CN202209452U - Safety inverted valve - Google Patents
Safety inverted valve Download PDFInfo
- Publication number
- CN202209452U CN202209452U CN2011203017256U CN201120301725U CN202209452U CN 202209452 U CN202209452 U CN 202209452U CN 2011203017256 U CN2011203017256 U CN 2011203017256U CN 201120301725 U CN201120301725 U CN 201120301725U CN 202209452 U CN202209452 U CN 202209452U
- Authority
- CN
- China
- Prior art keywords
- pressure release
- valve
- release valve
- valve seat
- flap
- 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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- Safety Valves (AREA)
- Check Valves (AREA)
Abstract
The utility model relates to a safety inverted valve, which comprises an inverted valve. A screw-open structure is adopted for the inverted valve, which comprises a valve body, a valve seat and a valve clack. The valve body chamber is mainly provided with a decompression valve, which comprises a decompression valve seat, a decompression valve clack and a decompression valve stem, the back side of the decompression valve clack is connected with a spring mechanism, and the periphery of the lower spring seat of the spring mechanism is installed on the decompression valve seat by an open high position-limit mechanism. A brace rod is installed into the hole of the decompression valve, the brace rod has a mounting hole, and the lower end of the decompression valve stem through a fixed hole is fixed and connected on the brace rod by a fixed nut. The safety inverted valve achieves two functions to prevent backflow and overpressure of a pipeline medium, is advantaged by convenient installation, simple maintenance, low use and maintenance costs, high sealing reliability, etc. The safety inverted valve is suitable for a control valve of a pump outlet pipe.
Description
Technical field
The utility model relates to a kind of valve field, especially a kind of safe check valve.
Background technique
Under some special operating modes, should guarantee that rupture pressure container or pressure piping unconfined rising appears, in the pressure medium in pressurized container or the pressure piping; Require medium can not go out the phenomenon of adverse current simultaneously.Present employed method is that a safety check and a safety relief valve are installed on pressurized container or pressure piping simultaneously, prevents that adverse current and superpressure phenomenon from appearring in medium.As preventing medium counter flow at some delivery side of pump places, install a safety check, prevent the unusual superpressure of medium again, install a safety relief valve.Its major defect is the installation trouble, safeguards complicacy, use, maintenance cost height, and leakage point is many.
Summary of the invention
The purpose of the utility model is the shortcoming that exists to existing technology, and a kind of have check valve and safety valve double action are provided, easy for installation, safeguard simply, the operation and maintenance cost is low, sealing reliability is high safe check valve.
The utility model is realized through following scheme:
This safe check valve comprises a safety check, and this safety check adopts the rotary-open type structure, comprises valve body, valve seat, flap.Mainly be that the valve body lumen is provided with Decompression valves; This Decompression valves comprises pressure release valve seat, pressure release flap, pressure release valve rod; The pressure release valve seat is installed on the valve body by bolt seals, and the pressure release flap is movably arranged on the pressure release valve rod, and its lower end surface has the sealing surface that cooperatively interacts with the pressure release valve seat; The back side of pressure release flap connects spring mechanism; The lower spring cup center of this spring mechanism compresses with the pressure release flap back side and contacts, and is movably arranged on the pressure release valve rod, and the lower spring cup periphery is installed on the pressure release valve seat through opening high position-limit mechanism.Said open high position-limit mechanism by fixed cover, open high adjustment sleeve, open high stop collar and form; Fixed cover lower end screw thread is installed on the pressure release valve seat; Opening high stop collar upper end is connected with lower spring cup through coupling shaft; The lower end is movably arranged in the inner chamber of fixed cover, opens the interior accent of high adjustment sleeve through screw thread and fixed cover and is connected.Relief hole internal fixation at the pressure release valve seat is installed supporting rib, and this supporting rib center is shaped on fixed hole, and the lower end of pressure release valve rod is fixedly connected on the supporting rib by set screw nut after passing fixed hole.
The utility model beneficial effect compared with prior art is on the valve body lumen of safety check, Decompression valves to be set; Can prevent that pipeline medium from flowing backwards; May command pipeline medium superpressure again, have easy for installation, safeguard simple, low, the sealing reliability advantages of higher of operation and maintenance cost.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the structural representation of safety valve part among the utility model Fig. 1.
Embodiment
Like Fig. 1, safe check valve shown in Figure 2; Comprise a safety check, this safety check adopts the rotary-open type structure, comprises valve body 4, valve seat 5, flap 6; Flap 6 is fixedly mounted on an end of rocking bar 8 by locking nut 9, and the other end of rocking bar 8 is hinged on valve body 4 internal chamber walls by bearing pin 7.Valve body 4 lumens are provided with Decompression valves; This Decompression valves comprises pressure release valve seat 10, pressure release flap 15, pressure release valve rod 20, and pressure release valve seat 10 is installed on the valve body 4 by bolt 3 sealings, and pressure release flap 15 is movably arranged on the pressure release valve rod 20; Its lower plane has the sealing surface that cooperatively interacts with pressure release valve seat 10; The back side of pressure release flap 15 connects spring mechanism, and lower spring cup 16 centers of this spring mechanism compress with pressure release flap 15 back sides and contact, and are movably arranged on the pressure release valve rod 20; Lower spring cup 16 peripheries are installed on the pressure release valve seat 10 through opening high position-limit mechanism, open four of high position-limit mechanism employings and are evenly distributed on lower spring cup 16 peripheries.Said open high position-limit mechanism by fixed cover 11, open high adjustment sleeve 12, open high stop collar 13 and form; Fixed cover 11 lower end screw threads are installed on the pressure release valve seat 10; Opening high stop collar 13 upper ends is connected with lower spring cup 16 through coupling shaft 14; The lower end is movably arranged in the inner chamber of fixed cover 11; Open the interior accent of high adjustment sleeve 12 through screw thread and fixed cover 11 and be connected, its lower plane and the ultimate range of opening between the high stop collar 13 bottom convex shoulder upper table surfaces are the highest Lift of pressure release flap 15, open high adjustment sleeve 12 and are fixed on the fixed cover 11 by screw 1.Relief hole internal fixation at pressure release valve seat 10 is installed supporting rib 2, and these supporting rib 2 centers are shaped on fixed hole, and the lower end of pressure release valve rod 20 is fixedly connected on the supporting rib 2 by set screw nut 21 after passing fixed hole.The spring 19 of spring mechanism is installed between lower spring cup 16 and the upper spring seat 18 by adjusting nut 17, and adjusting nut 17 and pressure release valve rod 20 are connected by screw-thread fit, can regulate the Set pressure value through the position of adjustment adjusting nut 17 on pressure release valve rod 20.
Claims (1)
1. a safe check valve comprises a safety check, and this safety check adopts the rotary-open type structure; Comprise valve body (4), valve seat (5), flap (6); It is characterized in that valve body (4) lumen is provided with Decompression valves, said Decompression valves comprises pressure release valve seat (10), pressure release flap (15), pressure release valve rod (20), and pressure release valve seat (10) is installed on the valve body (4) by bolt (3) sealing; Pressure release flap (15) is movably arranged on the pressure release valve rod (20); Its lower plane has the sealing surface that cooperatively interacts with pressure release valve seat (10), and the back side of pressure release flap (15) connects spring mechanism, and the lower spring cup of this spring mechanism (16) center compresses with pressure release flap (15) back side and contacts; And be movably arranged on the pressure release valve rod (20); Lower spring cup (16) periphery is installed on the pressure release valve seat (10) through opening high position-limit mechanism, said open high position-limit mechanism by fixed cover (11), open high adjustment sleeve (12), open high stop collar (13) and form, fixed cover (11) lower end screw thread is installed on the pressure release valve seat (10); Opening high stop collar (13) upper end is connected with lower spring cup (16) through coupling shaft (14); The lower end is movably arranged in the inner chamber of fixed cover (11), opens the interior accent of high adjustment sleeve (12) through screw thread and fixed cover (11) and is connected, and at the relief hole internal fixation of pressure release valve seat (10) supporting rib (2) is installed; This supporting rib (2) center is shaped on fixed hole, and the lower end of pressure release valve rod (20) is fixedly connected on the supporting rib (2) by set screw nut (21) after passing fixed hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203017256U CN202209452U (en) | 2011-08-17 | 2011-08-17 | Safety inverted valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203017256U CN202209452U (en) | 2011-08-17 | 2011-08-17 | Safety inverted valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202209452U true CN202209452U (en) | 2012-05-02 |
Family
ID=45988999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203017256U Expired - Lifetime CN202209452U (en) | 2011-08-17 | 2011-08-17 | Safety inverted valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202209452U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103090065A (en) * | 2012-12-30 | 2013-05-08 | 张意 | Full-automatic double-side-opened pressure-maintaining unloading safety valve |
| CN103629397A (en) * | 2013-11-05 | 2014-03-12 | 马兆良 | Automatic pressure leakage block valve |
| CN104180029A (en) * | 2014-09-05 | 2014-12-03 | 上海冠龙阀门机械有限公司 | Screwing opening type check valve capable of balancing pressure automatically |
| CN106996469A (en) * | 2017-03-13 | 2017-08-01 | 广州旭特铝业科技有限公司 | Can manual pressure release type check valve |
| CN108458141A (en) * | 2018-04-17 | 2018-08-28 | 广州旭特铝业科技有限公司 | Manual pressure release type check-valves |
| CN109058532A (en) * | 2018-10-29 | 2018-12-21 | 镇江市鑫浩塑胶有限公司 | A kind of check-valves with safety valve |
-
2011
- 2011-08-17 CN CN2011203017256U patent/CN202209452U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103090065A (en) * | 2012-12-30 | 2013-05-08 | 张意 | Full-automatic double-side-opened pressure-maintaining unloading safety valve |
| CN103629397A (en) * | 2013-11-05 | 2014-03-12 | 马兆良 | Automatic pressure leakage block valve |
| CN104180029A (en) * | 2014-09-05 | 2014-12-03 | 上海冠龙阀门机械有限公司 | Screwing opening type check valve capable of balancing pressure automatically |
| CN106996469A (en) * | 2017-03-13 | 2017-08-01 | 广州旭特铝业科技有限公司 | Can manual pressure release type check valve |
| WO2018166041A1 (en) * | 2017-03-13 | 2018-09-20 | 广州旭特铝业科技有限公司 | Pressure relief type one-way valve device |
| CN106996469B (en) * | 2017-03-13 | 2020-03-27 | 广州旭特铝业科技有限公司 | Hand pressure relief type one-way valve |
| CN108458141A (en) * | 2018-04-17 | 2018-08-28 | 广州旭特铝业科技有限公司 | Manual pressure release type check-valves |
| CN108458141B (en) * | 2018-04-17 | 2023-11-14 | 广州旭特铝业科技有限公司 | Manual pressure release type check valve |
| CN109058532A (en) * | 2018-10-29 | 2018-12-21 | 镇江市鑫浩塑胶有限公司 | A kind of check-valves with safety valve |
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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 |
Granted publication date: 20120502 |
|
| CX01 | Expiry of patent term |