CN205479426U - Knife gate's packing structure - Google Patents
Knife gate's packing structure Download PDFInfo
- Publication number
- CN205479426U CN205479426U CN201620296570.4U CN201620296570U CN205479426U CN 205479426 U CN205479426 U CN 205479426U CN 201620296570 U CN201620296570 U CN 201620296570U CN 205479426 U CN205479426 U CN 205479426U
- Authority
- CN
- China
- Prior art keywords
- seal
- knife gate
- flashboard
- stuffing
- box
- 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
Links
- 238000012856 packing Methods 0.000 title claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 34
- 210000004907 gland Anatomy 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 2
- 239000000945 filler Substances 0.000 abstract description 8
- 239000011324 bead Substances 0.000 abstract 3
- 238000001125 extrusion Methods 0.000 abstract 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Sliding Valves (AREA)
Abstract
The utility model discloses a knife gate's packing structure, its technical scheme main points are be provided with filler rubber seal in the packing box, filler rubber seal includes the ring type seal body, the length of ring type seal body is greater than the degree of depth of packing box, and filler rubber seal can receive extrusion deformation for filler rubber seal's inside wall and flashboard are closely laminated, and filler rubber seal's lateral wall and valve body are laminated mutually, simultaneously the internal surface and the surface of ring type seal body all are equipped with the sealed bead of a plurality of, and the sealed bead of a plurality of when sealed bead is closely laminated with flashboard or valve body, can receive extrusion deformation along the even interval distribution of length direction of ring type seal body, improves leakproofness between ring type seal body and flashboard and the valve body to guarantee knife gate's sealing performance, it is sealed reliable.
Description
Technical field
This utility model relates to the parts of knife gate valve, more specifically, it relates to a kind of disconnecting link
The packing seal structure of valve.
Background technology
Knife gate valve is flashboard also known as cutter door gate valve, blade type Parallel Slide Valves, its opening and closing element, flashboard
The direction of motion is perpendicular with flow direction, by cutting with the knife-edge flashboard of cutting fiber material
Disconnected medium.
The nonmetal V-type filler of prior art, during installation, stacked combination puts into the filler of valve body
Letter, compresses gland, and groove elastic deformation and hill are fitted, thus in, upper filler interior
Circumference fits tightly with flashboard, and excircle fits tightly with stuffing-box inwall, it is achieved seal.Lack
Point is as the passage of time, and one is elastic stress decay, seal pressure decrescence, to certain value
Losing sealing function, two is inner peripheral surface and flashboard relative motion, unavoidably has abrasion, gesture
Seal pressure must be made decrescence.
Utility model content
The deficiency existed for prior art, the purpose of this utility model is to provide a kind of sealing
The packing seal structure of knife gate valve reliably.
For achieving the above object, this utility model provides following technical scheme:
The packing seal structure of a kind of knife gate valve, including flashboard, valve body, described valve body is provided with
Stuffing-box, stuffing-box arranges gland, is provided with loaded rubber and seals in described stuffing-box
Circle, described loaded rubber sealing ring includes O-ring seal body, described O-ring seal body
Length more than the degree of depth of stuffing-box, inner surface and the outer surface of described O-ring seal body are equal
Being provided with several and seal fin, several seal the length direction of fin annularly sealing ring body
Uniform intervals is distributed.
This utility model is arranged further: described O-ring seal body be provided with v-depression,
Described v-depression is made up of outer lips and epipharyngeal sclerites, and described epipharyngeal sclerites fits with flashboard.
This utility model is arranged further: the thickness of described epipharyngeal sclerites is less than outer lips, and institute
State epipharyngeal sclerites and stretch out length more than outer lips.
This utility model is arranged further: the cross section of described sealing fin is circular arc, adjacent
Two seal fin uses fillet excessive.
This utility model beneficial effect: during use, only need to be arranged on this loaded rubber sealing ring
In stuffing-box, then it is fixed in stuffing-box by gland, described O-ring seal body
Length more than the degree of depth of stuffing-box, loaded rubber sealing ring can be squeezed deformation so that fills out
Material rubber seal medial wall fit tightly with flashboard, the lateral wall of loaded rubber sealing ring and
Valve body fits, and inner surface and the outer surface of the most described O-ring seal body are equipped with some
Individual sealing fin, several seal the length direction uniform intervals of fin annularly sealing ring body
Distribution, when sealing fin fits tightly with flashboard or valve body, can be squeezed deformation, improves ring
Sealing between shape sealing ring body and flashboard and valve body, thus ensure the sealing of knife gate valve
Can, seal reliable.
Accompanying drawing explanation
Fig. 1 is the sectional view of the packing seal structure of a kind of knife gate valve of this utility model；
Fig. 2 is A partial enlarged drawing in Fig. 1；
Fig. 3 is the sectional view of loaded rubber sealing ring；
Fig. 4 is B partial enlarged drawing in Fig. 3.
Description of reference numerals: 1, flashboard；2, valve body；3, stuffing-box；4, gland；
5, loaded rubber sealing ring；51, O-ring seal body；52, fin is sealed；53、V
Connected in star；531, outer lips；532, epipharyngeal sclerites.
Detailed description of the invention
Referring to the drawings the packing seal structure of 1 to Fig. 4 knife gate valve a kind of to this utility model do into
One step describes in detail.
The packing seal structure of a kind of knife gate valve, including flashboard 1, valve body 2, described valve body 2
It is provided with stuffing-box 3, stuffing-box 3 arranges gland 4, described stuffing-box 3 is arranged
Loaded rubber sealing ring 5, described loaded rubber sealing ring 5 is had to include O-ring seal body 51,
The length of described O-ring seal body 51 is more than the degree of depth of stuffing-box 3, described ring packing
The inner surface of circle body 51 and outer surface are equipped with several and seal fin 52, and several seal
The length direction uniform intervals distribution of fin 52 annularly sealing ring body 51.
During use, only this loaded rubber sealing ring 5 need to be arranged in stuffing-box 3, then pass through
Gland 4 is fixed in stuffing-box 3, and the length of described O-ring seal body 51 is more than
The degree of depth of stuffing-box 3, loaded rubber sealing ring 5 can be squeezed deformation so that loaded rubber
The medial wall of sealing ring 5 fits tightly with flashboard 1, the lateral wall of loaded rubber sealing ring 5 with
Valve body 2 fits, and inner surface and the outer surface of the most described O-ring seal body 51 are all provided with
Having several to seal fin 52, several seal fin 52 annularly sealing ring body 51
Length direction uniform intervals is distributed, when sealing fin 52 fits tightly with flashboard 1 or valve body 2,
Can be squeezed deformation, improves between O-ring seal body 51 and flashboard 1 and valve body 2 close
Feng Xing, thus ensure the sealing property of knife gate valve, seal reliable.
The cross section of wherein said sealing fin 52 is circular arc, and adjacent two seal fin 52 adopts
Excessive with fillet, it is simple to loaded rubber sealing ring 5 manufactures, reduce production cost.
Described O-ring seal body 51 be provided with v-depression 53, described v-depression 53
Being made up of outer lips 531 and epipharyngeal sclerites 532, described epipharyngeal sclerites 532 fits with flashboard 1,
When loaded rubber sealing ring 5 barrier liquid medium passes through, it is recessed that this liquid medium can extrude V-arrangement
The medial wall of groove 53 is tightly fitted in the end face of flashboard 1.
More it is fitted tightly on the end face of flashboard 1 for the ease of epipharyngeal sclerites 532, described epipharynx
The thickness of sheet 532 is less than outer lips 531, and described epipharyngeal sclerites 532 length that stretches out is big
In outer lips 531.
The above is only preferred implementation of the present utility model, protection model of the present utility model
Enclosing and be not limited merely to above-described embodiment, all technical schemes belonged under this utility model thinking are equal
Belong to protection domain of the present utility model.It should be pointed out that, the ordinary skill for the art
For personnel, without departing from the some improvements and modifications under this utility model principle premise, these
Improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (4)
1. a packing seal structure for knife gate valve, including flashboard and valve body, described valve body is provided with
Stuffing-box, stuffing-box arranges gland, it is characterized in that: is provided with in described stuffing-box and fills out
Material rubber seal, described loaded rubber sealing ring includes O-ring seal body, described annular
The length of sealing ring body is more than the degree of depth of stuffing-box, the inner surface of described O-ring seal body
Being equipped with several with outer surface and seal fin, several seal fin annularly sealing ring body
Length direction uniform intervals distribution.
The packing seal structure of a kind of knife gate valve the most according to claim 1, is characterized in that: institute
Stating the v-depression that is provided with of O-ring seal body, described v-depression is by outer lips and epipharyngeal sclerites
Constituting, described epipharyngeal sclerites fits with flashboard.
The packing seal structure of a kind of knife gate valve the most according to claim 2, is characterized in that: institute
The thickness stating epipharyngeal sclerites is less than outer lips, and described epipharyngeal sclerites stretches out length more than outer lip
Sheet.
The packing seal structure of a kind of knife gate valve the most according to claim 1, is characterized in that: institute
The cross section stating sealing fin is circular arc, and adjacent two seal fins uses fillets excessive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620296570.4U CN205479426U (en) | 2016-04-11 | 2016-04-11 | Knife gate's packing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620296570.4U CN205479426U (en) | 2016-04-11 | 2016-04-11 | Knife gate's packing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205479426U true CN205479426U (en) | 2016-08-17 |
Family
ID=56644920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620296570.4U Expired - Fee Related CN205479426U (en) | 2016-04-11 | 2016-04-11 | Knife gate's packing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205479426U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109519559A (en) * | 2018-12-18 | 2019-03-26 | 浙江冠力阀门有限公司 | Knife gate valve |
| CN109854769A (en) * | 2019-03-04 | 2019-06-07 | 新余飞虎管道技术设备有限责任公司 | Hydraulic external flashboard large bore valves |
-
2016
- 2016-04-11 CN CN201620296570.4U patent/CN205479426U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109519559A (en) * | 2018-12-18 | 2019-03-26 | 浙江冠力阀门有限公司 | Knife gate valve |
| CN109854769A (en) * | 2019-03-04 | 2019-06-07 | 新余飞虎管道技术设备有限责任公司 | Hydraulic external flashboard large bore valves |
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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: 20160817 |