PVC (polyvinyl chloride) drainage pipe convenient for butt joint
By setting a threaded surface and an extrusion ring on the PVC drain pipe, combining the butt fixing mechanism and sealing ring, the gas leakage and tight winding problems during splicing of PVC pipes are solved, and a firm pipeline connection and waterproof effect is achieved.
Patent Information
- Application Number
- CN202422254570.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-13
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-13
AI Technical Summary
Existing PVC pipes are prone to gas leakage and not tightly entangled when splicing, resulting in physical harm and water leakage of operators.
A PVC drainage pipe that is easy to connect is designed. By setting a threaded surface and an extrusion ring on the drainage pipe body, the docking fixing mechanism is used to achieve initial fixation of the docking pipe, and prevent leakage through the sealing ring, and further reinforcement is carried out by fixing bolts.
It realizes firm docking of PVC drain pipes, avoids gas leakage and water leakage, and improves operational safety and connection reliability.
Smart Images
Figure CN223153119U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of PVC pipes, in particular to a PVC drainage pipe which is easy to connect. Background Art
[0002] PVC pipe, or rigid polyvinyl chloride pipe, is made of polyvinyl chloride resin, stabilizer, lubricant, etc., and is extruded by hot pressing. It is the earliest plastic material developed and applied. UPVC pipe has strong corrosion resistance, is easy to bond, has low price, and is hard in texture. However, due to the leakage of UPVC monomer and additives, it is only suitable for water supply systems with a delivery temperature not exceeding 45°C.
[0003] During the use of most existing PVC pipes, whether in the home or in industry and agriculture, PVC pipes occupy a pivotal position. However, when splicing, most existing PVC pipes are often spliced by hot melt softening, or two PVC pipes are butted together by PVC outer thread straight-through. Hot melt softening splicing will cause gas to be generated, which will harm the operator's body. When butt-jointing is performed by PVC outer thread straight-through, due to the small gap between the threaded connection screw teeth, it is usually necessary to wrap a few turns of water-draining tape on the thread surface before butt-jointing. During the waterproof tape wrapping process, the tape and the thread are not wrapped tightly enough, and water leakage is likely to occur after the PVC pipes are butt-jointed. Therefore, the utility model designs a PVC drainage pipe that is easy to butt to solve the problems existing in the prior art. Utility Model Content
[0004] Based on the existing technical problems of PVC pipes, the utility model proposes a PVC drainage pipe which is easy to connect.
[0005] The utility model provides a PVC drainage pipe that is easy to connect, comprising a drainage pipe body, a threaded surface is provided on the outer arc surface of one end of the drainage pipe body, an extrusion ring 1 is fixedly connected to one end of the drainage pipe body, a butt joint pipe 1 is threadedly connected to the threaded surface, an extrusion ring 2 is fixedly connected to the inner arc surface of the butt joint pipe 1, the inclined surface of the extrusion ring 1 is in extrusion contact with the inclined surface of the extrusion ring 2, a butt joint pipe 2 is symmetrically arranged at one end of the butt joint pipe 1, the butt joint pipe 2 is threadedly connected to the other drainage pipe body, and a butt joint fixing mechanism is provided on the outer sides of the butt joint pipe 1 and the butt joint pipe 2, and the butt joint fixing mechanism realizes the action of butt joint fixing the butt joint pipe 2 and the butt joint pipe 2 with each other.
[0006] Preferably, the docking and fixing mechanism includes a first docking ring and a second docking ring. The first docking ring is fixedly installed on the outer arc surface of the first docking pipe, and the second docking ring is fixedly installed on the outer arc surface of the second docking pipe. The first docking ring and the second docking ring are in extrusion contact. A support rod is fixedly installed on the arc surface of the first docking ring. A plurality of the support rods are arranged in a circumferential array. The opposite surfaces of every two support rods are rotatably connected by a ball bearing to a rotating shaft. A rotating block is fixedly connected to the arc surface of the rotating shaft. One end of the rotating block is fixedly connected to a fixed block, and the fixed block is in extrusion contact with one side surface of the second docking ring.
[0007] Through the above technical solution, the first docking ring and the second docking ring are provided. Through the support rods arranged on the arc surface of the first docking ring, the support rods are rotatably connected to the rotating block through the rotating shaft. The rotating block is fixedly connected to the fixed block, and the fixed block is in extrusion contact with the second docking ring. Under the action of the rotating block and the fixed block, the first docking ring and the second docking ring are initially docked and fixed.
[0008] Preferably, a support plate is fixedly connected to the outer arc surface of the first docking pipe. A plurality of the support plates are arranged in a circumferential array. A sliding groove is formed on the surface of the support plate. Limiting grooves are formed on both side surfaces of the sliding groove. A sliding block is slidably inserted into the inner side wall of the sliding groove. Limiting blocks are fixedly connected to both sides of the sliding block. The surface of the limiting block is slidably inserted into the inner side wall of the limiting groove. A return spring is fixedly connected to the upper end of the sliding block. One end of the return spring is fixedly connected to the upper top surface of the sliding groove. The upper end of the sliding block is rotatably connected to one end of the rotating block through a pin shaft.
[0009] Through the above technical solution, the sliding block is provided. The sliding block slides up and down in the sliding groove through the limiting block and is rotatably connected to the rotating block. When the sliding block moves up, the rotating block rotates clockwise, causing the fixed block to move down. When the sliding block moves down, the rotating block rotates counterclockwise, causing the fixed block to move up. The return spring is provided to make the sliding block receive the extrusion of the return spring when moving up.
[0010] Preferably, docking holes are formed on one end surface of the first docking ring. A plurality of the docking holes are arranged in a circumferential array. A docking block is fixedly connected to one end surface of the second docking ring. A plurality of the docking blocks are arranged in a circumferential array. The surface of the docking block is slidably inserted into the inner side wall of the docking hole. The inclined surface of the docking block is in sliding contact with the inclined surface of the sliding block.
[0011] Through the above technical solution, the docking block is provided. When the first docking ring and the second docking ring are in extrusion contact, the docking block is inserted into the docking hole, and the inclined surface of the docking block is in sliding contact with the inclined surface of the sliding block. When the docking block is inserted into the docking hole, the sliding block will move up, and through the rotating rod, the fixed block will move down to be in extrusion contact with the second docking ring, completing the initial docking and fixing of the first docking ring and the second docking ring.
[0012] Preferably, a first threaded hole is formed in the middle of the rotating block, and a second threaded hole is formed in the arc surface of the docking ring. The plurality of second threaded holes are arranged in a circumferential array. The first threaded hole corresponds to the second threaded hole one by one, and a fixing bolt is screwed into both the first threaded hole and the second threaded hole.
[0013] Through the above technical solution, after the initial docking and fixing of the first docking ring and the second docking ring are completed, the first threaded hole and the second threaded hole correspond to each other one by one. The rotating block is fixed by the fixing bolt, making the docking and fixing of the first docking ring and the second docking ring more firm.
[0014] Preferably, a first sealing ring is in extrusion contact between the inclined surfaces of the first extrusion ring and the second extrusion ring, and a second sealing ring is in extrusion contact between the first docking pipe and the second docking pipe.
[0015] Through the above technical solution, by providing the first sealing ring and the second sealing ring, the water flowing inside the drain pipe will not leak out.
[0016] The beneficial effects of the present utility model are as follows:
[0017] 1. By providing the docking block, when the first docking ring and the second docking ring are in extrusion contact, the docking block is inserted into the docking hole, and the inclined surface of the docking block is in sliding contact with the inclined surface of the sliding block. When the docking block is inserted into the docking hole, the sliding block will move upward, and through the rotating rod, the fixing block will move downward and be in extrusion contact with the second docking ring, completing the initial docking and fixing of the first docking ring and the second docking ring.
[0018] 2. After the initial docking and fixing of the first docking ring and the second docking ring are completed, the first threaded hole and the second threaded hole correspond to each other one by one. The rotating block is fixed by the fixing bolt, making the docking and fixing of the first docking ring and the second docking ring more firm. By providing the first sealing ring and the second sealing ring, the water flowing inside the drain pipe will not leak out. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of a PVC drain pipe convenient for docking proposed by the present utility model;
[0020] Figure 2 It is a three-dimensional structure diagram of the first sealing ring of a PVC drain pipe convenient for docking proposed by the present utility model;
[0021] Figure 3 It is a three-dimensional structure diagram of the rotating block of a PVC drain pipe convenient for docking proposed by the present utility model;
[0022] Figure 4 It is a three-dimensional structure diagram of the first threaded hole of a PVC drain pipe convenient for docking proposed by the present utility model;
[0023] Figure 5 A three-dimensional view of the slider structure of a PVC drain pipe that is convenient for docking proposed by the present utility model.
[0024] In the figure: 1, the drain pipe body; 2, the threaded surface; 3, the first extrusion ring; 4, the first docking pipe; 5, the second extrusion ring; 6, the second docking pipe; 7, the first docking ring; 8, the second docking ring; 9, the support rod; 10, the rotating shaft; 11, the rotating block; 12, the fixed block; 13, the support plate; 14, the sliding groove; 15, the limiting groove; 16, the slider; 17, the limiting block; 18, the return spring; 19, the docking hole; 20, the docking block; 21, the first threaded hole; 22, the second threaded hole; 23, the fixing bolt; 24, the first sealing ring; 25, the second sealing ring. Specific implementation mode
[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.
[0026] Refer to Figures 1-5 , a PVC drain pipe that is convenient for docking, including a drain pipe body 1. A threaded surface 2 is provided on the outer arc surface of one end of the drain pipe body 1. A first extrusion ring 3 is fixedly connected to one end of the drain pipe body 1. The threaded surface 2 is threadedly connected to a first docking pipe 4. A second extrusion ring 5 is fixedly connected to the inner arc surface of the first docking pipe 4. The inclined surface of the first extrusion ring 3 is in extrusion contact with the inclined surface of the second extrusion ring 5. A second docking pipe 6 is symmetrically arranged at one end of the first docking pipe 4. The second docking pipe 6 is threadedly connected to another drain pipe body 1. A docking fixing mechanism is arranged on the outer sides of the first docking pipe 4 and the second docking pipe 6. The docking fixing mechanism realizes the action of docking and fixing the second docking pipe 6 and the second docking pipe 6 with each other.
[0027] The docking fixing mechanism includes a first docking ring 7 and a second docking ring 8. The first docking ring 7 is fixedly installed on the outer arc surface of the first docking pipe 4. The second docking ring 8 is fixedly installed on the outer arc surface of the second docking pipe 6. The first docking ring 7 is in extrusion contact with the second docking ring 8. A support rod 9 is fixedly installed on the arc surface of the first docking ring 7. A plurality of support rods 9 are arranged in a circumferential array. The opposite surfaces of every two support rods 9 are rotatably connected by a ball bearing to a rotating shaft 10. A rotating block 11 is fixedly connected to the arc surface of the rotating shaft 10. A fixed block 12 is fixedly connected to one end of the rotating block 11. The fixed block 12 is in extrusion contact with one side surface of the second docking ring 8; by setting the first docking ring 7 and the second docking ring 8, through the support rod 9 arranged on the arc surface of the first docking ring 7, the support rod 9 is rotatably connected to the rotating block 11 through the rotating shaft 10. The rotating block 11 is fixedly connected to the fixed block 12. The fixed block 12 is in extrusion contact with the second docking ring 8. Under the action of the rotating block 11 and the fixed block 12, the first docking ring 7 and the second docking ring 8 are initially docked and fixed.
[0028] The outer arc surface of the first docking pipe 4 is fixedly connected with a support plate 13. A plurality of support plates 13 are arranged in a circumferential array. A chute 14 is formed on the surface of the support plate 13. Limiting grooves 15 are formed on both side surfaces of the chute 14. A sliding block 16 is slidably inserted into the inner side wall of the chute 14. Limiting blocks 17 are fixedly connected to both sides of the sliding block 16. The surface of the limiting block 17 is slidably inserted into the inner side wall of the limiting groove 15. A return spring 18 is fixedly connected to the upper end of the sliding block 16. One end of the return spring 18 is fixedly connected to the upper top surface of the chute 14. The upper end of the sliding block 16 is rotationally connected to one end of a rotating block 11 through a pin shaft;
[0029] The sliding block 16 is provided. The sliding block 16 slides up and down in the chute 14 through the limiting block 17 and is rotationally connected to the rotating block 11. When the sliding block 16 moves upward, the rotating block 11 rotates clockwise, causing the fixed block 12 to move downward. When the sliding block 16 moves downward, the rotating block 11 rotates counterclockwise, causing the fixed block 12 to move upward. The return spring 18 is provided to enable the sliding block 16 to be squeezed by the return spring 18 when moving upward.
[0030] Docking holes 19 are formed on one end surface of the first docking ring 7. A plurality of docking holes 19 are arranged in a circumferential array. Docking blocks 20 are fixedly connected to one end surface of the second docking ring 8. A plurality of docking blocks 20 are arranged in a circumferential array. The surface of the docking block 20 is slidably inserted into the inner side wall of the docking hole 19. The inclined surface of the docking block 20 is in sliding contact with the inclined surface of the sliding block 16; The docking block 20 is provided. When the first docking ring 7 and the second docking ring 8 are squeezed and contacted, the docking block 20 is inserted into the docking hole 19, and the inclined surface of the docking block 20 is in sliding contact with the inclined surface of the sliding block 16. When the docking block 20 is inserted into the docking hole 19, the sliding block 16 will move upward, and the fixed block 12 will move downward through the rotating rod and be squeezed and contacted with the second docking ring 8, completing the preliminary docking and fixing of the first docking ring 7 and the second docking ring 8.
[0031] A first threaded hole 21 is formed in the middle of the rotating block 11. Threaded holes 22 are formed on the arc surface of the docking ring. A plurality of threaded holes 22 are arranged in a circumferential array. The first threaded hole 21 corresponds to the threaded hole 22 one by one. Fixed bolts 23 are threadedly connected to both the first threaded hole 21 and the threaded hole 22; After the preliminary docking and fixing of the first docking ring 7 and the second docking ring 8 are completed, the first threaded hole 21 corresponds to the threaded hole 22 one by one. The rotating block 11 is fixed through the fixed bolt 23, making the docking and fixing of the first docking ring 7 and the second docking ring 8 more firm.
[0032] A first sealing ring 24 is squeezed and contacted between the inclined surfaces of the first pressing ring 3 and the second pressing ring 5. A second sealing ring 25 is squeezed and contacted between the first docking pipe 4 and the second docking pipe 6; The first sealing ring 24 and the second sealing ring 25 are provided to prevent the water flowing inside the drain pipe from leaking out.
[0033] Working principle: First, the drain pipes to be docked are respectively threadedly connected to the first docking pipe 4 and the second docking pipe 6. When the first docking pipe 4 and the second docking pipe 6 are docked, the first docking ring 7 and the second docking ring 8 are in extrusion contact, so that the docking block 20 fixedly connected to the second docking ring 8 is inserted into the docking hole 19 opened in the first docking ring 7, so that the inclined surface of the docking block 20 is in sliding contact with the inclined surface of the slider 16, so that the slider 16 moves upward along the chute 14, making the rotating block 11 rotate clockwise, making the fixed block 12 move downward, so that one side of the fixed block 12 is in extrusion contact with the second docking ring 8, making the first docking ring 7 and the second docking ring 8 be preliminarily docked and fixed. In order to make the fixation more firm, the fixing bolt 23 is screwed into the first threaded hole 21 and the second threaded hole 22, so that the rotating block 11 is fixed, and finally the fixation between the first docking ring 7 and the second docking ring 8 is more firm.
[0034] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.
Claims
1. A PVC drain pipe convenient for docking, comprising a drain pipe body (1), characterized in that: One end of the outer arc surface of the drain pipe body (1) is provided with a threaded surface (2). One end of the drain pipe body (1) is fixedly connected with a first extrusion ring (3). The threaded surface (2) is threadedly connected with a first docking pipe (4). The inner arc surface of the first docking pipe (4) is fixedly connected with a second extrusion ring (5). The inclined surface of the first extrusion ring (3) is in extrusion contact with the inclined surface of the second extrusion ring (5). One end of the first docking pipe (4) is symmetrically provided with second docking pipes (6). The second docking pipes (6) are threadedly connected with the other drain pipe body (1). A docking fixing mechanism is arranged on the outer sides of the first docking pipe (4) and the second docking pipes (6). The docking fixing mechanism realizes the action of mutually docking and fixing the second docking pipes (6) and the second docking pipes (6).
2. The PVC drain pipe convenient for docking according to claim 1 is characterized in that: The docking fixing mechanism includes a first docking ring (7) and a second docking ring (8). The first docking ring (7) is fixedly installed on the outer arc surface of the first docking pipe (4). The second docking ring (8) is fixedly installed on the outer arc surface of the second docking pipe (6). The first docking ring (7) is in extrusion contact with the second docking ring (8).
3. The PVC drain pipe facilitating docking according to claim 2, characterized in that: A support rod (9) is fixedly installed on the arc surface of the first docking ring (7). A plurality of the support rods (9) are arranged in a circumferential array. The opposite surfaces of every two support rods (9) are rotatably connected through a ball bearing with a rotating shaft (10). A rotating block (11) is fixedly connected to the arc surface of the rotating shaft (10). One end of the rotating block (11) is fixedly connected with a fixing block (12). The fixing block (12) is in extrusion contact with one side surface of the second docking ring (8).
4. The PVC drain pipe convenient for docking according to claim 3, wherein: A support plate (13) is fixedly connected to the outer arc surface of the first docking pipe (4). A plurality of the support plates (13) are arranged in a circumferential array. A chute (14) is opened on the surface of the support plate (13). Limit grooves (15) are opened on both side surfaces of the chute (14). A slider (16) is slidably inserted into the inner side wall of the chute (14). Limit blocks (17) are fixedly connected to both sides of the slider (16). The surfaces of the limit blocks (17) are slidably inserted into the inner side walls of the limit grooves (15). A return spring (18) is fixedly connected to the upper end of the slider (16). One end of the return spring (18) is fixedly connected to the upper top surface of the chute (14). The upper end of the slider (16) is rotatably connected to one end of the rotating block (11) through a pin shaft.
5. The PVC drain pipe convenient for docking according to claim 4, characterized in that: A docking hole (19) is opened on one end surface of the first docking ring (7). A plurality of the docking holes (19) are arranged in a circumferential array. A docking block (20) is fixedly connected to one end surface of the second docking ring (8). A plurality of the docking blocks (20) are arranged in a circumferential array. The surface of the docking block (20) is slidably inserted into the inner side wall of the docking hole (19). The inclined surface of the docking block (20) is in sliding contact with the inclined surface of the slider (16).
6. The PVC drain pipe convenient for docking according to claim 5, characterized in that: A threaded hole one (21) is formed in the middle of the rotating block (11), and threaded holes two (22) are formed in the arc surface of the docking ring. A plurality of the threaded holes two (22) are arranged in a circumferential array. The threaded hole one (21) corresponds to the threaded hole two (22) one by one. Fixing bolts (23) are threadedly connected to both the threaded hole one (21) and the threaded hole two (22).
7. The PVC drain pipe convenient for docking according to claim 6, characterized in that: A first sealing ring (24) is in extrusion contact between the inclined surfaces of the first extrusion ring (3) and the second extrusion ring (5), and a second sealing ring (25) is in extrusion contact between the first docking pipe (4) and the second docking pipe (6).