CN202441935U - Easy-to-maintain bellows-type safety valve - Google Patents
Easy-to-maintain bellows-type safety valve Download PDFInfo
- Publication number
- CN202441935U CN202441935U CN2012200018961U CN201220001896U CN202441935U CN 202441935 U CN202441935 U CN 202441935U CN 2012200018961 U CN2012200018961 U CN 2012200018961U CN 201220001896 U CN201220001896 U CN 201220001896U CN 202441935 U CN202441935 U CN 202441935U
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- China
- Prior art keywords
- valve
- bellows
- spring
- disc holder
- valve rod
- 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 - Fee Related
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Abstract
The utility model discloses an easy-to-maintain bellows-type safety valve which comprises a valve body, a valve seat, a valve clack, a disc holder, a bellows, a valve rod, a spring, a spring sleeve and a valve bonnet, wherein the valve bonnet is arranged at the top end of the spring sleeve, the bottom end of the spring sleeve is connected with the top end of the valve body, and the valve seat is arranged at the lower end of the valve body; the valve rod passes through the spring sleeve, the top end of the valve rod is arranged in the valve bonnet, and the bottom of the valve rod is arranged in the bellows; the spring is sleeved on the valve rod and located in the spring sleeve; and a guide sleeve is arranged between the disc holder and the bellows. According to the utility model, through adding threads at the bottom end of the bellows, the bellows is in threaded connection with the disc holder; the connection relation between the disc holder and the valve clack is changed from original clamping spring connection or threaded connection into screw connection, so that a deadlock phenomenon does not occur between the disc holder and the valve clack, therefore, an improved product is more convenient to maintain, the maintenance cost is greatly lowered, and the air tightness is also guaranteed.
Description
Technical field
The utility model relates to the bellows type safety valve of a kind of safety valve, particularly a kind of easy access.
Background technique
The bellows safety valve is balanced safety valve again.Be a kind of releasing pressure automatically protective equipment of being opened by the import static pressure, mobile equilibrium outlet back-pressure surges or isolation aggressive medium are to the corrosion of spring.It is one of of paramount importance safety attachment of pressurized container, and its function is: when container inner pressure surpasses certain certain value, rely on the automatic Open valve of pressure of medium self, discharge the medium of some rapidly.When the pressure in the container dropped to permitted value, valve cut out again automatically, made container inner pressure be lower than the upper limit of authorized pressure all the time, prevented the accident that possibly occur because of superpressure, the final protective gear of pressurized container so the bellows safety valve is otherwise known as automatically.The bellows safety valve is applicable to that mainly outlet exists fluctuation back pressure, Korrosionsmedium, on the equipment and pipeline of media such as the air of operating temperature≤300 ℃, steam, petroleum gas, as overpressure protector.When equipment and pipeline inner pressure surpassed permitted value, valve was opened automatically, full dose discharging then; When pressure was reduced to specified value, valve was closed automatically, guaranteed equipment safety operation.Be widely used at present in the industry such as electric power, metallurgy, oil, chemical industry.In order to guarantee the seal of safety valve; Therefore bellows and the valve rod of existing bellows type safety valve all weld together, but safety valve when reality is used, need regularly study, when finding bellows appearance damage; Then need need whole replacement, so cost of production is very high.
The model utility content
The purpose of the utility model is to have the deficiency that maintenance is inconvenient, maintenance cost is high in order to overcome when above-mentioned bellows and valve rod weld, and a kind of bellows type safety valve of easy access is provided.
The technological scheme that the utility model is adopted to achieve these goals is following: a kind of bellows type safety valve of easy access; It comprises valve body, valve seat, flap, Disc holder, bellows, valve rod, spring, spring spool and bonnet; Wherein bonnet is installed in the spring spool top; The spring spool bottom connects the top of valve seat, and valve seat is installed in the valve body bottom; Said valve rod runs through spring spool, and the top is positioned at bonnet, and the bottom is positioned at bellows; Said spring housing is contained on the valve rod and is positioned at spring spool; The bottom that it is characterized in that said bellows is threaded with Disc holder; Upper end and valve body seam Spielpassung, the Disc holder upper end is set with the valve rod end portion, and the part of this Disc holder suit valve rod is sleeved in the bellows; The Disc holder lower end covers flap and adopts screw and the flap flexible connection, and flap and valve seat are through grinding-in.Also be provided with guide sleeve between said Disc holder and the bellows.
The technological scheme that is more preferably in the utility model is: establish the self-alignment cushion block in the Disc holder, this cushion block is connected with the contact of valve rod bottom.
The said valve rod that is positioned at spring spool is provided with valve rod cushion block, lower spring cup and upper spring seat, and lower spring cup is positioned on the valve rod cushion block, and the valve rod of upper spring seat top is provided with adjusting screw rod, and adjusting screw rod is fixed on the spring spool top through locking nut.The spring upper end is connected on the upper spring seat, and the lower end is connected on the lower spring cup.
Said bonnet top is provided with plug; Also be provided with on the said valve body with flap on the Adjusting ring combination jackscrew that contacts and be connected.
The utility model is through setting up screw thread in the bellows bottom; Thereby make and be threaded between bellows and the Disc holder; Secondly Disc holder is connected by original jump ring with annexation between the flap or is threaded and be improved to screw and connect, so stuck phenomenon can not occur between Disc holder and the flap, thus the convenient maintenance of product after the improvement; Greatly reduce maintenance cost, and tightness is guaranteed also.
Description of drawings
Fig. 1 is the utility model structural representation.
Among the figure: the 1-valve seat, 2-pad I, the 3-valve body, 4-makes up jackscrew, 5-Adjusting ring, 6-flap, 7-Disc holder; 8-pad II, 9-bellows, 10-cushion block, 11-valve rod, 12-guide sleeve, 13-pad III; The 14-bolt, 15-valve rod cushion block, 16-lower spring cup, 17-spring, 18-spring spool, 19-upper spring seat; 20, adjusting screw rod, 21-pad IV, 22-locking nut, 23-bonnet, 24-pad V, 25-plug.
Embodiment
Technological scheme below in conjunction with accompanying drawing the utility model further specifies, but the utility model is not limited in following mode of execution.
As shown in Figure 1: a kind of bellows type safety valve of easy access, it comprises valve body 3, valve seat 1, flap 6, Disc holder 7, bellows 9, valve rod 11, spring 17, spring spool 18 and bonnet 23.Wherein bonnet 23 is installed in spring spool 18 tops, and spring spool 18 bottoms connect the top of valve body 3, specifically be fixedly connected valve body 3 through bolt 14, and bonnet 23 is provided with the pad IV with spring spool 18 joints.Valve seat 1 is installed on the valve body 3, is provided with the pad I between the two.Said valve rod 11 runs through spring spool 18, and the top is positioned at bonnet 23, and the bottom is positioned at bellows 9; Said spring 17 is sleeved on the valve rod 11 and is positioned at spring spool 18.The bottom of said bellows 9 is provided with screw thread; The bottom of bellows just can be threaded with Disc holder 7 like this; Guaranteed the seal dismounting as required simultaneously of safety valve; The upper end of bellows and valve body 3 seam Spielpassung, and bellows 9 bottoms and Disc holder contacting point be provided with the pad II, and the bellows upper end also is provided with the pad III with valve body 3 seam Spielpassung.Disc holder 7 upper ends are set with valve rod 11 end portions, and the part of these Disc holder 7 suit valve rods is sleeved in the bellows 9, and Disc holder 7 lower ends cover flap 6 and adopt screw and flap sealing-in mutually, and flap 6 and valve seat are through grinding-in.So just can effectively overcome existing bellows type safety valve when maintenance,, need parts such as flap and Disc holder together be replaced the problem that causes the cost increase owing to reasons such as the screw thread of jump ring or bolt is corroded cause stuck phenomenon.
Also be provided with guide sleeve 12 between said Disc holder 7 and the bellows 9, the upper end of this guide sleeve 12 and valve seat 3 weld together with spring spool 18.
Be provided with self-alignment cushion block 10 in the Disc holder 7.The valve rod that is positioned at spring spool 18 is provided with valve rod cushion block 15, lower spring cup 16 and upper spring seat 19; Lower spring cup 16 is positioned on the valve rod cushion block 15; The valve rod of upper spring seat 19 tops is provided with adjusting screw rod 20, and adjusting screw rod 20 is fixed on spring spool 18 tops through locking nut 22.Spring 17 upper ends are connected on the upper spring seat 19, and the lower end is connected on the lower spring cup 16.Bonnet 23 tops are provided with plug 25, for sealing is provided with the pad V in the joint of plug 25 and bonnet 23.Said valve seat 1 is provided with Adjusting ring 5, and valve body 3 is provided with combination jackscrew 4, and the termination contact of combination jackscrew 4 connects Adjusting ring 5, and the other end passes valve body.
Claims (6)
1. the bellows type safety valve of an easy access; It comprises valve body (3), valve seat (1), flap (6), Disc holder (7), bellows (9), valve rod (11), spring (17), spring spool (18) and bonnet (23); Wherein bonnet (23) is installed in spring spool (18) top; Spring spool (18) bottom connects the top of valve body (3), and valve seat (1) is installed in valve body (3) lower end; Said valve rod (11) runs through spring spool (18), and the top is positioned at bonnet (23), and the bottom is positioned at bellows (9); Said spring (17) is sleeved on the valve rod (11) and is positioned at spring spool (18); The bottom that it is characterized in that said bellows (9) is threaded with Disc holder (7); Upper end and valve body (3) seam Spielpassung; Disc holder (7) upper end is set with valve rod (11) end portion; The part of this Disc holder (7) suit valve rod is sleeved in the bellows (9), and Disc holder (7) lower end covers flap (6) and adopts screw and flap sealing-in mutually, and flap (6) and valve seat are through grinding-in; Also be provided with guide sleeve (12) between said Disc holder (7) and the bellows (9).
2. the bellows type safety valve of a kind of easy access according to claim 1 is characterized in that being provided with in the Disc holder (7) self-alignment cushion block (10).
3. the bellows type safety valve of a kind of easy access according to claim 1; It is characterized in that the valve rod that is positioned at spring spool (18) is provided with valve rod cushion block (15), lower spring cup (16) and upper spring seat (19); Lower spring cup (16) is positioned on the valve rod cushion block (15); The valve rod of upper spring seat (19) top is provided with adjusting screw rod (20), and adjusting screw rod (20) is fixed on spring spool (18) top through locking nut (22).
4. the bellows type safety valve of a kind of easy access according to claim 3 is characterized in that spring (17) upper end is connected on the upper spring seat (19), and the lower end is connected on the lower spring cup (16).
5. the bellows type safety valve of a kind of easy access according to claim 1 is characterized in that bonnet (23) top is provided with plug (25).
6. the bellows type safety valve of a kind of easy access according to claim 1, it is characterized in that also being provided with on the said valve body (3) with flap (6) on Adjusting ring (5) the combination jackscrew (4) that contacts and be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200018961U CN202441935U (en) | 2012-01-05 | 2012-01-05 | Easy-to-maintain bellows-type safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200018961U CN202441935U (en) | 2012-01-05 | 2012-01-05 | Easy-to-maintain bellows-type safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202441935U true CN202441935U (en) | 2012-09-19 |
Family
ID=46823386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200018961U Expired - Fee Related CN202441935U (en) | 2012-01-05 | 2012-01-05 | Easy-to-maintain bellows-type safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202441935U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633193A (en) * | 2014-12-16 | 2015-05-20 | 太原航空仪表有限公司 | Pressure regulator capable of achieving water and gas separation and constant pressure difference |
| CN106051255A (en) * | 2016-04-27 | 2016-10-26 | 江苏金晟元特种阀门股份有限公司 | Valve special for chlorine alkali |
| RU2742856C1 (en) * | 2020-07-10 | 2021-02-11 | Российская Федерация, от имени которой выступает Государственная корпорация по космической деятельности "РОСКОСМОС" | Bellows safety valve |
-
2012
- 2012-01-05 CN CN2012200018961U patent/CN202441935U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633193A (en) * | 2014-12-16 | 2015-05-20 | 太原航空仪表有限公司 | Pressure regulator capable of achieving water and gas separation and constant pressure difference |
| CN104633193B (en) * | 2014-12-16 | 2017-08-15 | 太原航空仪表有限公司 | It is a kind of to realize aqueous vapor isolation and the constant pressure regulator of pressure difference |
| CN106051255A (en) * | 2016-04-27 | 2016-10-26 | 江苏金晟元特种阀门股份有限公司 | Valve special for chlorine alkali |
| RU2742856C1 (en) * | 2020-07-10 | 2021-02-11 | Российская Федерация, от имени которой выступает Государственная корпорация по космической деятельности "РОСКОСМОС" | Bellows safety valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120919 Termination date: 20150105 |
|
| EXPY | Termination of patent right or utility model |