CN110985471A - Safe air-proof hole integrated sliding valve - Google Patents
Safe air-proof hole integrated sliding valve Download PDFInfo
- Publication number
- CN110985471A CN110985471A CN201911361245.6A CN201911361245A CN110985471A CN 110985471 A CN110985471 A CN 110985471A CN 201911361245 A CN201911361245 A CN 201911361245A CN 110985471 A CN110985471 A CN 110985471A
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- Prior art keywords
- valve
- cavitation
- safety
- spring
- safety valve
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Classifications
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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
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
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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
- F15B13/025—Pressure reducing valves
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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
- F15B13/026—Pressure compensating valves
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Safety Valves (AREA)
Abstract
The invention belongs to the field of hydraulic engineering, and relates to a safe air-pocket-proof integrated slide valve which comprises a safety valve component and an air-pocket-proof valve component; the safety valve assembly comprises a safety valve screw cap (1), a safety valve spring seat (2), a steel ball (3) and a safety valve spring (13); the steel ball (3) is arranged in the safety valve spring seat (2), one end of a safety valve spring (13) is propped against the safety valve spring seat (2), the other end of the safety valve spring (13) is propped against the inside of the safety valve screw cap (1), and the steel ball (3) is arranged at the left end of the anti-cavitation valve sleeve (4); the anti-cavitation valve component comprises an anti-cavitation valve sleeve (4), a spring (5), a valve (6) and an anti-cavitation valve seat (7); the spring (5) and the valve (6) are sequentially arranged at the right end of the anti-cavitation valve sleeve (4), and the anti-cavitation valve seat (7) is connected with the anti-cavitation valve sleeve (4). The invention ensures the service life and the function realization of the integrated valve in the using process.
Description
Technical Field
The invention belongs to the field of hydraulic engineering, and relates to a safe air-pocket-proof integrated slide valve structure.
Background
The safety valve mainly has two major structures, namely a spring type and a lever type.
The spring type is that the sealing between the valve clack and the valve seat is close to the acting force of the spring, and the valve clack has the advantages of light and compact structure, high sensitivity, no limit on the installation position, heavy structure and easy vibration of a loading structure.
The lever type is realized by acting force of a lever and a heavy hammer, has simple structure, is easy and accurate to adjust, and has the defect that the applied load can change along with the opening of the valve.
The anti-cavitation valve is used for preventing cavitation caused by pressure reduction of the oil inlet cavity.
The general design at present is to design relief valve and anti-cavitation valve separately, when needing two kinds of valves in the product simultaneously, designs respectively and can increase structural complexity and structural weight, influences product maintainability etc..
Disclosure of Invention
The purpose of the invention is as follows:
the invention provides a safe air-pocket-proof integrated slide valve, which ensures the service life and function realization of an integrated valve in the use process.
The technical scheme adopted by the invention is as follows:
a safe anti-cavitation integrated slide valve comprises a safe valve component and an anti-cavitation valve component;
the safety valve assembly comprises a safety valve screw cap 1, a safety valve spring seat 2, a steel ball 3 and a safety valve spring 13; the steel ball 3 is arranged in the safety valve spring seat 2, one end of a safety valve spring 13 is propped against the safety valve spring seat 2, the other end of the safety valve spring 13 is propped against the inside of the safety valve screw cap 1, and the steel ball 3 is arranged at the left end of the anti-cavitation valve sleeve 4;
the anti-cavitation valve component comprises an anti-cavitation valve sleeve 4, a spring 5, a valve 6 and an anti-cavitation valve seat 7; and a spring 5 and a valve 6 are sequentially arranged at the right end of the anti-cavitation valve sleeve 4, and the anti-cavitation valve seat 7 is connected with the anti-cavitation valve sleeve 4.
The section of the safety valve spring seat 2 is T-shaped, a hemispherical groove is formed in the center of one surface of the safety valve spring seat 2, which is opposite to the steel ball 3, and the steel ball 3 is clamped in the hemispherical groove; one end of the safety valve spring 13 is pressed against the other surface of the safety valve spring seat 2.
An adjusting gasket 14 is arranged between the safety valve spring 13 and the safety valve screw cap 1.
The end face of the right side of the safety valve screw cap 1 is provided with a cross groove for leading the oil 1.
The right end face of the anti-cavitation valve seat 7 is provided with a cross groove for leading the oil 2.
Two annular grooves are carved on the outer peripheral surface of the safety valve screw cap 1, and a safety valve right sealing ring 10 and a safety valve left sealing ring 11 are respectively arranged.
And a safety valve left protection ring 12 is arranged between the safety valve right sealing ring 10, the safety valve left sealing ring 11 and the annular groove.
Annular grooves are carved on the outer peripheral surfaces of the anti-cavitation valve sleeve 4 and the anti-cavitation valve seat 7, and anti-cavitation valve sealing rings 8 are respectively arranged.
And a safety valve right protection ring 9 is arranged between the anti-cavitation valve sealing ring 8 and the annular groove.
In order to prevent the overpressure phenomenon of a load oil path, when the load oil pressure exceeds a high-pressure limit value, high-pressure oil in a cavity where a spring 5 is located pushes a steel ball 3 leftwards, so that a safety valve spring seat 2 compresses a safety valve spring 13 to move leftwards, the load oil path is communicated with an oil return 1, and the unloading pressure is realized;
in order to prevent cavitation of a load oil path, when the resultant force of the load oil pressure and the spring force of the spring 5 is smaller than the pressure of the return oil 2, the acting force of the return oil pressure on the right side of the valve seat 7 of the cavitation prevention valve on the end face of the valve 6 pushes the valve 6 to compress the spring 5, so that the load oil path is communicated with the return oil 2, the pressure of the load oil path is supplemented, and when the resultant force of the load oil pressure and the spring force of the spring 5 and the pressure of the return oil 2 reach balance, the valve 6 moves rightwards to block the communication oil path between the return oil 2 and the load under the spring force of the compression.
The invention has the beneficial effects that:
the invention provides a safe air pocket-proof integrated slide valve, which integrates functions and structures of a typical safety valve and an air pocket-proof valve, has the functions of pressure relief and air pocket prevention, and ensures the service life and the function realization of the integrated valve in the using process by reasonably selecting a spring and reliably connecting a steel ball and a valve.
In the invention, an appropriate spring is selected according to the required opening pressure of the safety valve and the anti-cavitation valve during design, and the pre-compression amount of the spring is calculated. When the steel ball compresses the spring leftwards, redundant pressure is relieved, and overpressure of a load oil way is prevented; when the valve compresses the spring leftwards, the oil return is communicated with the load oil path to prevent the load oil path from generating cavitation, and after the pressure is balanced, the spring pushes the valve to move to block the communication oil path and stop oil supplement.
Drawings
FIG. 1: an integrated slide valve structure diagram of a safety anti-cavitation valve.
The safety valve comprises a safety valve screw cap 1, a safety valve spring seat 2, a steel ball 3, an air pocket prevention valve sleeve 4, a spring 5, a valve 6, an air pocket prevention valve seat 7, an air pocket prevention valve sealing ring 8, a safety valve right protection ring 9, a safety valve right sealing ring 10, a safety valve left sealing ring 11, a safety valve left protection ring 12, a safety valve spring 13 and an adjusting gasket 14.
Detailed Description
The invention is described in further detail below with reference to the drawings.
As shown in fig. 1, a safety anti-cavitation integrated spool valve includes a safety valve assembly and an anti-cavitation valve assembly;
the safety valve assembly comprises a safety valve screw cap 1, a safety valve spring seat 2, a steel ball 3 and a safety valve spring 13; the steel ball 3 is arranged in the safety valve spring seat 2, one end of a safety valve spring 13 is propped against the safety valve spring seat 2, the other end of the safety valve spring 13 is propped against the inside of the safety valve screw cap 1, and the steel ball 3 is arranged at the left end of the anti-cavitation valve sleeve 4;
the anti-cavitation valve component comprises an anti-cavitation valve sleeve 4, a spring 5, a valve 6 and an anti-cavitation valve seat 7; and a spring 5 and a valve 6 are sequentially arranged at the right end of the anti-cavitation valve sleeve 4, and the anti-cavitation valve seat 7 is connected with the anti-cavitation valve sleeve 4.
The section of the safety valve spring seat 2 is T-shaped, a hemispherical groove is formed in the center of one surface of the safety valve spring seat 2, which is opposite to the steel ball 3, and the steel ball 3 is clamped in the hemispherical groove; one end of the safety valve spring 13 is pressed against the other surface of the safety valve spring seat 2.
An adjusting gasket 14 is arranged between the safety valve spring 13 and the safety valve screw cap 1.
The end face of the right side of the safety valve screw cap 1 is provided with a cross groove for leading the oil 1.
The right end face of the anti-cavitation valve seat 7 is provided with a cross groove for leading the oil 2.
The cross grooves are formed in the end faces, so that the contact area of the end faces can be large, and the uniform pressure distribution of oil entering the cavity can be guaranteed.
Two annular grooves are carved on the outer peripheral surface of the safety valve screw cap 1, and a safety valve right sealing ring 10 and a safety valve left sealing ring 11 are respectively arranged.
And a safety valve left protection ring 12 is arranged between the safety valve right sealing ring 10, the safety valve left sealing ring 11 and the annular groove.
Annular grooves are carved on the outer peripheral surfaces of the anti-cavitation valve sleeve 4 and the anti-cavitation valve seat 7, and anti-cavitation valve sealing rings 8 are respectively arranged.
And a safety valve right protection ring 9 is arranged between the anti-cavitation valve sealing ring 8 and the annular groove.
The safety anti-cavitation valve is matched with an external shell to be sealed and protected through an anti-cavitation valve sealing ring 8, a safety valve right protection ring 9, a safety valve right sealing ring 10, a safety valve left sealing ring 11 and a safety valve left protection ring 12.
The working principle is as follows:
in order to prevent the phenomenon of overpressure in the load oil path, when the load oil pressure exceeds a high-pressure limit value, the high-pressure oil in the cavity where the spring 5 is located pushes the steel ball 3 leftwards, so that the safety valve spring seat 2 compresses the safety valve spring 13 to move leftwards, the load oil path is communicated with the oil return 1, the unloading pressure is realized, when the load oil pressure is reduced to be below the high-pressure limit value, the safety valve spring seat 2 pushes the steel ball 3 rightwards under the spring force action of the safety valve spring 13, the right oil hole of the safety valve spring is sealed, the oil return 1 is blocked from the load.
In order to prevent cavitation of a load oil path, when the resultant force of the load oil pressure and the spring force of the spring 5 is smaller than the pressure of the return oil 2, the acting force of the return oil pressure on the right side of the valve seat 7 of the cavitation prevention valve on the end face of the valve 6 pushes the valve 6 to compress the spring 5, so that the load oil path is communicated with the return oil 2, the pressure of the load oil path is supplemented, and when the resultant force of the load oil pressure and the spring force of the spring 5 and the pressure of the return oil 2 reach balance, the valve 6 moves rightwards to block the communication oil path between the return oil 2 and the load under the spring force of the compression.
Wherein the compression force of the spring 5 is calculated from the system required anti-cavitation valve opening pressure, and the compression force of the relief valve spring 13 is calculated from the required load oil pressure. And calculating the stroke of the steel ball 3 according to the required load oil pressure and the oil return pressure difference range.
Claims (10)
1. A safe anti-cavitation integrated slide valve is characterized by comprising a safe valve component and an anti-cavitation valve component;
the safety valve assembly comprises a safety valve screw cap (1), a safety valve spring seat (2), a steel ball (3) and a safety valve spring (13); the steel ball (3) is arranged in the safety valve spring seat (2), one end of a safety valve spring (13) is propped against the safety valve spring seat (2), the other end of the safety valve spring (13) is propped against the inside of the safety valve screw cap (1), and the steel ball (3) is arranged at the left end of the anti-cavitation valve sleeve (4);
the anti-cavitation valve component comprises an anti-cavitation valve sleeve (4), a spring (5), a valve (6) and an anti-cavitation valve seat (7); the spring (5) and the valve (6) are sequentially arranged at the right end of the anti-cavitation valve sleeve (4), and the anti-cavitation valve seat (7) is connected with the anti-cavitation valve sleeve (4).
2. The safety anti-cavitation integrated sliding valve according to claim 1, characterized in that the section of the safety valve spring seat (2) is T-shaped, a hemispherical groove is arranged at the center part of one surface of the safety valve spring seat (2) corresponding to the steel ball (3), and the steel ball (3) is clamped in the hemispherical groove; one end of the safety valve spring (13) is pressed against the other surface of the safety valve spring seat (2).
3. A safety anti-cavitation integrated slide valve according to claim 1, characterised in that a shim (14) is provided between the safety valve spring (13) and the safety valve cap (1).
4. A safety cavitation prevention integrated slide valve according to claim 1, characterized in that the right side end face of the safety valve screw cap (1) is provided with a cross-shaped groove for passing the oil 1.
5. A safety cavitation prevention integrated slide valve in accordance with claim 1, characterized by that the right side end face of the cavitation prevention valve seat (7) is provided with a cross-shaped groove for passing back the oil 2.
6. A safety cavitation prevention integrated slide valve as recited in claim 1,
two annular grooves are carved on the outer peripheral surface of the safety valve screw cap (1), and a safety valve right sealing ring (10) and a safety valve left sealing ring (11) are respectively arranged.
7. A safety cavitation prevention integrated slide valve as recited in claim 1,
and a safety valve left protection ring (12) is arranged between the safety valve right sealing ring (10), the safety valve left sealing ring (11) and the annular groove.
8. A safety cavitation prevention integrated slide valve as recited in claim 1,
annular grooves are carved on the outer peripheral surfaces of the anti-cavitation valve sleeve (4) and the anti-cavitation valve seat (7), and anti-cavitation valve sealing rings (8) are respectively arranged.
9. A safety cavitation prevention integrated slide valve as recited in claim 1,
a safety valve right protection ring (9) is arranged between the anti-cavitation valve sealing ring (8) and the annular groove.
10. The integrated sliding valve of a safety anti-cavitation valve according to claim 1, characterized in that, in order to prevent the overpressure phenomenon of the load oil path, when the load oil pressure exceeds the high pressure limit value, the high pressure oil in the cavity where the spring (5) is located pushes the steel ball (3) leftwards, so that the safety valve spring seat (2) compresses the safety valve spring (13) to move leftwards, the load oil path is communicated with the return oil 1 for unloading pressure, when the load oil pressure is reduced below the high pressure limit value, under the spring force of the safety valve spring (13), the safety valve spring seat (2) pushes the steel ball (3) rightwards to seal the oil hole at the right side, the return oil 1 is blocked from the load oil path, and the load oil path pressure is maintained;
in order to prevent cavitation of a load oil path, when the combined force of the load oil pressure and the spring force of a spring (5) is smaller than the pressure of an oil return path 2, the acting force of the oil return pressure on the right side of a valve seat (7) of the anti-cavitation valve on the end face of a valve (6) pushes the valve (6) to compress the spring (5), so that the load oil path is communicated with the oil return path 2, the pressure of the load oil path is supplemented, when the combined force of the load oil pressure and the spring force of the spring (5) and the pressure of the oil return path 2 reach balance, the valve (6) moves rightwards to block the oil return path communicated with the load under the action of the spring force of the.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911361245.6A CN110985471A (en) | 2019-12-25 | 2019-12-25 | Safe air-proof hole integrated sliding valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911361245.6A CN110985471A (en) | 2019-12-25 | 2019-12-25 | Safe air-proof hole integrated sliding valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110985471A true CN110985471A (en) | 2020-04-10 |
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ID=70076966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911361245.6A Pending CN110985471A (en) | 2019-12-25 | 2019-12-25 | Safe air-proof hole integrated sliding valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110985471A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202683625U (en) * | 2012-06-28 | 2013-01-23 | 启东市南方润滑液压设备有限公司 | Core rod rotating hydraulic system |
| CN203627369U (en) * | 2013-11-20 | 2014-06-04 | 江苏恒立液压有限公司 | Pressure compensation valve |
| CN203717502U (en) * | 2013-12-15 | 2014-07-16 | 陕西同力重工股份有限公司 | Lifting system balance valve for mining dump truck |
| CN105065359A (en) * | 2015-08-13 | 2015-11-18 | 山东常林机械集团股份有限公司 | Safety oil supplementing valve for multi-path valve |
| CN206904319U (en) * | 2017-06-28 | 2018-01-19 | 中车青岛四方车辆研究所有限公司 | A kind of differential valve and the pressure control device used for rail vehicle containing the differential valve |
| CN208417115U (en) * | 2018-06-12 | 2019-01-22 | 裕泰液压技术(上海)有限公司 | A kind of fluid pressure type automatic adjusting balance valve group |
| CN208935056U (en) * | 2018-11-01 | 2019-06-04 | 淮安市胜杰液压机械有限公司 | A kind of Direct Action Type anti-cavitation overflow valve |
| CN110131477A (en) * | 2019-05-29 | 2019-08-16 | 河南航天液压气动技术有限公司 | A kind of multi-level throttle labyrinth decompression valve |
-
2019
- 2019-12-25 CN CN201911361245.6A patent/CN110985471A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202683625U (en) * | 2012-06-28 | 2013-01-23 | 启东市南方润滑液压设备有限公司 | Core rod rotating hydraulic system |
| CN203627369U (en) * | 2013-11-20 | 2014-06-04 | 江苏恒立液压有限公司 | Pressure compensation valve |
| CN203717502U (en) * | 2013-12-15 | 2014-07-16 | 陕西同力重工股份有限公司 | Lifting system balance valve for mining dump truck |
| CN105065359A (en) * | 2015-08-13 | 2015-11-18 | 山东常林机械集团股份有限公司 | Safety oil supplementing valve for multi-path valve |
| CN206904319U (en) * | 2017-06-28 | 2018-01-19 | 中车青岛四方车辆研究所有限公司 | A kind of differential valve and the pressure control device used for rail vehicle containing the differential valve |
| CN208417115U (en) * | 2018-06-12 | 2019-01-22 | 裕泰液压技术(上海)有限公司 | A kind of fluid pressure type automatic adjusting balance valve group |
| CN208935056U (en) * | 2018-11-01 | 2019-06-04 | 淮安市胜杰液压机械有限公司 | A kind of Direct Action Type anti-cavitation overflow valve |
| CN110131477A (en) * | 2019-05-29 | 2019-08-16 | 河南航天液压气动技术有限公司 | A kind of multi-level throttle labyrinth decompression valve |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200410 |