CN201475451U - Ultrahigh pressure regulating overflow valve - Google Patents
Ultrahigh pressure regulating overflow valve Download PDFInfo
- Publication number
- CN201475451U CN201475451U CN2009201899052U CN200920189905U CN201475451U CN 201475451 U CN201475451 U CN 201475451U CN 2009201899052 U CN2009201899052 U CN 2009201899052U CN 200920189905 U CN200920189905 U CN 200920189905U CN 201475451 U CN201475451 U CN 201475451U
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- valve
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- diameter cylinder
- valve seat
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Abstract
The utility model discloses an ultrahigh pressure regulating overflow valve. The ultrahigh pressure regulating overflow valve comprises a valve body and a valve seat, a valve core, a return spring, a damping rod, a pressure adjusting spring, a guide sleeve, an end cover and an adjusting screw rod which are arranged in the valve body, wherein the valve core is coaxially fixed at the front end of the damping rod, a valve port fitted with the valve core is formed on the valve seat, a hydraulic channel communicated with the valve port is arranged on the valve body, the damping rod is formed by axially arranged cylinders with different diameters, the major-diameter cylinder sealed and matched with an inner cavity of the valve body in a sliding manner is arranged at the front end of the damping rod, the minor-diameter cylinder is arranged at the rear end of the damping rod, the return spring is arranged between the major-diameter cylinder and the valve seat, the pressure adjusting spring is arranged between the major-diameter cylinder and the guide sleeve, an overflow hole is formed in the position where the valve body is relative to the valve body wall between the major-diameter cylinder and the valve seat, the valve core is conical, and the valve port of the valve seat is a T-shaped round hole fitted with the aperture of the conical valve core. The utility model has the advantages of long service life, stable work, small noise and the like.
Description
Technical field
The utility model relates to a kind of ultrahigh pressure pressure control valve in ' interior ultrahigh pressure moulding process ' water hydraulic system that ' the cold extrusion shaped machine of metal tee pipe fitting ' upward uses, and specifically is meant to be applicable to the ultrahigh pressure weighing apparatus pressurized overflow valve that carries out the pressure control protection in the high-pressure water hydraulic system.
Background technique
Relief valve is a wirking pressure control unit in the hydraulic system, mainly plays pressure regulation overflow effect and safety protection effect in hydraulic equipment.Wherein pressure regulation overflow effect: in metering pump throttling regulating system, metering pump provides constant flow rate, when system pressure increases, traffic demand is reduced, this moment, relief valve was opened, make the unnecessary flow oil sump tank that overflows, guarantee the relief valve inlet pressure, be i.e. pump discharge pressure constant (valve port is often opened with pressure surge).The safety protection effect: during the system proper functioning, valve closing has only load to surpass the limit of regulation, opens overflow when promptly system pressure surpasses set pressure, carries out overload protection, and system pressure is no longer increased.
But at present, it is working medium that the high pressure pressure adjustment relief valve of existing application in high-pressure hydraulic adopts hydraulic oil more, if and adopt water is working medium, because the viscosity of water is low, and water to get Young's modulus big than mineral oil, " water attack " phenomenon is serious, when causing the work of ultrahigh pressure pressurize relief valve, vibration and noise are very big, and water also can corrode and the cavitation erosion problem bringing of valve port place material, influence product working life.
The model utility content
The purpose of this utility model is in order to overcome the shortcoming and defect that prior art exists, and provides a kind of long service life, working stability, the ultrahigh pressure pressure adjustment relief valve that noise is little.
For achieving the above object, the technical solution of the utility model is, include valve body, and be provided with valve seat in the valve body, spool, Returnning spring, damper rod, pressure adjusting spring, guide sleeve, end cap, adjusting screw rod, the coaxial damper rod front end that is fixed in of described spool, described valve seat is provided with the valve port adaptive with spool, and described valve body is provided with the hydraulic channel that is communicated with valve port, described damper rod is made of the different cylindrical body of the diameter of axially-aligned, wherein front end is the large diameter cylinder that cooperates with the bore seal slippage of valve body, the rear end is the small diameter cylinders body, described Returnning spring is arranged between large diameter cylinder and the valve seat, described pressure adjusting spring is provided with between large diameter cylinder and the guide sleeve, and described valve body is with respect to offering overflow hole on the valve body wall between large diameter cylinder and the valve seat, described spool is conical, and the valve port of described valve seat is the T shape circular hole adaptive with the cone plug aperture.By this setting, the surface of contact of conical spool and valve port becomes the conical surface, minimizing high pressure water straightening connects the direct impact to the spool head end, makes the stepless action of high pressure hydraulic pressure on the conical surface of whole spool, and lifting surface area is big, reduce " water attack " phenomenon, improved the working life of product, in addition, the active force of high pressure hydraulic pressure has been evenly distributed on the conical surface of whole spool, play damping effectively and buffering effect, vibrations and noise when reducing the utility model work.
Further being provided with is that described pressure adjusting spring is a pressure spring.Pressure spring is adopted in this setting, helps accurately controlling the pressure protect to the liquid stream of different pressures.
Further be provided be on the described hydraulic channel also side have and connect manometric pressure gauge connection, and this pressure gauge connection includes the different circular hole post of two ends diameter of coaxial communication, and the diameter of the circular hole post of outer end is bigger than inner circular hole post.By this setting, the pressure gauge connection that adopts two sections different cylindrical holes of diameter to form can carry out ratio to pressure to be dwindled, and protects pressure gauge effectively.
Below in conjunction with specification drawings and specific embodiments the utility model is done further introduction.
Description of drawings
Fig. 1 the utility model embodiment structural representation.
Embodiment
Embodiment of the present utility model as shown in Figure 1, include valve body 1, and be arranged at valve seat 11 in the valve body 1, spool 12, Returnning spring 13, damper rod 14, pressure adjusting spring 15, guide sleeve 16, end cap 17, adjusting screw rod 18, described spool 12 coaxial damper rod 14 front ends that are fixed in, described valve seat 11 is provided with the valve port 111 adaptive with spool 12, and be arranged at the hydraulic channel 19 that is communicated with valve port 111 on the described valve body 1, described damper rod 14 is made of the different cylindrical body of the diameter of axially-aligned, wherein front end is the large diameter cylinder 141 that cooperates with the bore seal slippage of valve body 1, the rear end is a small diameter cylinders body 142, described Returnning spring 13 is arranged between large diameter cylinder 141 and the valve seat 11, described pressure adjusting spring 15 is arranged between large diameter cylinder 141 and the guide sleeve 16, and described valve body 1 is with respect to offering overflow hole 20 on the valve body wall between large diameter cylinder 141 and the valve seat 11, described spool 12 is conical, and the valve port 111 of described valve seat 11 is the T shape circular hole adaptive with the cone plug aperture.The utility model, the surface of contact of conical spool 12 and valve port 111 becomes the conical surface, minimizing high pressure water straightening connects the direct impact to spool 12 head ends, makes the stepless action of high pressure hydraulic pressure on the conical surface of whole spool 12, and lifting surface area is big, reduce " water attack " phenomenon, improved the working life of product, in addition, the active force of high pressure hydraulic pressure has been evenly distributed on the conical surface of whole spool 12, play damping effectively and buffering effect, vibrations and noise when reducing the utility model work.Certain spool described in the utility model can also adopt sphere or ellipsoid structure.Present embodiment, described valve body also can adopt the multistage valve body to combine for the ease of processing, and these all fall into the row of protection of the present utility model.
The described pressure adjusting spring 15 of present embodiment is a pressure spring, adopts pressure spring, helps accurately controlling the pressure protect to the liquid stream of different pressures size.
Go back side on the described hydraulic channel 19 of present embodiment and have connection manometric pressure gauge connection 191 (P mouth); and this pressure gauge connection 191 includes the different circular hole post of two ends diameter of coaxial communication; and the diameter of the circular hole post 1911 of outer end is bigger than inner circular hole post 1912; the pressure gauge connection that so adopts two sections different cylindrical holes of diameter to form can carry out ratio to pressure to be dwindled; the pressure gauge that can adopt range to reduce can be protected pressure gauge in addition effectively.
Claims (3)
1. ultrahigh pressure pressure adjustment relief valve, include valve body, and be arranged at valve seat in the valve body, spool, Returnning spring, damper rod, pressure adjusting spring, guide sleeve, end cap, adjusting screw rod, the coaxial damper rod front end that is fixed in of described spool, described valve seat is provided with the valve port adaptive with spool, and described valve body is provided with the hydraulic channel that is communicated with valve port, described damper rod is made of the different cylindrical body of the diameter of axially-aligned, wherein front end is the large diameter cylinder that cooperates with the bore seal slippage of valve body, the rear end is the small diameter cylinders body, described Returnning spring is arranged between large diameter cylinder and the valve seat, described pressure adjusting spring is arranged between large diameter cylinder and the guide sleeve, and described valve body is with respect to offering overflow hole on the valve body wall between large diameter cylinder and the valve seat, it is characterized in that: described spool is for conical, and the valve port of described valve seat is the T shape circular hole adaptive with the cone plug aperture.
2. ultrahigh pressure pressure adjustment relief valve according to claim 1 is characterized in that: described pressure adjusting spring is a pressure spring.
3. ultrahigh pressure pressure adjustment relief valve according to claim 1 and 2, it is characterized in that: go back side on the hydraulic channel and have the manometric pressure gauge connection of connection, and this pressure gauge connection includes the different circular hole post of two ends diameter of coaxial communication, and the diameter of the circular hole post of outer end is bigger than inner circular hole post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201899052U CN201475451U (en) | 2009-07-28 | 2009-07-28 | Ultrahigh pressure regulating overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201899052U CN201475451U (en) | 2009-07-28 | 2009-07-28 | Ultrahigh pressure regulating overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201475451U true CN201475451U (en) | 2010-05-19 |
Family
ID=42411700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201899052U Expired - Fee Related CN201475451U (en) | 2009-07-28 | 2009-07-28 | Ultrahigh pressure regulating overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201475451U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537444A (en) * | 2011-05-11 | 2012-07-04 | 上海大学 | Miniature front pressure-reducing valve type ultrahigh pressure overflow valve |
| CN103615581A (en) * | 2013-12-04 | 2014-03-05 | 西安飞行自动控制研究所 | Overload protective valve of hydraulic actuator |
| CN109268332A (en) * | 2018-11-15 | 2019-01-25 | 广西柳工机械股份有限公司 | High-low pressure unloading valve and loader hydraulic system |
-
2009
- 2009-07-28 CN CN2009201899052U patent/CN201475451U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537444A (en) * | 2011-05-11 | 2012-07-04 | 上海大学 | Miniature front pressure-reducing valve type ultrahigh pressure overflow valve |
| CN102537444B (en) * | 2011-05-11 | 2013-07-17 | 上海大学 | Miniature front pressure-reducing valve type ultrahigh pressure overflow valve |
| CN103615581A (en) * | 2013-12-04 | 2014-03-05 | 西安飞行自动控制研究所 | Overload protective valve of hydraulic actuator |
| CN109268332A (en) * | 2018-11-15 | 2019-01-25 | 广西柳工机械股份有限公司 | High-low pressure unloading valve and loader hydraulic system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Wenzhou Jiada Machinery Manufacture Co., Ltd. Assignor: Wenzhou Shunerda Pipe Fittings Equipment Co., Ltd. Contract record no.: 2014330000080 Denomination of utility model: Ultrahigh pressure regulating overflow valve Granted publication date: 20100519 License type: Exclusive License Record date: 20140411 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20150728 |
|
| EXPY | Termination of patent right or utility model |