CN104033439A - Valve-body-free rotary change valve device - Google Patents
Valve-body-free rotary change valve device Download PDFInfo
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- CN104033439A CN104033439A CN201410260024.0A CN201410260024A CN104033439A CN 104033439 A CN104033439 A CN 104033439A CN 201410260024 A CN201410260024 A CN 201410260024A CN 104033439 A CN104033439 A CN 104033439A
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- hydraulic fluid
- fluid port
- rotary valve
- reversing rotary
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Abstract
The invention discloses a valve-body-free rotary change valve device comprising more than one valve-body-free rotary change valve. In each valve-body-free rotary change valve, a valve spool is provided with a first flow passage along the center axis thereof, a groove and a second flow passage communicated with the first flow passage are further formed inside the valve spool, an oil port P1 is formed in a first end cap, oil from an external oil supply system enters the rotary reversing valve via the oil port P1, oil ports A, B, T and P2 are formed in a second end cap, the oil port A and the oil port B are both communicated with external actuators, the oil port T is communicated with an external oil tank, the valve spool is hermetically connected with each of the first and second end caps through a sealing ring, and two ends of the first flow passage are communicated with the oil ports P1 and P2 respectively; along with rotation of the valve spool to different positions, the second flow passage can be communicated with one of the oil ports A, B and T; when the second flow passage is communicated with the oil port A, and the oil port T is communicated with the oil port B through the groove; when the second flow passage is communicated with the oil port B, and the oil port T is communicated with the oil port A through the groove.
Description
Technical field
The present invention relates to a kind of hydraulic pressure reversing rotary valve, be mainly used in realizing multiple reversing rotary valves and assemble easily arbitrarily, to control in the field of engineering technology that multiple actuators move respectively.
Background technique
Rotary valve refers to the valve of controlling runner break-make and commutation by Spool rotating, for controlling actuator's action.Conventionally in engineering, need to control multiple actuators and move respectively, if each rotary reversing valve uses independent oil feeding line, can increase greatly the complexity of hydraulic system.
Summary of the invention
The object of this invention is to provide a kind of reversing rotary valve device without valve body, both can realize thus a reversing rotary valve normally works, also can multiple reversing rotary valves be connected successively and be formed multi-way reversing rotary valve according to different operating modes, move respectively thereby can control multiple actuators by an oil feeding line.
To achieve these goals, the technical solution used in the present invention is: the present invention, without the reversing rotary valve device of valve body, is characterized in that: comprise an above reversing rotary valve without valve body, each reversing rotary valve comprises spool, the first end cap and the second end cap, in each reversing rotary valve, spool has first flow along its medial axis, in spool, also have the second runner, first flow and the second runner are interconnected, on described spool, have groove, first end covers and has P1 hydraulic fluid port, oil from outside oil supply system enters reversing rotary valve through this P1 hydraulic fluid port, on the second end cap, have A hydraulic fluid port, B hydraulic fluid port, T hydraulic fluid port and P2 hydraulic fluid port, described A hydraulic fluid port and B hydraulic fluid port are all communicated with outside actuator, described T hydraulic fluid port is communicated with external fuel tank, described spool and the first end cap are tightly connected by seal ring, described spool and the second end cap are tightly connected by seal ring, one end of described first flow is communicated with described P1 hydraulic fluid port, the other end of first flow is communicated with described P2 hydraulic fluid port,
Along with valve core rotation is to diverse location, the second runner can be communicated with in A hydraulic fluid port, B hydraulic fluid port, T hydraulic fluid port; And when the second runner is communicated with A hydraulic fluid port, described T hydraulic fluid port is communicated with B hydraulic fluid port by groove; When the second runner is communicated with B hydraulic fluid port, described T hydraulic fluid port is communicated with A hydraulic fluid port by groove.
Further, reversing rotary valve of the present invention is one, and P2 hydraulic fluid port is not communicated with the external world.
Further, reversing rotary valve of the present invention is more than two, and each reversing rotary valve is connected successively; Be positioned at front end reversing rotary valve the second end cap be fixedly connected with the first end cap of its adjacent reversing rotary valve that is positioned at rear end, and, be positioned at front end reversing rotary valve P2 hydraulic fluid port be communicated with the P1 hydraulic fluid port of its adjacent reversing rotary valve that is positioned at rear end, the P2 hydraulic fluid port that is positioned at the reversing rotary valve of end is not communicated with the external world.
Further, the present invention is in same reversing rotary valve, and the outer surface of the first end cap is along being circumferentially with the first projection and the second projection, and the outer surface of the second end cap is along being circumferentially with the 3rd projection and the 4th projection, the first projection is fixedly connected with the 3rd projection, and the second projection is fixedly connected with the 4th projection.
Further, the present invention is in same reversing rotary valve, the interior edge face of the first end cap offers the first circular protrusions, the interior edge face of the second end cap offers the second circular protrusions, the first end face of spool offers the first circular groove, the second end face of spool has the second circular groove, and described the first circular protrusions is inserted in the first circular groove and forms Spielpassung between the two, and described the second circular protrusions is inserted in the second circular groove and forms Spielpassung between the two.
Further, the present invention is in same reversing rotary valve, the interior edge face of the first end cap offers the first circular protrusions, the interior edge face of the second end cap offers the second circular protrusions, the first end face of spool offers the first circular groove, the second end face of spool offers the second circular groove, and described the first circular protrusions is inserted in the first circular groove and forms Spielpassung between the two, and described the second circular protrusions is inserted in the second circular groove and forms Spielpassung between the two.
Further, the present invention is provided with rotation assisting agency on the outer wall of described spool.
Further, rotation of the present invention assisting agency is the handle being fixedly installed on the outer wall of spool.
Further, rotation of the present invention assisting agency is the gear ring being fixedly installed on the outer wall of spool.
Compared with prior art, the invention has the beneficial effects as follows: (1) the present invention is without the reversing rotary valve of valve body, do not need valve body, simplify the structure of valve, and both can realize thus a reversing rotary valve normally works, also can easily multiple reversing rotary valves be connected successively and form multi-way reversing rotary valve, can control multiple actuators by an oil feeding line and move respectively, greatly simplify the complexity of hydraulic system.(2) owing to all there is valve body in existing rotary valve, and spool, in valve body, therefore exists transmission shaft, need to drive Spool rotating by transmission shaft.And because there is not valve body in the present invention, so can there is no transmission shaft on the medial axis of spool, therefore runner can be located on medial axis, spool is in the time rotating like this, runner on medial axis does not rotate, can ensure that, in the time that multiple reversing rotary valves are worked respectively, all runners on medial axis are all connected with high pressure oil.(3) in addition, the present invention is owing to there is no valve body structure, can be on the outer wall of spool mounting knob or gear ring carry out rotary spool, reduced the needed active force of rotary spool.
Brief description of the drawings
Fig. 1 is the normal axomometric drawing of a kind of reversing rotary valve device without valve body of the present invention under single valve operating mode;
Fig. 2 is the sectional view of the reversing rotary valve in Fig. 1;
Fig. 3 is the sectional view of the spool in Fig. 2;
Fig. 4 is the three-dimensional structure schematic diagram of spool;
Fig. 5 is the three-dimensional structure schematic diagram of the first end cap in Fig. 2;
Fig. 6 is the sectional view of the second end cap in Fig. 2;
Fig. 7 is that the A-A of the second end cap in Fig. 2 is to sectional view;
Fig. 8 is the sectional view of a kind of reversing rotary valve device without valve body of the present invention under bivalve operating mode;
In figure, 1-spool; 2-the first end cap; 3-the second end cap; 4-first flow; 5-the second runner; 6-groove; 7-P1 hydraulic fluid port; 8-the first projection; 9-the second projection; 10-A hydraulic fluid port; 11-B hydraulic fluid port; 12-T hydraulic fluid port; 13-P2 hydraulic fluid port; 14-the 3rd projection; 15-the 4th projection; 16-screw plug; 17-the first circular protrusions; 18-the second circular protrusions; 19-the first circular groove; 20-the second circular groove; 21-handle.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be further described.
As shown in Figures 1 to 7, the each reversing rotary valve without valve body of the present invention does not have valve body, is mainly made up of spool 1, the first end cap 2 and the second end cap 3, and the first end cap 2 and the second end cap 3 lay respectively at the both sides of spool 1.Spool 1 has first flow 4 along its medial axis, in addition, also has the second runner in spool 1, and first flow 4 and the second runner 5 are interconnected.Spool 1 has groove 6 at it on the side end face near the second end cap 3.On the first end cap 2, have P1 hydraulic fluid port 7, enter each reversing rotary valve from the oil of outside oil supply system through this P1 hydraulic fluid port 7.On the second end cap 3, have A hydraulic fluid port 10, B hydraulic fluid port 11, T hydraulic fluid port 12 and P2 hydraulic fluid port 13, A hydraulic fluid port 10 and B hydraulic fluid port 11 are all communicated with outside actuator, and T hydraulic fluid port 12 is communicated with external fuel tank.
Spool 1 and the first end cap 2 are tightly connected by seal ring, and spool 1 and the second end cap 3 are tightly connected by seal ring, and the first end cap 2 and the second end cap 3 are fixedly installed togather.For the first end cap 2 and the second end cap 3 are fixedly installed togather, as one embodiment of the present invention, can be at the outer surface of the first end cap 2 along being circumferentially with the first projection 8 and the second projection 9, accordingly, outer surface edge at the second end cap 3 is circumferentially with the 3rd projection 14 and the 4th projection 15, thereby the first projection 8 and the 3rd projection 14 are bolted, and the second projection 9 and the 4th projection 15 are bolted.The present invention is without the reversing rotary valve device of valve body, and owing to there is no transmission shaft on the medial axis at spool 1, therefore the rotation of spool 1 is not to rely on transmission shaft to drive.In the present invention, can directly with the outer wall of hand propulsion spool 1, spool 1 be rotated.Turn to a certain position in the presence of spool 1, the second runner 5 is communicated with A hydraulic fluid port 10, thereby P1 hydraulic fluid port 7 is communicated with A hydraulic fluid port 10 by first flow 4 and the second runner 5 successively, and meanwhile, T hydraulic fluid port is communicated with B hydraulic fluid port 11 by groove 6; Along with being further rotated of spool 1, the second runner 5 switches to B hydraulic fluid port 11 and is communicated with, thereby P1 hydraulic fluid port 7 is communicated with B hydraulic fluid port 11 by first flow 4 and the second runner 5 successively, and meanwhile, T hydraulic fluid port is also communicated with A hydraulic fluid port 10 by groove 6; And in the time that spool 1 rotates to other positions, the second oil duct 5 switches to and is communicated with T hydraulic fluid port, thereby P1 hydraulic fluid port 7 is communicated with successively with T hydraulic fluid port by first flow 4 and the second oil duct 5, but now the second oil duct 5 is not communicated with A hydraulic fluid port 10 and B hydraulic fluid port 11.As can be seen here, by controlling the rotation of spool 1, realize the switching of connected relation between the high pressure hydraulic fluid port P1 hydraulic fluid port 7 of reversing rotary valve and the execution hydraulic fluid port A hydraulic fluid port 10 of reversing rotary valve, B hydraulic fluid port 11 and pressure release hydraulic fluid port T hydraulic fluid port 12.In the present invention, rotate for more easily promoting spool 1, a rotation assisting agency can be installed on the outer wall of spool 1.As a kind of embodiment of the present invention, as shown in Figure 1, this rotation assisting agency one is fixedly mounted on the handle 21 on the outer wall of spool 1, the connected relation of the inside oil duct of spool 1 and the inside hydraulic fluid port of the second end cap 3 is switched in the rotation that carrys out thus hand control valve core 1 by promoting handle 21, and then controls actuator's action.As another embodiment of the invention, above-mentioned rotation assisting agency can be also the gear ring (not shown) being fixedly installed on the outer wall circumference of spool 1, thus by spool 1 being rotated gear ring and outer gear engagement driving.
As shown in Figure 2, the present invention can only be made up of a reversing rotary valve without valve body without the reversing rotary valve device of valve body.Now, the P2 hydraulic fluid port 13 of reversing rotary valve is not communicated with the external world.As a kind of embodiment of the present invention, can P2 hydraulic fluid port 13 be blocked so that it is not communicated with the external world with screw plug 16.
The present invention also can be made up of the plural reversing rotary valve without valve body according to actual conditions without the reversing rotary valve device of valve body, and each reversing rotary valve is connected successively.Wherein, the reversing rotary valve of first flowing through from the fluid of outside oil supply system is defined as to the reversing rotary valve of front end, the reversing rotary valve of flowing through after fluid is defined as the reversing rotary valve of rear end, and the reversing rotary valve that fluid is finally flowed through is defined as the reversing rotary valve without valve body of end.As a kind of embodiment of the present invention, each reversing rotary valve adopts the mode being threaded to connect successively, now, be positioned at front end reversing rotary valve the second end cap 3 be fixed together by screw thread with the first end cap 2 of its adjacent reversing rotary valve that is positioned at rear end, and, be positioned at front end reversing rotary valve P2 hydraulic fluid port 13 be communicated with the P1 hydraulic fluid port 7 of its adjacent reversing rotary valve that is positioned at rear end, thus to being positioned at the reversing rotary valve fuel feeding of rear end; The P2 hydraulic fluid port that is positioned at the reversing rotary valve of end is not communicated with the external world.
For convenience of description, below, only taking the reversing rotary valve without valve body, the operating mode during as two is carried out exemplary illustration.
As shown in Figure 8, two reversing rotary valves without valve body are cascaded, and form thus two-way reversing rotary valve.As shown in Figure 8, from first the flow through reversing rotary valve on the left side of the fluid of outside oil supply system, after enter again the reversing rotary valve on the right, therefore, the reversing rotary valve that the reversing rotary valve on the left side is front end, the reversing rotary valve that the reversing rotary valve on the right is rear end.Due in the embodiment shown in fig. 8, only have two reversing rotary valves, therefore the reversing rotary valve on the right is also called the reversing rotary valve of end.In the time that the reversing rotary valve device without valve body is worked, the spool 1 of each reversing rotary valve rotates to specified position, P1 hydraulic fluid port 7 is communicated with A hydraulic fluid port 10 by first flow 4 and the second runner 5, make from the high pressure oil of outside oil supply system correspondingly via the P1 hydraulic fluid port 7 of each reversing rotary valve, first flow 4, the second runner 5, A hydraulic fluid port 10 enters the outside actuator of each correspondence, promote thus each outside actuator motion, meanwhile, the B hydraulic fluid port 11 of same reversing rotary valve is communicated with T hydraulic fluid port 12 by groove 6, make thus the fluid flowing out from each outside actuator flow back into fuel tank.When the spool 1 of each reversing rotary valve continues to turn over after several angle, P1 hydraulic fluid port 7 is communicated with B hydraulic fluid port 11 by first flow 4 and the second runner 5, make thus correspondingly to enter accordingly each outside actuator via P1 hydraulic fluid port 7, first flow 4, the second runner 5, the B hydraulic fluid port 11 of each reversing rotary valve from the high pressure oil of outside oil supply system, promote thus the motion of each actuator, meanwhile, A hydraulic fluid port 10 is communicated with T hydraulic fluid port 12 by groove 6, makes thus the fluid flowing out from each outside actuator flow back into fuel tank.In the time that the spool 1 of each reversing rotary valve rotates to other a certain positions, P1 hydraulic fluid port 7 is communicated with T hydraulic fluid port 12 by first flow 4 and the second runner 5, make thus to enter respectively in fuel tank via P1 hydraulic fluid port 7, first flow 4, the second runner 5, T hydraulic fluid port 12 successively in each reversing rotary valve from the high pressure oil of outside oil supply system, this operating mode is pressure release operating mode.Each reversing rotary valve not in this operating mode, only has to system and occurs glitch or during temporarily not to actuator's fuel feeding, each reversing rotary valve is just in this operating mode in the time of normal commutation.In said process, the P2 hydraulic fluid port 13 of the reversing rotary valve of end is blocked and cannot be led to oil by screw plug 16 all the time.
Therefore, in the time that more than two reversing rotary valve without valve body is followed in series to form the present invention without the reversing rotary valve device of valve body, be positioned at front end the reversing rotary valve without valve body P2 hydraulic fluid port 13 be communicated with the P1 hydraulic fluid port 7 of its adjacent reversing rotary valve without valve body that is positioned at rear end, make to enter via the reversing rotary valve of front end successively from the high pressure oil of outside oil supply system the reversing rotary valve of rear end, the present invention is by using an oil feeding line can make the P1 hydraulic fluid port 7 of each reversing rotary valve all have high pressure oil to pass into thus, and each reversing rotary valve can move respectively.By controlling the rotation of spool 1 of each reversing rotary valve, realize the high pressure hydraulic fluid port P1 hydraulic fluid port 7 of same reversing rotary valve and carry out the switching of connected relation between hydraulic fluid port A hydraulic fluid port 10, B hydraulic fluid port 11 and pressure release hydraulic fluid port T hydraulic fluid port 12, make from the high pressure oil of outside oil supply system through the different reversing rotary valves of reversing rotary valve device of the present invention or directly flow back to fuel tank carry out pressure release or enter each outside actuator and promote the motion of each outside actuator, and make the fluid flowing out from each outside actuator flow back into fuel tank via the corresponding reversing rotary valve of reversing rotary valve device of the present invention.The present invention adopts the mode of rotary spool outer wall to realize the switching of oil circuit, move axially spool and realize the switching of oil circuit than existing employing, there is following advantage: 1) spool rotates than the easy realization of moving linearly, and higher than the control accuracy of the valve port opening of common proportional reversing valve.2) outer wall of rotary spool easily obtains larger reversing force.The present invention realizes the switching of oil circuit than the transmission shaft on existing employing rotary spool medial axis, there is following advantage: 1) the present invention is owing to not needing valve body, so do not adopt transmission shaft, therefore not by the requirement of transmission shaft and the installation of spool coaxality, correspondingly, in Spool rotating process, do not exist transmission shaft spool to be produced to the problem of angular force; 2) the present invention can be composed in series multi-way valve by multiple reversing rotary valves, as long as using an oil feeding line correspondingly to control multiple actuators by multiple reversing rotary valves moves respectively, greatly simplify the complexity of hydraulic system, and existing rotary valve can only a valve job, cannot be connected into multi-way valve.
As preferred version of the present invention, for improving sealing, can on the interior edge face of the first end cap 2, be provided with the first circular protrusions 17, and be provided with accordingly the second circular protrusions 18 on the second end cap 3 interior edge faces; On the first end face of spool 1, have the first circular groove 19, on the second end face of spool 1, have the second circular groove 20; The first circular protrusions 17 is inserted in the first circular groove 19 and forms Spielpassung between the two, and the second circular protrusions 18 is inserted in the second circular groove 20 and forms Spielpassung between the two.
Claims (9)
1. without a reversing rotary valve device for valve body, it is characterized in that: comprise an above reversing rotary valve without valve body, each reversing rotary valve comprises spool, the first end cap and the second end cap, in each reversing rotary valve, spool has first flow along its medial axis, in spool, also have the second runner, first flow and the second runner are interconnected, on described spool, have groove, first end covers and has P1 hydraulic fluid port, oil from outside oil supply system enters reversing rotary valve through this P1 hydraulic fluid port, on the second end cap, have A hydraulic fluid port, B hydraulic fluid port, T hydraulic fluid port and P2 hydraulic fluid port, described A hydraulic fluid port and B hydraulic fluid port are all communicated with outside actuator, described T hydraulic fluid port is communicated with external fuel tank, described spool and the first end cap are tightly connected by seal ring, described spool and the second end cap are tightly connected by seal ring, one end of described first flow is communicated with described P1 hydraulic fluid port, the other end of first flow is communicated with described P2 hydraulic fluid port,
Along with valve core rotation is to diverse location, the second runner can be communicated with in A hydraulic fluid port, B hydraulic fluid port, T hydraulic fluid port; And when the second runner is communicated with A hydraulic fluid port, described T hydraulic fluid port is communicated with B hydraulic fluid port by groove; When the second runner is communicated with B hydraulic fluid port, described T hydraulic fluid port is communicated with A hydraulic fluid port by groove.
2. the reversing rotary valve device without valve body according to claim 1, is characterized in that: described reversing rotary valve is one, and P2 hydraulic fluid port is not communicated with the external world.
3. the reversing rotary valve device without valve body according to claim 1, is characterized in that: described reversing rotary valve is more than two, and each reversing rotary valve is connected successively; Be positioned at front end reversing rotary valve the second end cap be fixedly connected with the first end cap of its adjacent reversing rotary valve that is positioned at rear end, and, be positioned at front end reversing rotary valve P2 hydraulic fluid port be communicated with the P1 hydraulic fluid port of its adjacent reversing rotary valve that is positioned at rear end, the P2 hydraulic fluid port that is positioned at the reversing rotary valve of end is not communicated with the external world.
4. according to the reversing rotary valve device without valve body described in any one in claims 1 to 3, it is characterized in that: in same reversing rotary valve, the outer surface of the first end cap is along being circumferentially with the first projection and the second projection, the outer surface of the second end cap is along being circumferentially with the 3rd projection and the 4th projection, the first projection is fixedly connected with the 3rd projection, and the second projection is fixedly connected with the 4th projection.
5. according to the reversing rotary valve device without valve body described in any one in claims 1 to 3, it is characterized in that: in same reversing rotary valve, the interior edge face of the first end cap offers the first circular protrusions, the interior edge face of the second end cap offers the second circular protrusions, the first end face of spool offers the first circular groove, the second end face of spool has the second circular groove, described the first circular protrusions is inserted in the first circular groove and forms Spielpassung between the two, and described the second circular protrusions is inserted in the second circular groove and forms Spielpassung between the two.
6. the reversing rotary valve device without valve body according to claim 4, it is characterized in that: in same reversing rotary valve, the interior edge face of the first end cap offers the first circular protrusions, the interior edge face of the second end cap offers the second circular protrusions, the first end face of spool offers the first circular groove, the second end face of spool offers the second circular groove, described the first circular protrusions is inserted in the first circular groove and forms Spielpassung between the two, and described the second circular protrusions is inserted in the second circular groove and forms Spielpassung between the two.
7. according to the reversing rotary valve device without valve body described in any one in claims 1 to 3, it is characterized in that: rotation assisting agency is installed on the outer wall of described spool.
8. the described reversing rotary valve device without valve body according to claim 7, is characterized in that: described rotation assisting agency is the handle being fixedly installed on the outer wall of spool.
9. the described reversing rotary valve device without valve body according to claim 7, is characterized in that: described rotation assisting agency is the gear ring being fixedly installed on the outer wall of spool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410260024.0A CN104033439A (en) | 2014-06-12 | 2014-06-12 | Valve-body-free rotary change valve device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410260024.0A CN104033439A (en) | 2014-06-12 | 2014-06-12 | Valve-body-free rotary change valve device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104033439A true CN104033439A (en) | 2014-09-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410260024.0A Pending CN104033439A (en) | 2014-06-12 | 2014-06-12 | Valve-body-free rotary change valve device |
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| Country | Link |
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| CN (1) | CN104033439A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113090502A (en) * | 2021-05-11 | 2021-07-09 | 浙江威邦机电科技有限公司 | Two-way pump of changeable pressure-vaccum state |
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| DE4440232A1 (en) * | 1993-11-23 | 1995-05-24 | Barksdale Inc | Miniature rotary slider valve |
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| EP1041325A2 (en) * | 1999-03-31 | 2000-10-04 | Festo AG & Co | Valve assembly |
| US6161583A (en) * | 1999-06-04 | 2000-12-19 | Morris; Edward J. | Control valve |
| CN201326598Y (en) * | 2008-11-14 | 2009-10-14 | 中国航空工业第一集团公司第一飞机设计研究院 | End-face sealed manual three-position four-way reversing rotary valve |
| CN202937541U (en) * | 2012-12-13 | 2013-05-15 | 伊春技师学院 | Plane manual rotary valve |
| CN103671328A (en) * | 2013-12-21 | 2014-03-26 | 浙江大学 | Automatic reversing rotary valve |
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2014
- 2014-06-12 CN CN201410260024.0A patent/CN104033439A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4440232A1 (en) * | 1993-11-23 | 1995-05-24 | Barksdale Inc | Miniature rotary slider valve |
| DE4425393A1 (en) * | 1994-07-19 | 1996-01-25 | Hen Kon Engineering Gmbh Fuer | Multiway=valve slide control element |
| EP1041325A2 (en) * | 1999-03-31 | 2000-10-04 | Festo AG & Co | Valve assembly |
| US6161583A (en) * | 1999-06-04 | 2000-12-19 | Morris; Edward J. | Control valve |
| CN201326598Y (en) * | 2008-11-14 | 2009-10-14 | 中国航空工业第一集团公司第一飞机设计研究院 | End-face sealed manual three-position four-way reversing rotary valve |
| CN202937541U (en) * | 2012-12-13 | 2013-05-15 | 伊春技师学院 | Plane manual rotary valve |
| CN103671328A (en) * | 2013-12-21 | 2014-03-26 | 浙江大学 | Automatic reversing rotary valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113090502A (en) * | 2021-05-11 | 2021-07-09 | 浙江威邦机电科技有限公司 | Two-way pump of changeable pressure-vaccum state |
| CN113090502B (en) * | 2021-05-11 | 2022-02-11 | 浙江威邦机电科技有限公司 | Two-way pump of changeable pressure-vaccum state |
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Inventor after: Gong Guofang Inventor after: Zhou Hongbin Inventor after: Han Dong Inventor after: Wang He Inventor after: Chen Kui Inventor after: Zhou Jianjun Inventor before: Gong Guofang Inventor before: Zhou Hongbin Inventor before: Han Dong Inventor before: Wang He Inventor before: Liu Yi Inventor before: Yang Huayong |
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Effective date of registration: 20160219 Address after: 310058 Xihu District, Zhejiang, Yuhang Tong Road, No. 866, No. Applicant after: Zhejiang University Applicant after: STATE KEY LABORATORY OF SHIELD MACHINE AND BORING TECHNOLOGY Address before: 310058 Xihu District, Zhejiang, Yuhang Tong Road, No. 866, No. Applicant before: Zhejiang University |
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Application publication date: 20140910 |