Metal hose is one of the main components for equipment installation and connection between parts. It has good flexibility, high temperature resistance, and durability

Characteristics of corrosion and high pressure resistance. Therefore, it has been widely used in aerospace, mechanical manufacturing, petrochemicals, power, metallurgy, construction and other industries. Metal hoses are generally composed of stainless steel corrugated pipes, mesh sleeves, protective rings, connecting pipes, welding rings, joints and other parts. The joints include threaded joints and flange joints, with fixed and flexible types. The current production process for metal hoses generally involves welding corrugated pipes, network pipes, and protective rings together, and then welding them with connecting pipes or joints. Another connection method is to weld the two ends of the corrugated pipe to the connecting pipe first, then put the mesh sleeve on both ends of the corrugated pipe, use a protective ring to press the mesh sleeve onto the connecting pipe for welding, and then weld the connecting pipe to the connecting pipe.

The production method of metal hoses is achieved through multiple welding processes, which generate a large amount of heat,

In addition, the differences in wall thickness and material of each component result in changes in the shape of the welding area and concentration of thermal stress, leading to changes in the structure of the metal material and reducing the mechanical strength of the product. Therefore, the existing metal hoses have a short service life, complex welding processes, low production efficiency, and high costs, making them unsuitable for large-scale production.

The usage and installation method of metal hose joints:

(1) Assemble the sub connector first;

(2) Align the claw on the joint with the open slot on the limit ring, then rotate the claw clockwise into the hidden slot, and then slide the block forward to secure it in the open slot;

(3) When disassembling the female connector and the sub connector, first pull the block backwards, pull the block away from the open slot, then rotate the sub connector counterclockwise, unscrew the claw from the hidden slot to the open slot, and pull the sub connector outwards.

Compared with existing technology, this installation advantage lies in aligning the claws on the sub joint with the open groove on the limiting ring, then rotating the claws clockwise into the hidden groove, and then sliding the block forward to clamp the block into the open groove. The female joint and sub joint can be clamped together, and the clamping and disassembly are very convenient. The outer peripheral surface of the fitting end has a circular sealing groove with a rubber ring inside, which can ensure the sealing effect after clamping.

Detailed installation steps for metal hose fittings:

(1) When connecting the female joint with the pre joint, assemble the pre joint first, insert the rubber ring into the sealing groove of the fitting end, and connect the card block to the outer wall of the pre joint next to the card claw, and pull it back;

(2) Align the claw on the connector with the open slot on the limit ring, then screw the claw clockwise into the hidden slot, and then slide the block forward to clamp it into the open slot. This will connect the female connector and the pre connector together;

(3) When disassembling the female connector and the pre connector, first pull the block backwards, pull the block away from the open slot, then rotate the pre connector counterclockwise, unscrew the claw from the hidden slot to the open slot, and pull the pre connector outward to separate the female connector from the pre connector.

2. The method of using the joint of the metal hose according to claim 1, characterized in that there are two sealing grooves.

3. The method of using the joint of the metal hose according to claim 1, characterized in that the size of the card block is adapted to the size of the open groove.

4. The method of using the joint of the metal hose according to claim 1, characterized in that: there are three claws on the pre joint, and the three claws are uniformly distributed in a circular shape on the outer circumferential surface of the pre joint.

5. The method of using the joint of the metal hose according to claim 1, characterized in that: a groove is opened on the outer wall of the pre joint along its longitudinal axis, and a convex edge adapted to the groove is provided on the bottom surface of the card block corresponding to the groove. The cross-section of the card block is arc-shaped, and its curvature is consistent with that of the pre joint.

6. The method of using the joint of the metal hose according to claim 1, characterized in that the hidden groove is fan-shaped.