CN2320829Y - Counterflow-preventing syphon device - Google Patents
Counterflow-preventing syphon device Download PDFInfo
- Publication number
- CN2320829Y CN2320829Y CN 97243853 CN97243853U CN2320829Y CN 2320829 Y CN2320829 Y CN 2320829Y CN 97243853 CN97243853 CN 97243853 CN 97243853 U CN97243853 U CN 97243853U CN 2320829 Y CN2320829 Y CN 2320829Y
- Authority
- CN
- China
- Prior art keywords
- pump
- liquid
- ball valve
- self
- bead
- 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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- Structures Of Non-Positive Displacement Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model relates to a device applied to a self-sucking pump for preventing the counterflow syphonage of the self-sucking pump. At present, a part of liquid in an outlet pipe of the self-sucking pump provided with an electric air control valve can spill from the opening of a pipeline communicated with an inlet pipe and the electric air control valve in the process of back flow when the pump stops running, and the phenomenon of the liquid particularly chemical liquid conveyed by the pump is not permitted to happen. The device can effectively increase pressure in the inlet pipe of the pump via a ball valve in order to cause the pressure to s equal to atmospheric pressure, and meanwhile, the back flow liquid can be prevented from spilling from the opening of the pipeline communicated with atmosphere.
Description
The utility model is applied on the self-priming pump, is self-priming pump prevent to flow backwards a kind of device of siphonage.
The self-priming pump of using on the current social needn't be poured water at prestart, through short-time running, leans on the effect of pump itself to drink up liquid, drops into to run well.The condition that self-priming pump can be worked is must have a certain amount of water in the pump startup front pump, and after the pump starting, the turning effort owing to impeller discharges gas by water, thereby realizes self-priming.Pump be negative pressure owing to inlet tube is interior, and the outer pipe internal pressure is higher when shutting down, so the refluence siphonage occurs, if do not take measures on inlet tube, the liquid in the pump can reflux and drop down light, thereby can not realize self-priming.For guaranteeing there is certain amount of fluid in the pump, two kinds of methods are arranged at present: (1) adds one-way valve in inlet tube, stops liquid return.(2) improve the interior pressure of inlet tube, make it to equal barometric pressure, that is equal the pressure in the outer pipe, like this, guaranteed that liquid no longer refluxes.Preceding a kind of method is very simple; but one-way valve is mostly made with rubber; working life is short, poor reliability, and the back is a kind of to be proposed by license notification number CN2204893Y and CN2209725Y; electric air control valve is installed by inlet at pump; in the moment that pump is shut down, electric air control valve is opened, and makes the directly logical atmosphere of inlet of pump; improve the pressure in the pump inlet pipe, eliminate the refluence siphonage of pump.Because it is higher that the delivery side of pump pipe is installed; when pump is shut down; liquid in the outer pipe is in reflux course; understanding some liquid overflows from the pipeline opening of inlet tube and electric air control valve connection; the liquid that this carries for pump; chemical liquid particularly, this phenomenon does not allow to take place, and make every effort to avoid.
The purpose of this utility model be to provide a kind of prevent to flow backwards eliminate the device of siphon, this device can improve the pressure in the pump inlet pipe effectively, makes it to equal barometric pressure, simultaneously, can prevent that also the liquid of backflow overflows from the pipeline of connecting atmosphere.
The purpose of this utility model is achieved in that this device is installed on the inlet tube of pump.This device mainly is made up of solenoid valve, piston valve, ball valve, and the ball valve top has a passage to communicate with atmosphere.When energising, the passage of the withdrawing fluid of this device is in closed state. when motor has a power failure, move on the piston, passage is opened, under the pressure of the withdrawing fluid of pump, with the bead jack-up in the ball valve, the valve seat of trapping the ball, thus realize sealing, make that withdrawing fluid can not overflow in the pump from this device.When the liquid in the pump discharge pipe constantly descends, bead is also along with decline, the liquid of bead top is back to again in the inlet tube of pump, like this, the inlet tube of pump and the atmosphere of ball valve top are connected, improved the pressure in the pump inlet pipe, and equaled the pressure in the outer pipe, thereby the generation of the siphonage that prevents to flow backwards guarantees there is a certain amount of circulating liquid in the pump.
The utility model is because only need connect a ball valve on the next door of piston valve, so structure is simple especially, only have in mind simultaneously to solve to allow and have a certain amount of circulating liquid in the pump, do not allow again liquid overflows in the pump from the ball valve passage, so the self-priming pump of installing is not had specific (special) requirements.
The concrete structure of model utility is provided by following embodiment and accompanying drawing.
Accompanying drawing is the sectional drawing of anti-back flow siphoning installation.
It among the figure spring seat (1), bolt (2), elastic washer (3), sealing gasket (4), O RunddichtringO (5), piston (6), O RunddichtringO (7), ball valve channel seat (8), piston spring (9), ball retaining plate (10), bead (11), ball valve seat (12), O RunddichtringO (13), O RunddichtringO (14), connecting base (15), rubber pad (16), hexagon socket head cap screw (17), bolt (18), electromagnetic core (19), electromagnetic coil (20), wire frame (21), wiring terminal (22), (23), overflow ducts (24), passage (25), (26), (27), (28).
This device is installed on the inlet tube of pump, is the state under the solenoid valve dead electricity situation among the figure.
The electricity of this device solenoid valve is connected on the pump motor.When pump motor was switched on, solenoid valve was connected, and under the effect of electromagnetic force, electromagnetic core (19) moves down, and promote piston (6) by rubber pad (16) and compress sealing gasket (4), closing passage (27), thus can guarantee the normal startup of pump.
When pump motor has a power failure, solenoid valve dead electricity then, electromagnetic force disappears, piston (6) is jack-up under the elastic force effect of piston spring (9), opens passage (26), at this moment, under the pressure effect of pump discharge pipe withdrawing fluid, liquid is from inlet tube inlet passage (27), (26), (28) of pump, and with bead (11) jack-up, the valve seat of trapping the ball (12).Realize sealing, flow out outside the ball valve, and the surface of contact of ball valve seat (12) and bead is the conical surface that cone angle is 45 °～75 °, strengthened sealability and reduced the wearing and tearing of ball to guarantee liquid that can not.During bead jack-up, in order to have prevented that few part liquid from overflowing from the ball valve seat top, so be provided with passage (25) above it, its length is 2～15 times of little bulb diameter, liquid rises to certain altitude and stops, thereby guarantees that liquid comprises that chemical liquid can not overflow outside the ball valve in passage (25).
When the liquid in the pump discharge pipe drops to center height with bead (11) in same level, continue to descend, tool bead (11) also descends thereupon, and drop to ball retaining plate (10) and stop, at this moment, passage (25), (28), (26), (27) Nei liquid is also along with dropping in the pump inlet pipe, simultaneously by passage (25), (28), (26), (27) water pump inlet tube and atmosphere are directly connected, thereby eliminated the negative pressure in the inlet tube, and consistent with the liquid level pressure in the outer pipe, guaranteed that liquid that can not refluxes in the pump, so pump is when start next time, owing to have certain amount of fluid in the pump, just can realize self-priming.
Claims (4)
1, is applied in the anti-back flow siphoning installation of eliminating negative pressure in the inlet tube on the self-priming pump, this device comprises piston (6), piston spring (9) and the spring seat (1) of electromagnetic coil (20), electromagnetic core (19), electromagnetic core below, it is characterized in that on spring seat (1) side a ball valve being installed, this ball valve is made of ball valve channel seat (8), bead (11), ball retaining plate (10), ball valve seat (12).
2, device according to claim 1 is characterized in that the ball valve seat (12) and the surface of contact of bead are the conical surface, and cone angle is 45 °～75 °.
3, device according to claim 2 is characterized in that the ball valve seat top is provided with passage (25), and its length is 2～15 times of little bulb diameter.
4, device according to claim 1 is characterized in that the proportion of bead (11) is slightly less than water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97243853 CN2320829Y (en) | 1997-10-30 | 1997-10-30 | Counterflow-preventing syphon device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97243853 CN2320829Y (en) | 1997-10-30 | 1997-10-30 | Counterflow-preventing syphon device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2320829Y true CN2320829Y (en) | 1999-05-26 |
Family
ID=33952735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97243853 Expired - Fee Related CN2320829Y (en) | 1997-10-30 | 1997-10-30 | Counterflow-preventing syphon device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2320829Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240282A (en) * | 2015-10-28 | 2016-01-13 | 桂林新艺制冷设备有限责任公司 | Self sucking pump with backflow prevention suspension sphere |
| CN109788805A (en) * | 2016-09-28 | 2019-05-21 | 尼科创业控股有限公司 | Fluid reservoir for steam feed system |
-
1997
- 1997-10-30 CN CN 97243853 patent/CN2320829Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240282A (en) * | 2015-10-28 | 2016-01-13 | 桂林新艺制冷设备有限责任公司 | Self sucking pump with backflow prevention suspension sphere |
| CN109788805A (en) * | 2016-09-28 | 2019-05-21 | 尼科创业控股有限公司 | Fluid reservoir for steam feed system |
| CN109788805B (en) * | 2016-09-28 | 2021-11-05 | 尼科创业贸易有限公司 | Liquid storage tank for vapor supply system |
| US11723405B2 (en) | 2016-09-28 | 2023-08-15 | Nicoventures Trading Limited | Liquid storage tank for a vapor provision system |
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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 |