CN205207746U - Ball valve seating structure with dustproof scour prevention mechanism - Google Patents
Ball valve seating structure with dustproof scour prevention mechanism Download PDFInfo
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- CN205207746U CN205207746U CN201521009519.2U CN201521009519U CN205207746U CN 205207746 U CN205207746 U CN 205207746U CN 201521009519 U CN201521009519 U CN 201521009519U CN 205207746 U CN205207746 U CN 205207746U
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Abstract
The utility model relates to a ball valve seating structure with dustproof scour prevention mechanism, the axial contact terminal surface of disk seat and valve body between be provided with the chamber of sliding, the coaxial slidable mounting of intracavity that should slide has an annular to press the cover, the system has a middle section to seal the chamber between the outer lane of the axial one end of annular pressure cover and the axial terminal surface of disk seat, and the sealed intracavity pressure equipment in this middle section has a middle section sealing member, install spring unit between the axial other end of annular pressure cover and the axial terminal surface of valve body, specifically be: the valve body terminal surface system of pressing the cover to correspond in the annular has spring installation hole, and the pressure equipment has a spring in this spring installation hole, and this spring and annular are pressed and is installed a spring protection mechanism between the cover. The utility model discloses can prevent that the medium from washing away the ball seat, guarantee that sealed face is effectively sealed in long -term use, improve ball valve life, can be used to high temperature resistant ball valve sealed firmly for the coal industry, nevertheless not confine the use of the single product of ball valve sealed firmly to.
Description
Technical field
The utility model belongs to valve field, especially a kind of ball valve base structure being provided with preventing dust scouring mechanism.
Background technique
At present, Coal Chemical Industry hard seal ball valve often has the phenomenons such as ball seat sealing surface is washed, seating spring failure mechanisms.The ball valve base structure of prior art is see shown in accompanying drawing 3: ball valve arranges spring behind at valve seat usually, can ensure that the valve seat of ball valve and spheroid can gluing, sealings closely by the compression pretightening force of spring, in addition, at different temperature, the size of ball valve component can change because of expanding with heat and contract with cold, the stuck of valve is caused because of the change of element size in order to prevent, usually also need to arrange spring in the behind of ball seat, the spring of ball valve normally adopts cylindrically coiled spring or belleville spring, the dimensional changes of valve components is compensated by the dilatation of spring, to prevent the stuck of valve.And the valve base aperture of current ball valve adopts straight cylinder type.
Through retrieval, find the public technology of following analogous technical fields:
A kind of ball valve (CN204114215U), particularly a kind of piston type valve seat sealing ball valve.The utility model provides following technological scheme: a kind of piston type valve seat sealing ball valve, include valve body, be located at the medium runner on valve body and the connection chamber with medium runner conducting, spheroid is provided with in connection chamber, valve body is provided with and extends in connection chamber and the valve rod linked with spheroid, valve seat is provided with between medium runner and spheroid, Sealing is provided with between valve seat and spheroid, valve seat includes and compresses end with the sealed end of ball seal and with the elasticity that valve body is conflicted, Sealing is installed on the sealed end place of valve seat, elasticity compresses between end with valve body and is provided with and compresses spring, sealed end and elasticity compress between end and are provided with at least one sealing block, both lateral sides valve seat being positioned at sealing block is respectively equipped with dust preventing component.Adopt technique scheme, provide a kind of good airproof performance, anti-clamping stagnation, the simple piston type valve seat sealing ball valve of structure.
Comparative analysis is known, and published patented technology and known general knowledge all exist larger technology difference compared with present patent application.
Model utility content
The purpose of this utility model is to overcome the deficiencies in the prior art part, there is provided that a kind of structure is simple, ball valve base structure that design science, good stability, sealing are provided with preventing dust scouring mechanism reliably, solve prior art valve stem seal seal with O ring unreliable, the problem that after damaging, maintenance cost is high.
The utility model solves its technical problem and takes following technological scheme to realize:
A kind of ball valve base structure being provided with preventing dust scouring mechanism, comprise valve body, spheroid, valve seat and spring, spheroid is rotatablely equipped with in valve body, with in the valve body of spheroid contact position, be shaped with step-like valve seat annular groove be installed, and in this installation annular groove, a valve seat is installed, the runner of transverse uniaxial is shaped with in valve body and valve seat, the runner for medium circulation is shaped with in spheroid, it is characterized in that: described valve seat contacts between end face with the axis of valve body and is provided with slippage chamber, is coaxially slidably fitted with an annular gland in this slippage chamber; Be shaped with a stage casing Seal cage between the outer ring of axial one end of annular gland and the axial end of valve seat, in this stage casing Seal cage, be pressed with a stage casing Sealing; Between the axial the other end of annular gland and the axial end of valve body, spring assembly is installed; be specially: the valve body end face corresponding at annular gland is shaped with spring mounting hole; be pressed with a spring in this spring mounting hole, a spring protection mechanism is installed between this spring and annular gland.
And; described spring protection mechanism comprises seal joint, spring capping and spring seals; seal joint; seal joint relative spiral-lock coaxial with spring capping; form seal groove in the outer periphery position, joint of seal joint and spring capping and be coaxially installed with spring seals in sealing groove, spring seals and seal joint and spring capping compression fit.
And, the cross section of described stage casing Sealing is trapezoidal, described annular gland becomes reverse slope to arrange with the head end of stage casing Sealing apical grafting, and the head end of described annular gland coordinates with stage casing Sealing apical grafting, coordinates outside the Sealing of described stage casing with valve interior wall slipper seal.
And, the valve seat outside slippage chamber and between the radial surface of contact of valve body coaxial limit mounting have outer side seal circle, the valve seat inside slippage chamber and between the radial surface of contact of valve body coaxial limit mounting have inner seal circle.
And, in the valve seat runner of valve seat and ball valve contact position sealing surface inner circumferential, be shaped with a tubaeform convolution groove.
Advantage of the present utility model and good effect are:
1, the utility model can avoid solid dielectric to deposit in spring chamber, guarantees that spring has elasticity all the time in long-term using process, and it is stuck because of the inefficacy of spring to prevent valve, thus improves ball valve working life.
2, the utility model can prevent medium from washing away ball seat, guarantee sealing surface effective sealing in long-term using process, improve ball valve working life, can be used for Coal Chemical Industry high-temperature wearable hard seal ball valve, but be not limited to the use of hard seal ball valve single product.
Accompanying drawing explanation
Fig. 1 is cross-sectional view of the present utility model;
Fig. 2 is cross-sectional view of the present utility model;
Fig. 3 is prior art structural representation.
Reference character represents:
1 valve body, 2 springs, 3 spring cappings, 4 annular glands, 5 stage casing Sealings, 6 valve seats, 7 outer side seal circles, 8 spheroids, 9 seal joints, 10 spring seals, 11 runners, 12 tubaeform convolution grooves, 13 slippage chambeies, 14 spring buffer chambeies, 15 inner seal circles.
Embodiment
Below in conjunction with accompanying drawing, also by specific embodiment, the utility model is described in further detail, and following examples are descriptive, are not determinate, can not limit protection domain of the present utility model with this.
A kind of ball valve base structure being provided with preventing dust scouring mechanism, comprise valve body 1, spheroid 8, valve seat 6 and spring 2, spheroid is rotatablely equipped with in valve body, with in the valve body of spheroid contact position, be shaped with step-like valve seat annular groove be installed, and in this installation annular groove, a valve seat is installed, the runner 11 of transverse uniaxial is shaped with in valve body and valve seat, the runner for medium circulation is shaped with in spheroid, when rotating sphere makes the passage in spheroid and the runner of valve body coaxial, runner is through, and valve is opening state.
Described valve seat contacts between end face with the axis of valve body and is provided with slippage chamber 13, is coaxially slidably fitted with an annular gland 6 in this slippage chamber; A stage casing Seal cage is shaped with between the outer ring of axial one end of annular gland and the axial end of valve seat, a stage casing Sealing 5 is pressed with in this stage casing Seal cage, the cross section of the Sealing of stage casing shown in the present embodiment is trapezoidal, described annular gland becomes reverse slope to arrange with the head end of stage casing Sealing 5 apical grafting, the head end of described annular gland coordinates with stage casing Sealing apical grafting, coordinates outside the Sealing of described stage casing with valve interior wall slipper seal;
Between the axial the other end of annular gland and the axial end of valve body, spring assembly is installed, be specially: the valve body end face corresponding at annular gland is shaped with spring mounting hole, a spring 2 is pressed with in this spring mounting hole, one spring protection mechanism is installed between this spring and annular gland, this spring protection mechanism comprises seal joint 9, spring capping 3 and spring seals 10, seal joint, seal joint relative spiral-lock coaxial with spring capping, form seal groove in the outer periphery position, joint of seal joint and spring capping and be coaxially installed with spring seals in sealing groove, the outside of spring seals coordinates with the inwall slipper seal of spring mounting hole, spring seals and seal joint and spring capping compression fit, make between seal joint and spring capping, to leave a spring buffer chamber 14.
In order to improve the sealing between valve seat and valve body, valve seat outside slippage chamber and between the radial surface of contact of valve body coaxial limit mounting have outer side seal circle 7, play the effect of impurity in filter medium, valve seat inside slippage chamber and between the radial surface of contact of valve body coaxial limit mounting have inner seal circle 15, play the effect of impurity in filter medium.
Shown in accompanying drawing 2, a tubaeform convolution groove 12 is shaped with in the valve seat runner of valve seat and ball valve contact position sealing surface inner circumferential, when ball valve is in closed condition, medium 10 is formed along spheroid to sealing surface and washes away after impact spheroid, medium in runner along valve base inner wall move formed convolution with runner in the middle part of medium cross, alleviate washing away sealing surface, extend the life-span of valve sealing face.
Although disclose embodiment of the present utility model and accompanying drawing for the purpose of illustration, but it will be appreciated by those skilled in the art that: in the spirit and scope not departing from the utility model and claims, various replacement, change and amendment are all possible, therefore, scope of the present utility model is not limited to the content disclosed in embodiment and accompanying drawing.
Claims (5)
1. one kind is provided with the ball valve base structure of preventing dust scouring mechanism, comprise valve body, spheroid, valve seat and spring, spheroid is rotatablely equipped with in valve body, with in the valve body of spheroid contact position, be shaped with step-like valve seat annular groove be installed, and in this installation annular groove, a valve seat is installed, the runner of transverse uniaxial is shaped with in valve body and valve seat, the runner for medium circulation is shaped with in spheroid, it is characterized in that: described valve seat contacts between end face with the axis of valve body and is provided with slippage chamber, is coaxially slidably fitted with an annular gland in this slippage chamber; Be shaped with a stage casing Seal cage between the outer ring of axial one end of annular gland and the axial end of valve seat, in this stage casing Seal cage, be pressed with a stage casing Sealing; Between the axial the other end of annular gland and the axial end of valve body, spring assembly is installed; be specially: the valve body end face corresponding at annular gland is shaped with spring mounting hole; be pressed with a spring in this spring mounting hole, a spring protection mechanism is installed between this spring and annular gland.
2. the ball valve base structure being provided with preventing dust scouring mechanism according to claim 1; it is characterized in that: described spring protection mechanism comprises seal joint, spring capping and spring seals; seal joint; seal joint relative spiral-lock coaxial with spring capping; form seal groove in the outer periphery position, joint of seal joint and spring capping and be coaxially installed with spring seals in sealing groove, spring seals and seal joint and spring capping compression fit.
3. the ball valve base structure being provided with preventing dust scouring mechanism according to claim 1, it is characterized in that: the cross section of described stage casing Sealing is trapezoidal, described annular gland becomes reverse slope to arrange with the head end of stage casing Sealing apical grafting, the head end of described annular gland coordinates with stage casing Sealing apical grafting, coordinates outside the Sealing of described stage casing with valve interior wall slipper seal.
4. the ball valve base structure being provided with preventing dust scouring mechanism according to claim 1, it is characterized in that: the valve seat outside slippage chamber and between the radial surface of contact of valve body coaxial limit mounting have outer side seal circle, the valve seat inside slippage chamber and between the radial surface of contact of valve body coaxial limit mounting have inner seal circle.
5. the ball valve base structure being provided with preventing dust scouring mechanism according to claim 1, is characterized in that: in the valve seat runner of valve seat and ball valve contact position sealing surface inner circumferential, be shaped with a tubaeform convolution groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521009519.2U CN205207746U (en) | 2015-12-08 | 2015-12-08 | Ball valve seating structure with dustproof scour prevention mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521009519.2U CN205207746U (en) | 2015-12-08 | 2015-12-08 | Ball valve seating structure with dustproof scour prevention mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN205207746U true CN205207746U (en) | 2016-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521009519.2U Active CN205207746U (en) | 2015-12-08 | 2015-12-08 | Ball valve seating structure with dustproof scour prevention mechanism |
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| CN (1) | CN205207746U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108468828A (en) * | 2018-07-03 | 2018-08-31 | 浙江金浦实业有限公司 | High-performance automatically controls lock slag valve |
-
2015
- 2015-12-08 CN CN201521009519.2U patent/CN205207746U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108468828A (en) * | 2018-07-03 | 2018-08-31 | 浙江金浦实业有限公司 | High-performance automatically controls lock slag valve |
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