CN102563135A - Low flow resistance check valve with high sealing force - Google Patents
Low flow resistance check valve with high sealing force Download PDFInfo
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- CN102563135A CN102563135A CN201110422245XA CN201110422245A CN102563135A CN 102563135 A CN102563135 A CN 102563135A CN 201110422245X A CN201110422245X A CN 201110422245XA CN 201110422245 A CN201110422245 A CN 201110422245A CN 102563135 A CN102563135 A CN 102563135A
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- valve
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- rod
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Abstract
The invention relates to a low flow resistance check valve with high sealing force. The low flow resistance check valve is characterized in that the low flow resistance check valve is provided with a valve body, a valve cap and a valve rod, wherein an inlet and an outlet are formed in the valve body; a central line of the inlet and a central line of the outlet of the valve body are arranged by 90 degrees; the valve cap is mounted on an outer plane of the valve body, which is opposite to the inlet; a permanent magnet is mounted in an inner hole of the valve cap; central lines of the valve cap, the valve rod and the inlet are consistent; the valve rod comprises rod parts arranged at two ends of the valve rod and disks positioned on the intermediate sections of the rod parts; the rod parts are respectively matched in holes of the valve cap and a guide plate of the inlet in a sliding way; the disks and corresponding annular blade edges of the valve body form a valve; and a spring is mounted on the valve rod between the disk and the valve cap. Due to the adoption of common action of a strong magnetic force and a spring force, the low flow resistance check valve has the characteristics of high sealing force and low flow resistance.
Description
Technical field
The present invention relates to a kind of valve, relate in particular to a kind of low flow resistance safety check with high sealing power.
Background technique
In the pipe-line system of carrying liquid medium, for various reasons, in order to prevent the refluence of medium; Generally use safety check; But hope that nearly all safety check has following characteristics: 1. high sealing power, for example strictness prevents that medium from flowing backwards behind closure of check ring, or prevents to cause the flutter of spool to cause noise or damage because inlet and outlet pressure is in a tumult; Because when spool is closed, spring pressure is minimum; When 2. medium circulates is energy efficient, hopes to have lower flow resistance.Clearly,, can not guarantee high sealing force, low flow resistance in the time of can not guaranteeing to circulate if adopt general check valve.
Summary of the invention
Main purpose of the present invention is: overcome the deficiency of existing technology, thereby develop a kind of safety check that not only has high sealing power but also have low flow resistance.
Above-mentioned technical problem of the present invention mainly is able to solve through following technical proposals: a kind of low flow resistance safety check with high sealing power; It is characterized in that: have valve body, valve gap, valve rod; Said valve body is provided with inlet/outlet; The inlet/outlet center line of said valve body is 90 ° of layouts, and said valve gap is installed on the outerplanar of the valve body relative with import, in the endoporus of valve gap permanent magnet is installed; The center line of valve gap is consistent with the import center line, and the center line of said valve rod is consistent with the center line of valve gap; Bar portion that said valve rod comprises two ends and the disk that is positioned at bar portion stage casing, the bar portion at said two ends, an end is joined with the hole cunning in the middle of the valve gap, and the other end and the corresponding hole of the guide plate cunning that is arranged on import are joined, and the motion of valve rod is play the guiding role; Valve is formed on the respective annular sword limit of said disk and valve body; On the valve rod between said disk and the valve gap, spring is installed.
Technological scheme of the present invention can also be further perfect:
As preferably, lean on annular sword limit one side at the disk of valve rod, be fixed with sealing gasket.
As preferably, protective housing is arranged outside the said valve gap.
As preferably, be fixed with armature on the valve rod, said armature is positioned at the outside of valve gap.
The invention has the beneficial effects as follows:
Therefore the present invention had both had high sealing power owing to adopt the acting in conjunction of strong magnetic force and spring force, had the characteristic of low flow resistance again.
Its working principle is (referring to Fig. 2):
Under the situation of not water flowing; Sealing gasket is under the acting in conjunction of magnetic force and spring force; Be close on the respective annular sword limit of valve body, therefore have very high sealing force, F1=F3+F4＞＞F6; Can prevent the refluence of medium reliably, can prevent effectively that also the disturbance of inlet/outlet pressure from causing that spool is the flutter of sealing gasket.F3＞F4 among the sealing force F1, the size of magnetic force F3 depends on distance and material of the two and the size between permanent magnet and the armature, the magnetic force property curve as Fig. 2 dotted line 3. shown in.
After the water flowing, when the difference of import hydraulic pressure and outlet hydraulic pressure surpassed sealing force F1, valve open supplied water downstream.Behind the valve open, along with the variation of flow, the power of closing that valve rod is suffered, the i.e. resistance of media flow; As Fig. 2 dot and dash line 4. shown in because 3. the magnetic force property curve be index variation, therefore along with the increase of valve opening, flow resistance reduces rapidly; When reaching the 60-80% of rated flow, magnetic force is very little, when reaching rated flow; Distance between permanent magnet and the armature is maximum, and magnetic force is almost nil, and this moment, valve rod only received the effect of spring; Because the power of closing of spring is less, therefore F2 has reduced the flow resistance of medium effectively much smaller than F5.
After medium stopped to flow, valve rod drove sealing gasket and resets closure of check ring rapidly under the promotion of spring.
As long as suitable selection magnetic force and spring force, the present invention also can become energy-saving safety check.This moment F3+F4=F6, promptly sealing force equates with general check valve, owing to the existence of magnetic force F3, spring force F4, promptly the rigidity of respective springs can obtain less.But behind valve open, magnetic force descends fast, and when sealing gasket was all opened, magnetic force was almost nil, and this moment, the valve rod suffered power of closing only received the active force of spring, because F2 is much smaller than F5, so circulating resistance is little, has reached purpose of energy saving.
Principle of the present invention also is applicable to the safety check of other various types.
Description of drawings
Accompanying drawing 1 is a kind of structural section figure of the present invention;
Accompanying drawing 2 is the present invention and general check valve characteristic curve comparison diagram.
Accompanying drawing 1 description of symbols: 1, protective housing, 2, armature, 3, permanent magnet, 4, O-ring seals one, 5, valve gap; 6, spring, 7, O-ring seals two, 8, valve rod, 9, valve body, 10, sealing gasket; 11, guide plate, 12, jump ring, P1, inlet pressure, P2, outlet pressure.
Accompanying drawing 2 description of symbols:
1.-the general check valve spring characteristic curve;
2.-spring characteristic curve of the present invention;
3.-permanent magnet and armature between the nonlinear characteristics curve of attraction force (magnetic force);
4.-nonlinear characteristics curve after magnetic force and spring force are synthetic;
The S-amount of spring compression;
S1-spring pre compressed magnitude;
The decrement of spring when the S2-sealing gasket is all opened;
F-acts on the power of closing on the valve rod;
Act on the power of closing on the valve rod during not water flowing of F1-, promptly sealing force F1=F3+F4＞＞F6;
The F2-sealing gasket acts on the power of closing on the valve rod when all opening, i.e. the flow resistance of fluid, and F2 is much smaller than F5;
The suffered magnetic force of sealing gasket during not water flowing of F3-;
The suffered spring force of sealing gasket during not water flowing of F4-;
When the F5-sealing gasket is all opened, the close power of general check valve spring action on valve rod;
The suffered spring force sealing force of general check valve sealing gasket during not water flowing of F6-.
Embodiment
Through embodiment and combine accompanying drawing, technological scheme of the present invention is further specified below.
Embodiment:
Low flow resistance safety check with high sealing power as shown in Figure 1 is made up of protective housing 1, armature 2, permanent magnet 3, O-ring seals 1, valve gap 5, spring 6, O-ring seals 27, valve rod 8, valve body 9, sealing gasket 10, guide plate 11, jump ring 12.The import and export center line of valve body 9 is 90 °, and respective flange is connected with bolt with inlet pipeline, outlet conduit respectively; Valve gap 5 is installed on the outerplanar of the valve body 9 relative with suction flange, and is screwed.After the installation, the center line of valve gap 5 is consistent with the import center line; Permanent magnet 3 is installed in the endoporus of valve gap 5 left ends, and with the jump ring location, for obtaining strong magnetic force, material adopts neodymium iron boron; Guide plate 11 is installed in the hole of water intake, and the center line of its inside and outside circle is consistent, and locatees with jump ring; Two end bar portions of valve rod 8 are sliding respectively to be fitted in valve gap 5 and the guide plate 11 corresponding holes, and the motion of valve rod 8 is play the guiding role; Armature 2 is installed in the left end of valve rod 8, and fixes with nut, and armature 2 can adopt ferromagnetic substance, also can adopt permanent magnet; Sealing gasket 10 is installed in the right side of valve rod 8 middle part disks, and with the nut location, sealing gasket 10 is formed valve with the respective annular sword limit of valve body 9, realizes the switching of safety check; Be provided with spring 6 at the bottom of valve gap 5 right ports and on the valve rod between the disk of valve rod 8, rear spring 6 is installed has certain pretightening force, and therefore the situation lower seal pad 10 in not water flowing is pressed on the respective annular sword limit of valve body 9 all the time.Resistance when reducing media flow, the rigidity of spring 6 is less, as long as guarantee that in the medium back that stops to circulate sealing gasket 10 has resetted reliably, its characteristic as the thin oblique line among Fig. 2 2. shown in, the spring rate in its ratio of rigidity general check valve is much little; The maximum opening of sealing gasket 10 is placed restrictions on by the right side of valve gap 5, and this moment, its left side with valve rod 8 middle part disks contacted; Protective housing 1 mainly is in order to prevent that ferromagnetic particle is inhaled between permanent magnet 3 and the armature 2 and influences the function of safety check; O-ring seals 1 and O-ring seals 27 are in order to prevent leaking of medium.
Claims (4)
1. low flow resistance safety check with high sealing power; It is characterized in that: have valve body (9), valve gap (5), valve rod (8), said valve body (9) is provided with inlet/outlet, and the inlet/outlet center line of said valve body (9) is 90 ° of layouts; Said valve gap (5) is installed on the outerplanar of the valve body relative with import (9); Permanent magnet (3) is installed in the endoporus of valve gap (5), and the center line of valve gap (5) is consistent with the import center line, and the center line of said valve rod (8) is consistent with the center line of valve gap (5); Said valve rod (8) comprises bar portion and is positioned at the disk in stage casing, and said bar portion is sliding respectively to fit in the corresponding hole of guide plate (11) of valve gap (5) and import the respective annular sword limit composition valve of said disk and valve body (9); On the valve rod (8) between said disk and the valve gap (5), spring (6) is installed.
2. the low flow resistance safety check with high sealing power according to claim 1 is characterized in that: the disk at valve rod (8) leans on annular sword limit one side, is fixed with sealing gasket (10).
3. the low flow resistance safety check with high sealing power according to claim 1 and 2 is characterized in that: there is protective housing (1) said valve gap (5) outside.
4. the low flow resistance safety check with high sealing power according to claim 1 and 2, it is characterized in that: be fixed with armature (2) on the valve rod (8), said armature is positioned at the outside of valve gap (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110422245XA CN102563135A (en) | 2011-12-16 | 2011-12-16 | Low flow resistance check valve with high sealing force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110422245XA CN102563135A (en) | 2011-12-16 | 2011-12-16 | Low flow resistance check valve with high sealing force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102563135A true CN102563135A (en) | 2012-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110422245XA Pending CN102563135A (en) | 2011-12-16 | 2011-12-16 | Low flow resistance check valve with high sealing force |
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| Country | Link |
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| CN (1) | CN102563135A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035876A (en) * | 2017-05-10 | 2017-08-11 | 安徽红星阀门有限公司 | A kind of low water damages pressure reduction type backflow preventer |
| CN109416131A (en) * | 2016-05-31 | 2019-03-01 | 多可姆有限公司 | Valve module |
| CN110302479A (en) * | 2019-05-30 | 2019-10-08 | 中国人民解放军空军特色医学中心 | Anti-suffocation valve |
| CN114352731A (en) * | 2021-12-21 | 2022-04-15 | 上海空间推进研究所 | Indirect-action normally-open electric explosion valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5497802A (en) * | 1995-01-17 | 1996-03-12 | Sloan Valve Company | Vandalproof cap for flush valve check valve |
| CN2426550Y (en) * | 2000-04-13 | 2001-04-11 | 刘庆 | Auto-control valve for deep well pump |
| CN101776172A (en) * | 2010-03-23 | 2010-07-14 | 浙江大学 | High voltage-resistant permanent magnet-shield high speed switching electromagnet |
| CN202371229U (en) * | 2011-12-16 | 2012-08-08 | 杭州春江阀门有限公司 | Check valve with high sealing force and low flow resistance |
-
2011
- 2011-12-16 CN CN201110422245XA patent/CN102563135A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5497802A (en) * | 1995-01-17 | 1996-03-12 | Sloan Valve Company | Vandalproof cap for flush valve check valve |
| CN2426550Y (en) * | 2000-04-13 | 2001-04-11 | 刘庆 | Auto-control valve for deep well pump |
| CN101776172A (en) * | 2010-03-23 | 2010-07-14 | 浙江大学 | High voltage-resistant permanent magnet-shield high speed switching electromagnet |
| CN202371229U (en) * | 2011-12-16 | 2012-08-08 | 杭州春江阀门有限公司 | Check valve with high sealing force and low flow resistance |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109416131A (en) * | 2016-05-31 | 2019-03-01 | 多可姆有限公司 | Valve module |
| US11143323B2 (en) | 2016-05-31 | 2021-10-12 | Do Qoom, Corp, Ltd. | Valve assembly |
| CN107035876A (en) * | 2017-05-10 | 2017-08-11 | 安徽红星阀门有限公司 | A kind of low water damages pressure reduction type backflow preventer |
| CN107035876B (en) * | 2017-05-10 | 2023-08-18 | 安徽红星阀门有限公司 | Low water loss decompression type backflow preventer |
| CN110302479A (en) * | 2019-05-30 | 2019-10-08 | 中国人民解放军空军特色医学中心 | Anti-suffocation valve |
| CN114352731A (en) * | 2021-12-21 | 2022-04-15 | 上海空间推进研究所 | Indirect-action normally-open electric explosion valve |
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Application publication date: 20120711 |
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| RJ01 | Rejection of invention patent application after publication |