CN210461726U - Center line butterfly valve plate assembly and center line butterfly valve - Google Patents
Center line butterfly valve plate assembly and center line butterfly valve Download PDFInfo
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- CN210461726U CN210461726U CN201921568694.3U CN201921568694U CN210461726U CN 210461726 U CN210461726 U CN 210461726U CN 201921568694 U CN201921568694 U CN 201921568694U CN 210461726 U CN210461726 U CN 210461726U
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Abstract
The utility model discloses a valve plate component of a center line butterfly valve, belonging to the technical field of valves, comprising a valve plate, a sealing component and a sealing component mounting seat positioned on the outer circumference of a valve plate main body; the upper end surface and the lower end surface of the valve shaft mounting sleeve are provided with annular sealing grooves; a main sealing groove communicated with the annular sealing groove is formed in the center of the outer circumferential surface of the mounting seat of the ferrule type sealing component; sealing members are sleeved in the annular sealing groove and the main sealing groove; the utility model relates to a sealing member includes upper end shaft hole sealing ring and the lower extreme shaft hole sealing ring of a body structure and connects upper end shaft hole sealing ring and lower extreme shaft hole sealing ring to be symmetrical arrangement's arc main seal strip, the utility model relates to a central line butterfly valve with above-mentioned valve plate subassembly. The utility model discloses improve the seal structure of central line class valve, pack into the valve plate of taking the slot through cover ring formula sealing member in, the installation is swift, is convenient for change and maintenance, reduces valve plate and valve body seal clearance simultaneously, improves valve sealing performance, reduces the valve moment of torsion, prolongs the life of butterfly valve.
Description
Technical Field
The utility model belongs to the technical field of the valve, especially, relate to a central line butterfly valve plate subassembly and central line butterfly valve.
Background
As is well known, a center line butterfly valve is a component for switching on and off and controlling flow of a pipeline system, and has been widely used in many fields such as petroleum, chemical engineering, metallurgy, and hydropower. The sealing form of the center line butterfly valve mostly adopts a rubber lining type sealing structure, and the sealing material is rubber, polytetrafluoroethylene and the like. The traditional center line butterfly valve is generally divided into two types according to the position of a sealing material, wherein one type is that the interior of a valve body is lined with rubber to realize sealing, and the other type is that an elastic sealing layer is coated on a valve plate to realize sealing;
the lining rubber in the first valve body is divided into two types, 1, a rubber sleeve manufactured and molded by a mold is arranged in the valve body and is generally called as a soft backrest structure; the rubber lining of the valve can be replaced if damaged; 2. the rubber is directly adhered to a metal valve body for vulcanization, generally called as a hard backrest structure, and the rubber lining of the valve cannot be replaced if damaged, but only the whole valve can be replaced. The existing butt-clamping connection type center line butterfly valve has a soft backrest structure and a hard backrest structure, and the flange connection type center line butterfly valve generally adopts the hard backrest structure. Because flange joint formula valve weight is big, often cause the damage of lining glue layer when handling after the vulcanization.
The second type is that an elastic sealing layer is coated on the valve plate body to realize sealing; shaft hole sealing ring lips are respectively formed on two end faces of the valve plate body; when the valve plate with the structure is opened and closed, the elastic sealing layer corresponding to the sealing ring surface can be extruded with the valve body channel, and the elastic sealing layer generates large deformation without releasing space, so that the friction between the elastic sealing layer and the valve body channel is increased, the opening and closing torque is large, and the service life of the butterfly valve is also shortened.
Therefore, there is a need to develop a center line butterfly valve plate assembly and a center line butterfly valve with small opening and closing torque, good sealing effect, convenient replacement and reduced use cost.
Disclosure of Invention
Problem to prior art existence, the utility model provides a central line butterfly valve plate subassembly and central line butterfly valve that the moment of torsion of opening and close is little, sealed effectual, change convenience, reduction use cost.
The utility model discloses a realize like this, a central line butterfly valve plate subassembly, including valve plate and sealing member, the center of valve plate is provided with the valve shaft installation cover that link up, uses the valve shaft installation cover as the disc-type valve plate main part of center, and the thickness of valve plate main part is outwards reduced gradually by the outer circumference of valve shaft installation cover, its characterized in that still includes the sealing member mount pad that is located the outer circumference of valve plate main part; the thickness of the sealing component mounting seat is larger than that of the outer edge of the valve plate main body; annular sealing grooves are formed in the upper end chord surface and the lower end chord surface of the valve shaft mounting sleeve; a main sealing groove communicated with the annular sealing groove is formed in the center of the outer circumferential surface of the sealing member mounting seat; sealing members are sleeved in the annular sealing groove and the main sealing groove; the sealing component adopts a ring type structure and comprises an upper end shaft hole sealing ring and a lower end shaft hole sealing ring which are of an integrated structure, and arc-shaped main sealing strips which are symmetrically arranged and are connected with the upper end shaft hole sealing ring and the lower end shaft hole sealing ring, wherein the upper end shaft hole sealing ring, the lower end shaft hole sealing ring and the arc-shaped main sealing strip-shaped complete ring type structure with symmetrical two sides are adopted; the upper end shaft hole sealing ring and the lower end shaft hole sealing ring are respectively sleeved in the annular sealing grooves on the upper end surface and the lower end surface of the valve shaft mounting sleeve; the two arc-shaped main sealing strips are sleeved in the main sealing groove on the outer circumferential surface of the sealing component mounting seat.
In the above technical solution, preferably, the cross section of the main seal groove is in a T-shaped structure; the shape of the arc-shaped main sealing strip matched with the main sealing groove is matched with that of the sealing groove; the arc-shaped main sealing strip comprises an installation part and a sealing part, and the sealing part is of an arc-shaped structure.
In the above technical scheme, preferably, the upper end part of the upper end shaft hole sealing ring and the lower end part of the lower end shaft hole sealing ring are provided with conical sealing surfaces matched with the valve shaft mounting hole on the valve seat of the center line butterfly valve.
The utility model also discloses a center line butterfly valve, which comprises a valve body, an upper shaft seat arranged above the middle part of the valve body, and a lower shaft seat arranged below the middle part of the valve body; the valve plate is arranged in the valve body, the valve plate is provided with an upper valve shaft, the lower end of the valve plate is provided with a lower valve shaft, the upper valve shaft is arranged in an upper shaft seat through a supporting shaft sleeve, and the lower valve shaft is arranged in a lower shaft seat through a supporting shaft sleeve; the valve is characterized in that an annular sealing seat is arranged in the middle of the inner wall of the valve body, and sealing transition inclined planes are arranged on two sides of the annular sealing seat; the valve plate adopts the valve plate assembly.
The utility model has the advantages and technological effect: because above-mentioned technical scheme is adopted in the utility model, add the sealing member mount pad at the outer periphery of valve plate promptly, the suit sealing member has good anti-drop characteristic on the sealing member mount pad, and when the valve plate rotation broke away from the valve body, the sealing member can not drop. When the valve plate is closed, the sealing strip of main sealing strip and the inside intermediate position of valve body closely cooperates and realizes sealedly, and the sealed of main sealing strip on sealed in-process valve plate is out of shape when pipeline pressure rises, takes place the extrusion with the sealing strip of valve body, realizes self sealss effect to the friction, reduce and open and close the moment of torsion, the sealing washer at both ends is towards the direction extrusion deformation of valve shaft mounting hole simultaneously, and then has realized the sealed of valve shaft department, the utility model discloses the resistance of the stress deformation who produces when closing the valve converts the power that the valve shaft is sealed into, greatly reduced opens and close the moment of torsion, also improved the sealed effect of valve shaft simultaneously, the life of extension butterfly valve. In addition, compared with the prior art, the valve plate sealing structure is convenient to maintain, the initial sealing effect can be achieved only by replacing a new sealing component after the valve plate is disassembled, and the maintenance cost is greatly reduced.
Drawings
FIG. 1 is a schematic structural view of a valve plate assembly of a center line butterfly valve according to the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a schematic perspective view of a valve plate assembly of a center line butterfly valve;
FIG. 4 is a schematic diagram of the structure of the valve plate of the present invention;
FIG. 5 is a cross-sectional view B-B of FIG. 4;
FIG. 6 is a perspective view of a valve plate;
FIG. 7 is a schematic view of a seal member construction;
FIG. 8 is a cross-sectional view taken along line C-C of the drawing;
FIG. 9 is a perspective view of the sealing member;
FIG. 10 is a schematic view of a center line butterfly valve configuration;
FIG. 11 is a schematic perspective view of a center line butterfly valve;
fig. 12 is a schematic view of the valve body structure.
In the figure, 1, a valve shaft mounting sleeve; 2. a valve plate main body; 3. a sealing member mount; 3-1, an annular sealing groove; 3-2, a main seal groove; 4. a sealing member; 4-1, sealing ring of shaft hole at upper end; 4-2, a shaft hole sealing ring at the lower end; 4-3, arc main sealing strips; 4-30 parts of mounting parts; 4-31, sealing part; 5. a valve body; 5-1, an upper shaft base; 5-2, a lower shaft seat; 5-3, an annular sealing seat; 5-4, sealing the transition inclined plane; 6. an upper valve shaft; 7. a lower valve shaft.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following embodiments and related drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 9, a valve plate assembly of a center line butterfly valve includes a valve plate and a sealing member, wherein a valve shaft mounting sleeve 1 is disposed at the center of the valve plate, the valve shaft mounting sleeve is a circular plate type valve plate main body 2 having a center, the thickness of the valve plate main body is gradually reduced from the outer circumference of the valve shaft mounting sleeve to the outside, and the valve plate assembly further includes a sealing member mounting seat 3 located at the outer circumference of the valve plate main body; the thickness of the sealing component mounting seat is larger than that of the outer edge of the valve plate main body; the upper end chord surface and the lower end chord surface of the valve shaft mounting sleeve are respectively provided with an annular sealing groove 3-1; a main sealing groove 3-2 communicated with the annular sealing groove is formed in the center of the outer circumferential surface of the sealing member mounting seat; sealing members 4 are sleeved in the annular sealing groove and the main sealing groove; the sealing component adopts a ring type structure, and comprises an upper end shaft hole sealing ring 4-1 and a lower end shaft hole sealing ring 4-2 which are of an integrated structure, and arc-shaped main sealing strips 4-3 which are symmetrically arranged and are connected with the upper end shaft hole sealing ring and the lower end shaft hole sealing ring, wherein the upper end shaft hole sealing ring, the lower end shaft hole sealing ring and the arc-shaped main sealing strip-shaped complete ring type structure with symmetrical sides are arranged; the upper end shaft hole sealing ring and the lower end shaft hole sealing ring are sleeved in annular sealing grooves 3-1 on the upper end surface and the lower end surface of the valve shaft mounting sleeve; the two arc-shaped main sealing strips are arranged in the main sealing groove 3-2 on the outer circumferential surface of the sealing component mounting seat, the sleeving structure has good anti-falling property, and when the valve plate is rotated to be separated from the valve body, the sealing component cannot fall off.
In the above technical solution, preferably, the cross section of the main seal groove is in a T-shaped structure; the shape of the arc-shaped main sealing strip matched with the main sealing groove is matched with that of the sealing groove; the arc-shaped main sealing strip 4-3 comprises an installation part 4-30 and a sealing part 4-31, the sealing part is of an arc-shaped structure, the installation part is sleeved at the bottom of the T-shaped groove, the sealing part is exposed, and the sealing part is tightly attached to the inside of the valve body in a sealing state to realize self sealing after being assembled with the valve body.
In the above technical scheme, preferably, the upper end part of the upper end shaft hole sealing ring and the lower end part of the lower end shaft hole sealing ring are provided with conical sealing surfaces matched with the valve shaft mounting hole on the valve seat of the center line butterfly valve, and after the conical sealing surfaces are compressed and sealed, the sealing effect of the position of the valve shaft is improved.
The utility model also discloses a center line butterfly valve, please refer to fig. 1 to 12, which comprises a valve body 5, an upper shaft seat 5-1 arranged above the middle part of the valve body, and a lower shaft seat 5-2 arranged below the middle part of the valve body; the valve plate is arranged in the valve body, an upper valve shaft 6 is installed on the valve plate, a lower valve shaft 7 is installed at the lower end of the valve plate, the upper valve shaft is installed in an upper shaft seat through a supporting shaft sleeve, and the lower valve shaft is installed in a lower shaft seat through a supporting shaft sleeve; an annular sealing seat 5-3 is arranged in the middle of the inner wall of the valve body, and sealing transition inclined planes 5-4 are arranged on two sides of the annular sealing seat; the valve plate adopts the valve plate assembly.
The utility model discloses the theory of operation: in practical use, the upper valve shaft is driven to rotate by the driving device to realize opening or closing. When closing, the annular seal receptacle cooperation that is the inside intermediate position of symmetry arc main seal strip and valve body realizes sealed, the sealing of the arc main seal strip of the sealing member on the sealed in-process valve plate is closely cooperated by the annular sealing strip of main seal strip and the inside intermediate position of valve body and is realized sealedly, the sealed deformation when pipeline pressure rises of main seal strip on the sealed in-process valve plate, take place the extrusion with the annular sealing strip of valve body, realize the self sealss effect, thereby the friction, reduce and open and close the moment of torsion, the sealing washer at both ends extrudees towards the direction of valve shaft mounting hole simultaneously and warp, and then the sealed of valve shaft department has been realized.
The utility model discloses the power that the valve shaft is sealed is converted into to the resistance of the stress deformation who will produce when closing the valve, greatly reduced open and close the moment of torsion, also improved the sealed effect of valve shaft simultaneously, the life of extension butterfly valve. In addition, compared with the prior art, the valve plate sealing structure is convenient to maintain, the initial sealing effect can be achieved only by replacing a new sealing component after the valve plate is disassembled, and the maintenance cost is greatly reduced.
The above description is only for the preferred embodiment of the present invention and should not be taken as limiting the present invention, and any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention, such as the material of the sealing member, the cross-sectional shape of the main sealing groove, etc., should be included in the protection scope of the present invention.
Claims (4)
1. A valve plate assembly of a center line butterfly valve comprises a valve plate and a sealing component, wherein a through valve shaft mounting sleeve is arranged at the center of the valve plate, a disc-type valve plate main body taking the valve shaft mounting sleeve as the center is arranged at the center of the valve plate, and the thickness of the valve plate main body is gradually reduced from the outer circumference of the valve shaft mounting sleeve to the outside; the thickness of the sealing component mounting seat is larger than that of the outer edge of the valve plate main body; annular sealing grooves are formed in the upper end chord surface and the lower end chord surface of the valve shaft mounting sleeve; a main sealing groove communicated with the annular sealing groove is formed in the center of the outer circumferential surface of the sealing member mounting seat; sealing members are sleeved in the annular sealing groove and the main sealing groove; the sealing component adopts a ring type structure and comprises an upper end shaft hole sealing ring and a lower end shaft hole sealing ring which are of an integrated structure, and arc-shaped main sealing strips which are symmetrically arranged and are connected with the upper end shaft hole sealing ring and the lower end shaft hole sealing ring, wherein the upper end shaft hole sealing ring, the lower end shaft hole sealing ring and the arc-shaped main sealing strip-shaped complete ring type structure with symmetrical two sides are adopted; the upper end shaft hole sealing ring and the lower end shaft hole sealing ring are respectively sleeved in the annular sealing grooves on the upper end surface and the lower end surface of the valve shaft mounting sleeve; the two arc-shaped main sealing strips are sleeved in the main sealing groove on the outer circumferential surface of the sealing component mounting seat.
2. The center line butterfly valve plate assembly of claim 1, wherein: the section of the main sealing groove is of a T-shaped structure; the shape of the arc-shaped main sealing strip matched with the main sealing groove is matched with that of the sealing groove; the arc-shaped main sealing strip comprises an installation part and a sealing part, and the sealing part is of an arc-shaped structure.
3. The center line butterfly valve plate assembly of claim 1, wherein: and the upper end part of the upper end shaft hole sealing ring and the lower end part of the lower end shaft hole sealing ring are provided with conical sealing surfaces matched with the valve shaft mounting hole on the valve seat of the center line butterfly valve.
4. A center line butterfly valve comprises a valve body, an upper shaft seat arranged above the middle part of the valve body, and a lower shaft seat arranged below the middle part of the valve body; the valve plate is arranged in the valve body, the valve plate is provided with an upper valve shaft, the lower end of the valve plate is provided with a lower valve shaft, the upper valve shaft is arranged in an upper shaft seat through a supporting shaft sleeve, and the lower valve shaft is arranged in a lower shaft seat through a supporting shaft sleeve; the valve is characterized in that an annular sealing seat is arranged in the middle of the inner wall of the valve body, and sealing transition inclined planes are arranged on two sides of the annular sealing seat; the valve plate adopts the valve plate assembly of any one of the claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921568694.3U CN210461726U (en) | 2019-09-20 | 2019-09-20 | Center line butterfly valve plate assembly and center line butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921568694.3U CN210461726U (en) | 2019-09-20 | 2019-09-20 | Center line butterfly valve plate assembly and center line butterfly valve |
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| Publication Number | Publication Date |
|---|---|
| CN210461726U true CN210461726U (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921568694.3U Active CN210461726U (en) | 2019-09-20 | 2019-09-20 | Center line butterfly valve plate assembly and center line butterfly valve |
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| CN (1) | CN210461726U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486485A (en) * | 2019-09-20 | 2019-11-22 | 天津银河阀门有限公司 | A kind of centre-pivoted butterfly valve valve board assembly and centre-pivoted butterfly valve |
-
2019
- 2019-09-20 CN CN201921568694.3U patent/CN210461726U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486485A (en) * | 2019-09-20 | 2019-11-22 | 天津银河阀门有限公司 | A kind of centre-pivoted butterfly valve valve board assembly and centre-pivoted butterfly valve |
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