Stain-resistant pipe fitting joint for drainage blind pipe

The combined design of the inner convex buckle, sealing ring and outer convex buckle limiting structure solves the sealing and pull-out resistance problems at the connection between the drainage blind pipe and the direct connector, and improves the stain resistance.

CN224261152UActive Publication Date: 2026-05-19TIEKE CONSTRUCTION TECHNOLOGY (YIXING) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
TIEKE CONSTRUCTION TECHNOLOGY (YIXING) CO LTD
Filing Date
2025-07-18
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

Existing blind drain pipes and direct connection joints are susceptible to the infiltration of media dirt, leading to a decrease in sealing and connection strength.

Method used

The design incorporates an inner convex buckle and a sealing ring, combined with an outer convex buckle and a clamping structure to enhance sealing and pull-out resistance. A stain-resistant coating is applied to the inner side of the direct head body.

Benefits of technology

It improves the sealing and pull-out resistance of the connection between the drainage blind pipe and the direct connector, reduces the infiltration of media dirt, and enhances the stain resistance of the connection.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224261152U_ABST
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Abstract

The utility model relates to the technical field of drainage blind pipes, and provides a stain-resistant pipe fitting joint for a drainage blind pipe, which is characterized in that sealing rubber rings are arranged at two ends of a straight joint body and positioned in sealing ring seats, and an inner convex buckle is annularly arranged on the inner wall of the straight joint body. The inner convex buckle is matched with the drainage blind pipe body to fix the sealing ring seat in the straight joint body, and meanwhile, the sealing rubber ring on the inner side of the sealing ring seat can extrude the drainage blind pipe body, so that the sealing performance between the straight joint body and the drainage blind pipe body can be effectively improved through the matching of the inner convex buckle and the drainage blind pipe body; according to the design, the pipe hoop is arranged on the outer side of the straight joint body in the sleeving mode and located between the outwards-protruding buckle and the sealing ring base, the outwards-protruding buckle is matched with the sealing ring base so that the pipe hoop can be effectively limited on the outer side of the straight joint body, and meanwhile the pipe hoop is fastened inwards so that the anti-drawing force of the drainage blind pipe body in the straight joint body can be effectively increased; therefore, the connection strength is improved.
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Description

Technical Field

[0001] This utility model relates to the field of drainage blind pipe technology, specifically to a stain-resistant pipe fitting connector for drainage blind pipes. Background Technology

[0002] Stain-resistant direct connectors for blind drain pipes play an important role in drainage systems. Stain-resistant direct connectors can effectively reduce the accumulation of dirt and debris at the interface of blind drain pipes, thereby ensuring smooth drainage. However, how to improve the sealing performance at the connection between the blind drain pipe and the direct connector, and at the same time increase the pull-out force between the two, is an urgent problem to be solved.

[0003] Currently, most drainage blind pipes and connecting straight connectors on the market use a direct plug-in method. This design flaw can lead to dirt in the medium seeping into the space between the drainage blind pipe and the straight connector during long-term use, thus affecting the connector's resistance to contamination. Utility Model Content

[0004] This utility model proposes a stain-resistant pipe fitting for drainage blind pipes, which solves the problem that in the long-term use of existing technology, dirt in the medium can easily seep into the gap between the drainage blind pipe and the direct connector, thus affecting the stain resistance of the connector.

[0005] The technical solution of this utility model is as follows: A stain-resistant pipe fitting for a blind drainage pipe includes a connecting pipe assembly. The connecting pipe assembly includes a direct head body, and further includes an outwardly protruding buckle fixedly connected in an annular shape to the outside of the direct head body. The connecting pipe assembly also includes an inwardly protruding buckle fixedly connected in an annular shape to the inside of the direct head body. The connecting pipe assembly also includes sealing ring seats symmetrically fixedly connected to both ends of the direct head body. The connecting pipe assembly also includes sealing rubber rings snapped into the inner side of each sealing ring seat.

[0006] Preferably, a pipe clamp is also fitted on the outer side of the direct head body at the middle of the protruding buckle and the sealing ring seat.

[0007] Preferably, a drainage blind pipe body is inserted into the inner side of the direct head body.

[0008] The beneficial effects of this utility model are as follows:

[0009] 1. This utility model has sealing rings at both ends of the direct head body located inside the sealing ring seat, and an inner protruding buckle is provided in an annular shape on the inner wall of the direct head body. When the drain blind pipe body is inserted into the direct head body, the sealing ring seat can be fixed in the direct head body by the inner protruding buckle in conjunction with the drain blind pipe body. At the same time, the sealing ring on the inner side of the sealing ring seat will squeeze the drain blind pipe body. Through the cooperation of the above two, the sealing performance between the direct head body and the drain blind pipe body can be effectively improved.

[0010] 2. In this utility model, a pipe clamp is fitted on the outside of the direct connector body between the protruding buckle and the sealing ring seat. The pipe clamp can be effectively limited on the outside of the direct connector body by the protruding buckle and the sealing ring seat. At the same time, the inward tightening of the pipe clamp can effectively increase the tensile strength of the drainage blind pipe body in the direct connector body, thereby improving the connection strength between the two.

[0011] 3. This design features a uniform coating of stain-resistant material on the inner side of the direct head body to increase its stain resistance during media flow. Attached Figure Description

[0012] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0013] Figure 1 This is a schematic diagram of the overall device of this utility model;

[0014] Figure 2 This is a schematic diagram showing the disassembled connection pipe assembly, pipe clamp, and drainage blind pipe of this utility model;

[0015] Figure 3 This is a schematic diagram of the interior of the direct head body and the inner protruding buckle of this utility model;

[0016] In the diagram: 1. Connecting pipe assembly; 11. Direct connector body; 12. Outward protruding buckle; 13. Sealing ring seat; 131. Sealing rubber ring; 14. Inward protruding buckle; 2. Pipe clamp; 3. Drainage blind pipe body. Detailed Implementation

[0017] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0018] Please see Figure 1 and Figure 2 and Figure 3 This utility model provides a technical solution: a stain-resistant pipe fitting for a drainage blind pipe, including a connecting pipe assembly 1, the connecting pipe assembly 1 including a direct head body 11, the connecting pipe assembly 1 also including an outwardly protruding buckle 12 fixedly connected in an annular shape to the outside of the direct head body 11, the connecting pipe assembly 1 also including an inwardly protruding buckle 14 fixedly connected in an annular shape to the inside of the direct head body 11, the connecting pipe assembly 1 also including sealing ring seats 13 symmetrically fixedly connected to both ends of the direct head body 11, and the connecting pipe assembly 1 also including sealing rubber rings 131 snapped into the inside of each sealing ring seat 13.

[0019] Please see Figure 1 and Figure 2 and Figure 3 A pipe clamp 2 is also fitted on the outer side of the direct head body 11, located in the middle of the protruding buckle 12 and the sealing ring seat 13;

[0020] The protruding buckle 12, in conjunction with the sealing ring seat 13, can effectively limit the pipe clamp 2 on the outside of the direct head body 11. At the same time, the inward tightening of the pipe clamp 2 can effectively increase the pull-out resistance of the drainage blind pipe body 3 within the direct head body 11, thereby improving the connection strength between the two.

[0021] Please see Figure 1 and Figure 2 and Figure 3 The drain blind pipe body 3 is inserted into the inner side of the direct head body 11.

[0022] When the drain blind pipe body 3 is inserted into the direct head body 11, the inner protruding buckle 14 can cooperate with the drain blind pipe body 3 to complete the fixing of the sealing ring seat 13 in the direct head body 11. At the same time, the sealing rubber ring 131 on the inner side of the sealing ring seat 13 will squeeze the drain blind pipe body 3. Through the cooperation of the above two, the sealing performance between the direct head body 11 and the drain blind pipe body 3 can be effectively improved.

[0023] This design is applicable to shapes such as: straight connectors, L-shaped elbows, T-shaped tees, cross-shaped four-way connectors, and three-dimensional four-way connectors.

[0024] The working principle of this utility model:

[0025] First, the staff takes out the drain blind pipe body 3 and inserts the drain blind pipe body 3 into the direct head body 11. The drain blind pipe body 3 can be installed in the direct head body 11 by cooperating with the inner protruding buckle 14. In particular, when the drain blind pipe body 3 is inserted into the direct head body 11, the sealing rubber ring 131 located inside the sealing ring seat 13 can squeeze the drain blind pipe body 3 to improve the sealing of the connection between the two.

[0026] After the drainage blind pipe body 3 is installed inside the direct connector body 11, remove the pipe clamp 2 and place it on the outside of the direct connector body 11 at the position between the sealing ring seat 13 and the protruding buckle 12. The sealing ring seat 13 and the protruding buckle 12 can limit the pipe clamp 2 on the outside of the direct connector body 11. Then, use a screwdriver or wrench to tighten the screws on the pipe clamp 2 in the target direction. This design can complete the fastening of the pipe clamp 2 in the direct connector body 11, and the fastened pipe clamp 2 can effectively apply a tightening force inward, thereby improving the tensile strength of the drainage blind pipe body 3 and the connecting pipe assembly 1.

[0027] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A stain-resistant pipe fitting for a blind drainage pipe, comprising a connecting pipe assembly (1), characterized in that, The connecting tube assembly (1) includes a direct head body (11), and the connecting tube assembly (1) also includes an outwardly protruding buckle (12) that is fixedly connected in an annular shape to the outside of the direct head body (11), and an inwardly protruding buckle (14) that is fixedly connected in an annular shape to the inside of the direct head body (11). The connecting tube assembly (1) also includes sealing ring seats (13) that are symmetrically fixedly connected to both ends of the direct head body (11), and the connecting tube assembly (1) also includes sealing rubber rings (131) that are snapped into the inside of each sealing ring seat (13).

2. The stain-resistant pipe fitting for a blind drainage pipe according to claim 1, characterized in that, The outer side of the direct head body (11) is also fitted with a pipe clamp (2) in the middle of the protruding buckle (12) and the sealing ring seat (13).

3. A stain-resistant pipe fitting for a blind drainage pipe according to claim 1, characterized in that, The drain blind pipe body (3) is inserted into the inner side of the direct head body (11).