Chlorinated polyvinyl chloride cable protection pipe

Abstract

In order to solve the problems of connection strength and water leakage at a connector of a chlorinated polyvinyl chloride cable protection pipe, the chlorinated polyvinyl chloride cable protection pipe is designed and comprises a bellmouth, a spigot, a concave sealing ring and a pipe body, the concave sealing ring surrounds the annular conical groove of the spigot and is clamped in the transition area of the bell mouth, the concave part of the concave sealing ring is tightly attached to the outer surface of the annular conical groove, and the convex lug of the concave sealing ring is tightly attached to the inner surface of the transition area; the clamping nail on the inner surface of the bellmouth is clamped on the concave clamping nail groove on the outer surface of the socket, the upwarp of the clamping nail is clamped on the concave wall of the concave clamping nail groove, the concave sealing ring is provided with a plurality of convex lugs, the passing distance of underground water flowing into the cable protection pipeline is increased, water leakage is effectively prevented, and the clamping nail of the bellmouth is tightly connected with the concave clamping nail groove of the socket. And the tensile strength of the connecting part is improved, and the cable is suitable for cable laying in areas with poor geological settlement.

Description

Technical Field

[0001] The utility model relates to a cable protection tube, in particular to a chlorinated polyvinyl chloride cable protection tube. Background Art

[0002] Chlorinated polyvinyl chloride pipes have good flame retardant properties, which are nearly 50% higher than those of polypropylene pipes. They are widely used in cable protection pipes. However, their Vicat softening temperature is low, making them difficult to connect by hot melt. Socket connection is the only option, and the strength of the interface connection is much lower than that of the hot melt connection. Therefore, improving the strength of the socket connection of chlorinated polyvinyl chloride pipes and reducing water leakage at the interface are the key points of the research. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a chlorinated polyvinyl chloride cable protection tube, which is used to solve the problems of connection strength and water leakage at the interface of the chlorinated polyvinyl chloride cable protection tube.

[0004] The utility model is achieved in this way:

[0005] A chlorinated polyvinyl chloride cable protection tube, comprising a socket 1, a plug 2, a concave sealing ring 3 and a tube body 4, characterized in that one end of the tube body 4 is connected to the socket 1, and the other end is connected to the plug 2;

[0006] The socket 1 includes a flaring area 11, a transition area 12, and a shrinking area 13, which are sequentially connected from the distal end to the proximal end of the pipe body 4, and the diameters decrease radially. A staple 14 is arranged on the inner surface of the transition area 12, and the staples 14 are evenly and discontinuously distributed; one end of the staple 14 is connected to the inner surface of the socket 1, and the other end is provided with a warping 141 that warps radially inward; a matching mark 15 is arranged on the outer surface of the transition area 12;

[0007] The socket 2 is provided with an annular conical groove 21 and a concave staple groove 22 along the outer surface, the concave staple groove 22 is evenly and discontinuously distributed, closer to the end of the socket 2 than the annular conical groove 21, and the concave staple groove 22 is provided with a concave wall 221;

[0008] The concave sealing ring 3 includes a protrusion 31 and a groove 32;

[0009] In the unconnected state, the counterpart marks 15 of the two chlorinated polyvinyl chloride cable protection tubes are on the same horizontal line, and the socket 1 and the concave sealing ring 3 of one chlorinated polyvinyl chloride cable protection tube and the socket 2 of the other chlorinated polyvinyl chloride cable protection tube are arranged in sequence, and the axes are on the same horizontal line;

[0010] In the connected state, the concave sealing ring 3 surrounds the annular conical groove 21 of the socket 2, is clamped in the transition zone 12 of the socket 1, the recess 32 is in close contact with the outer surface of the annular conical groove 21, and the lug 31 is in close contact with the inner surface of the transition zone 12; the staple 14 is clamped in the outer surface of the concave staple groove 22 at the end of the socket 2, and the tilting 141 of the staple 14 is clamped in the concave wall 221 of the concave staple groove 22;

[0011] The socket 1, the plug 2 and the pipe body 4 are made of chlorinated polyvinyl chloride composite materials, and the concave sealing ring 3 is made of rubber.

[0012] Advantages of the utility model:

[0013] 1) The concave sealing ring has multiple lugs to increase the distance that groundwater flows into the cable protection pipe, effectively preventing water leakage;

[0014] 2) The clamp of the socket is tightly connected with the concave clamp groove of the plug, which improves the tensile strength of the connection and is suitable for cable laying in areas with poor geological settlement. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described with reference to the accompanying drawings:

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 It is a three-dimensional diagram of the socket 1 of the utility model;

[0018] Figure 3 It is a stereoscopic diagram of the socket 2 of the utility model;

[0019] Figure 4 It is a cross-sectional view of the concave sealing ring 3 of the utility model;

[0020] Figure 5 It is a stereogram of the utility model before connection;

[0021] Figure 6 It is a cross-sectional view of the utility model after connection;

[0022] Figure 7 It is a three-dimensional diagram of the tilting 141 and the recessed wall 221 after the utility model is connected;

[0023] The reference numerals are: 1 is a socket, 2 is a plug, 3 is a concave sealing ring, 4 is a pipe body, 11 is a flaring area, 12 is a transition area, 13 is a shrinking area, 14 is a staple, 141 is a lift, 15 is a matching mark, 21 is an annular cone groove, 22 is a concave staple groove, 221 is a recessed wall, 31 is a lug, and 32 is a recess. DETAILED DESCRIPTION

[0024] The present invention will be further described with reference to the accompanying drawings and embodiments:

[0025] like Figure 1 As shown, a chlorinated polyvinyl chloride cable protection tube includes a socket 1, a plug 2, a concave sealing ring 3 and a tube body 4, characterized in that one end of the tube body 4 is connected to the socket 1, and the other end is connected to the plug 2.

[0026] like Figure 2 As shown, the socket 1 includes a flaring area 11, a transition area 12, and a shrinking area 13. The flaring area 11, the transition area 12, and the shrinking area 13 are connected in sequence from the distal end to the proximal end of the tube body 4, and the diameters decrease radially. A staple 14 is arranged on the inner surface of the transition area 12, and the staples 14 are evenly and discontinuously distributed; one end of the staple 14 is connected to the inner surface of the socket 1, and the other end is provided with a protrusion 141 that is radially inwardly protruded; and a matching mark 15 is arranged on the outer surface of the transition area 12.

[0027] like Figure 3 As shown, the socket 2 is provided with an annular conical groove 21 and a concave staple groove 22 along the outer surface, and the concave staple groove 22 is evenly and discontinuously distributed and is closer to the end of the socket 2 than the annular conical groove 21 .

[0028] like Figure 4 As shown, the concave sealing ring 3 includes a protrusion 31 and a recess 32 .

[0029] like Figure 5 As shown, in the unconnected state, the mating marks 15 of the two chlorinated polyvinyl chloride cable protection tubes are placed on the same horizontal line, and the socket 1 and the concave sealing ring 3 of one chlorinated polyvinyl chloride cable protection tube and the socket 2 of the other chlorinated polyvinyl chloride cable protection tube are arranged in sequence, and the axes are on the same horizontal line.

[0030] like Figure 6 and Figure 7 As shown, in the connected state, the concave sealing ring 3 surrounds the annular conical groove 21 of the socket 2 and is stuck in the transition zone 12 of the socket 1. The recess 32 is close to the outer surface of the annular conical groove 21, and the lug 31 is close to the inner surface of the transition zone 12; the staple 14 is stuck on the outer surface of the concave staple groove 22 at the end of the socket 2, and the protrusion 141 of the staple 14 is stuck on the recessed wall 221 of the concave staple groove 22.

[0031] The socket 1, the plug 2 and the pipe body 4 are made of chlorinated polyvinyl chloride composite materials, and the concave sealing ring 3 is made of rubber.

Claims

1. A chlorinated polyvinyl chloride cable protection tube, comprising a socket (1), a plug (2), a concave sealing ring (3) and a tube body (4), characterized in that: One end of the pipe body (4) is connected to the socket (1), and the other end is connected to the plug (2); The socket (1) comprises a flaring area (11), a transition area (12), and a shrinking area (13). The flaring area (11), the transition area (12), and the shrinking area (13) are sequentially connected from the distal end to the proximal end of the tube body (4), and the diameters decrease radially. A staple (14) is arranged on the inner surface of the transition area (12), and the staples (14) are evenly and discontinuously distributed. One end of the staple (14) is connected to the inner surface of the socket (1), and the other end is provided with a protrusion (141) that is radially inwardly protruded. A matching mark (15) is arranged on the outer surface of the transition area (12). The socket (2) is provided with an annular cone groove (21) and a concave staple groove (22) along the outer surface, the concave staple groove (22) is evenly and discontinuously distributed, and is closer to the end of the socket (2) than the annular cone groove (21), and the concave staple groove (22) is provided with a concave wall (221); The concave sealing ring (3) comprises a lug (31) and a recess (32).

2. The chlorinated polyvinyl chloride cable protection tube according to claim 1, characterized in that: In the unconnected state, the mating marks (15) of the two chlorinated polyvinyl chloride cable protection tubes are on the same horizontal line, and the socket (1) and the concave sealing ring (3) of one chlorinated polyvinyl chloride cable protection tube and the plug (2) of the other chlorinated polyvinyl chloride cable protection tube are arranged in sequence, and the axes are on the same horizontal line.

3. The chlorinated polyvinyl chloride cable protection tube according to claim 1, characterized in that: In the connected state, the concave sealing ring (3) surrounds the annular conical groove (21) of the socket (2) and is clamped in the transition zone (12) of the socket (1); the recess (32) is in close contact with the outer surface of the annular conical groove (21), and the lug (31) is in close contact with the inner surface of the transition zone (12); the staple (14) is clamped in the outer surface of the concave staple groove (22) at the end of the socket (2), and the raised portion (141) of the staple (14) is clamped in the concave wall (221) of the concave staple groove (22).

4. The chlorinated polyvinyl chloride cable protection tube according to claim 1, characterized in that: The materials of the socket (1), the plug (2) and the pipe body (4) are chlorinated polyvinyl chloride composite materials, and the concave sealing ring (3) is rubber.

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