CN110821907B - Mechanical throttling speed regulating valve with adjustable damping hole - Google Patents
Mechanical throttling speed regulating valve with adjustable damping hole Download PDFInfo
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- CN110821907B CN110821907B CN201911068596.8A CN201911068596A CN110821907B CN 110821907 B CN110821907 B CN 110821907B CN 201911068596 A CN201911068596 A CN 201911068596A CN 110821907 B CN110821907 B CN 110821907B
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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
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Abstract
The invention relates to a mechanical throttling speed regulating valve with an adjustable damping hole, and belongs to the technical field of hydraulic system control. The invention designs a mechanical throttling speed regulating valve with an adjustable damping hole, which can be used for throttling and decelerating the tail end of the stroke of a hydraulic actuating element, has accurate pressure control, can realize the rapid pressure establishment and rapid deceleration of a hydraulic system, and can accurately adjust the tail end speed of the hydraulic actuating element. The throttle speed regulating device can be used for throttling and regulating the speed of hydraulic actuating elements such as a hydraulic oil cylinder and the like. The invention has the advantages of compact structure, high control precision, easy realization, strong operability, safety, stability and the like.
Description
Technical Field
The invention belongs to the technical field of hydraulic system control, and particularly relates to a mechanical throttling speed regulating valve with an adjustable damping hole.
Background
In a hydraulic system, in order to meet the requirements of quick speed response and pressure change of a hydraulic actuator in different stroke states, the flow and the pressure need to be adjusted in real time simultaneously in the movement process of the hydraulic actuator. For example, when a hydraulic actuator hydraulic cylinder rotates and extends around a rotating shaft rapidly, particularly under high load, and when the hydraulic system does not timely and effectively establish corresponding pressure requirements during rapid conversion from high speed to low speed movement, the load speed is out of control, and serious accidents are caused. The response time of the common throttle speed regulating valve with electro-hydraulic proportional control often exceeds the requirement of quick pressure build of a high-load hydraulic cylinder due to the influence of signal conversion and time delay; on the other hand, the electro-hydraulic proportional throttle valve has higher requirements on the cleanliness and the oil of hydraulic oil, and a high-precision filter is needed to ensure the normal work of the hydraulic oil. The mechanical stroke throttle valve combines the movement of a mechanical structure with the flow area of the throttle valve, so that the speed of a hydraulic actuating element is combined with the movement structure, and the hydraulic actuating element is enabled to respond quickly.
Disclosure of Invention
Technical problem to be solved
The technical problem to be solved by the invention is as follows: the problem that a system cannot quickly build pressure in the process of quickly closing a valve core, so that a hydraulic actuator stalls when moving from a high speed to a low speed or a system is blocked to cause damage to a hydraulic element is solved.
(II) technical scheme
In order to solve the technical problem, the invention provides a mechanical throttling speed regulating valve capable of regulating a damping hole, which comprises: the valve comprises a roller 1, a valve core 2, an elastic retainer ring 3, a sealing ring 4, a guide belt 5, a valve body 6, a return spring 9, a nut 10 and a plug-in one-way valve; wherein, the valve body 6 is provided with a plunger cavity required by the sliding of the valve core 2, the valve body 6 is provided with a positive oil cavity 7 and a negative oil cavity 8 which are communicated with each other through the flow area of the valve core 2, the joint of oil ports of the positive oil cavity 7 and the negative oil cavity 8 and the plunger cavity in the valve body 6 is provided with a cutting groove, the upper part of the valve body 6 is provided with a mounting hole 14 for mounting a plug-in type check valve, the plug-in type check valve is connected with the valve body 6 through threads, so that under the condition that the valve core 2 is closed, oil enters the plug-in type check valve from the negative oil cavity 8 and flows into the positive oil cavity 7, the plunger cavity of the valve body 6 is provided with an elastic retainer ring 3 for holes, the bottom of the valve core 2 is provided with a spring mounting groove, a spring cavity is arranged below the valve core 2 in the valve body 6, a return spring 9 is arranged in a space enclosed by the spring mounting groove of the valve core 2 and the spring cavity of the valve body 6, when the valve core 2 slides upwards under the action of the return spring 9, the elastic retainer ring 3 for the hole limits the valve core 2; the top end of the valve core 2 is provided with a roller 1, and a cylindrical surface of the valve core 2, which slides relative to the valve body 6, is provided with a guide belt 5 and a sealing ring 4; the upper part of the nut 10 is provided with an adjustable damping hole 12 which is communicated with the positive oil cavity 7 and the reverse oil cavity 8.
Preferably, the sealing ring 4 is a reciprocating sealing ring.
Preferably, an oil drainage hole is formed between the spring cavity of the valve body 6 and the oil return cavity 8, so that the oil drainage hole is communicated with the oil return cavity 8.
Preferably, the lower part of the nut 10 is provided with an O-shaped ring installation groove, and the nut 10 and the valve body 6 are sealed through an O-shaped ring 11.
Preferably, the adjustable damping holes 12 are threaded holes.
The invention also provides an application of the mechanical throttling and speed regulating valve in a hydraulic system, which comprises the following steps: the roller 1 at the top end of the valve core 2 is associated with a mechanical motion mechanism, and the valve core 2 is pushed to move downwards by the contact of the mechanical motion mechanism and the roller 1, so that the oil flow area is reduced, and finally, the hydraulic execution element is decelerated.
Preferably, the application comprises in particular the following steps:
in the initial stage, an actuating element of a hydraulic system moves, a roller 1 is not contacted with a mechanical movement mechanism on the hydraulic actuating element, a valve core 2 is in a full-open state under the action of a return spring 9, the hydraulic actuating element moves rapidly, when the hydraulic actuating element moves to the tail end of a stroke, the mechanical movement mechanism is contacted with the roller 1, so that the valve core 2 is pushed to move downwards relative to a valve body 6, the overflowing area between the valve core 2 and the valve body 6 is gradually reduced, and the deceleration effect is achieved; when the flow area of the valve core 2 and the valve body 6 is completely reduced to 0, oil in the positive oil cavity 7 enters the reverse oil cavity 8 through the adjustable damping hole 12, and in the process of rapidly closing the valve core 2, the oil can enter the reverse oil cavity 8 from the positive oil cavity 7 through the adjustable damping hole 12.
Preferably, the application further comprises the steps of: when the hydraulic execution element moves in a reverse stroke, oil enters the valve body 6 from the reverse oil cavity 8, the plug-in type one-way valve is opened under the action of oil pressure of the reverse oil cavity 8, the oil in the reverse oil cavity 8 quickly flows back to the positive oil cavity 7, the hydraulic execution element moves in a reverse stroke quickly, the mechanical movement mechanism is separated from the roller 1 in the reverse stroke movement process of the hydraulic execution element, the valve core 2 slides upwards under the action of the return spring 9, and the elastic check ring 3 for a hole limits the valve core 2.
Preferably, the adjustable orifice 12 controls the speed of the end stroke of the hydraulic actuator by switching between different orifice sizes.
(III) advantageous effects
The invention designs a mechanical throttling speed regulating valve with an adjustable damping hole, which can be used for throttling and decelerating the tail end of the stroke of a hydraulic actuating element, has accurate pressure control, can realize the rapid pressure establishment and rapid deceleration of a hydraulic system, and can accurately adjust the tail end speed of the hydraulic actuating element. The throttle speed regulating device can be used for throttling and regulating the speed of hydraulic actuating elements such as a hydraulic oil cylinder and the like. The invention has the advantages of compact structure, high control precision, easy realization, strong operability, safety, stability and the like.
Drawings
FIG. 1 is a cross-sectional view of a mechanical throttle speed regulating valve with an adjustable damping hole provided by the invention.
Wherein: 1. the hydraulic control valve comprises a roller 2, a valve core 3, an elastic retainer ring 4, a sealing ring 5, a guide belt 6, a valve body 7, a positive oil cavity 8, a negative oil cavity 9, a return spring 10, a nut 11, an O-shaped ring 12, an adjustable damping hole 13, an oil duct 14 and a plug-in one-way valve mounting hole.
Detailed Description
In order to make the objects, contents, and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.
As shown in fig. 1, the invention provides a mechanical throttle speed regulating valve with an adjustable damping hole, comprising: the valve comprises a roller 1, a valve core 2, an elastic retainer ring 3, a sealing ring 4, a guide belt 5, a valve body 6, a return spring 9, a screw cap 10, an O-shaped ring 11 and a plug-in type one-way valve; wherein, the valve body 6 is provided with a plunger cavity required by the sliding of the valve core 2, the valve body 6 is provided with a positive oil cavity 7 and a negative oil cavity 8 which are communicated with each other through the flow area of the valve core 2, the joint of oil ports of the positive oil cavity 7 and the negative oil cavity 8 and the plunger cavity in the valve body 6 is provided with a cutting groove, the upper part of the valve body 6 is provided with a mounting hole 14 for mounting a plug-in type check valve, the plug-in type check valve is connected with the valve body 6 through threads, so that under the condition that the valve core 2 is closed, oil enters the plug-in type check valve from the negative oil cavity 8 and flows into the positive oil cavity 7, the plunger cavity of the valve body 6 is provided with an elastic retainer ring 3 for holes, the bottom of the valve core 2 is provided with a spring mounting groove, a spring cavity is arranged below the valve core 2 in the valve body 6, a return spring 9 is arranged in a space enclosed by the spring mounting groove of the valve core 2 and the spring cavity of the valve body 6, when the valve core 2 slides upwards under the action of the return spring 9, the elastic retainer ring 3 for the hole limits the valve core 2; the top end of the valve core 2 is provided with a roller 1, and a cylindrical surface of the valve core 2, which slides relative to the valve body 6, is provided with a guide belt 5 and a sealing ring 4 (a reciprocating sealing ring); the upper part of the nut 10 is provided with an adjustable damping hole 12 which can lead oil to circulate between the positive oil cavity 7 and the reverse oil cavity 8 and is a threaded hole; an oil drain hole (not shown in the figure) is formed between the spring chamber of the valve body 6 and the oil return chamber 8 so as to communicate with the oil return chamber 8. The lower part of the screw cap 10 is provided with an O-shaped ring mounting groove, and the screw cap 10 and the valve body 6 are sealed through an O-shaped ring 11.
Through the structure arrangement, the adjustable damping hole mechanical throttling speed regulating valve which is compact in structure, high in response speed and control precision and capable of quickly establishing pressure is formed. The invention is applied to a hydraulic system, the roller 1 at the top end of the valve core 2 is associated with a mechanical motion mechanism, and the valve core 2 is pushed to move downwards by the contact of the mechanical motion mechanism and the roller 1, so that the oil flow area is reduced, and finally, a hydraulic execution element is decelerated. The specific process is as follows:
in the initial stage, an actuating element of a hydraulic system moves rapidly, a roller 1 is not contacted with a mechanical movement mechanism on the hydraulic actuating element, a valve core 2 is in a full-open state under the action of a return spring 9, the hydraulic actuating element moves rapidly, when the hydraulic actuating element moves to the tail end of a stroke, the mechanical movement mechanism is contacted with the roller 1, so that the valve core 2 is pushed to move downwards relative to a valve body 6, the overflowing area between the valve core 2 and the valve body 6 is gradually reduced, and the deceleration effect is achieved; when the flow area of the valve core 2 and the valve body 6 is completely reduced to 0, oil in the positive oil cavity 7 enters the return oil cavity 8 through the adjustable damping hole 12, and in the process of rapidly closing the valve core 2, the oil can enter the return oil cavity 8 from the positive oil cavity 7 through the adjustable damping hole 12, so that the problem that a system cannot rapidly build pressure in the process of rapidly closing the valve core 2 is effectively solved, the hydraulic actuating element is stalled or the system is suppressed to damage the hydraulic element due to high-speed rotation and low-speed movement of the hydraulic actuating element, and meanwhile, the adjustable damping hole 12 can control the speed of the tail end stroke of the hydraulic actuating element by converting different aperture specifications.
When the hydraulic execution element moves in a reverse stroke, oil enters the valve body 6 from the reverse oil cavity 8, the plug-in type one-way valve is opened under the action of oil pressure of the reverse oil cavity 8, the oil in the reverse oil cavity 8 quickly flows back to the positive oil cavity 7, the hydraulic execution element moves in a reverse stroke quickly, the mechanical movement mechanism is separated from the roller 1 in the reverse stroke movement process of the hydraulic execution element, the valve core 2 slides upwards under the action of the return spring 9, and the elastic check ring 3 for a hole limits the valve core 2.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A mechanical throttling governing valve of adjustable damping orifice, its characterized in that includes: the valve comprises a roller (1), a valve core (2), an elastic retainer ring (3), a sealing ring (4), a guide belt (5), a valve body (6), a return spring (9), a screw cap (10) and a plug-in type one-way valve; wherein, a plunger cavity required by the sliding of the valve core (2) is arranged on the valve body (6), a positive oil cavity (7) and a reverse oil cavity (8) are arranged on the valve body (6) and are communicated with each other through the flow area of the valve core (2), a cutting groove is arranged at the joint of an oil port of the positive oil cavity (7) and the reverse oil cavity (8) and the plunger cavity in the valve body (6), an installing and inserting type check valve installing hole (14) is arranged at the upper part of the valve body (6), the inserting type check valve is connected with the valve body (6) through threads, so that oil enters the inserting type check valve from the reverse oil cavity (8) to flow into the positive oil cavity (7) under the condition that the valve core (2) is closed, an elastic check ring (3) for holes is arranged in the plunger cavity of the valve body (6), a spring installing groove is arranged at the bottom of the valve core (2), a spring cavity is arranged below the valve core (2) in the valve body (6), a reset spring (9) is arranged in a space enclosed by the spring installing groove of the valve core (2) and the spring cavity of the valve body (6), when the valve core (2) slides upwards under the action of the return spring (9), the valve core (2) is limited by the elastic retainer ring (3) for the hole; the top end of the valve core (2) is provided with a roller (1), and a guide belt (5) and a sealing ring (4) are arranged on the cylindrical surface of the valve core (2) which slides relative to the valve body (6); the upper part of the nut (10) is provided with an adjustable damping hole (12) which is communicated with the positive oil cavity (7) and the reverse oil cavity (8).
2. The mechanical throttle governing valve according to claim 1, wherein the sealing ring (4) is a reciprocating sealing ring.
3. The mechanical throttling governing valve according to claim 1, characterized in that an oil drainage hole is opened between the spring cavity of the valve body (6) and the oil return cavity (8) so that the oil drainage hole is communicated with the oil return cavity (8).
4. The mechanical throttling governing valve according to claim 1, characterized in that, the lower part of the nut (10) is provided with an O-shaped ring mounting groove, and the nut (10) and the valve body (6) are sealed by an O-shaped ring (11).
5. A mechanical throttle valve as set forth in any of claims 1 to 4 characterized in that said adjustable orifice (12) is a threaded orifice.
6. Use of a mechanical throttle governing valve according to any one of claims 1 to 5 in a hydraulic system, characterized by the steps of: the roller (1) at the top end of the valve core (2) is associated with a mechanical motion mechanism, and the valve core (2) is pushed to move downwards by the contact of the mechanical motion mechanism and the roller (1), so that the oil flow area is reduced, and finally, the hydraulic execution element is decelerated.
7. The application of claim 6, wherein the application comprises the steps of:
in the initial stage, an actuating element of a hydraulic system moves, a roller (1) is not contacted with a mechanical movement mechanism on the hydraulic actuating element, a valve core (2) is in a full-open state under the action of a return spring (9), the hydraulic actuating element moves rapidly, when the hydraulic actuating element moves to the stroke end, the mechanical movement mechanism is contacted with the roller (1), so that the valve core (2) is pushed to move downwards relative to a valve body (6), and the overflowing area between the valve core (2) and the valve body (6) is gradually reduced, so that the deceleration effect is achieved; when the flow area of the valve core (2) and the valve body (6) is completely reduced to 0, oil in the positive oil cavity (7) enters the reverse oil cavity (8) through the adjustable damping hole (12), and in the process of rapidly closing the valve core (2), the oil can enter the reverse oil cavity (8) from the positive oil cavity (7) through the adjustable damping hole (12).
8. The use of claim 7, further comprising the steps of: when the hydraulic execution element moves in a reverse stroke mode, oil enters the valve body (6) from the reverse oil cavity (8), the plug-in type one-way valve is opened under the action of oil pressure of the reverse oil cavity (8), the oil in the reverse oil cavity (8) flows back to the positive oil cavity (7) quickly, the hydraulic execution element moves in a reverse stroke mode quickly, in the reverse stroke movement process of the hydraulic execution element, the mechanical movement mechanism is separated from the roller (1), the valve core (2) slides upwards under the action of the reset spring (9), and the elastic check ring (3) for the hole limits the valve core (2).
9. Use according to claim 7, characterised in that the adjustable orifice (12) controls the speed of the end stroke of the hydraulic actuator by switching different aperture sizes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911068596.8A CN110821907B (en) | 2019-11-05 | 2019-11-05 | Mechanical throttling speed regulating valve with adjustable damping hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911068596.8A CN110821907B (en) | 2019-11-05 | 2019-11-05 | Mechanical throttling speed regulating valve with adjustable damping hole |
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| Publication Number | Publication Date |
|---|---|
| CN110821907A CN110821907A (en) | 2020-02-21 |
| CN110821907B true CN110821907B (en) | 2021-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911068596.8A Active CN110821907B (en) | 2019-11-05 | 2019-11-05 | Mechanical throttling speed regulating valve with adjustable damping hole |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112610639B (en) * | 2020-12-09 | 2022-07-19 | 西安精密机械研究所 | Spring type hydraulic damping device and damping method |
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| CN103591350A (en) * | 2013-11-04 | 2014-02-19 | 中国民航大学 | Pilot operated overflow valve for aircraft deicing fluid |
| CN203868014U (en) * | 2014-03-27 | 2014-10-08 | 尤庆民 | Two-position two-way mechanically-operated change valve |
| CN205479527U (en) * | 2016-01-29 | 2016-08-17 | 浙江雄泰阀门制造有限公司 | Check valve with adjustable damping buffering |
| CN106151145A (en) * | 2016-08-27 | 2016-11-23 | 中国煤炭科工集团太原研究院有限公司 | The pressure pilot operated directional control valve in a kind of water route |
| CN107218262A (en) * | 2017-06-06 | 2017-09-29 | 北京航天发射技术研究所 | A kind of machine liquid throttle grverning control valve |
| CN107477210A (en) * | 2017-09-21 | 2017-12-15 | 陈银 | A kind of novel two-position three-way reversal valve |
-
2019
- 2019-11-05 CN CN201911068596.8A patent/CN110821907B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591350A (en) * | 2013-11-04 | 2014-02-19 | 中国民航大学 | Pilot operated overflow valve for aircraft deicing fluid |
| CN203868014U (en) * | 2014-03-27 | 2014-10-08 | 尤庆民 | Two-position two-way mechanically-operated change valve |
| CN205479527U (en) * | 2016-01-29 | 2016-08-17 | 浙江雄泰阀门制造有限公司 | Check valve with adjustable damping buffering |
| CN106151145A (en) * | 2016-08-27 | 2016-11-23 | 中国煤炭科工集团太原研究院有限公司 | The pressure pilot operated directional control valve in a kind of water route |
| CN107218262A (en) * | 2017-06-06 | 2017-09-29 | 北京航天发射技术研究所 | A kind of machine liquid throttle grverning control valve |
| CN107477210A (en) * | 2017-09-21 | 2017-12-15 | 陈银 | A kind of novel two-position three-way reversal valve |
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| CN110821907A (en) | 2020-02-21 |
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