CN112833218B - Double-path load proportion reversing valve - Google Patents
Double-path load proportion reversing valve Download PDFInfo
- Publication number
- CN112833218B CN112833218B CN202110186669.4A CN202110186669A CN112833218B CN 112833218 B CN112833218 B CN 112833218B CN 202110186669 A CN202110186669 A CN 202110186669A CN 112833218 B CN112833218 B CN 112833218B
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- Prior art keywords
- oil
- reversing
- port
- valve
- ports
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- 238000007789 sealing Methods 0.000 claims abstract description 32
- 230000007935 neutral effect Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 135
- 238000000034 method Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0603—Multiple-way valves
- F16K31/061—Sliding valves
- F16K31/0613—Sliding valves with cylindrical slides
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Multiple-Way Valves (AREA)
Abstract
The invention provides a double-path load proportional reversing valve, and belongs to the field of reversing valve manufacturing; the invention comprises the following steps: a housing and a valve core; the shell is internally provided with a high-pressure oil port, two oil return ports and two working oil ports; the two working oil ports are positioned at two sides of the high-pressure oil port and between the two oil return ports; the valve core is sleeved in the two sliding holes; the surface of each sliding hole, which is contacted with the valve core, is a radial sealing surface; the shell is also provided with two reversing oil ports, and each reversing oil port corresponds to the radial sealing surface; annular oil grooves are formed in two sides of each radial sealing surface; and the annular oil grooves on each radial sealing surface are communicated with the reversing oil ports corresponding to the radial sealing surfaces. According to the invention, the two reversing oil ports are additionally arranged on the valve body, so that the control of the two load movements with the action sequence can be realized by only adopting one proportional reversing valve, and the valve has the characteristics of simple and compact structure, economy in control, convenience, low failure rate, low cost and the like, and is worthy of popularization.
Description
Technical Field
The invention relates to a valve manufacturing technology, in particular to a double-load proportional reversing valve, and belongs to the technical field of hydraulic equipment manufacturing.
Background
The reversing valve is very commonly applied as a hydraulic element for controlling the on-off and reversing of an oil way. The common reversing valve is of a slide valve type structure, a valve core of the common reversing valve slides in a valve body, and different oil ports are communicated or closed through reversing of the switching valve core.
The proportional reversing valve can realize continuous displacement control due to the valve core, and is widely applied to various control loops; the existing proportional reversing valve only has four oil ports, and can control one path of load to act; if two paths of loads need to be controlled to act, and the two paths of loads have an acting sequence, the existing proportional reversing valve is obviously insufficient, and a group of control valves need to be additionally added, so that the cost is increased, the system volume is enlarged, and the failure rate of the system is improved; according to the invention, through the structural design of the proportional reversing valve, a plurality of oil ports are additionally arranged, and the valve core of the proportional reversing valve can realize continuous displacement control, so that two paths of load actuation with actuation sequence can be controlled.
Therefore, there is a need in the art for a proportional reversing valve that can achieve continuous displacement control and can act on different loads sequentially.
Disclosure of Invention
The invention provides a novel double-path load proportion reversing valve, which solves the technical problem that the reversing valve in the prior art cannot control two loads successively by adding two reversing oil ports.
The double-load proportional reversing valve provided by the embodiment of the invention comprises: a housing and a valve core; the shell is internally provided with a high-pressure oil port, two oil return ports and two working oil ports; the two working oil ports are positioned at two sides of the high-pressure oil port and between the two oil return ports;
The valve core is sleeved in the two sliding holes; the surface of each sliding hole, which is contacted with the valve core, is a radial sealing surface; the shell is also provided with two reversing oil ports, and each reversing oil port corresponds to the radial sealing surface;
Annular oil grooves are formed in two sides of each radial sealing surface; the annular oil groove on each radial sealing surface is communicated with the reversing oil port corresponding to the radial sealing surface;
The valve core slides leftwards or rightwards, so that the high-pressure oil port is communicated with one reversing oil port through the annular oil groove, and the other reversing oil port is communicated with the oil return port through the annular oil groove; the valve core continuously slides in the sliding hole, so that the high-pressure oil port is communicated with one of the working oil ports, and the other working oil port is communicated with the oil return port.
The double-load proportional reversing valve, wherein the part of the valve core contacted with the radial sealing surface is a shoulder;
And when the valve core is in a neutral state, two sides of each shoulder are sealed with one of the working oil ports.
The two-way load proportional reversing valve is characterized in that two ends of the shell are respectively provided with the oil return cavities, and the two oil return cavities are respectively connected with the two oil return openings.
The double-load proportional reversing valve is characterized in that an oil guide channel is arranged between the reversing oil port and each annular oil groove; each annular oil groove is communicated with the corresponding reversing oil port through one oil guide channel.
The double-load proportional reversing valve is characterized in that the valve core is provided with a plurality of throttling grooves; the valve core slides, and the annular oil groove is communicated with the high-pressure oil port/the oil return port through the throttling groove.
The two-way load proportion reversing valve is characterized in that on each radial sealing surface, the reversing oil ports are respectively communicated with two different annular oil grooves which are respectively positioned on two sides of the working oil port corresponding to the radial sealing surface.
The two-way load proportional reversing valve is characterized in that two sides of the shell are respectively provided with an electromagnet, and two ends of the two electromagnets are respectively contacted with two ends of the valve core;
the electromagnets are all provided with driving rods, and the electromagnets are connected with the end parts of the valve cores through the driving rods; and a pre-tightening spring is further arranged between the driving rod and the valve core.
The double-load proportional reversing valve is characterized in that the electromagnet is a proportional electromagnetic coil.
According to the invention, the two reversing oil ports are additionally arranged on the valve body, so that the control of the two load movements with the action sequence can be realized by only adopting one proportional reversing valve, and the valve has the characteristics of simple and compact structure, economy in control, convenience, low failure rate, low cost and the like, and is worthy of popularization.
Drawings
FIG. 1 is a schematic cross-sectional view of a two-way load proportional reversing valve according to an embodiment of the present invention;
Fig. 2 is an enlarged partial schematic view at M of fig. 1.
Detailed Description
The two-way load proportional reversing valve can be made of the following materials, and is not limited to the following materials, for example: valve core, hydraulic matching system, electric control device and other common components.
FIG. 1 is a schematic cross-sectional view of a two-way load proportional reversing valve according to an embodiment of the present invention; fig. 2 is an enlarged partial schematic view at M of fig. 1.
The double-load proportional reversing valve provided by the embodiment of the invention comprises: a housing 1 and a valve core 2; the shell 1 is internally provided with a high-pressure oil port P, two oil return ports T (T1 and T2 respectively) and two working oil ports (working oil ports A and B respectively).
The two working oil ports are positioned at two sides of the high-pressure oil port and between the two oil return ports; that is, T1, A, P, B, and T2 are in that order from left to right as in FIG. 1.
Two sliding holes are formed in the shell 1, and the valve core 2 is sleeved in the two sliding holes; the surface of each sliding hole, which is contacted with the valve core 2, is a radial sealing surface; the valve core 2 slides leftwards or rightwards, and one side of the sliding hole is opened, so that the high-pressure oil port P is communicated with one of the working oil ports; p is communicated with A to the left, and P is communicated with B to the right, so that high-pressure oil is led to the working oil port, and reversing action is performed.
In general, the high pressure oil port P is connected to a hydraulic pump in a hydraulic system for discharging high pressure hydraulic oil through the high pressure oil pipe P.
The two working ports a and B are respectively connected to two ends of a second load 62 (such as a reversing cylinder) so as to perform a reversing action through the oil inlet and outlet pipe.
The return port T is typically connected to a hydraulic tank to facilitate draining low pressure oil to the tank from the non-working side of the actuator. In the working process of the reversing valve, one working oil port is opened, the other working oil port automatically returns oil, and low-pressure oil is discharged into the oil tank.
The two-way load proportion reversing valve of the embodiment, wherein the part of the valve core 2 contacted with the radial sealing surface is a shoulder; and each shoulder is used for sealing two working oil ports respectively under the non-sliding state of the valve core 2, so that the working oil ports are prevented from being communicated with a high-pressure oil port or an oil return port.
In the two-way load proportional reversing valve of this embodiment, two ends of the housing 1 are oil return chambers (respectively, a left oil return chamber and a right oil return chamber), and the two oil return chambers are respectively connected with the oil return port. The left oil return cavity and the right oil return cavity are respectively communicated with oil outlets T1 and T2
Two reversing oil ports 3 (specifically, A1 and B1 respectively connected to two ends of the first load 61) are further arranged on the housing 1, and each reversing oil port 3 corresponds to the radial sealing surface; the radial sealing surfaces are positioned on two sides of the high-pressure oil port P.
As shown in fig. 2, both sides of each of the radial sealing surfaces are provided with annular oil grooves 30; the annular oil groove 30 on each radial sealing surface is communicated with the reversing oil port 3 corresponding to the radial sealing surface.
In general, as shown in fig. 2, an oil guiding channel 31 is disposed between the reversing oil port 3 and each of the annular oil grooves 30; each annular oil groove 30 is respectively communicated with the corresponding reversing oil port 3 through one oil guide channel 31.
The valve core 2 slides leftwards or rightwards, so that the high-pressure oil port P is communicated with one reversing oil port 3 through the annular oil groove 30, and the other reversing oil port 3 is communicated with the oil return port through the annular oil groove 30; the valve core 2 continues to slide in the sliding hole, so that the high-pressure oil port P is communicated with one of the working oil ports, and the other working oil port is communicated with the oil return port.
Typically, the portion of the valve element 2 that contacts the radial sealing surface is a shoulder; and the valve core 2 is in a neutral state, and two sides of each shoulder are sealed with one of the working oil ports, so that the working oil port is prevented from being communicated with the high-pressure oil port/the oil return port. .
In the two-way load proportional reversing valve of the embodiment, as shown in fig. 1 and 2, a plurality of throttling grooves 20 are formed in the valve core 2; the valve core 2 slides, and the annular oil groove 30 is communicated with the high-pressure oil port/the oil return port through the throttling groove 20.
That is, each of the annular oil grooves 30 may communicate with the high-pressure oil port/the oil return port adjacent thereto.
In the two-way load proportional reversing valve of this embodiment, it is obvious that, on each radial sealing surface, the reversing oil port 3 is respectively connected to two different annular oil grooves 30, which are respectively located on two sides of the working oil port corresponding to the radial sealing surface.
In general, two sides of the housing 1 are respectively provided with an electromagnet, and two ends of the electromagnets are respectively contacted with two ends of the valve core 2.
Specifically, the electromagnets are all provided with driving rods 9, and the electromagnets are connected with the end parts of the valve cores 2 through the driving rods 9;
A pre-tightening spring 8 is also arranged between the driving rod 9 and the valve core 2. The pretensioning spring 8 can keep the spool in a neutral position without receiving an external force.
Preferably, the electromagnet is a proportional electromagnetic coil so as to accurately control the opening stroke of the valve core.
The working process of the embodiment of the invention is as follows:
the high-pressure oil port P introduces high-pressure oil, the main working oil ports A and B are connected with the load 62, the oil return ports T1 and T2 are communicated with the oil tank, the reversing oil ports (also called auxiliary working oil ports) A1 and B1 are connected with the first load 61, the first load 61 and the second load 62 have an actuation sequence requirement, and when the first load 61 moves to the right, the second load 62 can start to actuate upwards; when the first load 1 moves to the left, the second load 62 can start to move downwards.
According to the double-load proportional reversing valve, when the proportional electromagnetic coil is not electrified, the valve core is placed in a neutral position under the action of the spring, and all oil ports are not communicated; when a small control current is input to the proportional electromagnetic coil, the valve core moves leftwards, so that the high-pressure oil port P is communicated with the reversing oil port A1, the reversing oil port B1 is communicated with the oil port T2, and the first load 61 is driven to move rightwards; when the first load 61 moves in place, a larger control current is continuously input to the proportional electromagnetic coil, the valve core continuously moves leftwards, the high-pressure oil port P is communicated with the working oil port A, the working oil port B is communicated with the oil return port T2, the second load 62 is driven to move upwards, and the moving speed of the second load is changed along with the given control current.
Similarly, when a smaller control current is input to the proportional electromagnetic coil, the valve core moves to the right, so that the high-pressure oil port P is communicated with the reversing oil port B1, the reversing oil port A1 is communicated with the oil port T1, and the first load 61 is driven to move to the left; when the first load 61 moves in place, a larger control current is continuously input to the proportional electromagnetic coil, the valve core continuously moves to the right, so that the high-pressure oil port P is communicated with the working oil port B, the working oil port A is communicated with the oil port T1, the second load 62 is driven to move downwards, the moving speed of the second load 62 changes along with the given control current, and the control requirement of the sequence of the first load 61 and the second load 62 is realized.
According to the invention, the two reversing oil ports are additionally arranged on the valve body, so that the control of the two load movements with the action sequence can be realized by only adopting one proportional reversing valve, and the valve has the characteristics of simple and compact structure, economy in control, convenience, low failure rate, low cost and the like, and is worthy of popularization.
In addition, the double-load proportional reversing valve is low in manufacturing cost, compact in structural design, ingenious in structure, stable in starting and stopping, convenient to use and maintain and suitable for implementation of reversing actions of various double-load structural hydraulic systems.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments. From the description of the above embodiments, it will be apparent to those skilled in the art that the above example methods may be implemented by means of a superposition of some variants plus the necessary general techniques; of course, the method can also be realized by simplifying some important technical features. Based on such understanding, the technical solution of the present invention essentially or partly contributes to the prior art is: overall function and construction, and in combination with the construction described in connection with the various embodiments of the invention.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (7)
1. A two-way load proportional reversing valve, comprising: a housing and a valve core; the shell is internally provided with a high-pressure oil port, two oil return ports and two working oil ports; the two working oil ports are positioned at two sides of the high-pressure oil port and between the two oil return ports;
The valve core is sleeved in the two sliding holes; the surface of each sliding hole, which is contacted with the valve core, is a radial sealing surface; the shell is also provided with two reversing oil ports, and each reversing oil port corresponds to the radial sealing surface;
Annular oil grooves are formed in two sides of each radial sealing surface; the annular oil groove on each radial sealing surface is communicated with the reversing oil port corresponding to the radial sealing surface;
The valve core slides leftwards or rightwards, so that the high-pressure oil port is communicated with one reversing oil port through the annular oil groove, and the other reversing oil port is communicated with the oil return port through the annular oil groove; the valve core continuously slides in the sliding hole, so that the high-pressure oil port is communicated with one of the working oil ports, and the other working oil port is communicated with the oil return port;
And on each radial sealing surface, two different annular oil grooves which are respectively communicated with the reversing oil ports are respectively positioned on two sides of the working oil port corresponding to the radial sealing surface.
2. The two-way load proportional reversing valve of claim 1, wherein the portion of the valve spool in contact with the radial sealing surface is a shoulder;
And when the valve core is in a neutral state, two sides of each shoulder are sealed with one of the working oil ports.
3. The double-load proportional reversing valve according to claim 1, wherein two ends of the shell are respectively provided with an oil return cavity, and the two oil return cavities are respectively connected with the two oil return ports.
4. The two-way load proportional reversing valve according to claim 1, wherein an oil guide channel is arranged between the reversing oil port and each annular oil groove; each annular oil groove is communicated with the corresponding reversing oil port through one oil guide channel.
5. The two-way load proportional reversing valve according to claim 1, wherein the valve core is provided with a plurality of throttling grooves; the valve core slides, and the annular oil groove is communicated with the high-pressure oil port/the oil return port through the throttling groove.
6. A two-way load proportional reversing valve according to any one of claims 1 to 3, wherein two sides of the housing are respectively provided with an electromagnet, and two ends of the electromagnets are respectively contacted with two ends of the valve core;
the electromagnets are all provided with driving rods, and the electromagnets are connected with the end parts of the valve cores through the driving rods; and a pre-tightening spring is further arranged between the driving rod and the valve core.
7. The two-way load proportional reversing valve of claim 6, wherein the electromagnet is a proportional solenoid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110186669.4A CN112833218B (en) | 2021-02-18 | 2021-02-18 | Double-path load proportion reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110186669.4A CN112833218B (en) | 2021-02-18 | 2021-02-18 | Double-path load proportion reversing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112833218A CN112833218A (en) | 2021-05-25 |
| CN112833218B true CN112833218B (en) | 2024-05-24 |
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ID=75933683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110186669.4A Active CN112833218B (en) | 2021-02-18 | 2021-02-18 | Double-path load proportion reversing valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN112833218B (en) |
Citations (12)
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|---|---|---|---|---|
| US3500865A (en) * | 1967-04-19 | 1970-03-17 | Orenstein & Koppel Ag | Hydraulically operable control valve |
| GB8623938D0 (en) * | 1985-10-04 | 1986-11-12 | Baxter M D | Spool valve |
| US5996464A (en) * | 1998-12-07 | 1999-12-07 | Woodward Governor Company | Fail safe valve and multiplexed fluid control systems incorporating the same |
| CN102116328A (en) * | 2011-03-10 | 2011-07-06 | 三一重工股份有限公司 | M-type function reversing valve |
| CN202545886U (en) * | 2012-02-28 | 2012-11-21 | 皇甫岳伟 | Multifunctional valve and combination valve thereof |
| CN104315200A (en) * | 2014-11-07 | 2015-01-28 | 合肥长源液压股份有限公司 | Single valve element type multichannel reversing valve |
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| CN111503081A (en) * | 2020-05-26 | 2020-08-07 | 青岛鸿合数字技术有限公司 | Electric proportional control hydraulic multi-way reversing valve and control method thereof |
-
2021
- 2021-02-18 CN CN202110186669.4A patent/CN112833218B/en active Active
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|---|---|---|---|---|
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| GB8623938D0 (en) * | 1985-10-04 | 1986-11-12 | Baxter M D | Spool valve |
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| DE102016220855A1 (en) * | 2016-10-24 | 2018-04-26 | Festo Ag & Co. Kg | Valve slide and valve equipped with it |
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