Sealed socket drain elbow

Abstract

This utility model provides a sealed socket-type drainage elbow, including an elbow body, a socket disposed on the inner wall of the elbow body, a fixing ring seat fixedly disposed on the inner wall of the socket, a supporting protrusion ring fixedly disposed on the inner wall of the socket and located on the right side of the fixing ring seat, and an elastic sealing sheet annularly disposed on the fixing ring seat for sealing the gap between the supporting protrusion ring and the straight pipe when the straight pipe is inserted into the socket and is pushed and squeezed between the straight pipe and the supporting protrusion ring. Compared with the use of a sealing lip, the sealing is formed by the compression of the elastic sealing sheet by the straight pipe and the supporting protrusion ring. Even when the elastic sealing sheet ages and deforms, it can still close the gap by compression to form a sealing effect, and it is not easy to lose the sealing effect and cause water leakage.

Description

Technical Field

[0001] This utility model relates to the field of drainage connector technology, specifically to a sealed, receptacle-type drainage elbow. Background Technology

[0002] Socket-type drain elbows are connectors used in drainage piping systems to change the direction of fluid flow. Their structural feature is a socket at one or both ends for inserting and securing a straight pipe section (such as PVC or PPR pipes). These elbows are widely used in building water supply and drainage systems (such as bathroom drainage and kitchen pipes), municipal engineering, and industrial pipelines. Their core function is to ensure smooth fluid flow while providing a reliable sealed connection.

[0003] In existing technologies, the connection between water pipes and socket elbows mainly adopts a socket structure: the end of the water pipe is inserted into the socket of the elbow, and the two are sealed by a pre-set sealing lip. The sealing lip achieves the sealing effect by radial compression deformation generated by the inclined structure on the inner side of the elbow socket when the pipe is inserted.

[0004] Although the sealing lip can achieve a sealing effect through radial compression deformation, the drawback of this sealing method is that after the sealing lip ages, the lip is prone to local warping. When the straight pipe is inserted into the drain elbow, the warped sealing lip is difficult to fit against the outer wall of the straight pipe, causing the sealing effect to be lost and resulting in water leakage. Utility Model Content

[0005] The purpose of this utility model is to provide a sealed, receptacle-type drainage elbow to address the defects and shortcomings of existing technologies.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a sealed socket-type drainage elbow, comprising an elbow body, a socket disposed on the inner wall of the elbow body, a fixing ring seat fixedly disposed on the inner wall of the socket, a supporting protrusion ring fixedly disposed on the inner wall of the socket and located on the right side of the fixing ring seat, and an elastic sealing sheet annularly disposed on the fixing ring seat for sealing the gap between the supporting protrusion ring and the straight pipe by being pushed and squeezed between the straight pipe and the supporting protrusion ring after the straight pipe is inserted into the socket.

[0007] A further improvement is that an elastic connector is provided between the elastic sealing sheet and the fixed ring seat to reduce the risk of breakage at the connection end between the elastic sealing sheet and the fixed ring seat when the elastic sealing sheet bends toward the supporting protrusion ring.

[0008] A further improvement is that the left and right ends of the elastic connector are provided with arc surfaces to facilitate bending of the elastic connector.

[0009] A further improvement is that the elastic connector is made of hydrogenated nitrile rubber or polyurethane rubber.

[0010] A further improvement is that the elastic sealing sheet is tilted.

[0011] A further improvement is that the elastic sealing sheet is a natural rubber sheet, a butadiene rubber sheet, or a silicone sheet.

[0012] A further improvement is that the supporting convex ring is an arc-shaped convex ring.

[0013] A further improvement is that the fixing ring seat and the bearing joint are connected by a disassembly device.

[0014] A further improvement is made to the disassembly device, which includes at least two bolt holes annularly formed on the bearing joint at the fixed ring end, a corresponding threaded hole formed on the fixed ring for the fixed ring to be inserted into the inner wall of the bearing joint after the fixed ring is inserted into the inner wall of the bearing joint, a connecting bolt threaded to the corresponding threaded hole and located in the threaded hole, the threaded part of the connecting bolt being clearance-fitted with the threaded hole, the threaded part of the connecting bolt being threadedly connected to the corresponding threaded hole, and the fixed ring being clearance-fitted with the inner wall of the bearing joint.

[0015] A further improvement is that the socket is provided with a sealing ring for sealing the gap between the straight pipe end face and the socket after the straight pipe is inserted into the socket.

[0016] After adopting the above technical solution, the beneficial effects of this utility model are as follows: When the straight pipe is inserted into the socket, the outer wall of the straight pipe is pressed and contacted with the elastic sealing sheet. As the straight pipe is pushed in, the elastic sealing sheet is pushed and pressed between the straight pipe and the supporting convex ring to seal the gap between the supporting convex ring and the straight pipe. Compared with the use of a sealing lip, the sealing is formed by the compression of the elastic sealing sheet by the straight pipe and the supporting convex ring. Even if the elastic sealing sheet ages and deforms, it can still close the gap by compression to form a sealing effect, and it is not easy to lose the sealing effect and cause water leakage.

[0017] Further benefits: The elastic sealing strip can also guide the insertion of the straight pipe after it has been inserted into the connector (by the inner diameter formed by the elastic sealing strip, which is slightly smaller than or the same as the outer diameter of the straight pipe), so that the central axis of the inserted straight pipe is kept as close as possible to the central axis of the connector.

[0018] Further benefits: When it is necessary to remove the retaining ring from the connector for component replacement or repair, the connecting bolt can be turned in the reverse direction to disengage it from the corresponding threaded hole, and then the connecting bolt can be removed from the bolt socket. Each connecting bolt can be removed in the same way, and then the retaining ring can be pulled outward to remove it from the connector. During installation, first align the bolt socket and the corresponding threaded hole with parallel alignment, then push the retaining ring into the connector in parallel alignment. Fine-tune the retaining ring to align the bolt socket with the corresponding threaded hole, then insert the connecting bolt into the bolt socket and thread it into the corresponding threaded hole. Turn the connecting bolt in the forward direction to fix the retaining ring to the inner wall of the connector. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a front view of the present invention; Figure 2 This is a front sectional view of the present invention; Figure 3 This is a structural schematic diagram of the bearing joint, fixing ring seat, supporting convex ring, elastic sealing sheet, and elastic connecting piece in this utility model; Figure 4 It corresponds Figure 3 Another state diagram; Figure 5 It corresponds Figure 4 Enlarged view of part A; Figure 6 It corresponds Figure 3 Enlarged view of part B.

[0021] Explanation of reference numerals in the attached drawings: 1. Elbow body; 2. Socket joint; 3. Fixing ring seat; 4. Supporting convex ring; 5. Elastic sealing sheet; 6. Elastic connecting piece; 7. Arc surface; 8. Bolt insertion hole; 9. Corresponding threaded hole; 10. Connecting bolt; 11. Sealing convex ring. Detailed Implementation

[0022] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0023] See Figures 1 to 6As shown, the technical solution adopted in this specific embodiment is: a sealed receiving type drainage elbow, including an elbow body 1, a receiving joint 2 disposed on the inner wall of the elbow body 1, a fixing ring seat 3 fixedly disposed on the inner wall of the receiving joint 2, a supporting protruding ring 4 fixedly disposed on the inner wall of the receiving joint 2 and located on the right side of the fixing ring seat 3, and an elastic sealing sheet 5 annularly disposed on the fixing ring seat 3 for sealing the gap between the supporting protruding ring 4 and the straight pipe by being pushed and squeezed between the straight pipe and the supporting protruding ring 4 after the straight pipe is inserted into the receiving joint 2.

[0024] The fixing ring and the supporting protruding ring 4 are fixedly installed on the socket joint 2 by adhesive bonding, or integrally formed with the socket joint 2. The supporting protruding ring 4 is a plastic ring. The inner diameter of the supporting protruding ring 4 is larger than the outer diameter of the inserted straight pipe, and the distance between them is between 1-10mm. At this time, the thickness of the elastic sealing sheet 5 should be greater than or equal to the distance between them to ensure that when the straight pipe is pressed between the supporting protruding ring 4, it can deform under pressure to seal the gap between the straight pipe and the supporting protruding ring 4. The greater the thickness of the elastic sealing sheet 5 is than the distance between them, the greater the resistance to the straight pipe insertion into the socket joint 2, and the better it can fix the straight pipe in the socket joint 2 and the better the sealing effect of the gap. Conversely, if the thickness is slightly greater than the distance between them, the friction of the straight pipe in the socket joint 2 is smaller, but it can still achieve a sealing effect. During use, when the straight pipe is inserted into the socket joint 2, it will push the elastic sealing sheet 5 to squeeze between the straight pipe and the supporting protruding ring 4, thereby forming a tight seal and effectively preventing leakage problems during drainage.

[0025] An elastic connector 6 is provided between the elastic sealing sheet 5 and the fixed ring seat 3 to reduce the risk of breakage at the connection end between the elastic sealing sheet 5 and the fixed ring seat 3 when the elastic sealing sheet 5 bends toward the supporting protruding ring 4.

[0026] The design of the elastic connector 6 aims to enhance the structural stability of the elastic sealing plate 5 during compression deformation. Specifically, when the straight pipe is inserted into the connector 2 and pushes the elastic sealing plate 5 towards the supporting convex ring 4, the elastic connector 6 can effectively disperse stress, reducing the stress concentration at the connection end between the elastic sealing plate 5 and the fixed ring seat 3, thereby reducing the risk of breakage. Furthermore, the elastic connector 6 also possesses a certain degree of elastic recovery capability, assisting the elastic sealing plate 5 in returning to its original shape after compression deformation, ensuring a long-lasting and stable sealing effect. This innovative design not only improves the sealing performance of the drainage elbow but also extends its service life.

[0027] The left and right ends of the elastic connector 6 are provided with arc surfaces 7 to facilitate bending of the elastic connector 6.

[0028] The elastic connector 6 is made of hydrogenated nitrile rubber or polyurethane rubber. Hydrogenated nitrile rubber is commonly used in seals, pipes, and other applications requiring wear resistance, oil resistance, and the ability to withstand frequent bending. Polyurethane rubber has the highest tensile strength (30-50 MPa), and its molecular chains consist of alternating hard and soft segments, giving it excellent tensile and tear resistance. Due to its inherent tear and tensile strength properties, compared to directly connecting the elastic sealing sheet 5 to the fixing ring seat 3, it can further reduce the occurrence of breakage.

[0029] like Figure 3 As shown, the elastic sealing sheet 5 is set at an angle.

[0030] The elastic sealing sheet 5 is made of natural rubber, butadiene rubber, or silicone. Natural rubber has excellent resilience, tensile strength, elongation, abrasion resistance, tear resistance, and compression set compared to most synthetic rubbers. It is suitable for making tires, shock absorbers, buffer ropes, and sealing components. Butadiene rubber, which is commonly used, has good cold resistance, abrasion resistance, and resilience. Silicone products, due to their softness, durability, water and moisture resistance, have a certain degree of pressure resistance and can maintain their original shape and function.

[0031] The supporting convex ring 4 is a circular arc convex ring.

[0032] The fixed ring seat 3 and the bearing joint 2 are connected by a disassembly device.

[0033] The disassembly device includes at least two bolt holes annularly formed on the bearing joint 2 at the end of the fixed ring seat 3, corresponding threaded holes 9 formed on the fixed ring seat 3 for the fixed ring seat 3 to be inserted into the inner wall of the bearing joint 2 after the bolt holes are positioned, a connecting bolt 10 threadedly connected to the corresponding threaded hole 9 and located in the bolt hole 8, the threaded part of the connecting bolt 10 being clearance-fitted with the bolt hole 8, the threaded part of the connecting bolt 10 being threadedly connected to the corresponding threaded hole 9, and the fixed ring seat 3 being clearance-fitted with the inner wall of the bearing joint 2.

[0034] The socket joint 2 is provided with a sealing protrusion 11 for sealing the gap between the side end face of the straight pipe and the socket joint 2 after the straight pipe is inserted into the socket joint 2. The sealing protrusion 11 is an arc-shaped protrusion and is arranged in a ring on the socket joint 2. The sealing protrusion 11 is a rubber ring or a silicone ring. The sealing performance between the drain elbow and the straight pipe can be further improved by sealing the protrusion 11.

[0035] The working principle of this utility model is as follows: When the straight pipe is inserted into the socket 2, the outer wall of the straight pipe is pressed against the elastic sealing plate 5. As the straight pipe is pushed in, the elastic sealing plate 5 is pushed and pressed between the straight pipe and the supporting convex ring 4 to seal the gap between the supporting convex ring 4 and the straight pipe. Compared with the use of a sealing lip, the seal is formed by the compression of the elastic sealing plate 5 by the straight pipe and the supporting convex ring 4. Even if the elastic sealing plate 5 ages and deforms, it can still close the gap by compression to form a sealing effect, and it is not easy to lose the sealing effect and cause water leakage. The setting of the elastic sealing plate 5 can also provide guidance for the insertion of the straight pipe after it is inserted into the socket (through the inner diameter formed by the elastic sealing plate 5, which is slightly smaller than or the same as the outer diameter of the straight pipe), so that the central axis of the inserted straight pipe is kept as close as possible to the central axis of the socket 2. When it is necessary to remove the retaining ring 3 from the connector 2 for component replacement or repair, the connecting bolt 10 can be turned in the reverse direction to disengage it from the corresponding threaded hole 9, and then the connecting bolt 10 can be removed from the bolt socket. Each connecting bolt 10 can be removed in the same way, and then the retaining ring 3 can be pulled outward to remove it from the connector 2. During installation, first align the bolt socket and the corresponding threaded hole 9 with parallel positions, then push the retaining ring 3 into the connector 2 in parallel, fine-tune the retaining ring 3 to align the bolt socket with the corresponding threaded hole 9, then insert the connecting bolt 10 into the bolt socket and connect it with the corresponding threaded hole 9, and turn the connecting bolt 10 in the forward direction to fix the retaining ring 3 to the inner wall of the connector 2.

[0036] This utility model aims to protect the product's structure. The model numbers of the individual components are not protected by this utility model and are considered public knowledge. Any component on the market that can achieve the functions described above can be used as a type of sealed, receptacle-type drainage elbow. Therefore, the model numbers and other parameters of the components are not described in detail in this utility model. The contribution of this utility model lies in the scientific combination of the various components.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions provided are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents. Any aspects of this utility model not detailed herein are well-known to those skilled in the art.

Claims

1. A sealed, socket-type drainage elbow, comprising an elbow body and a socket disposed on the inner wall of the elbow body, characterized in that: It also includes a fixing ring seat fixedly disposed on the inner wall of the socket, a support protrusion ring fixedly disposed on the inner wall of the socket and located on the right side of the fixing ring seat, and an elastic sealing sheet annularly disposed on the fixing ring seat for being pushed and squeezed between the straight pipe and the support protrusion ring by the straight pipe after the straight pipe is inserted into the socket, so as to seal the gap between the support protrusion ring and the straight pipe.

2. The sealed socket-type drainage elbow according to claim 1, characterized in that: An elastic connector is provided between the elastic sealing sheet and the fixed ring seat to reduce the risk of breakage at the connection end between the elastic sealing sheet and the fixed ring seat when the elastic sealing sheet bends toward the supporting protrusion ring.

3. A sealed, socket-type drainage elbow according to claim 2, characterized in that: The left and right ends of the elastic connector are provided with arc surfaces to facilitate bending of the elastic connector.

4. A sealed, socket-type drainage elbow according to claim 2, characterized in that: The elastic connector is made of hydrogenated nitrile rubber or polyurethane rubber.

5. A sealed, socket-type drainage elbow according to claim 1, characterized in that: The elastic sealing sheet is set at an angle.

6. A sealed, socket-type drainage elbow according to claim 1, 2, 3, 4, or 5, characterized in that: The elastic sealing sheet is a natural rubber sheet, a butadiene rubber sheet, or a silicone sheet.

7. A sealed, socket-type drainage elbow according to claim 1, characterized in that: The supporting convex ring is an arc-shaped convex ring.

8. A sealed, socket-type drainage elbow according to claim 1, characterized in that: The fixed ring seat and the bearing joint are connected by a disassembly device.

9. A sealed, socket-type drainage elbow according to claim 8, characterized in that: The disassembly device includes at least two bolt holes annularly formed on the bearing joint at the fixed ring end, corresponding threaded holes formed on the fixed ring for the fixed ring to be inserted into the inner wall of the bearing joint after the fixed ring is inserted into the inner wall of the bearing joint, a connecting bolt threaded into the corresponding threaded hole and located in the threaded hole, the threaded part of the connecting bolt being clearance-fitted with the threaded hole, the threaded part of the connecting bolt being threadedly connected with the corresponding threaded hole, and the fixed ring being clearance-fitted with the inner wall of the bearing joint.

10. A sealed, socket-type drainage elbow according to claim 1, characterized in that: The socket is provided with a sealing ring for sealing the gap between the straight pipe end face and the socket after the straight pipe is inserted into the socket.

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