CN101429954A - Stacking type hydraulic control check valve - Google Patents
Stacking type hydraulic control check valve Download PDFInfo
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- CN101429954A CN101429954A CN 200710047982 CN200710047982A CN101429954A CN 101429954 A CN101429954 A CN 101429954A CN 200710047982 CN200710047982 CN 200710047982 CN 200710047982 A CN200710047982 A CN 200710047982A CN 101429954 A CN101429954 A CN 101429954A
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- hydraulic control
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Abstract
The invention discloses a stacked hydraulic control unidirectional valve, which comprises a valve body, a spool valve positioned in a main aperture of the valve body, the middle of the valve body is provided with the main aperture, the upper side of the valve body is provided with an oil through opening, and the lower side of the valve body is provided with two oil through holes. Four flow passages are cast in the valve body, so that the oil through opening and the oil through holes are communicated with the main aperture respectively. The left end and the right end of the valve body are provided with a set of unidirectional devices. The communication of an upper cavity and a lower cavity is controlled by the on-off of the unidirectional device. A spool valve is arranged in the middle of the main aperture of the valve body; the left side and the right side of the spool valve are provided with a valve seat with an obturating ring respectively; and an inner cavity of the valve seat is provided with a conical valve; a spring seat is positioned in an end closure hole, one end of a spring is arranged on a step of the tail end of the conical valve, while the other end is arranged on the spring seat; and the spring seat is arranged in the end closure hole by spring force; an end closure and the valve body are connected by threads, and the pressure oil does not leak by obturating rings and retaining rings; and when one cavity of the valve body is supplied with oil, the communication of the other cavity is realized. The valve has the advantages of wide application, high reliability, and easy assembly.
Description
Technical field
The present invention relates to the hydraulic equipment technical field, concrete is a kind of Pilot operated check valve that is used for hydraulic pipe line.
Background technique
Stacking type hydraulic control check valve 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 of old-fashioned stacking type hydraulic control check valve, 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.
Summary of the invention
Technical problem solved by the invention is to provide a kind of one-way valve, this one-way valve reliability height.
Technical problem solved by the invention can realize by the following technical solutions:
A kind of stacking type hydraulic control check valve, 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.
Described stacking type hydraulic control check valve, two ends are provided with cone valve, valve seat and end cap symmetrically.
Described stacking type hydraulic control check valve, 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: stacking type hydraulic control check valve of the present invention has 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
Fig. 1 is the sectional view that cone valve is installed at old-fashioned stacking type hydraulic control check valve valve body two ends;
Fig. 2 is the sectional view that old-fashioned stacking type hydraulic control check valve valve body left end is installed cone valve;
Fig. 3 is the sectional view that old-fashioned stacking type hydraulic control check valve valve body right-hand member is installed cone valve;
Fig. 4 is a sectional view of the present invention;
Fig. 5 is a plan view of the present invention;
Fig. 6 is equipped with the sectional view of one-way valve for B end of the present invention;
Fig. 7 is equipped with the sectional view of one-way valve for A end of the present invention.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
Embodiment 1
Present embodiment is the situation that one-way valve all is equipped with at a kind of valve body two ends of stacking type hydraulic control check valve.Because a kind of stacking type hydraulic control check valve in the present embodiment is a bilateral symmetry, so do not repeat them here.
Referring to Fig. 4, Fig. 5, a kind of stacking type hydraulic control check valve has filler opening and oil outlet A1 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 control port of diagram stacking type hydraulic control check valve 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 control port of diagram stacking type hydraulic control check valve 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 invention and major character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (4)
1. stacking type hydraulic control check valve, 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. a kind of stacking type hydraulic control check valve according to claim 1 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. a kind of stacking type hydraulic control check valve according to claim 1 is characterized in that: described stacking type hydraulic control check valve, two ends are provided with cone valve, valve seat and end cap symmetrically.
4. a kind of stacking type hydraulic control check valve according to claim 1, it is characterized in that: described stacking type hydraulic control check valve, 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 200710047982 CN101429954A (en) | 2007-11-08 | 2007-11-08 | Stacking type hydraulic control check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710047982 CN101429954A (en) | 2007-11-08 | 2007-11-08 | Stacking type hydraulic control check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101429954A true CN101429954A (en) | 2009-05-13 |
Family
ID=40645538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710047982 Pending CN101429954A (en) | 2007-11-08 | 2007-11-08 | Stacking type hydraulic control check valve |
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| Country | Link |
|---|---|
| CN (1) | CN101429954A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109114263A (en) * | 2018-09-12 | 2019-01-01 | 苏州丹顿机电有限公司 | A kind of hydraulic control one-way valve in adjustable cutoff direction |
| CN110878777A (en) * | 2019-11-28 | 2020-03-13 | 宁波文泽机电技术开发有限公司 | Pressure control 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 |
| CN114109956A (en) * | 2022-01-04 | 2022-03-01 | 力源液压（苏州）有限公司 | Two-way variable pump end cover assembly |
-
2007
- 2007-11-08 CN CN 200710047982 patent/CN101429954A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109114263A (en) * | 2018-09-12 | 2019-01-01 | 苏州丹顿机电有限公司 | A kind of hydraulic control one-way valve in adjustable cutoff direction |
| 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 |
| CN110878777A (en) * | 2019-11-28 | 2020-03-13 | 宁波文泽机电技术开发有限公司 | Pressure control valve |
| CN110878777B (en) * | 2019-11-28 | 2021-06-01 | 温州英斯蒙特自动化仪表有限公司 | Pressure control valve |
| CN114109956A (en) * | 2022-01-04 | 2022-03-01 | 力源液压（苏州）有限公司 | Two-way variable pump end cover assembly |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20090513 |