CN205479527U - Check valve with adjustable damping buffering - Google Patents
Check valve with adjustable damping buffering Download PDFInfo
- Publication number
- CN205479527U CN205479527U CN201620107264.1U CN201620107264U CN205479527U CN 205479527 U CN205479527 U CN 205479527U CN 201620107264 U CN201620107264 U CN 201620107264U CN 205479527 U CN205479527 U CN 205479527U
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- CN
- China
- Prior art keywords
- damping
- valve
- cavity
- fluid drain
- check valve
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- Expired - Fee Related
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- Fluid-Damping Devices (AREA)
Abstract
The utility model provides a check valve with adjustable damping buffering, including disk seat, last valve gap, lower valve gap, case, it is located the disk seat up end to go up the valve gap, be equipped with the valve pocket in the disk seat, be equipped with the case in the valve pocket, down the valve gap lies in terminal surface under the disk seat, the valve gap is equipped with the boss down, be equipped with the damping chamber in the boss, the valve gap is equipped with the flowing back way down, be equipped with the damping needle in the oil duct, the damping chamber communicates with each other with the flowing back way, the case is equipped with the damping head, piston motion can be at the damping intracavity to the damping head when case removed, emited into the flowing back way with inside liquid, realized different flowing back flows through adjusting the damping needle, reached buffering effect, compared with traditional check valve, reduced the case to the impact of disk seat, and noise at work is low, long service life, and the reaction is sensitive, work safe and reliable, but to close the flowing back at specified occasion rotational damping needle and say that to make the damping chamber sealed, the case can't reset, and the check valve is open state to get rid of the interior liquid of pipeline.
Description
Technical field
This utility model relates to a kind of check valve, is specifically related to a kind of adjustable check valve of damping buffering.
Background technology
Check valve is also known as check-valves or non-return valve, liquid stream reverse flow is prevented in hydraulic system, or in pneumatic system, prevent compressed air reverse flow, therefore power station it is widely used in, oil, chemical industry, pharmacy, the industries such as food, when non-return valve operational, if front and back pressure medium is in the state close to balance and mutually " dragsaw ", may result in spool and present vibrations shape and ceaselessly switch shock valve seat, the spool that some fragile material (such as cast iron, pyrite etc.) is made is the most broken.
In order to solve the problems referred to above, it is thought that use toughness material to make spool, although this solves the difficult point that spool is frangible, but still could not solve the life problems of spool, closed check valve flow cross section unlike conventional valves has been gradually reduced a buffering, at one-way valve inlet, pressure is as suddenly less than exit, or outlet pressure is abruptly above porch, spool can be made to close within the extremely short time, and exit is if any load when closing, the pressure of load can act directly on and quickly promote spool to clash into valve seat on spool, go down to deform to cause seal failure to produce pressure release for a long time, the characteristic of check valve is when entrance side no pressure effect to present normally off simultaneously, therefore the occasion of liquid in needing purging line, discharge opeing can be caused obstruction by the check valve under normally off.
Utility model content
Based on the problems referred to above, this utility model purpose is to provide a kind of working stability, and the spool life-span is long, closes without impact, opens rapidly, and closing velocity is adjustable, and check valve can be arranged to the adjustable check valve of damping buffering of normally open.
nullFor problem above，Provide following technical scheme: a kind of adjustable check valve of damping buffering，Including valve seat、Bonnet,、Bottom flange、Spool，Described bonnet, is fixed on valve seat upper surface by upper bonnet bolt，It is provided with valve pocket in described valve seat，It is provided with spool in described valve pocket，Described valve seat left side is provided with import，Being provided with in described import is tilted down extends to the entrance driveway of valve pocket，Described valve seat right side is provided with outlet，The inclined exit ramp extending upwardly to valve pocket it is provided with in described outlet，Described bottom flange is fixed on valve seat lower surface by bolt of lower cover，Described bottom flange is provided with boss，Described boss is provided with damping cavity，Described bottom flange is provided with fluid drain，Damping pin it is provided with in described fluid drain，Described damping cavity is communicated with entrance driveway by fluid drain，Described fluid drain is provided with closing in，Described spool is provided with damping head，Described damping head is that piston seal coordinates with damping cavity，When spool is closed，Damping head entrance damping cavity forces the liquid in damping cavity to enter entrance driveway through fluid drain，Gap length by regulation fluid drain internal damping pin with closing in，Thus realize different oil extraction flows，Reach different dampings.
This utility model is further arranged to, and described valve pocket includes that valve cover cavity, described valve cover cavity are positioned at seat bottom portion, and described valve cover cavity is for accommodating the boss on bottom flange.
This utility model is further arranged to, and described damping cavity is arranged at the center of boss upper surface, and described damping cavity is used for accommodating damping head.
This utility model is further arranged to, and is provided with damper rod below described spool, and described damper rod end is provided with damping head, and described damping head end is provided with seal groove, is provided with sealing ring in order to increase the sealing between damping head and damping cavity in described seal groove.
This utility model is further arranged to, and described fluid drain top is provided with closing in, and described closing in is positioned at boss upper surface, and described closing in communicates with entrance driveway, and described fluid drain bottom is provided with screw thread, and described screw thread is used for being screwed into damping pin.
This utility model is further arranged to, described damping Aculeata is provided with the regulation screw thread matched with fluid drain lower thread, it is provided with needle tray in the middle part of described damping pin, described needle tray is provided with sealing ring, described sealing ring coordinates realization to seal with fluid drain, described damping needle section is provided with needle point, described damping pin regulates the gap of needle point and closing in by rotation, thus realize regulating the effect of flow, reach different dampings, when damping due to rotation pin makes needle point thoroughly block closing in, damping cavity is sealing state, according to the incompressible characteristic of liquid, damping head cannot go deep into damping cavity, the purpose normally opened to realize check valve.
The beneficial effects of the utility model, contrast existing check valve, this utility model increases damping head at spool, damp head when valve core movement and insert damping cavity, the liquid of damping cavity is squeezed, oil duct is discharged and is realized damping action, different oil extraction flows is realized by regulation spindle position in perpendicular oil duct, realize different buffering effects, spool impact to valve seat is greatly reduced, operating noise is low, service life is long, it is quick on the draw, safe and reliable, when specific occasion needs residual liquid in purging line, under check valve open mode, rotate spindle close oil duct, spool is made to reset, check valve is normally open, thus liquid in purging line.
Accompanying drawing explanation
Fig. 1 is open mode structural representation of the present utility model；
Fig. 2 is closed mode structural representation of the present utility model；
Fig. 3 is working state structure schematic diagram of the present utility model；
Fig. 4 is valve seat construction schematic diagram of the present utility model；
Fig. 5 is bottom flange of the present utility model and valve core structure schematic diagram；
Fig. 6 is damping needle construction schematic diagram of the present utility model；
Fig. 7 is damping header structure schematic diagram of the present utility model；
Fig. 8 is the A portion enlarged drawing of this utility model Fig. 1；
Fig. 9 is the B portion enlarged drawing of this utility model Fig. 2.
Label implication in figure: 10-valve seat；100-valve pocket；104-valve cover cavity；11-import；110-entrance driveway；12-exports；120-exit ramp；20-bonnet,；The upper bonnet bolt of 21-；30-bottom flange；31-bolt of lower cover；32-boss；33-damping cavity；34-fluid drain；381 close up；382-screw thread；39-damps pin；391-regulates screw thread；392-needle tray；393-sealing ring；394-needle point；40-spool；45-damper rod, 46-damp head；47-seal groove；48-sealing ring.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, detailed description of the invention of the present utility model is described in further detail.Following example are used for illustrating this utility model, but are not limited to scope of the present utility model.
nullReferring to figs. 1 to Fig. 9，The adjustable check valve of a kind of damping buffering as shown in Figures 1 to 5，Including valve seat 10、Bonnet, 20、Bottom flange 30、Spool 40、Spring 50，Described bonnet, 20 is fixed on valve seat 10 upper surface by upper bonnet bolt 21，It is provided with valve pocket 100 in described valve seat 10，It is provided with spool 40 in described valve pocket 100，Described valve seat 10 left side is provided with import 11，Being provided with in described import 11 is tilted down extends to the entrance driveway 110 of valve pocket，Described valve seat 10 right side is provided with outlet 12，The inclined exit ramp 120 extending upwardly to valve pocket 100 it is provided with in described outlet 12，Described bottom flange 30 is fixed on valve seat 10 lower surface by bolt of lower cover 31，Described bottom flange 30 is provided with boss 32，Described boss 32 is provided with damping cavity 33，Described bottom flange 30 is provided with fluid drain 34，Damping pin 39 it is provided with in described fluid drain 34，Described damping cavity 33 is communicated with entrance driveway 110 by fluid drain 34，Described fluid drain 34 is provided with closing in 381，Described spool 40 is provided with damping 46，Described damping 46 coordinates in piston seal with damping cavity 33，When spool 40 is closed，Damping 46 entrance damping cavity 33 forces the liquid in damping cavity 33 to enter entrance driveway 110 through fluid drain 34，Gap length by regulation fluid drain 34 internal damping pin 39 with closing in 381，Thus realize different oil extraction flows，Reach different dampings.
As shown in Figure 1, Figure 4, Figure 5, described valve pocket 100 includes that valve cover cavity 104, described valve cover cavity 104 are positioned at bottom valve seat 10, and described valve cover cavity 104 is for accommodating the boss 32 on bottom flange 30.
As shown in Figure 5, Figure 7, described damping cavity 33 is arranged at the center of boss 32 upper surface, and described damping cavity 33 is used for accommodating damping 46.
As it is shown in figure 5, be provided with damper rod 45 below described spool 40, described damper rod 45 end is provided with damping 46, and 46 ends of described damping are provided with seal groove 47, is provided with sealing ring 48 in order to increase the damping sealing between 46 and damping cavity 33 in described seal groove 47.
As shown in Figure 5, Figure 9, described fluid drain 34 top is provided with closing in 381, and described closing in 381 is positioned at boss 32 upper surface, and described closing in 381 communicates with entrance driveway 110, and described fluid drain 34 bottom is provided with screw thread 382, and described screw thread 382 is screwed into damping pin 39.
Such as Fig. 5, shown in Fig. 6, described damping pin 39 afterbody is provided with the regulation screw thread 391 matched with fluid drain 34 lower thread 382, it is provided with needle tray 392 in the middle part of described damping pin 39, described needle tray 392 is provided with sealing ring 393, described sealing ring 393 coordinates realization to seal with fluid drain 34, described damping pin 39 head is provided with needle point 394, described damping pin 39 is by rotating the gap of regulation needle point 394 and closing in 381, thus realize regulating the effect of flow, reach different dampings, when damping due to rotation pin 39 makes needle point 394 thoroughly block closing in 381, damping cavity 33 is in sealing state, according to the incompressible characteristic of liquid, damping 46 cannot go deep into damping cavity 33, the purpose normally opened to realize check valve.
Operation principle of the present utility model, as shown in Fig. 1, Fig. 4, Fig. 8, when valve working, back-out downwards and damp pin 39, making to produce between the needle point 394 of damping pin 39 and the closing in 381 of bottom flange 30 certain interval, when entrance driveway 110 pressure is more than exit ramp 120, spool 40 is by pressure upwards jack-up, valve is opened, and the sub-fraction liquid of entrance driveway 110 enters damping cavity 33 by fluid drain 34 therewith.
As shown in Fig. 2, Fig. 4, Fig. 9, when entrance driveway 110 pressure is less than exit ramp 120, when spool 40 moves downward closedown, damping 46 on spool 40 is inserted into damping cavity 33, liquid in damping cavity 33 flows back to entrance driveway 110 by fluid drain 34, and liquid, through the gap between 381 and needle point 394 of closing up, produces resistance, thus reaching the purpose of buffering, different buffering effects can realize according to the gap length between the needle point 394 of damping adjusting pin 39 and the closing in 381 of fluid drain 34.
As shown in Figure 3, when liquid or other purposes in pipeline needs maintenance emptying pipeline, can be when valve working, damping pin 39 is tightened forward, needle point 394 is made to shut closing in 381 completely, now damping cavity 33 presents sealing state, according to the incompressible fixed characteristic of liquid, make damping 46 cannot go deep into damping cavity 33, thus support spool 40 all the time, avoid spool 40 to reset and cause closed check valve, after pipe-line maintenance completes, damping pin 39 is unclamped backward, needle point 394 is made to depart from closing in 381 and produce gap, damping cavity 33 communicates with entrance driveway 110, liquid in damping cavity 33 is discharged by damping 46 smoothly, spool 40 can be closed.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; on the premise of without departing from this utility model know-why; can also make some improvement and modification, these improvement of above-mentioned hypothesis and modification also should be regarded as protection domain of the present utility model.
Claims (6)
1. the adjustable check valve of damping buffering, including valve seat, bonnet, bottom flange, spool, described bonnet, is by upper
Bonnet bolt is fixed on valve seat upper surface, is provided with valve pocket, is provided with spool, it is characterised in that described in described valve pocket in described valve seat
Valve seat left side is provided with import, and being provided with in described import is tilted down extends to the entrance driveway of valve pocket, and described valve seat right side sets
Having outlet, be provided with the inclined exit ramp extending upwardly to valve pocket in described outlet, described bottom flange is fixed on by bolt of lower cover
Valve seat lower surface, described bottom flange is provided with boss, and described boss is provided with damping cavity, and described bottom flange is provided with fluid drain, described row
Being provided with damping pin in fluid passage, described damping cavity is communicated with entrance driveway by fluid drain, and described fluid drain is provided with closing in, described spool
Being provided with damping head, described damping head is that piston seal coordinates with damping cavity, and when spool is closed, damping head enters damping cavity and forces
Liquid in damping cavity enters entrance driveway through fluid drain, by the gap length of regulation fluid drain internal damping pin with closing in, thus real
Existing different oil extraction flow, reaches different dampings.
A kind of adjustable check valve of damping buffering the most according to claim 1, it is characterised in that: described valve pocket also includes valve
Lid chamber, described valve cover cavity is positioned at seat bottom portion, and described valve cover cavity is for accommodating the boss on bottom flange.
A kind of adjustable check valve of damping buffering the most according to claim 1, it is characterised in that: described damping cavity is arranged at
The center of boss upper surface, described damping cavity is used for accommodating damping head.
A kind of adjustable check valve of damping buffering the most according to claim 3, it is characterised in that: it is provided with below described spool
Damper rod, described damper rod end is provided with damping head, and described damping head end is provided with seal groove, is provided with sealing in described seal groove
Enclose in order to increase the sealing between damping head and damping cavity.
A kind of adjustable check valve of damping buffering the most according to claim 1, it is characterised in that: described fluid drain top sets
Having closing in, described closing in be positioned at boss upper surface, described closing in communicates with entrance driveway, and described fluid drain bottom is provided with screw thread, institute
State screw thread for being screwed into damping pin.
A kind of adjustable check valve of damping buffering the most according to claim 1, it is characterised in that: described damping Aculeata sets
Having the regulation screw thread matched with fluid drain lower thread, be provided with needle tray in the middle part of described damping pin, described needle tray is provided with sealing ring,
Described sealing ring coordinates realization to seal with fluid drain, and described damping needle section is provided with needle point, and described damping pin is regulated by rotation
Needle point and the gap of closing in, thus realize regulating the effect of flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620107264.1U CN205479527U (en) | 2016-01-29 | 2016-01-29 | Check valve with adjustable damping buffering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620107264.1U CN205479527U (en) | 2016-01-29 | 2016-01-29 | Check valve with adjustable damping buffering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205479527U true CN205479527U (en) | 2016-08-17 |
Family
ID=56673507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620107264.1U Expired - Fee Related CN205479527U (en) | 2016-01-29 | 2016-01-29 | Check valve with adjustable damping buffering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205479527U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559463A (en) * | 2017-10-20 | 2018-01-09 | 新乡市华航航空液压设备有限公司 | A kind of low flow resistance check valve with damping structure |
| CN110821907A (en) * | 2019-11-05 | 2020-02-21 | 北京特种机械研究所 | Mechanical throttling speed regulating valve with adjustable damping hole |
| CN112797211A (en) * | 2021-01-20 | 2021-05-14 | 贵州航天朝阳科技有限责任公司 | Discharging method, discharging control valve and application thereof |
-
2016
- 2016-01-29 CN CN201620107264.1U patent/CN205479527U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559463A (en) * | 2017-10-20 | 2018-01-09 | 新乡市华航航空液压设备有限公司 | A kind of low flow resistance check valve with damping structure |
| CN110821907A (en) * | 2019-11-05 | 2020-02-21 | 北京特种机械研究所 | Mechanical throttling speed regulating valve with adjustable damping hole |
| CN110821907B (en) * | 2019-11-05 | 2021-08-27 | 北京特种机械研究所 | Mechanical throttling speed regulating valve with adjustable damping hole |
| CN112797211A (en) * | 2021-01-20 | 2021-05-14 | 贵州航天朝阳科技有限责任公司 | Discharging method, discharging control valve and application thereof |
| CN112797211B (en) * | 2021-01-20 | 2022-06-03 | 贵州航天朝阳科技有限责任公司 | Discharging method, discharging control valve and application thereof |
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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: 20160817 Termination date: 20170129 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |