CN209245442U - It is a kind of to pre-tighten filling-material structure certainly - Google Patents
It is a kind of to pre-tighten filling-material structure certainly Download PDFInfo
- Publication number
- CN209245442U CN209245442U CN201822153201.1U CN201822153201U CN209245442U CN 209245442 U CN209245442 U CN 209245442U CN 201822153201 U CN201822153201 U CN 201822153201U CN 209245442 U CN209245442 U CN 209245442U
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- Prior art keywords
- valve rod
- bonnet
- packing layer
- stuffing
- box
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Abstract
The utility model provides a kind of from preload filling-material structure, including bonnet, valve rod, gland and hold-down grid, valve rod setting forms stuffing-box at bonnet, center and between bonnet, inner wall, packing layer is filled in stuffing-box, gland is crimped on the packing layer in stuffing-box, it is corresponded in stuffing-box and is also equipped at least one matrix liner around valve rod below packing layer, it is equipped with elastic element around valve rod below each matrix liner, elastic element and bonnet, elastic abutment below the matrix liner of bottom.The utility model structure is simple, and design rationally, is effectively utilized the elastic characteristic of elastic element, makes up the variation that packing layer pretightning force occurs in valve frequent movement, makes packing layer keep keeping stability from Pre strained state, reduces at filler and the possibility revealed occur.
Description
Technical field
The utility model relates to valve packing technical fields, more particularly to a kind of preload filling-material structure certainly.
Background technique
Currently, existing valve is using multistage filling-material structure, conventional filler structure is by hold-down grid and filler pressing sleeve pressure
Tight filler realizes the packing seal at valve rod.But after being used for a long time, the frequent movement of valve is easy to cause filler to loosen, and makes to fill out
It is revealed at material, even if corresponding replacement filler still will continue to reveal at filler after continuing to use a period of time.
Therefore it is directed to this leakage problem, it is necessary to design a kind of new packing structure that can effectively reduce leakage.
Utility model content
Technical problem to be solved by the utility model is: the deficiency in order to overcome the prior art, the utility model provides one
The simple structure and reasonable design that kind is designed according to existing filling-material structure makes filler keep effectively reducing at filler from Pre strained state
The a kind of of leakage pre-tightens filling-material structure certainly.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of pre-tighten filling-material structure certainly, including upper
Valve deck, valve rod, gland and hold-down grid, valve rod setting form filler at bonnet, center and between bonnet, inner wall
Letter, the stuffing-box is interior to be filled with packing layer, and gland is crimped on the packing layer in stuffing-box, right in the stuffing-box
It answers and is also equipped at least one matrix liner around valve rod below packing layer, valve rod is surround below each matrix liner and is equipped with elasticity member
Part, elastic element and bonnet, elastic abutment below the matrix liner of bottom；Ring on the bonnet, upper surface
It is equipped with threaded hole around valve rod, studs is connected in the threaded hole, the screw thread hole site of bonnet, is corresponded on hold-down grid
It separately is provided with threaded hole, described studs one end is threadedly coupled with the threaded hole of bonnet, and the other end passes through nut and filler pressure
The threaded hole of plate is screwed.
Further, elastic element is butterfly spring.
Further, it corresponds in stuffing-box and is set around valve rod there are two matrix liner below packing layer, each filler serves as a contrast
Pad lower section is equipped with butterfly spring around valve rod.
Further, hold-down grid lower end surface has arc-shaped cavity, has at the top of the gland and cooperates with arc-shaped cavity
Arcwall face.By the cooperation of arcwall face and arc-shaped cavity, contraposition is crimped and can more be consolidated between hold-down grid and gland, is not easy
Sliding advantageously reduces issuable filler when valve working and loosens, and reducing leakage may.
In the present solution, utilizing matrix liner and the producible spy of butterfly spring in packing layer bottom design flexibility element
Property, using butterfly spring, deflection changes and the constant characteristic of output loads in certain variations section, effectively adapts to valve frequency
The sealing pressing force generated in numerous movement work to packing layer, is made up in valve frequent movement by the characteristic of butterfly spring and is filled out
The variation that bed of material pretightning force occurs makes packing layer keep keeping stability from Pre strained state, reduce occur revealing at filler can
Energy.
The utility model has the beneficial effects that it is provided by the utility model a kind of from filling-material structure is pre-tightened, based on existing
Filling-material structure, structure is simple, and design rationally, is effectively utilized the elastic characteristic of elastic element, makes up in valve frequent movement and fill out
The variation that bed of material pretightning force occurs makes packing layer keep keeping stability from Pre strained state, reduce occur revealing at filler can
Energy.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the structural schematic diagram of the utility model optimum embodiment.
It is 1, bonnet, 2 in figure, valve rod 3, gland 4, hold-down grid 5, matrix liner 6, elastic element 7, double
Header stud 8, nut 9, arcwall face 10, packing layer.
Specific embodiment
The utility model is described in further detail presently in connection with attached drawing.These attached drawings are simplified schematic diagram,
Only illustrate the basic structure of the utility model in a schematic way, therefore it only shows composition related with the utility model.
As shown in Figure 1 is a kind of from filling-material structure is pre-tightened, and is the utility model optimum embodiment, including bonnet, 1, valve rod
2, gland 3 and hold-down grid 4.The setting of valve rod 2 forms stuffing-box at 1 center of bonnet, and between 1 inner wall of bonnet,
Packing layer 10 is filled in the stuffing-box, gland 3 is crimped on the packing layer 10 in stuffing-box.
It is equipped with threaded hole around valve rod 2 on 1 upper surface of bonnet, is connected with studs 7, filler pressure in the threaded hole
The screw thread hole site that bonnet, 1 is corresponded on plate 4 is separately provided with threaded hole, the threaded hole spiral shell of described 7 one end of studs and bonnet, 1
Line connection, the other end are screwed by nut 8 and the threaded hole of hold-down grid 4.
4 lower end surface of hold-down grid has arc-shaped cavity, has the arcwall face 9 cooperated with arc-shaped cavity at the top of the gland 3.
By the cooperation of arcwall face 9 and arc-shaped cavity, contraposition is crimped and can more be consolidated between hold-down grid 4 and gland 3, is not easy to slide
It is dynamic, it advantageously reduces issuable filler when valve working and loosens, reducing leakage may.
10 lower section of packing layer is corresponded in stuffing-box is also equipped with two matrix liners 5, each matrix liner 5 around valve rod 2
Lower section is equipped with elastic element 6 around valve rod 2,1 elasticity of elastic element 6 and bonnet, positioned at 5 lower section of matrix liner of bottom
Connect；Elastic element 6 is butterfly spring.
In the present solution, can produce in 10 bottom design flexibility element 6 of packing layer using matrix liner 5 and butterfly spring
Characteristic, using butterfly spring, deflection changes and the constant characteristic of output loads in certain variations section, effectively adaptation valve
The sealing pressing force generated in door frequent movement work to packing layer 10, valve is made up by the characteristic of butterfly spring and is frequently moved
The variation that 10 pretightning force of packing layer occurs in work makes packing layer 10 keep keeping stability from Pre strained state, reduces and go out at filler
The possibility now revealed.
A kind of preload filling-material structure certainly being designed in this way, is based on existing filling-material structure, structure is simple, and design rationally, has
The elastic characteristic of elastic element 6 is utilized in effect, makes up the variation that 10 pretightning force of packing layer occurs in valve frequent movement, makes filler
Layer 10 keeps keeping stability from Pre strained state, reduces at filler and the possibility revealed occurs.
It is enlightenment, through the above description, related work people with the above-mentioned desirable embodiment according to the utility model
Member can carry out various changes and amendments in the range of without departing from this item utility model technical idea completely.This item is real
It is not limited to the contents of the specification with novel technical scope, it is necessary to its technology is determined according to scope of the claims
Property range.
Claims (4)
1. a kind of from preload filling-material structure, including bonnet, (1), valve rod (2), gland (3) and hold-down grid (4), valve rod
(2) setting forms stuffing-box at bonnet, (1) center and between bonnet, (1) inner wall, is filled in the stuffing-box
Packing layer (10), gland (3) are crimped on the packing layer in stuffing-box (10), it is characterised in that: right in the stuffing-box
It answers and is also equipped at least one matrix liner (5) around valve rod (2) below packing layer (10), surround below each matrix liner (5)
Valve rod is equipped with elastic element (6), the elastic element (6) below the matrix liner (5) of bottom and the elastic phase of bonnet, (1)
It connects；It is equipped with threaded hole around valve rod (2) on described bonnet, (1) upper surface, is connected with studs in the threaded hole
(7), the screw thread hole site that bonnet, is corresponded on hold-down grid (4) is separately provided with threaded hole, described studs (7) one end and upper valve
The threaded hole for covering (1) is threadedly coupled, and the other end is screwed by nut (8) and the threaded hole of hold-down grid (4).
2. as described in claim 1 a kind of from preload filling-material structure, it is characterised in that: the elastic element (6) is butterfly
Spring.
3. as claimed in claim 2 a kind of from preload filling-material structure, it is characterised in that: correspond to packing layer in the stuffing-box
(10) lower section is set around valve rod (2) there are two matrix liner (5), and each matrix liner (5) lower section is equipped with butterfly around valve rod (2)
Spring.
4. as described in claim 1 a kind of from preload filling-material structure, it is characterised in that: described hold-down grid (4) lower end surface
With arc-shaped cavity, there is the arcwall face (9) cooperated with arc-shaped cavity at the top of the gland (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822153201.1U CN209245442U (en) | 2018-12-20 | 2018-12-20 | It is a kind of to pre-tighten filling-material structure certainly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822153201.1U CN209245442U (en) | 2018-12-20 | 2018-12-20 | It is a kind of to pre-tighten filling-material structure certainly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209245442U true CN209245442U (en) | 2019-08-13 |
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ID=67534027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822153201.1U Active CN209245442U (en) | 2018-12-20 | 2018-12-20 | It is a kind of to pre-tighten filling-material structure certainly |
Country Status (1)
| Country | Link |
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| CN (1) | CN209245442U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111237495A (en) * | 2020-02-25 | 2020-06-05 | 四川精控阀门制造有限公司 | Flat gate valve filler pre-tightening structure and flat gate valve |
| CN112283077A (en) * | 2020-10-29 | 2021-01-29 | 四川大川压缩机有限责任公司 | Sealing structure of compressor |
-
2018
- 2018-12-20 CN CN201822153201.1U patent/CN209245442U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111237495A (en) * | 2020-02-25 | 2020-06-05 | 四川精控阀门制造有限公司 | Flat gate valve filler pre-tightening structure and flat gate valve |
| CN112283077A (en) * | 2020-10-29 | 2021-01-29 | 四川大川压缩机有限责任公司 | Sealing structure of compressor |
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