CN2619101Y - High pressure throttle check valve - Google Patents
High pressure throttle check valve Download PDFInfo
- Publication number
- CN2619101Y CN2619101Y CN 03231777 CN03231777U CN2619101Y CN 2619101 Y CN2619101 Y CN 2619101Y CN 03231777 CN03231777 CN 03231777 CN 03231777 U CN03231777 U CN 03231777U CN 2619101 Y CN2619101 Y CN 2619101Y
- Authority
- CN
- China
- Prior art keywords
- spool
- valve
- valve seat
- intercommunicating pore
- seal ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a high pressure stop valve saving current. The utility model provides a high pressure stop valve saving current which can prevent a main seal ring destroyed expanding to enhancing durability. The high pressure stop valve saving current comprises a valve bar, a valve body, a valve seat and a main piston. The main piston is composed of a balance piston, a valve core, a ring gasket, a main seal ring and an assisted seal ring. A communicating hole is provided on the valve core. The opening of the communicating hole is arranged on the contact face between the valve core and the valve seat, the other opening of the communicating hole is provided on the contact face between the valve core and the assisted seal ring.
Description
Technical field
The utility model relates to a kind of valve, particularly High-pressure Throttle Stop Valve.
Background technique
Chinese patent 94208403.9 discloses a kind of High-pressure Throttle Stop Valve, by valve rod, valve body, valve seat and comprise equalizing piston, poppet shaft, spool, the primary seal circle, auxiliary seal ring, total piston of grommet is formed, grommet radially is provided with intercommunicating pore, spool is axially arranged with intercommunicating pore, high-pressure medium acts on primary seal circle and the auxiliary seal ring by intercommunicating pore, the primary seal circle is closely contacted with valve seat, thereby solved the integrity problem of sealing preferably, but, there is valve opening moment disadvantage because of the excessive and bloated bad primary seal circle of pressure reduction because this valve high-pressure medium directly acts on the primary seal circle by intercommunicating pore.
Summary of the invention
The purpose of this utility model provides a kind of High-pressure Throttle Stop Valve that can prevent bloated bad primary seal circle, to improve its serviceability.
To achieve these goals, the utility model adopts following technical solution: the utility model High-pressure Throttle Stop Valve, comprise valve rod, valve body, valve seat, total piston, this total piston is made up of equalizing piston, spool, grommet, primary seal circle, auxiliary seal ring, spool has intercommunicating pore, one opening of intercommunicating pore is located on the surface of contact of spool and valve seat, and another opening of intercommunicating pore is located on the surface of contact of spool and auxiliary seal ring.
Because in the above-mentioned technical solution, the intercommunicating pore opening of spool is located on the surface of contact of spool and valve seat, high-pressure medium passes through the intercommunicating pore indirectly-acting on the primary seal circle again by the surface of contact slit of spool and valve seat earlier, can reduce pressure reduction effectively, thereby can therefore can not improve the serviceability of valve effectively because of the excessive and bloated bad primary seal circle of pressure reduction in valve opening moment.
The utility model is described in further detail below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is the general structure schematic representation of the utility model High-pressure Throttle Stop Valve.
Fig. 2 is the cooperating structure part enlarged diagram of total piston and valve seat among Fig. 1.
Fig. 3 is the cooperating structure part enlarged diagram of total piston and valve seat in the prior art.
Embodiment
As Fig. 1, shown in Figure 2, the utility model High-pressure Throttle Stop Valve, comprise valve rod 1, valve body 2, valve seat 4, total piston, this total piston is by equalizing piston 3, spool 5, grommet 6, primary seal circle 7, auxiliary seal ring 8 is formed, spool 5 has intercommunicating pore 9, one opening of intercommunicating pore 9 is located on the surface of contact of spool 5 and valve seat 4, another opening of intercommunicating pore 9 is located on the surface of contact of spool 5 and auxiliary seal ring 8, high-pressure medium acts on primary seal circle 7 and the auxiliary seal ring 8 through intercommunicating pore 9 by the surface of contact slit of spool 5 with valve seat 4 again, primary seal circle 7 is closely contacted with valve seat 4, again pass through intercommunicating pore 9 indirectly-actings in primary seal circle 7 on because high-pressure medium is first by the spool 5 and the surface of contact slit of valve seat 4 in valve opening moment, can reduce pressure reduction, simultaneously because the opening of intercommunicating pore 9 is nearer apart from primary seal circle 7 on the surface of contact of spool 5 and valve seat 4, thereby pressure reduction is less, therefore can overcome in the prior art intercommunicating pore from the spool axial aperture in valve opening moment, because high-pressure medium directly acts on the primary seal circle by intercommunicating pore, thereby the disadvantage of the excessive and bloated bad primary seal circle of pressure reduction has improved the serviceability of valve greatly.In order to reduce pressure reduction, the opening of intercommunicating pore 9 on the surface of contact of spool 5 and valve seat 4 can be located near primary seal circle place.In order to improve the reliability of sealing, oblique sealing surface 10 outside can on equalizing piston 3, being provided with, oblique sealing surface 11 in valve seat 4 is provided with, equalizing piston 3 forms sealing with valve seat 4 by outer tiltedly sealing surface 10 and cooperating of interior oblique sealing surface 11, thereby formation two seals, first road by equalizing piston 3 and valve seat 4 by outer tiltedly sealing surface 10 and the hard sealing that forms cooperating of interior oblique sealing surface 11, the soft seal that second road is made of the spool 5, grommet 6, primary seal circle 7, auxiliary seal ring 8 and the valve seat 4 that are contained on the equalizing piston 3.In order to prevent the obstruction of intercommunicating pore 9, can be provided with plural intercommunicating pore 9 on the spool 5, present embodiment is provided with four intercommunicating pores 9.In order to realize the purpose of this utility model better, the intercommunicating pore 9 of spool 5 can be set as by radial section and axial direction part and form, one end opening of radial section is on the surface of contact of spool 5 and valve seat 4, one end UNICOM of the other end of radial section and axial direction part, the other end opening of axial direction part is on the surface of contact of spool 5 and auxiliary seal ring 8, the length of axial direction part is shorter than the length of radial section, certainly the intercommunicating pore 9 of spool 5 also can adopt the form of oblique perforate, as long as an opening of intercommunicating pore 9 is on the surface of contact of spool 5 and valve seat 4, another opening of intercommunicating pore 9 can reach the purpose of this utility model on the surface of contact of spool 5 and auxiliary seal ring 8.
Claims (6)
1, a kind of High-pressure Throttle Stop Valve, comprise valve rod (1), valve body (2), valve seat (4), total piston, this total piston is made up of equalizing piston (3), spool (5), grommet (6), primary seal circle (7), auxiliary seal ring (8), it is characterized in that: spool (5) has intercommunicating pore (9), one opening of intercommunicating pore (9) is located on the surface of contact of spool (5) and valve seat (4), and another opening of intercommunicating pore (9) is located on the surface of contact of spool (5) and auxiliary seal ring (8).
2, High-pressure Throttle Stop Valve according to claim 1 is characterized in that: the opening of intercommunicating pore (9) on the surface of contact of spool (5) and valve seat (4) is located near primary seal circle place.
3, High-pressure Throttle Stop Valve according to claim 1 and 2, it is characterized in that: equalizing piston (3) is provided with outer tiltedly sealing surface (10), oblique sealing surface (11) in valve seat (4) is provided with, equalizing piston (3) forms sealing with valve seat (4) by cooperating of outer tiltedly sealing surface (10) and interior oblique sealing surface (11).
4, High-pressure Throttle Stop Valve according to claim 1 and 2 is characterized in that: spool (5) is provided with four intercommunicating pores (9).
5, High-pressure Throttle Stop Valve according to claim 3 is characterized in that: spool (5) is provided with four intercommunicating pores (9).
6, High-pressure Throttle Stop Valve according to claim 1 and 2, it is characterized in that: intercommunicating pore (9) is made up of radial section and axial direction part, one end opening of radial section is on the surface of contact of spool (5) and valve seat (4), one end UNICOM of the other end of radial section and axial direction part, the other end opening of axial direction part is on the surface of contact of spool (5) and auxiliary seal ring (8), and the length of axial direction part is shorter than the length of radial section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03231777 CN2619101Y (en) | 2003-05-28 | 2003-05-28 | High pressure throttle check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03231777 CN2619101Y (en) | 2003-05-28 | 2003-05-28 | High pressure throttle check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2619101Y true CN2619101Y (en) | 2004-06-02 |
Family
ID=34248357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03231777 Expired - Lifetime CN2619101Y (en) | 2003-05-28 | 2003-05-28 | High pressure throttle check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2619101Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511651A (en) * | 2013-09-26 | 2014-01-15 | 余金海 | Multistage grinding wheel type regulating valve |
-
2003
- 2003-05-28 CN CN 03231777 patent/CN2619101Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511651A (en) * | 2013-09-26 | 2014-01-15 | 余金海 | Multistage grinding wheel type regulating valve |
| CN103511651B (en) * | 2013-09-26 | 2015-12-02 | 浙江金龙自控设备有限公司 | Multistage grinding-wheel type regulating valve |
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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: Zhejiang Jinlong Auto Control Equipment Co., Ltd. Assignor: Yu Jinhai Contract fulfillment period: 2006.5.10 to 2013.5.27 Contract record no.: 2008330002508 Denomination of utility model: Flushing-resistant high-pressure throttle stop valve Granted publication date: 20040602 License type: Exclusive license Record date: 20081203 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2006.5.10 TO 2013.5.27; CHANGE OF CONTRACT Name of requester: ZHEJIANG PROVINCE JINLONG SELF -CONTROLLED EQUIPME Effective date: 20081203 |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130528 Granted publication date: 20040602 |