CN201288863Y - Superpose installation pilot-controlled check valve - Google Patents
Superpose installation pilot-controlled check valve Download PDFInfo
- Publication number
- CN201288863Y CN201288863Y CN 200820154318 CN200820154318U CN201288863Y CN 201288863 Y CN201288863 Y CN 201288863Y CN 200820154318 CN200820154318 CN 200820154318 CN 200820154318 U CN200820154318 U CN 200820154318U CN 201288863 Y CN201288863 Y CN 201288863Y
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- China
- Prior art keywords
- valve
- valve body
- oil inlet
- spring
- end cap
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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.)
- Expired - Fee Related
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Abstract
The utility model relates to a liquid control one way valve which is arranged in an overlapping way and comprises a valve body, and a valve core that is positioned in a main hole of the valve body. The main hole is arranged in the center of the valve body, an oil inlet and outlet port is arranged on the upper surface of the valve body, and two oil inlet and outlet holes are arranged on the lower surface of the valve body. Four flowing channels are manufactured in the inner of th valve body via a casting method, so that the oil inlet and outlet port is communicated with the oil inlet and outlet holes. The right end and the left end of the valve body are respectively provided with a group of one way devices so as to control if the cavity is run through up and down via opening and closing the one way devices. The valve core is arranged in the center of the main hole of the valve body. The right and left of the valve core are respectively provided with a valve case which is provided with a sealing ring. A tapered valve is arranged in an inner cavity of the valve case. A spring seat is arranged in an end cover hole. One end of a spring is arranged on the step of the tail of the tapered valve, and the other end of the spring is arranged on the spring seat. The spring force positions the spring seat in the end cover hole. A screw thread is used for connecting the end cover and the valve body. The pressure oil is guaranteed to not leak out via the sealing ring and a retainer ring. When the oil is supplied to either of the cavities, the communication of the other cavity can be realized. The utility model has wide application, high reliability and easy assembly.
Description
Technical field
The utility model relates to the hydraulic equipment field, and Pilot operated check valve is installed in particularly a kind of stack.
Background technique
Stack is installed Pilot operated check valve and is made up of one group or two groups of non-return devices usually, usually check valve apparatus is positioned at the valve body two ends, referring to Fig. 1, Fig. 2 and Fig. 3, shown in the figure three kinds of structures that Pilot operated check valve is installed in old-fashioned stack, be respectively the valve body two ends structure of cone valve, valve body left end installation cone valve, valve body right-hand member installation cone valve is installed, the hole that connects upper and lower cavity is the machining inclined hole, and this makes processing become loaded down with trivial details, and the machined holes pressure drop is bigger.This valve has only one grade of cracking pressure, and it is used than narrow limitation.Adopt between end cap and the valve body to be threaded, but screw-thread fit length is shorter, can cause the end cap thread looseness when impact force is excessive.
The model utility content
Technical problem to be solved in the utility model is, provides a kind of stack that Pilot operated check valve is installed, and makes one-way valve reliability height.
In order to address the above problem the technical solution of the utility model is such:
Pilot operated check valve is installed in a kind of stack, comprise that one has the valve body of main aperture, be positioned at the spool of valve body main aperture, has the A1 that communicates with main aperture on the described valve body, B1, A2, four oil inlet and outlets of B2, be connected with cone valve on the described spool, be with valve seat on the cone valve, the outside of cone valve has the end cap of shutoff valve body main aperture, it is characterized in that, described oil inlet and outlet A1, B1 is arranged on the valve body upper surface, oil inlet and outlet A1, B1 be straight hole and by the casting runner communicate with main aperture, described oil inlet and outlet A2, B2 is arranged on the valve body lower surface, described oil inlet and outlet A2, B2 is straight hole and communicates with main aperture by bending casting runner that described end cap is by the valve body that is threaded, and the end cap inboard has spring seat, spring seat is provided with spring, and the spring the other end is against on the cone valve.
The back-up ring and the seal ring that have enhanced leaktightness between described end cap and the valve body.
Pilot operated check valve is installed in described stack, and two ends are provided with cone valve, valve seat and end cap symmetrically.
Pilot operated check valve is installed in described stack, and an end is provided with cone valve, valve seat and end cap, and the other end is provided with the screw plug shutoff, and described screw plug has the back-up ring and the seal ring of enhanced leaktightness by the valve body that is threaded between described screw plug and the valve body.
Beneficial effect: stack of the present utility model is installed Pilot operated check valve and is had many grades of cracking pressures, make the application of valve wider, casting runner hole reduces pressure drop, screw-thread fit length lengthening between end cap or shutoff and the valve body, increased the reliability that connects, for the unidirectional valve of an end band, be simplified with the structure of unidirectional end, be convenient to processing and assembling.
Description of drawings
Describe the utility model in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is that the sectional view that cone valve is installed at fluid-control one-way valve body two ends is installed in old-fashioned stack;
Fig. 2 is that the sectional view that fluid-control one-way valve body left end is installed cone valve is installed in old-fashioned stack;
Fig. 3 is that the sectional view that fluid-control one-way valve body right-hand member is installed cone valve is installed in old-fashioned stack;
Fig. 4 is a sectional view of the present utility model;
Fig. 5 is a plan view of the present utility model;
Fig. 6 is equipped with the sectional view of one-way valve for B end of the present utility model;
Fig. 7 is equipped with the sectional view of one-way valve for A end of the present utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Embodiment 1
Present embodiment is the situation that one-way valve all is equipped with at a kind of valve body two ends that superpose the installation Pilot operated check valve.Because it is bilateral symmetry that Pilot operated check valve is installed in a kind of stack in the present embodiment, so do not repeat them here.
Referring to Fig. 4, Fig. 5, Pilot operated check valve is installed in a kind of stack, and filler opening and oil outlet A1 are arranged on valve body 1, and B1 has oil inlet hole and oil outlet A2, B2 below.Make four runner holes at valve inner by the running casting method, make A1, B1, A2, the B2 hole communicates with main aperture respectively.
Cartridge spool 10 in the main aperture in the valve body 1 is made two above radial grooves on the spool 10, valve body two ends dress end cap 2 by being threaded togather, and makes end cap 2 parts expose valve body 1 between end cap 2 and the valve body 1.
Place, valve body 1 left side has shoulder spacing, and there is groove shoulder and screw thread jointing place, places back-up ring 5 and seal ring 6 in the groove, is pressed between end cap 2 and the valve body, leaks in order to prevent hydraulic oil.
Shoulder was made in position, spool 10 left side when about spool 10 was in meta on the main aperture of valve body 1, the installing and locating that is used for valve seat 7, valve seat 7 is made groove near the place, right side and is placed seal ring 9, valve seat 7 is installed in the main aperture on spool 10 left sides, and seal ring 9 ends should be near the place, left side of spool 10.Make radial hole in valve seat 7 shoulders left sides near the end, be used for the communication that upper and lower cavity leaks oil, make radial hole near the shoulder place, make things convenient for the communication of upper and lower cavity after the one-way valve opens at the right-hand member of valve seat 7.
Axially make two axial step holes at left valve seat 7, the oil sealing surface small bore end is near the right side, and cone valve 8 is packed in valve seat 7 holes, and the aperture place of valve seat 7 is the oil sealing mouth of cone valve 8, and the cylindrical place of cone valve 8 should make and be no less than three grooves simultaneously.The oil sealing mouth of cone valve 8 should be near spool 10.
Axially make a call to a ladder blind hole on end cap 2 right sides, the aperture shoulder is used to place spring seat 3, the macropore shoulder is used to connect the location of rear valve base 7, the left end afterbody of cone valve 8 is made step, spring location as spring 4 one ends, spring 4 the other ends are placed on location on the spring seat 3, utilize the spring 4 in the spring seat 3 that spring seat 3 is positioned in the end cap 2.
Referring again to Fig. 4, the working procedure of present embodiment is as follows:
When hydraulic oil flows into from the A1 mouth, when the B1 mouth flows out.The diagram stack is installed Pilot operated check valve control port and is in closed condition, and along with flow increases, the cracking pressure that oil liquid pressure overcomes left spring 4 moves to left left cone valve 8, makes A1, and the A2 chamber is linked up, and the displacement size of left cone valve 8 is determining the size of logical hydraulic fluid port; The spool 10 of oil liquid pressure promotion simultaneously moves to right, and spool 10 overcomes right spring force makes right-hand member cone valve 8 toward moving right, and makes B1, and the B2 chamber is linked up, and can make fluid flow to B1 from B2 like this.When hydraulic oil flows into from the B1 mouth, when the A1 mouth flows out.The diagram stack is installed Pilot operated check valve control port and is in closed condition, and along with flow increases, the cracking pressure that oil liquid pressure overcomes right spring 4 moves to right right cone valve 8, makes B1, and the B2 chamber is linked up, and the displacement size of right cone valve 8 is determining the size of logical hydraulic fluid port; The spool 10 of oil liquid pressure promotion simultaneously moves to left, and spool 10 overcomes left spring power makes left end cone valve 8 toward moving left, and makes A1, and the A2 chamber is linked up, and can make fluid flow to A1 from A2 like this.
Referring to Fig. 6, when as the B end unidirectional the requirement being arranged, the A end is threaded with valve body by screw plug 12, and makes it expose valve body.Valve body 1 end has shoulder spacing, and there is groove shoulder and screw thread jointing place, places back-up ring 5 and seal ring 6, is pressed between screw plug 2 and the valve body, prevents that hydraulic oil from leaking.The screw plug end face has a small boss, stroke limit when being used for spool 10 and moving.
Referring to Fig. 7, when as the A end unidirectional the requirement being arranged, the B end is threaded with valve body by screw plug 12, and makes it expose valve body.Valve body 1 end has shoulder spacing, and there is groove shoulder and screw thread jointing place, places back-up ring 5 and seal ring 6, is pressed between screw plug 12 and the valve body, prevents that hydraulic oil from leaking.The screw plug end face has a small boss, stroke limit when being used for spool 10 and moving.
More than show and described basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. Pilot operated check valve is installed in a stack, comprise a valve body that has a main aperture, be positioned at the spool of valve body main aperture, have four oil inlet and outlets of A1, B1, A2, B2 that communicate with main aperture on the described valve body, be connected with cone valve on the described spool, be with valve seat on the cone valve, the outside of cone valve has the end cap of shutoff valve body main aperture, it is characterized in that:
Described oil inlet and outlet A1, B1 are arranged on the valve body upper surface, oil inlet and outlet A1, B1 be straight hole and by the casting runner communicate with main aperture, described oil inlet and outlet A2, B2 are arranged on the valve body lower surface, described oil inlet and outlet A2, B2 are straight hole and communicate with main aperture by bending casting runner, described end cap is by the valve body that is threaded, the end cap inboard has spring seat, and spring seat is provided with spring, and the spring the other end is against on the cone valve.
2. Pilot operated check valve is installed in a kind of stack according to claim 1, it is characterized in that: the back-up ring and the seal ring that have enhanced leaktightness between described end cap and the valve body.
3. Pilot operated check valve is installed in a kind of stack according to claim 1, it is characterized in that: Pilot operated check valve is installed in described stack, and two ends are provided with cone valve, valve seat and end cap symmetrically.
4. Pilot operated check valve is installed in a kind of stack according to claim 1, it is characterized in that: Pilot operated check valve is installed in described stack, one end is provided with cone valve, valve seat and end cap, the other end is provided with the screw plug shutoff, described screw plug has the back-up ring and the seal ring of enhanced leaktightness by the valve body that is threaded between described screw plug and the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820154318 CN201288863Y (en) | 2008-10-22 | 2008-10-22 | Superpose installation pilot-controlled check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820154318 CN201288863Y (en) | 2008-10-22 | 2008-10-22 | Superpose installation pilot-controlled check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201288863Y true CN201288863Y (en) | 2009-08-12 |
Family
ID=40980545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200820154318 Expired - Fee Related CN201288863Y (en) | 2008-10-22 | 2008-10-22 | Superpose installation pilot-controlled check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201288863Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797875A (en) * | 2011-05-23 | 2012-11-28 | 广东美芝制冷设备有限公司 | Bidirectional one-way valve and control method thereof |
| CN103016792A (en) * | 2011-09-27 | 2013-04-03 | 芜湖市安芜汽车制动元件有限公司 | Double-loop safe valve |
| CN111609182A (en) * | 2019-02-25 | 2020-09-01 | 江门市新会区进宾科技有限公司 | Stack formula liquid accuse check valve |
-
2008
- 2008-10-22 CN CN 200820154318 patent/CN201288863Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797875A (en) * | 2011-05-23 | 2012-11-28 | 广东美芝制冷设备有限公司 | Bidirectional one-way valve and control method thereof |
| CN103016792A (en) * | 2011-09-27 | 2013-04-03 | 芜湖市安芜汽车制动元件有限公司 | Double-loop safe valve |
| CN111609182A (en) * | 2019-02-25 | 2020-09-01 | 江门市新会区进宾科技有限公司 | Stack formula liquid accuse check valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090812 Termination date: 20161022 |