Push-in type quick pipe connecting piece

Abstract

The invention relates to a pipe connecting piece, in particular to a push-in type quick pipe connecting piece, which comprises a body and is characterized in that: a seal ring and a pipeline locking device are sequentially embedded in the body; the pipeline locking device is in pressure welding fit with the seal ring; the inner wall of the body is provided with a groove; a bump matching with the groove is arranged on the outer wall of the pipeline locking device; and the bump is in buckling fit with the groove. In the push-in type quick pipe connecting piece, a claw sheet has an independent structure and does not need injection molding, so the push-in type quick pipe connecting piece solves the problem that plastics surround the claw sheet in an injection molding process. Because the inner wall of the body is provided with the groove and the bump is arranged at a corresponding position on the outer wall of a fixed ring, the pipeline locking device is fixedly connected with the pipe connecting piece body through the buckling of the bump and the groove. Because the pipeline locking device adopts a buckling way entirely and does not need cementing or welding, the assembly is convenient. The push-in type quick pipe connecting piece of the invention completes the connection between a pipe and the pipe connecting piece only by inserting the pipe into the pipe connecting piece, and has the advantages of simple structure, convenience, practicability, stable connection and good leak tightness.

Description

technical field [0001] The invention relates to a pipe joint, in particular to a push-in quick pipe joint. Background technique [0002] For related products such as water purifiers, the sealing of pipelines is very important. Most products are prone to water and air leakage at the pipe joints, which has brought a lot of unnecessary troubles to consumers and manufacturers. Pipe fittings on the market are generally divided into two types: the original nut locking type fittings and ordinary claw type fittings with locking pieces. [0003] For the nut lock type fittings, there are the following defects: 1. Because it is a clamping connection, the quality requirements of the pipe are high, and the diameter of the pipe is slightly larger than the normal specification, and it may not be inserted in, and the diameter is slightly smaller, and the connection is not good. Stable, causing water leakage; 2. The coaxiality of the pipe is required to be high. If the thickness of the pipe...

AI Technical Summary

Problems solved by technology

[0003] For the nut lock type fittings, there are the following defects: 1. Because it is a clamping connection, the quality requirements of the pipe are high, and the diameter of the pipe is slightly larger than the normal specification, and it may not be inserted in, and the diameter is slightly smaller, and the connection is not good. Stable, causing water leakage; 2. The coaxiality of the pipe is required to be high. If the thickness of the pipe wall is uneven, the force will be uneven, resulting in water leakage; 3. The sealing performance is related to the tightness of the nut. If it is not tightened tightly, water will leak. A pipe needs to be tightened according to the requirements, which leads to low work efficiency and poor product stability; 4. The hardness of the pipe material is high. If the hardness is not enough, the same pipe will be used multiple times, and the connection will be dented. Water leaks, which increases the cost of replacing the pipe; 5. When installing the pipe, a pipe plug needs to be installed in the pipe to prevent the pipe from being deformed, and adding a pipe plug greatly reduces work efficiency. The pipe plug is not easy to be found during the factory test, which increases the defective rate of the product; 6. After the pipe plug is added to the pipe, its cross-sectional area decreases and the flow rate also decreases, which increases the pressure of the pipe and shortens the length of time. pipe life

[0004] For ordinary claw-type pipe joints with locking pieces, although the pipes are convenient to insert and connect, there are also the following defects: 1. There are only 4 claws on the claws to engage with the pipes, and there are fewer clamping parts. When there is pressure, the pipes will The fixed position will be offset, causing the pipe to tilt, resulting in water leakage; 2. The claw piece connector and the pipe joint body are in an expansion connection, and the connection quality is unstable. When the pressure in the pipe increases, the claw piece connector will move toward the The outer deviation causes the pipe to tilt, resulting in water leakage; 3. The connection between the claw and the claw is injection-molded, and the plastic will wrap the claw during injection molding, so that when the claw and the pipe are clamped, a false card will occur, and the claw is connected The production process of the parts is slow and the production efficiency is low; 4. After the claw piece connecting piece is connected with the pipe fitting body, the outside needs to be sleeved with a locking piece to increase the stability of the product. When the pressure is small, the pipe will not produce due to the action of the locking piece Tilting, when the pressure is high, the claw piece connecting piece will deviate outwards, at this time the locking piece is easy to fall off, and the locking piece will cause the pipe to tilt after falling off, resulting in water leakage

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