CN101737535B - Simple and durable mute check valve - Google Patents
Simple and durable mute check valve Download PDFInfo
- Publication number
- CN101737535B CN101737535B CN2009102145485A CN200910214548A CN101737535B CN 101737535 B CN101737535 B CN 101737535B CN 2009102145485 A CN2009102145485 A CN 2009102145485A CN 200910214548 A CN200910214548 A CN 200910214548A CN 101737535 B CN101737535 B CN 101737535B
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- China
- Prior art keywords
- axle sleeve
- support ring
- deflector
- housing
- wheel hub
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Abstract
The invention provides a simple and durable mute check valve, which comprises a shell, a sealing ring, a rectifying cover, a diffuser and a spring. The shell is connected with the diffuser through a support frame; the support frame comprises a support ring and a mounting shaft; the support ring is arranged at the outlet of the shell; the mounting shaft is vertical to the support ring and extends in the shell; the outlet of the shell is provided with a support ring mounting groove matched with the support ring; and a first shaft sleeve matched with the mounting shaft is arranged at the tail end inside the diffuser. The simple and durable mute check valve reduces the moment arm of an impact force relative to a connecting part, effectively reduces moment and avoids damage.
Description
Technical field
The invention belongs to safety check and make the field, particularly relate to a kind of simple and durable mute check valve.
Background technique
Safety check is the primary element of fluid Control Engineering, uses very extensive.It plays the effect of other fluid machineries of protection and pipeline safety by preventing fluid countercurrent current.The valve plate closing velocity is very fast in the conventional check valves, and generally speaking, safety check is installed on the pipeline of pump outlet end connection, and the pump discharge end of disembarking is nearer, in order to stop the tube fluid adverse current to the destruction that pump may cause, pump is shielded.What pipe-line system use at present was maximum is rotary-open type and Lift check valve.When the downstream valve was closed at short notice, water hammer will take place in pipe-line system, and safety check cuts out automatically because of cutout in the pipeline, and surge wave acts directly on the safety check, can cause the damage of valve when serious.Water hammer accident and safety check lost efficacy and were coupled usually.The too fast keying of safety check can cause water hammer, and water hammer destroys safety check, thereby causes chain reaction in the loop, and more fluid parts (comprising other safety check) are impaired, makes the accident upgrading; No matter this vicious circle begins on which link, and its result is serious.
Existing safety check, no matter be rotary-open type, rise-fall type, or oblique dish formula safety check, they have a common feature when opening and closing, promptly open or close in the closed procedure, valve plate is in accelerating process all the time, makes the valve motion parts stop preceding excessive velocities, the immediate cause that Here it is causes safety check water hammer and flap to clash into.In order to solve safety check water attack and flap bump problem, the safety check that three kinds of valve plates have damper has appearred: mechanical damping formula safety check, waterpower damped type safety check and mix the damped type safety check.The advantage of mechanical damping formula safety check is that the damping characteristic of damper is easy to set by mechanical structure, shortcoming is along with rate of flow of fluid in the pipeline and flow increase, it is huge and complicated that corresponding damping mechanism will become, and when widening along with pipeline flow change in flow territory, the low discharge flow velocity open and shut characteristic of safety check can severe exacerbation (being the normally opening and closing of low discharge flow velocity operating mode).Waterpower damped type safety check adopts specified structure, makes its moving element must reduce moving element kinetic energy to certain segment fluid flow acting when finishing switching motion, reaches to prolong dam time and the purpose of alleviating the flap bump.The advantage of this scheme is that check valve structure is simple, operational reliability is high, shortcoming is the complicated movement of fluid in valve body, be difficult to make the waterpower damping characteristic reach the requirement of regulation by the parametrization design, design cost is higher, and along with pipeline flow velocity and flow increase, the required damping of waterpower damper also increases thereupon, for big flow, big flow velocity and to the pipeline physical dimension pipeline of lower limit requirement is arranged, and waterpower damped type safety check has certain defective.Mixing the damped type safety check is the design that mechanical damper is combined with the waterpower damper.The mutual supplement with each other's advantages by two kinds of dampers is attempted in this design, optimizes the open and shut characteristic of safety check.According to domestic and international patent, this scheme does not obtain significant breakthrough.A common drawback of damped type safety check is that valve plate is slowly closed and caused part backflow to blow back into water pump easily, makes the water pump reversing.
Remove above-mentioned described safety check, also have DRV, the safety check that liquidates, waterproof plumb bob shape safety check etc.DRV is closed the move distance weak point that the little reason of sound is a valve plate, but can not eliminate water hammer; In fact the formula safety check of liquidating belongs to waterpower damped type safety check; The anti-water hammer effect of ball check valve is better, but structure is too complicated, and sealing surface is too much, the manufacturing expense height.
Chinese patent application number is that 00226289.4 utility model patent discloses a kind of pipeline safety check, particularly about pipeline with the upright double-purpose DRV that crouches.It comprises that valve body, valve seat, seal ring, flap, spring constitute, it is characterized in that: be fixedly connected with deflector on the valve body, deflector is fixedlyed connected with valve rear end, the deflector front end is provided with the axis of guide, supporting by the axis of guide and flap, the deflector inner chamber connects the axis of guide, is with flap in the axis of guide, is with spring on the flap; Be placed with seal ring on the valve seat, be pressed with retainer ring on the seal ring, retainer ring is fixed on the valve body.The disclosed DRV of this model utility, because deflector is fixedly mounted on valve rear end, and deflector is by be provided with the axis of guide at the deflector front end with being connected of flap, supporting by the axis of guide and flap, so the mutual bump of flap and deflector occurs in the front end of deflector when using, and be used for fixing deflector is arranged on deflector to the connected element on the valve body rear end is installed, so occur in the flap of deflector front end and the collision between the deflector for the connected element of deflector rear end, its arm of force is longer, moment is bigger, so after using a period of time, connected element damages easily, causes whole DRV to be scrapped.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of DRV of simple in structure and long service life is provided.
In order to realize the foregoing invention purpose, the technological scheme of employing is as follows:
A kind of simple and durable mute check valve, comprise housing, seal ring, cowling, deflector, spring, described housing is connected by supporting frame with deflector, support frame as described above comprises the support ring that is installed in the housing outlet port, and it is vertical with support ring and stretch to the installation shaft of enclosure interior, the outlet port of described housing is provided with the support ring mounting groove that cooperates with support ring, and the interior extremity of described deflector is provided with first axle sleeve that cooperates with installation shaft.
Further, described cowling is provided with second axle sleeve, and the internal diameter of described second axle sleeve is bigger slightly than the external diameter of first axle sleeve, and second axle sleeve to stretch into deflector inner and be enclosed within the outer surface of first axle sleeve.
Support frame as described above is made of support ring, dunnage, installation shaft, deflector baffle ring, and described support ring is circle structure, and described dunnage is for being radial sheet lath to annulus from this annulus axle center.
Described housing comprises cylindrical section and support ring mounting groove, and cylindrical section is in the centre of housing, and its inwall is the cylndrical surface, and the support ring mounting groove is in the end of housing.
Described deflector is made of the wheel hub and first axle sleeve, and described wheel hub is a solid of rotation that front end is big, the rear end is little, and its bus is a curve, and described first axle sleeve is cylindrical, and its bottom is arranged on the rear end of wheel hub, and extends to wheel hub inside along the axle center of wheel hub.
Described first axle sleeve comprises first cylindrical section corresponding with installation shaft, and second cylindrical section corresponding with the deflector baffle ring.
Described cowling is made of rectification cover body, the sealing surface that cooperates with seal ring, the end face that cooperates with the front end of wheel hub, second axle sleeve that cooperates with first axle sleeve, described rectification cover body is a solid of rotation, its bus is a curve, described sealing surface is the part of rectification cover body, the outer diameter of described end face is identical with the outer diameter of front end, and when end face and front end are adjacent to, bus overlaps with the tangent line of bus in the joint place of wheel hub, the internal face of described second axle sleeve is the cylndrical surface, and its internal diameter is bigger slightly than the external diameter of first axle sleeve.
Described second axle sleeve is enclosed within the outer surface of first axle sleeve, and is provided with spring between second axle sleeve and first axle sleeve.
The inlet of described housing is provided with the seal ring mounting groove.
The present invention by supporting frame as the connected element between deflector and the housing, this supporting frame is installed on the housing by support ring, because the Area of bearing of support ring is bigger, so connect comparatively firmly, and durable, and deflector cooperates with cowling by first axle sleeve that is provided with endways, make the impact force between cowling and the deflector also act on the end of deflector, reduced the arm of force of impact force, effectively reduced moment, avoided damaging with respect to connected element.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a deflector structural representation of the present invention;
Fig. 3 is a shell construction schematic representation of the present invention;
Fig. 4 is a dome structure schematic representation of the present invention.
Fig. 5 is a support frame structure schematic representation of the present invention.
Embodiment
The present invention is described further below in conjunction with accompanying drawing.
Structure of the present invention is made of housing 2, seal ring 3, cowling 4, deflector 5, support ring 6, spring 7 as shown in Figure 1.
Be deflector 5 structures of the present invention as shown in Figure 2, constitute by wheel hub 54, first axle sleeve 53.The solid of rotation that wheel hub 54 is that a front end 55 is big, rear end 56 is little, its bus is circular arc line, oval camber line or other forms of curve.
Be the structure of housing 2 as shown in Figure 3, constitute by seal ring mounting groove 21, cylindrical section 22 and support ring mounting groove 23.Its general characteristic is for being a cylindrical section 22 at the housing intermediate section, and its inwall also is the cylndrical surface.
Be the structure of cowling 4 as shown in Figure 4, constitute by rectification cover body 41, the sealing surface 43 that cooperates with the sealing surface of seal ring 3, the end face 45 that cooperates with wheel hub front end 55, second axle sleeve 44 that cooperates with first axle sleeve 53.Described rectification cover body 41 is a solid of rotation, and its bus 42 is the spline curve of a fairing, and purpose is to enter valve body with making the fluid fairing.Described sealing surface 43 is the part of rectification cover body 41, and when closure of check ring, sealing surface 43 matches with seal ring on the seal ring mounting groove 21 that is installed in housing 2, realizes sealing.The outer diameter of described end face 45 is identical with the outer diameter of wheel hub front end 55, and when end face 45 and wheel hub front end 55 were adjacent to, bus 42 overlapped with the tangent line of bus in the joint place of wheel hub 5.The internal face of described second axle sleeve 44 is the cylndrical surface, can slide along the external cylindrical surface of first axle sleeve 53, is provided with spring 7 between second axle sleeve 44 and first axle sleeve 53.
Be the structure of supporting frame 6 as shown in Figure 5, constitute by support ring 64, dunnage 63, wheel hub baffle ring 62, axle 61.Described support ring 64 is installed in the support ring mounting groove 23 of housing 2.Described dunnage 63 is from radial several the flat plates of axis, and described axle 61 cooperates with the internal face of first axle sleeve 53.
Claims (8)
1. simple and durable mute check valve, comprise housing (2), seal ring (3), cowling (4), deflector (5), spring (7), it is characterized in that described housing (2) is connected by supporting frame (6) with deflector (5), support frame as described above (6) comprises the support ring (64) that is installed in housing (2) outlet port, and installation shaft (61) vertical with support ring (64) and that stretch to housing (2) inside, the outlet port of described housing (2) is provided with the support ring mounting groove (23) that cooperates with support ring (64), and the interior extremity of described deflector (5) is provided with first axle sleeve (53) that cooperates with installation shaft (61);
Described deflector (5) is made of wheel hub (54) and first axle sleeve (53), described wheel hub (54) is that a front end (55) is big, the little solid of rotation in rear end (56), its bus is a curve, described first axle sleeve (53) is cylindrical, its bottom is arranged on the rear end (56) of wheel hub (54), and extends to wheel hub (54) inside along the axle center of wheel hub (54).
2. DRV according to claim 1, it is characterized in that described cowling (4) is provided with second axle sleeve (44), the internal diameter of described second axle sleeve (44) is bigger slightly than the external diameter of first axle sleeve (53), and second axle sleeve (44) to stretch into deflector (5) inner and be enclosed within the outer surface of first axle sleeve (53).
3. DRV according to claim 1 and 2, it is characterized in that support frame as described above (6) is made of support ring (64), dunnage (63), installation shaft (61), deflector baffle ring (62), described support ring (64) is circle structure, and described dunnage (63) is for being radial sheet lath to annulus from this annulus axle center.
4. DRV according to claim 3, it is characterized in that described housing (2) comprises cylindrical section (22) and support ring mounting groove (23), cylindrical section (22) is in the centre of housing (2), and its inwall is the cylndrical surface, and support ring mounting groove (23) is in the end of housing (2).
5. DRV according to claim 4 is characterized in that described first axle sleeve (53) comprises first cylindrical section corresponding with installation shaft (61), and second cylindrical section corresponding with deflector baffle ring (62).
6. DRV according to claim 5, it is characterized in that cowling (4) is by rectification cover body (41), the sealing surface (43) that cooperates with seal ring (3), the end face (45) that cooperates with the front end (55) of wheel hub (54), second axle sleeve (44) that cooperates with first axle sleeve (53) constitutes, described rectification cover body (41) is a solid of rotation, its bus (42) is a curve, described sealing surface (43) is the part of rectification cover body (41), the outer diameter of described end face (45) is identical with the outer diameter of front end (55), and when the front end (55) of end face (45) and wheel hub (54) when being adjacent to, the bus (42) of rectification cover body (41) overlaps with the tangent line of bus in the joint place of wheel hub (54), the internal face of described second axle sleeve (44) is the cylndrical surface, and its internal diameter is bigger slightly than the external diameter of first axle sleeve (53).
7. DRV according to claim 6 is characterized in that described second axle sleeve (44) is enclosed within the outer surface of first axle sleeve (53), and is provided with spring (7) between second axle sleeve (44) and first axle sleeve (53).
8. DRV according to claim 1 is characterized in that the inlet of described housing (2) is provided with seal ring mounting groove (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102145485A CN101737535B (en) | 2009-12-31 | 2009-12-31 | Simple and durable mute check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102145485A CN101737535B (en) | 2009-12-31 | 2009-12-31 | Simple and durable mute check valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101737535A CN101737535A (en) | 2010-06-16 |
| CN101737535B true CN101737535B (en) | 2011-12-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102145485A Expired - Fee Related CN101737535B (en) | 2009-12-31 | 2009-12-31 | Simple and durable mute check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101737535B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805366B (en) * | 2016-05-27 | 2018-05-08 | 中国科学院武汉岩土力学研究所 | The separating dry space from moist space method of adjustable hydraulic tunnel engineering separating dry space from moist space non-return valve |
| CN106641349B (en) * | 2016-11-29 | 2019-06-18 | 福建工程学院 | A kind of streamlined fluid one-way flow device |
| US11313482B2 (en) * | 2019-11-14 | 2022-04-26 | Entegris, Inc. | Welded check valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2153686Y (en) * | 1992-04-30 | 1994-01-19 | 永嘉县化工机械阀门厂 | Non-return valve with guided stem |
| US5921276A (en) * | 1995-10-17 | 1999-07-13 | Stream-Flo Industries, Ltd. | Piston-type check valve with diffuser |
| CN2416308Y (en) * | 2000-04-12 | 2001-01-24 | 管云初 | Horizontal & vertical two-purpose silient check valve |
| CN2851767Y (en) * | 2005-09-22 | 2006-12-27 | 上海冠龙阀门机械有限公司 | Flow guide type silent check valve |
-
2009
- 2009-12-31 CN CN2009102145485A patent/CN101737535B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2153686Y (en) * | 1992-04-30 | 1994-01-19 | 永嘉县化工机械阀门厂 | Non-return valve with guided stem |
| US5921276A (en) * | 1995-10-17 | 1999-07-13 | Stream-Flo Industries, Ltd. | Piston-type check valve with diffuser |
| CN2416308Y (en) * | 2000-04-12 | 2001-01-24 | 管云初 | Horizontal & vertical two-purpose silient check valve |
| CN2851767Y (en) * | 2005-09-22 | 2006-12-27 | 上海冠龙阀门机械有限公司 | Flow guide type silent check valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101737535A (en) | 2010-06-16 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| 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: 20111228 Termination date: 20141231 |
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| EXPY | Termination of patent right or utility model |