CN211059119U - Thread cartridge formula guide overflow valve - Google Patents
Thread cartridge formula guide overflow valve Download PDFInfo
- Publication number
- CN211059119U CN211059119U CN201921926623.6U CN201921926623U CN211059119U CN 211059119 U CN211059119 U CN 211059119U CN 201921926623 U CN201921926623 U CN 201921926623U CN 211059119 U CN211059119 U CN 211059119U
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- valve core
- valve
- pilot
- pressure regulating
- spring
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Abstract
The utility model discloses a screw thread cartridge formula guide overflow valve, including spring pretightning force adjustment mechanism, pressure regulating valve barrel, pressure regulating spring, fixed valve barrel, case sealing member, main valve core and main valve cover, the one end of pressure regulating spring is contradicted in spring pretightning force adjustment mechanism's inner wall, and the other end is equipped with pilot valve core mechanism, and pilot valve core mechanism one end is contradicted in pressure regulating spring, and the other end is equipped with a damping valve core, and damping valve core is contradicted in pilot valve core mechanism. The utility model discloses following beneficial effect has: the surface of the valve core of the thread insertion type pilot overflow valve is an inclined plane with an angle and is provided with a cylindrical groove, the valve core steel ball is embedded in the cylindrical groove, the valve core steel ball can be completely attached to the valve core oil inlet through the structure, the contact area is large, and the steel ball is universal and can seal the pilot valve sleeve oil inlet and the damping valve core oil inlet from any direction.
Description
Technical Field
The utility model relates to an overflow valve, in particular to screw thread cartridge formula guide's overflow valve.
Background
The pilot overflow valve is used as a liquid pressure control device commonly used in a hydraulic system, various researches on the pilot overflow valve are carried out at home and abroad at present, various pilot overflow valves are sold in the market, but the core components and the basic working principle of the pilot overflow valve do not change greatly, in order to realize the control of an oil way in a mechanical structure, the pilot overflow valve is realized by utilizing a spring set value and pressure difference, most pilot valve core structures of the pilot overflow valves at present are T-shaped structures with an angular inclined surface and a convex point-shaped ball body as a whole, an oil inlet of a pilot valve sleeve is sealed by the angular inclined surface, the convex point-shaped ball body is propped against an oil inlet of a damping valve core, the contact area of the structures is small, the convex point-shaped ball body is required to completely seal the oil inlet valve core, the internal oil way is conducted by slight deviation, the internal pressure, the bump spheroid has high jumping requirement with the central axis, a gap can be formed when the oil inlet angle is changed slightly, so that the valve pressure is unstable, the pressure fluctuation is large, the spheroid is a non-standard part, the processing technology difficulty is large, and the maintenance is not easy.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the existing problem and providing a novel screw thread cartridge formula guide overflow valve.
The above technical purpose of the present invention can be achieved by the following technical solutions:
Screw thread cartridge formula guide overflow valve includes spring pretightning force adjustment mechanism, pressure regulating valve barrel, pressure regulating spring, fixed valve barrel, case sealing member, main valve core and main valve cover, its characterized in that: one end of the pressure regulating spring abuts against the inner wall of the spring pre-tightening force adjusting mechanism, the other end of the pressure regulating spring is provided with a pilot valve core mechanism, one end of the pilot valve core mechanism abuts against the pressure regulating spring, the other end of the pilot valve core mechanism is provided with a damping valve core, and the damping valve core abuts against the pilot valve core mechanism.
The structure ensures the basic component composition of the device body, and the threaded plug-in type pilot overflow valve is optimized through the pilot valve core mechanism and the damping valve core.
Preferably, the pilot valve core mechanism comprises a pilot valve core, a valve core steel ball and a pilot valve sleeve, wherein the pilot valve core is provided with a cylindrical groove along a central axis, a chamfer is arranged on an exposed surface of the groove, the valve core steel ball is abutted against the cylindrical groove, one end of the pilot valve core is abutted against a pressure regulating spring, and the other end of the pilot valve core is provided with the pilot valve sleeve matched with the pilot valve core and the valve core steel ball.
The structure can better ensure that the valve core steel ball seals the oil inlet valve core, the pressure fluctuation is small, and the thread plug-in type pilot overflow valve is stable in work.
Preferably, the pilot valve sleeve is connected with the main valve core in a sealing mode through an O-shaped sealing ring.
The structure ensures the tightness of the inner cavity, oil leakage is avoided, the stability of pressure is ensured, and the connection part can be sealed under stress when the main valve core drives the pilot valve sleeve to move.
Preferably, the pilot valve sleeve is provided with a spring, and the spring is fixed on the pilot valve sleeve.
The structure ensures that the damping valve core can reach a position to be worked after the working is finished, ensures that the oil liquid can quickly fill the cavity between the pilot valve sleeve and the main valve core when the damping valve core is opened next time, and ensures the opening response speed of the pilot overflow valve.
Preferably, pressure regulating valve sleeves are arranged on two sides of the spring pre-tightening force regulating mechanism, and sealing elements are arranged between the spring pre-tightening force regulating mechanism and the pressure regulating valve sleeves.
The structure ensures the tightness of the spring pretightening force adjusting mechanism and the pressure regulating valve sleeve, and oil leakage is avoided.
Preferably, the two sides of the pressure regulating valve sleeve are provided with fixed valve sleeves, and the fixed valve sleeves are connected with the pressure regulating valve sleeve through sealing pieces.
The structure ensures the sealing performance of the pressure regulating valve sleeve and the fixed valve sleeve, oil leakage is avoided, and the stability of pressure is ensured.
Preferably, the fixed valve sleeve is provided with a slot, and a valve core sealing piece is arranged in the slot.
The structure ensures the positioning of the sealing ring, ensures the sealing performance of the fixed valve sleeve and prevents the oil leakage of the fixed valve sleeve.
Preferably, the joint of the main valve sleeve and the oil outlet is provided with an opening, and a sealing sleeve is arranged in the opening.
The structure ensures the positioning of the sealing ring, ensures the sealing performance of the main valve sleeve and prevents the main valve sleeve from leaking oil.
To sum up, the utility model discloses following beneficial effect has: the surface of the valve core of the threaded insertion type pilot overflow valve is an inclined plane with an angle and is provided with a cylindrical groove, the valve core steel ball is embedded in the cylindrical groove, the valve core steel ball can be completely attached to a valve core oil inlet through the structure, the contact area is large, the steel ball is universal, the pilot valve sleeve oil inlet and the damping valve core oil inlet can be sealed from any direction, springs are arranged on the damping valve core and the pilot valve sleeve, the damping valve core can reach a to-be-operated position after the operation is finished, the condition that the accommodating cavity between the pilot valve sleeve and the main valve core can be filled with oil quickly when the valve is opened next time is guaranteed, the opening response speed of the pilot overflow valve is guaranteed, and the valve core returns. The valve core steel ball is a standard component, the processing technology is simple, and the overflow valve is easy to maintain. The valve sleeves are connected by adopting the sealing elements, so that the integral sealing of the overflow valve is ensured, the pressure is stable, and the flow stability of the overflow valve is ensured.
Drawings
Fig. 1 is a stationary cross-sectional view of a threaded cartridge pilot relief valve.
Fig. 2 is a cross-sectional view of the operation of the threaded cartridge pilot relief valve.
In the figure, 1, a spring pretightening force adjusting mechanism, 2, a pressure regulating valve sleeve, 3, a pressure regulating spring, 4, a fixed valve sleeve, 5, a valve core sealing piece, 6, a main valve core, 7, a main valve sleeve, 8, a pilot valve core mechanism, 9, a damping valve core, 81, a pilot valve core, 82, a valve core steel ball, 83 and a pilot valve sleeve.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
In an embodiment, as shown in fig. 1, the thread-inserted pilot relief valve includes a spring pretightening force adjusting mechanism 1, a pressure regulating valve sleeve 2, a pressure regulating spring 3, a fixed valve sleeve 4, a valve core sealing member 5, a main valve core 6 and a main valve sleeve 7, wherein one end of the pressure regulating spring 3 abuts against the inner wall of the spring pretightening force adjusting mechanism 1, the other end of the pressure regulating spring 3 is provided with a pilot valve core mechanism 8, one end of the pilot valve core mechanism 8 abuts against the pressure regulating spring 3, the other end of the pilot valve core mechanism is provided with a damping valve core 9. The pilot valve core mechanism 8 comprises a pilot valve core 81, a valve core steel ball 82 and a pilot valve sleeve 83, wherein the pilot valve core 81 is provided with a cylindrical groove along the central axis, the exposed surface of the groove is provided with a chamfer, the valve core steel ball 82 is abutted against the cylindrical groove, one end of the pilot valve core 81 is abutted against the pressure regulating spring 3, and the other end of the pilot valve core 81 is provided with the pilot valve sleeve 83 matched with the pilot valve core 81 and the valve core steel ball 82. The spring pre-tightening force adjusting mechanism 1 is connected with the pressure regulating valve sleeve 2 through a sealing piece, and the pressure regulating valve sleeve 2 is connected with the fixed valve sleeve 4 through a sealing piece. The fixed valve sleeve 4 is provided with an opening, a valve core sealing element 5 is arranged in the opening, an oil outlet channel is arranged between the fixed valve sleeve 4 and the main valve core 6, an opening is arranged at the joint of the main valve sleeve 7 and an oil outlet, and a sealing sleeve is arranged in the opening. The upper end is an oil outlet T1, and the right side is an oil inlet P1.
When each component in the threaded cartridge valve is at an initial position, the pilot valve element 81 is tightly attached to the pilot valve sleeve 82, the damping valve element 9 is at the rightmost end, and the main valve element 6 is at the rightmost end and blocks hydraulic oil from entering T1 from P1; when hydraulic oil enters the inner cavity of the main valve element 6 through the small valve element hole of the damping valve element 9, the inner cavity is filled with the hydraulic oil, redundant hydraulic oil flows to the pilot valve element 81 along the valve element steel ball 82, then flows through a gap between the fixed valve sleeve 4 and the main valve element 6, and finally is discharged from the oil outlet T1.
As shown in fig. 2, when the inner cavity is filled with oil to form a pressure P2, when P2 is large enough to overcome the set pressure of the pressure regulating spring 3, the damping valve core 9 is pushed inward, the damping valve core 9 and the valve core steel ball 82 are tightly attached to realize sealing, at this time, no oil is fed into the valve core small hole of the damping valve core 9, at this time, hydraulic oil enters the inner cavity through a gap between the damping valve core 9 and the main valve core 6, passes through the valve core steel ball 82 and the pilot valve core 81, and finally flows through a gap between the fixed valve housing 4 and the main valve core 6, and is discharged from the oil outlet T1, due to the throttling effect of the gap between the damping valve core and the main valve core, the pressure of P2 is further reduced, and at the same time, the pilot valve core is also subjected to leftward action of the pressure difference between the two ends of. When P2 drops to the two ends of the main valve core and the force is lost, the valve core moves leftwards to reestablish new balance, and the overflow valve is opened.
The valve core steel ball 82 of the pilot valve core mechanism 8 is embedded into the groove of the pilot valve core 81, and the valve core steel ball 82 is universal, the structure can better seal the oil inlet of the damping valve core 9 than the traditional structure, the pilot valve core 81 of the traditional pilot overflow valve is mostly a T-shaped structure with an angular inclined plane on the surface and a convex point-shaped ball body as a whole, the oil inlet of the pilot valve sleeve 83 is sealed by the angular inclined plane, the convex point-shaped ball body is abutted against the oil inlet of the damping valve core 9, the contact area of the structure is small, the convex point-shaped ball body must completely seal the oil inlet valve core, the internal oil circuit is conducted by slight deviation, the internal pressure of the inner cavity is not changed linearly, the working pressure of the overflow valve is not stable, the jumping requirement of the convex point-shaped ball body and the central axis is high, the gap can be generated, the machining process is difficult to maintain, the salient points are replaced by the valve core steel ball 82, the contact area between the valve core steel ball 82 and the oil inlet of the damping valve core 9 can be increased, the valve core steel ball 82 and a central shaft are kept in a horizontal position, the oil inlet can be sealed due to the universal property of the pressure fluctuation valve core steel ball 82, the working pressure of the overflow valve is stable, and the valve core steel ball 82 is a standard component.
The beneficial effect of this application: the surface of the valve core of the threaded insertion type pilot overflow valve is an inclined plane with an angle and is provided with a cylindrical groove, the valve core steel ball is embedded in the cylindrical groove, the valve core steel ball can be completely attached to a valve core oil inlet through the structure, the contact area is large, the steel ball is universal, the pilot valve sleeve oil inlet and the damping valve core oil inlet can be sealed from any direction, springs are arranged on the damping valve core and the pilot valve sleeve, the damping valve core can reach a to-be-operated position after the operation is finished, the condition that the accommodating cavity between the pilot valve sleeve and the main valve core can be filled with oil quickly when the valve is opened next time is guaranteed, the opening response speed of the pilot overflow valve is guaranteed, and the valve core returns. The valve core steel ball is a standard component, the processing technology is simple, and the overflow valve is easy to maintain. The valve sleeves are connected by adopting the sealing elements, so that the integral sealing of the overflow valve is ensured, the pressure is stable, and the flow stability of the overflow valve is ensured.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Claims (8)
1. The utility model provides a screw thread cartridge formula guide overflow valve, includes spring pretightning force adjustment mechanism (1), pressure regulating valve barrel (2), pressure regulating spring (3), fixed valve barrel (4), case sealing member (5), main valve core (6) and main valve cover (7), its characterized in that: one end of the pressure regulating spring (3) abuts against the inner wall of the spring pre-tightening force regulating mechanism (1), the other end of the pressure regulating spring is provided with a pilot valve core mechanism (8), one end of the pilot valve core mechanism (8) abuts against the pressure regulating spring (3), the other end of the pilot valve core mechanism is provided with a damping valve core (9), and the damping valve core (9) abuts against the pilot valve core mechanism (8).
2. The threaded cartridge type pilot relief valve according to claim 1, characterized in that: the pilot valve core mechanism (8) comprises a pilot valve core (81), a valve core steel ball (82) and a pilot valve sleeve (83), wherein the pilot valve core (81) is provided with a cylindrical groove along the central axis, the exposed surface of the groove is provided with a chamfer, the valve core steel ball (82) is abutted against the cylindrical groove, one end of the pilot valve core (81) is abutted against the pressure regulating spring (3), and the other end of the pilot valve core is provided with the pilot valve sleeve (83) matched with the pilot valve core (81) and the valve core steel ball (82).
3. The threaded cartridge type pilot relief valve according to claim 2, characterized in that: the pilot valve sleeve (83) is provided with a spring, and the spring is fixed on the pilot valve sleeve (83).
4. The threaded cartridge type pilot relief valve according to claim 2, characterized in that: the pilot valve sleeve (83) is connected with the main valve core (6) in a sealing mode through an O-shaped sealing ring.
5. The threaded cartridge type pilot relief valve according to claim 1, characterized in that: the spring pre-tightening force adjusting mechanism is characterized in that pressure adjusting valve sleeves (2) are arranged on two sides of the spring pre-tightening force adjusting mechanism (1), and sealing elements are arranged between the spring pre-tightening force adjusting mechanism (1) and the pressure adjusting valve sleeves (2).
6. The threaded cartridge type pilot relief valve according to claim 5, characterized in that: the pressure regulating valve sleeve is characterized in that fixed valve sleeves (4) are arranged on two sides of the pressure regulating valve sleeve (2), and the fixed valve sleeves (4) are connected with the pressure regulating valve sleeve (2) through sealing pieces.
7. The threaded cartridge pilot relief valve according to claim 6, characterized in that: the fixed valve sleeve (4) is provided with an opening, and a valve core sealing piece (5) is arranged in the opening.
8. The threaded cartridge type pilot relief valve according to claim 1, characterized in that: the main valve sleeve (7) is provided with an opening at the joint with the oil outlet, and a sealing sleeve is arranged in the opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921926623.6U CN211059119U (en) | 2019-11-08 | 2019-11-08 | Thread cartridge formula guide overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921926623.6U CN211059119U (en) | 2019-11-08 | 2019-11-08 | Thread cartridge formula guide overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211059119U true CN211059119U (en) | 2020-07-21 |
Family
ID=71589234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921926623.6U Expired - Fee Related CN211059119U (en) | 2019-11-08 | 2019-11-08 | Thread cartridge formula guide overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211059119U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112032377A (en) * | 2020-08-21 | 2020-12-04 | 浙江大学 | Quick-response pilot operated safety valve and system overpressure quick protection method |
| CN112682378A (en) * | 2020-12-23 | 2021-04-20 | 南岳电控（衡阳）工业技术股份有限公司 | But pressure boost screw thread cartridge formula guide overflow valve |
| CN116906489A (en) * | 2023-07-21 | 2023-10-20 | 宁波顶趣汽车技术有限公司 | Damping valve and hydraulic damper using same |
-
2019
- 2019-11-08 CN CN201921926623.6U patent/CN211059119U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112032377A (en) * | 2020-08-21 | 2020-12-04 | 浙江大学 | Quick-response pilot operated safety valve and system overpressure quick protection method |
| CN112032377B (en) * | 2020-08-21 | 2021-09-14 | 浙江大学 | Quick-response pilot operated safety valve and system overpressure quick protection method |
| CN112682378A (en) * | 2020-12-23 | 2021-04-20 | 南岳电控（衡阳）工业技术股份有限公司 | But pressure boost screw thread cartridge formula guide overflow valve |
| CN116906489A (en) * | 2023-07-21 | 2023-10-20 | 宁波顶趣汽车技术有限公司 | Damping valve and hydraulic damper using same |
| CN116906489B (en) * | 2023-07-21 | 2023-12-15 | 宁波顶趣汽车技术有限公司 | Damping valve and hydraulic damper using same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200721 Termination date: 20211108 |