CN203146948U - Built-in type vacuum negative-pressure safety valve - Google Patents
Built-in type vacuum negative-pressure safety valve Download PDFInfo
- Publication number
- CN203146948U CN203146948U CN 201320163378 CN201320163378U CN203146948U CN 203146948 U CN203146948 U CN 203146948U CN 201320163378 CN201320163378 CN 201320163378 CN 201320163378 U CN201320163378 U CN 201320163378U CN 203146948 U CN203146948 U CN 203146948U
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- valve
- rod
- valve body
- seat
- flap
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Abstract
The utility model relates to a built-in type negative-pressure safety valve. The built-in type negative-pressure safety valve comprises a valve body, a valve seat, a valve flap, a valve rod and a setting spring. Mainly, the valve body is embedded into a pressure vessel, a through hole is formed in the side wall of the valve body, the valve seat is fixedly installed on the valve body arranged outside the pressure vessel, the valve flap is installed in an inner cavity of the valve body, the valve rod is installed in the center of the valve seat, the valve rod and the valve seat are axially and fixedly connected and are movably connected in the radial direction, and a locking mechanism is arranged at the upper end of the valve rod. The valve flap is connected with the valve rod in a sealing matched mode trough a guide hole, the setting spring is installed between a step arranged on the back of the valve flap and a spring seat, the spring seat is movably installed on the valve rod through an adjusting sleeve, the adjusting sleeve is connected with the valve rod in a threaded matched mode, and an anti-rotating device is arranged between the adjusting sleeve and the valve body. The built-in type negative-pressure safety valve has the advantages of being small in installation space, beneficial to adjustment of the set-pressure and the like. In addition, the built-in type negative-pressure safety valve is suitable for a protective device of a negative-pressure container.
Description
Technical field
The utility model belongs to valve field, particularly about a kind of negative pressure of vacuum safety valve.The utility model is applicable to the protective gear of negative-pressure container.
Background technique
The negative pressure of vacuum safety valve generally is made up of valve body, valve seat, flap, valve rod, spring, the bolt of adjusting, safety cover; spring is installed in the valve cover cavity; the bolt of adjusting is installed on the valve gap; valve body is installed in the pressurized container outer wall; its inlet passage is communicated with the pressurized container inner chamber; adjust spring force by the adjusting bolt of adjusting, set the Set pressure of safety valve.Its major defect is when adjusting the Set pressure value, need pull down safety cover, and Set pressure is regulated trouble; Valve body is installed in the pressurized container outer wall, and installing space is big.
Summary of the invention
The purpose of this utility model is the shortcoming that exists at prior art, and the built-in type negative pressure of vacuum that a kind of Set pressure is easy to adjust, installing space is little safety valve is provided.
The technical solution of the utility model comprises valve body, valve seat, flap, valve rod, setting spring; Mainly be that valve body is inlaid in pressurized container inside, be shaped on through hole at body wall; Valve seat is fixedly installed on the valve body of pressurized container outside, and flap is installed in body cavity; Valve rod is installed in the valve seat center, and axial restraint is connected, radially flexibly connects between valve rod and the valve seat, and the valve rod upper end is provided with locking mechanism; Flap is connected by pilot hole and valve rod motive sealing, between the step at the flap back side and spring seat, setting spring is installed, spring seat is movably arranged on the valve rod by adjustment sleeve, and adjustment sleeve and threaded stem are connected, and is provided with anti-rotation device between adjustment sleeve and valve body.
In above technological scheme, anti-rotation device is made up of the guiding groove on anti-rotation screw rod and the valve body, and an end of anti-rotation screw rod is fixedlyed connected with adjustment sleeve, and the other end and guiding groove activity are connected.
In above technological scheme, valve rod is installed on the valve seat by guide rod, fixedlys connected with valve seat in described guide rod top, and bottom periphery and flap motive sealing are connected, and valve rod is installed in the mounting hole of guide rod by positioning device.
In above technological scheme, be positioned on the valve rod of guide rod mounting hole and be shaped on large diameter cylinder, this large diameter cylinder cooperates with the motive sealing of guide rod mounting hole, positioning device is made up of the last convex shoulder of large diameter cylinder, following convex shoulder and upper bearing (metal), lower bearing and locking ring, upper bearing (metal) is installed between the last convex shoulder of the interior step of guide rod mounting hole and large diameter cylinder, lower bearing is compressed between the following convex shoulder and locking ring upper-end surface that is installed in large diameter cylinder by locking ring, and locking ring is fixedly mounted in the guide rod mounting hole by screw thread.
The utility model has the advantages that valve body is inlaid in pressurized container inside, installing space is little, Set pressure is easy to adjust.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Built-in type negative pressure of vacuum safety valve as shown in Figure 1 comprises valve body 1, valve seat 2, flap 3, valve rod 5, setting spring 6; Valve body 1 is inlaid in pressurized container inside, is shaped on through hole at valve body 1 sidewall, and valve body 1 cavity is communicated with the pressurized container inner chamber, and valve body 1 is installed in the pressurized container by flange 9 fixing seals; Valve seat 2 is fixedly installed on the valve body 1 of pressurized container outside, and being interfixed by screw thread between the two is tightly connected, and flap 3 is installed in valve body 1 inner chamber; Valve rod 5 is installed in valve seat 2 centers, axial restraint is connected, radially flexibly connects between valve rod 5 and the valve seat 2, makes valve rod 5 relative to valve seat 2 axial restraints, radially can rotate, and valve rod 5 upper ends are provided with locking mechanism 4, locking valve rod 5 prevents that it from rotating relative to valve seat 2 after setting Set pressure; Flap 3 is connected by pilot hole and valve rod 5 motive sealings, setting spring 6 is installed between the step at flap 3 back sides and spring seat 11, spring seat 11 is movably arranged on the valve rod 5 by adjustment sleeve 7, adjustment sleeve 7 is connected with valve rod 5 screw-thread fit, between adjustment sleeve 7 and valve body 1, be provided with anti-rotation device, prevent that adjustment sleeve 7 from following valve rod 5 rotation.
Anti-rotation device is made up of the guiding groove on anti-rotation screw rod 8 and the valve body 1, and an end of anti-rotation screw rod 8 is fixedlyed connected with adjustment sleeve 7, and the other end and guiding groove activity are connected.
Valve rod 5 is installed on the valve seat 2 by guide rod 10, fixedly connected with valve seat 2 in described guide rod 10 tops, bottom periphery and flap 3 motive sealings are connected, make flap 3 relatively guide rod 10 move up and down, valve rod 5 is installed in the mounting hole of guide rod 10 by positioning device, valve rod 5 axial restraint in the mounting hole of guide rod 10 is installed, radially can be rotated.
Be positioned on the valve rod 5 of guide rod 10 mounting holes and be shaped on large diameter cylinder, described large diameter cylinder refers at valve rod 5 one section cylindrical body that diameter is bigger than other positions is arranged, this large diameter cylinder cooperates with guide rod 10 mounting hole motive sealings, positioning device is by the last convex shoulder of large diameter cylinder, following convex shoulder and upper bearing (metal), lower bearing and locking ring 12 are formed, upper bearing (metal) is installed between the last convex shoulder of the interior step of guide rod 10 mounting holes and large diameter cylinder, lower bearing is compressed between the following convex shoulder and locking ring 12 upper-end surfaces that is installed in large diameter cylinder by locking ring 12, locking ring 12 is fixedly mounted in guide rod 10 mounting holes by screw thread, realize valve rod 5 axial restraint installation in guide rod 10 mounting holes, radially rotation flexibly.
Polygon structure or the flat type structure that is easy to connect rotatable handle made in valve rod 5 upper end portions, and locking mechanism 4 adopts locking nut to be threaded with valve rod 5, and valve rod 5 is locked on the guide rod 10.
Claims (4)
1. a built-in type negative pressure of vacuum safety valve comprises valve body (1), valve seat (2), flap (3), valve rod (5), setting spring (6); It is characterized in that valve body (1) is inlaid in pressurized container inside, be shaped on through hole at valve body (1) sidewall; Valve seat (2) is fixedly installed on the valve body (1) of pressurized container outside, and flap (3) is installed in valve body (1) inner chamber; Valve rod (5) is installed in valve seat (2) center, and axial restraint is connected, radially flexibly connects between valve rod (5) and the valve seat (2), and valve rod (5) upper end is provided with locking mechanism (4); Flap (3) is connected by pilot hole and valve rod (5) motive sealing, between the step at flap (3) back side and spring seat (11), setting spring (6) is installed, spring seat (11) is movably arranged on the valve rod (5) by adjustment sleeve (7), adjustment sleeve (7) is connected with valve rod (5) screw-thread fit, is provided with anti-rotation device between adjustment sleeve (7) and valve body (1).
2. built-in type negative pressure of vacuum safety valve according to claim 1, it is characterized in that anti-rotation device is made up of the guiding groove on anti-rotation screw rod (8) and the valve body (1), one end of anti-rotation screw rod (8) is fixedlyed connected with adjustment sleeve (7), and the other end and guiding groove activity are connected.
3. built-in type negative pressure of vacuum safety valve according to claim 1 and 2, it is characterized in that valve rod (5) is installed on the valve seat (2) by guide rod (10), fixedly connected with valve seat (2) in described guide rod (10) top, bottom periphery and flap (3) motive sealing is connected, and valve rod (5) is installed in the mounting hole of guide rod (10) by positioning device.
4. built-in type negative pressure of vacuum safety valve according to claim 3, it is characterized in that being positioned on the valve rod (5) of guide rod (10) mounting hole and be shaped on large diameter cylinder, this large diameter cylinder cooperates with guide rod (10) mounting hole motive sealing, positioning device is by the last convex shoulder of large diameter cylinder, following convex shoulder and upper bearing (metal), lower bearing and locking ring (12) are formed, upper bearing (metal) is installed between the last convex shoulder of the interior step of guide rod (10) mounting hole and large diameter cylinder, lower bearing is compressed between the following convex shoulder and locking ring (12) upper-end surface that is installed in large diameter cylinder by locking ring (12), and locking ring (12) is fixedly mounted in guide rod (10) mounting hole by screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320163378 CN203146948U (en) | 2013-03-19 | 2013-03-19 | Built-in type vacuum negative-pressure safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320163378 CN203146948U (en) | 2013-03-19 | 2013-03-19 | Built-in type vacuum negative-pressure safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203146948U true CN203146948U (en) | 2013-08-21 |
Family
ID=48974472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320163378 Expired - Fee Related CN203146948U (en) | 2013-03-19 | 2013-03-19 | Built-in type vacuum negative-pressure safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203146948U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107756868A (en) * | 2017-11-18 | 2018-03-06 | 浙江灿根智能科技有限公司 | Punch press combined type pump valve Overloading protection apparatus |
| CN108895183A (en) * | 2018-09-26 | 2018-11-27 | 雷舸流体科技（上海）有限公司 | Safety valve for transportable pressure vessel |
-
2013
- 2013-03-19 CN CN 201320163378 patent/CN203146948U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107756868A (en) * | 2017-11-18 | 2018-03-06 | 浙江灿根智能科技有限公司 | Punch press combined type pump valve Overloading protection apparatus |
| CN107756868B (en) * | 2017-11-18 | 2024-01-12 | 浙江灿根智能科技股份有限公司 | Overload protection device for combined pump valve for punch press |
| CN108895183A (en) * | 2018-09-26 | 2018-11-27 | 雷舸流体科技（上海）有限公司 | Safety valve for transportable pressure vessel |
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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: 20130821 Termination date: 20190319 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |