CN202220898U - Hydraulic buffer device for valve - Google Patents
Hydraulic buffer device for valve Download PDFInfo
- Publication number
- CN202220898U CN202220898U CN2011202794017U CN201120279401U CN202220898U CN 202220898 U CN202220898 U CN 202220898U CN 2011202794017 U CN2011202794017 U CN 2011202794017U CN 201120279401 U CN201120279401 U CN 201120279401U CN 202220898 U CN202220898 U CN 202220898U
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- CN
- China
- Prior art keywords
- cylinder body
- piston
- piston rod
- valve
- chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 210000004907 gland Anatomy 0.000 claims abstract description 22
- 238000013016 damping Methods 0.000 claims abstract description 15
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 10
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 2
- 239000011148 porous material Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 8
- 235000019589 hardness Nutrition 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
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- Fluid-Damping Devices (AREA)
Abstract
A hydraulic damping device for a valve. The problem of current pneumatic control valve impact force when using is big, easily causes valve or cylinder to damage has mainly been solved. The method is characterized in that: one end of a piston rod (21) penetrates through the bottom cover (3) and the end of the piston rod extends out, the other end of the piston rod (21) penetrates through the bottom of the cylinder body (1) and the end of the piston rod is arranged in the end cover (4), a piston (22) is positioned in the closed cylinder body (1), the piston (22) divides the inner cavity of the cylinder body (1) into two chambers, the two chambers are communicated through a pore channel in the side wall of the cylinder body (1), and the inner cavity of the cylinder body (1) is filled with hydraulic oil; a positioning gland (5) is arranged in the end cover (4), and a spring (6) is arranged between the positioning gland (5) and the piston rod (21). The hydraulic buffer device for the valve effectively slows down the impact force on the valve seat when the valve reaches the terminal position, avoids the damage to the parts of the cylinder, and has the characteristics of compact structure, safety and reliability.
Description
Technical field
The utility model relates to a kind of damping device, is specifically related to a kind of hydraulic damping device that is used for valve.
Background technique
At present, pneumatic control valve is a kind of valve of using always, and existing pneumatic control valve mainly is made up of valve, cylinder and solenoid valve, and the switching-over through solenoid valve realizes the bidirectional-movement of cylinder, by the opening and closing of cylinder control valve door.There is following defective in this pneumatic control valve: because the impact force of cylinder is bigger; When valve closing incoming terminal position; Valve seat in the valve can receive very big impact force; The suffered impact force of valve rod reacts on cylinder piston rod simultaneously, is prone to cause the damage of valve or cylinder, shortens the working life of valve.
The model utility content
Impact force is big in use in order to solve existing pneumatic control valve; Be prone to cause the problem of valve or cylinder damage; The utility model provides a kind of hydraulic damping device that is used for valve; To the impact force of valve seat, also avoided parts damages simultaneously when this hydraulic damping device that is used for valve has slowed down valve incoming terminal position effectively, had compact structure and safe and reliable characteristics cylinder.
The technological scheme of the utility model is: this hydraulic damping device that is used for valve comprises cylinder body, piston assembly, bottom and end cap; Bottom and end cap are connected to the two ends of cylinder body; Piston assembly includes piston rod and piston, and an end of piston rod passes bottom and stretch out the termination, and bottom and termination that the other end of piston rod passes cylinder body place in the end cap; Piston is positioned at airtight cylinder body; Piston is divided into two chambers with the inner chamber of cylinder body, and described two chambers communicate through the duct in the cylinder side wall, are full of hydraulic oil in the inner chamber of cylinder body; Be provided with the location gland in the end cap, be provided with spring between location gland and the piston rod.
The inner chamber of described cylinder body is divided into chamber, big footpath and path chamber; The path chamber is in a side of cylinder base; Piston has the space with the sidewall in chamber, big footpath; Piston and the motive sealing of path chamber are provided with Flow-rate adjustment duct and one-way resetting duct that chamber, big footpath and path chamber are communicated in the sidewall of cylinder body, be separately installed with flow control valve and one-way valve in Flow-rate adjustment duct and the one-way resetting duct.
Be fixed with screw mandrel on the gland of described location, screw mandrel and end cap screw-thread fit, rotary screw can make the displacement vertically of location gland.
Described screw mandrel is provided with locking nut.
Be fixed with the spring setting sleeve on the gland of described location, be connected with on the described piston rod and split annulus, an end of spring is enclosed within on the piston rod and is spacing by splitting annulus, and the other end of spring is enclosed within on the limited post on the gland of location.
Be equipped with through hole on described bottom and the cylinder body, in described two the through hole concentrics, two through holes all built-up welding copper alloy layer is arranged, part pile-up welding hard alloy layer contacts with the position of copper alloy layer on the piston rod.
" O " RunddichtringO and " Y " RunddichtringO all are installed in described two through holes.
The utlity model has following beneficial effect: owing to take such scheme, in use, this device is installed in the bottom of cylinder; The piston rod of bottom outside is corresponding with the piston in the cylinder, and when throttle down, the piston slap in the cylinder is to the outside piston rod of bottom; Spring is compressed; Hydraulic oil in the interior chamber of cylinder body flows into another chamber through the duct in the cylinder side wall, forms the buffer piston effect, after the external force disappearance; Piston assembly resets under the effect of spring; To the impact force of valve seat, also avoided the parts damages in the cylinder simultaneously when this device has slowed down valve incoming terminal position effectively, had compact structure and safe and reliable characteristics.
Description of drawings
Accompanying drawing 1 is the structural representation of the utility model.
Accompanying drawing 2 is the A-A structure sectional views among Fig. 1.
1-cylinder body among the figure, the 2-piston assembly, the 3-bottom, the 4-end cap, 5-locatees gland, 51-limited post; The 6-spring, chamber, the big footpath of 7-, 8-path chamber, 9-Flow-rate adjustment duct, 10-one-way resetting duct, 11-flow control valve; The 12-one-way valve, the 13-screw mandrel, the 14-locking nut, 15-spring setting sleeve, 16-splits annulus, the 17-copper alloy layer; The 18-hard alloy layer, 19-" O " RunddichtringO, 20-" Y " RunddichtringO, 21-piston rod, 22-piston.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further:
Combine shown in Figure 2 by Fig. 1; This hydraulic damping device that is used for valve comprises cylinder body 1, piston assembly 2, bottom 3 and end cap 4, and bottom 3 and end cap 4 are connected to the two ends of cylinder body 1, and piston assembly 2 includes piston rod 21 and piston 22; One end of piston rod 21 passes bottom 3 and stretch out the termination; Bottom and termination that the other end of piston rod 21 passes cylinder body 1 place in the end cap 4, and piston 22 is positioned at airtight cylinder body 1, and piston 22 is divided into two chambers with the inner chamber of cylinder body 1; Described two chambers communicate through the duct in cylinder body 1 sidewall, are full of hydraulic oil in the inner chamber of cylinder body 1; Be provided with location gland 5 in the end cap 4, be provided with spring 6 between location gland 5 and the piston rod 21.In use, this device is installed in the bottom of cylinder, and the piston rod 21 of bottom 3 outsides is corresponding with the piston in the cylinder; When throttle down, the piston slap in the cylinder is to the piston rod 21 of bottom 3 outsides, and spring 6 is compressed; Hydraulic oil in the cylinder body 1 interior chamber (path chamber 8) flows into another chamber (chamber 7, big footpath) through the duct in cylinder body 1 sidewall, forms the buffer piston effect, after external force disappears; Piston assembly 2 resets under the effect of spring 6; To the impact force of valve seat, also avoided the parts damages in the cylinder simultaneously when this device has slowed down valve incoming terminal position effectively, had compact structure and safe and reliable characteristics.
Combine shown in Figure 2 by Fig. 1; The inner chamber of cylinder body 1 is divided into chamber, big footpath 7 and path chamber 8; Path chamber 8 is in a side of cylinder body 1 bottom, and piston 22 has the space, piston 22 and 8 motive sealings of path chamber with the sidewall in chamber 7, big footpath; Be provided with Flow-rate adjustment duct 9 and one-way resetting duct 10 that chamber, big footpath 7 and path chamber 8 are communicated in the sidewall of cylinder body 1, be separately installed with flow control valve 11 and one-way valve 12 in Flow-rate adjustment duct 9 and the one-way resetting duct 10.When piston rod 21 receives external force effect campaign; Piston 22 gets into path chamber 8, forms the buffer piston effect, and the hydraulic oil in the path chamber 8 gets in the chamber 7, big footpath from Flow-rate adjustment duct 9; Can adjust the flow size through regulating flow control valve 11; And then adjust buffer time, at this moment, the one-way valves 12 in the one-way resetting duct 10 are closed.After external force disappears, at the effect lower piston 22 of spring 6 to 7 motions of chamber, big footpath, at this moment; One-way valve 12 in the one-way resetting duct 10 is opened; Hydraulic oil refluxes fast, and when piston 22 broke away from path chamber 8 fully, chamber 7, big footpath directly communicated through the space of piston 22 with chamber, big footpath 7 sidewalls with path chamber 8 interior hydraulic oil; Pressure balance, piston 22 resets fast.
By shown in Figure 1, be fixed with screw mandrel 13 on the gland 5 of location, screw mandrel 13 and end cap 4 screw-thread fit, rotary screw 13 can make the displacement vertically of location gland 5.Can regulate the position at dead point, the i.e. stroke of regulating piston assembly 2 through screw mandrel 13.Piston rod 21 will increase with the degree of overlapping in path chamber 8 thereupon this moment, can realize the control to buffer time through the back-flow velocity of flow control valve 11 adjustment hydraulic oil.
By shown in Figure 1, screw mandrel 13 is provided with locking nut 14.After set up the position of location gland 5, by locking nut 14 lockings.
By shown in Figure 1, the location is fixed with spring setting sleeve 15 on the gland 5, is connected with on the described piston rod 21 and splits annulus 16, and an end of spring 6 is enclosed within on the piston rod 21 and is spacing by splitting annulus 16, and the other end of spring 6 is enclosed within on the limited post 51 on the gland 5 of location.Compact structure is convenient to install.
By shown in Figure 1, be equipped with through hole on bottom 3 and the cylinder body 1, in described two the through hole concentrics, two through holes all built-up welding copper alloy layer 17 is arranged, part pile-up welding hard alloy layer 18 contacts with the position of copper alloy layer 17 on the piston rod 21.Make the frictional contact surface of piston rod 21 form bigger difference of hardness, improved piston rod 21 surface hardnesses and wear-resisting property, guaranteed working life.
By shown in Figure 1, " O " RunddichtringO 19 and " Y " RunddichtringO 20 are installed all in described two through holes.Form double-layer seal, good sealing effect.
Claims (7)
1. hydraulic damping device that is used for valve; Comprise cylinder body (1), piston assembly (2), bottom (3) and end cap (4), bottom (3) and end cap (4) are connected to the two ends of cylinder body (1), and piston assembly (2) includes piston rod (21) and piston (22); It is characterized in that: an end of piston rod (21) passes bottom (3) and stretch out the termination; Bottom and termination that the other end of piston rod (21) passes cylinder body (1) place in the end cap (4), and piston (22) is positioned at airtight cylinder body (1), and piston (22) is divided into two chambers with the inner chamber of cylinder body (1); Described two chambers communicate through the duct in cylinder body (1) sidewall, are full of hydraulic oil in the inner chamber of cylinder body (1); Be provided with location gland (5) in the end cap (4), be provided with spring (6) between location gland (5) and the piston rod (21).
2. the hydraulic damping device that is used for valve according to claim 1; It is characterized in that: the inner chamber of cylinder body (1) is divided into chamber, big footpath (7) and path chamber (8); Path chamber (8) is in a side of cylinder body (1) bottom; Piston (22) has the space with the sidewall in big chamber, footpath (7); Piston (22) and path chamber (8) motive sealing, cylinder body (1) sidewall in be provided with Flow-rate adjustment duct (9) and one-way resetting duct (10) that chamber, big footpath (7) and path chamber (8) are communicated, be separately installed with flow control valve (11) and one-way valve (12) in Flow-rate adjustment duct (9) and one-way resetting duct (10).
3. the hydraulic damping device that is used for valve according to claim 1 and 2 is characterized in that: be fixed with screw mandrel (13) on the location gland (5), screw mandrel (13) and end cap (4) screw-thread fit, rotary screw (13) can make the displacement vertically of location gland (5).
4. the hydraulic damping device that is used for valve according to claim 3 is characterized in that: screw mandrel (13) is provided with locking nut (14).
5. the hydraulic damping device that is used for valve according to claim 3; It is characterized in that: be fixed with spring setting sleeve (15) on the location gland (5); Be connected with on the described piston rod (21) and split annulus (16); It is last and spacing by splitting annulus (16) that one end of spring (6) is enclosed within piston rod (21), and the other end of spring (6) is enclosed within on the limited post (51) on the location gland (5).
6. the hydraulic damping device that is used for valve according to claim 1 and 2; It is characterized in that: be equipped with through hole on bottom (3) and the cylinder body (1); Described two through hole concentrics; Equal built-up welding have copper alloy layer (17) in two through holes, the last part pile-up welding hard alloy layer (18) that contacts with the position of copper alloy layer (17) of piston rod (21).
7. the hydraulic damping device that is used for valve according to claim 6 is characterized in that: " O " RunddichtringO (19) and " Y " RunddichtringO (20) all are installed in described two through holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202794017U CN202220898U (en) | 2011-08-03 | 2011-08-03 | Hydraulic buffer device for valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202794017U CN202220898U (en) | 2011-08-03 | 2011-08-03 | Hydraulic buffer device for valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202220898U true CN202220898U (en) | 2012-05-16 |
Family
ID=46042925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202794017U Expired - Lifetime CN202220898U (en) | 2011-08-03 | 2011-08-03 | Hydraulic buffer device for valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202220898U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305309A (en) * | 2011-08-03 | 2012-01-04 | 浙江石化阀门有限公司 | Hydraulic damping device for valve |
| CN106466931A (en) * | 2015-08-21 | 2017-03-01 | 比亚迪股份有限公司 | Hot press |
| CN112483622A (en) * | 2020-10-28 | 2021-03-12 | 广东创智智能装备有限公司 | Pneumatic bidirectional linkage device |
-
2011
- 2011-08-03 CN CN2011202794017U patent/CN202220898U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305309A (en) * | 2011-08-03 | 2012-01-04 | 浙江石化阀门有限公司 | Hydraulic damping device for valve |
| CN102305309B (en) * | 2011-08-03 | 2012-10-10 | 浙江石化阀门有限公司 | Hydraulic damping device for valve |
| CN106466931A (en) * | 2015-08-21 | 2017-03-01 | 比亚迪股份有限公司 | Hot press |
| CN106466931B (en) * | 2015-08-21 | 2019-11-05 | 比亚迪股份有限公司 | Hot Press |
| CN112483622A (en) * | 2020-10-28 | 2021-03-12 | 广东创智智能装备有限公司 | Pneumatic bidirectional linkage device |
| CN112483622B (en) * | 2020-10-28 | 2023-12-19 | 广东创智智能装备有限公司 | Pneumatic type two-way linkage device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120516 Effective date of abandoning: 20130306 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20120516 Effective date of abandoning: 20130306 |
|
| RGAV | Abandon patent right to avoid regrant |