Working principle and application of hydraulic hose joint

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Abstract:The stainless steel pipe joint is a connecting too...

The stainless steel pipe joint is a connecting tool between the pipeline and the pipeline, and the connecting point between the component and the pipeline that can be disassembled and assembled. It acts as an indispensable and important figure in the pipe fittings. It is one of the two primary components of hydraulic pipelines. Flared pipe joints are used for linear connection of instruments, etc. The connection forms are socket welding or threaded connection. It is mainly used for small-caliber low-pressure pipelines, used in places that require frequent assembly and disassembly, or as the final adjustment of the threaded pipe fittings. Related products are fast, easy and excellent. The structure should be metal surface contact seal structure. The structure of gasket seal is generally used to transport water, oil, air and other general pipelines, and it is made of malleable cast iron. In addition, operating requirements and price are also factors considered when selecting.


Since hydraulic hose joints are classified as detachable connecting elements, they must meet the requirements of stable connection, strong sealing, reasonable size, small pressure loss, good process performance, etc., but also need to meet the requirements of convenient disassembly and assembly. Claim. Therefore, do not underestimate the small pipe joints, because only their existence can support the existence of the entire hydraulic system.

There are many types of hydraulic hose joints. Commonly used hydraulic hose joints can generally be divided into two types: hard pipe joints and hose joints. If divided according to the connection method of pipe joints and pipelines, there are three types of hard pipe joints: flaring type, ferrule type and welding type. Hose joints are mainly withholding hose joints.


The connection method of the pipe and the hydraulic hose joint in the hydraulic system is also different, and the connection thread is selected for the screw-in end of the pipe. The taper thread relies on its own vertebral body to tighten and uses PTFE and other materials for sealing operation, and is mainly used in medium and low pressure hydraulic systems. The sealing effect of fine thread is very good, and it is often used in high-pressure systems, but it requires the use of combination washers or O-rings to close the end face, and sometimes copper washers are used, which are more suitable for comparison on the receiving wall In thick pipes, the main components are joint body, receiving and nut. When in use, the joint body is embedded in the guideline, and the end face is sealed with the aforementioned gasket. The joint body and the receiver are sealed with rubber, and sometimes the spherical sealing method is used.


Quick couplings, one with one-way valve, one without one-way valve. For the use with one-way valve, the one-way valve end is connected with the air source. When it is disconnected, the one-way valve is actively closed, and when it is connected, the movable end pin opens the one-way valve. Self-locking uses steel balls to be embedded in the groove, and the steel balls are locked together by a "cone-cylindrical" sleeve. It is quick and convenient to save the use space; the joint thread is coated with sealant, which can save the surrounding of tape.