CN204573293U - With the ball valve of integral support gland - Google Patents
With the ball valve of integral support gland Download PDFInfo
- Publication number
- CN204573293U CN204573293U CN201520061345.8U CN201520061345U CN204573293U CN 204573293 U CN204573293 U CN 204573293U CN 201520061345 U CN201520061345 U CN 201520061345U CN 204573293 U CN204573293 U CN 204573293U
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- Prior art keywords
- valve body
- main valve
- gland
- auxiliary
- seat
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Abstract
The utility model discloses a kind of ball valve with integral support gland, described valve body comprises main valve body and auxiliary valve body, spool is arranged between main valve body and auxiliary valve body, main valve seat and auxiliary-seat is respectively equipped with between spool and main valve body and auxiliary valve body, main valve body is provided with circular groove towards the side of spool, the side of main valve seat is embedded in circular groove, main valve body is provided with the support in inverted L-shaped, control valve rod periphery and be provided with packing groove, the top of filler is provided with gland, gland is provided with the mounting hole for fixing actuator, integrally be fixedly connected with by screw between gland with support.The ball valve body that it efficiently solves prior art easily rotates twisting, affects the problem that the ball seat of the problem of the control accuracy of ball valve and stability and prior art easily produces leakage in plastic deformation generation; The utility model structure is simple, reliable operation, good airproof performance and long service life, has very high use value.
Description
Technical field
The utility model relates to flow control valve technical field, especially relates to a kind of ball valve with integral support gland.
Background technique
Ball valve is developed by stopcock, only needs to use the operation of 90-degree rotation and very little moment of rotation just can close tight.O type ball valve and V-type ball valve two kinds can be divided into.Ball valve optimum makees switch, cut-off valve uses, but ball valve design has become to make it to have throttling and control the use of flow by recent development.The main feature of ball valve is compact structure own, sealing is reliable, structure is simple, easy to maintenance, and sealing surface and sphere are everlasting closed state, not easily by medium erosion, be easy to Operation and maintenance, be applicable to the general work media such as water, solvent, acid and rock gas, but also be applicable to the severe medium of operating conditions, as oxygen, hydrogen peroxide, methane and ethene etc., be widely used in every profession and trade.Ball valve, owing to having the features such as latus rectum is large, switching speed is fast, flow resistance is little, has very large advantage than traditional butterfly valve, gate valve, stopcock, stop valve etc.The valve seat of ball valve adopts polytetrafluoroethylene (PTFE) usually, and this material has enough tensions and compressive strength, and good self lubricity, plasticity and decay resistance, be very suitable as sealing material.Be radial direction is processed several exhaust ports at teflon valve seat during usual use, by extruding force by teflon valve seat press-in valve body, valve cup bottom plane produces local plastic deformation under the effect of impacting force, and realizes sealing with valve body close contact.But there is two problems in the ball seat of prior art, one is that the mode that the locking of flange filler in existing ball valve all adopts single gland to join fastening piece compresses, though this kind of method ensure that the sealing at filler place, but a realistic problem is brought, namely when ball valve needs to install actuator (cylinder or motor drive mechanism etc.), because the volume of cylinder or motor drive mechanism is larger, when ball valve core rotates within the scope of 90 degree, valve body can occur to rotate twisting accordingly, have impact on control accuracy and the stability of ball valve.Two is easily under the effect of the pressure with the valve seat of valve seal produce plastic deformation to valve inner (radial direction), causes the seal failure between the spool of ball valve and valve seat, leaks in producing; Simultaneously ball valve longevity of service spool frequent pivoting friction rear valve base produces certain wearing and tearing, and the extruding force between spool and valve seat declines, sealability declines and easily causes leaking.Publication date is on September 29th, 2010, and publication number is that the patent document of CN101846208 A discloses a kind of valve seat for ball valve, and this valve seat ringwise and comprise the first axial annular end face, the second axial annular end face, inner radial surface and radially-outer surface.Inner radial surface comprises the contact surface contacted with the spheroid as open-shut device, described valve seat has at least one item in following structure characteristic, a. the first axial annular end face is provided with annular projection, this annular projection is between the radial inner end and radial outer end of the first axial annular end face; B. radially-outer surface is formed with the circular groove radially extended internally from radially-outer surface, this circular groove comprises the first wall being positioned at the first axial annular end face side and the second wall being positioned at the second axial annular end face side, ring-shaped skirt is formed between the contact surface contacted with spheroid and the second wall of circular groove of inner radial surface, ring-shaped skirt is formed with penetrating via, the space of the axial both sides of this penetrating via fluid communication ring-shaped skirt; But this valve seat shape of cross section is complicated, processing difficulties, do not solve the rotation twisting problem of valve body and the leakage problem of valve seat in addition yet.
Model utility content
The purpose of this utility model easily rotating twisting for solving the ball valve body of prior art, affect the ball seat of the problem of the control accuracy of ball valve and stability and prior art and easily produce plastic deformation and produce the problem of interior leakage and provide the ball valve with integral support gland of a kind of reliable operation, good airproof performance.
The concrete technological scheme that the utility model solves the problems of the technologies described above employing is, a kind of ball valve with integral support gland, described ball valve comprises main valve body and auxiliary valve body, main valve body is provided with the control valve rod axially vertical with main valve body, the upper end controlling valve rod is connected with Joystick, main valve body and auxiliary valve body are axially spirally connected, spherical valve core is arranged between main valve body and auxiliary valve body, main valve seat and auxiliary-seat is respectively equipped with between spool and main valve body and auxiliary valve body, main valve body is provided with circular groove towards the side of spool, described circular groove cross section is rectangular, side and the spool of main valve seat are close to, the opposite side of main valve seat is embedded in circular groove, main valve body is provided with the support in inverted L-shaped, the control valve rod periphery of upper part of the main valve body is provided with packing groove, stuffing box packing is provided with in packing groove, the top of stuffing box packing is provided with gland, gland is provided with the mounting hole for fixing actuator, integrally be fixedly connected with by screw between gland with support.Gland of the present utility model is integrally fixedly connected with support, after the gland of ball valve and actuator fixedly mount, moving valve can not be with to rotate twisting, ensure that the reliability of ball valve work, improve control accuracy during actuator's action; On the other hand, the main valve seat of main valve body side of the present utility model is embedded in circular groove, such ring channel structures just blocks the plastic deformation of valve seat to valve axis direction, valve seat can only do elasticity axial plastic deformation to spool sphere, thus reach the requirement of tight seal, avoid occurring the seal failure between the spool of ball valve and valve seat and the interior leakage problem produced.In addition, in use, because valve seat can only do axial plastic deformation, form required seal pressure from external sealing surface, substantially prolongs valve valve seat working life, valve leak phenomenon can not be produced, and in process of production, improve conforming product rate.
As preferably, mounting hole is four, and the center line controlling valve rod relative to ball valve is symmetrical arranged.Four symmetrically arranged mounting holes can make ball valve stress balance, thus guarantee that ball valve can not deflect because of unbalance stress.
As preferably, be provided with limiting board between described gland and main valve body, described limiting board is arranged on gland near auxiliary valve body side, and limiting board is provided with spacing hole, described spacing hole and the mounting hole of gland near auxiliary valve body side suitable.Because Bracket setting is in the main valve body side of ball valve, therefore limiting board is set in the auxiliary valve body side of ball valve, the annexation of actuator and ball valve can be fixed further, prevent ball valve from rotating.
As preferably, auxiliary valve body is provided with circular groove towards the side of spool, and described circular groove cross section semicircular in shape, circular groove is provided with circular slanting spring, and the side of oblique spring abuts with auxiliary-seat.After easily there are certain wearing and tearing in valve seat when ball valve longevity of service, the radical elasticity of oblique spring can compensate this wearing and tearing, thus guarantee that the extruding force of main valve seat and spool keeps substantially constant, guarantee that leaking does not appear in ball valve, the working life of the ball valve so just greatly extended.
As preferably, main valve seat and auxiliary-seat all adopt polytetrafluoroethylmaterial material, and described stuffing box packing is teflon seal ring.
The beneficial effects of the utility model are, the ball valve body that it efficiently solves prior art easily rotates twisting, affects the problem that the ball seat of the problem of the control accuracy of ball valve and stability and prior art easily produces leakage in plastic deformation generation; The utility model structure is simple, reliable operation, good airproof performance and long service life, has very high use value.
Accompanying drawing explanation
Fig. 1 is a kind of overall structure schematic diagram of the utility model ball valve;
Fig. 2 is a kind of partial structurtes schematic diagram of the present utility model.
In figure: 1. main valve body, 2. auxiliary valve body, 3. control valve rod, 4. Joystick, 5. spool, 6. main valve seat, 7. auxiliary-seat, 8. circular groove, 9. support, 10. stuffing box packing, 11. glands, 12. mounting holes, 13. screws, 14. limiting boards, 15. oblique springs.
Embodiment
Below by embodiment, and by reference to the accompanying drawings the concrete technological scheme of the utility model is described in further detail.
Embodiment 1
In the embodiment 1 shown in Fig. 1 Fig. 2, a kind of ball valve with integral support gland, described ball valve comprises main valve body 1 and auxiliary valve body 2, main valve body is provided with the control valve rod 3 axially vertical with main valve body, the upper end controlling valve rod is connected with Joystick 4, main valve body and auxiliary valve body are axially spirally connected, spherical valve core 5 is arranged between main valve body and auxiliary valve body, main valve seat 6 and auxiliary-seat 7 is respectively equipped with between spool and main valve body and auxiliary valve body, valve seat and auxiliary-seat all adopt polytetrafluoroethylmaterial material, main valve body is provided with circular groove 8 towards the side of spool, described circular groove cross section is rectangular, side and the spool of main valve seat are close to, the opposite side of main valve seat is embedded in circular groove, main valve body is provided with the support 9 in inverted L-shaped, the control valve rod periphery of upper part of the main valve body is provided with packing groove, stuffing box packing 10 is provided with in packing groove, described stuffing box packing is teflon seal ring, the top of stuffing box packing is provided with gland 11, gland is provided with four mounting holes 12 for fixing actuator, four mounting holes are symmetrical arranged relative to the center line of ball valve control valve rod, integrally be fixedly connected with by screw 13 between gland with support.
Be provided with limiting board 14 between gland and main valve body, described limiting board is arranged on gland near auxiliary valve body side, and limiting board is provided with spacing hole, described spacing hole and the mounting hole of gland near auxiliary valve body side suitable.Auxiliary valve body is provided with circular groove towards the side of spool, and described circular groove cross section semicircular in shape, circular groove is provided with circular slanting spring 15, and the side of oblique spring abuts with auxiliary-seat.
Gland of the present utility model is integrally fixedly connected with support, after the gland of ball valve and actuator fixedly mount, moving valve can not be with to rotate twisting, ensure that the reliability of ball valve work, improve control accuracy during actuator's action; On the other hand, the main valve seat of main valve body side of the present utility model is embedded in circular groove, such ring channel structures just blocks the plastic deformation of valve seat to valve axis direction, valve seat can only do elasticity axial plastic deformation to spool sphere, thus reach the requirement of tight seal, avoid occurring the seal failure between the spool of ball valve and valve seat and the interior leakage problem produced.In addition, after when ball valve longevity of service, certain wearing and tearing easily appear in valve seat, the radical elasticity of oblique spring can compensate this wearing and tearing, thus guarantee that the extruding force of main valve seat and spool keeps substantially constant, guarantee that leaking does not appear in ball valve, the working life of the ball valve so just greatly extended.
Claims (5)
1. the ball valve with integral support gland, it is characterized in that: described ball valve comprises main valve body (1) and auxiliary valve body (2), main valve body is provided with the control valve rod (3) axially vertical with main valve body, the upper end controlling valve rod is connected with Joystick (4), main valve body and auxiliary valve body are axially spirally connected, spherical valve core (5) is arranged between main valve body and auxiliary valve body, main valve seat (6) and auxiliary-seat (7) is respectively equipped with between spool and main valve body and auxiliary valve body, main valve body is provided with circular groove (8) towards the side of spool, described circular groove cross section is rectangular, side and the spool of main valve seat are close to, the opposite side of main valve seat is embedded in circular groove, main valve body is provided with the support (9) in inverted L-shaped, the control valve rod periphery of upper part of the main valve body is provided with packing groove, stuffing box packing (10) is provided with in packing groove, the top of stuffing box packing is provided with gland (11), gland is provided with the mounting hole (12) for fixing actuator, integrally be fixedly connected with by screw (13) between gland with support.
2. the ball valve with integral support gland according to claim 1, is characterized in that: described mounting hole is four, and the center line controlling valve rod relative to ball valve is symmetrical arranged.
3. the ball valve with integral support gland according to claim 2, it is characterized in that: between described gland and main valve body, be provided with limiting board (14), described limiting board is arranged on gland near auxiliary valve body side, limiting board is provided with spacing hole, described spacing hole and the mounting hole of gland near auxiliary valve body side suitable.
4. the ball valve with integral support gland according to claim 1, it is characterized in that: auxiliary valve body is provided with circular groove towards the side of spool, described circular groove cross section semicircular in shape, circular groove is provided with circular slanting spring (15), and the side of oblique spring abuts with auxiliary-seat.
5. the ball valve with integral support gland according to claim 1 or 2 or 3 or 4, it is characterized in that: main valve seat and auxiliary-seat all adopt polytetrafluoroethylmaterial material, described stuffing box packing is teflon seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520061345.8U CN204573293U (en) | 2015-01-29 | 2015-01-29 | With the ball valve of integral support gland |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520061345.8U CN204573293U (en) | 2015-01-29 | 2015-01-29 | With the ball valve of integral support gland |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204573293U true CN204573293U (en) | 2015-08-19 |
Family
ID=53865930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520061345.8U Expired - Fee Related CN204573293U (en) | 2015-01-29 | 2015-01-29 | With the ball valve of integral support gland |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204573293U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465401A (en) * | 2015-12-31 | 2016-04-06 | 宁波丰基特种阀门有限公司 | Ball valve easy to replace valve seat |
-
2015
- 2015-01-29 CN CN201520061345.8U patent/CN204573293U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465401A (en) * | 2015-12-31 | 2016-04-06 | 宁波丰基特种阀门有限公司 | Ball valve easy to replace valve seat |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150819 Termination date: 20160129 |
|
| EXPY | Termination of patent right or utility model |