CN203421202U - Balance type adjusting ball valve - Google Patents
Balance type adjusting ball valve Download PDFInfo
- Publication number
- CN203421202U CN203421202U CN201320429142.0U CN201320429142U CN203421202U CN 203421202 U CN203421202 U CN 203421202U CN 201320429142 U CN201320429142 U CN 201320429142U CN 203421202 U CN203421202 U CN 203421202U
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- CN
- China
- Prior art keywords
- valve rod
- spheroid
- driven valve
- supporting component
- ball valve
- 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 relates to a balance type adjusting ball valve. A driving valve rod and a sphere are fixedly connected in a conical profile type, and a driven valve rod is connected with the sphere through a fixing assembly. The fixing assembly comprises a cylindrical pin, a set screw, two pin holes and an inclined hole groove, wherein the two pin holes are symmetrically formed in the driven valve rod with the axis of the driven valve rod as the symmetry axis, and the inclined hole groove is formed in the sphere, one end of the set screw extends into the driven valve rod through the end of the driven valve rod, the other end of the set screw is a conical face, and the cylindrical pin is arranged in the pin holes. An axial supporting assembly comprises a main supporting assembly and an auxiliary supporting assembly, wherein the main supporting assembly is arranged between the driving valve rod, the sphere and a valve body, and the auxiliary supporting assembly is arranged between the driven valve rod, the sphere and the valve body. The balance type adjusting ball valve solves the technical problem that an existing ball valve supporting structure cannot meet the requirements for large friction and bearing capacity and has the advantages of being high in connecting accuracy and high in bearing capacity.
Description
Technical field
The utility model relates to balanced type and regulates ball valve.
Background technique
Regulate ball valve conventionally to adopt fulcrum ball structure.The spheroid of small dimension ball valve and actuate valve stem can be processed into integrative-structure, and adjusting function is good, but manufacturability is poor.Larger specification regulates in the fulcrum ball structure of ball valve, conventionally adopt the valve rod shaft shoulder to support spheroid or directly by sphere supports on valve body, spheroid is on-fixed with actuate valve stem and is connected, can only transmitting torque, such as spline joint, flat key connection etc.There is certain gap in on-fixed connection, can increase the mechanical clearance driving in transfer chain, reduces the degree of regulation that regulates ball valve.In addition, it is concentrated larger that conventional on-fixed connects stress, and transmitting same torque needs larger physical dimension.
At ball valve, close or not under full-gear, medium differential pressure masterpiece before and after valve seat is used on the radial support of valve rod, this radial support adopts PTFE axle sleeve, metal base solid lubricative axle sleeve and polymer axle sleeve conventionally, there is the defects such as bearing capacity is not high, friction factor is large in it, increase the driving torque that regulates ball valve, limited maximum permission operating pressure differential.
In current supporting structure, actuate valve stem can be subject to axial pressure medium effect, so actuate valve stem will arrange axially mounting, conventionally adopt the direct spacing supporting of the shaft shoulder, frictional force is larger, has increased the driving torque of ball valve, or adopt PTFE pad to carry out axially mounting, but bearing value is less.
Summary of the invention
In order to solve in existing ball valve supporting structure, cannot meet the technical problem that frictional force is large, bearing capacity is large simultaneously, the utility model provides a kind of balanced type to regulate ball valve, overcome the deficiency of existing ball for ball valve supporting structure, have advantages of that the precision of connection is high, bearing capacity is strong.
Technical solution of the present utility model is:
Regulate a ball valve, its feature part is: comprise valve body, spheroid, actuate valve stem, driven valve rod, end cap, axially support assembly, fixing-assembly and axial limiting assembly;
Described actuate valve stem 3 adopts conical profile to be fixedly connected with spheroid 1, and described driven valve rod is connected by fixing-assembly with spheroid,
Described fixing-assembly comprises straight pin 8, Cock screw 12, take two pin-and-holes on symmetry axis is symmetricly set on driven valve rod of the axis of driven valve rod and be arranged on the inclined hole groove 1A on spheroid, the center line of described pin-and-hole is vertical with the axis of driven valve rod, one end of described Cock screw 12 enters driven valve rod from the termination of driven valve rod, the other end of Cock screw 12 is conical surface 12A, described straight pin 8 is placed in pin-and-hole, one end of described straight pin 8 acts on the conical surface 12A of Cock screw 12, and the other end stretches in the inclined hole groove 1A on spheroid 1;
Described axial limiting assembly comprises two spacing semi-rings 13, is arranged on the groove in actuate valve stem and is arranged on the shoulder on spheroid, and the interior semi-ring of described spacing semi-ring 13 is positioned at groove, and the outer semi-ring of described spacing semi-ring 13 is supported on shoulder;
Described axially support assembly comprises main supporting component and from supporting component, described main supporting component between actuate valve stem, spheroid and valve body, described from supporting component between driven valve rod, spheroid and valve body.
Above-mentioned main supporting component comprises support ring 11, selflubricating pad 6 and the self lubricating fabric axle sleeve 5 being sleeved on successively in actuate valve stem, and the other end of described supporting ring 11 is supported on spheroid, and the other end of described self lubricating fabric axle sleeve 5 is supported on end cap;
Described identical with main supporting component structure from supporting component, but be positioned at driven valve rod one end.
Above-mentioned main supporting component also comprises adjusts pad 7, and described adjustment pad 7 is between end cap and self lubricating fabric axle sleeve 5.
The gradient of above-mentioned inclined hole groove is 50 °-70 °; The angle of described conical surface 12A is 30 °-45 °.
Between above-mentioned actuate valve stem and end cap, be provided with the gland packing box that is filled with stuffing box packing, between described driven valve rod and end cap, be provided with the gland packing box that is filled with stuffing box packing.
The utility model compared with prior art tool has the following advantages:
1, because valve rod radial support adopts the self lubricating fabric axle that bearing capacity is strong, friction factor is little, axially mounting adopts the little selflubricating pad of friction factor, and club assembly adopts balance type structure, so sphere supports structure of the present utility model can reduce the friction torque of ball valve effectively, make ball valve there is larger bearing capacity and allow to turn-off pressure reduction.
2, the utility model is fixedly connected with because actuate valve stem and spheroid adopt, and transmitting torque is large, reduced mechanical connection idle running, improved the degree of regulation that regulates ball valve.
3, the utility model is adjusted the quantity of pad by change, can align preferably in spheroid and sealing surface of seat center, can improve valve base sealing and the adjusting function stability of ball valve.
4, the utility model stuffing box is arranged on end cap, and filler can mount and dismount with end cap, maintains easily filler.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the partial enlarged view of Fig. 1;
Fig. 3 is that the A of Fig. 2 is to partial view;
Fig. 4 is the B-B sectional view of Fig. 2.
Embodiment
As Figure 1-4, a kind of sphere supports structure of ball valve, comprises valve body 2, spheroid 1, actuate valve stem 3, driven valve rod 4, end cap 9, axially support assembly, fixing-assembly and axial limiting assembly;
Axial limiting assembly comprises two spacing semi-rings 13, is arranged on the groove in actuate valve stem and is arranged on the shoulder on spheroid, and the interior semi-ring of spacing semi-ring 13 is positioned at groove, and the outer semi-ring of spacing semi-ring 13 is supported on shoulder;
Axially support assembly refers to by both ends of the surface, support ring 11, selflubricating pad 6, the self lubricating fabric axle sleeve 5(of spheroid 1 patent specification that the patent No. is ZL201120549775.6), adjust pad 7, end cap 9 is spacing with valve body 2, and by increasing or reduce to adjust the quantity of pad 7, to adjust the aliging of sealing surface center of spheroid 1 and valve seat 10.
The stuffing box of the valve stem seal of actuate valve stem 3 and driven valve rod 4 is arranged on end cap 9, and end cap 9 is used fastening piece to be connected with valve body 2.Packing seal element, with end cap 9 installation and removal, facilitates filler regular maintenance.
Claims (5)
1. balanced type regulates a ball valve, it is characterized in that: comprise valve body, spheroid, actuate valve stem, driven valve rod, end cap, axially support assembly, fixing-assembly and axial limiting assembly, described actuate valve stem (3) adopts conical profile to be fixedly connected with spheroid (1), described driven valve rod is connected by fixing-assembly with spheroid, described fixing-assembly comprises straight pin (8), Cock screw (12), take two pin-and-holes on symmetry axis is symmetricly set on driven valve rod of the axis of driven valve rod and be arranged on the inclined hole groove (1A) on spheroid, the center line of described pin-and-hole is vertical with the axis of driven valve rod, one end of described Cock screw (12) enters driven valve rod from the termination of driven valve rod, the other end of described Cock screw (12) is the conical surface (12A), described straight pin (8) is placed in pin-and-hole, one end of described straight pin (8) acts on the conical surface (12A) of Cock screw (12), the other end stretches in the inclined hole groove (1A) on spheroid (1), described axial limiting assembly comprises two spacing semi-rings (13), is arranged on the groove in actuate valve stem and is arranged on the shoulder on spheroid, the interior semi-ring of described spacing semi-ring (13) is positioned at groove, and the outer semi-ring of described spacing semi-ring (13) is supported on shoulder, described axially support assembly comprises main supporting component and from supporting component, described main supporting component between actuate valve stem, spheroid and valve body, described from supporting component between driven valve rod, spheroid and valve body.
2. balanced type according to claim 1 regulates ball valve, it is characterized in that: described main supporting component comprises support ring (11), selflubricating pad (6) and the self lubricating fabric axle sleeve (5) being sleeved on successively in actuate valve stem, the other end of described supporting ring (11) is supported on spheroid, and the other end of described self lubricating fabric axle sleeve (5) is supported on end cap; Described identical with main supporting component structure from supporting component, but be positioned at driven valve rod one end.
3. balanced type according to claim 2 regulates ball valve, it is characterized in that: described main supporting component also comprises adjusts pad (7), and described adjustment pad (7) is positioned between end cap and self lubricating fabric axle sleeve (5).
4. according to the balanced type described in claim 1 or 2 or 3, regulate ball valve, it is characterized in that: the gradient of described inclined hole groove is 50 °-70 °; The angle of the described conical surface (12A) is 30 °-45 °.
5. balanced type according to claim 4 regulates ball valve, it is characterized in that: between described actuate valve stem and end cap, be provided with the gland packing box that is filled with stuffing box packing, between described driven valve rod and end cap, be provided with the gland packing box that is filled with stuffing box packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320429142.0U CN203421202U (en) | 2013-07-18 | 2013-07-18 | Balance type adjusting ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320429142.0U CN203421202U (en) | 2013-07-18 | 2013-07-18 | Balance type adjusting ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203421202U true CN203421202U (en) | 2014-02-05 |
Family
ID=50020301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320429142.0U Expired - Lifetime CN203421202U (en) | 2013-07-18 | 2013-07-18 | Balance type adjusting ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203421202U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106065884A (en) * | 2016-08-19 | 2016-11-02 | 龙工（上海）精工液压有限公司 | Effectively reduce the structure of foot valve fore-set abrasion |
-
2013
- 2013-07-18 CN CN201320429142.0U patent/CN203421202U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106065884A (en) * | 2016-08-19 | 2016-11-02 | 龙工（上海）精工液压有限公司 | Effectively reduce the structure of foot valve fore-set abrasion |
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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: 20140205 |
|
| CX01 | Expiry of patent term | ||
| CU01 | Correction of utility model |
Correction item: Termination upon expiration of patent Correct: Revocation of Patent Expiration and Termination False: Expiration and Termination of 39 Volume 3102 Patent on August 4, 2023 Number: 31-02 Volume: 39 |
|
| CU01 | Correction of utility model |