CN107559253B - Novel screw thread cartridge formula compound liquid accuse one-way throttle valve - Google Patents
Novel screw thread cartridge formula compound liquid accuse one-way throttle valve Download PDFInfo
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- CN107559253B CN107559253B CN201710763753.1A CN201710763753A CN107559253B CN 107559253 B CN107559253 B CN 107559253B CN 201710763753 A CN201710763753 A CN 201710763753A CN 107559253 B CN107559253 B CN 107559253B
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Abstract
The invention provides a novel thread plug-in type composite hydraulic control one-way throttle valve which comprises an inner valve body and an outer valve body, wherein the inner valve body is in butt joint with the outer valve body to form a composite valve body; an adjusting screw rod, a throttling valve core and a one-way throttling valve sleeve which are coaxial are sequentially arranged in the outer valve body along the axial direction, and the one-way throttling valve sleeve is sleeved on the outer side of the throttling valve core; a hydraulic control push rod in-place cavity, a cone valve port, a steel ball in-place cavity and a stop valve seat installation cavity are sequentially formed in the inner valve body from the free end to the fixed end along the axial direction, and a coaxial hydraulic control push rod, a coaxial steel ball and a stop valve seat are sequentially installed in the hydraulic control push rod in-place cavity, the steel ball in-place cavity and the stop valve seat installation cavity; wherein, the one-way throttle valve sleeve, the steel ball and the hydraulic control push rod are respectively provided with a throttle reset spring, a steel ball reset spring and a hydraulic control push rod reset spring. The hydraulic control valve group integrates the functions of one-way locking, one-way oil inlet, hydraulic control oil return throttling and manual stopping, meets the miniaturization of the hydraulic control valve group, and meets the requirement of 1.16 mm drift diameter.
Description
Technical Field
The invention relates to the field of valves, in particular to a novel threaded plug-in type composite hydraulic control one-way throttle valve.
Background
With the continuous development of the technical field of control equipment of medical operating tables, after the control function requirements are met, the miniaturization requirements are continuously provided for the hydraulic system so as to meet the requirements of attractiveness and simplicity and convenience in installation. The hydraulic valve adopting the prior art can only provide a single control function, and a plurality of valves of different types are often needed when a hydraulic circuit is constructed, so that the constructed hydraulic control valve set is complex in structure, and the requirement of miniaturization is more and more difficult to meet in volume.
Disclosure of Invention
The invention aims to provide a novel thread plug-in type composite hydraulic control one-way throttle valve which integrates the functions of one-way locking, one-way oil inlet, hydraulic control oil return throttling and manual stopping, has the characteristics of simple structure and simplicity and convenience in installation, can greatly reduce the number of valve pieces in a hydraulic control loop, and meets the requirement of miniaturization of a hydraulic control valve group.
In order to achieve the purpose, the novel threaded plug-in type composite hydraulic control one-way throttle valve provided by the invention comprises an inner valve body and an outer valve body, wherein the inner valve body and the outer valve body are coaxially butted to form a composite valve body;
a screw rod positioning cavity, a throttling valve core positioning cavity and a throttling valve sleeve positioning cavity are sequentially formed in the outer valve body from the free end to the fixed end along the axial direction, a coaxial adjusting screw rod, a throttling valve core and a one-way throttling valve sleeve are sequentially arranged in the screw rod positioning cavity, the throttling valve core positioning cavity and the throttling valve sleeve positioning cavity, and the one-way throttling valve sleeve is sleeved on the outer side of the throttling valve core;
a hydraulic control push rod in-place cavity, a conical valve port, a steel ball in-place cavity and a stop valve seat installation cavity are sequentially formed in the inner valve body from the free end to the fixed end along the axial direction, and coaxial hydraulic control push rods, steel balls and stop valve seats are sequentially installed in the hydraulic control push rod in-place cavity, the steel ball in-place cavity and the stop valve seat installation cavity;
the one-way throttle valve sleeve, the steel ball and the hydraulic control push rod are respectively provided with a throttle reset spring, a steel ball reset spring and a hydraulic control push rod reset spring.
Furthermore, in the novel thread plug-in type composite hydraulic control one-way throttle valve, a locking nut is arranged at the joint of the adjusting screw rod and the outer valve body.
Furthermore, in the novel thread plug-in type composite hydraulic control one-way throttle valve, a throttle orifice is arranged on the one-way throttle valve sleeve.
Furthermore, in the novel thread plug-in type composite hydraulic control one-way throttle valve, an inner conical surface matched with the throttle valve core is arranged at a valve seat opening of the stop valve seat.
Furthermore, in the novel thread cartridge type composite hydraulic control one-way throttle valve, cartridge threads are arranged on the outer side of the fixed end of the outer valve body.
Compared with the prior art, the invention has the beneficial effects that: the three relatively independent launching pieces of the one-way throttle valve, the stop valve and the hydraulic control one-way valve are integrated into a composite hydraulic valve piece, the number of the valve pieces in a hydraulic control loop can be greatly reduced, the size is greatly reduced, the requirement that the miniaturization of the hydraulic control valve bank reaches the drift diameter of 1.16 mm is met, the functions of one-way locking, one-way oil feeding, hydraulic control oil return throttling and manual stopping are integrated, and the hydraulic control valve has the characteristics of simple structure and simplicity and convenience in installation.
Drawings
FIG. 1 is a schematic view of a composite valve body according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a threaded cartridge type composite hydraulic control one-way throttle valve according to an embodiment of the present invention;
FIG. 3 is a schematic view of the one-way locking function of the combination valve according to an embodiment of the present invention;
FIG. 4 is a schematic view of a one-way oil outlet function of the combination valve according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of the hydraulic control oil return throttling function of the combination valve according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of the manual shut-off function of the combination valve according to an embodiment of the present invention.
Detailed Description
The novel threaded cartridge type compound pilot operated check throttle valve of the present invention will now be described in more detail with reference to the schematic drawings, wherein a preferred embodiment of the present invention is shown, it being understood that one skilled in the art could modify the invention herein described while still achieving the advantageous effects of the present invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.
As shown in fig. 1 and fig. 2, the novel threaded cartridge type composite hydraulic control one-way throttle valve (hereinafter referred to as a composite valve for convenience of description) provided by the present invention mainly comprises a composite valve body assembly formed by coaxially abutting an outer valve body 100 and an inner valve body 200, wherein the outer valve body 100 and the inner valve body 200 are in threaded abutment in general, and a cartridge thread 140 is provided outside a fixed end of the outer valve body 100 and the inner valve body 200, and the cartridge thread 140 is used for mounting the composite valve in a valve block 300.
A screw rod positioning cavity 110, a throttle valve core positioning cavity 120 and a throttle valve sleeve positioning cavity 130 (from left to right as shown in fig. 1) are sequentially formed in the outer valve body 100 from the free end to the fixed end along the axial direction, a coaxial adjusting screw rod 111, a throttle valve core 121 and a one-way throttle valve sleeve 131 (from left to right as shown in fig. 2) are sequentially installed in the screw rod positioning cavity 110, the throttle valve core positioning cavity 120 and the throttle valve sleeve positioning cavity 130, and the one-way throttle valve sleeve 131 is sleeved outside the throttle valve core 121. The one-way throttle valve sleeve 131 is provided with a throttle opening 133, a locking nut 112 is arranged at the joint of the adjusting screw 111 and the outer valve body 100, and the size of the throttle opening 133 is controlled by the adjusting screw 111 to adjust the flow in the oil path.
A hydraulic control push rod seating cavity 210, a cone valve port 220, a steel ball seating cavity 230 and a stop valve seat mounting cavity 240 are sequentially formed in the inner valve body 200 from a free end to a fixed end (from left to right as shown in fig. 1) along the axial direction, and a coaxial hydraulic control push rod 211, a steel ball 231 and a stop valve seat 241 are sequentially mounted in the hydraulic control push rod seating cavity 210, the steel ball seating cavity 230 and the stop valve seat mounting cavity 240 (from left to right as shown in fig. 2). The valve seat opening of the cut-off valve seat 241 is provided with an inner conical surface 242 matched with the throttle valve core 121, and the throttle valve core 121 is pushed by manually rotating the adjusting screw 111 to pass through the throttle orifice 133 on the one-way throttle valve sleeve 131 and contact with the inner conical surface 242 of the cut-off valve seat 241 to form linear sealing, so that the function of cutting off an oil way is achieved. In addition, a line seal may be formed between the steel ball 231 and the cone valve opening 220.
The one-way throttle valve sleeve 131, the steel ball 231 and the hydraulic control push rod 211 are respectively provided with a throttle return spring 132, a steel ball return spring 232 and a hydraulic control push rod return spring 212.
Specifically, the working principle of the novel threaded plug-in type composite hydraulic control one-way throttle valve proposed by the present invention will be described in detail below (for convenience of description, the novel threaded plug-in type composite hydraulic control one-way throttle valve is hereinafter referred to as a composite valve), as shown in fig. 3, an oil inlet (1# oil port) is formed between the free end of the inner valve body 200 and the hydraulic control push rod 211 on the valve block 300 of the composite valve plug-in type composite valve, an oil outlet (2# oil port) is formed at the throttle opening 133, and a hydraulic control port (3# oil port) is formed at one end of the hydraulic control push rod extending out.
A. One-way locking function (2# oil port → 1# oil port)
As shown in fig. 3, when no pressure oil enters from the oil port # 1 and the oil port # 3, the steel ball 231 is pressed down to the conical valve port 220 of the inner valve body 200 to form a line seal under the action of the steel ball return spring 232, and the hydraulic oil cannot flow from the oil port # 2 to the oil port # 1; the composite valve has a one-way locking function in the direction of the oil port No. 2 → the oil port No. 1;
B. one-way oil outlet function (1# oil port → 2# oil port)
As shown in fig. 4, after the pressure oil enters from the # 1 port of the combination valve, the steel ball 231 is ejected from the conical valve port 220 of the inner valve body 200 under the action of the pressure oil and flows to the one-way throttle valve sleeve 131 through the stop valve seat 241, the one-way throttle valve sleeve 131 can move axially along the throttle valve core 121 under the pushing of the pressure oil and is separated from the stop valve seat 241 to form a channel, and the flow in the direction of the # 1 port → the # 2 port is not controlled by the throttle valve 121; the compound valve has a one-way oil outlet function (oil port # 1 → oil port # 2);
the pressure oil of the oil port No. 1 is removed, the steel ball 231 and the one-way throttle valve sleeve 131 are reset under the action of the steel ball return spring 232 and the throttle return spring 132, and the composite valve returns to the one-way locking state.
C. Hydraulic control oil return throttling function (2# oil port → 1# oil port)
As shown in fig. 5, when the hydraulic control pressure oil enters the # 3 oil port, the hydraulic control push rod 211 forcibly pushes the steel ball 231 to open from the conical valve port 220 of the inner valve body 200 under the pushing of the hydraulic control pressure oil, so that the hydraulic oil of the # 2 oil port can flow back to the # 1 oil port through the throttle port 133 on the one-way throttle valve sleeve 131 and through the stop valve seat 241; the size of the orifice 133 is controlled by the throttle valve spool 121; the # 2 oil port is generally connected with an actuator (such as an oil cylinder), and the opening area of the throttle port 133 can be reduced by rotating the adjusting screw 111 clockwise, so that the oil return resistance is increased, and the movement speed of the actuator is reduced; conversely, the opening area of the throttling port 133 can be enlarged by rotating the adjusting screw 111 anticlockwise, so that the movement speed of the actuator is increased; thus, the combination valve has the hydraulic control oil return throttling function in the direction of the oil port No. 2 → the oil port No. 1, and the opening size of the throttling port 133 is manually adjustable.
The hydraulic control pressure oil of the No. 3 oil port is cancelled, the hydraulic control push rod 211 is separated from the steel ball 231 to reset under the action of the hydraulic control push rod reset spring 212, and the compound valve returns to the one-way locking state.
D. Manual shut-off function
As shown in fig. 6, the throttle valve body 121 is pushed by manually rotating the adjusting screw 111 clockwise to pass through the throttle opening 133 of the one-way throttle valve sleeve 131 and contact with the inner conical surface 242 of the cut-off valve seat 241 to form a linear seal, hydraulic oil cannot flow between the oil ports 1# and 2# to form a two-way cut-off function, and the two-way cut-off function can be manually released by rotating the adjusting screw 111 counterclockwise.
In summary, in the novel threaded plug-in type composite hydraulic control one-way throttle valve provided by the embodiment of the invention, three relatively independent launching components, namely the one-way throttle valve, the stop valve and the hydraulic control one-way valve, are integrated into one composite hydraulic valve component, so that the number of the valve components in a hydraulic control loop can be greatly reduced, the size is greatly reduced, the requirement of miniaturization of a hydraulic control valve bank is met, the functions of one-way locking, one-way oil inlet, hydraulic control oil return throttling and manual stop are integrated, and the novel threaded plug-in type composite hydraulic control one-way throttle valve has the characteristics of simple.
The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any way. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (5)
1. A novel threaded plug-in type composite hydraulic control one-way throttle valve comprises an inner valve body and an outer valve body, and is characterized in that the inner valve body and the outer valve body are coaxially butted to form a composite valve body;
a screw rod positioning cavity, a throttling valve core positioning cavity and a throttling valve sleeve positioning cavity are sequentially formed in the outer valve body from the free end to the fixed end along the axial direction, a coaxial adjusting screw rod, a throttling valve core and a one-way throttling valve sleeve are sequentially arranged in the screw rod positioning cavity, the throttling valve core positioning cavity and the throttling valve sleeve positioning cavity, and the one-way throttling valve sleeve is sleeved on the outer side of the throttling valve core; the one-way throttle valve sleeve is provided with a throttle orifice;
a hydraulic control push rod in-place cavity, a conical valve port, a steel ball in-place cavity and a stop valve seat installation cavity are sequentially formed in the inner valve body from the free end to the fixed end along the axial direction, and coaxial hydraulic control push rods, steel balls and stop valve seats are sequentially installed in the hydraulic control push rod in-place cavity, the steel ball in-place cavity and the stop valve seat installation cavity; an inner conical surface matched with the throttling valve core is arranged at the valve seat opening of the stop valve seat;
the one-way throttle valve sleeve, the steel ball and the hydraulic control push rod are respectively provided with a throttle reset spring, a steel ball reset spring and a hydraulic control push rod reset spring.
2. The novel threaded plug-in type composite hydraulic control one-way throttle valve according to claim 1, wherein a locking nut is arranged at the joint of the adjusting screw and the outer valve body.
3. The novel threaded plug-in type composite hydraulic control one-way throttle valve according to claim 1, wherein a throttle orifice is arranged on the one-way throttle valve sleeve.
4. The novel threaded plug-in type composite hydraulic control one-way throttle valve according to claim 1, wherein the valve seat opening of the stop valve seat is provided with an inner conical surface matched with the throttle valve core.
5. The novel threaded plug-in type composite hydraulic control one-way throttle valve according to claim 1, wherein a plug-in thread is arranged outside a fixed end of the outer valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710763753.1A CN107559253B (en) | 2017-08-30 | 2017-08-30 | Novel screw thread cartridge formula compound liquid accuse one-way throttle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710763753.1A CN107559253B (en) | 2017-08-30 | 2017-08-30 | Novel screw thread cartridge formula compound liquid accuse one-way throttle valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107559253A CN107559253A (en) | 2018-01-09 |
| CN107559253B true CN107559253B (en) | 2019-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710763753.1A Active CN107559253B (en) | 2017-08-30 | 2017-08-30 | Novel screw thread cartridge formula compound liquid accuse one-way throttle valve |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2130217Y (en) * | 1992-01-29 | 1993-04-21 | 广州市国营白云液压机械厂 | Liquid controlled single-single way throttle composite valve |
| CN101307785A (en) * | 2008-06-23 | 2008-11-19 | 上海耐斯特液压设备有限公司 | Ultra-high hydraulic lifting valve group for double-acting hydraulic oil cylinder |
| CN202545401U (en) * | 2012-04-23 | 2012-11-21 | 山东泰丰液压股份有限公司 | Large-flow cartridge one-way throttle valve |
| CN103352994A (en) * | 2013-06-28 | 2013-10-16 | 安徽江淮汽车股份有限公司 | One-way throttling valve and one-way throttling pipeline |
| CN205278463U (en) * | 2015-11-20 | 2016-06-01 | 重庆山能仪表有限公司 | Check valve with steel ball valve element |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4440215B2 (en) * | 2004-02-04 | 2010-03-24 | 株式会社コスメック | Flow control valve and cylinder device with flow control valve |
-
2017
- 2017-08-30 CN CN201710763753.1A patent/CN107559253B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2130217Y (en) * | 1992-01-29 | 1993-04-21 | 广州市国营白云液压机械厂 | Liquid controlled single-single way throttle composite valve |
| CN101307785A (en) * | 2008-06-23 | 2008-11-19 | 上海耐斯特液压设备有限公司 | Ultra-high hydraulic lifting valve group for double-acting hydraulic oil cylinder |
| CN202545401U (en) * | 2012-04-23 | 2012-11-21 | 山东泰丰液压股份有限公司 | Large-flow cartridge one-way throttle valve |
| CN103352994A (en) * | 2013-06-28 | 2013-10-16 | 安徽江淮汽车股份有限公司 | One-way throttling valve and one-way throttling pipeline |
| CN205278463U (en) * | 2015-11-20 | 2016-06-01 | 重庆山能仪表有限公司 | Check valve with steel ball valve element |
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| Publication number | Publication date |
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| CN107559253A (en) | 2018-01-09 |
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