CN109469660B - Double-valve-core control synchronous valve - Google Patents
Double-valve-core control synchronous valve Download PDFInfo
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- CN109469660B CN109469660B CN201811450120.6A CN201811450120A CN109469660B CN 109469660 B CN109469660 B CN 109469660B CN 201811450120 A CN201811450120 A CN 201811450120A CN 109469660 B CN109469660 B CN 109469660B
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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
Abstract
A double-valve-core control synchronous valve comprises a valve body, wherein an oil inlet cavity is formed in the lower portion of the valve body, a main valve core is arranged in the oil inlet cavity, an oil inlet is formed below the oil inlet cavity of the valve body, a left oil outlet and a right oil outlet are respectively formed in two side faces of the upper portion of the valve body, the left oil outlet is communicated with the oil inlet cavity through a left channel, the right oil outlet is communicated with the oil inlet cavity through a right channel, a left oil cavity is formed above the left channel of the valve body; oil outlet valve cores are arranged in the left oil cavity and the right oil cavity; the upper ends of the left oil cavity and the right oil cavity are through holes, oil outlet sealing bolts are arranged on the through holes, springs are arranged between the oil outlet sealing bolts and the oil outlet valve core, pistons are arranged at the left end and the right end of the main valve core respectively, the oil inlet cavity is a hollow hole, oil inlet sealing bolts are arranged at the left end and the right end of the oil inlet cavity respectively, a feedback gap is reserved between the oil inlet sealing bolts and the pistons, and the springs are arranged between the oil inlet sealing bolts at least one end of the oil inlet cavity and. The invention improves the control precision, greatly saves the cost and improves the working efficiency.
Description
Technical Field
The invention relates to the technical field of synchronous valves, in particular to a double-valve-core control synchronous valve.
Background
The synchronous valve is a hydraulic element which is used for ensuring that two or more than two actuators (hydraulic cylinders or hydraulic motors) can still obtain the same or proportional flow when bearing different loads, so that the actuators move at the same displacement or the same speed, and the synchronous valve is a synchronous lifting mechanism. When the synchronous lifting mechanism is used, one hydraulic valve is basically used for controlling one actuating element, and in the lifting process, the lifting of the support column is asynchronous due to different working resistances, so that the speed is asynchronous, and the movement precision is influenced. The typical structure of the traditional synchronous valve is a hook type and a reversing piston type, and experts and scholars at home and abroad are dedicated to the structure and performance research of the traditional synchronous valve for many years, but the basic structure of the traditional synchronous valve is not changed fundamentally until now. In recent years, the research on the synchronous valve by a plurality of scholars is mostly limited to a theoretical knowledge framework established by scholars in the 80 s, and the main research contents comprise two aspects:
factors influencing the steady-state and dynamic performances of the synchronous valve and improvement on the structure of the synchronous valve;
and (II) application analysis of the synchronous valve, such as a trailer drilling machine and a frame vehicle.
However, the development of modern machining techniques has not allowed the performance of conventional synchronous valves to be significantly improved, since the flow rates of conventional synchronous valves are only approximately equal, with errors in principle that are not infinitely reduced or eliminated by the increase in machining accuracy.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a double-valve-core control synchronous valve to solve the problem of low synchronous precision of the synchronous valve, improve the control precision, greatly save the cost and improve the working efficiency.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a double-valve-core control synchronous valve comprises a valve body, wherein an oil inlet cavity is formed in the lower portion of the valve body, a main valve core is arranged in the oil inlet cavity, an oil inlet is formed below the oil inlet cavity of the valve body, a left oil outlet and a right oil outlet are respectively formed in two side faces of the upper portion of the valve body, the left oil outlet is communicated with the oil inlet cavity through a left channel, the right oil outlet is communicated with the oil inlet cavity through a right channel, a left oil cavity is formed above the left channel of the valve body; oil outlet valve cores are arranged in the left oil cavity and the right oil cavity; the upper ends of the left oil cavity and the right oil cavity are through holes, oil outlet sealing bolts are arranged on the through holes, springs are arranged between the oil outlet sealing bolts and the oil outlet valve core, a three-way check valve is arranged between the left oil cavity and the right oil cavity of the valve body, a first inlet of the three-way check valve is communicated with the left oil cavity, a second inlet of the three-way check valve is communicated with the right oil cavity, outlets of the three-way check valve are respectively communicated with the through holes in the upper ends of the left oil cavity and the right oil cavity, pistons are respectively arranged at the left end and the right end of the main valve core, the oil inlet cavity is a hollow hole, oil inlet sealing bolts are respectively arranged at the left end and the right end of the oil inlet cavity, a feedback gap is reserved between the oil inlet sealing bolts and the pistons, the springs are arranged between the oil inlet sealing bolts at.
Therefore, when the hydraulic oil pressure control valve is used, the main valve core is located in the middle of the oil inlet cavity at the beginning, when oil with certain pressure exists in the oil inlet, the oil flows out from the oil outlet openings on the two sides of the main valve core, the oil outlet valve cores of the left oil cavity and the right oil cavity are pushed open, and the oil flows out from the left oil outlet and the right oil outlet; when the pressure at one side of the left oil outlet and the right oil outlet is high, the sealing steel ball of the three-way one-way valve is pushed to the other side under the action of the pressure, and the oil at the side with the high pressure enters the through holes at the upper ends of the left oil cavity and the right oil cavity through the three-way one-way valve, so that the opening of the oil outlet valve core is reduced, the outflow of the oil is reduced, the pressure of the left oil outlet is kept consistent with that of the right oil outlet, and the movement displacement or the speed of the actuating element respectively driven by the oil pressure of the left oil outlet. Under the condition, because the pressures of the left oil outlet and the right oil outlet are different, the pressure acts on two sides of the main valve core through the left feedback channel and the right feedback channel, the main valve core moves to one side with small pressure under the condition that the pressures of the two sides are different, the pressure of the oil outlet at the side with small pressure is reduced, and the pressure of the left oil outlet and the pressure of the right oil outlet are further adjusted, so that the displacement or the speed of the actuating element is further ensured, and the synchronous work is completed.
As an improvement of the invention, a spring is arranged between the oil inlet sealing bolt at the left end of the oil inlet cavity and the piston, a threaded through hole is formed in the middle of the oil inlet sealing bolt at the left end of the oil inlet cavity, a pre-tightening bolt is arranged in the threaded through hole, and the inner end of the pre-tightening bolt is in contact pressure with the spring.
As an improvement of the invention, a sealing gasket is arranged between the oil inlet sealing bolt and the valve body.
As an improvement of the three-way check valve, a first pressure relief hole communicated with an outlet of the three-way check valve is formed in the valve body, and a first pressure relief sealing bolt is arranged on the first pressure relief hole.
As an improvement of the invention, a second pressure relief hole communicated with the left feedback channel and a third pressure relief hole communicated with the right feedback channel are respectively arranged on the valve body, a second pressure relief sealing bolt is arranged on the second pressure relief hole, and a third pressure relief sealing bolt is arranged on the third pressure relief hole.
Compared with the prior art, the technical scheme of the invention has the following innovation points and beneficial effects:
according to the invention, the three-way one-way valve is arranged, so that the pressures of the left oil outlet and the right oil outlet are kept consistent, and the movement displacement or speed of the actuating elements respectively driven by the oil pressure of the left oil outlet and the oil pressure of the right oil outlet is kept consistent;
meanwhile, the main valve core moves to one side with small pressure under the condition that the pressures of the two sides are different by acting on the two sides of the main valve core through the left feedback channel and the right feedback channel, so that the pressure of the oil outlet at the side with small pressure is reduced, the pressure of the left oil outlet and the pressure of the right oil outlet are further adjusted, the displacement or the speed of an actuating element is further ensured, and synchronous work is completed;
the invention not only improves the synchronous precision of the synchronous valve, but also improves the control precision, greatly saves the cost and improves the working efficiency.
Drawings
FIG. 1 is a schematic diagram of a dual spool controlled synchronous valve of the present invention.
Detailed Description
The invention is further illustrated by the following figures and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the relevant aspects of the present invention are shown in the drawings.
Examples
Referring to fig. 1, a dual spool control synchronous valve includes a valve body 10, an oil inlet chamber 11 is provided at a lower portion of the valve body 10, a main valve spool 20 is provided in the oil inlet chamber 11, an oil inlet 12 is provided below the oil inlet chamber 11 of the valve body 10, a left oil outlet 13 and a right oil outlet 14 are respectively provided at two side faces of an upper portion of the valve body 10, the left oil outlet 13 is communicated with the oil inlet chamber 11 through a left channel 15, the right oil outlet 14 is communicated with the oil inlet chamber 11 through a right channel 16, a left oil chamber 17 is provided above the left channel 15 of the valve body 10, and a right oil chamber; an oil outlet valve core 40 is arranged in the left oil cavity 17 and the right oil cavity 18;
the upper ends of the left oil chamber 17 and the right oil chamber 18 are through holes, an oil outlet sealing bolt 42 is arranged on the through holes, a spring 41 is arranged between the oil outlet sealing bolt 42 and the oil outlet valve core 40, a three-way check valve 60 is arranged between the left oil chamber 17 and the right oil chamber 18 of the valve body 10, a first inlet 61 of the three-way check valve 60 is communicated with the left oil chamber 17, a second inlet 62 is communicated with the right oil chamber 18, the outlet 63 is respectively communicated with through holes at the upper ends of the left oil chamber 17 and the right oil chamber 18, pistons 30 are respectively arranged at the left end and the right end of the main valve core 20, the oil inlet chamber 11 is a hollow hole, oil inlet sealing bolts 50 are respectively arranged at the left end and the right end of the oil inlet chamber 11, a feedback gap is reserved between the oil inlet sealing bolts 50 and the pistons 30, a spring 51 is arranged between the oil inlet sealing bolt 50 at least one end of the oil inlet chamber 11 and the pistons, the left channel 15 is communicated with the feedback gap at the left end of the oil inlet chamber 11 through a left feedback channel 151, and the right channel 16 is communicated with the feedback gap at the.
Therefore, when the hydraulic oil pressure control valve is used, the main valve core is located in the middle of the oil inlet cavity at the beginning, when oil with certain pressure exists in the oil inlet, the oil flows out from the oil outlet openings on the two sides of the main valve core, the oil outlet valve cores of the left oil cavity and the right oil cavity are pushed open, and the oil flows out from the left oil outlet and the right oil outlet; when the pressure at one side of the left oil outlet and the right oil outlet is high, the sealing steel ball of the three-way one-way valve is pushed to the other side under the action of the pressure, and the oil at the side with the high pressure enters the through holes at the upper ends of the left oil cavity and the right oil cavity through the three-way one-way valve, so that the opening of the oil outlet valve core is reduced, the outflow of the oil is reduced, the pressure of the left oil outlet is kept consistent with that of the right oil outlet, and the movement displacement or the speed of the actuating element respectively driven by the oil pressure of the left oil outlet. Under the condition, because the pressures of the left oil outlet and the right oil outlet are different, the pressure acts on two sides of the main valve core through the left feedback channel and the right feedback channel, the main valve core moves to one side with small pressure under the condition that the pressures of the two sides are different, the pressure of the oil outlet at the side with small pressure is reduced, and the pressure of the left oil outlet and the pressure of the right oil outlet are further adjusted, so that the displacement or the speed of the actuating element is further ensured, and the synchronous work is completed.
In this embodiment, a spring 51 is disposed between the oil inlet sealing bolt 50 at the left end of the oil inlet cavity 11 and the piston 30, a threaded through hole is disposed in the middle of the oil inlet sealing bolt 50 at the left end of the oil inlet cavity 11, a pre-tightening bolt 52 is disposed in the threaded through hole, and the inner end of the pre-tightening bolt 52 contacts and presses the spring 51. The oil inlet sealing bolt and the pre-tightening bolt are matched for use, so that the sealing function can be achieved, and the tightness degree of the main valve core can be adjusted.
In this embodiment, a sealing washer 53 is disposed between the oil inlet sealing bolt 50 and the valve body 10. The oil inlet cavity is further sealed by a sealing gasket.
In this embodiment, the valve body 10 is provided with a first pressure relief hole communicated with the outlet of the three-way check valve 60, and the first pressure relief hole is provided with a first pressure relief sealing bolt 64. The hydraulic oil in the through holes at the upper ends of the left oil cavity and the right oil cavity can be decompressed through the first decompression hole.
In this embodiment, the valve body 10 is provided with a second pressure relief hole communicated with the left feedback channel 151 and a third pressure relief hole communicated with the right feedback channel 161, the second pressure relief hole is provided with a second pressure relief sealing bolt 152, and the third pressure relief hole is provided with a third pressure relief sealing bolt 162. And hydraulic oil in the feedback channel can be decompressed through the second pressure relief hole and the third pressure relief hole.
Compared with the prior art, the technical scheme of the invention has the following innovation points and beneficial effects:
according to the invention, the three-way one-way valve is arranged, so that the pressures of the left oil outlet and the right oil outlet are kept consistent, and the movement displacement or speed of the actuating elements respectively driven by the oil pressure of the left oil outlet and the oil pressure of the right oil outlet is kept consistent;
meanwhile, the main valve core moves to one side with small pressure under the condition that the pressures of the two sides are different by acting on the two sides of the main valve core through the left feedback channel and the right feedback channel, so that the pressure of the oil outlet at the side with small pressure is reduced, the pressure of the left oil outlet and the pressure of the right oil outlet are further adjusted, the displacement or the speed of an actuating element is further ensured, and synchronous work is completed;
the invention not only improves the synchronous precision of the synchronous valve, but also improves the control precision, greatly saves the cost and improves the working efficiency.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (5)
1. The utility model provides a dual case control synchro valve, includes the valve body, and the valve body lower part is equipped with the oil feed chamber, is equipped with main valve core, its characterized in that in the oil feed chamber: an oil inlet is formed below the oil inlet cavity of the valve body, a left oil outlet and a right oil outlet are respectively formed in two side faces of the upper portion of the valve body, the left oil outlet is communicated with the oil inlet cavity through a left channel, the right oil outlet is communicated with the oil inlet cavity through a right channel, a left oil cavity is formed above the left channel of the valve body, and a right oil cavity is formed above the right channel of the valve body; oil outlet valve cores are arranged in the left oil cavity and the right oil cavity; the upper ends of the left oil cavity and the right oil cavity are through holes, oil outlet sealing bolts are arranged on the through holes, springs are arranged between the oil outlet sealing bolts and the oil outlet valve core, a three-way check valve is arranged between the left oil cavity and the right oil cavity of the valve body, a first inlet of the three-way check valve is communicated with the left oil cavity, a second inlet of the three-way check valve is communicated with the right oil cavity, outlets of the three-way check valve are respectively communicated with the through holes in the upper ends of the left oil cavity and the right oil cavity, pistons are respectively arranged at the left end and the right end of the main valve core, the oil inlet cavity is a hollow hole, oil inlet sealing bolts are respectively arranged at the left end and the right end of the oil inlet cavity, a feedback gap is reserved between the oil inlet sealing bolts and the pistons, the springs are arranged between the oil inlet sealing bolts at.
2. The dual spool controlled synchronous valve of claim 1, wherein: a spring is arranged between the oil inlet sealing bolt at the left end of the oil inlet cavity and the piston, a threaded through hole is formed in the middle of the oil inlet sealing bolt at the left end of the oil inlet cavity, a pre-tightening bolt is arranged in the threaded through hole, and the inner end of the pre-tightening bolt is in contact pressure with the spring.
3. The dual spool controlled synchronous valve of claim 1, wherein: and a sealing gasket is arranged between the oil inlet sealing bolt and the valve body.
4. The dual spool controlled synchronous valve of claim 1, wherein: the valve body is provided with a first pressure relief hole communicated with an outlet of the three-way one-way valve, and the first pressure relief hole is provided with a first pressure relief sealing bolt.
5. The dual spool controlled synchronous valve of claim 1, wherein: and a second pressure relief hole communicated with the left feedback channel and a third pressure relief hole communicated with the right feedback channel are respectively formed in the valve body, a second pressure relief sealing bolt is arranged on the second pressure relief hole, and a third pressure relief sealing bolt is arranged on the third pressure relief hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811450120.6A CN109469660B (en) | 2018-11-30 | 2018-11-30 | Double-valve-core control synchronous valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811450120.6A CN109469660B (en) | 2018-11-30 | 2018-11-30 | Double-valve-core control synchronous valve |
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| Publication Number | Publication Date |
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| CN109469660A CN109469660A (en) | 2019-03-15 |
| CN109469660B true CN109469660B (en) | 2020-03-06 |
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| CN201811450120.6A Active CN109469660B (en) | 2018-11-30 | 2018-11-30 | Double-valve-core control synchronous valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110273878A (en) * | 2019-07-11 | 2019-09-24 | 南通翔骜液压润滑设备有限公司 | Non-return overflow combiner valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58175717A (en) * | 1982-04-09 | 1983-10-15 | Taisan Kogyo Kk | Fuel oil quantity controlling device for combustion device |
| CN85104146A (en) * | 1985-06-03 | 1986-12-03 | 叶光祖 | Hand controled synchronous reversal valve |
| IES20040688A2 (en) * | 2004-10-12 | 2006-04-19 | James J Mcinerney | A fluid control valve |
| CN107061399B (en) * | 2017-02-21 | 2018-09-28 | 江苏恒立液压科技有限公司 | Flow divider-combiner |
| CN107013521B (en) * | 2017-04-11 | 2018-06-08 | 鑫矿液压科技有限公司 | A kind of synchronous valve |
| CN109667802B (en) * | 2018-11-30 | 2020-06-19 | 广东轻工职业技术学院 | Hybrid control synchronous valve |
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