CN102518199B - Hermetic connecting method for bell mouth of plastic inspection well - Google Patents

Abstract

The invention relates to a sealing connection method for plastic inspection well sockets, in particular to a sealing connection method for plastic inspection well sockets suitable for different types of plastic drainage pipes, and belongs to the field of municipal engineering. The method of the invention is to firstly insert the socket into the hole of the well base, weld the socket on the well base by hot-melt welding, then insert the plastic pipe with the same port into the socket of the socket, and fill the socket with sealing packing Put the sealing ring into the gap between the socket and the plastic pipe, and finally seal the gap between the socket and the plastic pipe with a hot-melt sealing tape. The invention has good connection flexibility, high connection strength, good reliability and easy guarantee of sealing performance. The socket of the socket is an inner cone structure, which has good socketability, convenient socket and strong adaptability, and can meet the connection of different types of plastic pipes of the same specification.

Description

A sealing connection method for a plastic inspection well socket

technical field

The invention relates to a sealing connection method for plastic inspection well sockets, in particular to a sealing connection method for plastic inspection well sockets suitable for different types of plastic drainage pipes, and belongs to the field of municipal engineering.

Background technique

Inspection wells are vertical shafts built at regular intervals for rainwater and sewage discharge pipes to connect pipelines with different diameters, directions and heights. They are mainly used by maintenance workers to regularly inspect and dredge pipes, It is one of the underground infrastructures of urban roads to prevent sludge and foreign matter and prevent pipeline blockage. Due to the light weight and corrosion resistance of plastic drainage pipes and plastic inspection wells, the rigidity of pipe rings can be designed according to needs, the joints are well sealed, and there is no leakage, which can effectively prevent groundwater pollution, and the construction speed, hydraulic conditions, and cost performance are excellent. It is used in cement drainage pipes and lime-sand brick inspection wells, so it is widely used in rainwater drainage systems such as municipal roads and construction areas. The plastic inspection well socket is a fitting for the inspection well to connect pipelines of different diameters, directions, and heights. It must be connected to the well base of the inspection well and to the plastic pipe. Most of the connection between the socket and the well seat of the inspection well is an integral forming structure and a flange connection structure. The connection between the socket and the plastic pipe has a one-way socket elastic seal connection, a two-way socket elastic seal connection, a seal connection at the socket, a socket electric fusion welding connection, a hot-melt butt welding connection, a V-welding connection, a thermal Shrink sleeve connection, electric heating belt connection and flange connection. Different types of plastic pipes such as double-wall corrugated pipe, three-layer sandwich pipe, annular ribbed pipe, wound double flat wall and wound spiral pipe have the same specifications, often have different socket outer diameters, and the error is large. In order to adapt the socket of the same specification to different types of plastic pipes, reduce construction troubles, improve work efficiency, and reduce construction costs, it is necessary to design and invent a plastic inspection well socket connection method that can adapt to different types of plastic drainage pipes.

Contents of the invention

The object of the present invention is to provide a sealing connection method for plastic inspection well sockets that can adapt to different types of plastic drainage pipes.

The technical solution of the present invention is: a sealing connection method for plastic inspection well sockets, first insert the socket 2 into the hole of the well base 1, weld the socket 2 on the well base 1 by hot-melt welding, and then connect the port The flat plastic tube 6 is inserted into the socket of the socket 2, the gap between the socket 2 and the plastic tube 6 is filled with sealing packing 3, the sealing ring 4 is installed, and finally the socket 2 and the socket 2 are sealed with a hot-melt sealing tape 5. The gap between the plastic pipes 6.

The gap between the socket 2 and the plastic pipe 6 is 5-15mm.

The sealing adopts the conical surface of the socket 2, the sealing packing 3, the sealing ring 4 and the hot-melt sealing tape 5 to perform four-stage sealing. The linear seal between the end face of the plastic pipe and the conical surface of the socket is the first-level seal, the packing is the second-level seal, the sealing ring is the third-level seal, and the hot-melt sealing tape is the fourth-level seal. The sealing packing 3 is a flexible sealing packing material, including corrosion-resistant asbestos rope, asphalt hemp silk, polystyrene board, polyvinyl chloride foamed plastic board and viscous solid-fluid materials.

The socket 2 and the well base 1 are connected by socket hot-melt welding.

The socket 2 and the well base 1 are welded by socket heat fusion, the sealing packing 3 is placed between the socket 2 and the plastic pipe 6, and the sealing ring 4 is used for the sealing packing 3 to be filled and placed between the socket 2 and the plastic pipe 6 The plugging and sealing, the hot-melt sealing tape 5 is hot-melt welded with the socket 2 and the plastic pipe 6 to further ensure the sealing between the socket 2 and the plastic pipe 6, and at the same time improve the connection strength between the socket 2 and the plastic pipe 6 and reliability.

When used in rainwater or discharge pipes with low sealing requirements, the first or second seal can be used to ensure the sealing of the socket connection; when used in sewage or discharge pipes with high sealing requirements, third or fourth seals can be used , to ensure the sealing reliability of the socket connection.

The beneficial effects of the utility model are:

(1) The socket and the well seat of the inspection well are welded by socket hot-melt welding, which has good connection flexibility, high connection strength, good reliability and easy guarantee of sealing;

(2) The socket of the socket is an inner cone structure, which has good socketability, convenient socket and strong adaptability, and can meet the connection of different types of plastic pipes of the same specification;

(3) The sealing packing adopts flexible materials such as corrosion-resistant asbestos rope, which has good packing performance and plays a certain sealing role at the same time;

(4) Choose sealing rings with different section diameters according to the socket gaps of different types of plastic pipes to ensure the sealing effect;

(5) Hot-melt sealing tape welding not only ensures the sealing, but also greatly improves the strength of the socket connection;

(6) The connection between the plastic pipe and the socket is flexible.

Description of drawings

Fig. 1 is a structural representation of the present invention;

The labels in the figure are: 1: well base, 2: socket, 3: sealing packing, 4: sealing ring, 5: hot-melt sealing tape, 6: plastic pipe.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but the content of the present invention is not limited to the stated scope.

Example 1: A sealing connection method for a plastic inspection well socket. First insert the socket 2 into the hole of the well base 1, weld the socket 2 to the well base 1 by hot-melt welding, and then connect the plastic with the port flush. Insert the tube 6 into the socket of the socket 2, fill the gap between the socket 2 and the plastic tube 6 with sealing packing 3, put the sealing ring 4 into it, and finally seal the gap between the socket 2 and the plastic tube 6 with a hot-melt sealing tape 5 gap between. The size of the gap between the filling socket 2 and the plastic pipe 6 is 5mm. When sealing, use the conical surface of the socket 2, the sealing packing 3, the sealing ring 4 and the hot-melt sealing tape 5 to perform four-stage sealing. The linear seal between the end face of the plastic pipe and the conical surface of the socket is the first-level seal, the packing is the second-level seal, the sealing ring is the third-level seal, and the hot-melt sealing tape is the fourth-level seal. The sealing packing 3 is a corrosion-resistant asbestos rope. The socket 2 and the well block 1 are connected by socket hot-melt welding.

The socket 2 and the well base 1 are welded by socket heat fusion, the sealing packing 3 is placed between the socket 2 and the plastic pipe 6, and the sealing ring 4 is used for the sealing packing 3 to be filled and placed between the socket 2 and the plastic pipe 6 The plugging and sealing, the hot-melt sealing tape 5 is hot-melt welded with the socket 2 and the plastic pipe 6 to further ensure the sealing between the socket 2 and the plastic pipe 6, and at the same time improve the connection strength between the socket 2 and the plastic pipe 6 and reliability.

Example 2: A sealing connection method for a plastic inspection well socket. First insert the socket 2 into the hole of the well base 1, weld the socket 2 to the well base 1 by hot-melt welding, and then connect the plastic with the port flush. Insert the pipe 6 into the socket of the socket 2, fill the gap between the socket 2 and the plastic pipe 6 with sealing packing 3, put the sealing ring 4 into it, and finally seal the gap between the socket 2 and the plastic pipe 6 with a hot-melt sealing tape 5 gap between. The size of the gap between the filling socket 2 and the plastic pipe 6 is 15 mm. When sealing, use the conical surface of the socket 2, the sealing packing 3, the sealing ring 4 and the hot-melt sealing tape 5 to perform four-stage sealing. The linear seal between the end face of the plastic pipe and the conical surface of the socket is the first-level seal, the packing is the second-level seal, the sealing ring is the third-level seal, and the hot-melt sealing tape is the fourth-level seal. The sealing packing 3 is a flexible sealing packing material. The socket 2 and the well block 1 are connected by socket hot-melt welding.

The socket 2 and the well base 1 are welded by socket heat fusion, the sealing packing 3 is placed between the socket 2 and the plastic pipe 6, and the sealing ring 4 is used for the sealing packing 3 to be filled and placed between the socket 2 and the plastic pipe 6 The plugging and sealing, the hot-melt sealing tape 5 is hot-melt welded with the socket 2 and the plastic pipe 6 to further ensure the sealing between the socket 2 and the plastic pipe 6, and at the same time improve the connection strength between the socket 2 and the plastic pipe 6 and reliability.

Example 3: A sealing connection method for a plastic inspection well socket. First, insert the socket 2 into the hole of the well base 1, weld the socket 2 to the well base 1 by hot-melt welding, and then connect the plastic with the port flush. Insert the pipe 6 into the socket of the socket 2, fill the gap between the socket 2 and the plastic pipe 6 with sealing packing 3, put the sealing ring 4 into it, and finally seal the gap between the socket 2 and the plastic pipe 6 with a hot-melt sealing tape 5 gap between. The size of the gap between the filling socket 2 and the plastic pipe 6 is 10 mm. When sealing, use the conical surface of the socket 2, the sealing packing 3, the sealing ring 4 and the hot-melt sealing tape 5 to perform four-stage sealing. The linear seal between the end face of the plastic pipe and the conical surface of the socket is the first-level seal, the packing is the second-level seal, the sealing ring is the third-level seal, and the hot-melt sealing tape is the fourth-level seal. The sealing packing 3 is a viscous solid-fluid material. The socket 2 and the well block 1 are connected by socket hot-melt welding.

The socket 2 and the well base 1 are welded by socket heat fusion, the sealing packing 3 is placed between the socket 2 and the plastic pipe 6, and the sealing ring 4 is used for the sealing packing 3 to be filled and placed between the socket 2 and the plastic pipe 6 The plugging and sealing, the hot-melt sealing tape 5 and the socket 2 and the plastic pipe 6 are hot-melt welded to further ensure the sealing between the socket 2 and the plastic pipe 6, and at the same time improve the connection strength between the socket 2 and the plastic pipe 6 and reliability.

Example 3: A sealing connection method for a plastic inspection well socket. First, insert the socket 2 into the hole of the well base 1, weld the socket 2 to the well base 1 by hot-melt welding, and then connect the plastic with the port flush. Insert the tube 6 into the socket of the socket 2, fill the gap between the socket 2 and the plastic tube 6 with sealing packing 3, put the sealing ring 4 into it, and finally seal the gap between the socket 2 and the plastic tube 6 with a hot-melt sealing tape 5 gap between. The size of the gap between the filling socket 2 and the plastic pipe 6 is 7mm. When sealing, use the conical surface of the socket 2, the sealing packing 3, the sealing ring 4 and the hot-melt sealing tape 5 to perform four-stage sealing. The linear seal between the end face of the plastic pipe and the conical surface of the socket is the first-level seal, the packing is the second-level seal, the sealing ring is the third-level seal, and the hot-melt sealing tape is the fourth-level seal. The sealing packing 3 is a viscous solid-fluid material. The socket 2 and the well block 1 are connected by socket hot-melt welding.

The socket 2 and the well base 1 are welded by socket heat fusion, the sealing packing 3 is placed between the socket 2 and the plastic pipe 6, and the sealing ring 4 is used for the sealing packing 3 to be filled and placed between the socket 2 and the plastic pipe 6 The plugging and sealing, the hot-melt sealing tape 5 is hot-melt welded with the socket 2 and the plastic pipe 6 to further ensure the sealing between the socket 2 and the plastic pipe 6, and at the same time improve the connection strength between the socket 2 and the plastic pipe 6 and reliability.

Claims (5)

1. the seal connecting method of a bell mouth of plastic inspection well, it is characterized in that: first by bellmouth (2) fill-in well seat (1) hole, bellmouth (2) is welded on well seat (1) by thermofussion welding connection, again plastic pipe concordant port (6) is inserted in the bell and spigot of bellmouth (2), with the gap between airtight and watertight padding (3) filling bellmouth (2) and plastic pipe (6), pack sealing ring (4) into, finally by the clearance aperture between hot-melting sealed band (5) sealing bellmouth (2) and plastic pipe (6).

2. the seal connecting method of bell mouth of plastic inspection well according to claim 1, is characterized in that: the gap between bellmouth (2) and plastic pipe (6) is 5～15mm.

3. the seal connecting method of bell mouth of plastic inspection well according to claim 1, is characterized in that: when sealing, adopt bellmouth (2) conical surface, and airtight and watertight padding (3), sealing ring (4) and hot-melting sealed band (5) carry out level Four sealing.

4. according to the seal connecting method of the bell mouth of plastic inspection well described in claim 1 or 3, it is characterized in that: bellmouth (2) adopts the mode of socket hot-melting welding to be connected with well seat (1).

5. the seal connecting method of bell mouth of plastic inspection well according to claim 1, is characterized in that: airtight and watertight padding (3) is flexible sealing packing material.