CN203516963U - Anti-noise valve core and check valve comprising same - Google Patents
Anti-noise valve core and check valve comprising same Download PDFInfo
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- CN203516963U CN203516963U CN201320680561.1U CN201320680561U CN203516963U CN 203516963 U CN203516963 U CN 203516963U CN 201320680561 U CN201320680561 U CN 201320680561U CN 203516963 U CN203516963 U CN 203516963U
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- flap
- noise
- valve
- rubber ring
- circular groove
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Abstract
The utility model discloses an anti-noise valve core and a check valve comprising the same, and mainly solves problems that a valve clack of a conventional lift check valve produces high noise when backing to a seat, the service life of the valve clack is short and the like. The anti-noise valve core comprises a connecting shaft and a valve clack arranged at the tail end of the connecting shaft, wherein the valve clack is made of stainless steel; an annular groove surrounding the circumference of the valve clack is formed in the upper end surface of the valve clack; the section of the annular groove adopts a trapezoid, and one side, close to the connecting shaft, of the upper side and the lower side of the trapezoid is longer than the side, far away from the connecting shaft, of the upper side and the lower side of the trapezoid; an O-shaped rubber ring is embedded into the annular groove, a bulge matched with the trapezoid structure of the annular groove is arranged at the bottom of the O-shaped rubber ring, and after the O-shaped rubber ring is embedded into the annular groove, the upper end surface of the O-shaped rubber ring is higher than the upper end surface of the valve clack. The anti-noise valve core is simple in structure and low in cost, noise produced when the valve clack backs to the seat can be effectively avoided, and consequently, the anti-noise valve core is suitable for popularization and application.
Description
Technical field
The utility model belongs to field of mechanical technique, relates to a kind of valving, specifically, relates to the safety check of a kind of noise-proofing spool and formation thereof.
Background technique
Safety check is a kind of conventional valving, and safety check working principle is: under the mobile fluid pressure action of direction, flap is opened; When fluid flows in the other direction, by the Gravitative Loads of hydrodynamic pressure and flap, in flap, make flap descending, thereby cut off air-flow.
Compressor bank air outlet safety check adopts Lift check valve, in Lift check valve using process, occurs that flap bounces valve seat sound and represents that safety check returns seat, and still, it is also depositing following problem:
One, noise is large, its whomp has reached 107 decibels, considerably beyond in < < Industrial Enterprise Factory Boundary ambient noise emission standard > > GB12348-2008 between the daytime of ambient noise regulation 60 decibels, night the numerical value of 50 decibels;
Two, working life short, high strength, high-frequency bouncing in situation, very serious to the loss of flap, if flap occurs damagedly will causing larger damage to relevant devices such as compressor bank, and have influence on completing of annual supercharging exploitation production task;
Three, safety check valve clack sealing surface is metal sealing, causes flap to bounce sealing surface of seat back and forth and produces noise; And flap deadweight is larger, has accelerated returning of flap and sat.
Model utility content
The purpose of this utility model is to overcome above-mentioned defect, provide a kind of simple in structure, realize convenient, noise is low, the noise-proofing spool of long service life.
To achieve these goals, the technical solution adopted in the utility model is as follows:
A kind of noise-proofing spool, comprise coupling shaft and be arranged on the flap of this coupling shaft end, described flap is made by stainless steel, on end face, offer thereon around the circular groove of flap circumference one circle, the cross section of this circular groove is trapezoidal, and in these trapezoidal upper and lower both sides near coupling shaft while being greater than away from coupling shaft, at circular groove, be embedded with bottom and be provided with protruding " O " type rubber ring mating with the trapezium structure of circular groove, and should embed after circular groove by " O " type rubber ring, its upper-end surface is higher than the upper-end surface of flap.
The utility model also provides a kind of safety check, comprises valve body, valve seat, and the seal ring between valve gap and valve gap and valve body, also comprises the above-mentioned a kind of noise-proofing spool being connected with valve gap by coupling shaft.
Further, institute's noise-proofing spool comprises coupling shaft and is arranged on the flap that this coupling shaft end is right against valve seat; Wherein, flap is made by stainless steel, on end face, offer thereon around the circular groove of flap circumference one circle, the cross section of this circular groove is trapezoidal, at circular groove, be embedded with bottom and be provided with protruding " O " type rubber ring mating with the trapezium structure of circular groove, and should embed after circular groove by " O " type rubber ring, its upper-end surface is higher than the upper-end surface of flap, and flap contacts with valve seat by the upper-end surface of " O " type rubber ring.
The design principle of this utility model: first, adopt stainless steel to replace original flap material as flap material, reduce the deadweight of flap; Then, adopt soft contact to replace hard contact of the prior art, utilize the buffering property of soft contact, when reducing flap and returning, flap clashes into the noise of generation with valve seat.
Compared with prior art, the beneficial effects of the utility model are:
(1) the utility model is simple in structure, with low cost, realization is convenient.
(2) the utility model replaces with stainless steel by the material of flap material of flap in prior art, reduces flap deadweight, also makes safety check more easily open; Simultaneously, sealing surface at flap is offered circular groove, and at circular groove, be embedded in " O " type rubber ring, and should play on the one hand seal action by " O " type rubber ring, replaced metal sealing of the prior art, on the other hand, the thickness of " O " type rubber ring will be higher than flap seal face, and when flap returns, first " O " type rubber ring contacts with valve seat, utilize " O " type rubber ring between flap and valve seat, to form a soft buffering, thereby effectively reduce the noise that produces when flap bounces valve seat.
(3) in the utility model, the cross section of circular groove is trapezoidal, and in these trapezoidal upper and lower both sides near coupling shaft while being greater than away from coupling shaft, simultaneously, the bottom of " O " type rubber ring is provided with the projection with the trapezium structure form fit of circular groove, utilize the elasticity of rubber that " O " type rubber ring is inlaid in circular groove, on the one hand, improve sealing effect, on the other hand, can effectively prevent that " O " type rubber ring from dropping.
(4) the utility model compared with prior art, not only possesses novelty and creativeness, and its material is common material, cheap, possesses very high practicability and the market competitiveness, for it, applies on a large scale, has established solid foundation.
Accompanying drawing explanation
Fig. 1 is the structural representation of explosion-proof spool in the utility model.
Fig. 2 is the partial schematic diagram of flap.
Fig. 3 is the exploded perspective view in explosion-proof spool cross section.
Fig. 4 is the structural representation of safety check in the utility model.
Wherein, the corresponding title of reference character: 1-coupling shaft, 2-flap, 3-circular groove, 4-" O " type rubber ring, 5-valve body, 6-valve seat, 7-valve gap, 8-seal ring.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.Mode of execution of the present utility model includes but not limited to the following example.
Embodiment
The switch of Lift check valve flap determines by the acting in conjunction of three power, i.e. pressure P before flap
1pressure P after (supercharging unit exhaust pressure) and flap
2the pressure P that the deadweight of (outer defeated ductwork pressure), flap produces
3(P
3=mg/s, the quality that m is flap, the cross-section area that s is flap), P
1-P
2>P
3, flap is opened, P
1-P
2<P
3, flap is closed.The flap of existing safety check is from great, and sealing surface is metal sealing, causes flap to return a noise large, flap impaired serious, working life is shorter.In order to overcome the defect of prior art, the present embodiment provides a kind of noise-proofing spool, as shown in Figure 1, 2, 3, this spool is mainly conducted oneself with dignity by reduction and hard between flap and valve seat is contacted and be converted to soft contact and reach when reducing flap and returning, reduces the object of noise.
Specifically, noise-proofing spool comprises coupling shaft 1 and is arranged on the flap 2 of coupling shaft 1 end, and in the present embodiment, flap is replaced former flap material by No. 304 stainless steels.According to safety check flap thickness equations:
Wherein, Dmp: sealing surface average diameter; PN: nominal pressure; σ: yield strength; C: corrosion allowance, H=17.3mm as calculated, thus, the thickness of flap should be greater than 17.3mm, usually, selects 22mm, so that " O " type of installation rubber ring; Than existing flap, in the present embodiment flap thickness reduction 5mm.The change of flap material, has reduced the deadweight of flap effectively.
Further, the present embodiment, at the sealing surface of flap, offers on its upper-end surface around the circular groove 3 of flap circumference one circle, at circular groove 3, is embedded with " O " type rubber ring 4 that shape matches, and should embed after circular groove 3 by " O " type rubber ring 4, its upper-end surface is higher than the upper-end surface of flap 2.When flap returns, first " O " type rubber ring contacts with valve seat, " O " type of utilization rubber ring forms a soft buffering between flap and valve seat, realization changes contacting by hard contact of the prior art between valve seat and flap into soft contact, thereby effectively reduce the noise producing when flap bounces valve seat, meanwhile, " O " type rubber ring can be offset the power of flap while returning, reduces the loss to flap.
Consider when flap returns, " O " type rubber ring is arranged on the soundness on flap, in the present embodiment, the cross section of circular groove is trapezoidal, as shown in Figure 3, in trapezoidal upper and lower both sides near coupling shaft while being greater than away from coupling shaft, meanwhile, the bottom of " O " type rubber ring is provided with the projection of mating with the trapezium structure of circular groove, utilize the elasticity of rubber that " O " type rubber ring is inlaid in circular groove, on the one hand, improve sealing effect, on the other hand, can effectively prevent that " O " type rubber ring from dropping.What deserves to be explained is, the present embodiment flap can be reequiped on the basis of existing flap, so that when PRODUCTION STATUS changes again afterwards, can exchange.
On the basis of above-mentioned noise-proofing spool, the present embodiment also provides a kind of safety check, as shown in Figure 4, this safety check comprises valve body 5, valve seat 6, the seal ring 8 between valve gap 7 and valve gap and valve body, also comprises the noise-proofing spool being connected with valve gap 7 by coupling shaft 1.
Test to the safety check of application noise-proofing spool:
1, housing pressure testing: because the main pressure-containing parts such as its valve body, valve gap is not changed, so this safety check still meets former pressure rank,
2, sealing test: the test of falling hermetic seal, checks without leaking.
3, noise test: after rectification, noise disappears.
4, flap thickness also meets the requirements as calculated, and flap material is used No. 304 stainless steels instead has increased its intensity.
5, reduced flap gravity pressure, safety check is more easily opened.
6, economic evaluation: processing flap expense amounts to 660 yuan (containing " O " type rubber ring), reduces by 3600 yuan of left and right than changing other similar valve, and cost performance is high.
According to above-described embodiment, just can realize well the utility model.What deserves to be explained is; under prerequisite based on above-mentioned design principle; for solving same technical problem; even if some that make on architecture basics disclosed in the utility model are without substantial change or polishing; the essence of the technological scheme adopting is still the same with the utility model, therefore it also should be in protection domain of the present utility model.
Claims (3)
1. a noise-proofing spool, comprise coupling shaft (1) and be arranged on the flap (2) of this coupling shaft (1) end, it is characterized in that, described flap (2) is made by stainless steel, on end face, offer thereon around the circular groove (3) of flap (2) circumference one circle, the cross section of this circular groove is trapezoidal, and in these trapezoidal upper and lower both sides near coupling shaft (1) while being greater than away from coupling shaft (1), at circular groove (3), be embedded with bottom and be provided with protruding " O " type rubber ring (4) mating with the trapezium structure of circular groove, and should embed after circular groove (3) by " O " type rubber ring (4), its upper-end surface is higher than the upper-end surface of flap (2).
2. a safety check, comprise valve body (5), valve seat (6), the seal ring (8) between valve gap (7) and valve gap and valve body, it is characterized in that, also comprise the as claimed in claim 1 a kind of noise-proofing spool being connected with valve gap (7) by coupling shaft (1).
3. a kind of safety check according to claim 2, is characterized in that, institute's noise-proofing spool comprises coupling shaft (1) and is arranged on the flap (2) that this coupling shaft (1) end is right against valve seat (6); Wherein, flap (2) is made by stainless steel, on end face, offer thereon around the circular groove (3) of flap (2) circumference one circle, the cross section of this circular groove is trapezoidal, in circular groove, (3) are embedded with bottom and are provided with protruding " O " type rubber ring (4) mating with the trapezium structure of circular groove, and should embed after circular groove (3) by " O " type rubber ring (4), its upper-end surface is higher than the upper-end surface of flap (2), and flap (2) contacts with valve seat (6) by the upper-end surface of " O " type rubber ring (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320680561.1U CN203516963U (en) | 2013-10-31 | 2013-10-31 | Anti-noise valve core and check valve comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320680561.1U CN203516963U (en) | 2013-10-31 | 2013-10-31 | Anti-noise valve core and check valve comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203516963U true CN203516963U (en) | 2014-04-02 |
Family
ID=50375894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320680561.1U Expired - Fee Related CN203516963U (en) | 2013-10-31 | 2013-10-31 | Anti-noise valve core and check valve comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203516963U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111981168A (en) * | 2020-08-31 | 2020-11-24 | 四川长仪油气集输设备股份有限公司 | Pilot operated safety valve |
-
2013
- 2013-10-31 CN CN201320680561.1U patent/CN203516963U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111981168A (en) * | 2020-08-31 | 2020-11-24 | 四川长仪油气集输设备股份有限公司 | Pilot operated safety valve |
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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: 20140402 Termination date: 20141031 |
|
| EXPY | Termination of patent right or utility model |