CN104976390A - Novel lift check valve - Google Patents
Novel lift check valve Download PDFInfo
- Publication number
- CN104976390A CN104976390A CN201410141441.3A CN201410141441A CN104976390A CN 104976390 A CN104976390 A CN 104976390A CN 201410141441 A CN201410141441 A CN 201410141441A CN 104976390 A CN104976390 A CN 104976390A
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- CN
- China
- Prior art keywords
- valve
- lifting
- safety check
- flap
- valve rod
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- 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.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
Abstract
Disclosed is a novel lift check valve. The novel lift check valve comprises a valve body, a valve seat, a valve clack and a valve rod. The valve seat, the valve clack and the valve rod are arranged inside the valve body. One end of the valve clack is connected with the valve rod, and the other end of the valve clack is connected with the valve seat. The novel lift check valve further comprises a self-sealing device. The self-sealing device comprises a spring, a lantern ring and a guide shaft, wherein the spring, the lantern ring and the guide shaft are arranged on the valve rod in sequence from the position of connection between the valve clack and the valve rod to the top in a sleeving mode. A cavity is arranged inside the guide shaft so that the valve rod can move back and forth in the cavity. By the adoption of the novel lift check valve, due to the fact that the self-sealing device is arranged, the valve clack and the valve seat can be rapidly opened and closed through the pressure difference of fluid, the sealing performance is good in the closing process, and backflow of the fluid is prevented in time. Meanwhile, the pressure of a water hammer can be reduced, and the service life of the novel lift check valve is prolonged.
Description
Technical field
The present invention relates to a kind of safety check, specifically, relate to a kind of lifting/lowering type safety check.
Background technique
Safety check refers to the valve that automatically can stop reverse flow of fluids.Its open-shut device opens under fluid pressure action, and fluid flows to outlet side from suction side.When suction side pressure is lower than outlet side, flap is automatically closed in case fluid flows backwards under the effect of the factor such as fluid pressure difference, gravity own.Therefore, safety check is also called " one-way valve ", " reflux valve " etc.Because safety check result is simple, cost is low, therefore, safety check is widely used in the industries such as power plant, chemical industry, food, pharmacy.But traditional safety check, due to the defect of its structure, valve opening and closing speed is slow, and make water hammer pressure large, the poor sealing performance of valve body and flap, has had a strong impact on effect of whole valve, reduced working life simultaneously.
Summary of the invention
For solving the problems of the technologies described above, the object of the present invention is to provide and a kind ofly open and close that speed is fast, the lifting/lowering type safety check of good seal performance, reduction water hammer pressure and long service life.
For achieving the above object, technological scheme of the present invention is as follows: a kind of lifting/lowering type safety check, comprises valve body, valve seat, flap and valve rod, and described valve seat, flap and valve rod are all arranged at described valve inner; One end of described flap connects described valve rod, its the other end connects described valve seat, described lifting/lowering type safety check also comprises self-seal device, described self-seal device comprises spring, the collar and the axis of guide, and described spring, the collar and the axis of guide are upwards sheathed on successively on described valve rod from the joint of described flap and valve rod; Described axis of guide inside is provided with cavity, and valve rod is moved around in described cavity.
Further, its circumference of the lower end edge of the described axis of guide and be inwardly provided with step surface, one end of described spring to be sheathed on described step surface and to clamp.
Further, described lifting/lowering type safety check also comprises the valve gap be connected with described valve body screw thread, and the external connections of described valve gap and described valve body is welded as a whole.
Further, described flap and valve rod are integral type structure.
Further, one end of the described axis of guide connects described valve gap, and the described axis of guide and valve gap are integral type structure.
Further, described valve seat is provided with circular arc concave surface along its circumference, and described flap is provided with protruding circular arc spherical surface; When described valve seat and valve flap contacts and when compressing, described circular arc concave surface and circular arc spherical surface fit tightly, and both are finally in micro-lip type structure.
Further, described valve body comprises inlet channel and outlet flow, described inlet channel and outlet flow conllinear.
Further, along the axis of the described axis of guide, the length of described cavity is not more than the length of described valve rod.
Adopt technique scheme, the beneficial effect of technical solution of the present invention is: during work, medium flows into from inlet channel, and when inlet channel pressure is greater than outlet flow, flap under the effect of the pressure, overcome the reaction force of spring, move upward together, flap is separated with valve seat, valve open, now medium circulation, flows into outlet flow; When the pressure of outlet flow is greater than the pressure of inlet channel, because the pressure of inlet channel cannot promote flap, now flap is together with valve rod, its pressure difference in conjunction with inlet channel and outlet flow of conducting oneself with dignity, flap and valve seat are closed rapidly, stops the medium back flow of outlet flow.The use of axis of guide cooperation spring, makes whole valve opening and closing rapidly and flexibly, good airproof performance, stops the backflow of medium in time; The collar is arranged at the joint of flap and valve rod, and whole sealability is improved further; When valve is closed rapidly, the hydraulic pressure of water hammer can be alleviated, extend the working life of whole valve.
Accompanying drawing explanation
In order to be illustrated more clearly in the technological scheme in embodiment of the present invention technology, be briefly described to the accompanying drawing used required in the description of embodiment's technology below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of lifting/lowering type safety check of the present invention;
Fig. 2 is the enlarged diagram of valve seat and flap in a kind of lifting/lowering type safety check of the present invention.
Wherein, 1, valve body, 2, valve seat, 21, circular arc concave surface, 3, flap, 31, circular arc spherical surface, 4, valve rod, 5, spring, 6, the collar 7, the axis of guide, 71, step surface, 8, cavity, 9, valve gap, 10, inlet channel, 11, outlet flow.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technological scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1
As shown in Figure 1 and Figure 2, a kind of lifting/lowering type safety check, comprises valve body 1, valve seat 2, flap 3 and valve rod 4, and it is inner that valve seat 2, flap 3 and valve rod 4 are all arranged at valve body 1; One end of flap 3 connects valve rod 4, its the other end connecting valve seat 2, lifting/lowering type safety check also comprises self-seal device, self-seal device comprises spring 5, the collar 6 and the axis of guide 7, and spring 5, the collar 6 and the axis of guide 7 are upwards sheathed on successively on valve rod 4 from the joint of flap 3 and valve rod 4; The axis of guide 7 inside is provided with cavity 8, and valve rod 4 is moved back and forth in cavity 8.Along the axis of the axis of guide 7, the length of cavity 8 is not more than the length of valve rod 4.
Its circumference of the lower end edge of the axis of guide 7 and be inwardly provided with step surface 71, one end of spring 5 to be sheathed on step surface 71 and to clamp.
Valve seat 2 is provided with circular arc concave surface 21 along its circumference, and flap 3 is provided with protruding circular arc spherical surface 31; When valve seat 2 contacts with flap 3 and compresses, circular arc concave surface 21 and circular arc spherical surface 31 fit tightly, and both are finally in micro-lip type structure.
Embodiment 2
All the other are same as the previously described embodiments, and difference is, as shown in Figure 1, lifting/lowering type safety check also comprises the valve gap 9 be threaded with valve body 1, and valve gap 9 is welded as a whole with the external connections of valve body 1, makes valve whole in sealing state, thoroughly completely cut off with the external world.One end of the axis of guide 7 connects valve gap 9, and the axis of guide 7 and valve gap 9 are integral type structure.
Embodiment 3
All the other are same as the previously described embodiments, and difference is, as shown in Figure 1, flap 3 and valve rod 4 are integral type structure.
Embodiment 4
All the other are same as the previously described embodiments, and difference is, as shown in Figure 1, valve body comprises inlet channel 10 and outlet flow 11, inlet channel 10 and outlet flow 11 conllinear, such setting, make directly circulation more smooth and easy.
Embodiment 5
All the other are same as the previously described embodiments, and difference is, valve flowing channel and chamber, valve rod place form y-type structure jointly.
Pass through technique scheme, the beneficial effect of technical solution of the present invention is: during work, medium flows into from inlet channel, and when inlet channel pressure is greater than outlet flow, flap under the effect of the pressure, overcome the reaction force of spring, move upward together, flap is separated with valve seat, valve open, now medium circulation, flows into outlet flow; When the pressure of outlet flow is greater than the pressure of inlet channel, because the pressure of inlet channel cannot promote flap, now flap is together with valve rod, its pressure difference in conjunction with inlet channel and outlet flow of conducting oneself with dignity, flap and valve seat are closed rapidly, stops the medium back flow of outlet flow.The use of axis of guide cooperation spring, makes whole valve opening and closing rapidly and flexibly, good airproof performance, stops the backflow of medium in time; The collar is arranged at the joint of flap and valve rod, and whole sealability is improved further; When valve is closed rapidly, the hydraulic pressure of water hammer can be alleviated, extend the working life of whole valve.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. a lifting/lowering type safety check, comprises valve body, valve seat, flap and valve rod, and described valve seat, flap and valve rod are all arranged at described valve inner; One end of described flap connects described valve rod, its the other end connects described valve seat, it is characterized in that, described lifting/lowering type safety check also comprises self-seal device, described self-seal device comprises spring, the collar and the axis of guide, and described spring, the collar and the axis of guide are upwards sheathed on successively on described valve rod from the joint of described flap and valve rod; Described axis of guide inside is provided with cavity, and valve rod is moved around in described cavity.
2. lifting/lowering type safety check according to claim 1, is characterized in that, its circumference of the lower end edge of the described axis of guide and be inwardly provided with step surface, and one end of described spring to be sheathed on described step surface and to clamp.
3. lifting/lowering type safety check according to claim 1 and 2, is characterized in that, described lifting/lowering type safety check also comprises the valve gap be connected with described valve body screw thread, and the external connections of described valve gap and described valve body is welded as a whole.
4. lifting/lowering type safety check according to claim 1, is characterized in that, described flap and valve rod are integral type structure.
5. lifting/lowering type safety check according to claim 3, is characterized in that, one end of the described axis of guide connects described valve gap, and the described axis of guide and valve gap are integral type structure.
6. the lifting/lowering type safety check according to claim 4 or 5, is characterized in that, described valve seat is provided with circular arc concave surface along its circumference, and described flap is provided with protruding circular arc spherical surface; When described valve seat and valve flap contacts and when compressing, described circular arc concave surface and circular arc spherical surface fit tightly, and both are finally in micro-lip type structure.
7. lifting/lowering type safety check according to claim 5, is characterized in that, described valve body comprises inlet channel and outlet flow, described inlet channel and outlet flow conllinear.
8. lifting/lowering type safety check according to claim 1, is characterized in that, along the axis of the described axis of guide, the length of described cavity is not more than the length of described valve rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410141441.3A CN104976390A (en) | 2014-04-10 | 2014-04-10 | Novel lift check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410141441.3A CN104976390A (en) | 2014-04-10 | 2014-04-10 | Novel lift check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104976390A true CN104976390A (en) | 2015-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410141441.3A Pending CN104976390A (en) | 2014-04-10 | 2014-04-10 | Novel lift check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104976390A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775423A (en) * | 2018-06-01 | 2018-11-09 | 杨玲玲 | A kind of mixed flow liquid separatnig valve to go with each other all the time |
| WO2021152842A1 (en) * | 2020-01-31 | 2021-08-05 | 株式会社イシザキ | Check valve |
| CN114008362A (en) * | 2019-06-28 | 2022-02-01 | 多可姆有限公司 | Assembled check valve |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2584981Y (en) * | 2002-11-22 | 2003-11-05 | 宁波法兰特阀门有限公司 | Lifting slowly closed check valve |
| EP1431636A1 (en) * | 2002-12-20 | 2004-06-23 | Joma-Polytec Kunststofftechnik GmbH | Valve |
| KR20090010273A (en) * | 2007-07-23 | 2009-01-30 | 손형모 | Check valve with one body type supporting unit |
| CN201531657U (en) * | 2009-10-29 | 2010-07-21 | 广东诺科冷暖设备有限公司 | Water flow check valve |
| CN202972044U (en) * | 2013-01-05 | 2013-06-05 | 大庆格亿钻采设备制造有限公司 | Bevel-angle one-way valve |
| CN203335949U (en) * | 2013-07-02 | 2013-12-11 | 温州蓝天管件阀门有限公司 | Lifting type check valve |
| CN203395300U (en) * | 2013-06-27 | 2014-01-15 | 浙江工贸职业技术学院 | Check valve with double seals |
| CN203784384U (en) * | 2014-04-10 | 2014-08-20 | 苏州科迪流体控制设备有限公司 | Novel lift check valve |
-
2014
- 2014-04-10 CN CN201410141441.3A patent/CN104976390A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2584981Y (en) * | 2002-11-22 | 2003-11-05 | 宁波法兰特阀门有限公司 | Lifting slowly closed check valve |
| EP1431636A1 (en) * | 2002-12-20 | 2004-06-23 | Joma-Polytec Kunststofftechnik GmbH | Valve |
| KR20090010273A (en) * | 2007-07-23 | 2009-01-30 | 손형모 | Check valve with one body type supporting unit |
| CN201531657U (en) * | 2009-10-29 | 2010-07-21 | 广东诺科冷暖设备有限公司 | Water flow check valve |
| CN202972044U (en) * | 2013-01-05 | 2013-06-05 | 大庆格亿钻采设备制造有限公司 | Bevel-angle one-way valve |
| CN203395300U (en) * | 2013-06-27 | 2014-01-15 | 浙江工贸职业技术学院 | Check valve with double seals |
| CN203335949U (en) * | 2013-07-02 | 2013-12-11 | 温州蓝天管件阀门有限公司 | Lifting type check valve |
| CN203784384U (en) * | 2014-04-10 | 2014-08-20 | 苏州科迪流体控制设备有限公司 | Novel lift check valve |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775423A (en) * | 2018-06-01 | 2018-11-09 | 杨玲玲 | A kind of mixed flow liquid separatnig valve to go with each other all the time |
| CN114008362A (en) * | 2019-06-28 | 2022-02-01 | 多可姆有限公司 | Assembled check valve |
| US12060949B2 (en) | 2019-06-28 | 2024-08-13 | Do Qoom, Corp, Ltd | Assemblable check valve |
| WO2021152842A1 (en) * | 2020-01-31 | 2021-08-05 | 株式会社イシザキ | Check valve |
| JPWO2021152842A1 (en) * | 2020-01-31 | 2021-08-05 | ||
| JP7068500B2 (en) | 2020-01-31 | 2022-05-16 | 株式会社イシザキ | Check valve |
| US11828373B2 (en) | 2020-01-31 | 2023-11-28 | Ishizaki Co., Ltd. | Check valve |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151014 |