CN203906830U - Butterfly valve with high leakproofness - Google Patents
Butterfly valve with high leakproofness Download PDFInfo
- Publication number
- CN203906830U CN203906830U CN201420339584.0U CN201420339584U CN203906830U CN 203906830 U CN203906830 U CN 203906830U CN 201420339584 U CN201420339584 U CN 201420339584U CN 203906830 U CN203906830 U CN 203906830U
- Authority
- CN
- China
- Prior art keywords
- valve
- butterfly
- butterfly plate
- valve rod
- annular boss
- 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 - Fee Related
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- Lift Valve (AREA)
Abstract
The utility model discloses a butterfly valve with high leakproofness. The butterfly valve is characterized in that multiple mounting holes are formed in the outer wall of an annular boss and distributed on the outer wall of the annular boss circularly uniformly; springs are arranged in the mounting holes respectively; the length of the springs is greater than the depth of the mounting holes; one end of each spring is in contact with the bottom wall of the corresponding mounting hole, and the other end of each spring is in contact with the inner wall of a sealing ring. The sealing ring is arranged on the annular boss in a sleeving manner, the length of the springs is greater than the depth of the mounting holes, the springs are compressed in the mounting holes by virtue of the sealing ring and in contact with the inner wall of the sealing ring, the sealing ring is under the action of the springs, the contact force between the sealing ring and the inner wall of a valve hole is increased, the leakproofness of the butterfly valve is increased, wear of the sealing ring is smaller after long term use, and the leakproofness of the butterfly valve can still be maintained under the spring action.
Description
Technical field
The utility model relates to a kind of butterfly valve, and more particularly, it relates to a kind of butterfly valve of high leak tightness.
Background technique
Butterfly valve open-shut device is a discoidal butterfly plate, and the axis around himself in valve body rotates, thereby reaches the object that opens and closes or regulate.Butterfly valve standard-sized sheet is normally less than 80 ° to complete shut-down, and butterfly valve and butterfly bar itself do not have self-lock ability, for the location of butterfly plate, on valve rod, install worm speed reducer additional.Adopt worm speed reducer, not only can make butterfly plate there is self-lock ability, butterfly plate is stopped on arbitrary position, can also improve the operating characteristics of valve.
Traditional butterfly valve, generally includes valve body, valve rod and butterfly plate, and described valve body is provided with the valve opening for liquid communication, and described butterfly plate is placed in valve opening, and butterfly plate is arranged with seal ring and coordinates with valve opening for sealing butterfly plate.But butterfly valve uses for a long time, butterfly plate repeats to open and close, and seal ring sheathed on butterfly plate is easily out of shape, and reduces the sealing of butterfly valve, reduces butterfly valve working life.
Model utility content
The deficiency existing for prior art, the purpose of this utility model is to provide a kind of butterfly valve of high leak tightness, has good sealing effect, high life feature.
For achieving the above object, the utility model provides following technological scheme: a kind of butterfly valve of high leak tightness, comprise valve body, valve rod, bottom, one end that described valve rod runs through valve body is connected with Worm gear case, the other end is connected with bottom, described valve body is provided with the valve opening for liquid communication, in described valve opening, be provided with for controlling the butterfly plate of valve opening discharge value size, described valve opening and butterfly plate are suitable, described butterfly plate one end face is provided with two spaced fixing parts, described two fixing parts are equipped with fixed hole and are set on valve rod, described fixing part is provided with for being fixedly connected with the fixing pin of valve rod and butterfly plate, described valve rod and butterfly plate are equipped with the pin hole suitable with fixing pin, a butterfly plate end face relative to fixing part is provided with annular boss, described annular boss is provided with the seal ring that butterfly plate and valve opening are sealed and matched, described seal ring is set on annular boss, described butterfly plate is provided with the annular pressing plate being fixedly connected with it, described seal ring is clamped between butterfly plate and annular pressing plate, described annular boss outer side wall is provided with some mounting holes, the even circle distribution of some mounting holes is at annular boss outer side wall, in described mounting hole, be provided with spring, described spring length is greater than the degree of depth of mounting hole, spring one end and mounting hole diapire are inconsistent, the inwall of the other end and seal ring is inconsistent.
By adopting technique scheme, described seal ring is set on annular boss, described spring length is greater than the degree of depth of mounting hole, seal ring makes spring-compressed in mounting hole and is inconsistent with seal ring inwall, described seal ring, under spring action, increases seal ring and valve opening inwall conflict power, increases butterfly valve seal, after seal ring is long-term, wearing and tearing diminish, and in spring action, still can keep the sealing of butterfly valve.
The utility model is further set to: described valve body both ends of the surface are respectively equipped with valve stem casing and are placed in valve body, and described valve stem casing is all set on valve rod.The sheathed valve stem casing of valve rod, can increase the tightness of valve rod and valve body, prevents that valve rod from moving up and down,
The utility model is further set to: the sheathed bearing in one end that described valve rod is connected with bottom, described bearing is fixed between valve body and bottom.Valve rod is connected with bottom by bearing, is convenient to valve rod and rotates.
The utility model is further set to: described fixing pin both ends of the surface are equipped with chamfering, and wherein an end face is provided with the tapped hole caving inward, and the outer side wall of described fixing pin is provided with vent slot, and described vent slot cross section is semicircle.Fixing pin arranges chamfering and is convenient to enter butterfly plate and valve rod and is provided with pin hole and is fixed and is connected, when pin coordinates with pin hole, in pin hole, air can be discharged by vent slot, being convenient to pin is inserted in pin hole, tapped hole is at one end set simultaneously, can pin be extracted from pin hole by extracting tool and tapped hole, be convenient to butterfly valve Assembly And Disassembly.
Accompanying drawing explanation
Fig. 1 is the partial sectional view of the butterfly valve of a kind of high leak tightness of the utility model;
Fig. 2 is the sectional view of butterfly plate 5 in Fig. 1;
Fig. 3 is the sectional view of fixing pin 6 in Fig. 1.
In figure 1, valve body; 2, valve rod; 3, bottom; 4, Worm gear case; 5, butterfly plate; 6, fixing pin; 7, seal ring; 8, annular pressing plate; 9, spring; 11, valve opening; 12, valve stem casing; 13, bearing; 51, fixing part; 52, annular boss; 61, vent slot; 62, tapped hole; 511, fixed hole; 512, pin hole; 521, mounting hole.
Embodiment
Referring to figs. 1 through Fig. 3, the butterfly valve of a kind of high leak tightness of the utility model is described further.
A kind of butterfly valve of high leak tightness, comprise valve body 1, valve rod 2, bottom 3, one end that described valve rod 2 runs through valve body 1 is connected with Worm gear case 4, the other end is connected with bottom 3, described valve body 1 is provided with the valve opening 11 for liquid communication, in described valve opening 11, be provided with for controlling the butterfly plate 5 of valve opening discharge value size, described valve opening 11 is suitable with butterfly plate 5, described butterfly plate 5 one end faces are provided with two spaced fixing parts 51, described two fixing parts 51 are equipped with fixed hole 511 and are set on valve rod 2, described fixing part 51 is provided with for being fixedly connected with the fixing pin 6 of valve rod 2 and butterfly plate 5, described valve rod 2 is equipped with the pin hole 512 suitable with fixing pin 6 with butterfly plate 5, for the ease of fixing pin 6 Assembly And Disassemblies, described fixing pin 6 both ends of the surface are equipped with chamfering, chamfer angle can be 30 degree～45 degree, wherein 35 degree are optimal selection, wherein an end face is provided with the tapped hole caving inward, the outer side wall of described fixing pin 6 is provided with vent slot 61, described vent slot cross section is semicircle, fixing pin 6 arranges chamfering and is convenient to enter butterfly plate 5 and valve rod 2 and is provided with pin hole and is fixed and is connected, when fixing pin 6 coordinates with pin hole, in pin hole, air can be discharged by vent slot 61, being convenient to pin is inserted in pin hole, tapped hole 62 is at one end set simultaneously, can be by extracting tool and tapped hole 62, fixing pin 6 is extracted from pin hole, butterfly plate 5 end face relative to fixing part 51 is provided with annular boss 52, described annular boss 52 is provided with the seal ring 7 that butterfly plate 5 and valve opening 11 are sealed and matched, described seal ring 7 is set on annular boss 52, described butterfly plate 5 is provided with the annular pressing plate 8 being fixedly connected with it, described seal ring 7 is clamped between butterfly plate and annular pressing plate, described annular boss 52 outer side walls are provided with some mounting holes 521, the even circle distribution of some mounting holes 521 is at annular boss 52 outer side walls, wherein mounting hole 521 quantity are four, for optimal selection, in described mounting hole 521, be provided with spring 9, described spring 9 length are greater than the degree of depth of mounting hole, spring 9 one end and mounting hole 521 diapires are inconsistent, the inwall of the other end and seal ring 7 is inconsistent, described seal ring 7 is set on annular boss 52, described spring 9 length are greater than the degree of depth of mounting hole 521, it is interior and inconsistent with seal ring 7 inwalls that seal ring 7 makes spring 9 be compressed in mounting hole 521, described seal ring 7 is under spring 9 effects, increase seal ring 7 and valve opening 11 inwall conflict power, increase butterfly valve seal, after seal ring 7 is long-term, wearing and tearing diminish, in spring 9 effects, still can keep the sealing of butterfly valve.
Described valve body 1 both ends of the surface are respectively equipped with valve stem casing 12 and are placed in valve body, and described valve stem casing 12 is all set on valve rod 2.The sheathed valve stem casing 12 of valve rod 2, can increase the tightness of valve rod 2 and valve body 1, prevents that valve rod 2 from moving up and down.
The sheathed bearing 13 in one end that described valve rod 2 is connected with bottom 3, described bearing 13 is fixed between valve body 1 and bottom 3, and valve rod 2 is connected with bottom 3 by bearing 13, is convenient to valve rod 2 and rotates.
Claims (4)
1. the butterfly valve of a high leak tightness, comprise valve body, valve rod, bottom, one end that described valve rod runs through valve body is connected with Worm gear case, the other end is connected with bottom, described valve body is provided with the valve opening for liquid communication, in described valve opening, be provided with for controlling the butterfly plate of valve opening discharge value size, described valve opening and butterfly plate are suitable, described butterfly plate one end face is provided with two spaced fixing parts, described two fixing parts are equipped with fixed hole and are set on valve rod, described fixing part is provided with for being fixedly connected with the fixing pin of valve rod and butterfly plate, described valve rod and butterfly plate are equipped with the pin hole suitable with fixing pin, a butterfly plate end face relative to fixing part is provided with annular boss, described annular boss is provided with the seal ring that butterfly plate and valve opening are sealed and matched, described seal ring is set on annular boss, described butterfly plate is provided with the annular pressing plate being fixedly connected with it, described seal ring is clamped between butterfly plate and annular pressing plate, it is characterized in that: described annular boss outer side wall is provided with some mounting holes, the even circle distribution of some mounting holes is at annular boss outer side wall, in described mounting hole, be provided with spring, described spring length is greater than the degree of depth of mounting hole, spring one end and mounting hole diapire are inconsistent, the inwall of the other end and seal ring is inconsistent.
2. the butterfly valve of a kind of high leak tightness according to claim 1, is characterized in that: described valve body both ends of the surface are respectively equipped with valve stem casing and are placed in valve body, and described valve stem casing is all set on valve rod.
3. the butterfly valve of a kind of high leak tightness according to claim 1 and 2, is characterized in that: one end that described valve rod is connected with bottom is arranged with the bearing rotating for valve rod, and described bearing is fixed between valve body and bottom.
4. the butterfly valve of a kind of high leak tightness according to claim 3, it is characterized in that: described fixing pin both ends of the surface are equipped with chamfering, wherein an end face relative with valve rod is provided with the tapped hole caving inward, and the outer side wall of described fixing pin is provided with vent slot, and described vent slot cross section is semicircle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420339584.0U CN203906830U (en) | 2014-06-24 | 2014-06-24 | Butterfly valve with high leakproofness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420339584.0U CN203906830U (en) | 2014-06-24 | 2014-06-24 | Butterfly valve with high leakproofness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203906830U true CN203906830U (en) | 2014-10-29 |
Family
ID=51781111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420339584.0U Expired - Fee Related CN203906830U (en) | 2014-06-24 | 2014-06-24 | Butterfly valve with high leakproofness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203906830U (en) |
-
2014
- 2014-06-24 CN CN201420339584.0U patent/CN203906830U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141029 Termination date: 20190624 |