CN201764030U - Check valve with hydraulic cylinder damping - Google Patents
Check valve with hydraulic cylinder damping Download PDFInfo
- Publication number
- CN201764030U CN201764030U CN2010205476469U CN201020547646U CN201764030U CN 201764030 U CN201764030 U CN 201764030U CN 2010205476469 U CN2010205476469 U CN 2010205476469U CN 201020547646 U CN201020547646 U CN 201020547646U CN 201764030 U CN201764030 U CN 201764030U
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- CN
- China
- Prior art keywords
- hydraulic cylinder
- valve body
- bearing pin
- flap
- packing
- 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 - Fee Related
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- Fluid-Damping Devices (AREA)
Abstract
The utility model discloses a check valve with hydraulic cylinder damping, comprising a valve body, a valve cover, a rocking bar, and a valve flap disposed at the lower end of the rocking bar. The utility model is characterized in that a sealing valve seat which is corresponding to and matched with the valve flap is arranged in the valve body; a hanger is disposed in the valve body; the upper end of the rocking bar is linked to a pin and can be rotatingly arranged on the hanger; the check valve also comprises a hydraulic cylinder which consists of a piston rod; the outer end of the pin is linked to an oscillating bar; the tail end of the oscillating bar is provided with a weight stack; the head end of the hydraulic cylinder piston rod is hinged to the middle section of the oscillating bar. The utility model is advantageous in that the effective cushioning of the on-off of the valve flap can be achieved; the service life is prolonged.
Description
Technical field
The utility model relates to a kind of safety check, specifically is meant a kind of safety check with oil hydraulic cylinder damping Slow Close.
Background technique
Existing safety check is used for pipe-line system, and the power of the mobile generation of tube road medium itself realizes opening and closing automatically, and belongs to a kind of automatic valve.Present known safety check mainly is made up of valve body, valve gap, flap, rocking bar, when its working principle is following current, fluid enters valve from the import of safety check, fluid is subjected to the stopping of flap of the bottom, flow rate of fluid reduces, the part dynamic pressure changes into hydrostatic pressure on flap, and the flap rotation is upwardly opened; During adverse current, fluid passes back into valve from the outlet of safety check, and the hydrostatic pressure of fluid closes the flap bottom on the flap of opening, and flap stops fluid reflux.
But because the moment that safety check is opening and closing, because medium is a directional flow, open and close along with flap, medium reduces to zero from the refluence speed of maximum, and pressure raises rapidly, and generation may have " water hammer " phenomenon of destruction to pipe-line system, to the damage that impacts of each parts in the valve body, influence the working life of safety check, even cause the pipeline security incident.
Summary of the invention
The purpose of this utility model is in order to overcome the shortcoming and defect that prior art exists, and provide a kind of flap to open and close effectively to be cushioned, band oil hydraulic cylinder damping safety check that using effect is good.
For achieving the above object, the technical solution of the utility model is, include valve body, valve gap, rocking bar and the flap that is installed on the rocking bar lower end, be provided with corresponding adaptive seal valve seat in the described valve body with flap, be provided with in the described valve body and hang, the upper end of described rocking bar also is rotatably installed on the bearing pin interlock and hangs, also include oil hydraulic cylinder, this oil hydraulic cylinder includes piston rod, also be linkedly set with fork on the outer end of described bearing pin, the tail end of described fork is provided with balancing weight, the hinged fork middle section position that is arranged at of described hydraulic cylinder piston rod head end.
Further being provided with is that described valve body is provided with the pin sleeve adaptive with bearing pin, and be provided with packing cavity in this pin sleeve, be provided with stuffing box packing in the described packing cavity, and this packing cavity is provided with Packing seat with respect to the inboard of stuffing box packing, and this packing cavity fixedly installs Gland with respect to the outside of stuffing box packing.This setting has ensured the sealing at the inside and outside two ends of bearing pin.
Further being provided with is the pointer that also is linkedly set with on the described bearing pin with the bearing pin coaxial rotation, is provided with motionless relatively direction board under the described pointer accordingly.By this setting, help to judge intuitively the position of flap.
Advantage of the present utility model is: by with the bearing pin of rocking bar interlock on interlock fixedly install fork, and then the tail end of fork is provided with counterweight member and Hinged piston bar, therefore, safety check is under the following current opening state, fluid is washed flap and lifting balancing weight slowly open, make safety check slowly open, and when safety check during at adverse current non-return state, rocking bar drives flap and rotates towards the seal valve seat direction, at this moment, fork compression piston bar is done damped motion, make flap gently move and close to seal valve seat, therefore, of the present utility model can preventing effectively opens and closes " water hammer " phenomenon and reduce impact to valve inner spare, the working life of having improved valve of too fast the appearance because of flap.
Below in conjunction with specification drawings and specific embodiments the utility model is done further introduction.
Description of drawings
Fig. 1 the utility model embodiment flap closed condition schematic representation;
Fig. 2 the utility model embodiment flap opening state schematic representation;
The cross-sectional figure of Fig. 3 the utility model embodiment;
Fig. 4 the utility model embodiment sectional side view.
Embodiment
Embodiment of the present utility model shown in Fig. 1-4, include valve body 1, valve gap 2, rocking bar 3 and the flap 4 that is installed on rocking bar 3 lower ends, the described flap 4 of present embodiment is fixed on rocking bar 3 lower ends by fastening screw trip bolt 41, be provided with in the described valve body 1 and flap 4 corresponding adaptive seal valve seats 11, be provided with in the described valve body 1 and hang 12, the upper end of described rocking bar 3 also is rotatably installed on bearing pin 5 interlocks by flat key 31 and hangs on 12, in addition, also include oil hydraulic cylinder 6, this oil hydraulic cylinder 6 includes the cylinder body 61 that is provided with damping oil 611 in it, piston rod 62, the piston 63 that has throttle orifice, because piston cylinder is known by the public, this place no longer is described in detail its structure and principle, also be linkedly set with fork 7 on the outer end of described bearing pin 5, the tail end of described fork 7 is provided with balancing weight 71, and the hinged interlock of described hydraulic cylinder piston rod 62 head ends is arranged at fork 7 middle section positions.
For the ease of arrangement of mechanism, the described fork 7 of present embodiment, oil hydraulic cylinder 6 all are arranged on valve body 1 outside, therefore in order to guarantee the sealing at external bearing pin 5 places in the valve body, described valve body 1 is provided with the pin sleeve 13 adaptive with bearing pin 5, and be provided with packing cavity in this pin sleeve 13, be provided with stuffing box packing 131 in the described packing cavity, and this packing cavity is provided with Packing seat 132 with respect to the inboard of stuffing box packing 131, this packing cavity fixedly installs Gland 133 with respect to the outside of stuffing box packing.
In addition, also be linkedly set with pointer 51 on the described bearing pin 5 with bearing pin 5 coaxial rotation, described pointer is provided with motionless relatively direction board 52 51 times accordingly, help to judge intuitively the position of flap 4, this direction board 52 of present embodiment is fixed on the Gland and constitutes relative motionless with pointer 51.
Claims (3)
1. be with oil hydraulic cylinder damping safety check for one kind, include valve body, valve gap, rocking bar and the flap that is installed on the rocking bar lower end, be provided with corresponding adaptive seal valve seat in the described valve body with flap, be provided with in the described valve body and hang, the upper end of described rocking bar also is rotatably installed on the bearing pin interlock and hangs, it is characterized in that: also include oil hydraulic cylinder, this oil hydraulic cylinder includes piston rod, also be linkedly set with fork on the outer end of described bearing pin, the tail end of described fork is provided with balancing weight, the hinged fork middle section position that is arranged at of described hydraulic cylinder piston rod head end.
2. a kind of band oil hydraulic cylinder damping safety check according to claim 1, it is characterized in that: described valve body is provided with the pin sleeve adaptive with bearing pin, and be provided with packing cavity in this pin sleeve, be provided with stuffing box packing in the described packing cavity, and this packing cavity is provided with Packing seat with respect to the inboard of stuffing box packing, and this packing cavity fixedly installs Gland with respect to the outside of stuffing box packing.
3. a kind of band oil hydraulic cylinder damping safety check according to claim 1 and 2 is characterized in that: also be linkedly set with the pointer with the bearing pin coaxial rotation on the described bearing pin, be provided with motionless relatively direction board under the described pointer accordingly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205476469U CN201764030U (en) | 2010-09-29 | 2010-09-29 | Check valve with hydraulic cylinder damping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205476469U CN201764030U (en) | 2010-09-29 | 2010-09-29 | Check valve with hydraulic cylinder damping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201764030U true CN201764030U (en) | 2011-03-16 |
Family
ID=43716635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205476469U Expired - Fee Related CN201764030U (en) | 2010-09-29 | 2010-09-29 | Check valve with hydraulic cylinder damping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201764030U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106838385A (en) * | 2017-04-18 | 2017-06-13 | 上正阀门集团有限公司 | The built-in check-valves of Slow Close |
| CN108953697A (en) * | 2018-08-13 | 2018-12-07 | 李琼 | A kind of band guide rod check-valves |
-
2010
- 2010-09-29 CN CN2010205476469U patent/CN201764030U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106838385A (en) * | 2017-04-18 | 2017-06-13 | 上正阀门集团有限公司 | The built-in check-valves of Slow Close |
| CN108953697A (en) * | 2018-08-13 | 2018-12-07 | 李琼 | A kind of band guide rod check-valves |
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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: 20110316 Termination date: 20150929 |
|
| EXPY | Termination of patent right or utility model |