Plunger type quick joint

Abstract

The invention discloses a plunger type quick joint. The plunger type quick joint comprises a male joint body and a female joint body, the two parts of the male joint body and the female joint body ofthe quick joint are correspondingly designed into plunger type one-way valves, when the joint bodies are separated in a separated state, the joint bodies use spring elasticity to press a valve elementback to the sealing position to achieve sealing performance, when the joint bodies are combined, the male joint body and the female joint body are mutually jacked by utilizing the mutual action, andthen the male and female parts of the quick joint are opened so as to the achieve the purpose of communication; the dependence of the key sealing performance on the spring elasticity can be eliminated, and smaller springs can be adopted, so that the cost is saved; moreover, a universal O-shaped ring is adopted, and special purchasing is not needed, so that the processing technology and purchasingare simplified; the head end and the tail end of the male joint spring of the male joint body are connected to a valve body and a valve element respectively, the valve element is in a semi-suspended state in the open state, the valve element cannot be in direct contact with the inner wall of the valve body during opening and closing processes, and then noise and abrasion are avoided.

Description

technical field [0001] The invention relates to a gas-liquid mixing system of refrigeration equipment and product equipment of other piping systems, and more specifically relates to a plunger type quick joint. Background technique [0002] The split type air conditioner includes an indoor unit and an outdoor unit. During installation, it is necessary to install a connecting pipe between the indoor unit and the outdoor unit so that the refrigerant fluid can circulate between the two units. When installing an existing air conditioner, one method is: Tighten the copper joint and the copper nut of the connecting pipe so that the inner cone surface of the bell mouth of the connecting pipe head is in contact with the outer cone surface of the copper joint; The inner tapered surface of the bell mouth of the pipe head is in contact with the outer clamp surface of the copper joint to seal; then the stop valve core can be opened to connect the indoor unit and the outdoor unit, and the...

AI Technical Summary

Problems solved by technology

[0002] The split type air conditioner includes an indoor unit and an outdoor unit. During installation, it is necessary to install a connecting pipe between the indoor unit and the outdoor unit so that the refrigerant fluid can circulate between the two units. When installing an existing air conditioner, one method is: Tighten the copper joint and the copper nut of the connecting pipe so that the inner cone surface of the bell mouth of the connecting pipe head is in contact with the outer cone surface of the copper joint; The inner tapered surface of the bell mouth of the pipe head is in contact with the outer clamp surface of the copper joint to seal; then the stop valve core can be opened to connect the indoor unit and the outdoor unit, and the connection is relatively convenient; however, since the indoor unit and the connecting pipe are not filled with refrigerant (refrigerant), so before connecting the air conditioner, it is necessary to extract the gas in the indoor unit and the connecting pipe, or use the refrigerant liquid (refrigerant) inside the outdoor unit to drain the air conditioner before it can run; this operation is more complicated, and non-professionals cannot install it. Installation difficulty and technical requirements are relatively high

[0003] However, in the prior art, the seal between the male joint spool and the valve body adopts a soft conical seal, and the elastic force of the spring compresses the two conical surfaces to generate a sealing pretightening force; the seal between the female joint spool and the valve body adopts a soft end face Sealing, relying on the elastic force of the spring compression makes the two end faces produce sealing pre-tightening force; by adopting this technology, the spring will produce creep and elastic force decay under the long-term compression state, which directly affects the sealing performance of the joint; and the male joint valve The core is installed and guided by two guide gaskets before and after the spring, so that when the valve core is opened and closed, one of the gaskets will be driven to move at the same time and cause friction with the inner cavity wall of the valve, which is prone to noise and wear

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