CN202674688U - Negative-pressure protective end cover of drainage and irrigation water pipeline - Google Patents
Negative-pressure protective end cover of drainage and irrigation water pipeline Download PDFInfo
- Publication number
- CN202674688U CN202674688U CN 201220337197 CN201220337197U CN202674688U CN 202674688 U CN202674688 U CN 202674688U CN 201220337197 CN201220337197 CN 201220337197 CN 201220337197 U CN201220337197 U CN 201220337197U CN 202674688 U CN202674688 U CN 202674688U
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- sealing gasket
- lid
- arc
- arc sealing
- negative
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Abstract
The utility model discloses a negative-pressure protective end cover of a drainage and irrigation water pipeline. A connecting screw is arranged at the center of an arc-shaped sealing gasket in the end cover in a penetrating manner; the head of the connecting screw is matched with one side face of the arc-shaped sealing gasket in a check manner; a rod part of the connecting screw penetrates through the other side face of the arc-shaped sealing gasket, and the extended part of the rod part is fixedly connected with a threaded hole which is correspondingly formed on the end face of the cover body through being screwed by a thread; the arc-shaped sealing gasket is fixed on the cover body; and the cover body and the arc-shaped sealing gasket are matched with each other in a rotation stopping manner through rotation stopping structures which are correspondingly arranged on the cover body and the arc-shaped sealing gasket. Therefore, in a use process of the protective end cover, the arc-shaped sealing gasket is opened towards the interior of the cover body, and when the interior of the cover body is subjected to a pressure, the sealing gasket is tightly adhered to the inner end face of the cover body, and the edge part of the sealing gasket is tightly adhered to the inner wall of a pipe opening of the water drainage pipeline; and when the interior of the cover body is not subjected to a pressure or is subjected to a negative pressure, the arc-shaped sealing gasket is naturally opened, and air is supplemented into the water drainage pipeline through an air vent, so that the inner and outer pressures of the water drainage pipeline are balanced, the aim of protecting the water drainage pipeline is achieved, and furthermore, the arc-shaped sealing gasket can be stably and reliably fixed on the cover body. During the actual use process of the protective end cover, the safety and the reliability are stronger, and the technical performance is more reliable.
Description
Technical field
The utility model relates to irrigation and drainage aqueduct technical field, relates in particular to a kind of negative-pressure protective end cover of irrigation and drainage aqueduct.
Background technique
At present, when implementing the draining irrigation in the hilly country, because drainage pipe is laid on the yo-yo physical features of height, when irrigation is finished motor-pumped well and is quit work, be in the water in the drainage pipe of higher topographical or flow to the physical features lower, thereby so that be in the drainage pipe of physical features higher position negative pressure appears, the end cover that uses at the mouth of pipe of this partial drainage pipeline does not have corresponding breather hole structure, thereby so that the contrast of internal negative pressure and external pressure act on the drainage pipe, so that breaking appears in this partial drainage pipeline easily, must constantly drop into a large amount of manpower and materials and maintain, strengthen maintenance and the user cost of drainage pipe.
Application number is the negative-pressure protective end cover that the Chinese utility model patent of 200920089399.X discloses a kind of irrigation and drainage aqueduct; this negative-pressure protective end cover comprises lid; offer the vent with the internal communication of lid on the end face of lid; the interior edge face of lid is the arc-shaped curved surface of depression outside lid; the arc sealing gasket that has been sticked coincide on the interior edge face of lid; be fixed with the guide rod that from the pilot hole that the end face of lid is offered, passes on the arc sealing gasket; and be equiped with for the jackscrew that guide rod is locked at pilot hole at place, the exterior edge face of lid; so that the arc sealing gasket is fixed on the end face of lid; when end cap inside has negative pressure; but atmospheric pressure can blow down the edge of the elasticity of arc sealing gasket bending, makes atmosphere enter drainage pipe from the space between the inwall of the outward edge of arc sealing gasket and drainage pipe.But because the manufacturing of guide rod and the equal more complicated of linkage structure between lid and the arc sealing gasket, needing that in manufacturing process special processing technology is set realizes, thereby prolonged the manufacturing cycle of whole end cap, improved cost of production.
The model utility content
The purpose of this utility model provides a kind of negative-pressure protective end cover of irrigation and drainage aqueduct, is intended to solve the problem of the linkage structure more complicated of lid and arc sealing gasket in the negative-pressure protective end cover of irrigation and drainage aqueduct in the prior art.
In order to realize above purpose, the technological scheme that the utility model adopts is:
The technological scheme of the negative-pressure protective end cover of irrigation and drainage aqueduct of the present utility model is as follows:
The negative-pressure protective end cover of irrigation and drainage aqueduct; comprise lid and arc sealing gasket; the interior edge face of described lid is the arc-shaped curved surface of depression outside lid; the middle part of arc sealing gasket coincide and is sticked on the interior edge face of lid; it is characterized in that: the arc sealing gasket opens to the direction that deviates from the lid interior edge face; the center portion of described arc sealing gasket is equipped with attachment screw; the head of attachment screw cooperates with a side side block of the dorsad lid interior edge face of arc sealing gasket; the bar section of attachment screw stretches out from the another side of arc sealing gasket; the corresponding tapped hole of offering screws by screw thread and is fixedly connected with on the extension of described bar section and the lid end face; and the arc sealing gasket is fixed on the lid, described lid and arc sealing gasket only screw and close by the corresponding structure of only revolving that arranges on both.
Described only revolve convex with on the interior edge face that structure comprises lid be in described screw hole one side only revolve projection, arc sealing gasket offer towards a side center portion of lid interior edge face with described only revolve that projection cooperates only revolve the hole, describedly only revolve protruding inserting and only revolving in the hole.
The radial cross section of described arc sealing gasket is the crescent section that thickness reduces to the edge gradually from belly.
Described tapped hole is blind hole, and the opening of described tapped hole is on the interior edge face of lid.
Also convex with the contact on the interior edge face of described lid, described contact is evenly distributed on the circumference of lid interior edge face.
Offer air hole on the end face of described lid, described air hole is evenly distributed on the lid.
Described attachment screw is self-tapping screw, and described tapped hole is to be connected the screw extruding and the tapped hole of tapping.
Arc sealing gasket and lid are fixedly connected with by the tapped hole of offering on the end face that revolves the attachment screw established and lid on the arc lid in the utility model; and between lid and arc sealing gasket, be provided with and only revolve structure; thereby simplified linkage structure between arc sealing gasket and the lid; and avoid on the mouth of pipe that end cap is screwed at drainage pipe the time by only revolving structure; relatively rotating between the arc sealing gasket that the frictional force between the mouth of pipe of arc sealing gasket and drainage pipe causes and the lid; thereby so that in use; the arc sealing gasket is the shape of opening to lid portion inside; and when having pressure, lid portion inside is close on the interior edge face of arc of lid; in lid portion inside without pressure or when negative pressure occurring; the arc sealing gasket opens naturally; and then so that the arc sealing gasket can be reliable and stable be fixed on the lid; and the arc sealing gasket can open the balance of finishing drainage pipe and external pressure naturally; the effect stability that the arc sealing gasket is installed at lid is reliable, solved in the prior art problem of the linkage structure more complicated of lid and arc sealing gasket in the negative-pressure protective end cover of irrigation and drainage aqueduct.
Description of drawings
Fig. 1 is embodiment's of the present utility model structural representation;
Fig. 2 is the structural representation of embodiment of the present utility model under reset condition;
Fig. 3 is the structural representation of embodiment of the present utility model under the use state.
Embodiment
The embodiment of the negative-pressure protective end cover of irrigation and drainage aqueduct of the present utility model: as shown in Figure 1 to Figure 3, this end cap is made of lid 1, arc sealing gasket 2 and attachment screw 3.Wherein offer near the air hole 1-1 in interior edge face edge that is in lid 1 on the end face of lid 1, the week that all air hole 1-1 are evenly distributed on the interior edge face of lid 1 makes progress, the interior edge face of lid 1 is the arc-shaped curved surface to lid 1 outer depression, arc sealing gasket 2 coincide and is sticked on the interior edge face of lid 1, and is fixedly connected with by the fixed connection structure that arranges between the two with lid 1.This fixed connection structure comprises the tapped hole 1-2 that offers on the end face of attachment screw 3 that the center position of arc sealing gasket 2 wears and lid 1, wherein attachment screw 3 is self-tapping screw, tapped hole 1-2 is connected screw 3 extruding and the tapped hole of tapping, the head of attachment screw 3 cooperates with a side side block of dorsad lid 1 end face of arc sealing gasket 2, the tail end body of rod of attachment screw 3 stretches out from a side of the interior edge face of the close lid 1 of arc sealing gasket 2, and extension revolves and is located among the described tapped hole 1-2, this tapped hole 1-2 is the unthreaded hole adaptive with described attachment screw 3, and tapped hole 1-2 is blind hole, and the opening of tapped hole 1-2 is on the interior edge face of lid 1.Simultaneously only screw and close by the corresponding structure of only revolving that arranges on both at the end face of lid 1 and arc sealing gasket 2, this side of interior edge face of only revolving the close lid 1 of the arc sealing gasket 2 that only revolves protruding 1-3, arc sealing gasket 2 that is in the relative both sides of described tapped hole 1-2 that is convexly equipped with on the interior edge face that structure comprises lid 1 offer with described only revolve protruding 1-3 cooperate only revolve only revolve hole 2-1, only revolve protruding 1-3 inserting and only revolve 2-1 in the hole described.
The cross section of described arc sealing gasket 2 is the crescent section that thickness reduces to the edge gradually from belly.
Also convex with the contact 1-4 that is between adjacent two air hole 1-1 on the interior edge face of described lid 1, described contact 1-4 is evenly distributed on the circumferential position at air hole 1-1 place on lid 1 end face.
The utility model is when assembling, and arc sealing gasket 2 is coincide is sticked on the interior edge face of lid 1 first, and makes the protruding 1-3 that only revolves on lid 1 interior edge face insert only revolving in the 2-1 of hole on the arc sealing gasket 2; Then arc sealing gasket 2 is fixed on the end face of lid 1 by attachment screw 3; namely finished the assembling of whole end cap; what therefore arc sealing gasket 2 can be reliable and stable in the utility model is fixed on the lid 1; and the effect stability at lid 1 installing arc sealing gasket 2 is reliable, thereby has solved in the prior art problem of lid 1 and the linkage structure more complicated of arc sealing gasket 2 in the negative-pressure protective end cover of irrigation and drainage aqueduct.
The utility model in use, end cap is combined on the mouth of pipe of drainage pipe 4 by the internal thread rotation of processing on its inwall, screw in the process at this, only revolve protruding 1-3 with only revolve can drive that arc sealing gasket 2 overcomes cooperating between the 2-1 of hole and the mouth of pipe sidewall of drainage pipe 4 between frictional force and rotate, thereby guaranteed the integrity of whole end cap in assembly process.When negative pressure appears in the inside of lid 1, atmosphere can be oppressed by vent the edge bending of arc sealing gasket 2, thereby so that in the atmosphere after the edge bending of gas by arc sealing gasket 2, appear at the gap between the internal wall of pipe orifice of the edge of arc sealing gasket 2 and drainage pipe 4 and enter in the drainage pipe 4; When the mouth of pipe place hydraulic pressure of drainage pipe 4 or air pressure during greater than atmospheric pressure, hydraulic pressure or air pressure can push back its closed state again with the edge of arc sealing gasket 2, and in the process that the edge of arc sealing gasket 2 launches, contact 1-4 can shorten the edge development rate of arc sealing gasket 2, thereby improves closing velocity of the present utility model; And because the top of contact 1-4 is lower than the residing plane, outer of the interior edge face of lid 1, thereby so that can not affecting the sealing at the interior edge face edge of the edge of arc sealing gasket 2 and lid 1, contact 1-4 do not fit, therefore so that the closed process of whole end cap is fast reliable.
The utility model convexes with several along the axially extended anti-skidding rib 1-5 of lid at the outer circumferential face of lid 1, this anti-skidding rib 1-5 interval is evenly distributed on the lid outer circumferential face, thereby increase the frictional force between the outer circumferential face of user's palm and lid by anti-skidding rib, needed power when reducing the lid installation, the installation difficulty of reduction lid; Near the edge of the exterior edge face of lid, convex with several columnar projections 1-6; these columnar projections 1-6 is evenly distributed on the circumference of lid exterior edge face; thereby so that when stacking this negative pressure protective cover; the columnar projections mutually radially spacing cooperation of adjacent two lids by being convexly equipped with on lower floor's lid; thereby reduced the stacking difficulty of negative pressure protective cover; and guaranteed the stability of negative pressure protective cover after stacking, and then be convenient to negative pressure and protect this transportation, storage and maintenance.
In the above-described embodiments, only revolve and be raised with two, and relatively be distributed in the both sides of lid interior edge face upper screwed hole, in other embodiments, only revolve projection and also can be one or more than two, on the corresponding arc sealing gasket only revolve the hole and only to revolve projection corresponding one by one.
In the above-described embodiments, attachment screw is self-tapping screw, tapped hole is to be connected the screw extruding and the tapped hole of tapping, in other embodiments, attachment screw also can be plain screw, corresponding, tapped hole is the tapped hole that processes by chasing bar, or offer inside and outside identical through hole at the end face of lid, realize fixing of arc sealing gasket and lid by the T shape projection that is wholely set on the arc sealing gasket.
In the above-described embodiments, only revolving structure consists of by only revolving projection and only revolving the hole, in other embodiments, only revolve structure also can for be fixedly connected with a pair of shelves that only revolving of arc sealing gasket and lid be oppositely arranged on screw or arc sealing gasket and the lid end face along etc., these only revolve structure and are the technological means that those skilled in the art habitually practise, and therefore repeat no more.
In the above-described embodiments, lid is fastened on by coaxial threaded on the mouth of pipe of transfer tube or waste pipe, and in other embodiments, coaxial threaded connects and also can replace with rotating hanging structure, jackscrew.
Claims (7)
1. the negative-pressure protective end cover of irrigation and drainage aqueduct; comprise lid and arc sealing gasket; the interior edge face of described lid is the arc-shaped curved surface of depression outside lid; the middle part of arc sealing gasket coincide and is sticked on the interior edge face of lid; it is characterized in that: the arc sealing gasket opens to the direction that deviates from the lid interior edge face; the center portion of described arc sealing gasket is equipped with attachment screw; the head of attachment screw cooperates with a side side block of the dorsad lid interior edge face of arc sealing gasket; the bar section of attachment screw stretches out from the another side of arc sealing gasket; the corresponding tapped hole of offering screws by screw thread and is fixedly connected with on the extension of described bar section and the lid end face; and the arc sealing gasket is fixed on the lid, described lid and arc sealing gasket only screw and close by the corresponding structure of only revolving that arranges on both.
2. the negative-pressure protective end cover of irrigation and drainage aqueduct according to claim 1; it is characterized in that: described only revolve convex with on the interior edge face that structure comprises lid be in described screw hole one side only revolve projection, arc sealing gasket offer towards a side center portion of lid interior edge face with described only revolve that projection cooperates only revolve the hole, describedly only revolve protruding inserting and only revolving in the hole.
3. the negative-pressure protective end cover of irrigation and drainage aqueduct according to claim 1, it is characterized in that: the radial cross section of described arc sealing gasket is the crescent section that thickness reduces to the edge gradually from belly.
4. according to claim 1 and 2 or the negative-pressure protective end cover of 3 described irrigation and drainage aqueducts, it is characterized in that: described tapped hole is blind hole, and the opening of described tapped hole is on the interior edge face of lid.
5. according to claim 1 and 2 or the negative-pressure protective end cover of 3 described irrigation and drainage aqueducts, it is characterized in that: also convex with the contact on the interior edge face of described lid, described contact is evenly distributed on the circumference of lid interior edge face.
6. according to claim 1 and 2 or the negative-pressure protective end cover of 3 described irrigation and drainage aqueducts, it is characterized in that: offer air hole on the end face of described lid, described air hole is evenly distributed on the lid.
7. according to claim 1 and 2 or the negative-pressure protective end cover of 3 described irrigation and drainage aqueducts, it is characterized in that: described attachment screw is self-tapping screw, and described tapped hole is to be connected the screw extruding and the tapped hole of tapping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220337197 CN202674688U (en) | 2012-07-12 | 2012-07-12 | Negative-pressure protective end cover of drainage and irrigation water pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220337197 CN202674688U (en) | 2012-07-12 | 2012-07-12 | Negative-pressure protective end cover of drainage and irrigation water pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202674688U true CN202674688U (en) | 2013-01-16 |
Family
ID=47495594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220337197 Expired - Fee Related CN202674688U (en) | 2012-07-12 | 2012-07-12 | Negative-pressure protective end cover of drainage and irrigation water pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202674688U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953843A (en) * | 2018-09-13 | 2018-12-07 | 德清恒升管件有限公司 | A kind of protective cover of pipe joint screw thread |
-
2012
- 2012-07-12 CN CN 201220337197 patent/CN202674688U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108953843A (en) * | 2018-09-13 | 2018-12-07 | 德清恒升管件有限公司 | A kind of protective cover of pipe joint screw thread |
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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: 20130116 Termination date: 20140712 |
|
| EXPY | Termination of patent right or utility model |