CN221034429U

CN221034429U - Pipeline type backflow preventer

Info

Publication number: CN221034429U
Application number: CN202323014662.8U
Authority: CN
Inventors: 陶庆彬; 王筱; 肖婷
Original assignee: Hubei Dingju Renhe Environmental Technology Co ltd
Current assignee: Hubei Dingju Renhe Environmental Technology Co ltd
Priority date: 2023-11-08
Filing date: 2023-11-08
Publication date: 2024-05-28
Anticipated expiration: 2033-11-08

Abstract

The utility model relates to a pipeline type backflow preventer, which comprises two original pipelines, wherein a rubber valve body component used for plugging or a flange type rubber valve body component used for plugging is arranged between the two original pipelines; the plug-in type rubber valve body assembly comprises a first sleeve inserted between two original pipelines, the inner wall of the first sleeve is fixedly sleeved with a straight line side, the top end of the inner wall of the straight line side is fixedly connected with a rubber valve body, and the lower side of the rubber valve body is integrally provided with an eccentric side. This pipeline type anti-backflow device contacts with the eccentric side when flowing from first sleeve pipe or second sleeve pipe through rivers, and the bottom bellying can rise upwards, thereby the gap grow gets up with the eccentric side upwards perk under the promotion of rivers to realize the flow of rivers, and when low reaches water level is higher than the upper reaches, eccentric side downside bellying then can laminate at sharp side inner wall surface under the water pressure effect, thereby can place the backward flow of water level.

Description

Pipeline type backflow preventer

Technical Field

The utility model relates to the technical field of municipal administration and water conservancy, in particular to a pipeline type backflow preventer.

Background

At present, in order to prevent urban waterlogging, a drainage pipeline is usually arranged under the urban ground so as to drain rainwater in time.

At present, the hydraulic type downward opening weir gate, the duckbill valve and other devices are adopted for the pipeline with the backflow prevention requirement, the hydraulic type downward opening weir gate has higher manufacturing cost, if the hydraulic type downward opening weir gate is simply used for the pipeline to prevent backflow, the hydraulic type downward opening weir gate is wasteful, the duckbill valve has low manufacturing cost and has a certain backflow prevention function, but the function of the hydraulic type downward opening weir gate is limited by the service life, the duckbill valve is easy to cause the duckbill valve to be unable to be completely closed in the use process, the backflow prevention function is invalid, and the production requirement cannot be met, so the pipeline type backflow prevention device is provided to solve the problems in the prior art.

Disclosure of utility model

Aiming at the defects of the prior art, the utility model provides a pipeline type backflow preventer, which has the advantages of lower manufacturing cost, convenient installation, obvious backflow preventing effect due to the unique structure, and the like, and solves the problems that the pipeline with backflow preventing requirements is mainly provided with hydraulic downward opening type weir gate, duckbill valve and other devices, the hydraulic downward opening type weir gate has higher manufacturing cost, if the hydraulic downward opening type weir gate is simply used for the backflow preventing function of the pipeline, waste is caused, the manufacturing cost of the duckbill valve is low, the duckbill valve has a certain backflow preventing effect, the function is limited by the service life, the duckbill valve is easy to be closed completely in the use process, and the backflow preventing effect is invalid.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the pipeline type backflow preventer comprises two original pipelines, wherein a plug-in type rubber valve body assembly or a flange type rubber valve body assembly is arranged between the two original pipelines.

The plug-in type rubber valve body assembly comprises a first sleeve inserted between two original pipelines, the inner wall of the first sleeve is fixedly sleeved with a straight side, the top end of the inner wall of the straight side is fixedly connected with a rubber valve body, the lower side of the rubber valve body is integrally provided with an eccentric side, the right side of the rubber valve body is fixedly connected with a tail ring, and the right side of the eccentric side is integrally provided with a protruding portion.

The flange type rubber valve body assembly comprises flanges which are connected to opposite sides of two original pipelines through bolts, two flange inner walls are fixedly connected with second sleeves, straight line sides are fixedly sleeved on the second sleeve inner walls, rubber valve bodies are fixedly connected to the top ends of the straight line side inner walls, eccentric sides are integrally arranged on the lower sides of the rubber valve bodies, tail rings are fixedly connected to the right sides of the rubber valve bodies, and protruding portions are integrally arranged on the right sides of the eccentric sides.

Further, a filling material is filled between the left side and the right side of the first sleeve and the original pipeline, and the filling material is a mixture of cotton and hemp and joint filling material.

Further, the lower side of the eccentric side is attached to the inner bottom wall of the straight side, and the eccentric side and the straight side are connected in a separable manner.

Further, the outside of first sleeve pipe and second sleeve pipe is the stainless steel sleeve pipe, the tail ring surface is circular structure, and tail ring outer wall and straight line side inner chamber laminating.

Further, be welded fastening between second sleeve pipe and the flange, rubber valve body one side is pointed cone structure, and the rubber valve body left side is the tail ring that seal structure right side set up an organic whole is open structure.

Further, the rubber valve body is integrally made of rubber, and a small gap is formed between the protruding portion and the inner wall of the straight line side.

Further, the diameters of the left side and the right side of the first sleeve are larger than the outer diameter of the original pipeline.

Compared with the prior art, the utility model provides a pipeline type backflow preventer, which has the following beneficial effects:

1. This pipeline type anti-backflow device contacts with the eccentric side when flowing from first sleeve pipe or second sleeve pipe through rivers, and the bottom bellying can rise upwards, thereby the gap grow gets up with the eccentric side upwards perk under the promotion of rivers to realize the flow of rivers, and when low reaches water level is higher than the upper reaches, eccentric side downside bellying then can laminate at sharp side inner wall surface under the water pressure effect, thereby can place the backward flow of water level.

2. This pipeline type anti-backflow device fills through between first sleeve pipe left and right sides filler and the original pipeline, can effectually isolate rivers from flowing from the gap, and reach sealed effect, solved to having the pipeline that anti-backflow required and adopting equipment such as hydraulic drive formula down opening the weir gate, duckbill valve, hydraulic drive down opening weir gate cost is higher, if just be used for the pipeline to prevent flowing backward the function, then cause extravagant, to the duckbill valve, its low in cost has certain anti-backflow effect, but its function receives the service life restriction, and in-process easily leads to the duckbill valve unable complete closure, makes the problem of preventing flowing backward the effect inefficacy.

Drawings

FIG. 1 is a schematic diagram of a first embodiment of the present utility model;

FIG. 2 is a cross-sectional view of a first sleeve according to a first embodiment of the present utility model;

FIG. 3 is a schematic structural diagram of a second embodiment of the present utility model;

Fig. 4 is a structural cross-sectional view of a second sleeve according to a second embodiment of the present utility model.

In the figure: 1 original pipeline, 2 rubber valve body, 3 straight line sides, 4 eccentric sides, 5 first sleeve pipe, 6 tail ring, 7 flange, 8 protruding part, 9 filler, 10 second sleeve pipe.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Embodiment one:

Referring to fig. 1-2, a pipeline type backflow preventer in this embodiment includes two original pipelines 1, a plug-in type rubber valve body assembly is disposed between the two original pipelines 1, the plug-in type rubber valve body assembly includes a first sleeve 5 inserted between the two original pipelines 1, a straight line side 3 is fixedly sleeved on an inner wall of the first sleeve 5, a rubber valve body 2 is fixedly connected to a top end of the inner wall of the straight line side 3, an eccentric side 4 is integrally disposed on a lower side of the rubber valve body 2, a tail ring 6 is fixedly connected to a right side of the rubber valve body 2, and a protruding portion 8 is integrally disposed on a right side of the eccentric side 4.

Wherein, the packing material 9 has been filled between 5 left and right sides of first sleeve pipe and the original pipeline 1, the packing material 9 is cotton-flax and joint compound's mixture, the laminating of the interior bottom wall in eccentric side 4 and the straight line side 3, and be separable connection between eccentric side 4 and the straight line side 3, the outside of 5 is the stainless steel sleeve pipe of first sleeve pipe, the tail ring 6 surface is circular structure, and outer wall and the laminating of straight line side 3 inner chamber, rubber valve body 2 one side is the pointed cone structure, and the tail ring 6 that rubber valve body 2 left side is integrative setting in seal structure right side is open structure, rubber valve body 2 wholly is rubber, there is less gap between bellying 8 and the straight line side 3 inner wall, the diameter of the left and right sides of first sleeve pipe 5 needs to be greater than original pipeline 1 outside diameter.

It should be noted that, filling material 9 cotton and hemp and joint filling material fill, and the joint filling material has cement, quartz sand etc. to mix, effectually to the gap department reach sealed effect, at ordinary times the upstream water level is higher than the downstream water level during the bellying 8 then can the water flow the gap that produces with its eccentric side 4 and bellying 8 upwards to form the flow form, and when the downstream water level is higher than the upstream water level, then utilize the water pressure of water level to closely with rubber valve body 2 outside and straight line side 3 inner wall laminating, thereby reach the effect of backward flowing.

Embodiment two:

Referring to fig. 3-4, a pipeline type backflow preventer in this embodiment includes two original pipelines 1, a flange type rubber valve body assembly is disposed between the two original pipelines 1, the flange type rubber valve body assembly includes a flange 7 connected to opposite sides of the two original pipelines 1 by bolts, inner walls of the two flanges 7 are fixedly connected with a second sleeve 10, inner walls of the second sleeve 10 are fixedly sleeved with a straight line side 3, top ends of inner walls of the straight line side 3 are fixedly connected with a rubber valve body 2, an eccentric side 4 is integrally disposed on a lower side of the rubber valve body 2, a tail ring 6 is fixedly connected on a right side of the rubber valve body 2, and a protruding portion 8 is integrally disposed on a right side of the eccentric side 4.

Wherein, the laminating of wall in eccentric side 4 downside and the straight line side 3, and be separable connection between eccentric side 4 and the straight line side 3, the outside stainless steel sleeve pipe that is of second sleeve pipe 10, tail ring 6 surface is circular structure, and outer wall and straight line side 3 inner chamber laminating, be welded fastening between second sleeve pipe 10 and the flange 7, rubber valve body 2 one side is pointed cone structure, and rubber valve body 2 left side is the tail ring 6 that seal structure right side an organic whole set up is open structure, rubber valve body 2 wholly is rubber, there is less gap between bellying 8 and the straight line side 3 inner wall.

It should be noted that, when the original pipeline 1 adopts the PE or UPVC pipeline as well, the flange 7 is directly welded or glued, and then the flange is in butt joint with the second sleeve 10, at ordinary times, the upstream water level is higher than the downstream water level, the gap generated by the water flowing of the protruding part 8 moves the eccentric side 4 and the protruding part 8 upwards, so as to form a flowing form, and when the downstream water level is higher than the upstream water level, the outer side of the rubber valve body 2 is tightly attached to the inner wall of the straight side 3 by utilizing the water pressure of the water level, so as to achieve the backflow effect.

The working principle of the embodiment is as follows:

According to the socket connection between the first sleeve 5 and the original pipeline 1 or the bolt connection between the connecting flange 7 on the outer side of the second sleeve 10 and other original pipelines 1, etc., the socket connection between the first sleeve 5 and the original pipeline 1 can utilize the filling material 9 to improve the sealing performance, avoid the occurrence of gaps, and cause the leakage condition, when the upstream water level is higher than the downstream water level, the water flow moves from the original pipeline 1 to the straight line side 3 in the first sleeve 5, the water flow firstly collides with the eccentric side 4 on the lower side of the rubber valve body 2 in the straight line side 3 and the bulge 8, and forms gaps and gradually expands as the water flow continuously presses the bottom of the bulge 8 until the bulge 8 and the eccentric side 4 are completely separated from the inner bottom of the straight line side 3, the water flow passes through and is discharged from the other side, and when the downstream water level is higher than the upstream water level, the water pressure generated by the water level can be directly discharged into the rubber valve body 2, because the left side of the rubber valve body 2 is a sealing structure and the bulge 8 is tightly attached to the inner bottom surface of the straight line side 3 due to the water pressure effect, thus the reverse pouring effect is avoided.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a pipeline formula anti-backflow ware, includes two original pipelines (1), its characterized in that: a plug-in type rubber valve body assembly or a flange type rubber valve body assembly is arranged between the two original pipelines (1);

The plug-in type rubber valve body assembly comprises a first sleeve (5) which is plugged between two original pipelines (1), a straight line side (3) is fixedly sleeved on the inner wall of the first sleeve (5), the top end of the inner wall of the straight line side (3) is fixedly connected with a rubber valve body (2), an eccentric side (4) is integrally arranged on the lower side of the rubber valve body (2), a tail ring (6) is fixedly connected on the right side of the rubber valve body (2), and a protruding part (8) is integrally arranged on the right side of the eccentric side (4);

The flange type rubber valve body assembly comprises flanges (7) which are connected to opposite sides of two original pipelines (1) through bolts, two second sleeves (10) are fixedly connected to the inner walls of the flanges (7), straight line sides (3) are fixedly sleeved on the inner walls of the second sleeves (10), rubber valve bodies (2) are fixedly connected to the top ends of the inner walls of the straight line sides (3), eccentric sides (4) are integrally arranged on the lower sides of the rubber valve bodies (2), tail rings (6) are fixedly connected to the right sides of the rubber valve bodies (2), and protruding portions (8) are integrally arranged on the right sides of the eccentric sides (4).

2. A plumbing type anti-backflow device as defined in claim 1, wherein: and a filling material (9) is filled between the left side and the right side of the first sleeve (5) and the original pipeline (1), and the filling material (9) is a mixture of cotton and hemp and joint filling material.

3. A plumbing type anti-backflow device as defined in claim 1, wherein: the lower side of the eccentric side (4) is attached to the inner bottom wall of the straight side (3), and the eccentric side (4) is detachably connected with the straight side (3).

4. A plumbing type anti-backflow device as defined in claim 1, wherein: the outer parts of the first sleeve (5) and the second sleeve (10) are stainless steel sleeves, the surface of the tail ring (6) is of a circular structure, and the outer wall of the tail ring (6) is attached to the inner cavity of the straight side (3).

5. A plumbing type anti-backflow device as defined in claim 1, wherein: the second sleeve (10) is welded and fixed with the flange (7), one side of the rubber valve body (2) is of a pointed cone structure, and the left side of the rubber valve body (2) is of an opening structure, and the tail ring (6) is integrally arranged on the right side of the sealing structure.

6. A plumbing type anti-backflow device as defined in claim 1, wherein: the rubber valve body (2) is integrally made of rubber, and a small gap is formed between the protruding portion (8) and the inner wall of the straight line side (3).

7. A plumbing type anti-backflow device as defined in claim 1, wherein: the diameters of the left side and the right side of the first sleeve (5) are larger than the outer side diameter of the original pipeline (1).