CN202520999U - Pressure-changing energy-saving check valve - Google Patents
Pressure-changing energy-saving check valve Download PDFInfo
- Publication number
- CN202520999U CN202520999U CN2012200875832U CN201220087583U CN202520999U CN 202520999 U CN202520999 U CN 202520999U CN 2012200875832 U CN2012200875832 U CN 2012200875832U CN 201220087583 U CN201220087583 U CN 201220087583U CN 202520999 U CN202520999 U CN 202520999U
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- hydraulic cylinder
- valve body
- changing
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- cylinder
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Abstract
A pressure-changing energy-saving check valve comprises a valve body. A valve clack is arranged at an inlet of the valve body which is provided with a hydraulic cylinder. A piston rod of the hydraulic cylinder extends into the valve body. A piston of the hydraulic cylinder is provided with a spring. The pressure-changing energy-saving check valve is characterized in that a pressure-changing cylinder is arranged on the hydraulic cylinder or the valve body, an oil bladder is arranged in the pressure-changing cylinder, an inner cavity of the pressure-changing cylinder is communicated with a pipeline in front of the valve clack, and the oil bladder is communicated with the bottom of the hydraulic cylinder. As the pressure-changing cylinder and the oil bladder are arranged, after a water pump is opened, water and impurities enter the pressure-changing cylinder, and the oil bladder is squeezed to squeeze hydraulic oil in the oil bladder into the hydraulic cylinder so that the valve clack can be completely opened. Accordingly, service life is long due to the fact that the hydraulic cylinder does not rust and the impurities which block the piston do not enter the hydraulic cylinder. Simultaneously, the hydraulic cylinder is easy to clean, the oil bladder can be replaced at any time, daily maintenance difficulty and maintenance cost are lowered, and cost is low.
Description
Technical field
The utility model relates to a kind of changing and presses energy-conservation safety check.
Background technique
In water supply and sewerage pipeline, the fluid when preventing termination of pumping or sudden power in the pipe network refluxes suddenly and forms " water hammer " equipment is damaged, and on the water outlet pipeline of water pump, safety check is installed usually.Because the pressure of fluid is different in the water supply and sewerage pipeline, the flap opening degree of safety check is also inequality, and in most of the cases, the flap of safety check usually is in half-open position.Can produce very big turbulent flow, eddy current near the half-open flap, consume lot of energy, reduce the working efficiency of water supply and sewerage pipeline.
For improving the working efficiency of water supply and sewerage pipeline, a kind of safety check is disclosed in CN202048245U, this safety check by valve body, be hinged on flap on the valve body, form with the valve body oil hydraulic cylinder that is connected that enters the mouth, the piston rod of oil hydraulic cylinder stretches in the valve body.After water pump was opened, flap was in half-open position, and simultaneously, oil hydraulic cylinder is started working under the pressure of water pump, and piston rod is opened flap fully.The shortcoming of this structure is: water directly gets into oil hydraulic cylinder, causes the inwall of oil hydraulic cylinder to get rusty, and the piston in the oil hydraulic cylinder is stuck, thereby can't work, and the impurity in the pipe network gets into oil hydraulic cylinder with current, also can seized piston, shortened the working life of safety check; The impurity that deposits in the oil hydraulic cylinder is easy to clean not, in case stuck piston needs to change oil hydraulic cylinder, maintenance cost is high.
Summary of the invention
The technical problem that the utility model will solve provides a kind of long service life, be convenient to clear up, maintenance cost is low changes and presses energy-conservation safety check.
The utility model is achieved in that
A kind of changing pressed energy-conservation safety check, comprises valve body, is provided with flap in the valve body ingress; On valve body, be provided with oil hydraulic cylinder, the piston rod of oil hydraulic cylinder stretches in the valve body, on the piston of oil hydraulic cylinder, is provided with spring; Its special way is: on oil hydraulic cylinder or valve body, be provided with and change cylinder pressure; In changing cylinder pressure, be provided with oil sac, the described inner chamber that changes cylinder pressure is connected with pipeline before being positioned at flap, and described oil sac is communicated with bottom oil hydraulic cylinder.
Above-mentioned changing pressed energy-conservation safety check, and described oil hydraulic cylinder is positioned at valve body lower portion, and piston rod and flap to back down the position relative up and down, when piston rod stretches out fully, be able to flap be backed down fully.
Above-mentioned changing pressed energy-conservation safety check, and described oil hydraulic cylinder is positioned at valve body top, described piston-rod lower end be hook-shaped and with flap to mention the position relative up and down, when piston rod is withdrawn fully, be able to flap be mentioned fully.
Energy-conservation safety check is pressed in above-mentioned changing, and described piston rod is the branch body structure that is formed by connecting the hook and the body of rod, so that assembling.
Above-mentioned changing pressed energy-conservation safety check, is provided with dismantled and assembled cylinder cap on the cylinder pressure changing, so that change oil sac or cylinder pressure is changed in cleaning.
Energy-conservation safety check is pressed in above-mentioned changing, and the insert division of corresponding piston rod is provided with copper sheathing on valve body, in copper sheathing, is provided with seal ring.
The usefulness of the utility model is:
Owing to be provided with and change cylinder pressure and oil sac, after water pump was opened, current, impurity got into and change cylinder pressure; Through the extruding oil sac; Hydraulic oil in the oil sac is clamp-oned the action of oil hydraulic cylinder to realize opening flap fully, and oil hydraulic cylinder can not prolong working life because of getting rusty, get into the impurity seized piston; Simultaneously, change cylinder pressure and be convenient to cleaning, oil sac can be changed at any time, has reduced the difficulty and the maintenance cost of regular maintenance, and cost is low.
Description of drawings
Fig. 1 is the structural representation (corresponding embodiment 1) of the utility model;
Fig. 2 is the A portion enlarged view of Fig. 1;
Fig. 3 is the structural representation (corresponding embodiment 2) of the utility model.
Among the figure: valve body 1, flap 2, oil hydraulic cylinder 3, spring 301, piston 302, piston rod 303, body of rod 303a, hook 303b changes cylinder pressure 4, oil sac 401, cylinder cap 402, copper sheathing 5, seal ring 6.
Embodiment
Embodiment 1
Like Fig. 1, shown in Figure 2; This changes presses energy-conservation safety check to comprise valve body 1; Be hinged with flap 2 in valve body 1 ingress, be connected with oil hydraulic cylinder 3 at valve body 1 upper surface through bolt, the piston rod 303 of oil hydraulic cylinder 3 stretches in the valve body 1; Described piston rod 303 is the branch body structures that are formed by connecting hook 303b and body of rod 303a, is provided with spring 301 at piston 302 upper surfaces.The insert division of corresponding piston rod 303 is provided with copper sheathing 5 on the valve body 1, in copper sheathing 5, is provided with seal ring 6.On oil hydraulic cylinder 3, be connected with and change cylinder pressure 4 through bolt; (the described cylinder pressure 4 that changes also can be arranged on the valve body 1); Be connected with cylinder cap 402 through flange changing on the cylinder pressure 4; Through the oil sac 401 that has been threaded, the described inner chamber that changes cylinder pressure 4 is connected with pipeline before being positioned at flap 2 in changing cylinder pressure 4, and described oil sac 401 is communicated with oil hydraulic cylinder 3 bottoms.
During work, water pump is opened, and the pressure in the water supply and sewerage pipeline increases, and flap 2 is opened.Simultaneously, current get into and change in the cylinder pressure 4, and the hydraulic oil in the oil sac 401 is clamp-oned in the oil hydraulic cylinder 3, promote piston 302 and move up, and drive hook 303b flap 2 is mentioned, and when piston 302 stop motions, flap 2 be able to be mentioned fully.
When water pump quit work, piston 302 drove piston rod 303 and resets under the effect of spring 301, and flap 2 is closed, and prevents that water hammer from wounding equipment.
Embodiment 2
As shown in Figure 3; This changes presses energy-conservation safety check to comprise valve body 1, is hinged with flap 2 in valve body 1 ingress, is connected with oil hydraulic cylinder 3 at valve body 1 lower surface through bolt; The piston rod 303 of oil hydraulic cylinder 3 stretches in the valve body 1, is provided with spring 301 at piston 302 upper surfaces of oil hydraulic cylinder 3.The insert division of corresponding piston rod 303 is provided with copper sheathing 5 on the valve body 1, in copper sheathing 5, is provided with seal ring 6 (as shown in Figure 2).On oil hydraulic cylinder 3, be connected with and change cylinder pressure 4 through bolt; (the described cylinder pressure 4 that changes also can be arranged on the valve body 1); Be connected with cylinder cap 402 through flange changing on the cylinder pressure 4; Through the oil sac 401 that has been threaded, the described inner chamber that changes cylinder pressure 4 is connected with pipeline before being positioned at flap 2 in changing cylinder pressure 4, and described oil sac 401 is communicated with oil hydraulic cylinder 3 bottoms.
During work, water pump is opened, and the pressure in the water supply and sewerage pipeline increases, and flap 2 is opened.Simultaneously, current get into and change in the cylinder pressure 4, and the hydraulic oil in the oil sac 401 is clamp-oned in the oil hydraulic cylinder 3, promote piston 302 and move up, and piston rod 303 rises, and when piston 302 stop motions, flap 2 be able to be by complete jack-up.
When water pump quit work, piston 302 drove piston rod 303 and resets under the effect of spring 301, and flap 2 is closed, and prevents that water hammer from wounding equipment.
Claims (6)
1. one kind is changed the energy-conservation safety check of pressure, comprises valve body, is provided with flap in the valve body ingress; On valve body, be provided with oil hydraulic cylinder, the piston rod of oil hydraulic cylinder stretches in the valve body, on the piston of oil hydraulic cylinder, is provided with spring; It is characterized in that: on oil hydraulic cylinder or valve body, be provided with and change cylinder pressure; In changing cylinder pressure, be provided with oil sac, the described inner chamber that changes cylinder pressure is connected with pipeline before being positioned at flap, and described oil sac is communicated with bottom oil hydraulic cylinder.
2. according to claim 1 changing pressed energy-conservation safety check, and it is characterized in that: described oil hydraulic cylinder is positioned at valve body top, described piston-rod lower end be hook-shaped and with flap to mention the position relative up and down, when piston rod is withdrawn fully, just flap is mentioned fully.
3. according to claim 1 changing pressed energy-conservation safety check, and it is characterized in that: described oil hydraulic cylinder is positioned at valve body lower portion, and piston rod and flap to back down the position relative up and down, when piston rod stretches out fully, just flap is backed down fully.
4. according to claim 2 changing pressed energy-conservation safety check, and it is characterized in that: described piston rod is the branch body structure that is formed by connecting the hook and the body of rod.
5. according to claim 1 changing pressed energy-conservation safety check, it is characterized in that: be provided with dismantled and assembled cylinder cap on the cylinder pressure changing.
6. according to claim 1 changing pressed energy-conservation safety check, and it is characterized in that: the insert division of corresponding piston rod is provided with copper sheathing on valve body, in copper sheathing, is provided with seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200875832U CN202520999U (en) | 2012-03-10 | 2012-03-10 | Pressure-changing energy-saving check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200875832U CN202520999U (en) | 2012-03-10 | 2012-03-10 | Pressure-changing energy-saving check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202520999U true CN202520999U (en) | 2012-11-07 |
Family
ID=47103951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200875832U Expired - Fee Related CN202520999U (en) | 2012-03-10 | 2012-03-10 | Pressure-changing energy-saving check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202520999U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106812692A (en) * | 2015-02-09 | 2017-06-09 | 张朝利 | A kind of construction method of water pump flap automatic cover-turning device |
-
2012
- 2012-03-10 CN CN2012200875832U patent/CN202520999U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106812692A (en) * | 2015-02-09 | 2017-06-09 | 张朝利 | A kind of construction method of water pump flap automatic cover-turning device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20130310 |