CN202327244U - Lift check valve for nitrogen sulfurization - Google Patents
Lift check valve for nitrogen sulfurization Download PDFInfo
- Publication number
- CN202327244U CN202327244U CN2011205112931U CN201120511293U CN202327244U CN 202327244 U CN202327244 U CN 202327244U CN 2011205112931 U CN2011205112931 U CN 2011205112931U CN 201120511293 U CN201120511293 U CN 201120511293U CN 202327244 U CN202327244 U CN 202327244U
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- CN
- China
- Prior art keywords
- valve
- flap
- check valve
- nitrogen
- lift check
- 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 - Lifetime
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Abstract
The utility model belongs to the field of chemical engineering, and in particular relates to a check valve for controlling the flow of media on a chemical engineering pipeline. A valve body of a lift check valve for nitrogen sulfurization is internally provided with a valve seat; an upper mounting port and a lower mounting port are arranged on two sides of the valve seat; a valve cover is arranged in the upper mounting port through a thread; the lower mounting port is internally provided with a positioning nut through a thread; the valve cover and the positioning nut are internally provided with a shaft port respectively; a valve core consists of a valve rod, a valve clack and a spring; two ends of the valve core are movably arranged in the shaft ports of the valve cover and the positioning nut respectively; the spring is arranged in the shaft port of the valve cover and one end of the spring props against the upper end part of the valve core; the valve clack is arranged in the middle of the valve rod; the front part of the valve clack is provided with a teflon seal gasket; and the teflon seal gasket props against the valve seat. The check valve provided by the utility model meets the all-steel radial tyre nitrogen sulfurization high-temperature technological condition, the rapid close of the valve clack can be realized, and meanwhile, the structure can meet the horizontal or longitudinal mounting of the lift check valve.
Description
Technical field
The utility model belongs to chemical field, relates in particular to a kind of safety check that control media flows on the chemical industry pipeline.
Background technique
In existing all-steel radial tyre manufacture process; Tire nitrogen sulfuration process is that the fetus with forming is positioned in the vulcanizer model; Through specific temperature, pressure, time three relevant sulfuration key elements; Each parts is become one densely, reach physical and mechanical properties and overall size that the designing technique expection requires.The medium of radial tire nitrogen sulfuration: nitrogen and high temperature, high pressure steam, and the effect of vulcanizer valve group is exactly to control the action time of curing medium and order.The medium that prevents of the effect of Lift check valve flows backwards.The high temperature that uses in the nitrogen sulfuration process, high pressure steam, temperature is the highest can to reach 280 ℃, and the sealing material of existing Lift check valve flap is a teflon, and is aging serious after use a period of time, influences the sealing of safety check.Its spool is to drop on the valve seat by deadweight, and pass valve speed is slow.Exist defective on the structure simultaneously, stuck fault appears in spool easily.
Summary of the invention
In order to solve the technological deficiency that above-mentioned safety check exists; The purpose of the utility model provides the Lift check valve that is used for the nitrogen sulfuration; This safety check satisfies all-steel radial tyre nitrogen sulfuration high-temperature technology condition; Can realize the quick closedown of flap, this structure can satisfy the installation of Lift check valve at level or vertical direction simultaneously.
In order to realize above-mentioned purpose, the technological scheme below the utility model has adopted:
The Lift check valve that is used for the nitrogen sulfuration; This safety check comprises valve body, spool and valve gap, and the inside of valve body is provided with into medium holes and goes out medium holes, is advancing medium holes and going out to be provided with valve seat between the medium holes; Be respectively arranged with mount inlet and following mount inlet in the both sides of valve seat; Described valve gap is arranged in the mount inlet through screw thread, is provided with setscrew nut through screw thread in the following mount inlet, is respectively equipped with the axle mouth in valve gap and the setscrew nut; Described spool is made up of valve rod, flap and spring; The two ends of spool are movably set in respectively in the axle mouth of valve gap and setscrew nut, and the axle mouthful upper end portion interior and an end and spool that described spring is arranged on valve gap offsets, and described flap is arranged at the middle part of valve rod; The front portion of flap is provided with the polytetrafluoroethylene sealing gasket sheet, and the polytetrafluoroethylene sealing gasket sheet is owing to the effect and the described valve seat of spring offset.
As further improvement, the upper end of above-mentioned valve rod is provided with step surface, is provided with seal washer between the upper end of flap and valve rod.Prevent that medium from passing through the gap leakage between flap and the valve rod.
As further improvement, above-mentioned polytetrafluoroethylene sealing gasket sheet is fixedly installed on the valve rod through self-locking nut and retaining washer, and offsets with flap.
As further improvement, be provided with first pad between above-mentioned valve gap and the last mount inlet, be provided with second pad between setscrew nut and the following mount inlet.
As further improvement, the outside of above-mentioned valve body is provided with adpting flange.
The utility model is owing to adopted above-mentioned technological scheme; Improvement to flap sealing material and spool, valve body structure; To satisfy all-steel radial tyre nitrogen sulfuration high-temperature technology condition; The terminal spring structure that increases of spool can be realized the quick closedown of flap, and this structure can satisfy the installation of Lift check valve at level or vertical direction simultaneously.The utlity model has characteristics simple in structure, easy to install and use.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the utility model is done a detailed explanation.
The Lift check valve that is used for the nitrogen sulfuration as shown in Figure 1; This safety check comprises valve body 1, spool 3 and valve gap 2; The outside of valve body 1 is provided with adpting flange 16, and the inside of valve body 1 is provided with into medium holes 14 and goes out medium holes 15, is advancing medium holes 14 and going out to be provided with valve seat 11 between the medium holes 15; Be respectively arranged with mount inlet 12 and following mount inlet 13 in the both sides of valve seat 11; Described valve gap 2 is arranged in the mount inlet 12 through screw thread, is provided with setscrew nut 6 through screw thread in the following mount inlet 13, is provided with first pad 21 between valve gap 2 and the last mount inlet 12; Be provided with second pad 61 between setscrew nut 6 and the following mount inlet 13, and in valve gap 2 and setscrew nut 6, be respectively equipped with the axle mouth.
As shown in Figure 1, described spool 3 is made up of valve rod 31, flap 4 and spring 7, and the upper end of valve rod 31 is provided with step surface 32, is provided with seal washer 33 between the upper end of flap 4 and valve rod 31.Connecting base 32 is movably set in the mouth of valve gap 2, and an axle mouthful interior also end and connecting base 32 that described spring 7 is arranged on valve gap 2 offset; Problems such as the underpart of spool 3 is movably set in the mouth of setscrew nut 6, and valve rod 31 can endwisely slip at the axle mouth of valve gap 2 and the axle mouth of setscrew nut 6 freely, and the solution spool is often stuck.Described flap 4 is arranged at the middle part of valve rod 31; The front portion of flap 4 is provided with polytetrafluoroethylene sealing gasket sheet 5; Polytetrafluoroethylene sealing gasket sheet 5 is fixedly installed on the valve rod 31 through self-locking nut 34 and retaining washer 35; And offset with flap 4, polytetrafluoroethylene sealing gasket sheet 5 since the effect and the described valve seat 11 of spring 7 offset.
When safety check inside led to medium, spool contacted the polytetrafluoroethylene sealing gasket sheet 5 on the flap 4 on valve seat 11 through the active force of spring 7 closely, realized closing function.When safety check feeding medium, the active force that the thrust of medium makes spool 3 overcome spring 7 moves upward, and realizes the folding function.
Claims (5)
1. the Lift check valve that is used for the nitrogen sulfuration; It is characterized in that: this safety check comprises valve body, spool and valve gap, and the inside of valve body is provided with into medium holes and goes out medium holes, is advancing medium holes and going out to be provided with valve seat between the medium holes; Be respectively arranged with mount inlet and following mount inlet in the both sides of valve seat; Described valve gap is arranged in the mount inlet through screw thread, is provided with setscrew nut through screw thread in the following mount inlet, is respectively equipped with the axle mouth in valve gap and the setscrew nut; Described spool is made up of valve rod, flap and spring; The two ends of spool are movably set in respectively in the axle mouth of valve gap and setscrew nut, and the axle mouthful upper end portion interior and an end and spool that described spring is arranged on valve gap offsets, and described flap is arranged at the middle part of valve rod; The front portion of flap is provided with the polytetrafluoroethylene sealing gasket sheet, and the polytetrafluoroethylene sealing gasket sheet is owing to the effect and the described valve seat of spring offset.
2. the Lift check valve that is used for the nitrogen sulfuration according to claim 1, it is characterized in that: the upper end of valve rod is provided with step surface, is provided with seal washer between the upper end of flap and valve rod.
3. the Lift check valve that is used for the nitrogen sulfuration according to claim 1, it is characterized in that: the polytetrafluoroethylene sealing gasket sheet is fixedly installed on the valve rod through self-locking nut and retaining washer, and offsets with flap.
4. the Lift check valve that is used for the nitrogen sulfuration according to claim 1 is characterized in that: be provided with first pad between valve gap and the last mount inlet, be provided with second pad between setscrew nut and the following mount inlet.
5. the Lift check valve that is used for the nitrogen sulfuration according to claim 1, it is characterized in that: the outside of valve body is provided with adpting flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205112931U CN202327244U (en) | 2011-12-09 | 2011-12-09 | Lift check valve for nitrogen sulfurization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205112931U CN202327244U (en) | 2011-12-09 | 2011-12-09 | Lift check valve for nitrogen sulfurization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202327244U true CN202327244U (en) | 2012-07-11 |
Family
ID=46439223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205112931U Expired - Lifetime CN202327244U (en) | 2011-12-09 | 2011-12-09 | Lift check valve for nitrogen sulfurization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202327244U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763891A (en) * | 2016-12-23 | 2017-05-31 | 张家港久益机械有限公司 | A kind of cylinder driving-type sulfiding gas valve |
| CN114054224A (en) * | 2020-07-30 | 2022-02-18 | 无锡小天鹅电器有限公司 | Spraying device and washing system |
-
2011
- 2011-12-09 CN CN2011205112931U patent/CN202327244U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763891A (en) * | 2016-12-23 | 2017-05-31 | 张家港久益机械有限公司 | A kind of cylinder driving-type sulfiding gas valve |
| CN114054224A (en) * | 2020-07-30 | 2022-02-18 | 无锡小天鹅电器有限公司 | Spraying device and washing system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |