CN203258105U - Direct-acting proportional reversing valve - Google Patents
Direct-acting proportional reversing valve Download PDFInfo
- Publication number
- CN203258105U CN203258105U CN 201320240485 CN201320240485U CN203258105U CN 203258105 U CN203258105 U CN 203258105U CN 201320240485 CN201320240485 CN 201320240485 CN 201320240485 U CN201320240485 U CN 201320240485U CN 203258105 U CN203258105 U CN 203258105U
- Authority
- CN
- China
- Prior art keywords
- valve body
- proportional
- magnet
- spool
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model relates to a direct-acting proportional reversing valve which comprises a valve body, a valve element, pressure springs and proportional electro-magnets, wherein the valve element is arranged in a main hole of the valve body, the proportional electro-magnets are arranged at one end or two ends of the valve body, and the pressure springs are arranged between the valve element and the proportional electro-magnets. The valve body is provided with an oil inlet, an oil return port and a working oil port, the main hole of the valve body is divided into a spring cavity, an oil return cavity, a working oil cavity and an oil inlet cavity by annular bosses arranged in the main hole, wherein the air inlet is communicated with the oil inlet cavity, the oil return port is communicated with the oil return cavity, the working oil port is communicated with the working oil cavity, and the valve element is matched with the annual bosses and moves in the main hole. Pressure equalizing grooves are arranged in the annular bosses, a shoulder of the valve element is provided with irregular U-shaped throttling grooves, and the valve element is further provided with damping holes for communicating the spring cavity and the oil return cavity and communicating electro-magnet cavities of the proportional electro-magnets and the oil return cavity. Therefore, the quality stability of the direct-acting proportional reversing valve can be improved.
Description
Technical field
The utility model relates to a kind of position control valve, particularly relates to a kind of direct action type proportional selector valve of new structure.
Background technique
Selector valve is the position control valve with two or more liquid forms and two above hydraulic fluid ports.Communication, cut-out and the commutation that realizes hydraulic oil stream, and the valve of discharge degree and sequentially-operating control.At present, common direct driving type electromagnetic proportional reversing valve is that the proportion of utilization electromagnetic attraction is handled the spool transposition, realizes the control to hydraulic oil stream.Seeing also shown in Figure 1ly, is the structural representation of existing a kind of direct driving type electromagnetic proportional reversing valve.Existing a kind of direct driving type electromagnetic proportional reversing valve mainly is comprised of valve body 1, spool 2, pressure spring 3 and proportion electro-magnet 4.Wherein spool 2 is arranged in the main aperture of valve body 1, and proportion electro-magnet 4 is arranged at the two ends of valve body 1, and pressure spring 3 is arranged between the two ends and proportion electro-magnet 4 of spool 2, offers oil inlet P, oil return inlet T and actuator port A, B on valve body 1.
There is following shortcoming in existing direct driving type electromagnetic proportional reversing valve, requires further improvement:
Although 1 has processed balancing slit on the shoulder of the spool 2 of direct driving type electromagnetic proportional reversing valve, but the quantity of balancing slit is fewer, the spool 2 of existing direct driving type electromagnetic proportional reversing valve is still long with the fitting surface of valve body 1, the stuck situation of spool 2 easily occurs.
2, the throttling groove 5 on the spool 2 of existing direct driving type electromagnetic proportional reversing valve is the triangular grooves that adopt the rule of electric discharge machining, its work efficiency is low, and need to change frequently electrode in course of working, easily cause the size of throttling groove inconsistent, overall precision is lower.
3, the proportion electro-magnet 4 that uses of existing direct driving type electromagnetic proportional reversing valve mostly is wet electro-magnet, and the inside of electromagnet will be full of fluid at work, forms the electromagnet chamber.Structure due to spool 2 in commutation process can be cut off the oil back chamber in electromagnet chamber and valve body, make the oil duct of electromagnet chamber and valve body form enclosed space, easily produce like this air in the electromagnet chamber, so existing direct driving type electromagnetic proportional reversing valve need to install exhaust port 6 additional on electromagnet, must first pour into fluid by exhaust port 6 before use and carry out exhaust, then screw plug is screwed in exhaust port 6, otherwise vibration in use can occur.And if there are the phenomenons such as vibration in discovery system in use for some time, can repeat this operation, again clear the air in the electromagnet chamber, complicated operation.
4, as shown in Figure 3, proportion electro-magnet 4 and the valve body 1 of existing direct driving type electromagnetic proportional reversing valve are to be pressed into the end face of valve body 1 by the armature with proportion electro-magnet 4, the hole of adopting four screws to pass on electromagnet coil is connected with valve body 1, and between the magnetic core pipe of proportion electro-magnet 4 and valve body 1, Sealing is set, dismounting is more loaded down with trivial details.In when maintenance, hydraulic system is shut down, dismantle after four attachment screws, could change magnet spool, and its oil back chamber the highest withstand voltage be 16MPa.
5, displacement transducer and displacement transducer controlling device also can be set on existing direct driving type electromagnetic proportional reversing valve, its displacement transducer controlling device is directly to be exposed to the outside, therefore often the misoperation phenomenon can occur.
But 6, Set scale amplifier also on existing direct driving type electromagnetic proportional reversing valve, proportional amplifier is to adopt external, and wiring is complicated, and the unmatched phenomenon of electric liquid often occurs, necessary valve and amplifier coordinative experiments, increased the test difficulty when product export is tested.
In view of this, the design people is based on being engaged in this type of product specification manufacturing abundant practical experience and professional knowledge for many years, and the utilization of cooperation scientific principle, positive research and innovation in addition, through constantly research, design, and through after repeatedly studying sample and improvement, finally create the utility model that has practical value.
Summary of the invention
The purpose of this utility model is, overcome the defective that existing direct driving type electromagnetic proportional reversing valve exists, and provide a kind of direct action type proportional selector valve of new structure, technical problem to be solved is to make it pass through improvement to the direct action type proportional structure of reversing valve, can improve the mass stability of direct action type proportional selector valve, thereby more be suitable for practicality.
The purpose of this utility model and to solve its technical problem be to adopt following technological scheme to realize.According to a kind of direct action type proportional selector valve that the utility model proposes, it comprises: valve body, spool, pressure spring and proportion electro-magnet; Wherein said spool is arranged in the main aperture of described valve body, and described proportion electro-magnet is arranged at the one or both ends of described valve body, and described pressure spring is arranged between described spool and described proportion electro-magnet; Offer filler opening, return opening and actuator port on described valve body; Be provided with annular boss in the main aperture of described valve body, the main aperture of described valve body is divided into spring chamber, oil back chamber, working oil chamber and oil suction chamber by described annular boss; Wherein said filler opening is communicated with described oil suction chamber, and described return opening is communicated with described oil back chamber, and described actuator port is communicated with described working oil chamber, and described spool is to be engaged in the main aperture of described valve body with described annular boss to move; Be equipped with balancing slit on described annular boss; Be provided with throttling groove on the shoulder of described spool, and described throttling groove is irregular U-groove bevel; Also be provided with on described spool and be communicated with described spring chamber and described oil back chamber, and then the damping hole that the electromagnet chamber of described proportion electro-magnet is communicated with described oil back chamber.
The purpose of this utility model and solve its technical problem and can also be further achieved by the following technical measures.
Aforesaid direct action type proportional selector valve, wherein said valve body are the foundry goods of cast inside oil duct.
Aforesaid direct action type proportional selector valve wherein is equipped with balancing slit on the shoulder of described spool.
Aforesaid direct action type proportional selector valve, wherein said proportion electro-magnet is provided with outside thread, the described spring chamber of the main aperture of described valve body is provided with internal thread, and described proportion electro-magnet is to be arranged at the one or both ends of described valve body by described outside thread and described screw-internal thread fit.
Aforesaid direct action type proportional selector valve, wherein said outside thread is to be arranged on the magnetic core pipe of described proportion electro-magnet, also be provided with the confined planes that coordinates with the end face of described valve body on described magnetic core pipe, be equipped with seal groove between described outside thread and described confined planes, be provided with Sealing in described seal groove.
Aforesaid direct action type proportional selector valve wherein is provided with pad between the end face of described spool and described pressure spring.
Aforesaid direct action type proportional selector valve also comprises displacement transducer; Described displacement transducer is installed on the displacement transducer controlling device, is arranged at an end of described proportion electro-magnet, and is provided with protecting jacket in the outside of described displacement transducer and described displacement transducer controlling device.
Aforesaid direct action type proportional selector valve also comprises Proportional Amplifer; Described Proportional Amplifer is arranged on described valve body and is electrically connected to described displacement transducer.
Aforesaid direct action type proportional selector valve, wherein said Proportional Amplifer is mainly by power circuit, input signal processing circuit, slope circuit for generating, sensor position signal detection and processing circuit, PID adjusting control circuit and be electrically connected to composition with the power output circuit of Current Negative Three-Point Capacitance function.
Aforesaid direct action type proportional selector valve, wherein said Proportional Amplifer are built-in proportional amplifier.
The utility model compared with prior art has obvious advantage and beneficial effect.By technique scheme, a kind of direct action type proportional selector valve of the utility model has following advantages and beneficial effect at least:
1, valve body of the present utility model is the foundry goods that adopts the cast inside oil duct, and increased the diameter of valve body main aperture, simultaneously corresponding casting oil duct is also improved, as increase the oil duct volume, increase fillet etc., thereby strengthened the oil filling capacity of valve, and effectively reduced the proportional reversing valve pressure loss between each oil circuit in use; The utility model also is processed with balancing slit on the annular boss of valve body main aperture simultaneously, can effectively reduce the resistance of valve core movement, improves the stability of product.
2, the throttling groove on spool of the present utility model is irregular U-groove bevel, can adopt the processing of numerical control milling machine or vertical machining centre, and the processing that once is installed survives, and work efficiency is high, and the dimensional accuracy of throttling groove is high, more easily guarantees product performance; The utility model also is processed with damping hole on spool simultaneously, can the electromagnet chamber of proportion electro-magnet be communicated with oil back chamber in valve body by damping hole, make the electromagnet chamber not produce air in commutation process, therefore need to not install again exhaust port additional on proportion electro-magnet, by the exhaust port exhaust, simplified operation before product uses and in using process.
3, proportion electro-magnet of the present utility model adopts screw thread directly to be connected with valve body; be convenient to assembling; and magnetic core pipe and the valve body of proportion electro-magnet are airtight; proportion electro-magnet not only is connected firmly with valve body, and both fitting surfaces also have good sealing effect, not easy oil leakage; thereby can be in non-stop-machine situation emat coil more; dismounting is easy to maintenance, and the electromagnet back-pressure sealing is good, withstand voltage degree is high, and the oil back chamber maximum pressure can reach 21MPa.
4, displacement transducer of the present utility model and displacement transducer controlling device are arranged in protecting jacket, generally the misoperation phenomenon can not occur in using process.
5, displacement transducer of the present utility model and displacement transducer controlling device are arranged in protecting jacket; therefore generally do not need the user to regulate voluntarily again in the using process after test mixes up; can effectively avoid occurring the phenomenon of misoperation; in disorder to prevent that the user from adjusting signal, the coupling of whole Proportional valve and amplifier occurs chaotic.
6, Proportional Amplifer of the present utility model is that employing is built-in, easy to use, can solve the matching problem of electric liquid, is conducive to again the use of bus control technology simultaneously.
Above-mentioned explanation is only the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of specification, and for above and other purpose of the present utility model, feature and advantage can be become apparent, below especially exemplified by preferred embodiment, and the cooperation accompanying drawing, be described in detail as follows.
Description of drawings
Fig. 1 is the structural representation of existing a kind of direct driving type electromagnetic proportional reversing valve.
Fig. 2 is the structural representation of a kind of direct action type proportional selector valve of the utility model preferred embodiment.
Fig. 3 is the schematic diagram that the Proportional valve electromagnet of existing a kind of direct driving type electromagnetic proportional reversing valve is connected with valve body.
Fig. 4 is the schematic diagram that the Proportional valve electromagnet of a kind of direct action type proportional selector valve of the utility model preferred embodiment is connected with valve body.
Embodiment
Be to reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the utility model, below in conjunction with accompanying drawing and preferred embodiment, to according to a kind of its embodiment of direct action type proportional selector valve, structure, feature and the effect thereof that the utility model proposes, be described in detail as follows.
Relevant aforementioned and other technology contents of the present utility model, Characteristic can clearly present in the following detailed description that coordinates with reference to graphic preferred embodiment.Explanation by embodiment, should be to reach technological means and the effect that predetermined purpose takes to obtain one more deeply and concrete understanding to the utility model, yet appended graphic only be to provide with reference to the use of explanation, the utility model is limited.
Seeing also shown in Figure 2ly, is the structural representation of a kind of direct action type proportional selector valve of the utility model preferred embodiment.A kind of direct action type proportional selector valve of the utility model preferred embodiment comprises: valve body 1, spool 2, pressure spring 3 and proportion electro-magnet 4.Wherein, spool 2 is arranged in the main aperture 7 of valve body 1, and proportion electro-magnet 4 is arranged at the two ends (or an end) of valve body 1, and pressure spring 3 is arranged between spool 2 and proportion electro-magnet 4.Offer oil inlet P, oil return inlet T and actuator port A, B on valve body 1.Be provided with annular boss 8 in the main aperture 7 of valve body 1, the main aperture 7 of valve body 1 is divided into spring chamber, oil back chamber, working oil chamber and oil suction chamber by annular boss 8.Wherein oil inlet P is communicated with oil suction chamber, and oil return inlet T is communicated with oil back chamber, and actuator port A, B are communicated with two working oil chambers respectively.Spool 2 is to be engaged in the interior movement of main aperture 7 of valve body 1 with annular boss 8.Be equipped with balancing slit on annular boss 8.Be provided with throttling groove 5 on the shoulder of spool 2, throttling groove 5 is irregular U-groove bevel.Also be provided with on spool 2 and be communicated with spring chamber and oil back chamber, and then the damping hole 9 that is communicated with oil back chamber of the electromagnet chamber that makes proportion electro-magnet 4, therefore the utility model need to not install exhaust port additional on proportion electro-magnet 4, and can not produce air in the electromagnet chamber of proportion electro-magnet 4 in commutation process.
The utility model also is equipped with balancing slit on the shoulder of spool 2.Because direct action type proportional selector valve of the present utility model all is being equipped with balancing slit on the shoulder of spool 2 and on the annular boss 8 at the main aperture 7 of valve body 1, therefore can effectively reduce the resistance of spool 2 motions, improve the stability of product.
Seeing also shown in Figure 4ly, is the schematic diagram that the Proportional valve electromagnet of a kind of direct action type proportional selector valve of the utility model preferred embodiment is connected with valve body.Proportion electro-magnet 4 of the present utility model is provided with outside thread 10, and the spring chamber of the main aperture 7 of valve body 1 is provided with internal thread 11, and proportion electro-magnet 4 of the present utility model is to be equipped with two ends (or an end) in valve body 1 by outside thread 10 and internal thread 11.Wherein outside thread 10 is to be arranged on the magnetic core pipe of proportion electro-magnet 4, also is provided with the confined planes 12 that coordinates with the end face of valve body 1 on the magnetic core pipe, also is equipped with seal groove 13 between outside thread 10 and confined planes 12, is provided with Sealing 14 in seal groove 13.
The utility model also is provided with pad 15 between the end face of spool 2 and pressure spring 3, pad 15 plays spacing effect to spool 2 when spool 2 motion, and the stroke of spool 2 is namely to guarantee by pad 15.Proportion electro-magnet 4 of the present utility model can adopt the coil of little impedance, large inductance, large-drive-current, thereby the reliability of valve and rapidity are greatly improved.
The utility model also is provided with displacement transducer.Displacement transducer is to be installed on the displacement transducer controlling device, is arranged at an end of proportion electro-magnet 4, and is provided with protecting jacket 16 in the outside of displacement transducer and displacement transducer controlling device.
The utility model also is provided with Proportional Amplifer 17.Proportional Amplifer 17 is to be arranged on valve body 1 to be electrically connected to displacement transducer.Proportional Amplifer 17 of the present utility model is mainly by power circuit, input signal processing circuit, slope circuit for generating, sensor position signal detection and processing circuit, PID adjusting control circuit and be electrically connected to composition with power output circuit of Current Negative Three-Point Capacitance function etc.Its power supply is to adopt switch power, can the step-down amplifier power consumption, reduce temperature rise, and improve functional reliability; Its sensor detection circuit is to adopt modulation-demodulation to measure amplification circuit, and antijamming capability is strong, and temperature is floated little; Its overall structure is built-in proportional amplifier, and beautiful shape is easy to use, only needs to use seven core plugs just can use; Effectively solve the matching problem of electric liquid, be conducive to again the use of bus control technology simultaneously.
Direct action type proportional selector valve of the present utility model adopts board-like connection, and its Conncetion cimension meets GB GB/T2514-2008 " hydraulic transmission-four hydraulic fluid port position control valve attachment face " requirement.
In a specific embodiment of the present utility model, as shown in Figure 2, when proportion electro-magnet 4 was not switched on, spool 2 remained on meta under the effect of pressure spring 3.When the proportion electro-magnet 4(a when right side in Fig. 2) switching on, its electromagnet push-rod can with spool 2 adhesives, spool 2 is moved to right, its displacement amount is directly proportional to the electric signal size, thereby the throttling groove 5 on spool 2 is opened gradually, oil inlet P on valve body 1 and actuator port B, actuator port A and oil return inlet T are communicated with by the oil circuit of valve body 1 inside respectively.The position of spool 2 is detected by displacement transducer, to correct and any deviation that requires the position, guarantees flow accurately.When the proportion electro-magnet 4(a when right side in Fig. 2) cutting off the power supply, under the effect of pressure spring 3, spool 2 returns to meta.The proportion electro-magnet 4(b in left side in Fig. 2) energising, its electromagnet push-rod can with spool 2 adhesives, spool 2 is moved to left, its displacement amount is directly proportional to the electric signal size, thereby the throttling groove 5 on spool 2 is opened gradually, oil inlet P on valve body 1 and actuator port A, actuator port B and oil return inlet T are communicated with by the oil circuit of valve body 1 inside respectively, realize the control to liquid stream flow.
The above; It is only preferred embodiment of the present utility model; Be not that the utility model is done any pro forma restriction; Although the utility model discloses as above with preferred embodiment; Yet be not to limit the utility model; Any those skilled in the art are not within breaking away from the technical solutions of the utility model scope; When the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations; In every case be the content that does not break away from technical solutions of the utility model; Any simple modification that foundation technical spirit of the present utility model is done above embodiment; Equivalent variations and modification; All still belong in the scope of technical solutions of the utility model.
Claims (10)
1. direct action type proportional selector valve, it comprises: valve body, spool, pressure spring and proportion electro-magnet; Wherein said spool is arranged in the main aperture of described valve body, and described proportion electro-magnet is arranged at the one or both ends of described valve body, and described pressure spring is arranged between described spool and described proportion electro-magnet; Offer filler opening, return opening and actuator port on described valve body; Be provided with annular boss in the main aperture of described valve body, the main aperture of described valve body is divided into spring chamber, oil back chamber, working oil chamber and oil suction chamber by described annular boss; Wherein said filler opening is communicated with described oil suction chamber, and described return opening is communicated with described oil back chamber, and described actuator port is communicated with described working oil chamber, and described spool is to be engaged in the main aperture of described valve body with described annular boss to move; It is characterized in that:
Be equipped with balancing slit on described annular boss; Be provided with throttling groove on the shoulder of described spool, and described throttling groove is irregular U-groove bevel; Also be provided with on described spool and be communicated with described spring chamber and described oil back chamber, and then the damping hole that the electromagnet chamber of described proportion electro-magnet is communicated with described oil back chamber.
2. direct action type proportional selector valve according to claim 1, is characterized in that wherein said valve body is the foundry goods of cast inside oil duct.
3. direct action type proportional selector valve according to claim 1, is characterized in that wherein being equipped with balancing slit on the shoulder of described spool.
4. direct action type proportional selector valve according to claim 1, it is characterized in that wherein said proportion electro-magnet is provided with outside thread, the described spring chamber of the main aperture of described valve body is provided with internal thread, and described proportion electro-magnet is to be arranged at the one or both ends of described valve body by described outside thread and described screw-internal thread fit.
5. direct action type proportional selector valve according to claim 4, it is characterized in that wherein said outside thread is to be arranged on the magnetic core pipe of described proportion electro-magnet, also be provided with the confined planes that coordinates with the end face of described valve body on described magnetic core pipe, be equipped with seal groove between described outside thread and described confined planes, be provided with Sealing in described seal groove.
6. direct action type proportional selector valve according to claim 1 is characterized in that wherein being provided with pad between the end face of described spool and described pressure spring.
7. the described direct action type proportional selector valve of arbitrary claim according to claim 1 to 6, is characterized in that it also comprises displacement transducer; Described displacement transducer is installed on the displacement transducer controlling device, is arranged at an end of described proportion electro-magnet, and is provided with protecting jacket in the outside of described displacement transducer and described displacement transducer controlling device.
8. direct action type proportional selector valve according to claim 7, is characterized in that it also comprises Proportional Amplifer; Described Proportional Amplifer is arranged on described valve body and is electrically connected to described displacement transducer.
9. direct action type proportional selector valve according to claim 8, it is characterized in that wherein said Proportional Amplifer is mainly by power circuit, input signal processing circuit, slope circuit for generating, sensor position signal detection and processing circuit, PID adjusting control circuit and be electrically connected to composition with the power output circuit of Current Negative Three-Point Capacitance function; The power supply of described Proportional Amplifer is to adopt switch power, and the sensor detection circuit of described Proportional Amplifer is to adopt modulation-demodulation to measure amplification circuit.
10. according to claim 8 or 9 described direct action type proportional selector valves, is characterized in that wherein said Proportional Amplifer is built-in proportional amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320240485 CN203258105U (en) | 2013-05-06 | 2013-05-06 | Direct-acting proportional reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320240485 CN203258105U (en) | 2013-05-06 | 2013-05-06 | Direct-acting proportional reversing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203258105U true CN203258105U (en) | 2013-10-30 |
Family
ID=49470668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320240485 Expired - Lifetime CN203258105U (en) | 2013-05-06 | 2013-05-06 | Direct-acting proportional reversing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203258105U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103574266A (en) * | 2013-11-11 | 2014-02-12 | 山东理工大学 | Double-electromagnet two-position-two-way high-pressure dry oil switching valve |
| CN104763700A (en) * | 2015-04-20 | 2015-07-08 | 南通恩迈精密机械科技有限公司 | Twenty-ton excavator hydraulic valve precision casting |
| CN105114663A (en) * | 2015-08-20 | 2015-12-02 | 常德中联重科液压有限公司 | Dynamic reversing method for reversing valve, reversing valve and reversing valve structure |
| CN105422908A (en) * | 2015-12-10 | 2016-03-23 | 济南华信自动化工程有限公司 | Proportional valve for proportional cabinet |
| CN106932666A (en) * | 2015-12-31 | 2017-07-07 | 沪东重机有限公司 | Multiple-way valve control function method of testing |
| CN107342739A (en) * | 2017-08-07 | 2017-11-10 | 上海立新液压有限公司 | A kind of dual-purpose amplifier of plug-type |
| CN108253158A (en) * | 2016-12-28 | 2018-07-06 | 比亚迪股份有限公司 | Flow control valve and with its fork truck |
| CN108518370A (en) * | 2018-05-02 | 2018-09-11 | 宁波真格液压科技有限公司 | A kind of electromagnetic proportional valve of flow saturation resistance |
| CN113154125A (en) * | 2020-05-25 | 2021-07-23 | 涌镇液压机械（上海）有限公司 | Valve core structure of proportional reversing valve |
| CN113932040A (en) * | 2021-10-16 | 2022-01-14 | 涌镇液压机械（上海）有限公司 | Proportional valve for controlling opening and closing of injection molding machine |
| CN113932040B (en) * | 2021-10-16 | 2024-04-12 | 涌镇液压机械（上海）有限公司 | Proportional valve for controlling opening and closing of injection molding machine |
-
2013
- 2013-05-06 CN CN 201320240485 patent/CN203258105U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103574266A (en) * | 2013-11-11 | 2014-02-12 | 山东理工大学 | Double-electromagnet two-position-two-way high-pressure dry oil switching valve |
| CN104763700A (en) * | 2015-04-20 | 2015-07-08 | 南通恩迈精密机械科技有限公司 | Twenty-ton excavator hydraulic valve precision casting |
| CN105114663A (en) * | 2015-08-20 | 2015-12-02 | 常德中联重科液压有限公司 | Dynamic reversing method for reversing valve, reversing valve and reversing valve structure |
| CN105422908A (en) * | 2015-12-10 | 2016-03-23 | 济南华信自动化工程有限公司 | Proportional valve for proportional cabinet |
| CN106932666A (en) * | 2015-12-31 | 2017-07-07 | 沪东重机有限公司 | Multiple-way valve control function method of testing |
| CN108253158A (en) * | 2016-12-28 | 2018-07-06 | 比亚迪股份有限公司 | Flow control valve and with its fork truck |
| CN107342739A (en) * | 2017-08-07 | 2017-11-10 | 上海立新液压有限公司 | A kind of dual-purpose amplifier of plug-type |
| CN108518370A (en) * | 2018-05-02 | 2018-09-11 | 宁波真格液压科技有限公司 | A kind of electromagnetic proportional valve of flow saturation resistance |
| CN113154125A (en) * | 2020-05-25 | 2021-07-23 | 涌镇液压机械（上海）有限公司 | Valve core structure of proportional reversing valve |
| CN113932040A (en) * | 2021-10-16 | 2022-01-14 | 涌镇液压机械（上海）有限公司 | Proportional valve for controlling opening and closing of injection molding machine |
| CN113932040B (en) * | 2021-10-16 | 2024-04-12 | 涌镇液压机械（上海）有限公司 | Proportional valve for controlling opening and closing of injection molding machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203258105U (en) | Direct-acting proportional reversing valve | |
| CN203258106U (en) | Direct-acting proportional reversing valve | |
| CN201580012U (en) | Hydraulic control system for hydraulic press | |
| CN102121487B (en) | Pilot-operated type water hydraulic pressure digital proportional direction valve | |
| CN204436910U (en) | A kind of asymmetric hydraulic efficiency servo-valve | |
| CN104455651A (en) | Pneumatic high-speed switching valve and working method thereof | |
| CN203560560U (en) | Gas switch solenoid valve with flow having linear proportion characteristic | |
| CN203906970U (en) | Electromagnetic hydraulic regulating valve | |
| CN203655754U (en) | Digital modulation type hydraulic fast switching valve | |
| CN203257783U (en) | Electrohydraulic reversal valve | |
| CN203348203U (en) | Speed-regulating hydraulic control valve group of large-flow two-way cartridge valve | |
| CN202302087U (en) | Two-position five-way valve | |
| CN103117148A (en) | Proportion electromagnet | |
| CN202629271U (en) | Self-hold electromagnetic valve | |
| CN202673810U (en) | Direct-acting type three-way proportional throttling valve | |
| CN102853115B (en) | Energy-saving bistable pneumatic control valve | |
| CN203604737U (en) | Induction safety valve with magnetic exchange valve | |
| CN203362682U (en) | Differential oil supplementing hydraulic control device of electro-hydraulic proportional cartridge valve | |
| CN204756100U (en) | Pulse control automatically controlled valve of consumption position feedback bistable state that declines | |
| CN203585448U (en) | One-way throttle valve | |
| CN203103049U (en) | Ratio electromagnet | |
| CN202040402U (en) | Magnetic exchange valve with electronic type pressure sensor | |
| CN207111564U (en) | A kind of high-pressure high-flow two-way plug-in valve direction controlling cover plate | |
| CN203172060U (en) | Press machine liquid control system | |
| CN210700691U (en) | Speed-adjustable fluid nozzle structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131030 |