CN2846929Y - Anti-adhesive type electric reversing four-way valve - Google Patents
Anti-adhesive type electric reversing four-way valve Download PDFInfo
- Publication number
- CN2846929Y CN2846929Y CN 200520116819 CN200520116819U CN2846929Y CN 2846929 Y CN2846929 Y CN 2846929Y CN 200520116819 CN200520116819 CN 200520116819 CN 200520116819 U CN200520116819 U CN 200520116819U CN 2846929 Y CN2846929 Y CN 2846929Y
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- valve
- valve seat
- way valve
- expansion joint
- type electric
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Abstract
The utility model relates to a special valve technique for a medium-adhesive oil, particularly to an anti-adhesive type electric reversing four-way valve which is characterized in that a multi-layer U-shaped corrugated expansion joint is embedded in each valve base, one end of the corrugated expansion joints is transitionally connected with a valve base sealing ring, the other end is supported on an end-face flange, the outer circumferences of the U-shaped corrugated expansion joints are provided with flow guiding barrels, and then steel floating compensating valve base is formed. The aim of the utility model is to design an anti-adhesive type electric reversing four-way valve with small reversing resistance, easy reversal and long-term and reliable sealing performance. Compared with the prior art, the utility model has the advantages of smooth valve reversal, good sealing effect, long service life, etc.
Description
Technical field
The utility model relates to the sticking oily special valve technology of medium, the electronic commutation four-way valve of particularly a kind of anti-sticking type.
Background technique
State Intellectual Property Office's net discloses a kind of coking four way ball valve (CN03233033.2) on March 24th, 2004, the valve base sealing device of this ball valve adopts spring to compensate removable valve base sealing structure, and is provided with the steam damping device that prevents that tar from invading in structure.Its deficiency: removable valve seat connects sealing with different assemblying, valve operation a period of time, and in the alternate load change procedure, each assembly resistance to deformation, its size and dimension changes.The particularly wearing and tearing of filler, lax can change the interaction force between the sealing pair, cause seal failure.By at the valve seat outlet end spring compensation being installed, along with the prolongation of time and the influence of high-temperature oil gas corrosion, spring constant changes, and elasticity reduces, the elastic force deficiency.The valve commutation time causes spring pretension decrement deficiency, and the seal pressure that makes the spool and the contact surface of valve seat is inhomogeneous and leak, and influences the effect and the life-span of valve.In addition, because the spring in the removable valve seat mainly plays auxiliary compensating action, generally, be hard sealing between seal holder ring and the spheroid, along with the repeatedly open/close commutation extruding of valve, the residual spool residue that is bonded at becomes more and more firmer, commutation resistance to spool increases gradually, cause the valve commutation heavy day by day, finally can't commutate, even may damage drive unit.
Summary of the invention
The purpose of this utility model is that a kind of commutation resistance of design is little, light, the electronic commutation four-way valve of sealability anti-sticking type reliably and with long-term.
In order to achieve the above object, the utility model adopts following technical solution: the electronic commutation four-way valve of a kind of anti-sticking type, comprise valve rod, stuffing box, displacement spheroid, valve body and valve seat, it is characterized in that being embedded in multilayer U-shaped bellows expansion joint at each valve seat, the one end is connected with the valve seat insert transition, the other end is bearing on the end face flange, and in U-shaped bellows expansion joint outside guide shell is set, and constitutes steel floating compensation valve seat.Because U-shaped bellows expansion joint scalability is strong, become between valve seat insert and the spheroid and be rigidly connected to being flexible coupling, spheroid can freely commutate in seal holder ring and rotate, the commutation resistance is little, light, the radial compaction power of respectively enclosing of U-shaped bellows expansion joint is evenly distributed simultaneously, it is little that elasticity coefficient is influenced by peripheral temperature, so its sealability reliably and with long-term.
Description of drawings
Below in conjunction with drawings and Examples the utility model is described in further detail.
Fig. 1 is the structural front view of present embodiment.
Fig. 2 is the amplification assumption diagram of steel floating compensation valve seat.
Embodiment
As shown in Figure 1, present embodiment comprises valve rod (14), stuffing box (12), displacement spheroid (8), whole valve body (1) and three steel floating compensation valve seats.As shown in Figure 2, described steel floating compensation valve seat comprises multilayer U-shaped bellows expansion joint (4), valve seat insert (6), guide shell (5), strengthens the collar (2), multilayer U-shaped bellows expansion joint (4) one ends are connected with valve seat insert (6) transition, the other end is bearing on the end face flange (3) by strengthening the collar (2), and guide shell (5) is located at U-shaped bellows expansion joint (4) outside.Inside and outside and displacement spheroid (8), stuffing box (12) are located to be provided with respectively tangential high temperature and are urged cleaning bottom of hole (2), (10), (11), (13) at the U-shaped bellows expansion joint of each steel floating compensation valve seat.
Displacement spheroid (8) can commutation rotation in seal holder ring freely by the scalability of U-shaped bellows expansion joint.Spheroid scrapes in rotary course and be detained dirt down on spherome surface, and high temperature is urged under the synchronous effect of sweeping function throughout, stoped sticking oil to infiltrate the junction of spheroid and seal holder ring, the limit is urged playing a minor role and is scraped dirt when realizing spheroid rotation commutation, the reliability that has sealed when having guaranteed valve closing, simultaneously, improve the multi-way valve commutation greatly steadily, prolonged usability.
In sum, the utility model compared with prior art has the following advantages:
1, owing to be provided with guide shell in U-shaped bellows expansion joint outside, reduces because of viscous oil Poor fluidity and the vibration of the bellows that causes, the loss of reducing friction is simultaneously equalled media flow Surely.
2, steel floating compensation valve seat when work to be to use in groups, forms soft (valve seat) and The linear sealing kinematic pair of hard sphere body, pretightning force are greater than specific pressure on the sealing surface, and sealing is easily real Existing.
3, owing to bellows is inside and outside entering of vapor stream arranged, reduced the bellows true temperature, make bellows be difficult for producing thermal distortion.Simultaneously, can assemble pressure when closing and seal, further improve sealing effect.
When 4, compressive deformation generation flexural stress reached surrender when bellows is worked, bellows was not that whole cross section all enters surrender, but two end surfaces begin surrender, middle face still is in elastic state, do not produce concentrated stress, can continue to bear pressure, solved the leakage that slipper seal causes.
Claims (2)
1, the electronic commutation four-way valve of a kind of anti-sticking type, comprise valve rod (14), stuffing box (12), displacement spheroid (8), valve body (1) and valve seat, it is characterized in that being embedded in multilayer U-shaped bellows expansion joint (4) at each valve seat, the one end is connected with valve seat insert (6) transition, the other end is bearing on the end face flange (3), and guide shell (5) is set in U-shaped bellows expansion joint (4) outside, constitute steel floating compensation valve seat.
2, the electronic commutation four-way valve of anti-sticking type according to claim 1 is characterized in that being respectively equipped with tangential high temperature in U-shaped bellows expansion joint (4) medial and lateral of steel floating compensation valve seat urges cleaning bottom of hole (7), (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520116819 CN2846929Y (en) | 2005-11-28 | 2005-11-28 | Anti-adhesive type electric reversing four-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520116819 CN2846929Y (en) | 2005-11-28 | 2005-11-28 | Anti-adhesive type electric reversing four-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2846929Y true CN2846929Y (en) | 2006-12-13 |
Family
ID=37512353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520116819 Expired - Lifetime CN2846929Y (en) | 2005-11-28 | 2005-11-28 | Anti-adhesive type electric reversing four-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2846929Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840359A (en) * | 2012-08-17 | 2012-12-26 | 浙江超达阀门股份有限公司 | Ball valve used for high-temperature easily-coking medium |
| CN102840363A (en) * | 2012-08-17 | 2012-12-26 | 浙江超达阀门股份有限公司 | Four-way ball valve used for high-temperature easily-coking medium |
| CN103375604A (en) * | 2013-07-23 | 2013-10-30 | 浙江石化阀门有限公司 | Superhigh temperature rigidity seal ball valve |
| CN105570486A (en) * | 2016-03-01 | 2016-05-11 | 江苏神通阀门股份有限公司 | Ball valve sealed by using corrugated pipe |
-
2005
- 2005-11-28 CN CN 200520116819 patent/CN2846929Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840359A (en) * | 2012-08-17 | 2012-12-26 | 浙江超达阀门股份有限公司 | Ball valve used for high-temperature easily-coking medium |
| CN102840363A (en) * | 2012-08-17 | 2012-12-26 | 浙江超达阀门股份有限公司 | Four-way ball valve used for high-temperature easily-coking medium |
| CN103375604A (en) * | 2013-07-23 | 2013-10-30 | 浙江石化阀门有限公司 | Superhigh temperature rigidity seal ball valve |
| CN103375604B (en) * | 2013-07-23 | 2015-09-16 | 浙江石化阀门有限公司 | Superhigh temperature rigidity seal ball valve |
| CN105570486A (en) * | 2016-03-01 | 2016-05-11 | 江苏神通阀门股份有限公司 | Ball valve sealed by using corrugated pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20061213 |
|
| EXPY | Termination of patent right or utility model |