CN2924089Y - Pressure-regulation type multifunction water pump control valve - Google Patents
Pressure-regulation type multifunction water pump control valve Download PDFInfo
- Publication number
- CN2924089Y CN2924089Y CN 200620129821 CN200620129821U CN2924089Y CN 2924089 Y CN2924089 Y CN 2924089Y CN 200620129821 CN200620129821 CN 200620129821 CN 200620129821 U CN200620129821 U CN 200620129821U CN 2924089 Y CN2924089 Y CN 2924089Y
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- valve
- pressure
- pump
- slow
- water pump
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Abstract
A pressure-regulated multi-functional pump control valve enables the pump not to reversely rotate when the pump is stopped. The utility model is a special valve for a pump, which is serially connected and combined by a hydraulic-control overflow valve and a hydraulic-control slow-closure valve and is parallel to a general check valve. When the pump is opened, the inlet pressure of the valve controls the water to enter the back-pressure cavity of the hydraulic-control overflow valve, to make the overflow valve close to the valve port; the other route pressure controls the water to enter the lower chamber of the hydraulic-control slow-closure valve to lift the slow-closure plate; under the assistance of the starting force of the main valve plate, the slow-closure valve is slowly started. When the pump is stopped, the inlet of the pump control valve loses the pressure, the main valve plate is fast closed, the return water in the pipeline enters the overflow valve by the opened slow-closure valve port; the spring force of the overflow valve is overcome to open the valve plate before the water hammer peak comes, to the pipeline pressure water relieves the pressure and goes out; as the pressure relief return water does not pass the pump body, the pump will not be reversely rotated. The pressure-regulated multi-functional pump control valve has the features of that the slow-closure time is adjusted by the adjustment of the slow-closure check valve and the pump-stop water hammer peak is controlled to some extent by adjustment of the back-pressure spring force of the overflow valve. Owing to the bypass reflux of the control valve, the pump and the motor does not reversely rotate and has a reasonable structure.
Description
Affiliated technical field
The utility model relates to a kind of multifunctional water pump control valve, and especially water hammer pressure can be set up, and the bypassing reflux stream pressure release makes the nonreversible multifunctional water pump control valve of water pump.
Background technique
At present, known multifunctional water pump control valve internal structure characteristics all are in the main valve plate slow-closure type valve to be set, and external structural characteristics is two logical lids.Termination of pumping operating mode characteristics are: the main valve plate closes soon, and the water in the pipeline refluxes by transient state in the Slow Close mouth in the main valve plate under effect of inertia, thereby reduces the water hammer that termination of pumping produces.Because high-velocity fluid refluxes in pump chamber, makes the water pump rotor high speed reverse rotation, this can work the mischief to water pump.In order to reduce or to avoid reversing to the harm of water pump, in China's engineering construction standard association criterion " plumbing multifunctional water pump control valve technical regulations ", debugging one joint 7.0.3-2 regulation: " termination of pumping transient state maximum inversion speed is not more than 1.2 times of rated speed ".Because counter-rotating can make spindle nut loosening, secondly, known multifunctional water pump control valve water hammer value is to set Slow Close valve port sectional area by calculating, and the error scene occurring can not adjust, and can cause problems such as water hammer value or speed reversal exceed standard.
Summary of the invention
In order to overcome the existing problem such as water pump counter-rotating that can cause in using with multifunctional water pump control valve, the utility model provides a kind of pressure regulating type multifunctional water pump control valve.This pressure regulating type multifunctional water pump control valve not only during termination of pumping pump motor nonreversible, and the water hammer peak value can be set up within the specific limits.
The technological scheme that its technical problem that solves the utility model adopts is: by a hydraulic control device (this hydraulic control unit is installed on the safety check top cover) in parallel with general safety check A that is become with hydraulic control slow closing valve C tandem compound by pilot relief valve B.During turn on pump, this valve inlet pressure control water enters the pilot relief valve back pressure cavity through filter makes relief valve close valve port, another road pressure control water advances people's hydraulic control slow closing valve cavity of resorption through filter, throttle valve, and under the active force of main valve plate opening force and differential pressure cylinder, the hydraulic control slow closing valve is slowly opened.During termination of pumping, pressure regulating type multifunctional water pump control valve water intake decompression main valve plate closes soon, and the pipeline backwater enters spill cavity through the Slow Close mouth of opening, and the spring force that overcomes relief valve before the water hammer peak value arrives is opened valve plate and made the pressure release of pipeline pressure water and go out.When the water hammer peak value will arrive, along with pressure increases the relief valve length of spring compressed, the valve plate aperture increased, and pressure decreases.In like manner, when pressure reduces, the overflow spring flicks the valve plate aperture and reduces, and pressure increases thereupon, and it is fixed by the relief valve effect water hammer pressure to be weighed within the specific limits like this.In addition, pressure regulating type multifunctional water pump control valve outlet pressure control water enters Slow Close cylinder epicoele through filter, throttle valve, and slow-closure type valve cavity of resorption back pressure backwater returns into the control valve import through throttle valve, filter like this.Because termination of pumping pipeline backwater is discharged through pressure regulating type multifunctional water pump control valve by-pass port, without the pump housing, so water pump is nonreversible.
The beneficial effects of the utility model are: water hammer pressure can be set up within the specific limits, safety, convenient.Secondly, pump motor is nonreversible and rational in infrastructure during termination of pumping.
Description of drawings
Below in conjunction with drawings and Examples model utility is further specified.
Fig. 1 is a hydraulic control schematic diagram of the present utility model.
Fig. 2 is pressure regulating type multifunctional water pump control valve embodiment vertical section structure figure.
Among Fig. 1,22 general safety check, 23 pilot relief valves, 24 hydraulic control slow closing valves, 8 cavity of resorption throttle valve, 20 epicoele throttle valve, solid line are main line, and dotted line is the propagation of pressure pipe, and the dotted line of band arrow is an escape pipe.
Among Fig. 2,1 main valve plate is used the pilot seal seat more 2,3 hydraulic control valve cross housings, the Slow Close axle of 4 band valve plates, 5 inlet filter, the overflow valve shaft of 6 band valve plates, 7 relief valve pilot seal seats, 8 cavity of resorption throttle valve, the Slow Close lamina membranacea of 9 band pressing plates, 10 fastening screw nuts, 11 (O shape cushion rubbers), 12 guiding end caps, 13 Slow Close cylinder caps, 14 connecting bolts, the relief valve lamina membranacea of 15 band pressing plates, 16 spring regulators, 17 relief valve cylinder caps, 18 filters, 19 fastening screw nuts, 20 epicoele throttle valve, 21 propagation of pressure pipes, 22 safety check.
Embodiment
In schematic diagram 1,23 pilot relief valves and 24 hydraulic control slow closing valve port series connections also connect (this is a separate assembling) with 22 safety check again, check valve inlet pressure transfer tube one tunnel is connected with the pilot relief valve back pressure cavity, another road 8 throttle valve connect hydraulic control slow closing valve cavity of resorption, and safety check outlet end 21 propagation of pressure pipes are connected hydraulic control slow closing valve epicoele with 20 epicoele throttle valve.
In embodiment Fig. 2, by the assemble sequence narration.The first step 22 safety check, 1 main valve plate, more than 2 adopt the assembling that is slidingly matched with the pilot seal seat.The overflow valve shaft of second step, 3 hydraulic control valve cross housings, 7 relief valve pilot seal seats, 6 band valve plates, relief valve lamina membranacea, 19 fastening screw nuts, 16 spring regulators, 17 relief valve cylinder caps, 14 connecting bolts of 15 band pressing plates seal fastening (requiring 6 participants to be slidingly matched) with relief valve.Overflow valve shaft and 3 hydraulic control valve cross housing endoporus that the Slow Close axial cross of the 3rd step 4 band valve plates passes 6 band valve plates are joined 11 (O type cushion rubbers) and are slidingly matched, again with seal fastening with 14 connecting bolts after Slow Close lamina membranacea, 10 fastening screw nuts, 13 Slow Close cylinder caps, the 12 guide end bonnet bolts of 9 band pressing plates are connected.The 4th step cross control valve that will assemble and 22 safety check and more than 2 are slidingly matched with the pilot seal seat again and are connected (require 4 and 2 be slidingly matched sealing) with 14 connecting bolt flange seals.The 5th step auxiliary device connects 21 propagation of pressure pipes, 20 epicoele throttle valve, 18 filters, 13 Slow Close cylinder caps be connected (requiring sealing), the entrance point transfer tube is connected with 5 inlet filter, one the tunnel connects the relief valve cylinder cap, another road is connected (requiring sealing) through 8 cavity of resorption throttle valve with Slow Close cylinder cavity of resorption, outlet valve is installed is at last got final product.
Claims (5)
1, a kind of pressure regulating type multifunctional water pump control valve, main valve plate in valve housing, hydraulic rod, oil hydraulic cylinder is connected in proper order, it is characterized in that: the hydraulic control slow closing valve outlet port setting of connecting with hydraulic control voltage stabilizing valve port on the main valve body top cover.
2, pressure regulating type multifunctional water pump control valve according to claim 1 is characterized in that: pressure spring and regulator bolts are set in the pilot relief valve.
3, pressure regulating type multifunctional water pump control valve according to claim 1, it is characterized in that: the hydraulic control valve chest is cross.
4, pressure regulating type multifunctional water pump control valve according to claim 1 is characterized in that: the axle of hydraulic control slow closing valve intersects with the axial cross of pilot relief valve.
5, pressure regulating type multifunctional water pump control valve according to claim 1 is characterized in that: the main valve plate the axle and the shared pilot seal seat of using of Slow Close valve shaft more, and with Slow Close sealing seat one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620129821 CN2924089Y (en) | 2006-07-26 | 2006-07-26 | Pressure-regulation type multifunction water pump control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620129821 CN2924089Y (en) | 2006-07-26 | 2006-07-26 | Pressure-regulation type multifunction water pump control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2924089Y true CN2924089Y (en) | 2007-07-18 |
Family
ID=38260520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620129821 Expired - Fee Related CN2924089Y (en) | 2006-07-26 | 2006-07-26 | Pressure-regulation type multifunction water pump control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2924089Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206383B (en) * | 2013-04-11 | 2015-12-09 | 南京航空航天大学 | With the gas heart pump of impeller central ftercompction controlling device |
-
2006
- 2006-07-26 CN CN 200620129821 patent/CN2924089Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206383B (en) * | 2013-04-11 | 2015-12-09 | 南京航空航天大学 | With the gas heart pump of impeller central ftercompction controlling device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |