CN110686098A - Electromagnetic valve and mechanical equipment - Google Patents
Electromagnetic valve and mechanical equipment Download PDFInfo
- Publication number
- CN110686098A CN110686098A CN201910994261.2A CN201910994261A CN110686098A CN 110686098 A CN110686098 A CN 110686098A CN 201910994261 A CN201910994261 A CN 201910994261A CN 110686098 A CN110686098 A CN 110686098A
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- Prior art keywords
- oil
- spring
- cavity
- chamber
- valve
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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.)
- Pending
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- 239000012530 fluid Substances 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 6
- 239000002699 waste material Substances 0.000 abstract description 7
- 239000003921 oil Substances 0.000 description 71
- 230000007935 neutral effect Effects 0.000 description 4
- 238000005034 decoration Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
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- 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
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0603—Multiple-way valves
- F16K31/061—Sliding valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
- F16K31/0679—Electromagnet aspects, e.g. electric supply therefor with more than one energising coil
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid Mechanics (AREA)
- Electromagnetism (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention provides an electromagnetic valve and mechanical equipment, wherein the electromagnetic valve comprises a valve body and coils arranged at two ends of the valve body, a movable valve core is arranged in the valve body, a first spring cavity and a second spring cavity which are communicated are respectively arranged at two ends of the valve core, an oil inlet cavity, a plurality of oil return cavities and a plurality of working cavities are arranged at two sides of the oil inlet cavity, the oil inlet cavity comprises a plurality of oil ports, the oil ports are communicated with an oil tank, and when the electromagnetic valve does not work, oil in the valve body can flow back to the oil tank through the plurality of oil ports. According to the electromagnetic valve with the structure, the first spring cavity and the second spring cavity at the two ends of the valve core are communicated, so that when a coil does not obtain an electric signal, the pressure difference between the spring cavities can be effectively avoided, and the electromagnetic valve is kept at a middle position. Simultaneously, through set up the hydraulic fluid port of a plurality of and oil tank intercommunication in the oil feed chamber, when the solenoid valve was out of work, fluid in the valve body flowed back to the oil tank through a plurality of hydraulic fluid port to the waste of the energy has been avoided.
Description
Technical Field
The invention relates to the field of hydraulic machinery, in particular to an electromagnetic valve and mechanical equipment.
Background
The electromagnetic valve is used as an automatic basic flow member for controlling fluid, has high control precision and better flexibility, is widely applied to various industrial equipment at present, such as various large-scale engineering machinery like cranes, road rollers and the like, has different functions in a control system, and is mainly used for adjusting the flow direction of a medium, controlling the flow rate and the flow velocity of the medium and the like.
At present, various solenoid valves for hydraulic oil, such as plate solenoid valve, cartridge formula solenoid valve, flange joint formula solenoid valve etc. the application is comparatively ripe, however uses all kinds of solenoid valves at present, when the electromagnetism valves is out of work, hydraulic oil in the system can stay in the valve body usually, can't all flow back to the oil tank, consequently, can cause the waste of the energy to a certain extent.
In summary, how to provide a solenoid valve and a mechanical device including the solenoid valve, which can allow oil to flow back to an oil tank completely when a valve body does not work, thereby reducing energy waste, becomes a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the electromagnetic valve can enable oil to flow back to the oil tank completely when the valve body does not work, and further reduces energy waste, and mechanical equipment comprising the electromagnetic valve.
The solution of the invention is realized by the following steps: the invention provides an electromagnetic valve which comprises a valve body and coils arranged at two ends of the valve body, wherein a movable valve core is arranged in the valve body, a first spring cavity and a second spring cavity which are communicated are respectively arranged at two ends of the valve core, an oil inlet cavity, a plurality of oil return cavities and a plurality of working cavities are arranged at two sides of the oil inlet cavity, the oil inlet cavity comprises a plurality of oil ports, the oil ports are communicated with an oil tank, and when the electromagnetic valve does not work, oil in the valve body can flow back to the oil tank through the oil ports. According to the electromagnetic valve with the structure, the first spring cavity and the second spring cavity at the two ends of the valve core are communicated, so that when a coil does not obtain an electric signal, the pressure difference between the spring cavities can be effectively avoided, and the electromagnetic valve is kept at a middle position. Meanwhile, the oil ports communicated with the oil tank are arranged in the oil inlet cavity, when the electromagnetic valve does not work, oil in the valve body flows back to the oil tank through the oil ports, so that the energy waste is reduced or avoided, and the purpose of energy conservation is achieved.
On the basis, the working cavity at least comprises a first working cavity and a second working cavity, and a plurality of oil ports are arranged between the first working cavity and the second working cavity.
The other technical scheme of the invention is that on the basis, the number of the oil ports is 5, and the oil ports are uniformly arranged between the first working cavity and the second working cavity at intervals.
On the basis, the oil return cavity comprises a first oil return cavity and a second oil return cavity, a first shoulder for sealing is arranged between the first oil return cavity and the first spring cavity, and a second shoulder for sealing is arranged between the second oil return cavity and the second spring cavity.
In another technical scheme of the present invention, on the basis of the above, a first gasket is further disposed between the first spring cavity and the first shoulder, and a second gasket is further disposed between the second spring cavity and the second shoulder.
On the basis, a first push rod for pushing the valve core to move is arranged in the first spring cavity, and a first spring is sleeved on the first push rod; and a second push rod for pushing the valve core to move is arranged in the second spring cavity, and a second spring is sleeved on the second push rod.
On the basis, the middle part of the valve core is provided with a connecting cavity, one end of the connecting cavity is communicated with the first spring cavity, and the other end of the connecting cavity is communicated with the second spring cavity.
On the basis, the valve body is provided with a connecting cavity, one end of the connecting cavity is communicated with the first spring cavity, and the other end of the connecting cavity is communicated with the second spring cavity.
On the basis, the valve body comprises a plurality of valve blocks, and a plurality of connecting holes are further formed in the valve blocks, wherein the number of the connecting holes is 2-4.
In another aspect, the present invention further provides a mechanical apparatus, including a solenoid valve, where the solenoid valve is the solenoid valve described in any one of the above.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic cross-sectional view of a solenoid valve according to the present invention;
FIG. 2 is a cross-sectional schematic view of another solenoid valve;
FIG. 3 is a cross-sectional schematic view of the solenoid valve of FIG. 1 from another perspective;
FIG. 4 is a schematic diagram of the solenoid valve
The corresponding relation of the reference signs is as follows:
1 first coil 2 first push rod 3 first spring
4 first gasket 5 valve core 6 valve body
7 first spring chamber 8 first oil return chamber 9 first working chamber
10 oil inlet cavity 11 second working cavity 12 second oil return cavity
13 second spring chamber 14 connecting bore 15 connecting chamber
16 tail piece 17 first piece 18 first shoulder
19 second shoulder 20 second coil 21 second push rod
22 second spring 23 second washer
Detailed Description
The present invention will now be described in detail with reference to the drawings, which are given by way of illustration and explanation only and should not be construed to limit the scope of the present invention in any way. Furthermore, features from embodiments in this document and from different embodiments may be combined accordingly by a person skilled in the art from the description in this document.
The embodiment of the invention is as follows, please refer to the solenoid valve shown in fig. 1 to 4, which is used for various mechanical equipment and hydraulic equipment, and specifically comprises a valve body 6 and coils arranged at two ends of the valve body 6, wherein the coils comprise a first coil 1 and a second coil 20, a valve core 5 capable of moving left and right in the valve body 6 is arranged in the valve body 6, two ends of the valve core 5 are respectively provided with a first spring cavity 7 and a second spring cavity 13 which are in a communicated state, the valve body 6 is also simultaneously provided with an oil inlet cavity 10, two sides of the oil inlet cavity 10 are respectively provided with a plurality of oil return cavities and a plurality of working cavities, the oil return cavities comprise a first oil return cavity 8 and a second oil return cavity 12, meanwhile, two sides of the oil inlet cavity 10 are also provided with a plurality of working cavities, the oil inlet cavity comprises a plurality of oil ports, the oil ports are communicated with an oil tank of a hydraulic. According to the electromagnetic valve with the structure, the first spring cavity 7 and the second spring cavity 13 at the two ends of the valve core 5 are communicated, so that when the coil 1 does not obtain an electric signal, pressure difference between the first spring cavity 7 and the second spring cavity 13 can be effectively avoided, and the electromagnetic valve is kept at a neutral position. Simultaneously, through set up the hydraulic fluid port of a plurality of and oil tank intercommunication in the oil feed chamber, when the solenoid valve was out of work, fluid in the valve body flowed back to the oil tank through a plurality of hydraulic fluid port to the waste of the energy has been avoided.
On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 1 and fig. 2, the working chambers at least include a first working chamber 9 and a second working chamber 11, the first working chamber 9 is disposed on the left side of the valve body, the second working chamber 11 is disposed on the right side of the valve body, and the plurality of oil ports are disposed between the first working chamber 9 and the second working chamber 11. For the structure of the plurality of oil ports, the plurality of oil ports may be the same or different, and are not limited herein.
On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 1 and fig. 2, the number of the oil ports is 5, and the 5 oil ports are uniformly arranged between the first working chamber 9 and the second working chamber 11 at intervals.
In another embodiment of the present invention, as shown in fig. 1 and fig. 2, a first shoulder 18 for sealing is disposed between the first oil return chamber 8 and the first spring chamber 7, and a second shoulder 19 for sealing is disposed between the second oil return chamber 12 and the second spring chamber 13. According to the arrangement mode, the spring cavity and the oil return cavity are separated by the first shoulder 18 and the second shoulder 19, so that the influence of the pressure in the oil return cavity on the valve core is effectively reduced or completely blocked, and the reversing performance of the valve core is ensured
On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 1 and fig. 2, a first gasket 4 is further disposed between the first spring cavity 7 and the first shoulder 18, a second gasket 23 is further disposed between the second spring cavity 13 and the second shoulder 19, and one end of the spring in the first spring cavity 7 and one end of the spring in the second spring cavity 13 respectively abut against the first gasket 4 and the second gasket 23.
On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 1 and fig. 2, a first push rod 2 for pushing the valve element 5 to move is disposed in the first spring cavity 7, a first spring 3 is sleeved on the first push rod 2, and a right end of the first spring 3 abuts against the first gasket 4. A second push rod 21 for pushing the valve core 5 to move is arranged in the second spring cavity 13, a second spring 22 is sleeved on the second push rod 21, and the left end of the second spring 22 abuts against a second gasket 23.
On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 1, a connection cavity 15 is further disposed in the middle of the valve core 5, one end of the connection cavity 15, that is, the left end shown in the drawing, is communicated with the first spring cavity 7, the other end of the connection cavity 15, that is, the right end shown in the drawing, is communicated with the second spring cavity 13, that is, the first spring cavity 7 and the second spring cavity 13 are communicated through the connection cavity 15, push rods 3 are disposed in the first spring cavity 7 and the second spring cavity 13, springs 2 are sleeved on the push rods 3, and gaskets 4 are further disposed between the first spring cavity 7 and the valve core 5, and between the second spring cavity 13 and the valve core 5. When the coil 1 is not electrified, because the first spring cavity 7 and the second spring cavity 13 are in a communication state, the pressure difference between the first spring cavity 7 and the second spring cavity 13 can be eliminated, and the valve core 5 is in a neutral state under the action of the spring 2 in the first spring cavity 7 and the second spring cavity 13.
In another embodiment of the present invention, on the basis of the above-mentioned embodiment, as shown in fig. 2, the valve body 6 is further provided with a connecting cavity 15, the right end of the connecting cavity 15 is communicated with the first spring cavity 7, and the other end of the connecting cavity 15 is communicated with the second spring cavity 13, compared with the embodiment shown in fig. 1, in this embodiment, the opening position of the connecting cavity 15 is shifted from the valve core 5 to the valve body 6, and the structural shape of the connecting cavity 15 and other opening modes are not specifically limited herein.
On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 1 and fig. 2, the valve body 6 includes a plurality of valve blocks, a plurality of connecting holes 14 are further formed on the valve blocks and the valve core 5, the number of the connecting holes is between 2 and 4, and the upper and lower valve blocks can be detachably and fixedly connected together through the connecting holes 14. The connection holes 14 are preferably screw holes in which connection members such as bolts are provided, and the number of the connection holes 14 is preferably 3. The opening position of the connection hole 14 and the like are not particularly limited. For the first working chamber 9 and the second working chamber 11, both are opened on the valve block, one end of each is communicated with the valve core 5, and in the working process, the first working chamber 9 and the second working chamber 11 are used for being connected with an actuating mechanism of mechanical equipment and providing a power source for the actuating mechanism. In addition, as shown in fig. 4, the solenoid valve is specifically a three-position four-way electromagnetic directional valve, when the coil 1 is energized, the oil inlet chamber 10 starts to feed oil, and when the oil inlet chamber 10 feeds oil, the valve core 5 can be pushed to move left or right, so that left position work or right position work of the solenoid valve is realized, and when the coil 1 is not energized, the solenoid valve is in a neutral position. Again, as shown in fig. 3, the first piece 17 and the tail piece 16 are also provided on the solenoid valve.
In the solenoid valve with the structure, as described above, by communicating the first spring chamber 7 and the second spring chamber 13 at the two ends of the valve core 5, when the coil 1 does not obtain an electric signal, a pressure difference between the first spring chamber 7 and the second spring chamber 13 can be effectively avoided, and the solenoid valve can be kept at a neutral position. Meanwhile, the oil ports communicated with the oil tank are arranged in the oil inlet cavity, when the electromagnetic valve does not work, oil in the valve body flows back to the oil tank through the oil ports, so that the energy waste is reduced or avoided, and the energy-saving purpose is achieved.
The working principle of the electromagnetic valve with the structure is as follows:
as shown in fig. 4, the port P is composed of 5 chambers, and when the solenoid valve is in a normal position, the port P is connected to an oil source of an oil pump, and oil is directly returned through five chambers of the central port P, so that normal unloading is achieved; when the first coil 1 or the second coil does not obtain the electric signal, the valve core 4 keeps the central position under the acting force of the return springs at the two ends, and the oil circuit between the A, B oil port and other oil ports is cut off due to the small gap between the valve core and the valve body, so that the normal working principle is realized. When the first coil or the second coil obtains an electric signal, magnetic force is generated to push the first push rod or the second push rod and push the valve core 5 to move, the valve core 5 conducts functional closing on the cavity of the port P5, meanwhile, the port P is conducted with the port A or the port B, and the port T is conducted with the port B or the port A, so that the functional principle is realized.
In another aspect, the present invention further provides a mechanical apparatus, including a solenoid valve, where the solenoid valve is the above-mentioned solenoid valve, and the hydraulic machine may be any possible mechanical apparatus.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides an electromagnetic valve, its characterized in that includes valve body (6) and sets up in coil (1) at valve body (6) both ends, be equipped with mobilizable case (2) in valve body (6), the both ends of case (2) are equipped with first spring chamber (7) and second spring chamber (13) of intercommunication respectively, be equipped with on valve body (6) into oil chamber (10) and set up in a plurality of oil return chamber and a plurality of working chamber of advancing oil chamber (10) both sides, advance oil chamber (10) including a plurality of hydraulic fluid port, hydraulic fluid and oil tank intercommunication, when the electromagnetic valve is out of work, fluid accessible a plurality of hydraulic fluid port in valve body (6) flows back to the oil tank.
2. The solenoid valve according to claim 1, characterized in that said working chambers comprise at least a first working chamber (9) and a second working chamber (11), said oil ports being arranged between the first working chamber (9) and the second working chamber (11).
3. The solenoid valve according to claim 2, characterized in that the number of the oil ports is 5, and the oil ports are uniformly arranged between the first working chamber (9) and the second working chamber (11) at intervals.
4. A solenoid valve according to claim 3, characterised in that the oil return chamber comprises a first oil return chamber (8) and a second oil return chamber (12), a first shoulder (18) for sealing is arranged between the first oil return chamber (8) and the first spring chamber (7), and a second shoulder (19) for sealing is arranged between the second oil return chamber (12) and the second spring chamber (13).
5. A solenoid valve according to claim 4, characterised in that a first gasket (4) is also provided between the first spring chamber (7) and the first shoulder (18), and a second gasket (23) is also provided between the second spring chamber (13) and the second shoulder (19).
6. The electromagnetic valve according to claim 5, characterized in that a first push rod (2) for pushing the valve core (5) to move is arranged in the first spring cavity (7), and a first spring (3) is sleeved on the first push rod (2); and a second push rod (21) used for pushing the valve core (5) to move is arranged in the second spring cavity (13), and a second spring (22) is sleeved on the second push rod (21).
7. The electromagnetic valve according to claim 6, characterized in that a connecting cavity (15) is opened in the middle of the valve core (2), one end of the connecting cavity (15) is communicated with the first spring cavity (7), and the other end is communicated with the second spring cavity (13).
8. The electromagnetic valve according to claim 6, characterized in that the valve body (6) is provided with a connecting cavity (15), one end of the connecting cavity (15) is communicated with the first spring cavity (7), and the other end is communicated with the second spring cavity (13).
9. The electromagnetic valve according to claim 4 or 5, characterized in that the valve body (6) comprises a plurality of valve blocks, and a plurality of connecting holes (14) are arranged on the valve blocks, and the number of the connecting holes is 2 to 4.
10. A mechanical device comprising a solenoid valve, characterized in that it is a solenoid valve according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910994261.2A CN110686098A (en) | 2019-10-18 | 2019-10-18 | Electromagnetic valve and mechanical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910994261.2A CN110686098A (en) | 2019-10-18 | 2019-10-18 | Electromagnetic valve and mechanical equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110686098A true CN110686098A (en) | 2020-01-14 |
Family
ID=69113237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910994261.2A Pending CN110686098A (en) | 2019-10-18 | 2019-10-18 | Electromagnetic valve and mechanical equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110686098A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4056126A (en) * | 1975-03-19 | 1977-11-01 | Robert Bosch Gmbh | Spool valve arrangement |
| CN202545391U (en) * | 2012-02-17 | 2012-11-21 | 山东青州昊晟液压件制造有限公司 | Integrated multiplex reversing valve |
| CN205190902U (en) * | 2015-12-07 | 2016-04-27 | 常州市康士达机电有限公司 | Magenetic exchange valve's case |
| CN107061795A (en) * | 2017-02-21 | 2017-08-18 | 江苏恒立液压科技有限公司 | Solenoid directional control valve |
| CN211117765U (en) * | 2019-10-18 | 2020-07-28 | 湖南凯恩利液压机械制造有限公司 | Electromagnetic valve and mechanical equipment |
-
2019
- 2019-10-18 CN CN201910994261.2A patent/CN110686098A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4056126A (en) * | 1975-03-19 | 1977-11-01 | Robert Bosch Gmbh | Spool valve arrangement |
| CN202545391U (en) * | 2012-02-17 | 2012-11-21 | 山东青州昊晟液压件制造有限公司 | Integrated multiplex reversing valve |
| CN205190902U (en) * | 2015-12-07 | 2016-04-27 | 常州市康士达机电有限公司 | Magenetic exchange valve's case |
| CN107061795A (en) * | 2017-02-21 | 2017-08-18 | 江苏恒立液压科技有限公司 | Solenoid directional control valve |
| CN211117765U (en) * | 2019-10-18 | 2020-07-28 | 湖南凯恩利液压机械制造有限公司 | Electromagnetic valve and mechanical equipment |
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