Socket type cement pipe connecting structure

Abstract

The utility model relates to the technical field of pipeline connectors, in particular to a socket type cement pipe connecting structure, one end of a pipe body is provided with a socket, the other end of the pipe body is provided with a bell mouth, the socket of the pipe body is inserted into the bell mouth of another pipe body, and the socket of the pipe body is connected with the bell mouth of another pipe body through a bolt. The outer sides of the spigot and the socket extend to form a step-shaped structure, a first sealing ring is arranged at the joint of the outer sides of the spigot and the socket, a conical sealing ring is arranged at the middle joint of the spigot and the socket, and a second sealing ring is arranged at the joint of the inner sides of the spigot and the socket. According to the connecting structure, the sealing effect of the connecting position of the cement pipe is further enhanced, the first sealing ring can play a buffering role, protect the inner wall of the pipe body, ensure that fluid in the pipe uniformly passes through and prolong the service life of the cement pipe, and meanwhile, the connecting structure can also play a certain damping role.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline interfaces, in particular to a socket-and-spigot type cement pipe connection structure. Background Art

[0002] Cement pipe, also known as cement pressure pipe and reinforced concrete pipe, can be used as sewer pipe in urban construction foundation to discharge sewage, and can also be used as flood control drainage pipe in road and bridge construction. It can also be used as water pipe and farmland machine well pipe in some special factories and mines. Cement pipe is widely used in many fields such as urban infrastructure, agriculture, industry and life, and undertakes important functions such as drainage, sewage discharge, soil and water conservation, etc.

[0003] The prior art uses a spigot-type cement pipe, with a spigot at one end and a socket at the other end. When the cement pipes are connected, the spigot of the cement pipe is inserted into the socket of another cement pipe, and then concrete is injected into the reserved position of the spigot for bonding and sealing. This pipe connection method is relatively cumbersome and difficult to construct. Due to the limited fluidity of concrete, it may not be filled in place, resulting in poor sealing. In addition, due to environmental factors such as temperature and humidity, the concrete used for sealing may crack, thereby affecting the sealing effect. Although sealing rings are also used for sealing when cement pipes are connected, when the medium pressure inside the cement pipe is too high, the cement pipe connection is prone to loosening, thereby affecting the sealing effect of the spigot. Utility Model Content

[0004] The main purpose of the utility model is to provide a socket-and-spigot type cement pipe connection structure, which can effectively solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A socket-and-spigot cement pipe connection structure, one end of the pipe body is arranged as a socket, the other end of the pipe body is arranged as a socket, the socket of the pipe body is inserted into the socket of another pipe body, the socket of the pipe body and the socket of another pipe body are connected by bolts, the socket and the socket both extend outward to form a stepped structure, a first sealing ring is arranged at the outer connection of the socket and the socket, a conical sealing ring is arranged at the middle connection of the socket and the socket, and a second sealing ring is arranged at the inner connection of the socket and the socket.

[0007] Furthermore, the socket includes a socket pipe opening, a boss and a first flange edge, and the boss and the first flange edge are sequentially extended outward from the outer side of the socket pipe opening; the socket includes a socket pipe opening, an extension pipe and a second flange edge, and the extension pipe and the second flange edge are sequentially extended outward from the outer side of the socket pipe opening.

[0008] Furthermore, a pipe mouth slot is formed between the end face of the socket pipe mouth and the inner wall of the extension tube, the pipe mouth slot cooperates with the plug pipe mouth, a boss slot is formed on the inner wall of the second flange edge, the boss slot cooperates with the boss, the inner wall of the extension tube transitions to the inner wall of the second flange edge and extends to form a conical groove, and the conical groove cooperates with the conical sealing ring.

[0009] Furthermore, the diameter of the inner wall of the socket pipe opening is the same as the diameter of the inner wall of the socket pipe opening, the diameter of the outer wall of the socket pipe opening is the same as the inner wall diameter of the extension tube located at the pipe opening slot, the diameter of the outer wall of the boss is the same as the diameter of the inner wall of the second flange edge, and the diameter of the outer wall of the first flange edge is the same as the diameter of the outer wall of the second flange edge.

[0010] Furthermore, the first flange edge is evenly provided with a plurality of socket through holes along the circumference of the tube body, and the second flange edge is evenly provided with a plurality of socket through holes along the circumference of the tube body, the socket through holes correspond to the socket through holes one by one, the socket pipe openings and the socket pipe openings are correspondingly penetrated with bolts, which are fastened with nuts.

[0011] Furthermore, the first sealing ring is arranged between the first flange edge and the second flange edge, and the second sealing ring is evenly provided with a plurality of connecting holes along the circumferential direction, and the connecting holes correspond to the socket through holes one by one.

[0012] Furthermore, the second sealing ring is arranged in the pipe opening slot.

[0013] Furthermore, the pipe body is formed by casting concrete.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. A socket-and-spigot cement pipe connection structure adopts sealing ring sealing and bolt fixing, which reduces the construction difficulty. The bolt tightening makes the socket squeeze the sealing ring to fill the possible gap, further enhancing the sealing effect. The cement pipes are connected by bolts evenly arranged along the circumference to ensure that the cement pipes are evenly stressed, not easy to deflect or loosen after being connected, and at the same time prevent the cement pipes from rotating, with good sealing effect.

[0016] 2. In a socket-and-spigot cement pipe connection structure, the first sealing ring arranged at the socket pipe mouth can protect the inner wall of the pipe body at the pipe connection, reduce the possibility of water seepage caused by damage to the inner wall of the pipe body, and at the same time ensure the uniform passage of the fluid in the pipe, reduce the wear of the inner wall of the pipe body, and extend the service life of the cement pipe.

[0017] 3. In a socket-and-spigot cement pipe connection structure, a first sealing ring, a conical sealing ring and a second sealing ring are respectively provided. Due to the nature of the sealing ring itself, this structure can also play a certain shock-absorbing role. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the socket-and-spigot cement pipe connection structure according to an embodiment of the utility model;

[0019] Figure 2 It is a cross-sectional schematic diagram of the socket-and-spigot type cement pipe connection structure according to an embodiment of the utility model;

[0020] Figure 3 for Figure 2 The enlarged structural diagram at A in the middle;

[0021] Figure 4 This is a schematic diagram of the structure of the second sealing ring described in an embodiment of the utility model.

[0022] In the figure: 1. pipe body; 11. socket; 111. socket pipe opening; 112. boss; 113. first flange edge; 114. socket through hole; 12. socket; 121. socket pipe opening; 122. extension pipe; 123. second flange edge; 124. socket through hole; 2. first sealing ring; 21. connecting hole; 3. conical sealing ring; 4. second sealing ring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the following description of the utility model, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. The term "connection" only indicates the connection between devices and has no special meaning.

[0025] In addition, the technical fields and installation methods involved in the embodiments of the present invention described below can be combined with each other as long as there is no conflict between them.

[0026] Specific embodiment: Figure 1-Figure 4As shown, a socket-and-spigot cement pipe connection structure, one end of the pipe body 1 is set as a socket 11, and the other end of the pipe body 1 is set as a socket 12, the socket 11 of the pipe body 1 is inserted into the socket 12 of another pipe body 1, the socket 11 of the pipe body 1 and the socket 12 of another pipe body 1 are connected by bolts, the socket 11 and the socket 12 both extend outward to form a stepped structure, a first sealing ring 2 is set at the outer connection of the socket 11 and the socket 12, a conical sealing ring 3 is set at the middle connection of the socket 11 and the socket 12, and a second sealing ring 4 is set at the inner connection of the socket 11 and the socket 12.

[0027] Furthermore, the socket 11 includes a socket pipe opening 111, a boss 112 and a first flange edge 113, and the boss 112 and the first flange edge 113 are sequentially extended outward from the outer side of the socket pipe opening 111, and the socket pipe opening 111, the boss 112 and the first flange edge 113 form a stepped structure, and the socket 12 includes a socket pipe opening 121, an extension pipe 122 and a second flange edge 123, and the extension pipe 122 and the second flange edge 123 are sequentially extended outward from the outer side of the socket pipe opening 121, and the socket pipe opening 121, the extension pipe 122 and the second flange edge 123 form a stepped structure.

[0028] Furthermore, a pipe mouth slot is formed between the end face of the socket pipe mouth 121 and the inner wall of the extension tube 122, the pipe mouth slot cooperates with the plug pipe mouth 111, a boss slot is formed on the inner wall of the second flange edge 123, the boss slot cooperates with the boss 112, the inner wall of the extension tube 122 transitions to the inner wall of the second flange edge 123 to form a conical groove, and the conical groove cooperates with the conical sealing ring 3.

[0029] Furthermore, the diameter of the inner wall of the spigot pipe mouth 111 is the same as the diameter of the inner wall of the socket pipe mouth 121. The same diameter of the inner walls of the two can ensure uniform passage of the fluid in the cement pipe. The diameter of the outer wall of the spigot pipe mouth 111 is the same as the inner wall diameter of the extension tube 122 located at the pipe mouth slot. The diameter of the outer wall of the boss 112 is the same as the diameter of the inner wall of the second flange edge 123. When the spigot 11 is inserted into the socket 12, this arrangement makes the spigot 11 and the socket 12 fit tightly together, thereby enhancing the sealing effect. The diameter of the outer wall of the first flange edge 113 is the same as the diameter of the outer wall of the second flange edge 123.

[0030] Furthermore, the first flange edge 113 is evenly provided with a plurality of socket through holes 114 along the circumference of the pipe body 1, and the second flange edge 123 is evenly provided with a plurality of socket through holes 124 along the circumference of the pipe body 1. The socket through holes 114 correspond to the socket through holes 124 one by one, and the socket through holes 114 and the socket through holes 124 are correspondingly penetrated with bolts, which pass through the socket through holes 114 and the socket through holes 124 in turn and are fastened with nuts. The bolt connection can ensure that the cement pipe connection is evenly stressed and tightly connected.

[0031] Furthermore, when the socket 11 of the pipe body 1 is inserted into the socket 12 of another pipe body 1, the socket pipe mouth 111 is inserted into the pipe mouth slot, the socket pipe mouth 111 is flush with the inner wall of the socket pipe mouth 121, the outer wall of the socket pipe mouth 111 is fitted with the inner wall of the extension tube 122, the boss 112 is inserted into the boss slot, the outer wall of the boss 112 is fitted with the inner wall of the second flange edge 123, and the outer wall of the first flange edge 113 is flush with the outer wall of the second flange edge 123, thereby ensuring the stable cooperation between the various parts and enhancing the aesthetics of the cement pipe connection.

[0032] Furthermore, the first sealing ring 2 is arranged between the first flange edge 113 and the second flange edge 123, and is squeezed by the first flange edge 113 and the second flange edge 123 to fill the gap between the first flange edge 113 and the second flange edge 123 to seal the outer connection of the cement pipe. The first sealing ring 2 is evenly provided with a plurality of connecting holes 21 along the circumference, and the connecting holes 21 correspond one by one to the socket through holes 114.

[0033] Furthermore, the conical sealing ring 3 is arranged in the conical groove, and is squeezed by the boss 112 and the extension tube 122 to fill the gap in the conical groove and seal the middle connection of the cement pipe.

[0034] Furthermore, the second sealing ring 4 is arranged in the pipe mouth slot, and is squeezed by the plug pipe mouth 111 and the socket pipe mouth 121 to fill the gap in the pipe mouth slot and seal the inner connection of the cement pipe. At the same time, the second sealing ring 4 plays a certain buffering role, which can prevent the plug pipe mouth 111 and the socket pipe mouth 121 from colliding and causing damage to the inner wall of the cement pipe connection.

[0035] Furthermore, the pipe body 1 is formed by casting concrete.

[0036] A construction method for a socket-and-spigot cement pipe connection structure:

[0037] The two tube bodies 1 are coaxially arranged, the socket 11 of the tube body 1 corresponds to the socket 12 of the other tube body 1, the inner wall of the socket pipe mouth 111 is flush with the inner wall of the socket pipe mouth 121, the first sealing ring 2 is arranged in the pipe mouth slot and located at the socket pipe mouth 121, the conical sealing ring 3 is sleeved on the outer wall of the socket pipe mouth 111 and located on the boss 112, the second sealing ring 4 is sleeved on the outer wall of the boss 112 and located on the first flange edge 113, as the socket 11 of the tube body 1 is inserted into the socket 12 of the other tube body 1, the socket pipe mouth 111 enters the pipe mouth slot, and the first sealing ring 2 is affected by the socket pipe mouth 111 and the socket The pipe mouth 121 is squeezed, the conical sealing ring 3 enters the conical groove, the boss 112 enters the boss slot, the conical sealing ring 3 is squeezed by the boss 112 and the extension tube 122, and the second sealing ring 4 contacts the second flange edge 123 away from the first flange edge 113. The second sealing ring 4 is squeezed by the first flange edge 113 and the second flange edge 123. At the same time, the socket through hole 114, the connecting hole 21 and the socket through hole 124 are aligned, and the bolts pass through the socket through hole 114, the connecting hole 21 and the socket through hole 124 in turn, and are fastened with the nuts to complete the connection between the cement pipes.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A socket-and-spigot cement pipe connection structure, characterized in that: One end of the tube body (1) is provided with a socket (11), and the other end of the tube body (1) is provided with a socket (12). The socket (11) of the tube body (1) is inserted into the socket (12) of the other tube body (1). The socket (11) of the tube body (1) and the socket (12) of the other tube body (1) are connected by bolts. Both the socket (11) and the socket (12) extend outwards to form a stepped structure. A first sealing ring (2) is provided at the outer connection of the socket (11) and the socket (12), a conical sealing ring (3) is provided at the middle connection of the socket (11) and the socket (12), and a second sealing ring (4) is provided at the inner connection of the socket (11) and the socket (12).

2. A socket-and-spigot cement pipe connection structure according to claim 1, characterized in that: The socket (11) comprises a socket pipe opening (111), a boss (112) and a first flange edge (113), and the boss (112) and the first flange edge (113) are sequentially extended outward from the outer side of the socket pipe opening (111); the socket (12) comprises a socket pipe opening (121), an extension pipe (122) and a second flange edge (123), and the extension pipe (122) and the second flange edge (123) are sequentially extended outward from the outer side of the socket pipe opening (121).

3. A socket-and-spigot cement pipe connection structure according to claim 2, characterized in that: A pipe opening slot is formed between the end face of the socket pipe opening (121) and the inner wall of the extension pipe (122), and the pipe opening slot matches with the plug pipe opening (111). A boss slot is formed on the inner wall of the second flange edge (123), and the boss slot matches with the boss (112). The inner wall of the extension pipe (122) transitions to and extends toward the inner wall of the second flange edge (123) to form a tapered groove, and the tapered groove matches with the tapered sealing ring (3).

4. A socket-and-spigot cement pipe connection structure according to claim 2, characterized in that: The diameter of the inner wall of the spigot pipe opening (111) is the same as the diameter of the inner wall of the socket pipe opening (121); the diameter of the outer wall of the spigot pipe opening (111) is the same as the diameter of the inner wall of the extension pipe (122) at the pipe opening slot; the diameter of the outer wall of the boss (112) is the same as the diameter of the inner wall of the second flange edge (123); and the diameter of the outer wall of the first flange edge (113) is the same as the diameter of the outer wall of the second flange edge (123).

5. The socket-and-spigot cement pipe connection structure according to claim 2, characterized in that: The first flange edge (113) is provided with a plurality of socket through holes (114) evenly along the circumference of the tube body (1), and the second flange edge (123) is provided with a plurality of socket through holes (124) evenly along the circumference of the tube body (1), the socket through holes (114) and the socket through holes (124) correspond one to one, and bolts are correspondingly passed through the socket through holes (114) and the socket through holes (124), and the bolts are fastened with nuts.

6. A socket-and-spigot cement pipe connection structure according to claim 5, characterized in that: The first sealing ring (2) is arranged between the first flange edge (113) and the second flange edge (123), and the first sealing ring (2) is evenly provided with a plurality of connecting holes (21) along the circumferential direction, and the connecting holes (21) correspond one to one with the socket through holes (114).

7. The socket-and-spigot cement pipe connection structure according to claim 3, characterized in that: The second sealing ring (4) is arranged in the pipe opening slot.

8. The socket-and-spigot cement pipe connection structure according to claim 1, characterized in that: The pipe body (1) is formed by pouring concrete.

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