Pipeline socket connecting piece

Abstract

The utility model discloses a pipeline spigot connecting piece, which belongs to the technical field of nodular cast iron pipes and comprises a tubular connecting piece body, bellmouths arranged at two ends of the connecting piece body and a baffle ring arranged in the middle of the inner wall of the connecting piece body. A sealing ring containing groove is formed in the inner wall of the bell mouth, and a sealing ring is arranged in the sealing ring containing groove. The bellmouth comprises a first bellmouth and a second bellmouth, the first bellmouth is a flexible bellmouth or a mechanical bellmouth, and the second bellmouth is a flexible bellmouth or a mechanical bellmouth. The utility model has the advantages of preventing the pipeline spigots from mutually moving and slipping and the like, and is simple in structure, convenient to produce, stable to use and low in maintenance cost.

Description

Technical Field

[0001] The utility model relates to the technical field of ductile iron pipes, in particular to a pipeline spigot connector. Background Art

[0002] At present, the industry usually uses coil-and-sleeve fittings, coil-and-insert fittings or socket-and-sleeve fittings for pipe connection. Among them, coil-and-sleeve fittings cannot be used for socket-to-socket connection and are mainly used for interface conversion; coil-and-sleeve fittings need to be used in pairs when used for socket-to-socket connection, and the length adjustment space on the axis is limited; socket-and-sleeve fittings are used for pipe socket-to-socket connection, which is currently the most commonly used connection method, but there is a risk of pipe sockets moving or slipping off. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a pipe socket connector, which has the advantages of preventing the pipe sockets from moving and slipping off each other, and has a simple structure, convenient production, stable use and low maintenance cost.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A pipe spigot connector comprises a tubular connector body, sockets arranged at both ends of the connector body and a retaining ring arranged in the middle of the inner wall of the connector body;

[0006] A sealing ring accommodating groove is arranged on the inner wall of the socket, and a sealing ring is arranged in the sealing ring accommodating groove.

[0007] A further improvement of the technical solution of the utility model is that the two end sockets (1) include a first socket and a second socket, the first socket is a flexible socket or a mechanical socket, and the second socket is a flexible socket or a mechanical socket.

[0008] A further improvement of the technical solution of the utility model is that a flexible sealing ring is arranged at the flexible socket, and a mechanical sealing ring is arranged at the mechanical socket.

[0009] A further improvement of the technical solution of the utility model is that the outer diameter of the socket is the same as the outer diameter of the pipe socket.

[0010] A further improvement of the technical solution of the utility model is that the retaining ring and the connecting piece body are integrally cast.

[0011] A further improvement of the technical solution of the utility model is that the inner diameter of the retaining ring is the same as the inner diameter of the pipe socket.

[0012] A further improvement of the technical solution of the utility model is that a cement mortar layer is arranged outside the inner wall of the connector body, and a cement mortar layer is arranged on the outer wall of the pipeline.

[0013] Due to the adoption of the above technical solution, the technical progress achieved by the utility model is:

[0014] A retaining ring is arranged on the inner wall of the connector of the utility model, and the retaining ring is located in the middle of the connector. The retaining ring and the connector are integrally cast, and the wall thickness grade is K12. The retaining ring can prevent the movement of the sockets on both sides of the connector, and at the same time reduce the addition of the intermediate ring, which has the advantages of preventing the pipe sockets from moving and slipping against each other, and has a simple structure, convenient production, stable use and low maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the double T-shaped interface connector of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the double K-type interface connector of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the double T and K type interface connector of the utility model;

[0018] Among them, 1. socket, 2. sealing ring, 3. plug, 4. retaining ring, 5. connector body, 6. pipe. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below with reference to the accompanying drawings and embodiments:

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" ... etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "several" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0022] Ductile iron pipe interface types include flexible socket (T-type) and mechanical socket (K-type).

[0023] A pipe socket connector, comprising a tubular connector body 5, sockets 1 arranged at both ends of the connector body 5, and a retaining ring 4 arranged in the middle of the inner wall of the connector body 5;

[0024] The inner wall of the socket 1 is provided with a sealing ring receiving groove, and a sealing ring 2 is arranged in the sealing ring receiving groove;

[0025] The socket 1 includes a first socket and a second socket, the first socket is a T-shaped socket or a K-shaped socket, and the second socket is a T-shaped socket or a K-shaped socket; the outer diameter of the socket 1 is the same as the outer diameter of the pipe socket 3;

[0026] A T-shaped sealing ring is provided at the T-shaped socket, and a K-shaped sealing ring is provided at the K-shaped socket;

[0027] The retaining ring 4 is integrally cast with the connector body 5, and the wall thickness grade is K12; the inner diameter of the retaining ring 4 is the same as the inner diameter of the pipe socket 3;

[0028] A cement mortar layer is disposed on the inner wall of the connector body 5 , and a cement mortar layer is disposed on the outer wall of the pipe 6 .

[0029] Usage: During the production of the product, the material of the connector is ductile iron, brand: QT420-5. The connector adopts the green short-process lost foam process to make the connector body 1 and the internal retaining ring 4 integrally cast. The wall thickness grade is K12. The production length can be designed arbitrarily. Generally, the length is less than 2 meters and the diameter is 3000mm and below.

[0030] When the utility model is used, according to the actual situation of the project, the socket 1 at any end and the pipeline socket 3 can be selected for installation. During installation, the connection piece is dragged to insert the pipeline socket 3 into the socket until the end face of the pipeline socket 3 contacts the retaining ring 4 in the middle of the connection piece body 5. Then stop dragging. Adjust the position of the connection piece body 5 and the pipelines on both sides of the connection piece so that the three are on the same axis, and then reversely drag the connection to gradually move the end face of the socket just installed away from the retaining ring, and at the same time guide the other end of the pipeline socket 3 to be installed in the other socket 1. The installation depth of the pipeline socket 3 can be selected according to the actual needs on site, but the socket must be fully inserted into the socket.

[0031] The pipe socket 3 is inserted into the socket 1 of the connector body 5, and has a certain movable space in the length direction of the pipe axis to ensure smooth closing and connection between the pipe sockets. K-type socket connection requires K-type pressure flange, bolts, and rubber rings. When connecting, the pressure flange is inserted into the pipe socket 3, the rubber ring is placed in the K-type socket, the rubber ring and the socket are coated with edible oil, and then tightened with bolts. The bolt shape is T-shaped.

[0032] Example 1

[0033] like Figure 1 As shown, a pipe spigot connector includes a tubular connector body 5, sockets 1 arranged at both ends of the connector body 5, and a retaining ring 4 arranged in the middle of the inner wall of the connector body 5;

[0034] The socket 1 includes a first socket and a second socket, and both the first socket and the second socket are T-shaped sockets;

[0035] A sealing ring accommodating groove is arranged on the inner wall of the socket 1, and a T-shaped sealing ring is arranged in the sealing ring accommodating groove.

[0036] Example 2

[0037] like Figure 2 As shown, a pipe spigot connector includes a tubular connector body 5, sockets 1 arranged at both ends of the connector body 5, and a retaining ring 4 arranged in the middle of the inner wall of the connector body 5;

[0038] The socket 1 includes a first socket and a second socket, and both the first socket and the second socket are K-type sockets;

[0039] A sealing ring accommodating groove is arranged on the inner wall of the socket 1, and a K-type sealing ring is arranged in the sealing ring accommodating groove.

[0040] Example 3

[0041] like Figure 3 As shown, a pipe spigot connector includes a tubular connector body 5, sockets 1 arranged at both ends of the connector body 5, and a retaining ring 4 arranged in the middle of the inner wall of the connector body 5;

[0042] The socket 1 includes a first socket and a second socket, the first socket is a T-shaped socket, and the second socket is a K-shaped socket;

[0043] The inner wall of the socket 1 is provided with a sealing ring receiving groove, a T-shaped sealing ring is provided in the sealing ring receiving groove of the T-shaped socket, and a K-shaped sealing ring is provided in the sealing ring receiving groove of the K-shaped socket.

[0044] In summary, the utility model has the advantages of preventing the pipe sockets from moving relative to each other and slipping off, and has a simple structure, convenient production, stable use and low maintenance cost.

Claims

1. A pipe socket connector, characterized in that: It comprises a tubular connector body (5), sockets (1) arranged at both ends of the connector body (5), and a retaining ring (4) arranged in the middle of the inner wall of the connector body (5); A sealing ring receiving groove is provided on the inner wall of the socket (1), and a sealing ring (2) is provided in the sealing ring receiving groove.

2. The pipe spigot connector according to claim 1, characterized in that: The two end sockets (1) comprise a first socket and a second socket, the first socket is a flexible socket or a mechanical socket, and the second socket is a flexible socket or a mechanical socket.

3. The pipe spigot connector according to claim 2, characterized in that: A flexible sealing ring is arranged at the flexible socket, and a mechanical sealing ring is arranged at the mechanical socket.

4. The pipe spigot connector according to claim 1, characterized in that: The outer diameter of the socket (1) is the same as the outer diameter of the pipe socket (3).

5. The pipe spigot connector according to claim 1, characterized in that: The retaining ring (4) and the connecting piece body (5) are integrally cast.

6. The pipe spigot connector according to claim 1, characterized in that: The inner diameter of the retaining ring (4) is the same as the inner diameter of the pipeline socket (3).

7. The pipe spigot connector according to claim 1, characterized in that: A cement mortar layer is provided on the outer side of the inner wall of the connector body (5), and a cement mortar layer is provided on the outer wall of the pipe (6).

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