CN112833218A - Two-way load proportional reversing valve - Google Patents
Two-way load proportional reversing valve Download PDFInfo
- Publication number
- CN112833218A CN112833218A CN202110186669.4A CN202110186669A CN112833218A CN 112833218 A CN112833218 A CN 112833218A CN 202110186669 A CN202110186669 A CN 202110186669A CN 112833218 A CN112833218 A CN 112833218A
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- oil
- reversing
- port
- valve
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- 238000007789 sealing Methods 0.000 claims abstract description 29
- 230000033001 locomotion Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 136
- 238000000034 method Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
-
- 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
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- 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 two-way load proportional reversing valve, belonging to the field of reversing valve manufacturing; the invention comprises the following steps: a housing and a valve cartridge; a high-pressure oil port, two oil return ports and two working oil ports are arranged in the shell; the two working oil ports are positioned on two sides of the high-pressure oil port and positioned between the two oil return ports; the shell is provided with two sliding holes, and the valve core is sleeved in the two sliding holes; the surface of each sliding hole, which is in contact 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 groove on each radial sealing surface is communicated with the reversing oil port corresponding to the radial sealing surface. The two reversing oil ports are additionally arranged on the valve body, so that two load motions with an actuating sequence can be controlled by only adopting one proportional reversing valve, and the valve has the characteristics of simple and compact structure, economic 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-path load proportional reversing valve, and belongs to the technical field of hydraulic equipment manufacturing.
Background
The reversing valve is used as a hydraulic element for controlling the on-off and reversing of an oil path, and is very commonly applied. The common reversing valve is of a slide valve type structure, a valve core of the reversing valve slides in a valve body, and the reversing is realized by switching the valve core, so that different oil ports are communicated or closed.
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 action sequence, the conventional proportional reversing valve obviously cannot be competent, and a group of control valves needs to be additionally added, so that the cost is increased, the volume of the system 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 newly added, and because the valve core of the proportional reversing valve can realize continuous displacement control, two paths of load actuation with actuation sequence can be controlled.
Therefore, there is a need in the art for a proportional directional valve that can achieve continuous displacement control and can act on different loads in sequence.
Disclosure of Invention
The invention provides a novel two-way load proportional reversing valve, which solves the technical problem that the reversing valve in the prior art cannot realize sequential control of two loads by adding two reversing oil ports.
The two-way load proportional reversing valve of the embodiment of the invention comprises: a housing and a valve cartridge; a high-pressure oil port, two oil return ports and two working oil ports are arranged in the shell; the two working oil ports are positioned on two sides of the high-pressure oil port and positioned between the two oil return ports;
the shell is provided with two sliding holes, and the valve core is sleeved in the two sliding holes; the surface of each sliding hole, which is in contact 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 continues to slide in the slide 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 two-way load proportional reversing valve is characterized in that the part of the valve core, which is in contact with the radial sealing surface, is a shoulder;
and when the valve core is in a middle position state, two sides of each shoulder seal 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 an oil return cavity, and the two oil return cavities are respectively connected with the two oil return ports.
The two-way 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 two-way 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 proportional reversing valve is characterized in that the two annular oil grooves are respectively communicated with the reversing oil port on each radial sealing surface, and 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 electromagnets are respectively arranged on two sides of the shell, and two ends of the two electromagnets are respectively contacted with two ends of the valve core;
the electromagnets are 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 also arranged between the driving rod and the valve core.
The two-way load proportional reversing valve as described above, wherein the electromagnet is a proportional solenoid.
The two reversing oil ports are additionally arranged on the valve body, so that two load motions with an actuating sequence can be controlled by only adopting one proportional reversing valve, and the valve has the characteristics of simple and compact structure, economic 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 a partially enlarged view of a portion M of fig. 1.
Detailed Description
The two-way load proportional reversing valve of the present invention can be made of, and is not limited to, the following materials, for example: common components such as a valve core, a hydraulic matching system, an electric control device and the like.
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 a partially enlarged view of a portion M of fig. 1.
The two-way load proportional reversing valve of the embodiment of the invention comprises: a housing 1 and a valve core 2; a high-pressure oil port P, two oil return ports T (T1 and T2, respectively) and two working oil ports (a working oil port a and a working oil port B, respectively) are arranged in the housing 1.
The two working oil ports are positioned on two sides of the high-pressure oil port and positioned between the two oil return ports; that is, as shown in fig. 1, T1, A, P, B, and T2 are in this order from left to right.
The shell 1 is provided with two slide holes, and the valve core 2 is sleeved in the two slide holes; the surface of each slide hole, which is in contact with the valve core 2, is a radial sealing surface; the valve core 2 slides leftwards or rightwards, and the sliding hole on one side is opened, so that the high-pressure oil port P is communicated with one of the working oil ports; and P is communicated with A when the hydraulic cylinder slides leftwards, and P is communicated with B when the hydraulic cylinder slides rightwards, so that the high-pressure oil is guided to the working oil port, and the reversing action is executed.
Generally, the high-pressure oil port P is connected to a hydraulic pump in the hydraulic system, and is used for releasing high-pressure hydraulic oil through the high-pressure oil pipe P.
The two working oil ports a and B are connected to two ends of a second load 62 (e.g., a reversing cylinder) respectively, so as to perform a reversing action through an oil inlet and outlet pipe.
The return port T is typically connected to a hydraulic tank to facilitate the non-working side of the actuator to drain low pressure oil to the tank. 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.
In the two-way load proportional reversing valve of the embodiment, the part of the valve core 2, which is in contact with the radial sealing surface, is a shoulder; and when the valve core 2 is in a non-sliding state, each shoulder seals two working oil ports respectively, so that the working oil ports are prevented from being communicated with a high-pressure oil port or an oil return port.
The two-way load proportional reversing valve of this embodiment, wherein, the both ends of casing 1 are respectively for returning oil chamber (being left side oil chamber and right side oil chamber respectively), two it links to each other respectively to return oil chamber with the oil return opening. The left oil return cavity and the right oil return cavity are respectively communicated with the oil outlets T1 and T2
The shell 1 is further provided with two reversing oil ports 3 (specifically, a1 and B1 which are respectively connected with two ends of the first load 61), 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, each of the radial seal faces is provided with annular oil grooves 30 on both sides; and 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 passage 31 is provided between the oil reversing port 3 and each of the annular oil grooves 30; each annular oil groove 30 is communicated with the corresponding reversing oil port 3 through one oil guide passage 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 slide 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.
Usually, the part of the valve core 2 contacting with the radial sealing surface is a shoulder; when the valve core 2 is in a middle position state, two sides of each shoulder seal one of the working oil ports, and the working oil ports are prevented from being communicated with the high-pressure oil port/the oil return port. .
In the two-way load proportional reversing valve of the present embodiment, as shown in fig. 1 and 2, a plurality of throttling grooves 20 are formed on 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 annular oil groove 30 may communicate with the high pressure port/the oil return port adjacent thereto.
In the two-way load proportional reversing valve of this embodiment, it is obvious that, on each of the radial sealing surfaces, the reversing oil ports 3 are respectively communicated with two different annular oil grooves 30, which are respectively located on two sides of the working oil port corresponding to the radial sealing surface.
Generally, two sides of the housing 1 are respectively provided with an electromagnet, and two ends of the two electromagnets are respectively contacted with two ends of the valve core 2.
Specifically, the electromagnets are provided with driving rods 9, and the electromagnets are connected with the end parts of the valve cores 2 through the driving rods 9;
and a pre-tightening spring 8 is also arranged between the driving rod 9 and the valve core 2. The biasing spring 8 can keep the valve element 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:
high-pressure oil is introduced into a high-pressure oil port P, main working oil ports A and B are connected with a load 62, oil return ports T1 and T2 are communicated with an oil tank, reversing oil ports (also called auxiliary working oil ports) A1 and B1 are connected with a first load 61, the first load 61 and a second load 62 have requirements on the actuation sequence, and when the first load 61 moves rightwards to a proper position, 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 downward.
According to the two-way load proportional reversing valve, when the proportional electromagnetic coil is not electrified, the valve core is placed at the neutral position under the action of the spring, and all oil ports are not communicated; when a smaller control current is input into the proportional electromagnetic coil, the valve core moves leftwards, so that the high-pressure oil port P is firstly 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 to the right position, the proportional solenoid continues to input a large control current, the valve core continues to move left, so that 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 speed of the movement of the second load varies with the given control current.
Similarly, when a smaller control current is input into the proportional solenoid, the valve core moves to the right, so that the high-pressure oil port P is firstly communicated with the reversing oil port B1, and the reversing oil port a1 is communicated with the oil port T1 to drive the first load 61 to move to the left; when the first load 61 moves in place, the proportional solenoid continues to input a large control current, the valve core continues to move rightwards, 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 speed of the movement of the second load is changed along with the given control current, and the control requirement that the first load 61 and the second load 62 have the sequential actuation sequence is met.
The two reversing oil ports are additionally arranged on the valve body, so that two load motions with an actuating sequence can be controlled by only adopting one proportional reversing valve, and the valve has the characteristics of simple and compact structure, economic control, convenience, low failure rate, low cost and the like, and is worthy of popularization.
In addition, the two-way load proportional reversing valve is low in manufacturing cost, compact in structural design, ingenious in construction, stable in starting and stopping, convenient to use and maintain and suitable for implementation of reversing actions of hydraulic systems with various types of double-load structures.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments. Through the above description of the embodiments, those skilled in the art will clearly understand that the above embodiment method can be implemented by some modifications plus the necessary general technical overlap; of course, the method can also be realized by simplifying some important technical features in the upper level. Based on such understanding, the technical solution of the present invention essentially or contributing to the prior art is: overall function and construction, and to cooperate with the structure described in the various embodiments of the present invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A two-way load proportional reversing valve, comprising: a housing and a valve cartridge; a high-pressure oil port, two oil return ports and two working oil ports are arranged in the shell; the two working oil ports are positioned on two sides of the high-pressure oil port and positioned between the two oil return ports;
the shell is provided with two sliding holes, and the valve core is sleeved in the two sliding holes; the surface of each sliding hole, which is in contact 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 continues to slide in the slide 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.
2. The two-way load proportional reversing valve of claim 1, wherein the portion of the spool in contact with the radial seal surface is a shoulder;
and when the valve core is in a middle position state, two sides of each shoulder seal one of the working oil ports.
3. The two-way load proportional reversing valve according to claim 1, wherein two ends of the housing are respectively provided with oil return cavities, 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. The two-way load proportional reversing valve according to claim 1, wherein two different annular oil grooves, through which the reversing oil ports are respectively communicated, on each radial sealing surface are respectively located on both sides of the working oil port corresponding to the radial sealing surface.
7. The two-way load proportional reversing valve according to any one of claims 1-3, wherein electromagnets are respectively disposed on two sides of the housing, and two ends of the two electromagnets are respectively in contact with two ends of the valve core;
the electromagnets are 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 also arranged between the driving rod and the valve core.
8. The two-way load proportional reversing valve of claim 7, 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 true CN112833218A (en) | 2021-05-25 |
| CN112833218B CN112833218B (en) | 2024-05-24 |
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| 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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116877523A (en) * | 2023-07-07 | 2023-10-13 | 湖州生力液压有限公司 | Proportional reversing valve for swash plate type axial plunger pump |
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2021
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116877523A (en) * | 2023-07-07 | 2023-10-13 | 湖州生力液压有限公司 | Proportional reversing valve for swash plate type axial plunger pump |
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| Publication number | Publication date |
|---|---|
| CN112833218B (en) | 2024-05-24 |
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