CN110397639A - A kind of tubular type one way sequence valve - Google Patents
A kind of tubular type one way sequence valve Download PDFInfo
- Publication number
- CN110397639A CN110397639A CN201910764845.0A CN201910764845A CN110397639A CN 110397639 A CN110397639 A CN 110397639A CN 201910764845 A CN201910764845 A CN 201910764845A CN 110397639 A CN110397639 A CN 110397639A
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- Prior art keywords
- valve
- spring
- port
- chamber
- unidirectional
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- 230000000694 effects Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 13
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 24
- 238000000034 method Methods 0.000 description 9
- 239000010720 hydraulic oil Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/027—Check valves
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Check Valves (AREA)
Abstract
The present invention relates to a kind of tubular type one way sequence valves, its valve design is at tubular body structure, core assembly is packed into valve chamber from the front port of valve body, including unidirectional valve pocket, valve rod, first spring and spring stop piece, the rear port of the first runner of unidirectional valve pocket forms the first valve port, valve rod wears in the mounting hole and forms the first cone structure that can cooperate with the first sealing valve port in rear end, spring stop piece be connected to the front end of the valve rod and by the first spring compression between the aft bulkhead and unidirectional valve pocket of spring stop piece so that the integral lens of the core assembly shape, the lens structure of the integral type is more compact, and it can be easily packed into the valve chamber from the front port of valve body, this effectively increases the assembly efficiency of one way sequence valve.
Description
Technical field
The present invention relates to hydraulic control device technical field more particularly to a kind of tubular type one way sequence valves.
Background technique
In hydraulic drive, existing one way sequence valve be check valve and sequence valve are integrated in a valve body, wherein
One direction is check valve, another direction is then sequence valve.When oil liquid forward direction passes through, closed check valve, sequence valve work.
When oil liquid back through when, oil liquid is passed freely through through check valve, and sequence valve does not work.Such as application No. is:
The Chinese utility model patent of CN201220585012.1 (Authorization Notice No. are as follows: CN202900825U) discloses a kind of " series connection
The big oil filling capacity one way sequence valve of assembling ", which includes valve body, main valve stem, unidirectional valve pocket and bell tap, list
It is mounted in valve body to valve pocket, one end of valve body is connected with bell tap, and the other end of valve body is equipped with main valve pole socket, main valve stem position
In the center of valve body, the small end of main valve stem is inserted in main valve pole socket, and the big end of main valve stem is located in unidirectional valve pocket, main valve pole socket
Surrounding is uniformly distributed multiple channels by coniform, and little spring, unidirectional valve pocket and main valve are equipped between unidirectional valve pocket and main valve pole socket
The big end of bar cooperates, and is equipped in bell tap and adjusts screw, is equipped with big spring, screw thread between the big end and adjusting screw of main valve stem
Female connector is equipped with supporting rib and through-hole, and one end of supporting rib and unidirectional valve pocket offsets.
But the one way sequence valve in above-mentioned patent also has certain deficiency, in this one way sequence valve assembling process compared with
To be cumbersome, and inconvenient detachable maintaining, in order to which by the component assemblings to valve body such as unidirectional valve pocket, one way sequence valve needs are set
Count into valve body and bell tap two section structure interconnected, so that the processing cost and material cost of product are higher, and
Leakage is easy to appear at the two binding site.
Summary of the invention
The technical problem to be solved by the invention for the present situation of prior art is to provide a kind of convenient for assembly, at low cost
Tubular type one way sequence valve.
The technical scheme of the invention to solve the technical problem is: a kind of tubular type one way sequence valve, including have
The valve body and the core assembly in the valve chamber of the valve chamber of front and back perforation, the front port of the valve chamber form oil inlet, valve chamber
Rear port form oil outlet, at tubular body structure, the core assembly fills the valve design from the front port of the valve body
Enter in the valve chamber, including unidirectional valve pocket, valve rod, the first spring and spring stop piece, the check valve set has axial open up
Mounting hole, the back segment of the mounting hole is the reaming section to form first runner, and the rear port of the first runner forms the first valve port,
The check valve puts on also to have and penetrate through from periphery wall to the flowing hole of first runner, and the valve rod is worn in the mounting hole
And the first cone structure that can cooperate with first sealing valve port is formed in rear end, the spring stop piece is connected to the valve rod
Front end and by first spring compression between the aft bulkhead and unidirectional valve pocket of spring stop piece so that the core assembly shape
Integral lens, under the action of first spring, there is the valve rod forward movement to make the first cone knot always
Structure cooperates the trend on the first valve port；There is the second tapered valve port, the check valve on the inner wall of the back segment of the valve chamber
There is the second cone structure that can cooperate with second sealing valve port, so that the valve chamber be divided on the rear end periphery wall of set
At ante-chamber and back cavity, the ante-chamber is corresponding with the oil inlet to be communicated, and the back cavity is corresponding with the oil outlet to be communicated；The valve
Valve seat is installed on the inner wall of the leading portion of chamber, which has the runner hole of the ante-chamber of connection oil inlet and valve chamber, the valve seat
It is additionally provided with second spring between rear end and the front end face of the spring stop piece, under the action of second spring, the core assembly
Always there is the second cone structure for moving backward and making the unidirectional valve pocket to seal cooperation on the second valve port of the valve chamber
Trend.
As an improvement, the valve seat is threaded in the front inner wall of the valve chamber.Using the inner wall of valve seat and valve chamber
The mode of threaded connection, can make valve seat be in different installation sites, and such core assembly is realizing non-return valve function with not
Same opening pressure, is able to satisfy different duty requirements.
As an improvement, axially offering threaded hole on the front bulkhead of the valve seat.The threaded hole is processing technology hole, the spiral shell
The setting of pit, facilitate valve seat processing when carry out clamping fix, and then ensure that valve seat front end external screw thread with after
The blind hole at end concentricity with higher.
As an improvement, the rear end of the valve seat has axially extending blind hole, the spring stop piece is slid back and forth set on institute
It states in blind hole；The front end of the second spring is connected on the bottom surface of the blind hole, and the rear end of the second spring is connected to institute
It states on the front bulkhead of spring stop piece.
As an improvement, the second spring is tower-shaped spring.The setting of tower-shaped spring facilitates one way sequence valve and is realizing
When non-return valve function, the back-and-forth motion process of core assembly is more steady, and realizes quick centring.
As an improvement, the spring stop piece is threadedly coupled on the valve rod.When spring stop piece on valve rod be located at it is different
When installation site, the opening pressure that the first cone structure of above-mentioned valve rod covers upper first valve port relative to check valve is also different,
That is, the valve port cracking pressure that the one way sequence valve carries out sequentially-operating is different, thus, in actual use, user can basis
Actual condition demand carries out flexible modulation to axially mounted position of the spring stop piece on valve rod, so that one way sequence valve can expire
The sequentially-operating demand of foot difference operating condition.
The first spring is fitted securely on valve rod for convenience, and core assembly is made to form a lens, the list
There is shoulder block portion to the front end of valve pocket, first spring is set on the valve rod and rear end is made to be connected to the shoulder block portion
On.
In order to increase the oil filling capacity of one way sequence valve, the flowing hole has multiple, and multiple flowing hole is along described unidirectional
Valve pocket is arranged circumferentially.
Compared with prior art, advantages of the present invention: the core assembly of tubular type one way sequence valve of the invention assembles for one
The lens structure of part structure, the integral type is more compact, and can easily be packed into the valve chamber from the front port of valve body,
This effectively increases the assembly efficiency of one way sequence valve, secondly, the tubular body structure that the valve body of the one way sequence valve is integral,
Use valve body compared with the two section structure that bell tap connects with one way sequence valve in the prior art, structure processing cost and material
Cost is relatively low for material, and reduces the generation of leakage situation.
Detailed description of the invention
Fig. 1 be the embodiment of the present invention carry out sequence valve action process structural schematic diagram (the first valve port and the second valve port are equal
It is in close state)；
Fig. 2 be the embodiment of the present invention carry out sequence valve action process structural schematic diagram (the first valve port is in the open state,
Second valve port is in closed state)；
Fig. 3 be the embodiment of the present invention carry out check valve action process structural schematic diagram (the first valve port is in close state,
Second valve port is in opening state)；
Fig. 4 is the structural schematic diagram of the core assembly of the embodiment of the present invention；
Fig. 5 is the structural schematic diagram of the unidirectional valve pocket of the embodiment of the present invention.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
Referring to Fig. 1-Fig. 5, a kind of tubular type one way sequence valve includes valve body 10, valve seat 30 and core assembly 20, the valve
The generally tubular body structure of body 10, and there is the valve chamber 100 penetrated through axially back and forth, the front port of the valve chamber 100 constitutes oil inlet
The rear port of mouth 11, the valve chamber 100 constitutes oil outlet 12.
Referring to Fig. 1, core assembly 20 is set in valve chamber 100, the lens structure (being detailed in Fig. 4) being specifically integral, packet
Unidirectional valve pocket 21, valve rod 22, the first spring 23 and spring stop piece 24 are included, the rear end of valve rod 22 has the first cone structure 221,
Unidirectional valve pocket 21 has the mounting hole 210 axially opened up, and valve rod 22 is threaded through in the mounting hole 210 of unidirectional valve pocket 21, specifically,
Above-mentioned mounting hole 210 is pre-small post-large step pore structure, and the aperture 212 of the stepped hole is mutually fitted with the size of the bar portion of valve rod 22
Match, so that valve rod 22 can be steadily moved forward and backward under the guiding role of the aperture 212, the macropore of the stepped hole (expands
Hole section 211) the corresponding first runner for being connected to oil outlet 12 is formed, the rear port of the first runner is formed and above-mentioned first cone knot
Compatible first valve port 25 of structure 221, then specifically, be additionally provided on unidirectional valve pocket 21 from periphery wall and penetrated through to the mistake of first runner
Discharge orifice 213, wherein one way sequence valve, can be by above-mentioned into the hydraulic oil in valve chamber 100 in carry out sequence function action
Flowing hole 213 enters in the first runner of unidirectional valve pocket 21, pushes valve rod 22 to overcome the first spring under the pressure of hydraulic oil
23 elastic force moves backward, and the rear port of unidirectional valve pocket 21 is opened, flows out hydraulic oil through oil outlet 12.
Referring to fig. 4, spring stop piece 24 is threaded in the rear end of valve rod 22, and the front end of unidirectional valve pocket 21 has shoulder block portion
215, the front end of the first spring 23 is connected on the aft bulkhead of spring stop piece 24, and the rear end of the first spring 23 is connected to unidirectional valve pocket
In 21 shoulder block portion 215, under the elastic force effect of the first spring 23, the first cone structure 221 of valve rod 22 can be remained
With the trend of the first valve port 25 sealing cooperation of unidirectional valve pocket 21.
With continued reference to Fig. 4, in the present embodiment, spring stop piece 24 is threaded on valve rod 22, works as spring stop piece
24 when being located at different installation sites on valve rod 22, the first cone structure 221 of above-mentioned valve rod 22 is relative to unidirectional valve pocket 21
On the first valve port 25 opening pressure it is also different, that is, the valve port cracking pressure that the one way sequence valve carries out sequentially-operating is different,
Thus, in actual use, user can be according to actual condition demand, to axially mounted position of the spring stop piece 24 on valve rod 22
Carry out flexible modulation is set, so that one way sequence valve is able to satisfy the sequentially-operating demand of different operating conditions.
In conjunction with Fig. 2, the second valve port 13 is also formed on the inner wall of the valve chamber 100 of valve body 10, second valve port 13 is close to out
12 position of hydraulic fluid port correspondingly has the second cone structure 214, the second cone knot on the periphery wall of the rear end of unidirectional valve pocket 21
Structure 214 can be sealed cooperation with above-mentioned second valve port 13, so that the valve chamber 100 of valve body 10 is divided into ante-chamber 101 and back cavity
102, wherein ante-chamber 101 is communicated with oil inlet 11, and back cavity 102 is communicated with oil outlet 12.The front end of valve chamber 100 is also threadedly coupled
There is valve seat 30, there is the runner hole 31 of the ante-chamber 101 of connection oil inlet 11 and valve chamber 100, the rear end of valve seat 30 on the valve seat 30
Also there is axially extending blind hole 33, wherein the front end of core assembly 20 can extend into above-mentioned blind hole 33, specifically, bullet
Spring baffle 24 can front and back slippingly be set to blind hole 33 in, under the guiding role of blind hole 33, core assembly 20 be moved forward and backward
It is more steady, then specifically, second spring 40 is equipped in the blind hole 33 of valve seat 30, the front end of the second spring 40 is connected to valve seat 30
Blind hole 33 bottom surface on, the rear end of second spring 40 is connected on the front bulkhead of spring stop piece 24, in the second spring 40
Under effect, core assembly 20 can move backward and make the first valve of the second cone structure 214 and valve body 10 of unidirectional valve pocket 21
25 sealing cooperation of mouth.In the present embodiment, second spring 40 is pre-large post-small tower-shaped spring, this facilitate that one way sequence valve exists
When carrying out non-return valve function, the back-and-forth motion process of core assembly 20 is more steady, and realizes quick centring.
Referring to Fig. 3, in the present embodiment, the front bulkhead on valve seat 30 also axially offers a threaded hole 32, wherein should
Threaded hole 32 is processing technology hole, and the setting of the threaded hole 32 facilitates the progress clamping in processing of valve seat 30 and fixes, Jin Erbao
The external screw thread of the front end of valve seat 30 and the concentricity with higher of blind hole 33 of rear end are demonstrate,proved.
Referring to figures 1-4, when being assembled, core assembly 20 can be packed into from the front port of valve body 10, is placed into
In the valve chamber 100 of valve body 10, then valve seat 30 is assembled in valve body 10 and by second spring 40 and core assembly 20 again
It offsets, when valve seat 30 screw into setting position, mounting screw is by valve seat 30 and valve body in the processing technology hole 32 of valve seat 30
Assembly can be completed in 10 fastenings.In the present embodiment, since core assembly 20 is by unidirectional valve pocket 21, valve rod 22, the first spring
23 and spring stop piece 24 assemble the lens structure to be formed, thus when being assembled, core assembly 20 can be first in outside
Into a single integrated structure lens are assembled, then the lens are fit directly into valve body 10 again, such structure setting is effective
The assembly efficiency of one way sequence valve is improved, and when being overhauled or being repaired, directly screw off valve seat 30, by core assembly
20 take out, very convenient quick.
The components such as valve body 10, unidirectional valve pocket 21 and the valve rod 22 of the one way sequence valve in the present embodiment are all made of metal material
Material is made, between such first cone structure 221 and the first valve port 25 and between the second cone structure 214 and the second valve port 13
Just for using metal cone sealing by the way of cooperated, save the sealing element between unidirectional valve pocket and valve body in the prior art with
And between valve body 10 and bell tap binding site sealing element, this, which makes one way sequence valve integrally, reduces multiple leakage points,
Increase sealing reliability；Secondly, also accordingly expanding the use scope of product (because using sealing element using metal cone sealing
Using temperature, pressure, using in terms of there are many limitation)；In addition, the structure sealed using metal cone, uses mill
Damage causes time of the time of failure much than sealing part abrasion, aging long, and which effectively increases service lifes.
The course of work of tubular type one way sequence valve in the present embodiment are as follows:
Sequence valve action process: hydraulic oil enters from oil inlet 11, and enters valve chamber by the runner hole 31 of valve seat 30
In 100 ante-chamber 101, oil liquid can be acted on the first cone structure 221 of valve rod 22, at this point, since oil liquid pressure is less than
The elastic force of one spring 23, valve rod 22 will not move backward, the first valve of the first cone structure 221 and unidirectional valve pocket 21 of valve rod 22
Mouth 25 is in sealing mated condition, at this point, the actuator of the external branch road communicated with oil inlet 11 can be acted preferentially, in detail
See Fig. 1；Pressure after the completion of the actuator movement of the external branch road communicated with oil inlet 11, in the ante-chamber 101 of valve chamber 100
It increases, when oil liquid pressure, which is increased to, can overcome the elastic force of the first spring 23, valve rod 22 is moved backward, first on valve rod 22
Cone structure 221 is detached from the first valve port 25 and opens the first valve port 25, and hydraulic oil passes sequentially through the overcurrent of unidirectional valve pocket 21
Hole 213, first runner and the first valve port 25 and reach the first valve port 25, realize sequentially-operating, be detailed in arrow direction in Fig. 2.
Check valve action process: when needing to carry out unidirectional valve events, hydraulic oil overcomes the second bullet from 12 feed liquor of oil outlet
The pressure of spring 40 pushes the core assembly 20 being made of valve rod 22, unidirectional valve pocket 21, the first spring 23 and spring stop piece 24 whole
Body moves forward, at this point, the second cone joint 214 of unidirectional valve pocket 21 and the second valve port 13 of valve body 10 be detached from and by the second valve
Mouthfuls 13 open, hydraulic oil can the runner hole 31 successively through the second valve port 13, the ante-chamber 101 of valve chamber 100 and valve seat 30 reach into
Hydraulic fluid port 11 realizes non-return valve function, the arrow direction being detailed in Fig. 3.
Claims (8)
1. a kind of tubular type one way sequence valve, including the valve body (10) of valve chamber (100) penetrated through with front and back and it is set to the valve chamber
(100) front port of the core assembly (20) in, the valve chamber (100) forms oil inlet (11), and the rear port of valve chamber (100) is formed
Oil outlet (12), it is characterised in that: the valve body (10) is designed to tubular body structure, and the core assembly (20) is from the valve body
(10) front port is packed into the valve chamber (100), including unidirectional valve pocket (21), valve rod (22), the first spring (23) and bullet
Spring baffle (24), the unidirectional valve pocket (21) have the mounting hole (210) axially opened up, and the back segment of the mounting hole (210) is shape
At the reaming section (211) of first runner, the rear port of the first runner forms the first valve port (25), on the unidirectional valve pocket (21)
Also have and penetrated through from periphery wall to the flowing hole of first runner (213), the valve rod (22) is threaded through in the mounting hole (210)
And the first cone structure (221) that cooperation can be sealed with first valve port (25), the spring stop piece (24) are formed in rear end
It is connected to the front end of the valve rod (22) and first spring (23) is pressed on the aft bulkhead of spring stop piece (24) and unidirectional
Between valve pocket (21), so that the lens that the core assembly (20) shape is integral, in the effect of first spring (23)
Under, the valve rod (22), which has to move forward always, makes the first cone structure (221) to cooperate the trend on the first valve port (25)；
There is tapered the second valve port (13), the rear end of the unidirectional valve pocket (21) on the inner wall of the back segment of the valve chamber (100)
There is the second cone structure (214) that cooperation can be sealed with second valve port (13), thus by the valve chamber on periphery wall
(100) it is divided into ante-chamber (101) and back cavity (102), the ante-chamber (101) is corresponding with the oil inlet (11) to be communicated, after described
Chamber (102) is corresponding with the oil outlet (12) to be communicated；
Valve seat (30) are installed on the inner wall of the leading portion of the valve chamber (100), the valve seat (30) have connection oil inlet (11) with
The runner hole (31) of the ante-chamber (101) of valve chamber (100), the front end faces of the rear end of the valve seat (30) and the spring stop piece (24) it
Between be additionally provided with second spring (40), under the action of second spring (40), the core assembly (20) always have moves backward
And the second cone structure (214) of the unidirectional valve pocket (21) is made to seal cooperation in the second valve port (13) of the valve chamber (100)
On trend.
2. tubular type one way sequence valve according to claim 1, it is characterised in that: the valve seat (30) is threaded in described
In the front inner wall of valve chamber (100).
3. tubular type one way sequence valve according to claim 2, it is characterised in that: axial on the front bulkhead of the valve seat (30)
Offer threaded hole (32).
4. tubular type one way sequence valve described in any one of claim 1 to 3, it is characterised in that: the valve seat (30)
Rear end has axially extending blind hole (33), and the spring stop piece (24) slides back and forth in the blind hole (33)；
The front end of the second spring (40) is connected on the bottom surface of the blind hole (33), and the rear end of the second spring (40) is supported
It connects on the front bulkhead of the spring stop piece (24).
5. tubular type one way sequence valve according to claim 4, it is characterised in that: the second spring (40) is tower-shaped bullet
Spring.
6. tubular type one way sequence valve described in any one of claim 1 to 3, it is characterised in that: the spring stop piece
(24) it is threadedly coupled on the valve rod (22).
7. tubular type one way sequence valve according to claim 6, it is characterised in that: the front end of the unidirectional valve pocket (21) has
Shoulder block portion (215), first spring (23) are set on the valve rod (22) and rear end are made to be connected to the shoulder block portion (215)
On.
8. tubular type one way sequence valve described in any one of claim 1 to 3, it is characterised in that: the flowing hole (213)
There is multiple, multiple flowing hole (213) being arranged circumferentially along unidirectional valve pocket (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910764845.0A CN110397639A (en) | 2019-08-19 | 2019-08-19 | A kind of tubular type one way sequence valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910764845.0A CN110397639A (en) | 2019-08-19 | 2019-08-19 | A kind of tubular type one way sequence valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110397639A true CN110397639A (en) | 2019-11-01 |
Family
ID=68328753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910764845.0A Pending CN110397639A (en) | 2019-08-19 | 2019-08-19 | A kind of tubular type one way sequence valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110397639A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114576229A (en) * | 2022-03-01 | 2022-06-03 | 江苏菲尔特液压机械有限公司 | Tubular one-way sequence valve |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5282492A (en) * | 1993-02-23 | 1994-02-01 | The United States Of America As Represented By The Secretary Of The Navy | Dual valve plate two-way pressure relief valve |
| EP0823576A2 (en) * | 1996-08-05 | 1998-02-11 | Brueninghaus Hydromatik Gmbh | Hydraulic valve with pressure reduction and feeding function |
| CN101014793A (en) * | 2004-04-23 | 2007-08-08 | 易通公司 | Internal tank gas pressure control valve |
| FR2982925A1 (en) * | 2011-11-22 | 2013-05-24 | Peugeot Citroen Automobiles Sa | Non-return valve for use in receiver of e.g. gas control circuit for controlling clutch of automobile, has control ring relocating in front part of housing for controlling access to opening to adjust rate of flow of fluid |
| CN103958951A (en) * | 2011-10-21 | 2014-07-30 | S.T.有限责任公司 | Oil-hydraulic valve |
| US20160298889A1 (en) * | 2013-07-04 | 2016-10-13 | Danfoss A/S | An expansion valve with a two-step variable orifice area |
| JP6367432B1 (en) * | 2017-06-19 | 2018-08-01 | 株式会社南武 | Sequence valve with check valve |
| CN210461229U (en) * | 2019-08-19 | 2020-05-05 | 宁波善研液压有限公司 | Tubular one-way sequence valve |
-
2019
- 2019-08-19 CN CN201910764845.0A patent/CN110397639A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5282492A (en) * | 1993-02-23 | 1994-02-01 | The United States Of America As Represented By The Secretary Of The Navy | Dual valve plate two-way pressure relief valve |
| EP0823576A2 (en) * | 1996-08-05 | 1998-02-11 | Brueninghaus Hydromatik Gmbh | Hydraulic valve with pressure reduction and feeding function |
| CN101014793A (en) * | 2004-04-23 | 2007-08-08 | 易通公司 | Internal tank gas pressure control valve |
| CN103958951A (en) * | 2011-10-21 | 2014-07-30 | S.T.有限责任公司 | Oil-hydraulic valve |
| FR2982925A1 (en) * | 2011-11-22 | 2013-05-24 | Peugeot Citroen Automobiles Sa | Non-return valve for use in receiver of e.g. gas control circuit for controlling clutch of automobile, has control ring relocating in front part of housing for controlling access to opening to adjust rate of flow of fluid |
| US20160298889A1 (en) * | 2013-07-04 | 2016-10-13 | Danfoss A/S | An expansion valve with a two-step variable orifice area |
| JP6367432B1 (en) * | 2017-06-19 | 2018-08-01 | 株式会社南武 | Sequence valve with check valve |
| CN210461229U (en) * | 2019-08-19 | 2020-05-05 | 宁波善研液压有限公司 | Tubular one-way sequence valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114576229A (en) * | 2022-03-01 | 2022-06-03 | 江苏菲尔特液压机械有限公司 | Tubular one-way sequence valve |
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