Quick coupling

Abstract

The invention belongs to the field of pipe connection, and particularly relates to a rapid coupling which is applied to the connection pipes and valves of fluids such as gas and liquid. The quick coupling comprises three components, namely a connection body, a sealing ring and a multifunctional movable sleeve; the three components can be freely assembled, disassembled and changed; the sealing ring is arranged between a ring-shaped boss in the connection body and a fixed limiting pin of the multifunctional movable sleeve and only moves in the range of the sealing wall of the connection body; the quantity of square side through holes of the connection body is equal to the quantity of elastic arm barb claws on the multifunctional movable sleeve; the elastic arm barb claws are correspondingly arranged and hooked on the hook walls of the square side through holes; and the inclined planes of the square side through holes of the connection body are staggered away from the inclined planes of the barb claws of the multifunctional movable sleeve. The quick coupling provided by the invention has the effects of overcoming the defects of the conventional quick couplings, enabling the mounting and dismounting between the connection pipes as well as between the connection pipes and the valves to be convenient and quick, being simple in structure, simple in manufacturing process and high in production efficiency, reducing the production cost and having wide application.

Description

technical field [0001] The invention belongs to the field of pipeline connection, in particular to a quick connector used between connecting pipes for gas, liquid and other fluids or between connecting pipes and valves. Background technique [0002] The connections between plastic pipes and plastic pipes, plastic pipes and metal pipes or valves used in daily life are mostly connected by pressure ring locking, hot-melt, bonding, etc. Hot-melt connections require special tools, installation It is more troublesome, and it is not suitable for users to install and replace the connecting pipe by themselves. The connecting pipe bonded by adhesive is easy to produce harmful substances and affect the water quality after a long time. When connecting and disassembling, the operation is very troublesome, the use cost is high, and the quality of the interface cannot be guaranteed. [0003] In addition, other quick connectors are also used for pipeline connection, but their structure is m...

AI Technical Summary

Problems solved by technology

[0002] The connections between plastic pipes and plastic pipes, plastic pipes and metal pipes or valves used in daily life are mostly connected by pressure ring locking, hot-melt, bonding, etc. Hot-melt connections require special tools, installation It is more troublesome, and it is not suitable for users to install and replace the connecting pipe by themselves. The connecting pipe bonded by adhesive is easy to produce harmful substances and affect the water quality after a long time. When connecting and disassembling, the operation is very troublesome, the use cost is high, and the quality of the interface cannot be guaranteed.

[0003] In addition, other quick connectors are also used for pipeline connection, but their structure is more complicated, there are many components, and the components cannot be disassembled freely. The production process is cumbersome, the efficiency is low, the cost is high, and the function is single.

Such as quick connectors on the market, figure 1 It is composed of four parts: body 1, sealing ring 2, cap 3 and buckle 4, figure 2 It is composed of six parts: body 1, sealing ring 2, fixed guide ring 5, clip 6, cap 7 and sleeve 8. These two quick joints are welded together between the parts, which are prone to relics or impurities to adhere to the seal If there is a power outage, it cannot be produced. It must be produced in the area of ​​the associated equipment. It is very passive and can only function as a pipe connection and as a channel for gas and liquid.

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