CN104633263A - Packing seal structure - Google Patents
Packing seal structure Download PDFInfo
- Publication number
- CN104633263A CN104633263A CN201510068453.2A CN201510068453A CN104633263A CN 104633263 A CN104633263 A CN 104633263A CN 201510068453 A CN201510068453 A CN 201510068453A CN 104633263 A CN104633263 A CN 104633263A
- Authority
- CN
- China
- Prior art keywords
- packing layer
- valve rod
- convex peak
- packing
- groove
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
- Sealing Devices (AREA)
Abstract
The invention discloses a packing seal structure. A packing material is formed by overlaying of an upper packing layer, a middle packing layer and a lower packing layer through grooves and profile peaks, a first V-shaped groove is formed in the lower surface of the upper packing layer, a first inverted V-shaped profile peak which is matched with the first V-shaped groove is disposed on the upper surface of the middle packing layer, a second V-shaped groove is designed in the lower surface of the middle packing layer, a second inverted V-shaped profile peak which is matched with the second V-shaped groove is mounted on the upper surface of the lower packing layer, the grooves and the profile peaks are asymmetric, that is, inclination angles between the grooves and inner hole attachment sides of a packing box and between the profile peaks and the inner hole attachment sides of the packing box are the same, inclination angles between the grooves and the attachment side of a valve rod are smaller than those between the profile peaks and the attachment side of the valve rod, and cavities are formed between the grooves and the profile peaks of the attachment side of the valve rod. The packing seal structure is reasonable in structure, reliable in sealing, free from maintaining and long in service life.
Description
Technical field
The present invention relates to a kind of packing seal structure.
Background technique
The nonmetal V-type filler of prior art, groove symplex structure angle that is upper, middle filler is 90 °, in, the convex peak symplex structure of lower filler, angle is generally 95 °, and during installation, stacked combination puts into the stuffing box of valve body, compresses Gland, fit in groove resiliently deformable and convex peak, thus in, the inner circumference of upper filler and valve rod fit tightly, excircle and stuffing box inwall fit tightly, and realize sealing.As time goes on shortcoming is, one is elastic stress decay, and seal pressure decrescence, loses sealing function to certain value, and two is inner peripheral surface and valve rod relative motion, unavoidably has wearing and tearing, certainly will make seal pressure decrescence.
Summary of the invention
The object of the present invention is to provide a kind of rational in infrastructure, sealing is reliable, the packing seal structure of long service life.
Technical solution of the present invention is:
A kind of packing seal structure, comprise valve rod, valve body, between valve rod and valve body, stuffing box is set, stuffing box arranges Gland, filler is filled with in stuffing box, it is characterized in that: described filler is by upper packing layer, middle packing layer, lower packing layer passes through groove, convex peak is superimposed with each other composition, the lower surface of upper packing layer arranges the first v-depression, the upper surface of middle packing layer arranges the first convex peak of reversed V-shape coordinated with the first v-depression, the lower surface of middle packing layer arranges the second v-depression, the upper surface of lower packing layer arranges the second convex peak of reversed V-shape coordinated with the second v-depression, above-mentioned groove, convex peak are unsymmetric form, namely the fit angle of inclination of side of groove, convex peak and stuffing box endoporus is identical, the fit angle of inclination of side of groove and valve rod is less than convex peak and valve rod and fits the angle of inclination of side, valve rod is fitted between the groove of side and convex peak and forms cavity.
The present invention is rational in infrastructure, after compression Gland, filler outer circumferential side closely and stuffing box inwall fit, closely fit with valve rod cylindrical in inner circumferential side, but because of concavo-convex angle difference comparatively greatly, formation cavity, so the good springiness of stem side, seal pressure is little, and friction torque is little, in working order, pressure medium enters cavity, and form self-powering type sealing mechanism, working pressure is higher, seal more reliable, freedom from repairs, long service life.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is the structural representation of upper packing layer.
Fig. 3 is the structural representation of middle packing layer.
Fig. 4 is the structural representation of lower packing layer.
Embodiment
A kind of packing seal structure, comprise valve rod 1, valve body 2, stuffing box 3 is set between valve rod and valve body, stuffing box is arranged Gland 4, filler is filled with in stuffing box, described filler is by upper packing layer 5, middle packing layer 6, lower packing layer 7 passes through groove, convex peak is superimposed with each other composition, the lower surface of upper packing layer arranges the first v-depression 8, the upper surface of middle packing layer arranges the first convex peak 9 of reversed V-shape coordinated with the first v-depression, the lower surface of middle packing layer arranges the second v-depression 10, the upper surface of lower packing layer arranges the second convex peak 11 of reversed V-shape coordinated with the second v-depression, above-mentioned groove, convex peak are unsymmetric form, namely groove, convex peak and stuffing box endoporus are fitted the angle of inclination identical (being 45 °) of side, the fit angle of inclination of side of groove and valve rod is less than convex peak and valve rod and fits the angle of inclination (i.e. α=β < 45 °) of side, valve rod is fitted between the groove of side and convex peak and forms cavity 12.
Claims (1)
1. a packing seal structure, comprise valve rod, valve body, between valve rod and valve body, stuffing box is set, stuffing box arranges Gland, filler is filled with in stuffing box, it is characterized in that: described filler is by upper packing layer, middle packing layer, lower packing layer passes through groove, convex peak is superimposed with each other composition, the lower surface of upper packing layer arranges the first v-depression, the upper surface of middle packing layer arranges the first convex peak of reversed V-shape coordinated with the first v-depression, the lower surface of middle packing layer arranges the second v-depression, the upper surface of lower packing layer arranges the second convex peak of reversed V-shape coordinated with the second v-depression, above-mentioned groove, convex peak are unsymmetric form, namely the fit angle of inclination of side of groove, convex peak and stuffing box endoporus is identical, the fit angle of inclination of side of groove and valve rod is less than convex peak and valve rod and fits the angle of inclination of side, valve rod is fitted between the groove of side and convex peak and forms cavity.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510068453.2A CN104633263A (en) | 2015-02-10 | 2015-02-10 | Packing seal structure |
| PCT/CN2015/083829 WO2016127564A1 (en) | 2015-02-10 | 2015-07-11 | Filler sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510068453.2A CN104633263A (en) | 2015-02-10 | 2015-02-10 | Packing seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104633263A true CN104633263A (en) | 2015-05-20 |
Family
ID=53212328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510068453.2A Pending CN104633263A (en) | 2015-02-10 | 2015-02-10 | Packing seal structure |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104633263A (en) |
| WO (1) | WO2016127564A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016127564A1 (en) * | 2015-02-10 | 2016-08-18 | 江苏神通阀门股份有限公司 | Filler sealing structure |
| CN112283439A (en) * | 2020-10-20 | 2021-01-29 | 吴忠仪表有限责任公司 | Straight stroke gradient packing sealing structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0084513A1 (en) * | 1982-01-07 | 1983-07-27 | Xomox Corporation | Fluid valve and method of making same |
| US5201532A (en) * | 1991-12-12 | 1993-04-13 | Mark Controls Corporation | Flexible non-planar graphite sealing ring |
| CN101495786A (en) * | 2006-07-12 | 2009-07-29 | 株式会社开滋 | Shaft seal packing and shaft seal structure for valve |
| CN201763962U (en) * | 2010-08-31 | 2011-03-16 | 宁波星箭航天机械厂 | Manual stop valve |
| CN204477475U (en) * | 2015-02-10 | 2015-07-15 | 江苏神通阀门股份有限公司 | Packing seal structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633263A (en) * | 2015-02-10 | 2015-05-20 | 江苏神通阀门股份有限公司 | Packing seal structure |
-
2015
- 2015-02-10 CN CN201510068453.2A patent/CN104633263A/en active Pending
- 2015-07-11 WO PCT/CN2015/083829 patent/WO2016127564A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0084513A1 (en) * | 1982-01-07 | 1983-07-27 | Xomox Corporation | Fluid valve and method of making same |
| US5201532A (en) * | 1991-12-12 | 1993-04-13 | Mark Controls Corporation | Flexible non-planar graphite sealing ring |
| CN101495786A (en) * | 2006-07-12 | 2009-07-29 | 株式会社开滋 | Shaft seal packing and shaft seal structure for valve |
| CN201763962U (en) * | 2010-08-31 | 2011-03-16 | 宁波星箭航天机械厂 | Manual stop valve |
| CN204477475U (en) * | 2015-02-10 | 2015-07-15 | 江苏神通阀门股份有限公司 | Packing seal structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016127564A1 (en) * | 2015-02-10 | 2016-08-18 | 江苏神通阀门股份有限公司 | Filler sealing structure |
| CN112283439A (en) * | 2020-10-20 | 2021-01-29 | 吴忠仪表有限责任公司 | Straight stroke gradient packing sealing structure |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016127564A1 (en) | 2016-08-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150520 |