd. Address before: 315000 Room 013, Room 18-1, 035, 555 Juxian Road, Ningbo High-tech Zone, Ningbo City, Zhejiang Province Applicant before: Ningbo Wen fan electrical and Mechanical Technology Development Co., Ltd. |
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