Sewage jacking pipe

Abstract

The invention relates to the technical field of underground pipelines, and discloses a sewage jacking pipe which comprises a jacking pipe body, one end of the jacking pipe body is a sealed end, the other end of the jacking pipe body is a connecting end, and double sealing rings are arranged on the pipe outer wall of the sealed end. The inner pipe wall of the connecting end is provided with a taper matched with the outer pipe wall. The sealing device has the advantages of good sealing performance and simple structure.

Description

Technical Field

[0001] The invention relates to the technical field of underground pipelines, and in particular to a sewage jacking pipe. Background Art

[0002] Pipe jacking is a pipe used in trenchless construction methods. Trenchless construction methods are a pipe burial construction technology that does not involve excavation or requires minimal excavation. It is also called pipe jacking construction and is mainly used to lay sewage pipes or other underground pipelines. It uses jacking equipment to push the pipe from the starting point into the ground, splicing it into sections to pass through obstacles (such as roads, buildings, rivers, etc.) and finally reach the target location. This technology avoids the impact of traditional excavation construction on the ground environment and traffic, and is suitable for densely populated urban areas or complex geological conditions.

[0003] Chinese patent document CN220505980U discloses a jacking pipe, including a plug-in pipe, a unit pipe and a receiving pipe connected in sequence, the plug-in pipe is plugged into the receiving pipe of the adjacent jacking pipe, the receiving pipe is provided with a limiting mechanism, the limiting mechanism is partially plugged into the plug-in pipe, a jacking mechanism and a plurality of sealing rings are provided around the plug-in pipe, one end of the jacking mechanism is located on the moving path of the limiting mechanism, and the other end is located at the bottom of the sealing ring, and the limiting mechanism forces the sealing ring to move toward the receiving pipe through the jacking mechanism. The limiting mechanism of the present application can limit the plug-in pipe from being separated from the receiving pipe, and at the same time, the limiting mechanism drives the jacking mechanism to move, thereby forcing the sealing ring to be squeezed and deformed to fill the gap between the plug-in pipe and the receiving pipe.

[0004] Chinese patent document CN210318500U discloses a sealing ring at the connection of a pipe jacking machine, including a front shield and a rear shield, a cutter disc is arranged in front of the front shield, the front end outer diameter of the rear shield is smaller than the inner diameter of the front shield, and the front end of the rear shield is arranged inside the front shield. It is characterized in that two groups of sealing structures are arranged from front to back on the outer circumferential surface of the rear shield; the first sealing structure located at the front includes a first groove arranged on the outer circumferential surface of the rear shield, and a first sealing ring is arranged in the first groove; the second sealing structure located at the rear includes a second groove arranged on the outer circumferential surface of the rear shield, and a second sealing ring is arranged in the second groove; the first sealing ring includes a base layer and sealing teeth, the base layer is arranged in the first groove, and the sealing teeth protrude from the first groove.

[0005] Although the joints of the current jacking pipes are sealed by double sealing rings, water leakage is prone to occur between the double sealing rings and the jacking pipes after the jacking pipes are installed; and although the sealing performance of the jacking pipes is improved by setting a limiting mechanism and a jacking mechanism, the overall structure is complex. Summary of the invention

[0006] In order to solve the technical problems of insufficient sealing and complex sealing structure at the top pipe connection, the present invention provides a sewage top pipe, including a top pipe body, one end of the top pipe body is a sealing end, and the other end is a connecting end, and a double sealing ring is arranged on the outer wall of the pipe of the sealing end. It is characterized in that the outer wall of the pipe of the sealing end and the double sealing rings are both arranged with a certain taper, and the inner wall of the pipe of the connecting end is arranged with a taper matching with the outer wall of the pipe.

[0007] In order to facilitate quick installation while ensuring sealing, the sealing end is provided with multiple gradient cones in sequence from the opening to the inside.

[0008] Preferably, a first cone, a double sealing ring installation platform and a conical protrusion are arranged in sequence from the opening to the inside on the outer wall of the tube at the sealing end; a second cone, a double sealing ring extrusion platform and a connecting groove are arranged in sequence from the inside to the opening on the inner wall of the tube at the connecting end, the first cone cooperates with the second cone, the double sealing ring installation platform cooperates with the double sealing ring extrusion platform, and the conical protrusion cooperates with the connecting groove.

[0009] Preferably, the double sealing ring comprises a circular sealing ring and a conical sealing ring, the circular sealing ring is arranged close to the opening of the sealing end, and the conical sealing ring is arranged away from the opening of the sealing end.

[0010] In order to further improve the sealing performance, a plurality of sealing protrusions are arranged on the conical sealing ring, and when the double sealing ring mounting platform cooperates with the double sealing ring extrusion platform, the sealing protrusion close to the conical protrusion cooperates with the inclined surface of the conical protrusion to seal.

[0011] In order to facilitate the installation and fixation of the double sealing rings, two sealing ring installation grooves are arranged on the double sealing ring installation platform.

[0012] Preferably, the outermost end of the sealing end and the innermost end of the connecting end are connected by a snap-fit ​​connection.

[0013] The present invention has the following beneficial effects: 1. In the prior art, the double sealing ring structure will cause the sealing ring and the top pipe to be misaligned and a gap will appear when the top pipe moves during installation, which will lead to sewage leakage. The top pipe of the present invention forms a multi-level seal through a multi-gradient conical structure and double sealing rings, which ensures convenient and quick connection while utilizing the mutual extrusion of the inner and outer walls to form a tight waterproof seal between the sealing ring and the top pipe. The sealing performance of the present invention is excellent. The first cone and the circular sealing ring form the first line of protection. During the installation process, the conical sealing ring moves when the top pipe and the top pipe are connected, and the second line of protection is formed by the inclination of the conical sealing ring and the conical protrusion, forming a double sealing guarantee.

[0014] 2. The structure of the present invention is simple, and the top pipe can be directly inserted to complete the docking. One end is fixed by a buckle, and the other end is connected by a conical protrusion and a connecting groove, which is convenient, fast and firm. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the sealing end of the sewage top pipe of the present invention; Figure 2 It is a schematic diagram of the sewage top pipe connection section of the present invention. DETAILED DESCRIPTION

[0016] The following is further described in detail through specific implementation methods: The figure marks in the drawings of the specification include: sealing end 1, first cone 101, double sealing ring installation platform 102, conical protrusion 103, inclined surface 104, connecting end 2, second cone 201, double sealing ring extrusion platform 202, connecting groove 203, circular sealing ring 3, conical sealing ring 4, sealing ring installation groove 5, short sealing protrusion 6, long sealing protrusion 7, conical buckle 8, card groove 9, opening 10. Example 1

[0017] like Figure 1 and 2 As shown, a sewage jacking pipe, one end of the jacking pipe body is a sealing end 1, and the other end is a connecting end 2. The outer wall of the sealing end 1 is provided with a double sealing ring. The outer wall of the sealing end 1 and the double sealing ring form a multi-gradient cone from the opening 10 to the inside. The inner wall of the connecting end 2 is provided with a cone matching the outer wall of the pipe. The sewage jacking pipes are connected to each other to form a sewage pipe.

[0018] A first cone 101, a double sealing ring installation platform 102 and a conical protrusion 103 are sequentially arranged on the outer wall of the tube of the sealing end 1 from the opening 10 to the inside; a second cone 201, a double sealing ring extrusion platform 202 and a connecting groove 203 are sequentially arranged on the inner wall of the tube of the connecting end 2 from the inside to the opening 10, the first cone 101 cooperates with the second cone 201, the double sealing ring installation platform 102 cooperates with the double sealing ring extrusion platform 202, and the conical protrusion 103 cooperates with the connecting groove 203.

[0019] The double sealing ring includes a circular sealing ring 3 and a conical sealing ring 4 . The circular sealing ring 3 is arranged close to the opening 10 of the sealing end 1 , and the conical sealing ring 4 is arranged away from the opening 10 of the sealing end 1 .

[0020] Two sealing ring installation grooves 5 are provided on the double sealing ring installation platform 102 , and the circular sealing ring 3 and the conical sealing ring 4 are installed in the sealing ring installation grooves 5 .

[0021] Three sealing protrusions are arranged on the conical sealing ring 4, which are a short sealing protrusion 6, a short sealing protrusion 6 and a long sealing protrusion 7 inward from the opening 10 of the sealing end 1. When the double sealing ring mounting platform 102 cooperates with the double sealing ring extrusion platform 202, the long sealing protrusion 7 close to the conical protrusion 103 is squeezed and tilted, and cooperates with the inclined surface 104 of the conical protrusion 103 to seal.

[0022] A conical buckle 8 is disposed at the outermost end of the sealing end 1 , and a clamping groove 9 is disposed at the innermost end of the connecting end 2 . The conical buckle 8 is connected and fixed to the clamping groove 9 .

[0023] The above is only an embodiment of the present invention. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the invention before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A sewage jacking pipe, comprising a jacking pipe body, one end of the jacking pipe body being a sealing end (1), and the other end being a connecting end (2), a double sealing ring being arranged on the outer wall of the sealing end (1), characterized in that: The outer wall of the tube and the double sealing rings of the sealing end (1) are both provided with a certain taper, and the inner wall of the tube of the connecting end (2) is provided with a taper matching the outer wall of the tube.

2. The sewage jacking pipe according to claim 1, characterized in that: The sealing end (1) is provided with multiple gradient tapers in sequence from the opening (10) inwards.

3. The sewage jacking pipe according to claim 2, characterized in that: A first cone (101), a double sealing ring installation platform (102) and a conical protrusion (103) are sequentially arranged on the outer wall of the tube of the sealing end (1) from the opening (10) to the inside; a second cone (201), a double sealing ring extrusion platform (202) and a connecting groove (203) are sequentially arranged on the inner wall of the tube of the connecting end (2) from the inside to the opening (10), the first cone (101) cooperates with the second cone (201), the double sealing ring installation platform (102) cooperates with the double sealing ring extrusion platform (202), and the conical protrusion (103) cooperates with the connecting groove (203).

4. The sewage jacking pipe according to claim 3, characterized in that: The double sealing ring comprises a circular sealing ring (3) and a conical sealing ring (4); the circular sealing ring (3) is arranged close to the opening (10) of the sealing end (1), and the conical sealing ring (4) is arranged away from the opening (10) of the sealing end (1).

5. The sewage jacking pipe according to claim 3 or 4, characterized in that: A plurality of sealing protrusions are provided on the conical sealing ring (4), and when the double sealing ring mounting platform (102) cooperates with the double sealing ring extrusion platform (202), the sealing protrusion close to the conical protrusion (103) cooperates with the inclined surface (104) of the conical protrusion (103) to seal.

6. The sewage jacking pipe according to claim 5, characterized in that: Two sealing ring installation grooves (5) are provided on the double sealing ring installation platform (102).

7. The sewage jacking pipe according to claim 1, 2, 3, 4 or 6, characterized in that: The outermost end of the sealing end (1) and the innermost end of the connecting end (2) are connected via a buckle.

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