CN112555218B - Valve body structure of reversing valve - Google Patents
Valve body structure of reversing valve Download PDFInfo
- Publication number
- CN112555218B CN112555218B CN202011508228.3A CN202011508228A CN112555218B CN 112555218 B CN112555218 B CN 112555218B CN 202011508228 A CN202011508228 A CN 202011508228A CN 112555218 B CN112555218 B CN 112555218B
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- Prior art keywords
- oil
- valve core
- port
- oil return
- body structure
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- 238000007789 sealing Methods 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 15
- 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 98
- 239000010720 hydraulic oil Substances 0.000 description 9
- 239000012467 final product Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- Multiple-Way Valves (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention provides a reversing valve body structure, 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, an oil return port and two different working oil ports; the valve core is sleeved in the two sliding holes; the valve core slides leftwards or rightwards, and one side of the sliding hole is opened, so that the high-pressure oil port is communicated with one of the working oil ports; the surface of the sliding hole, which is contacted with the valve core, is a radial sealing surface; the radial sealing surface is provided with an annular oil groove which is communicated with the oil return opening. 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, the high-pressure oil preferentially enters the annular oil groove after penetrating axially outwards through the valve core, so that the failure of an executing element caused by leakage of the high-pressure oil to the bevel port of the non-working oil port is avoided, and the stability and reliability of the action of the reversing valve can be effectively ensured.
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 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 structure, a valve core of the common reversing valve slides in a valve body, and different oil ports are communicated or closed by reversing through a switching valve core; because the case is sliding fit with the valve body for the hydraulic oil of high pressure oil mouth side can leak to low pressure oil mouth side through the clearance of sliding surface, if actuating element has been connected to low pressure oil mouth side, along with the hydraulic oil of seepage constantly accumulates, can change actuating element's current position, just can not be suitable for the occasion that has strict position requirement to actuating element.
Therefore, there is a need in the art for a diverter valve that prevents high pressure oil from penetrating into the low pressure area.
Disclosure of Invention
The invention provides a novel reversing valve body structure, which solves the technical problem that in the prior art, the reversing valve is abnormal in action of an executive component due to the fact that high-pressure oil permeates into a non-working port by leading high-pressure oil out of an annular oil groove preferentially.
The reversing valve body structure of the embodiment of the invention comprises: a housing and a valve core; the shell is internally provided with a high-pressure oil port, an oil return port and two different working oil ports;
the valve core is sleeved in the two sliding holes; the valve core slides leftwards or rightwards, and one side of the sliding hole is opened, so that the high-pressure oil port is communicated with one of the working oil ports;
The surface of the sliding hole, which is contacted with the valve core, is a radial sealing surface; the radial sealing surface is provided with an annular oil groove which is communicated with the oil return opening.
The reversing valve body structure comprises a valve core, wherein the part, which is contacted with the radial sealing surface, of the valve core is a shoulder;
And when the valve core is in a non-sliding state, each shoulder seals two working oil ports respectively.
The reversing valve body structure 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 oil return opening.
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.
According to the reversing valve body structure, each annular oil groove is communicated with an oil return branch, and an oil return process hole is formed between 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 electromagnets are respectively arranged on two sides of the shell, and two ends of the electromagnets are respectively contacted with two ends of the valve core.
The reversing valve body structure is characterized in that the electromagnets are provided with the 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.
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, the high-pressure oil preferentially enters the annular oil groove after penetrating axially outwards through the valve core, so that the failure of an executing element caused by leakage of the high-pressure oil to the bevel port of the non-working oil port is avoided, and the stability and reliability of the action of the reversing valve can be effectively ensured.
Meanwhile, the reversing valve body structure ensures that the valve core movement mechanism can stably act in a high pressure difference environment, thereby improving the reliability and the service life of the system and improving the quality of the final product.
Drawings
FIG. 1 is a schematic cross-sectional view of a reversing valve body structure according to an embodiment of the present invention;
Fig. 2 is a schematic cross-sectional view of the right direction-changing state of fig. 1;
Fig. 3 is an enlarged schematic view of a portion of fig. 1.
Detailed Description
The reversing valve body structure of the invention 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 reversing valve body structure according to an embodiment of the present invention; FIG. 2 is a schematic view of a sectional structure in a rightward reversing state;
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 a hydraulic system for releasing high-pressure hydraulic oil through the high-pressure oil pipe P.
The two working oil ports 4 are respectively connected with two ends of the executing element so as to execute 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 discharging low pressure oil to the tank on the non-working side of the actuator.
Two sliding holes are formed in the shell 1, and the valve core 2 is sleeved in the two sliding holes; the valve core 2 slides leftwards or rightwards, and one side of the sliding hole is opened, so that the high-pressure oil port 3 is communicated with one of the working oil ports 4; thus, the high-pressure oil can lead to the working oil port, and the reversing action is further executed.
As shown in fig. 3, the surface of the sliding 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 port 5.
In the invention, a valve core 2 is arranged in an axial through hole of a 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 no external force such as electromagnetic force, hydraulic pressure and the like acts on the two ends of the valve core, the valve core is in a neutral position under the action of springs 8 on the two sides, and at the moment, the high-pressure oil port is not communicated; when the high-pressure oil port is connected with a high-pressure oil source, the valve core is in sliding fit with the reversing valve body, so that a small axial gap exists between 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 valve body structure of the reversing valve is specially designed, a small amount of hydraulic oil can leak into the annular oil groove 50 of the valve body of the reversing valve through the axial clearance, and the hydraulic oil in the annular oil groove 50 flows out of the relevant oil way and flows into the oil tank through the oil return port 5; 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 valve is very suitable for occasions with strict requirements on the stay 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, the high-pressure oil preferentially enters the annular oil groove after penetrating axially outwards through the valve core, so that the failure of an executing element caused by leakage of the high-pressure oil to the bevel port of the non-working oil port is avoided, and the stability and reliability of the action of the reversing valve can be effectively ensured.
Meanwhile, the reversing valve body structure ensures that the valve core movement mechanism can stably act in a high pressure difference environment, thereby improving the reliability and the service life of the system and improving the quality of the final product.
The valve body structure of the 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 the two working oil ports 4 respectively when the valve core is in a non-sliding state.
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 reversing valve body structure of this embodiment, two ends of the housing 1 are respectively provided with an oil return cavity 6, and 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 reversing valve body structure 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. A different annular oil groove 50 on each radial seal face is used to isolate the high pressure oil port from the working oil port, respectively.
In the reversing valve body structure of the embodiment, further, 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.
Typically, 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 the diameter of the oil return branch 51.
In the reversing valve body structure of the embodiment, 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.
Further, driving rods 9 are arranged on the electromagnets, 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.
Meanwhile, the valve body structure of the reversing valve can additionally discharge permeated high-pressure oil in the working process of the reversing valve, so that the reliability and the working life of the system are improved, and the quality of a final product is improved.
In addition, the reversing valve body structure has low manufacturing cost, compact structural design, ingenious structure, stable starting and stopping, convenient use and maintenance and suitability for the implementation of reversing actions of various 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 (5)
1. A reversing valve body structure, comprising: a housing and a valve core; the shell is internally provided with a high-pressure oil port, an oil return port and two different working oil ports;
the valve core is sleeved in the two sliding holes; the valve core slides leftwards or rightwards, and one side of the sliding hole is opened, so that the high-pressure oil port is communicated with one of the working oil ports;
The surface of the sliding hole, which is contacted with the valve core, is a radial sealing surface; an annular oil groove is arranged on the radial sealing surface and is communicated with the oil return port;
the part of the valve core, which is contacted with the radial sealing surface, is a shoulder;
each shoulder seals two working oil ports respectively when the valve core is in a non-sliding state;
The 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 opening.
2. The reversing valve body structure according to claim 1, wherein 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.
3. The reversing valve body structure according to claim 2, wherein each annular oil groove is communicated with an oil return branch, and an oil return process hole is formed between two adjacent oil return branches;
The oil return branch is connected with the oil return port through the oil return process hole.
4. The reversing valve body structure according to claim 1, wherein two sides of the housing are respectively provided with electromagnets, and two ends of the electromagnets are respectively contacted with two ends of the valve core.
5. The reversing valve body structure according to claim 4, 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 further 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 CN112555218A (en) | 2021-03-26 |
| CN112555218B true 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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| Country | Link |
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| CN (1) | CN112555218B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321439B (en) * | 2021-12-29 | 2023-10-03 | 湖北三江航天红峰控制有限公司 | Automatic reversing valve |
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| CN112555218A (en) | 2021-03-26 |
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