CN204387424U - Valve rod anti-block safety valve - Google Patents
Valve rod anti-block safety valve Download PDFInfo
- Publication number
- CN204387424U CN204387424U CN201420728018.9U CN201420728018U CN204387424U CN 204387424 U CN204387424 U CN 204387424U CN 201420728018 U CN201420728018 U CN 201420728018U CN 204387424 U CN204387424 U CN 204387424U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- gap
- seal ring
- guide sleeve
- 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 a kind of valve rod anti-block safety valve, overcome in prior art, safety valve sealing and working life Shortcomings problem.This model utility contains valve body, valve seat, valve rod, valve gap, flap, Disc holder, guide sleeve and bonnet, and the first half inner sleeve of Adjusting bolt Adjusting screw has seal ring, and the bottom of seal ring is provided with counterbalance spring.The utility model has the following advantages: inlay into seal ring by Adjusting bolt Adjusting screw and valve rod matching part, and the gap that is slidably matched of valve rod and tetrafluoro circle can be very little, avoids foreign material to enter.Due to the property of PTFE, valve rod can not be pulled in opening process, and the wear-corrosion resistance of PTFE is superior, produces any damage hardly, can reach and repeatedly open not jam for a long time.
Description
Technical field
This model utility relates to a kind of safety valve, particularly relates to a kind of valve rod anti-block safety valve.
Background technique
In prior art, the valve rod of safety valve coordinates for metal to metal with Adjusting bolt Adjusting screw, existing valve rod and Adjusting bolt Adjusting screw matching part gap are slightly large, can not coordinate very well.It is the metal that two kinds of hardness is close that existing valve rod coordinates with Adjusting bolt Adjusting screw, meets the slightly high foreign material of hardness very easily plucking valve rod, thus produces jam, and be unfavorable for the sealing of gas like this, the working life of safety valve is restricted.
Model utility content
The utility model overcomes in prior art, safety valve sealing and working life Shortcomings problem, the valve rod anti-block safety valve providing a kind of structure simple, easy to use.
Technical solution of the present utility model is, there is provided a kind of valve rod anti-block safety valve with following structure: containing valve body, valve seat, valve rod, valve gap, flap, Disc holder, guide sleeve, and bonnet, described bonnet is arranged on valve gap top, valve gap bottom connects the top of valve body, described valve seat is arranged on valve body lower end, described valve rod to be applied in valve gap and axially to install along valve gap, this valve stem tip is positioned at bonnet, its bottom is positioned at guide sleeve, spring housing to be contained on valve rod and to be positioned at valve gap, on spring, lower two ends are separately installed with upper spring seat, lower spring cup, in this Disc holder lower plane, flap is installed, on it, planar central is connected with valve rod lower end, described flap bottom surface is provided with boss, this flap is by described boss and valve base sealing, flanging and the pressing plate for sealing of described guide sleeve upper end are arranged between valve gap and bonnet, and pressing plate is arranged on the top of guide sleeve, the first half inner sleeve of Adjusting bolt Adjusting screw has seal ring, the bottom of seal ring is provided with counterbalance spring.
Described valve rod is a multidiameter shaft, and described lower spring cup is positioned at the axial boss upper end of valve rod lower end, is provided with the Adjusting bolt Adjusting screw be sleeved on valve rod above upper spring seat, and described Adjusting bolt Adjusting screw is fixed on valve gap top by locking nut.Described Adjusting bolt Adjusting screw structure is the cylindrical sleeve that outer wall is provided with screw thread, inner wall smooth.Pad is separately installed with between the flanging of described valve gap, pressing plate, guide sleeve and valve body.Described seal ring is made up of teflon.
Compared with prior art, the utility model valve rod anti-block safety valve has the following advantages: inlay into seal ring by Adjusting bolt Adjusting screw and valve rod matching part, and the gap that is slidably matched of valve rod and tetrafluoro circle can be very little, avoids foreign material to enter.Due to the property of PTFE, valve rod can not be pulled in opening process, and the wear-corrosion resistance of PTFE is superior, produces any damage hardly, can reach and repeatedly open not jam for a long time.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of the utility model valve rod anti-block safety valve;
Fig. 2 is the partial enlargement structural representation of Q in the utility model valve rod anti-block safety valve Fig. 1.
Embodiment
During accompanying drawing illustrates, label 1 is valve seat, and 2 is valve bodies, and 3 is flaps, and 4 is Disc holders, and 5 is guide sleeves, and 6 is pressing plates, 7 is lower spring cups, and 8 is springs, and 9 is valve gaps, and 10 is upper spring seats, and 11 is bonnets, 12 is Adjusting bolt Adjusting screws, and 13 is valve rods, and 14 is locking nuts, and 15 is seal rings, and 16 is counterbalance springs.
Below in conjunction with the drawings and specific embodiments, the utility model valve rod anti-block safety valve is described further: as shown in the figure, the present embodiment contains valve body 2, valve seat 1, valve rod 13, valve gap 9, flap 3, Disc holder 4, guide sleeve 5, with bonnet 11, described bonnet 11 is arranged on valve gap 9 top, valve gap 9 bottom connects the top of valve body 2, described valve seat 1 is arranged on valve body 2 lower end, described valve rod 13 to be applied in valve gap 9 and axially to install along valve gap 9, this valve rod 13 top is positioned at bonnet 11, its bottom is positioned at guide sleeve 5, spring 8 to be sleeved on valve rod 13 and to be positioned at valve gap 9, on spring 8, lower two ends are separately installed with upper spring seat 10, lower spring 87, in this Disc holder 4 lower plane, flap 3 is installed, on it, planar central is connected with valve rod 13 lower end, described flap 3 bottom surface is provided with boss, this flap 3 is sealed by described boss and valve seat 1, the flanging of described guide sleeve 5 upper end and pressing plate 6 sealing are arranged between valve gap 9 and bonnet 11, and pressing plate 6 is arranged on the top of guide sleeve 5, the first half inner sleeve of Adjusting bolt Adjusting screw 12 has seal ring 15, the bottom of seal ring 15 is provided with counterbalance spring 16.
Described valve rod 13 is a multidiameter shaft, and described lower spring 87 is positioned at the axial boss upper end of valve rod 13 lower end, is provided with the Adjusting bolt Adjusting screw 12 be sleeved on valve rod 13 above upper spring seat 10, and described Adjusting bolt Adjusting screw 12 is fixed on valve gap 9 top by locking nut 14.Described Adjusting bolt Adjusting screw 12 structure is the cylindrical sleeve that outer wall is provided with screw thread, inner wall smooth.Pad is separately installed with between the flanging of described valve gap 9, pressing plate 6, guide sleeve 5 and valve body 2.Described seal ring 15 is made up of teflon.
Claims (5)
1. a valve rod anti-block safety valve, comprise valve body (1), valve seat (2), valve rod (13), valve gap (9), flap (3), Disc holder (4), guide sleeve, with bonnet (11), described bonnet (11) is arranged on valve gap (9) top, valve gap (9) bottom connects the top of valve body (1), described valve seat (2) is arranged on valve body (1) lower end, described valve rod (13) to be applied in valve gap (9) and axially to install along valve gap (9), this valve rod (13) top is positioned at bonnet (11), its bottom is positioned at guide sleeve (5), spring (8) is sleeved on valve rod (13) and goes up and be positioned at valve gap (9), on spring (8), lower two ends are separately installed with upper spring seat (10), lower spring cup (7), in this Disc holder (4) lower plane, flap (3) is installed, on it, planar central is connected with valve rod (13) lower end, described flap (3) bottom surface is provided with boss, this flap (3) is sealed by described boss and valve seat (2), the flanging of described guide sleeve (5) upper end and pressing plate (6) sealing are arranged between valve gap (9) and bonnet (11), and pressing plate (6) is arranged on the top of guide sleeve (5), it is characterized in that: the first half inner sleeve of Adjusting bolt Adjusting screw (12) has seal ring (15), the bottom of seal ring (15) is provided with counterbalance spring (16).
2. valve rod anti-block safety valve according to claim 1, it is characterized in that: described valve rod (13) is a multidiameter shaft, described lower spring cup (7) is positioned at the axial boss upper end of valve rod (13) lower end, upper spring seat (10) top is provided with the Adjusting bolt Adjusting screw (12) be sleeved on valve rod (13), and described Adjusting bolt Adjusting screw (12) is fixed on valve gap (9) top by locking nut (14).
3. valve rod anti-block safety valve according to claim 2, is characterized in that: described Adjusting bolt Adjusting screw (12) structure is the cylindrical sleeve that outer wall is provided with screw thread, inner wall smooth.
4. valve rod anti-block safety valve according to claim 1, is characterized in that: be separately installed with pad between the flanging of described valve gap (9), pressing plate (6), guide sleeve (5) and valve body (1).
5. valve rod anti-block safety valve according to claim 1, is characterized in that: described seal ring (15) is made up of teflon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420728018.9U CN204387424U (en) | 2014-11-28 | 2014-11-28 | Valve rod anti-block safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420728018.9U CN204387424U (en) | 2014-11-28 | 2014-11-28 | Valve rod anti-block safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204387424U true CN204387424U (en) | 2015-06-10 |
Family
ID=53360146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420728018.9U Expired - Fee Related CN204387424U (en) | 2014-11-28 | 2014-11-28 | Valve rod anti-block safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204387424U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113738925A (en) * | 2021-08-25 | 2021-12-03 | 浙江大学 | Valve rod clamping stagnation preventing assembly, valve rod clamping stagnation preventing valve structure and method |
-
2014
- 2014-11-28 CN CN201420728018.9U patent/CN204387424U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113738925A (en) * | 2021-08-25 | 2021-12-03 | 浙江大学 | Valve rod clamping stagnation preventing assembly, valve rod clamping stagnation preventing valve structure and method |
| CN113738925B (en) * | 2021-08-25 | 2022-05-13 | 浙江大学 | Valve rod clamping stagnation preventing assembly, valve rod clamping stagnation preventing valve structure and method |
| WO2023025163A1 (en) * | 2021-08-25 | 2023-03-02 | 浙江大学 | Assembly for preventing clamping stagnation of valve rod, and valve structure and method for preventing clamping stagnation of valve rod |
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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: 20150610 Termination date: 20151128 |