CN204828912U - Valve packing structure - Google Patents
Valve packing structure Download PDFInfo
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- CN204828912U CN204828912U CN201520553749.9U CN201520553749U CN204828912U CN 204828912 U CN204828912 U CN 204828912U CN 201520553749 U CN201520553749 U CN 201520553749U CN 204828912 U CN204828912 U CN 204828912U
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- packing
- filler
- valve
- gland
- pack
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Abstract
The utility model discloses a seal structure, especially a valve packing structure. The utility model provides an alleviate the valve packing structure that high -pressure medium erodees to the filler, including valve body, valve rod, filler packing and the pressure cover that packs, be provided with the packing cavity on the valve body, pack pads, filler packing, pack and press that cover, gland are supreme under from to be installed in the packing cavity in proper order, the valve rod passes pads that pack, filler packing, packs and presses set, the gland admission valve is internal, gland, pack to press cover, filler packing, the pad that packs is on tightly the valve body is placed in to the earth pressure by the bolt, pack to fill up and to be the tubulose, be equipped with at least two rings connected in star along the axial is spaced apart on its inner wall, above -mentioned structure can realize that multistage throttle steps down, and pressure has reduced much when reacing the filler packing, has just so reduced the medium tight power required to the filler packing, has also reduced medium erodeing the filler packing to extension filler life.
Description
Technical field
The utility model relates to a kind of sealing configuration, especially a kind of valve packing sealing configuration.
Background technique
Packing seal structure is general to be used in valve field, and it is advantageous that and be convenient to regulate, filler pressing sleeve is located on valve rod by this structure, when filler packing leaks, to the pressurization of filler packing, filler packing cross section is strengthened and again realizes sealing.But, fast in high pressure valve ubiquity filler packing erosive wear, leak outside serious, the problem that working life is short.Traditional high pressure valve is common fillers pad+packing box root architecture, only consider filler packing sealing function, have ignored along with valve switch, the wearing and tearing that valve rod and the relative movement of filler packing cause and high-pressure medium wash away filler, cause valve leakage out of steam system serious, light then affect equipment use efficiency, heavy then cause production suspension induced losses.
Model utility content
Technical problem to be solved in the utility model is to provide a kind of valve packing sealing configuration alleviating high-pressure medium and wash away filler.
The utility model solves the valve packing sealing configuration that its technical problem adopts, comprise valve body, valve rod, Packing seat, filler packing, Gland and filler pressing sleeve, described valve body is provided with packing cavity, described Packing seat, filler packing, filler pressing sleeve, Gland are arranged in packing cavity from bottom to up successively, described valve rod enters in valve body through Packing seat, filler packing, filler pressing sleeve, Gland, and described Gland, filler pressing sleeve, filler packing, Packing seat are pressed in packing cavity by bolt; Described Packing seat in a tubular form, spaced apartly vertically on the inwall of Packing seat is provided with at least two annular grooves.
Further, the cross section of the annular groove of described Packing seat is rectangle.
The beneficial effects of the utility model are: owing to have employed the Packing seat of band annular groove, when MEDIA FLOW is through Packing seat first annular groove, through throttling, speedup, dilatation, completes a reducing pressure by regulating flow process, and then repeat previous process; When MEDIA FLOW is through Packing seat second annular groove, complete again a pressure reduction, through multistage throttle step-down, during arrival filler packing, pressure has reduced a lot, which reduces medium and alleviate tight power needed for filler packing, decrease medium washing away filler packing, thus to extend filler working life.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Component, position and numbering in figure: valve body 1, valve rod 2, filler packing 3, filler pressing sleeve 4, Gland 5, Packing seat 6, annular groove 7.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.All with normal valve installation as a reference, the operating end namely shown in Fig. 1 is at upper valve for upper and lower relation herein.
As shown in Figure 1, the utility model comprises valve body 1, valve rod 2, filler packing 3 and filler pressing sleeve 4, described valve body 1 is provided with packing cavity, described Packing seat 6, filler packing 3, filler pressing sleeve 4, Gland 5 are arranged in packing cavity from bottom to up successively, described valve rod 2 enters in valve body 1 through Packing seat 6, filler packing 3, filler pressing sleeve 4, Gland 5, and described Gland 5, filler pressing sleeve 4, filler packing 3, Packing seat 6 are pressed in packing cavity tightly by bolt; Described Packing seat 6 in a tubular form, spaced apartly vertically on the inwall of Packing seat 6 is provided with at least two annular grooves 7, and the cross section of annular groove 7 is rectangle; Filler packing 3, filler pressing sleeve 4, Gland 5 are with traditional packing seal and indifference, it makes Gland 5 apply pressure by bolt thus makes filler pressing sleeve 4 compress filler packing 3, filler packing 3 highly diminishes, radius becomes large, thus can regulate the sealing effect of filler packing 3.
Valve pressure is higher, and the tight power needed for filler packing 3 is larger, and medium is more to washing away of filler packing 3, and valve rod 2 is also more with the wearing and tearing of filler packing 3; And the utility model employs Packing seat 6, when MEDIA FLOW is through Packing seat 6 first annular grooves 7, through throttling, speedup, dilatation, completes a reducing pressure by regulating flow process, and then repeats previous process; When MEDIA FLOW is through Packing seat 6 second annular grooves 7, complete again a pressure reduction, through multistage throttle step-down, during arrival filler packing 3, pressure medium has reduced a lot, so just alleviate the tight power needed for filler packing 3, decrease medium to wash away filler packing 3, thus extend filler packing 3 working life.
Claims (2)
1. valve packing sealing configuration, comprise valve body (1), valve rod (2), Packing seat (6), filler packing (3), Gland (5) and filler pressing sleeve (4), (1) is provided with packing cavity to described valve body, described Packing seat (6), filler packing (3), filler pressing sleeve (4), Gland (5) is arranged in packing cavity from bottom to up successively, described valve rod (2) is through Packing seat (6), filler packing (3), filler pressing sleeve (4), Gland (5) enters in valve body (1), described Gland (5), filler pressing sleeve (4), filler packing (3), Packing seat (6) is pressed in packing cavity by bolt, it is characterized in that: described Packing seat (6) in a tubular form, spaced apartly vertically on the inwall of Packing seat (6) is provided with at least two annular grooves (7).
2. valve packing sealing configuration as claimed in claim 1, is characterized in that: the cross section of the annular groove (7) of described Packing seat (6) is rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520553749.9U CN204828912U (en) | 2015-07-28 | 2015-07-28 | Valve packing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520553749.9U CN204828912U (en) | 2015-07-28 | 2015-07-28 | Valve packing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204828912U true CN204828912U (en) | 2015-12-02 |
Family
ID=54686515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520553749.9U Active CN204828912U (en) | 2015-07-28 | 2015-07-28 | Valve packing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204828912U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107542970A (en) * | 2016-06-23 | 2018-01-05 | 天津市滨海华义阀门有限公司 | The sealing structure of gate valve rod |
-
2015
- 2015-07-28 CN CN201520553749.9U patent/CN204828912U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107542970A (en) * | 2016-06-23 | 2018-01-05 | 天津市滨海华义阀门有限公司 | The sealing structure of gate valve rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |