CN112555218A - Valve body structure of reversing valve - Google Patents
Valve body structure of reversing valve Download PDFInfo
- Publication number
- CN112555218A CN112555218A CN202011508228.3A CN202011508228A CN112555218A CN 112555218 A CN112555218 A CN 112555218A CN 202011508228 A CN202011508228 A CN 202011508228A CN 112555218 A CN112555218 A CN 112555218A
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- China
- Prior art keywords
- oil
- port
- reversing valve
- valve body
- oil return
- 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.)
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Links
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 230000008569 process Effects 0.000 claims abstract description 12
- 230000009471 action Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000000149 penetrating effect Effects 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 96
- 239000010720 hydraulic oil Substances 0.000 description 9
- 239000012467 final product Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000007246 mechanism Effects 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
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0401—Valve members; Fluid interconnections therefor
- F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves
-
- 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/041—Construction of housing; Use of materials therefor of sliding valves cylindrical slide valves
-
- 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/048—Electromagnetically actuated valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Electromagnetism (AREA)
- Multiple-Way Valves (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention provides a reversing valve body structure, 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, an oil return port and two different working oil ports are arranged in the shell; the shell is provided with two sliding holes, and the valve core is sleeved in the two sliding holes; the valve core slides leftwards or rightwards, and the sliding hole on one side is opened, so that the high-pressure oil port is communicated with one of the working oil ports; the surface of the slide hole, which is in contact with the valve core, is a radial sealing surface; and an annular oil groove is arranged on the radial sealing surface and communicated with the oil return port. According to the reversing valve body structure, the high-pressure oil port is sealed through the valve core, and in the working process or the shutdown state, high-pressure oil preferably enters the annular oil groove after penetrating outwards through the axial direction of the valve core, so that failure of an execution element caused by leakage of the high-pressure oil to the inclined port of the non-working oil port is avoided, and the stability and reliability of the action of the reversing valve can be effectively guaranteed.
Description
Technical Field
The invention relates to a valve manufacturing technology, in particular to a reversing valve body structure, 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. A common reversing valve is of a slide valve type structure, a valve core of the reversing valve slides in a valve body, and different oil ports are communicated or closed by switching the reversing of the valve core; because the valve core and the valve body are in sliding fit, hydraulic oil on the high-pressure oil port side can leak to the low-pressure oil port side through a gap on the sliding surface, if the low-pressure oil port side is connected with an executing element, the existing position of the executing element can be changed along with continuous accumulation of leaked hydraulic oil, and the valve core and the valve body cannot be applied to occasions with strict position requirements on the executing element.
Therefore, there is a need in the art for a diverter valve that prevents high pressure oil from penetrating into low pressure areas.
Disclosure of Invention
The invention provides a novel reversing valve body structure, which is used for solving the technical problem of abnormal action of an actuating element caused by the fact that high-pressure oil permeates to a non-working port in the reversing valve in the prior art by leading out high-pressure oil preferentially from an annular oil groove.
The reversing valve body structure of the embodiment of the invention comprises: a housing and a valve cartridge; a high-pressure oil port, an oil return port and two different working oil ports are arranged in the shell;
the shell is provided with two sliding holes, and the valve core is sleeved in the two sliding holes; the valve core slides leftwards or rightwards, and the sliding hole on one side is opened, so that the high-pressure oil port is communicated with one of the working oil ports;
the surface of the slide hole, which is in contact with the valve core, is a radial sealing surface; and an annular oil groove is arranged on the radial sealing surface and communicated with the oil return port.
The valve body structure of the reversing valve, wherein 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 non-sliding state, each shoulder seals the two working oil ports respectively.
The reversing valve body structure 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 oil return port.
The reversing valve body structure is characterized in that two ends of each sliding hole are respectively provided with one radial sealing surface, and each radial sealing surface is provided with an annular oil groove.
In the valve body structure of the reversing valve, each annular oil groove is communicated with an oil return branch, and an oil return process hole is formed between every two adjacent oil return branches;
the oil return branch is connected with the oil return port through the oil return process hole.
The reversing valve body structure is characterized in that two sides of the shell are respectively provided with the electromagnets, and two ends of the two electromagnets are respectively contacted with two ends of the valve core.
The reversing valve body structure is characterized in that the electromagnets are respectively provided with a driving rod, and the electromagnets are connected with the end part of the valve core through the driving rods;
and a pre-tightening spring is also arranged between the driving rod and the valve core.
According to the reversing valve body structure, the high-pressure oil port is sealed through the valve core, and in the working process or the shutdown state, high-pressure oil preferably enters the annular oil groove after penetrating outwards through the axial direction of the valve core, so that failure of an execution element caused by leakage of the high-pressure oil to the inclined port of the non-working oil port is avoided, and the stability and reliability of the action of the reversing valve can be effectively guaranteed.
Meanwhile, the reversing valve body structure enables the valve core movement mechanism to stably act in a high pressure difference environment, improves the reliability and the service life of a system, and improves the quality of a final product.
Drawings
FIG. 1 is a schematic cross-sectional view of a valve body structure of a reversing valve according to an embodiment of the invention;
FIG. 2 is a schematic cross-sectional view of FIG. 1 in a rightward reversing state;
fig. 3 is a partially enlarged view of fig. 1.
Detailed Description
The valve body structure of the reversing valve can be made of the following materials, 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 valve body structure of a reversing valve according to an embodiment of the invention; FIG. 2 is a schematic sectional view of the right-hand side of the switch;
the reversing valve body structure of the embodiment of the invention comprises: a housing 1 and a valve core 2; a high-pressure oil port 3, an oil return port 5 and two different working oil ports 4 are arranged in the shell 1; in general, the high-pressure oil port 3 is connected to a hydraulic oil pump in the hydraulic system, and is configured to release high-pressure hydraulic oil through a high-pressure oil pipe P.
The two working oil ports 4 are respectively connected with two ends of the execution element so as to carry out execution actions through the oil outlet pipe A or the oil outlet pipe B.
The return port 5 is adapted to be connected to a return line T for draining low pressure oil to the tank on the non-active side of the actuator.
The shell 1 is provided with two slide holes, and the valve core 2 is sleeved in the two slide holes; the valve core 2 slides leftwards or rightwards, and the sliding hole on one side is opened, so that the high-pressure oil port 3 is communicated with one working oil port 4; therefore, high-pressure oil is led to the working oil port, and reversing action is further executed.
As shown in fig. 3, the surface of the slide hole, which is in contact with the valve core 2, is a radial sealing surface; an annular oil groove 50 is arranged on the radial sealing surface, and the annular oil groove 50 is communicated with the oil return opening 5.
In the invention, the valve core 2 is arranged in an axial through hole of the shell 1 and can slide left and right; the high-pressure oil port 3 is connected with a hydraulic source through a high-pressure oil pipe P; when the two ends of the valve core do not have the external force action such as electromagnetic force, hydraulic pressure and the like, the valve core is in a neutral position under the action of the springs 8 at the two sides, and the high-pressure oil port is not communicated at the moment; when the high-pressure oil port is connected to a high-pressure oil source, the valve core is in sliding fit with the reversing valve body, so a small axial gap exists between the sliding surface of the valve core and the sliding surface of the reversing valve body, and a small amount of hydraulic oil can leak out through the gap.
Because the structure of the reversing valve body is specially designed, a small amount of hydraulic oil can leak into the annular oil groove 50 of the reversing valve body through the axial clearance, and the hydraulic oil in the annular oil groove 50 flows out of the related oil way and flows into the oil tank through the oil return port 5; therefore, the high-pressure hydraulic oil of the high-pressure oil port flows back to the oil tank through the oil duct arranged in the reversing valve shell due to the axial clearance, and cannot leak to the working oil port of the reversing valve body, so that the position of the oil cylinder connected with the working oil port cannot be changed, and the hydraulic oil port is very suitable for occasions with strict requirements on the stop position of the oil cylinder.
According to the reversing valve body structure, the high-pressure oil port is sealed through the valve core, and in the working process or the shutdown state, high-pressure oil preferably enters the annular oil groove after penetrating outwards through the axial direction of the valve core, so that failure of an execution element caused by leakage of the high-pressure oil to the inclined port of the non-working oil port is avoided, and the stability and reliability of the action of the reversing valve can be effectively guaranteed.
Meanwhile, the reversing valve body structure enables the valve core movement mechanism to stably act in a high pressure difference environment, improves the reliability and the service life of a system, and improves the quality of a final product.
In the valve body structure of the 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 is in a non-sliding state, each shoulder seals two working oil ports 4 respectively.
The arrangement of the shoulder ensures that the working oil port is not communicated with the oil return port in a closed state.
In the valve body structure of the reversing valve in this embodiment, the two ends of the housing 1 are respectively provided with the oil return cavities 6, and the two oil return cavities 6 are respectively connected with the oil return port 5.
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 valve body structure of the reversing valve of the embodiment, two ends of each sliding hole are respectively provided with one radial sealing surface, and each radial sealing surface is provided with an annular oil groove 50. Different annular oil grooves 50 on each radial seal face are used to isolate the high pressure port and the working port, respectively.
In the valve body structure of the reversing valve of the embodiment, each annular oil groove 50 is communicated with an oil return branch 51, and an oil return process hole 52 is formed between two adjacent oil return branches 51;
the oil return branch 51 is connected with the oil return port 5 through the oil return process hole 52.
Generally, the diameter of the opening of the annular oil groove 50 is the smallest, the diameter of the oil return branch 51 is slightly larger, and the diameter of the oil return process hole 52 is larger than that of the oil return branch 51.
In the valve body structure of the reversing valve of this embodiment, electromagnets are respectively disposed on two sides of the housing 1, and two ends of each of the electromagnets are respectively in contact with two ends of the valve core 2.
Furthermore, 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;
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.
Meanwhile, the reversing valve body structure of the reversing valve enables the reversing valve to additionally discharge the permeated high-pressure oil in the working process, improves the reliability and the service life of a system, and improves the quality of a final product.
In addition, the reversing valve body structure of the reversing valve has the advantages of low manufacturing cost, compact structural design, ingenious structure, stable starting and stopping, convenient use and maintenance and suitability for implementation of reversing actions of various hydraulic systems.
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 (7)
1. A reversing valve body structure, comprising: a housing and a valve cartridge; a high-pressure oil port, an oil return port and two different working oil ports are arranged in the shell;
the shell is provided with two sliding holes, and the valve core is sleeved in the two sliding holes; the valve core slides leftwards or rightwards, and the sliding hole on one side is opened, so that the high-pressure oil port is communicated with one of the working oil ports;
the surface of the slide hole, which is in contact with the valve core, is a radial sealing surface; and an annular oil groove is arranged on the radial sealing surface and communicated with the oil return port.
2. The reversing valve body structure according to claim 1, wherein a portion of the spool that contacts the radial seal surface is a shoulder;
and when the valve core is in a non-sliding state, each shoulder seals the two working oil ports respectively.
3. The reversing valve body structure according to claim 1, wherein the two ends of the housing are respectively provided with oil return cavities, and the two oil return cavities are respectively connected with the oil return ports.
4. The reversing valve body structure according to claim 2, wherein one of the radial seal surfaces is provided at each of both ends of each of the slide holes, and an annular oil groove is provided on each of the radial seal surfaces.
5. The reversing valve body structure according to claim 4, wherein each annular oil groove is communicated with an oil return branch, and an oil return process hole is formed between every two adjacent oil return branches;
the oil return branch is connected with the oil return port through the oil return process hole.
6. The structure of the reversing valve body according to any one of claims 1 to 3, wherein electromagnets are respectively disposed on both sides of the housing, and both ends of the two electromagnets are respectively in contact with both ends of the valve core.
7. The reversing valve body structure according to claim 6, wherein 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011508228.3A CN112555218B (en) | 2020-12-18 | 2020-12-18 | Valve body structure of reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011508228.3A CN112555218B (en) | 2020-12-18 | 2020-12-18 | Valve body structure of reversing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112555218A true CN112555218A (en) | 2021-03-26 |
| CN112555218B CN112555218B (en) | 2024-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011508228.3A Active CN112555218B (en) | 2020-12-18 | 2020-12-18 | Valve body structure of reversing valve |
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| CN (1) | CN112555218B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321439A (en) * | 2021-12-29 | 2022-04-12 | 湖北三江航天红峰控制有限公司 | Automatic reversing valve |
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| CN112555218B (en) | 2024-05-17 |
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