CN112762206A - Speed regulating valve with pressure reducing and throttling double adjusting functions - Google Patents
Speed regulating valve with pressure reducing and throttling double adjusting functions Download PDFInfo
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- CN112762206A CN112762206A CN202110063160.0A CN202110063160A CN112762206A CN 112762206 A CN112762206 A CN 112762206A CN 202110063160 A CN202110063160 A CN 202110063160A CN 112762206 A CN112762206 A CN 112762206A
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- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/048—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded combined with other safety valves, or with pressure control devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/002—Actuating devices; Operating means; Releasing devices actuated by temperature variation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Temperature-Responsive Valves (AREA)
Abstract
本发明公开了一种具有减压和节流双调节功能的调速阀，属于调速阀技术领域。阀体中设有腔室a和腔室b，阀芯a与腔室a内壁滑动连接并将腔室a分为作用腔a和作用腔b，弹簧a4两端分别连作用腔a内壁和阀芯a，阀芯b与腔室b内壁滑动连接。本发明的有益效果是：采用形状记忆合金材质的三角沟槽式节流口，油温升高导致泄漏增加，形状记忆合金随温度产生形变，使三角沟槽增大，对泄露量进行补偿，从而使输出流量稳定；采用聚氯乙烯芯，油温升高时，聚氯乙烯芯长度增加，推动阀芯c右移，增大阀口流量，反之则减小，从而根据温度变化改变进油流量。
The invention discloses a speed regulating valve with the functions of decompression and throttling, and belongs to the technical field of speed regulating valves. The valve body is provided with a chamber a and a chamber b, the valve core a is slidably connected to the inner wall of the chamber a, and the chamber a is divided into an action chamber a and an action chamber b, and both ends of the spring a4 are connected to the inner wall of the chamber a and the valve respectively. The core a and the valve core b are slidably connected with the inner wall of the chamber b. The beneficial effects of the invention are as follows: a triangular groove type throttle made of shape memory alloy material is used, the increase of oil temperature leads to an increase in leakage, and the shape memory alloy deforms with temperature, so that the triangular groove is enlarged, and the leakage amount is compensated. So that the output flow is stable; when the oil temperature rises, the length of the PVC core increases, pushing the valve core c to the right, increasing the valve port flow, and vice versa, so as to change the oil inlet according to the temperature change flow.
Description
Technical Field
The invention relates to a speed regulating valve with pressure reducing and throttling double adjusting functions, and belongs to the technical field of speed regulating valves.
Background
According to the principle of the equal-difference speed regulating valve, the speed regulating valve is a combined valve formed by connecting a constant-difference pressure reducing valve and a throttle valve in series, the throttle valve is used for regulating the flow passing through, the constant-difference pressure reducing valve automatically compensates the influence of load change, so that the pressure difference between the front and the back of the throttle valve is kept unchanged, the influence of the load change on the flow is eliminated, the pressure between the front and the back of the throttle valve is respectively led to two ends of the equal-difference pressure reducing valve, and the hydraulic driving force generated by the pressure difference is balanced with the difference between the spring elasticity and the hydraulic power, namely the hydraulic driving force generated by the pressure difference is equal. When the pressure of the load is increased, the hydraulic pressure acting on the left end of the valve core of the pressure reducing valve is increased, the valve core moves to the right, the pressure reducing port is increased, and the pressure drop is reduced, so that the pressure difference of the throttle valve is kept unchanged, and vice versa, the flow of the speed regulating valve is constant, and the flow stability requirement of the speed regulating valve is increasingly improved along with the progress and iteration of the technology, such as the robot hydraulic system, a robot hand on a production line, a low-speed stable logistics carrying and positioning system and other places with higher requirements on positioning accuracy and stability. The faults occurring in the existing speed regulating valve comprise flow regulation failure, flow instability, internal leakage increase and the like, wherein oil temperature rise is one of the reasons causing flow instability, researches show that when the speed regulating valve is used for speed regulation, the oil temperature is generally influenced, after the temperature of hydraulic oil rises due to work, leakage of a throttle valve is increased, output flow is reduced when the leakage is increased, and the output flow of the speed regulating valve is unstable when the total output flow is smaller. In the occasions with high requirement on speed control precision, such as full-automatic robots, factory large-scale mechanical equipment, plastic packaging machinery and the like, the performance of the existing speed regulating valve can not meet the requirement.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide the speed regulating valve which can adapt to temperature change and has higher stability and double functions of pressure reduction and throttling.
The technical scheme of the invention is as follows: a speed regulating valve with pressure reducing and throttling double regulating functions is characterized in that a valve body is internally provided with a cavity a and a cavity b, a valve core a is in sliding connection with the inner wall of the cavity a and divides the cavity a into an action cavity a and an action cavity b, two ends of a spring a4 are respectively connected with the inner wall of the action cavity a and the valve core a, the valve core b is in sliding connection with the inner wall of the cavity b, the valve core b comprises a polyvinyl chloride core in the middle and a metal core a and a metal core b which are connected with two sides of the polyvinyl chloride core, the end part of the metal core a is connected with the valve core a, the metal core b is connected with a valve core c through a connecting rod, the valve core c is in sliding connection with the cavity b, the cavity b is divided into an action cavity c and an oil conveying cavity a by the valve core c, an oil inlet is arranged above the oil conveying cavity a, the bottom of the oil conveying cavity, the cavity c is divided into an oil conveying cavity b and an action cavity c by the valve core d, a triangular groove type throttling opening is formed in the valve core d at the joint of the oil conveying cavity b and the cross channel and is made of shape memory alloy materials, the oil conveying cavity b22 is communicated with the action cavity a through the oil conveying channel a, the oil conveying cavity b is communicated with the action cavity c through the oil conveying channel b, the two ends of the spring b are respectively connected with the inner wall of the oil conveying cavity b and the valve core d, an oil outlet is formed in the bottom of the oil conveying cavity b, the adjusting handle penetrates through and is in threaded connection with the valve body, and the end of the adjusting handle is.
The oil outlet is connected with a hydraulic cylinder to drive a load.
The oil outlet is positioned at the bottom of the side of the triangular groove type valve port.
The invention has the beneficial effects that: the triangular groove type throttling opening made of the shape memory alloy is adopted, the oil temperature rises to increase leakage, the shape memory alloy deforms along with the temperature to enlarge the triangular groove, the leakage amount is compensated, and therefore the output flow is stable; by adopting the polyvinyl chloride core, when the oil temperature rises, the length of the polyvinyl chloride core is increased, the valve core c is pushed to move rightwards, the flow of the valve port is increased, otherwise, the flow is reduced, and the oil inlet flow is changed according to the temperature change.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
The reference numbers in the figures are as follows: 1. the oil-conveying valve comprises a valve body 2, oil conveying channels a and 3, action cavities a and 4, springs a and 5, oil conveying cavities a and 6, valve cores a and 7, action cavities b and 8, polyvinyl chloride cores 9, an oil inlet, 10, valve cores c and 11, metal cores a and 12, action cavities c and 13, a cross channel, 14, a triangular groove type throttling opening, 15, valve cores d and 16, oil conveying channels b and 17, an adjusting handle, 18, action cavities c and 19, an oil outlet, 20, springs b and 21, metal cores b and 22 and an oil conveying cavity b.
Detailed Description
The invention is further illustrated with reference to figure 1:
a speed regulating valve with pressure reducing and throttling double regulation functions is characterized in that a valve body 1 is internally provided with a cavity a and a cavity b, a valve core a6 is in sliding connection with the inner wall of the cavity a and divides the cavity a into an action cavity a3 and an action cavity b7, two ends of a spring a4 are respectively connected with the inner wall of the action cavity a3 and a valve core a6, the valve core b is in sliding connection with the inner wall of the cavity b, the valve core b comprises a polyvinyl chloride core 8 in the middle and a metal core a11 and a metal core b21 which are connected with two sides of the polyvinyl chloride core 8, the end of the metal core a11 is connected with the valve core a6, the metal core b21 is connected with the valve core c10 through a connecting rod, the valve core c10 is in sliding connection with the cavity b, the valve core c10 divides the cavity b into an action cavity c12 and an oil conveying cavity a5, an oil conveying cavity a5 is provided with an oil inlet 9 above, the oil conveying cavity a5 is communicated with a cross channel 13 at the bottom, the cross channel, the cavity c is divided into an oil conveying cavity b22 and an action cavity c18 by the valve core d15, a triangular groove type throttling port 14 is formed in the valve core d15 at the joint of the oil conveying cavity b22 and the cross channel 13, the triangular groove type throttling port 14 is made of shape memory alloy materials, the oil conveying cavity b22 is communicated with the action cavity a3 through the oil conveying channel a2, the oil conveying cavity b22 is communicated with the action cavity c18 through the oil conveying channel b16, the inner wall of the oil conveying cavity b22 and the valve core d15 are respectively connected with the two ends of the spring b20, a triangular oil outlet 19 is formed in the bottom of the oil conveying cavity b22, the oil outlet 19 is located at the bottom of the side of the groove type valve port, the oil outlet 19 is connected with a hydraulic cylinder to drive a load, the adjusting handle 17 penetrates through.
The working process of the invention is as follows:
when the temperature of the hydraulic oil rises due to work, the leakage is increased, for example, the leakage leaks from a thread gap between the handle 17 and the valve body 1, the temperature reaches the deformation temperature of the shape memory alloy, the groove of the triangular groove type throttling port 14 of the oil outlet 19 of the valve core d15 is enlarged, the oil quantity entering the oil conveying cavity b22 through the cross channel 13 is increased, the leakage amount is compensated, in order to meet the sufficient oil supply in the valve body 1, the middle part of the valve core b is designed into a polyvinyl chloride core 8 which expands after being heated, the length is increased, the valve core c10 is pushed to move rightwards, the communication gap between the oil inlet 9 and the oil delivery cavity a5 is enlarged, thereby increasing the flow rate of the hydraulic oil entering the oil delivery cavity a5, thereby increasing the flow rate entering the cross passage 13 and ensuring that sufficient oil is supplied to the oil delivery chamber b22, so that the leakage compensation can be normally performed, and the flow rate of the oil outlet 19 is stabilized, so that the hydraulic cylinder connected with the oil outlet works stably.
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 (3)
1. A speed regulating valve with pressure reduction and throttling double regulation functions is characterized in that a cavity a and a cavity b are arranged in a valve body (1), a valve core a (6) is in sliding connection with the inner wall of the cavity a and divides the cavity a into an action cavity a (3) and an action cavity b (7), two ends of a spring a (4) are respectively connected with the inner wall of the action cavity a (3) and the valve core a (6), a valve core b is in sliding connection with the inner wall of the cavity b, the valve core b comprises a polyvinyl chloride core (8) in the middle and metal cores a (11) and b (21) connected to two sides of the polyvinyl chloride core (8), the end part of the metal core a (11) is connected with the valve core a (6), the metal core b (21) is connected with a valve core c (10) through a connecting rod, the valve core c (10) is in sliding connection with the cavity b, the cavity b is divided into an action cavity c (12) and an oil conveying cavity a (5) by the valve core c (10), the bottom of an oil conveying cavity a (5) is communicated with a cross channel (13), the bottom of the cross channel (13) is connected with a cavity c, two sides of the cross channel (13) are communicated with an action cavity b (7) and an action cavity c (12), a valve core d (15) is arranged in the cavity c, the cavity c is divided into an oil conveying cavity b (22) and an action cavity c (18) by the valve core d (15), a triangular groove type throttling opening (14) is arranged on the valve core d (15) at the joint of the oil conveying cavity b (22) and the cross channel (13), the triangular groove type throttling opening (14) is made of a shape memory alloy material, the oil conveying cavity b (22) is communicated with the action cavity a (3) through an oil conveying channel a (2), the oil conveying cavity b (22) is communicated with the action cavity c (18) through an oil conveying channel b (16), two ends of a spring b (20) are respectively connected with the inner wall of the oil conveying cavity b (22) and the valve core d (15), the adjusting handle (17) penetrates through and is in threaded connection with the valve body (1), and the end part of the adjusting handle (17) is connected with the valve core d (15).
2. A speed valve with pressure reducing and throttling double regulation functions according to claim 1, characterized in that the oil outlet (19) is connected with a hydraulic cylinder driven load.
3. A speed valve with pressure reducing and throttling double regulation functions as claimed in claim 1, characterized in that said oil outlet (19) is located at the bottom of the valve port side of the triangular groove type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110063160.0A CN112762206B (en) | 2021-01-18 | 2021-01-18 | A speed regulating valve with dual regulating functions of pressure reduction and throttling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110063160.0A CN112762206B (en) | 2021-01-18 | 2021-01-18 | A speed regulating valve with dual regulating functions of pressure reduction and throttling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112762206A true CN112762206A (en) | 2021-05-07 |
| CN112762206B CN112762206B (en) | 2025-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110063160.0A Active CN112762206B (en) | 2021-01-18 | 2021-01-18 | A speed regulating valve with dual regulating functions of pressure reduction and throttling |
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| CN (1) | CN112762206B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5277028A (en) * | 1990-03-26 | 1994-01-11 | Mercedes-Benz Ag | Hydraulic flow control with temperature sensitive spring biased bypass valve |
| CN101368583A (en) * | 2008-10-08 | 2009-02-18 | 贵州枫阳液压有限责任公司 | Timing reversal valve |
| CN102242743A (en) * | 2011-07-11 | 2011-11-16 | 南京航空航天大学 | Multi-nozzle baffle plate electro-hydraulic servo valve and working method thereof |
| RU2011105571A (en) * | 2011-02-14 | 2012-08-20 | Открытое акционерное общество "Павловский машиностроительный завод ВОСХОД" - ОАО "ПМЗ ВОСХОД" (RU) | HYDRAULIC REDUCTION VALVE |
| CN104533866A (en) * | 2015-01-15 | 2015-04-22 | 浙江海宏液压科技股份有限公司 | Hydraulic speed regulating valve |
| JP2015117637A (en) * | 2013-12-18 | 2015-06-25 | 株式会社山田製作所 | Relief device of oil pump |
| CN204591449U (en) * | 2015-04-14 | 2015-08-26 | 重庆工业职业技术学院 | A kind of cooling fan of engine clutch |
| CN105042155A (en) * | 2015-08-12 | 2015-11-11 | 无锡乐华自动化科技有限公司 | Speed regulation method for gate type flow speed control valve |
| CN106907367A (en) * | 2017-04-17 | 2017-06-30 | 西华大学 | New Structure Speed Control Valve |
| CN214425193U (en) * | 2021-01-18 | 2021-10-19 | 大连大学 | A speed control valve with dual regulation functions of decompression and throttling |
-
2021
- 2021-01-18 CN CN202110063160.0A patent/CN112762206B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5277028A (en) * | 1990-03-26 | 1994-01-11 | Mercedes-Benz Ag | Hydraulic flow control with temperature sensitive spring biased bypass valve |
| CN101368583A (en) * | 2008-10-08 | 2009-02-18 | 贵州枫阳液压有限责任公司 | Timing reversal valve |
| RU2011105571A (en) * | 2011-02-14 | 2012-08-20 | Открытое акционерное общество "Павловский машиностроительный завод ВОСХОД" - ОАО "ПМЗ ВОСХОД" (RU) | HYDRAULIC REDUCTION VALVE |
| CN102242743A (en) * | 2011-07-11 | 2011-11-16 | 南京航空航天大学 | Multi-nozzle baffle plate electro-hydraulic servo valve and working method thereof |
| JP2015117637A (en) * | 2013-12-18 | 2015-06-25 | 株式会社山田製作所 | Relief device of oil pump |
| CN104533866A (en) * | 2015-01-15 | 2015-04-22 | 浙江海宏液压科技股份有限公司 | Hydraulic speed regulating valve |
| CN204591449U (en) * | 2015-04-14 | 2015-08-26 | 重庆工业职业技术学院 | A kind of cooling fan of engine clutch |
| CN105042155A (en) * | 2015-08-12 | 2015-11-11 | 无锡乐华自动化科技有限公司 | Speed regulation method for gate type flow speed control valve |
| CN106907367A (en) * | 2017-04-17 | 2017-06-30 | 西华大学 | New Structure Speed Control Valve |
| CN214425193U (en) * | 2021-01-18 | 2021-10-19 | 大连大学 | A speed control valve with dual regulation functions of decompression and throttling |
Non-Patent Citations (2)
| Title |
|---|
| 宋靖远;陈长忠;: "调速阀的工作原理", 煤炭技术, no. 07, 10 July 2008 (2008-07-10), pages 16 - 17 * |
| 王锡茂: "油温对调速阀微小流量变化率影响的分析", 组合机床与自动化加工技术, no. 02, 28 February 1983 (1983-02-28), pages 19 - 25 * |
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| CN112762206B (en) | 2025-02-25 |
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