CN219570477U - Electrohydraulic reversing valve with position detection function - Google Patents
Electrohydraulic reversing valve with position detection function Download PDFInfo
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- CN219570477U CN219570477U CN202320289419.8U CN202320289419U CN219570477U CN 219570477 U CN219570477 U CN 219570477U CN 202320289419 U CN202320289419 U CN 202320289419U CN 219570477 U CN219570477 U CN 219570477U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model discloses an electrohydraulic reversing valve with position detection, which comprises a pilot electromagnetic valve, a main valve body, a main valve core and an induction stroke regulator, wherein the pilot electromagnetic valve is assembled at the upper end of the main valve body, two ends of the pilot electromagnetic valve are provided with electromagnets, the upper part of the main valve body is provided with two pilot oil channels, pilot control oil ports are arranged on the two pilot oil channels, the lower part of the pilot electromagnetic valve is provided with a control oil port, the control oil port is connected with the pilot control oil port, the lower part of the main valve body is provided with a valve core hole, the main valve core is arranged in the valve core hole, and the induction stroke regulator is arranged at the two ends of the main valve body and is configured to detect the position of the main valve core. According to the utility model, the induction stroke regulator is arranged to monitor the action condition of the main valve core of the electro-hydraulic reversing valve, so that the working state of the main valve core can be known in time, the position of the main valve core can be known accurately, and signals are provided for judging the fault of the hydraulic circuit and the safety protection of the executive component.
Description
Technical Field
The utility model relates to the technical field of reversing valves, in particular to an electrohydraulic reversing valve with position detection.
Background
At present, the metallurgical equipment, injection molding machine and other machines commonly adopt full hydraulic transmission technology. Because the working environment is bad, the temperature is high, and the hydraulic system has more faults. The valve core position of the electro-hydraulic reversing valve can influence the opening and closing and die closing actions of the safety door, and a main valve core clamping valve of the electro-hydraulic reversing valve has more faults in the use process. In the fault detection process, operators need to accurately know the valve core position of the electro-hydraulic reversing valve so as to determine the cause of the fault. In addition, when an operator performs in-machine operation, the valve core position of the electro-hydraulic reversing valve needs to be accurately known so as to confirm whether a safety door, a grinding tool and the like are locked or not, and operation safety is ensured.
Therefore, how to solve the problem that the main valve core position of the electro-hydraulic reversing valve is difficult to accurately know due to the fact that the electro-hydraulic reversing valve is blocked, so that the safety of a hydraulic system is guaranteed, and the problem which needs to be solved urgently is solved.
Disclosure of Invention
The object of the present utility model is to solve at least to some extent one of the above-mentioned technical problems.
Therefore, the utility model provides an electrohydraulic reversing valve with position detection, which is used for detecting the position of a main valve core of the electrohydraulic reversing valve.
In order to achieve the above object, the present utility model provides an electrohydraulic reversing valve with position detection, comprising:
the pilot electromagnetic valve, the main valve body, the main valve core and the induction stroke regulator;
the pilot electromagnetic valve is assembled at the upper end of the main valve body, and electromagnets are arranged at the two ends of the pilot electromagnetic valve;
the upper part of the main valve body is provided with two pilot oil channels, pilot control oil ports are arranged on the two pilot oil channels, the lower part of the pilot electromagnetic valve is provided with a control oil port, and the control oil port is connected with the pilot control oil port; the lower part of the main valve body is provided with a valve core hole, and the main valve core is arranged in the valve core hole; the induction stroke regulator is arranged at two ends of the main valve body and is used for detecting the position of the main valve core;
wherein the induction stroke adjustor comprises: an outer cover, and
the flange socket is provided with two flange sockets which are respectively and vertically arranged near the middle part of the end plate, the magnetic ring is connected between the flange socket and the circuit board through a magnetic wire, and the double-pipe rubber sleeve is arranged at the lower end of the circuit board;
the induction stroke adjustor further includes: a protective cap covered on the flange socket, and
the copper ring, the coil and the second sealing ring are arranged at the lower end of the double-tube rubber sleeve; the copper ring is connected with the coil, and the second sealing ring is sleeved on the coil.
According to one embodiment of the utility model, the induction stroke adjuster is inductive, and an induction core is arranged inside the induction stroke adjuster.
According to one embodiment of the utility model, the inductive travel regulator is an electronic contactless travel limit switch.
According to one embodiment of the utility model, the electrohydraulic reversing valve further comprises: a lock nut and a third seal ring;
the locking nut is arranged on the induction stroke adjuster and is configured to lock the induction stroke adjuster; and the induction stroke regulator is provided with a sealing groove, and the third sealing ring is embedded in the sealing groove.
According to one embodiment of the utility model, the electrohydraulic reversing valve further comprises: an end cap, a spring, and a spring cavity;
the end cover is arranged at two ends of the main valve body and fixes two ends of the main valve core in the spring cavity arranged on the end cover, an end cover pilot oil duct is arranged on the end cover, a first end of the end cover pilot oil duct is connected with the pilot oil duct of the main valve body, a second end of the end cover pilot oil duct is communicated with the spring cavity, and the spring is arranged in the spring cavity.
According to one embodiment of the utility model, the spring cavity comprises a first spring cavity and a second spring cavity.
According to one embodiment of the utility model, the electromagnet comprises a first electromagnet and a second electromagnet; the first electromagnet and the second electromagnet are respectively arranged at two ends of the pilot electromagnetic valve.
According to one embodiment of the utility model, the end cap is in contact with the third seal ring.
According to one embodiment of the utility model, the lower part of the end cover is further provided with an induction stroke adjuster mounting hole, and the induction stroke adjuster is screwed in the induction stroke adjuster mounting hole.
According to one embodiment of the utility model, the pilot solenoid valve is a small leakage electromagnetic directional valve;
wherein the leakage value of the small leakage electromagnetic valve is 15ml/min.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Compared with the prior art, the embodiment of the utility model has the beneficial effects that:
the utility model provides an electrohydraulic reversing valve with position detection, which can timely know the working state of a main valve core and accurately know the valve core position by arranging an induction travel regulating switch to monitor the action condition of the main valve core of the electrohydraulic reversing valve, and provides signals for judging the failure of a hydraulic circuit and the safety protection of an executive component. Meanwhile, the position of the main valve core of the electro-hydraulic reversing valve can be accurately detected, the induction stroke regulator is an electronic contactless stroke limit switch, and the non-contact type non-wear type induction stroke regulator has the advantages of no abrasion, good reliability, long service life, direct detection, small induction hysteresis, good temperature compensation performance and stable and reliable switching action; the hydraulic oil has no special requirements on the moisture and pollution degree of the hydraulic oil, has the dustproof and waterproof grade of IP65, is not interfered by an external magnetic field, and can work in an outdoor spraying environment;
meanwhile, the induction stroke regulator is of a pressure-resistant and feedback two-body structure, the pressure-resistant part is matched with the main valve body, and can be matched with the use requirements of different electrohydraulic valves according to different signaling points, wherein the pressure-resistant part adopts a high-pressure pipe structure, and the highest pressure is 35MPa. The working mode is inductive, and induced electromotive force is generated in the coil through the induction core.
In order to make the technical means of the present utility model more clearly understood, the present utility model can be implemented according to the content of the specification, and in order to make the above and other objects, features and advantages of the present utility model more comprehensible, preferred embodiments accompanied with the accompanying drawings are described in detail below. Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an electro-hydraulic reversing valve provided in accordance with one embodiment of the present utility model;
FIG. 2 is a schematic diagram of an induction stroke adjustor provided according to one embodiment of the present utility model;
FIG. 3 is a schematic diagram of a signaling position of a main spool according to an embodiment of the present utility model;
reference numerals:
100-electrohydraulic reversing valve;
101-a pilot electromagnetic valve; 102-a main valve body; 103-a main spool; 104-a first electromagnet; 105-a second electromagnet; 106-a pilot oil passage; 107-locking nut; 108-a third sealing ring; 109-end cap; 110-a spring; 111-a first spring chamber; 112-a second spring chamber;
200-induction stroke adjuster;
201-an outer sleeve; 202-end plates; 203-a first sealing ring; 204-flange receptacle; 205-magnetic ring; 206-a circuit board; 207-double tube rubber sleeve; 208-protective cap; 209-copper ring 210-coil; 211-a second sealing ring.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
The utility model provides an electrohydraulic reversing valve with position detection, which is an electrohydraulic reversing valve 100 of a loading induction stroke regulator 200 and is also an electro-hydraulic operated directional slide valve. The main valve core 103 is used for detecting the position of the main valve core 103 of the electro-hydraulic reversing valve 100, so as to judge the execution capacity of controlling the opening, closing and reversing of an oil way of a hydraulic system, and is widely applied to industries such as injection molding machines, ships and the like. When one end of the pilot electromagnet is electrified, the control oil way pushes the main valve core 103 to the working position of the switching oil way, at the moment, the induction stroke regulator 200 can detect whether the position of the main valve core 103 is correct or not and send a signal to a system, when the position is wrong, the induction stroke regulator 200 does not send a signal, and the subsequent control cannot continue other subsequent works, so that the aim of ensuring the safety of the hydraulic system is fulfilled.
The signaling position of the induction stroke regulator 200 can be set according to the application condition, and the signaling position is matched according to the motion stroke of the main valve core 103, so that the system operation is ensured to be reliable and the system should be demanded.
Referring to fig. 1-3, the electro-hydraulic reversing valve with position detection provided by the present utility model includes:
a pilot electromagnetic valve 101, a main valve body 102, a main valve core 103 and a sensing stroke regulator 200;
the pilot electromagnetic valve 101 is assembled at the upper end of the main valve body 102, and electromagnets are arranged at two ends of the pilot electromagnetic valve 101; two pilot oil channels 106 are arranged at the upper part of the main valve body 102, pilot control oil ports are arranged on the two pilot oil channels 106, control oil ports are arranged at the lower part of the pilot electromagnetic valve 101, and the control oil ports are connected with the pilot control oil ports; the lower part of the main valve body 102 is provided with a valve core hole, and the main valve core 103 is arranged in the valve core hole; the induction stroke regulator 200 is installed at two ends of the main valve body 102, and is used for detecting the position of the main valve core 103;
wherein the induction stroke adjustor 200 comprises: a jacket 201, and
the flange socket 204 is provided with two sealing rings 203 which are sleeved on the end plate 202, the two sealing rings 204 are respectively and vertically arranged at two ends close to the middle part of the end plate 202, the magnetic ring 205 is connected between the flange socket 204 and the circuit board 206 through magnetic wires, and the double-tube rubber sleeve 207 is arranged at the lower end of the circuit board 206;
the induction stroke adjustor 200 further includes: a protective cap 208 covering the flange socket 204, and
copper ring 209, coil 210 and second sealing ring 211 arranged at the lower end of double-tube rubber sleeve 207; wherein the copper ring 209 is connected with the coil 210, and the second sealing ring 211 is sleeved on the coil 210.
According to the electro-hydraulic reversing valve with position detection, the induction stroke regulator 200 is arranged to monitor the action condition of the main valve core 103 of the electro-hydraulic reversing valve 100, so that the working state of the main valve core 103 can be known in time, the position of the main valve core 103 can be known accurately, and signals are provided for judging the failure of a hydraulic circuit and the safety protection of an executive component. Meanwhile, the position of the main valve core 103 of the electro-hydraulic reversing valve 100 can be accurately detected, the induction stroke regulator 200 is an electronic contactless stroke limit switch, and the non-contact type non-wear type induction stroke regulator 200 has the advantages of no abrasion, good reliability, long service life, direct detection, small induction hysteresis, good temperature compensation performance and stable and reliable switching action; the hydraulic oil has no special requirements on the moisture and pollution degree of the hydraulic oil, has the dustproof and waterproof grade of IP65, is not interfered by an external magnetic field, and can work in an outdoor spraying environment.
It should be noted that, the induction stroke adjuster 200 is of a pressure-resistant and feedback structure, and the pressure-resistant part is matched with the main valve body 102, so that the pressure-resistant part can be adapted according to different signaling points and different use requirements of the electro-hydraulic reversing valve 100, wherein the pressure-resistant part adopts a high-pressure pipe structure, and the highest pressure is 35MPa. The working mode is inductive, and induced electromotive force is generated in the coil through the induction core.
The induction stroke regulator 200 does not use any dynamic sealing element, the sensor precision is high, the temperature drift is low, the repetition precision is high, the reliability is high, the non-contact type induction stroke regulator 200 is adopted, the service life is long, the leakage-free disassembly and replacement of the induction stroke regulator 200 can be realized, the disassembly and replacement of the induction stroke regulator 200 can be realized without the disassembly and replacement of a pressure-resistant part, meanwhile, the induction stroke regulator 200 is separated from oil, the oil temperature can not be directly transmitted to the induction stroke regulator 200, and the use of the induction stroke regulator 200 can be used for the environment with higher oil temperature.
In one embodiment of the present utility model, the induction stroke adjuster 200 is an induction type, an induction core is disposed inside the induction stroke adjuster 200, and an induced electromotive force is generated in the coil 210, and it is understood that the induction stroke adjuster 200 is an electronic type contactless stroke limit switch. The working principle of the induction stroke adjuster 200 is as follows: the action signal of the main valve core 103 is converted into light and sound signals which are convenient to observe, the induction stroke regulator 200 is connected with 24V direct current, the induction stroke regulator 200 is provided with two signal output lines, one signal output line is externally connected with a green indicator lamp, the other signal output line is externally connected with a red indicator lamp and a signaling device, when the main valve core 103 is in the middle position (not in action), the green indicator lamp is lightened (red-out) by the electric signal output by the induction stroke regulator 200, when the main valve core 103 is reversed to a certain distance, the induction stroke regulator 200 outputs the electric signal to control the red indicator lamp to be lightened (green-out) after sensing the main valve core 103 is reversed, and simultaneously the signaling device gives out an alarm.
In one embodiment of the present utility model, the electro-hydraulic reversing valve 100 further includes: a lock nut 107 and a third seal ring 108;
the lock nut 107 is provided on the induction stroke adjuster 200 and configured to lock the induction stroke adjuster 200; the induction stroke adjuster 200 is provided with a sealing groove, and the third sealing ring 108 is embedded in the sealing groove.
It should be noted that the electro-hydraulic reversing valve 100 further includes: end cap 109, spring 110, and spring cavity;
the end cover 109 is arranged at two ends of the main valve body 102 and fixes two ends of the main valve core 103 in a spring cavity arranged in the end cover 109, an end cover pilot oil duct is arranged on the end cover 108, a first end of the end cover pilot oil duct is connected with the pilot oil duct of the main valve body 102, a second end of the end cover pilot oil duct is communicated with the spring cavity, and a spring 110 is arranged in the spring cavity. Wherein the spring chambers comprise a first spring chamber 111 and a second spring chamber 112.
It will be appreciated that when the solenoid is energized, the pilot solenoid valve 101 moves to the left, the first spring chamber 111 obtains pilot oil pressure, the second spring chamber 112 remains pressureless, the main spool 103 moves to the right, and the induction stroke regulator 200 detects displacement signaling of the main spool 103; when the electromagnet is powered off, the pilot electromagnetic valve 101 returns to the initial position, and the second spring cavity 112 is unloaded to the oil tank;
wherein the electromagnets comprise a first electromagnet 104 and a second electromagnet 105; a first electromagnet 104 and a second electromagnet 105 are respectively installed at both ends of the previous solenoid valve 101.
In a preferred embodiment of the present utility model, the pilot solenoid valve 101 is a small leakage electromagnetic directional valve, wherein the leakage value of the small leakage electromagnetic directional valve is 15ml/min. The working principle is as follows: when the pilot electromagnetic valve 101 is not energized, the first spring chamber 111 and the second spring chamber 112 at both ends of the main spool 103 are communicated with the oil tank through the pilot electromagnetic valve 101, and the main spool 103 is held at the neutral position by the spring 110. When the solenoid valve 101 is powered, control oil acts on the first spring chamber 111 at one end of the main valve spool 103 through the pilot solenoid valve 101, while the second spring chamber 112 at the other end returns oil through the pilot solenoid valve 101, and the control oil can be supplied and returned from the inside or the outside. The pilot pressure presses one end of the main valve core and overcomes the spring force of the other end, so that the main valve core 103 can move and reverse, and the induction stroke adjuster 200 is added on the end cover 109, so that whether the main valve core 103 is reversed in place or not and whether the main valve core is blocked or not can be effectively monitored. When the electrohydraulic reversing valve 100 is in a reversing position, the actuating mechanisms such as a safety gate, a grinding tool and a press controlled by the electrohydraulic reversing valve 100 are in a motion state, when the electrohydraulic reversing valve 100 is in a neutral position, the actuating mechanism is in a locking state, the induction stroke regulator 100 can display whether the electrohydraulic reversing valve 100 is in a working position, and in order to ensure the operation safety of workers, the indicator light turns red when the electrohydraulic reversing valve 100 is in the reversing position, and the annunciator gives an alarm. When the worker electrically controls the electro-hydraulic reversing valve 100 to reverse, whether the electro-hydraulic reversing valve 100 has a valve clamping fault or not can be accurately known by observing whether colors of the red indicator light and the green indicator light are switched, and the position of the main valve core of the electro-hydraulic reversing valve 100 can be known.
The conventional stroke adjuster 200 is of a contact type, a trigger type, a mechanical connection, and has a short product life and a certain limitation in reliability in use. The highest pressure is 21MPa, and the method is only suitable for middle and low pressure industries. The sensing stroke adjuster 200 of the conventional electro-hydraulic directional valve 100 is sensing, and the main valve spool moves to a certain fixed position to be sensed. The electro-hydraulic reversing valve 100 has large application limitation in a system, and the safety and the reliability of the position detection of the main valve core 103 are not fully ensured. The conventional pressure-resistant and feedback integrated structure of the induction stroke regulator 200 is characterized in that a pressure-resistant part adopts ceramic encapsulation, the ceramic encapsulation is not applicable to high pressure, and because the rubber ring is dynamically sealed, the disassembly and assembly of the induction stroke regulator 200 are performed after the oil is discharged, the application operation does not meet the field use requirement, the disassembly and replacement of the induction stroke regulator 200 can be realized without leakage at the position of the induction stroke regulator 200 of the electro-hydraulic reversing valve 100, the induction stroke regulator 200 is separated from the pressure resistance, and the disassembly and replacement of the pressure-resistant part can be omitted.
It should be noted that, the induction travel regulator 200 is an electronic contactless travel limit switch, and has the advantages of no contact, good reliability and long service life; the frequency response is high, and the repeatability is good; the connection mode of the electrical appliances with the installation size can be adjusted according to different strokes of the electro-hydraulic reversing valve 100. Protection level IP67, can work in outdoor spray environments.
In one embodiment of the utility model, the end cap 109 is in contact seal with the third seal ring 108; wherein the lower part of the end cover 109 is further provided with a mounting hole of the induction stroke adjuster 200, and the induction stroke adjuster 200 is screwed in the mounting hole of the induction stroke adjuster 200.
In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are example forms of implementing the claims.
Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model, and that various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model are included in the scope of the claims of the present utility model as filed.
Claims (10)
1. An electrohydraulic reversing valve with position detection, comprising:
the pilot electromagnetic valve, the main valve body, the main valve core and the induction stroke regulator;
the pilot electromagnetic valve is assembled at the upper end of the main valve body, and electromagnets are arranged at the two ends of the pilot electromagnetic valve;
the upper part of the main valve body is provided with two pilot oil channels, the two pilot oil channels are provided with pilot control oil ports, the lower part of the pilot electromagnetic valve is provided with a control oil port, and the control oil port is connected with the pilot control oil port; the lower part of the main valve body is provided with a valve core hole, and the main valve core is arranged in the valve core hole; the induction stroke regulator is arranged at two ends of the main valve body and is used for detecting the position of the main valve core;
wherein the induction stroke adjustor comprises: an outer cover, and
the flange socket is provided with two flange sockets which are respectively and vertically arranged at two ends close to the middle part of the end plate, the magnetic ring is connected between the flange socket and the circuit board through a magnetic wire, and the double-pipe rubber sleeve is arranged at the lower end of the circuit board;
the induction stroke adjustor further includes: a protective cap covered on the flange socket, and
the copper ring, the coil and the second sealing ring are arranged at the lower end of the double-tube rubber sleeve; the copper ring is connected with the coil, and the second sealing ring is sleeved on the coil.
2. The electro-hydraulic reversing valve with position detection according to claim 1, wherein the induction stroke regulator is inductive, and an induction core is arranged inside the induction stroke regulator.
3. The electro-hydraulic reversing valve with position detection of claim 2, wherein the induction travel regulator is an electronic contactless travel limit switch.
4. The electro-hydraulic directional valve with position sensing of claim 1, further comprising: a lock nut and a third seal ring;
the locking nut is arranged on the induction stroke adjuster and is configured to lock the induction stroke adjuster; and the induction stroke regulator is provided with a sealing groove, and the third sealing ring is embedded in the sealing groove.
5. The electro-hydraulic directional valve with position sensing of claim 4, further comprising: an end cap, a spring, and a spring cavity;
the end cover is arranged at two ends of the main valve body and fixes two ends of the main valve core in the spring cavity arranged on the end cover, an end cover pilot oil duct is arranged on the end cover, a first end of the end cover pilot oil duct is connected with the pilot oil duct of the main valve body, a second end of the end cover pilot oil duct is communicated with the spring cavity, and the spring is arranged in the spring cavity.
6. The electro-hydraulic reversing valve with position detection of claim 5, wherein the spring chamber includes a first spring chamber and a second spring chamber.
7. The electro-hydraulic reversing valve with position detection of claim 1, wherein the electromagnet comprises a first electromagnet and a second electromagnet; the first electromagnet and the second electromagnet are respectively arranged at two ends of the pilot electromagnetic valve.
8. The electro-hydraulic reversing valve with position detection of claim 5, wherein the end cap is in contact seal with the third seal ring.
9. The electro-hydraulic reversing valve with position detection of claim 8, wherein the lower portion of the end cap is further provided with an induction stroke adjuster mounting hole in which the induction stroke adjuster is threadedly mounted.
10. The electro-hydraulic directional valve with position detection of claim 1, wherein the pilot solenoid valve is a small leakage electromagnetic directional valve;
wherein the leakage value of the small leakage electromagnetic directional valve is 15ml/min.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2022203257898 | 2022-02-17 | ||
| CN202220325789 | 2022-02-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219570477U true CN219570477U (en) | 2023-08-22 |
Family
ID=87669927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320289419.8U Active CN219570477U (en) | 2022-02-17 | 2023-02-17 | Electrohydraulic reversing valve with position detection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219570477U (en) |
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2023
- 2023-02-17 CN CN202320289419.8U patent/CN219570477U/en active Active
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