CN201416727Y - Negative-pressure protective end cover for drainage and irrigation water pipeline - Google Patents
Negative-pressure protective end cover for drainage and irrigation water pipeline Download PDFInfo
- Publication number
- CN201416727Y CN201416727Y CN200920089399XU CN200920089399U CN201416727Y CN 201416727 Y CN201416727 Y CN 201416727Y CN 200920089399X U CN200920089399X U CN 200920089399XU CN 200920089399 U CN200920089399 U CN 200920089399U CN 201416727 Y CN201416727 Y CN 201416727Y
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- lid
- irrigation
- sealing gasket
- negative pressure
- end cap
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Abstract
The utility model discloses a negative-pressure protective end cover for a drainage and irrigation water pipeline, which comprises a cover body. An arc-shaped sealing gasket is arranged in the cover body; threads are arranged on the inner side wall of the cover body; a ventilation hole is also formed on the end surface of the cover body. By adopting the structure, the utility model has the advantages of simple and compact structure, convenient installation and good sealing performance and can effectively solve the defect of the prior sealing manner and quickly balance the air pressure inside and outside the pipeline when negative pressure is generated in the pipeline, thereby avoiding the damage caused by larger internal pressure of the pipeline and saving water and power.
Description
Technical field
The utility model relates to the obturator of irrigation and drainage aqueduct, particularly a kind of airtight end cap of buried irrigation and drainage conduit pipe.
Background technique
At present, for a change the rural area old habit of living at the mercy of the elements is guaranteed the farmland high yields irrespective of drought or water logging, various places Daxing construction of water conservancy works, and the buried irrigation and drainage aqueduct that many places have all used an end to connect motor-pumped well is formed netted irrigation system.For guaranteeing the working life of pipe network, this irrigation and drainage aqueduct is made of plastics substantially.For guaranteeing the airtight of each water outlet of pipe network, technique known is to use seal washer, round plastic cover plate and annular plastics lid hoop combination spinning on outlet conduit.For guaranteeing the safety of aqueduct, aqueduct is generally buried with certain degree of depth.But in some place, the hills is more, it is indefinite that aqueduct will rise and fall when laying, after irrigation is finished motor-pumped well and is quit work, the water that is positioned at the pipeline of physical features higher position will flow to the physical features lower, its outlet pipe portion that is in the physical features higher position can produce powerful pressure difference and form negative pressure, destroys the sealing of the mouth of pipe or pipeline connection part easily, even breaks in the middle of can causing pipeline.Because it is underground that pipeline is embedded in, the damaged location of pipeline is difficult to find, when irrigating next time, not only can cause the waste of great lot of water resources, simultaneously, is other overlay area of irrigation pipe network, and motor-pumped well just must prolong running time, also can waste electric power resource.
I am that 00229113.4 utility model patent specification discloses a kind of self-enclosed device that is used for the irrigation and drainage conduit pipe with the patent No. of on January 18th, 2000 application, this device comprises outlet pipe and the spinning enclosing cover on it, outlet pipe is provided with the closing in of turning near the port, cover the corresponding end mouth outward and be provided with groove, between outlet pipe and enclosing cover, be provided with the arc sealing gasket.This installs in use, and the arc sealing gasket is finished sealing by the junction sealing of hydraulic pressure with enclosing cover and outlet pipe port.But this device has the defective that can't carry out negative pressure protection equally, produces under the situation of negative pressure in the irrigation and drainage pipeline, and outside air is difficult to enter pipe interior, can not the inside and outside air pressure of balance irrigation and drainage pipeline, and therefore can't avoid the irrigation and drainage pipeline to damage because of the effect of negative pressure.
The model utility content
The purpose of this utility model provides a kind of negative pressure protection end cap of irrigation and drainage conduit pipe water outlet, to address the above problem.
The technical solution of the utility model is: a kind of negative pressure protection end cap of irrigation and drainage aqueduct; comprise lid; lid has and is used for the attachment portion that is connected with outlet pipe; be provided with sealing gasket in the lid; the sealing gasket diameter also offers the vent that communicates with lid portion inside greater than the nozzle diameter that is connected with the lid attachment portion on the end face of described lid.
Further, go for the aqueduct of various diameters for making this end cap, also comprise an outlet pipe, an end of this outlet pipe is connected with described lid is coaxial, and its other end is used to connect aqueduct.
Further, be the sealing effect of surface of contact under hydraulic pressure of enhanced leaktightness pad and end cap inwall, the end face inwall of described lid is the concave arc shape structure.
Further, for strengthen combining of end cap and pipeline under the situation of not destroying the sealing gasket effect, the connecting part with the lid attachment portion on the end face of described lid is provided with annular groove, and the lid mouth of the notch of this groove and lid in the same way.
Be the sealing effect of further enhanced leaktightness pad, described sealing gasket is provided with at least two circles annular ditch groove concentric with sealing gasket towards the one side of lid end face.
Be the elasticity of further enhanced leaktightness pad, the described sealing gasket one side of lid end face dorsad is provided with the radial fin that extends by around the mind-set in the sealing gasket.
Further, described fin is by attenuation gradually around the mind-set in the sealing gasket.
For preventing the crooked sealing effect that loses of sealing gasket, simultaneously, can the fixing seal pad, make it movable in certain scope, the end face center of described lid offers the centre pilot hole, the corresponding pilot hole in described sealing gasket center is provided with location guide, and this location guide and described centre pilot hole are slidingly matched.
The end face center of described lid offers the center fixation hole, and the corresponding positioning hole in described sealing gasket center is provided with fixing rod, and described fixing rod is fixedly mounted in the described positioning hole.
The attachment portion of described lid is provided with connecting thread or the spinner structure that is connected with aqueduct.
Adopt said structure, it is simple in structure, compact, and is easy for installation, not only good airproof performance.And can effectively solve the defective that has sealing means now, when in pipeline, producing negative pressure, can avoid pipeline because of the excessive damage that causes of interior pressure, water and electric saving by the inside and outside air pressure of the rapid equalizing main of ventilating hole.Its improvement makes the scientific management of agricultural water-saving irrigation water transfer pipe network systems engineering that new breakthrough arranged, and drips for fully saving each, effectively protects the sustainable utilization of water resources to play a positive role.
Description of drawings
Fig. 1 is the utility model embodiment one a structural representation;
Fig. 2 is the utility model embodiment one user mode figure;
Fig. 3 is the utility model embodiment two a structural representation.
Embodiment
Embodiment one: as shown in Figure 1; the negative pressure protection end cap of irrigation and drainage aqueduct of the present utility model comprises end face 1 and sidewall 2 and is installed in the interior arc sealing gasket 7 of end cap; interior peripheral surface at end cap sidewall 2 offers the screw thread 3 that cooperates with the water delivery mouth of pipe; be provided with groove 4 at the end face 1 of end cap and the connecting part of sidewall 2, the lid mouth of the notch of this groove 4 and end cap in the same way.The internal surface of the end face 1 of end cap is the concavity cambered surface, offers many places vent 9 on this end face 1.Offer the centre pilot hole at the center of this end face 1, slidable fit has the location guide 5 of " worker " font in this centre pilot hole, and an end of this location guide 5 is fixed on the center of arc sealing gasket 7.This arc sealing gasket 7 is provided with at least two circles annular ditch groove 6 concentric with sealing gasket towards the one side of the end face 1 of end cap, and its one side towards the lid mouth is provided with radial fin 8, and this fin 8 is by attenuation gradually around the middle mind-set of sealing gasket 7.
During use as shown in Figure 2, with the end cap spinning on the water delivery mouth of pipe, when water transfer pipe network was irrigated, its inside water pressure was greater than external pressure, and arc sealing gasket 7 is pressed on the end face 1 of end cap by hydraulic pressure, play seal action, when stopping to irrigate, the external pressure of pipeline produces negative pressure greater than air pressure inside, and sealing gasket breaks away from the end face 1 of end cap, air enters pipeline rapidly from vent 9, and is poor with the external and internal pressure of equalizing main.
Embodiment two: as shown in Figure 3, present embodiment two is with embodiment one difference, arc sealing gasket 7 is fixed on the end cap by the location guide 5 of jackscrew with its center, sealing gasket is fixed on the lid, when in pipeline, producing negative pressure, air pressure directly blows down arc sealing gasket 7, and gas enters in the pipeline from the space of the outward edge of arc sealing gasket 7 and inner-walls of duct.
The utility model is not limited to the foregoing description, and being connected and fixed between sealing gasket and the lid can also be adopted alternate manner, changes screw mandrel into as the centralized positioning guide rod with sealing gasket, be installed in sealing gasket on the lid after, with the nut spinning on screw mandrel.By changing screwing or unscrewing of nut, can use in a different manner like this.
In the utility model, the vent of lid end face can decide according to the situation of concrete pipe laying.
Claims (10)
1, a kind of negative pressure of irrigation and drainage aqueduct protection end cap; comprise lid; lid has and is used for the attachment portion that is connected with outlet pipe; be provided with sealing gasket in the lid; the sealing gasket diameter is greater than the nozzle diameter that is connected with the lid attachment portion; it is characterized in that, on the end face of described lid, also offer the vent that communicates with lid portion inside.
2, the negative pressure of irrigation and drainage aqueduct according to claim 1 protection end cap is characterized in that also comprise an outlet pipe, an end of this outlet pipe is connected with described lid is coaxial, and its other end is used to connect aqueduct.
3, the negative pressure of irrigation and drainage aqueduct according to claim 1 and 2 protection end cap is characterized in that the end face inwall of described lid is the concave arc shape structure.
4, the negative pressure of irrigation and drainage aqueduct according to claim 1 and 2 protection end cap is characterized in that the connecting part with the lid attachment portion on the end face of described lid is provided with annular groove, and the lid mouth of the notch of this groove and lid in the same way.
5, the negative pressure of irrigation and drainage aqueduct according to claim 1 and 2 protection end cap is characterized in that, described sealing gasket is provided with at least two circles annular ditch groove concentric with sealing gasket towards the one side of lid end face.
6, the negative pressure of irrigation and drainage aqueduct according to claim 5 protection end cap is characterized in that, described fin is by attenuation gradually around the mind-set in the sealing gasket.
7, the negative pressure of irrigation and drainage aqueduct according to claim 1 and 2 protection end cap is characterized in that, the described sealing gasket one side of lid end face dorsad is provided with the radial fin that extends by around the mind-set in the sealing gasket.
8, the negative pressure of irrigation and drainage aqueduct according to claim 1 and 2 protection end cap; it is characterized in that; the end face center of described lid offers the centre pilot hole, and the corresponding pilot hole in described sealing gasket center is provided with location guide, and this location guide and described centre pilot hole are slidingly matched.
9, the negative pressure of irrigation and drainage aqueduct according to claim 1 and 2 protection end cap; it is characterized in that; the end face center of described lid offers the center fixation hole, and the corresponding positioning hole in described sealing gasket center is provided with fixing rod, and described fixing rod is fixedly mounted in the described positioning hole.
10, the negative pressure of irrigation and drainage aqueduct according to claim 1 and 2 protection end cap is characterized in that the attachment portion of described lid is provided with connecting thread or the spinner structure that is connected with aqueduct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920089399XU CN201416727Y (en) | 2009-04-03 | 2009-04-03 | Negative-pressure protective end cover for drainage and irrigation water pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920089399XU CN201416727Y (en) | 2009-04-03 | 2009-04-03 | Negative-pressure protective end cover for drainage and irrigation water pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201416727Y true CN201416727Y (en) | 2010-03-03 |
Family
ID=41793148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920089399XU Expired - Fee Related CN201416727Y (en) | 2009-04-03 | 2009-04-03 | Negative-pressure protective end cover for drainage and irrigation water pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201416727Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110397791A (en) * | 2019-08-07 | 2019-11-01 | 金丽丽 | Buried compound pipeline complex pipeline |
-
2009
- 2009-04-03 CN CN200920089399XU patent/CN201416727Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110397791A (en) * | 2019-08-07 | 2019-11-01 | 金丽丽 | Buried compound pipeline complex pipeline |
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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: 20100303 Termination date: 20130403 |