CN202252178U - Adjustable two-section damping axial flow type check valve - Google Patents
Adjustable two-section damping axial flow type check valve Download PDFInfo
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- CN202252178U CN202252178U CN2011203543213U CN201120354321U CN202252178U CN 202252178 U CN202252178 U CN 202252178U CN 2011203543213 U CN2011203543213 U CN 2011203543213U CN 201120354321 U CN201120354321 U CN 201120354321U CN 202252178 U CN202252178 U CN 202252178U
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Abstract
The utility model relates to an adjustable two-section damping axial flow type check valve. A valve shaft is connected behind a valve core arranged in a valve body, a damping cylinder body is arranged in the valve body, a front side throttle valve communicated with the inside of the valve body is arranged at the front end of an inner cavity of the damping cylinder body, a valve shaft hole is arranged at a cylinder cover at the front end of the damping cylinder body, the back end of the damping cylinder body is provided with liquid feeding and discharging holes, the inner cavity of the damping cylinder body is provided with a front section cylinder body inner cavity and a back section cylinder body inner cavity with different inner diameters, the cylinder body inner cavity is provided with a damping cylinder plug, the other end of the valve shaft is connected with the damping cylinder plug, a one-way valve with the flow direction from the back side to the front side is arranged on the damping cylinder plug, the front end of the back section cylinder inner cavity is provided with a lateral pipe communicated with the inside of the valve body, and a back side throttle valve communicated with the inner cavity of the cylinder body and the inside of the valve body is arranged in the lateral pipe. Both a front section damping mechanism and a back section damping mechanism of the adjustable two-section damping axial flow type check valve are respectively provided with side throttle valves, when fluid in a fluid pipeline backwards flow, the front section damping mechanism and the back section damping mechanism are manually regulated, different closing characteristics of check valves can be obtained for adapting to different fluid conveying work condition requirements, and the adjustable two-section damping axial flow type check valve has the optimum closing characteristics adapting to the fluid conveying work conditions.
Description
Technical field
The utility model relates to a kind of back segment damping mechanism of two sections damping axial flow type check valves, particularly a kind of two stage damping axial flow type check valve.
Background technique
Safety check is the valve with the mobile keying of fluid.Safety check is installed on the fluid pipe-line, can let fluid only flow towards a direction, and safety check can cut out automatically when the fluid in the fluid pipe-line flows backwards.Safety check load change when closing is bigger, and the closing property of safety check influences the hydrodynamic parameters in the pipeline.Safety check is when cutting out, and the fitness for purpose safety check is swift in response, i.e. quick closedown when flowing backwards appears in flowing medium; By the flowing medium that flows backwards; If but close too fastly, and the flow velocity of flowing medium reduces to zero rapidly from the refluence speed of maximum in the pipeline, and the kinetic energy of flowing medium changes into static energy rapidly; Make that the pressure of flowing medium raises rapidly in the pipeline, generation can have the water hammer of destruction to pipe-line system.In order to eliminate the water hammer that safety check is in operation, in the existing technology, a kind of two sections damping axial flow type check valves are disclosed among the Chinese patent ZL 2,008 1 0230172.2; These two sections damping axial flow type check valves have the tubular valve body, and the front and back ends of valve body has the inlet/outlet of axis on same straight line of axis and valve body respectively, and there is the annular valve sealing seat of axis on same straight line of axis and tubular valve body the front side in the valve body; The spool that matches with the valve seal seat is arranged in the valve body, and the center of spool back is connected with axis with spool at the valve shaft on same straight line, and the axis that axis and tubular valve body are arranged in the valve body is at the resistance cylinders on same straight line; Resistance cylinders and valve interior wall are connected with gusset; The front end of resistance cylinders inner chamber have with valve body in the side direction pipe that communicates, have in the side direction pipe to be communicated with inner chamber of cylinder block and the interior side direction throttle valve of valve body, the handle of side direction throttle valve is outside valve body; The front end of resistance cylinders has cylinder cap; There is the valve shaft hole at the center of cylinder cap, and there is into outage the rear end of resistance cylinders, and the resistance cylinders inner chamber has little, the different forward and backward two sections inner chamber of cylinder block of internal diameter; Inner chamber of cylinder block has the damped cylinder plug that matches with clearance fit relationship with the leading portion inner chamber of cylinder block; The other end of valve shaft links to each other with the damped cylinder plug through the valve shaft hole, between valve shaft and the valve shaft hole seal ring is arranged, damped cylinder have beyond the Great Wall from after the one-way valve of the flow direction forward.
Above-mentioned two stage damping axial flow type check valve is installed on the fluid pipe-line and uses, and its front end is connected in the upper reaches of fluid.Fluid is when forward flow; The fluid of forward flow can promote spool and leave that the valve seat of front side slides backward along valve axis in the valve body, opens safety check, when spool slides backward; Promote the damped cylinder plug through valve shaft and slide into the back segment inner chamber of cylinder block from the leading portion inner chamber of cylinder block; In the process that the damped cylinder plug slides backward, the fluid of damped cylinder plug rear side gets into the leading portion cylinder body through damped cylinder one-way valve beyond the Great Wall in the resistance cylinders inner chamber, and the fluid in the fluid pipe-line can flow in the past backward.When the fluid in the fluid pipe-line from after when flowing backwards forward; The fluid that flows backwards can promote spool along valve axis to front slide; Spool in the process of front slide, through valve shaft drive the damped cylinder plug at the resistance cylinders inner chamber from the back to front slide, the damped cylinder plug from after forward the sliding process; Back segment inner chamber of cylinder block through the resistance cylinders inner chamber gets into the leading portion inner chamber of cylinder block more earlier; Be that relation with Spielpassung matches between leading portion inner chamber of cylinder block and the damped cylinder plug, between back segment inner chamber of cylinder block and the damped cylinder plug gap greater than above-mentioned matching gap arranged, the damped cylinder plug is at the back segment inner chamber of cylinder block during to front slide; Need to enter the gap of the fluid of damped cylinder plug front side elder generation through between damped cylinder plug and back segment inner chamber of cylinder block the rear side of damped cylinder plug; Earlier to the damped cylinder plug from after forward slip slide and produce certain resistance, safety check is produced certain Slow Close effect, the gap between damped cylinder plug and back segment inner chamber of cylinder block is the back segment damping mechanism; After the damped cylinder plug slided into the leading portion inner chamber of cylinder block, because damped cylinder plug and leading portion inner chamber of cylinder block are Spielpassung, damped cylinder had one-way valve beyond the Great Wall; Fluid between damped cylinder plug and the cylinder cap is difficult to discharge from the gap of Spielpassung; Fluid between damped cylinder plug and the cylinder cap produces bigger resistance to the slip of damped cylinder plug, makes closure of check ring slower, at this moment; Fluid between damped cylinder plug and the cylinder cap can flow out through the side direction throttle valve; Again to the damped cylinder plug from after forward slip produce damping function, regulate the aperture of side direction throttle valve, regulate the fluid of discharging between damped cylinder plug and the cylinder cap; Can regulate the shut-in time of safety check at leading portion, the side direction throttle valve is the leading portion damping mechanism.Forward and backward two sections damping mechanisms can play the water hammer that produces when eliminating closure of check ring.
This two sections damping axial flow type check valves have forward and backward two sections damping mechanisms; In the leading portion damping mechanism; Aperture according to fluid regulating working conditions side direction throttle valve can be regulated the damping function of safety check at leading portion, and in the back segment damping mechanism, the gap between damped cylinder plug and back segment inner chamber of cylinder block is that design determines with manufacturing; Be can not regulating of fixing, the damping function of back segment is also fixed.When the different fluids operating mode, the back segment damping mechanism can not be regulated, and can not adapt to the requirement that different fluid is carried operating mode sometimes.
Summary of the invention
The purpose of the utility model is in order to overcome above-mentioned deficiency, to propose adjustable two sections damping axial flow type check valves that a kind of back segment damping mechanism also can be regulated.
The utility model is realized with following method.
Adjustable two sections damping axial flow type check valves have the tubular valve body, and the front and back ends of valve body has the inlet/outlet of axis on same straight line of axis and valve body respectively, and there is the annular valve sealing seat of axis on same straight line of axis and tubular valve body the front side in the valve body; The spool that matches with the valve seal seat is arranged in the valve body, and the center of spool back is connected with axis with spool at the valve shaft on same straight line, and the axis that axis and tubular valve body are arranged in the valve body is at the resistance cylinders on same straight line; Resistance cylinders and valve interior wall are connected with gusset; The front end of resistance cylinders inner chamber have with valve body in the side direction pipe that communicates, have in the side direction pipe to be communicated with the interior front side of inner chamber of cylinder block and valve body to throttle valve, the handle of side direction throttle valve is outside valve body; The front end of resistance cylinders has cylinder cap; There is the valve shaft hole at the center of cylinder cap, and there is into outage the rear end of resistance cylinders, and the resistance cylinders inner chamber has little, the different forward and backward two sections inner chamber of cylinder block of internal diameter; Inner chamber of cylinder block has the damped cylinder plug that matches with clearance fit relationship with the leading portion inner chamber of cylinder block; The other end of valve shaft links to each other with the damped cylinder plug through the valve shaft hole, between valve shaft and the valve shaft hole seal ring is arranged, damped cylinder have beyond the Great Wall from after the one-way valve of the flow direction forward; The front end of back segment inner chamber of cylinder block have with valve body in the side direction pipe that communicates, have in the side direction pipe to be communicated with the interior rear side of inner chamber of cylinder block and valve body to throttle valve.
During use, the utility model uses with above-mentioned two sections the same being installed on the fluid pipe-line of damping axial flow type check valve of the prior art.When the fluid in the fluid pipe-line from after when flowing backwards forward; The fluid that flows backwards can promote spool along valve axis to front slide; Spool needs to enter the rear side of damped cylinder plug to the fluid of damped cylinder plug front side in the gap through between damped cylinder plug and back segment inner chamber of cylinder block earlier in the process of front slide, earlier to the damped cylinder plug from after forward the slip certain resistance of generation that slides; Simultaneously also can be in throttle valve enters valve body through rear side; Regulate the aperture of rear side, regulate and discharge the fluid between damped cylinder plug and the cylinder cap, can regulate the shut-in time of safety check at back segment to throttle valve.
Forward and backward two sections damping mechanisms of the utility model all have the side direction throttle valve; When the fluid in the fluid pipe-line from after when flowing backwards forward; With the forward and backward two sections damping mechanisms of manual tune; Can obtain the different closing property of safety check, carry working condition requirement, make to the utlity model has the best closing property that adapts to the FLUID TRANSPORTATION operating mode to adapt to different fluids.
Below in conjunction with accompanying drawing, the utility model is done explanation further.
Description of drawings
Fig. 1 is the main cross-sectional schematic according to a kind of adjustable two sections damping axial flow type check valves of the model utility scheme proposition of the utility model.
Embodiment
Among Fig. 1, adjustable two sections damping axial flow type check valves have tubular valve body 1, and the front and back ends of valve body has the inlet/outlet 2,3 of axis on same straight line of axis and valve body respectively; There is the annular valve sealing seat 4 of axis on same straight line of axis and tubular valve body front side in the valve body; The spool 5 that matches with the valve seal seat is arranged in the valve body, and the center of spool back is connected with axis with spool at the valve shaft on same straight line 6, and the axis that axis and tubular valve body are arranged in the valve body is at the resistance cylinders on same straight line 7; Resistance cylinders and valve interior wall are connected with gusset 8; The front end of resistance cylinders inner chamber have with valve body in the side direction pipe 9 that communicates, have in the side direction pipe to be communicated with the interior front side of inner chamber of cylinder block and valve body to throttle valve 10, the handle 11 of side direction throttle valve is outside valve body; The front end of resistance cylinders has cylinder cap 12; There is valve shaft hole 13 at the center of cylinder cap, and there is into outage 14 rear end of resistance cylinders, and the resistance cylinders inner chamber has little, the different forward and backward two sections inner chamber of cylinder block 15,16 of internal diameter; Inner chamber of cylinder block has the damped cylinder plug 17 that matches with clearance fit relationship with the leading portion inner chamber of cylinder block; The other end of valve shaft links to each other with the damped cylinder plug through the valve shaft hole, between valve shaft and the valve shaft hole seal ring 18 is arranged, damped cylinder have beyond the Great Wall from after the one-way valve 19 of the flow direction forward; The front end of back segment inner chamber of cylinder block have with valve body in the side direction pipe 20 that communicates, have in the side direction pipe to be communicated with the interior rear side of inner chamber of cylinder block and valve body to throttle valve 21.
Claims (1)
1. adjustable two sections damping axial flow type check valves have the tubular valve body, and the front and back ends of valve body has the inlet/outlet of axis on same straight line of axis and valve body respectively; There is the annular valve sealing seat of axis on same straight line of axis and tubular valve body front side in the valve body; The spool that matches with the valve seal seat is arranged in the valve body, and the center of spool back is connected with axis with spool at the valve shaft on same straight line, and the axis that axis and tubular valve body are arranged in the valve body is at the resistance cylinders on same straight line; Resistance cylinders and valve interior wall are connected with gusset; The front end of resistance cylinders inner chamber have with valve body in the side direction pipe that communicates, have in the side direction pipe to be communicated with the interior front side of inner chamber of cylinder block and valve body to throttle valve, the handle of side direction throttle valve is outside valve body; The front end of resistance cylinders has cylinder cap; There is the valve shaft hole at the center of cylinder cap, and there is into outage the rear end of resistance cylinders, and the resistance cylinders inner chamber has little, the different forward and backward two sections inner chamber of cylinder block of internal diameter; Inner chamber of cylinder block has the damped cylinder plug that matches with clearance fit relationship with the leading portion inner chamber of cylinder block; The other end of valve shaft links to each other with the damped cylinder plug through the valve shaft hole, between valve shaft and the valve shaft hole seal ring is arranged, damped cylinder have beyond the Great Wall from after the one-way valve of the flow direction forward; It is characterized in that: the front end of back segment inner chamber of cylinder block have with valve body in the side direction pipe that communicates, have in the side direction pipe to be communicated with the interior rear side of inner chamber of cylinder block and valve body to throttle valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203543213U CN202252178U (en) | 2011-09-21 | 2011-09-21 | Adjustable two-section damping axial flow type check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203543213U CN202252178U (en) | 2011-09-21 | 2011-09-21 | Adjustable two-section damping axial flow type check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202252178U true CN202252178U (en) | 2012-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203543213U Expired - Fee Related CN202252178U (en) | 2011-09-21 | 2011-09-21 | Adjustable two-section damping axial flow type check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202252178U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103133729A (en) * | 2013-01-31 | 2013-06-05 | 武汉大禹阀门股份有限公司 | Diversion damper slowly-closed check valve |
| CN103836237A (en) * | 2012-11-23 | 2014-06-04 | 凯泰阀门(集团)有限公司 | Shuttle-shaped adjustable check valve |
| CN103836254A (en) * | 2013-11-21 | 2014-06-04 | 周明泉 | Zero-water-damage noise-free self-control water pump control valve |
| CN104197050A (en) * | 2014-09-02 | 2014-12-10 | 章华 | Low flow resistance axial-flow type check valve with closing tail section with slow closing protection function |
| CN106197969A (en) * | 2016-06-29 | 2016-12-07 | 上海阀门厂股份有限公司 | A kind of axial flow type check valve closes valve test system |
| CN106286911A (en) * | 2016-08-29 | 2017-01-04 | 苏州纽威阀门股份有限公司 | A kind of axial flow type check valve |
-
2011
- 2011-09-21 CN CN2011203543213U patent/CN202252178U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836237A (en) * | 2012-11-23 | 2014-06-04 | 凯泰阀门(集团)有限公司 | Shuttle-shaped adjustable check valve |
| CN103133729A (en) * | 2013-01-31 | 2013-06-05 | 武汉大禹阀门股份有限公司 | Diversion damper slowly-closed check valve |
| CN103836254A (en) * | 2013-11-21 | 2014-06-04 | 周明泉 | Zero-water-damage noise-free self-control water pump control valve |
| CN103836254B (en) * | 2013-11-21 | 2016-09-28 | 周明泉 | A kind of noiselessness automatic controlled water pump control valve |
| CN104197050A (en) * | 2014-09-02 | 2014-12-10 | 章华 | Low flow resistance axial-flow type check valve with closing tail section with slow closing protection function |
| CN104197050B (en) * | 2014-09-02 | 2016-09-14 | 章华 | Close the low flow resistance axial flow type check valve of latter end band Slow Close defencive function |
| CN106197969A (en) * | 2016-06-29 | 2016-12-07 | 上海阀门厂股份有限公司 | A kind of axial flow type check valve closes valve test system |
| CN106197969B (en) * | 2016-06-29 | 2018-10-30 | 上海阀门厂股份有限公司 | A kind of axial flow type check valve pass valve test system |
| CN106286911A (en) * | 2016-08-29 | 2017-01-04 | 苏州纽威阀门股份有限公司 | A kind of axial flow type check 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: 20120530 Termination date: 20150921 |
|
| EXPY | Termination of patent right or utility model |