CN207486096U - A kind of hard sealing double eccentric half ball valve - Google Patents
A kind of hard sealing double eccentric half ball valve Download PDFInfo
- Publication number
- CN207486096U CN207486096U CN201721264505.4U CN201721264505U CN207486096U CN 207486096 U CN207486096 U CN 207486096U CN 201721264505 U CN201721264505 U CN 201721264505U CN 207486096 U CN207486096 U CN 207486096U
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- CN
- China
- Prior art keywords
- valve
- seal
- valve seat
- half ball
- double eccentric
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Abstract
The utility model provides a kind of hard sealing double eccentric half ball valve, it is related to valve seal technical field, including valve rod, valve body, filler, bearing, adjust pad, valve base seal, seal spool part, insert body, valve seat gland, bearing, lower axle, gasket seal.The utility model reduces the abrasion between valve seat and spool by two bias, improves semisphere valve service life；It is connected through a screw thread between valve seat gland and valve body, and adjust pad is placed between valve seat gland and valve body, made adjust pad that flexible deformation occur by the extruding of valve seat gland, valve seat is allowed to be in close contact with spool, so as to prevent dielectric leakage；The utility model valve base seal, seal spool part, as sealing element, have the characteristics that wear-resistant, corrosion-resistant, Anti-erosion, good seal performance, service life are long using cermet.
Description
Technical field
The utility model is related to valve seal technical fields, and in particular to a kind of hard sealing double eccentric half ball valve.
Background technology
Valve is the medium conveying apparatus being widely used in the industries such as oil, chemical industry, papermaking and sewage disposal.By institute
Pumped (conveying) medium often has corrosivity, and containing a large amount of solid particles, sealing surface is caused easily to corrode and wear, causes sealing pair
, there is dielectric leakage, seriously affects valve service life in failure.Existing valve generally use Surface hardening treatment improves valve
Wear-resistant, corrosion resistance characteristic, but its service life, cost and sealing performance are still reached to less than requirement.
Utility model content
(1) the technical issues of solving
The utility model in order to overcome wear-resistant above-mentioned valve, corrosion-resistant, leakproofness and service life there are the defects of ask
Topic, the utility model is using cermet as sealing element, it is proposed that a kind of hard sealing double eccentric half ball valve, the double eccentric half ball
Valve has the characteristics that wear-resistant, corrosion-resistant, Anti-erosion, good seal performance, service life are long.
(2) technical solution
In order to achieve the above object, the utility model is achieved by the following technical programs：
A kind of hard sealing double eccentric half ball valve, including valve rod, valve body, clutch shaft bearing, second bearing, valve base seal, valve
Core sealing element, insert body, valve seat gland, bearing, lower axle；The valve rod is connected by clutch shaft bearing with insert body, spool
Ontology is also connected by second bearing with lower axle, and the valve rod, lower axle are connected respectively with valve body；The valve base seal, spool
Sealing element is mounted between valve seat gland and insert body, and the valve seat gland is flexibly connected with valve body.
Further, the valve seat gland is connect with valve body with thread forms.
Further, adjust pad is installed between the valve seat gland and valve body.
Further, the adjust pad is teflon gasket.
Further, the valve base seal is cermet sealing element.
Further, the seal spool part is cermet sealing element.
Further, filler is filled between the valve rod and valve body.
Further, the filler is asbestos, soft graphite or polytetrafluoroethylene (PTFE).
Further, gasket seal is installed between the lower axle and valve body.
Further, the gasket seal is teflon gasket.
(3) advantageous effect
The beneficial effects of the utility model：A kind of hard sealing double eccentric half ball valve, by two bias reduce valve seat with
Abrasion between spool improves semisphere valve service life；It is connected through a screw thread between valve seat gland and valve body, and in valve seat pressure
Adjust pad is placed between lid and valve body, makes adjust pad that flexible deformation occur by the extruding of valve seat gland, allows valve seat and spool
It is in close contact, so as to prevent dielectric leakage；The utility model valve base seal, seal spool part are using cermet as sealing
Part has the characteristics that wear-resistant, corrosion-resistant, Anti-erosion, good seal performance, service life are long.
Description of the drawings
It in order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the utility model double eccentric half ball valve structure chart.
In figure, 1 valve rod, 2 fillers, 3 valve bodies, 4 clutch shaft bearings, 5 adjust pads, 6 valve base seals, 7 seal spool parts, 8
Insert body, 9 valve seat glands, 10 second bearings, 11 lower axles, 12 gasket seals.
Specific embodiment
Purpose, technical scheme and advantage to make the utility model embodiment are clearer, new below in conjunction with this practicality
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, those of ordinary skill in the art's all other embodiments obtained without creative efforts, belongs to
The range of the utility model protection.
With reference to Fig. 1, a kind of hard sealing double eccentric half ball valve, including valve rod 1, valve body 2, filler 3, clutch shaft bearing 4, adjustment
Gasket 5, valve base seal 6, seal spool part 7, insert body 8, valve seat gland 9, second bearing 10, lower axle 11, gasket seal
12。
Valve rod 1 is connected by clutch shaft bearing 4 with insert body 8, and insert body 8 also passes through second bearing 10 and 11 phase of lower axle
Even, valve rod 1, lower axle 11 are connected respectively with valve body 2.Filled with filler 3 between valve rod 1 and valve body 2, filler 3 can be asbestos,
Soft graphite or polytetrafluoroethylene (PTFE).Gasket seal 12 is installed, gasket seal 12 can be polytetrafluoro between lower axle 11 and valve body 2
Ethylene gasket.Valve base seal 6, seal spool part 7 are mounted between valve seat gland 9 and insert body 8, valve base seal 6, valve
Core sealing element 7 is respectively cermet sealing element.Valve seat gland 9 is flexibly connected with valve body 2, and valve seat gland 9 and valve body 2 can be with
Thread forms connect.Adjust pad 5 is installed, adjust pad 5 can be polytetrafluoroethylene (PTFE) pad between valve seat gland 9 and valve body 2
Piece.
Double eccentric structures refer to that the spool centre of gyration and the geometric center of valve channel axis and valve core sealed cover have partially
It puts.Semisphere valve makes spool opening-closing process have the function of gradually to go out to be detached to valve seat and is fade-in extruding by two bias, reduces
Abrasion between valve seat and spool improves the semisphere valve service life.Seal spool part and insert body form an entirety, and valve seat is close
Cover is that circular conical surface, spool are spherical.
In conclusion the utility model embodiment, the abrasion between valve seat and spool is reduced by two bias, improve
Semisphere valve service life；It is connected through a screw thread between valve seat gland and valve body, and places and adjust between valve seat gland and valve body
Whole gasket makes adjust pad that flexible deformation occur, valve seat is allowed to be in close contact with spool, so as to prevent to be situated between by the extruding of valve seat gland
Matter leaks；The utility model valve base seal, seal spool part, as sealing element, have wear-resistant, corrosion resistant using cermet
The characteristics of erosion, Anti-erosion, good seal performance, long service life.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any this practical relationship or sequence.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Non-exclusive inclusion, so that process, method, article or equipment including a series of elements not only will including those
Element, but also including other elements that are not explicitly listed or further include as this process, method, article or equipment
Intrinsic element.
Above example is only to illustrate the technical solution of the utility model, rather than its limitations；Although with reference to aforementioned reality
Example is applied the utility model is described in detail, it will be understood by those of ordinary skill in the art that：It still can be to preceding
The technical solution recorded in each embodiment is stated to modify or carry out equivalent replacement to which part technical characteristic；And these
Modification is replaced, the spirit and model of various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (10)
1. a kind of hard sealing double eccentric half ball valve, it is characterised in that：Including valve rod (1), valve body (2), clutch shaft bearing (4), valve seat
Sealing element (6), seal spool part (7), insert body (8), valve seat gland (9), second bearing (10), lower axle (11)；The valve
Bar (1) is connected by clutch shaft bearing (4) with insert body (8), and insert body (8) also passes through second bearing (10) and lower axle (11)
It is connected, the valve rod (1), lower axle (11) are connected respectively with valve body (2)；The valve base seal (6), seal spool part (7) peace
Between valve seat gland (9) and insert body (8), the valve seat gland (9) is flexibly connected with valve body (2).
2. a kind of hard sealing double eccentric half ball valve as described in claim 1, it is characterised in that：The valve seat gland (9) and valve
Body (2) is connected with thread forms.
3. a kind of hard sealing double eccentric half ball valve as claimed in claim 2, it is characterised in that：The valve seat gland (9) and valve
Adjust pad (5) is installed between body (2).
4. a kind of hard sealing double eccentric half ball valve as claimed in claim 3, it is characterised in that：The adjust pad (5) is poly-
Tetrafluoroethene gasket.
5. a kind of hard sealing double eccentric half ball valve as described in claim 1, it is characterised in that：The valve base seal (6) is
Cermet sealing element.
6. a kind of hard sealing double eccentric half ball valve as described in claim 1, it is characterised in that：The seal spool part (7) is
Cermet sealing element.
7. a kind of hard sealing double eccentric half ball valve as described in claim 1, it is characterised in that：The valve rod (1) and valve body (2)
Between be filled with filler (3).
8. a kind of hard sealing double eccentric half ball valve as claimed in claim 7, it is characterised in that：The filler (3) is asbestos, soft
Property graphite or polytetrafluoroethylene (PTFE).
9. a kind of hard sealing double eccentric half ball valve as described in claim 1, it is characterised in that：The lower axle (11) and valve body
(2) gasket seal (12) is installed between.
10. a kind of hard sealing double eccentric half ball valve as claimed in claim 9, it is characterised in that：The gasket seal (12) is
Teflon gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721264505.4U CN207486096U (en) | 2017-09-29 | 2017-09-29 | A kind of hard sealing double eccentric half ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721264505.4U CN207486096U (en) | 2017-09-29 | 2017-09-29 | A kind of hard sealing double eccentric half ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207486096U true CN207486096U (en) | 2018-06-12 |
Family
ID=62482988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721264505.4U Expired - Fee Related CN207486096U (en) | 2017-09-29 | 2017-09-29 | A kind of hard sealing double eccentric half ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207486096U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113770330A (en) * | 2020-06-09 | 2021-12-10 | 株式会社沙迪克 | Backflow prevention device of light metal injection device and backflow prevention method thereof |
-
2017
- 2017-09-29 CN CN201721264505.4U patent/CN207486096U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113770330A (en) * | 2020-06-09 | 2021-12-10 | 株式会社沙迪克 | Backflow prevention device of light metal injection device and backflow prevention method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180612 Termination date: 20190929 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |