CN104913107A - Flexible sealing structure for valve deck and valve rod of one-way valve - Google Patents
Flexible sealing structure for valve deck and valve rod of one-way valve Download PDFInfo
- Publication number
- CN104913107A CN104913107A CN201510271770.4A CN201510271770A CN104913107A CN 104913107 A CN104913107 A CN 104913107A CN 201510271770 A CN201510271770 A CN 201510271770A CN 104913107 A CN104913107 A CN 104913107A
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- pressing plate
- valve gap
- sealing structure
- 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
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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
Abstract
The invention discloses a flexible sealing structure for a valve deck and a valve rod of a one-way valve. The elastic sealing structure for the valve deck and the valve rod of the one-way valve comprises the valve deck, and the valve rod is installed in the valve deck in a sliding mode. An annular gap is formed between the upper half section of the valve deck and the valve rod. A gasket, a lower elastic barrel, a graphite packing, an isolation casing pipe, tetrafluoromethane padding, an upper elastic barrel and a padding gland are sequentially installed in the annular gap from bottom to top. A pressing plate with which the valve rod is sleeved is arranged above the padding gland. The pressing plate is fixed to the upper end face of the valve deck through a stud connecting piece. A nut locking piece is screwed to the outer wall of the upper end of the valve deck. According to the flexible sealing structure, the structural design is novel, upper sealing padding and lower sealing padding are isolated by the isolation casing pipe, the compactness of the sealing padding is ensured when the pressing plate is pressed down by means of the cooperation between the elasticity of the elastic barrels and the isolation of the isolation casing pipe, the sealing performance is improved, and the valve service life is prolonged.
Description
technical field:
The present invention relates to one-way valve, particularly relate to a kind of one-way valve valve gap and valve rod flexible sealing structure.
background technique:
Sleeve one-way valve in the market the sealing of visual cognitive ability between spool and valve rod, can ensure its sealability mostly, but have ignored the sealing between valve rod and valve gap, can cause one-way valve shortening in working life equally.
summary of the invention:
In order to make up prior art problem, the object of this invention is to provide a kind of one-way valve valve gap and valve rod flexible sealing structure, effectively can ensure the flexible sealing performance between valve rod and valve gap, increasing the service life.
Technological scheme of the present invention is as follows:
One-way valve valve gap and valve rod flexible sealing structure, comprise valve gap, valve rod is slidably fitted with in valve gap, annular space is provided with between the upper semisection of valve gap and valve rod, it is characterized in that: in described annular space, liner, lower spring cylinder, graphite packing, disrance sleeve, tetrafluoro filler, upper spring cylinder, Gland are installed from bottom to top successively, the top of Gland is provided with the pressing plate be sleeved on valve rod, pressing plate and described valve gap upper-end surface are fixed by Stud connection part, and the upper end outer wall of valve gap is also combined with nut lock gripping members.
Described one-way valve valve gap and valve rod flexible sealing structure, is characterized in that: described Gland lower end is stretched in annular space, and upper end stretches out valve gap upper end and described pressing plate is withstood at top.
Advantage of the present invention is:
Novel in structural design of the present invention, is isolated upper and lower stuffing box packing by disrance sleeve, coordinates the elastic performance of spring cylinder when pressing plate presses down simultaneously, ensures the tight property of stuffing box packing, improves sealability, extends the working life of valve.
accompanying drawing illustrates:
Fig. 1 is structural representation of the present invention.
embodiment:
See accompanying drawing:
One-way valve valve gap and valve rod flexible sealing structure, comprise valve gap 1, valve rod 2 is slidably fitted with in valve gap 1, annular space is provided with between the upper semisection of valve gap 2 and valve rod, in annular space, liner 3, lower spring cylinder 4, graphite packing 5, disrance sleeve 6, tetrafluoro filler 7, upper spring cylinder 8, Gland 9 are installed from bottom to top successively, the top of Gland 9 is provided with the pressing plate 10 be sleeved on valve rod, pressing plate 10 is fixed by Stud connection part 11 with valve gap 1 upper-end surface, and the upper end outer wall of valve gap 1 is also combined with nut lock gripping members 12.
Gland 9 lower end is stretched in annular space, and upper end stretches out valve gap 1 upper end and pressing plate 10 is withstood at top.
Upper and lower stuffing box packing is isolated by disrance sleeve 6 by the present invention, coordinates the elastic performance of spring cylinder when pressing plate 10 presses down simultaneously, ensures the tight property of stuffing box packing, improves sealability, extends the working life of valve.
Claims (2)
1. an one-way valve valve gap and valve rod flexible sealing structure, comprise valve gap, valve rod is slidably fitted with in valve gap, annular space is provided with between the upper semisection of valve gap and valve rod, it is characterized in that: in described annular space, liner, lower spring cylinder, graphite packing, disrance sleeve, tetrafluoro filler, upper spring cylinder, Gland are installed from bottom to top successively, the top of Gland is provided with the pressing plate be sleeved on valve rod, pressing plate and described valve gap upper-end surface are fixed by Stud connection part, and the upper end outer wall of valve gap is also combined with nut lock gripping members.
2. one-way valve valve gap according to claim 1 and valve rod flexible sealing structure, is characterized in that: described Gland lower end is stretched in annular space, and upper end stretches out valve gap upper end and described pressing plate is withstood at top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510271770.4A CN104913107A (en) | 2015-05-25 | 2015-05-25 | Flexible sealing structure for valve deck and valve rod of one-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510271770.4A CN104913107A (en) | 2015-05-25 | 2015-05-25 | Flexible sealing structure for valve deck and valve rod of one-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104913107A true CN104913107A (en) | 2015-09-16 |
Family
ID=54082417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510271770.4A Pending CN104913107A (en) | 2015-05-25 | 2015-05-25 | Flexible sealing structure for valve deck and valve rod of one-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104913107A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5791629A (en) * | 1996-10-31 | 1998-08-11 | Fisher Controls International, Inc. | Bushing-less stem guided control valve |
| CN102758964A (en) * | 2012-07-11 | 2012-10-31 | 南通高中压阀门有限公司 | Low-loss self-compensating system for filler loss |
| CN203035966U (en) * | 2012-11-15 | 2013-07-03 | 航天长征化学工程股份有限公司 | Though single-seat adjusting valve |
| CN203500584U (en) * | 2013-09-30 | 2014-03-26 | 四川耐特阀门有限公司 | Lifting type steam extraction check valve with high sealing performance |
| CN104121416A (en) * | 2013-04-24 | 2014-10-29 | 浙江欧维克阀门有限公司 | Packing sealing maintenance-free structure of built-in pre-tightening valve rod |
| CN104315246A (en) * | 2014-09-29 | 2015-01-28 | 重庆川武仪表有限公司 | Packing sealing structure of needle-shaped cutoff valve |
| CN204677879U (en) * | 2015-05-25 | 2015-09-30 | 蚌埠南自仪表有限公司 | A kind of one-way valve valve gap and valve rod flexible sealing structure |
-
2015
- 2015-05-25 CN CN201510271770.4A patent/CN104913107A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5791629A (en) * | 1996-10-31 | 1998-08-11 | Fisher Controls International, Inc. | Bushing-less stem guided control valve |
| CN102758964A (en) * | 2012-07-11 | 2012-10-31 | 南通高中压阀门有限公司 | Low-loss self-compensating system for filler loss |
| CN203035966U (en) * | 2012-11-15 | 2013-07-03 | 航天长征化学工程股份有限公司 | Though single-seat adjusting valve |
| CN104121416A (en) * | 2013-04-24 | 2014-10-29 | 浙江欧维克阀门有限公司 | Packing sealing maintenance-free structure of built-in pre-tightening valve rod |
| CN203500584U (en) * | 2013-09-30 | 2014-03-26 | 四川耐特阀门有限公司 | Lifting type steam extraction check valve with high sealing performance |
| CN104315246A (en) * | 2014-09-29 | 2015-01-28 | 重庆川武仪表有限公司 | Packing sealing structure of needle-shaped cutoff valve |
| CN204677879U (en) * | 2015-05-25 | 2015-09-30 | 蚌埠南自仪表有限公司 | A kind of one-way valve valve gap and valve rod flexible sealing structure |
Non-Patent Citations (1)
| Title |
|---|
| 陆培文: "《实用阀门设计手册 第3版》", 31 October 2012, 机械工业出版社 * |
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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: 20150916 |