Installation knowledge of rotary joints, wire rotary joint connection methods

A high-speed rotary joint, also known as a rotary connection or rotary joint, is a rotary sealing device that connects rotating equipment to a fixed pipe for transporting steam, water, heat transfer oil, coolant, hydraulic oil, air, and other media. High-speed rotary joint manufacturer consultation**: 0519-86180788 Jiangsu Benecke Sealing Technology Co., Ltd.

After years of continuous innovation, we have produced thousands of rotary joints that meet the needs of different industries and different structural forms. Our complete range of standard rotary joints are suitable for a wide range of applications, including steam, water, thermal oil, coolant, hydraulic oil, air and other media. If you don't find what you're looking for, our design and development department can quickly design it for you according to your requirements.

1. Collision and fall should be avoided during the handling and storage of the rotary joint, so as not to damage the interface and internal parts.

2. Install the machine concentrically as much as possible to ensure the good operation of the rotary joint.

3. When installing the swivel joint with threaded connection, attention should be paid to whether the thread direction of the inner and outer pipes corresponds to the rotation direction of the drum, and the thread rotation direction of the inner and outer pipes should also be consistent.

4. The connection between the rotary joint and the pipe must be connected by a hose, and rigid connection is absolutely prohibited.

5. The entrance and exit of the rotary joint are directly connected with the hose as much as possible. In order to reduce the auxiliary weight of the joint and prolong the service life.

6. For the assembly of the inner tube, pay attention to the matching of the size and the auxiliary support of the weight. For the fitting of the inner tube and the fitting of the internal rotary joint, the tolerance fit of H8 E7 is recommended.

7. The support and stop of the rotary joint should be appropriate, and the diameter of the general rod should be 2mm smaller than the stop hole, so as not to affect the free adjustment and compensation of the rotary joint.

Various connection methods for the connection of the rotary joint and the equipment (customers can set up various different types of connection methods according to the specific structure of the equipment used.)

Shorting can be faster'For wiring, directly press it with pliers, and it can also do a good job of insulation, and can also effectively prevent poor contact, and the short-circuit screw cap can also be short-circuited wires, screw the two wires together, and then use the short-circuit screw cap to screw on, which is also very firm.

Of course, the fastest way is nothing more than to open the thread, screw the two threads together, and wrap the insulating tape, but this method is too risky and easy to illuminate into poor contact, and there are potential safety hazards.

You can also give tin to the two wires separately and solder the two wires directly with a soldering iron, which is the safest method, but it is a bit troublesome.

You can also use a to connect the two wires, which is also convenient for unplugging, saving time and effort, and can also use the terminal for wiring, improving the safety level, and also convenient for disassembly in the future.

A rotary joint is a kind of closed rotary connector that rotates 360° to convey the medium. Ode to the Book.

The working principle of the rotary joint is to input the slurry, dirt and other fluid foreign body media from the stationary pipeline into the rotating or reciprocating moving equipment, increase the rotation range of the optional rotary joint through the pressure and temperature speed, and use the connected hollow shaft and the concentricity of the rotating body to discharge the slurry, dirt and other fluid foreign body media from the rotary joint.

Expansion of the sale of the lot:The types of rotary joints are divided into hydraulic rotary joints, wild bucket macros, high-pressure rotary joints, multi-channel rotary joints, high-speed rotary joints, high-temperature rotary joints, single-channel rotary joints, special rotary joints for LEDs, special rotary joints for excavators, and special rotary joints for machine tools.

The application fields of rotary joints cover almost all processing and manufacturing industries. Such as: metallurgy, machine tools, power generation, petroleum, rubber, plastics, textiles, printing and dyeing, pharmaceuticals, cigarettes, papermaking, food, feed processing, etc.

Encyclopedia - Rotary Joint.

Encyclopedia – Connectors.

The experts of Tengzhou Eurasia Machinery tell you.

The rotary joint should be installed correctly according to the requirements of the installation and use manual, otherwise its sealing performance and its life will not be fully utilized.

1. Assembly and installation of one-way rotary joints and matching equipment.

When the hollow shaft is connected with the rotating body by threading, the thread is generally coated with white lead oil or soft film, and the mandrel is clamped with a tool (generally designed with a wrench clamping plane) to screw in the center of the threaded connection hole of the rotating body until it is tightened.

When the hollow shaft is connected with the rotating body by flange, a uniform washer of thickness should be added at the end of the hollow shaft of the extended flange, and then the end of the rotating body is matched with the matching part and the screw hole, which is fixed with bolts, and when the bolt is tightened, the angle should be tightened, and finally tightened, and the torque should be the same.

2. For the two-way inner tube fixed rotary joint, the connection between the outer pipe and the equipped rotating body is the same as that of the one-way rotary joint. The difference is the installation of the inner tube.

The connection mode of the end cover of the inner pipe and the rotary joint is generally connected by tapered pipe thread and pipe thread, and its connection is opposite to the rotation direction of the rotating body, and the rotation direction is the same as that of the outer pipe with thread or with the rotating body. When the outer pipe is connected by flange, the inner pipe and the end cover are threaded, and sometimes the end of the inner pipe is locked in the end cap with a nut.

During installation, the inner tube is tightened by the end hole of the outer pipe to the end cover screw hole of the swivel joint inward, and then the inner tube is sent into the inner cavity with the rotating body.

3. The connection and assembly of the outer pipe of the two-way inner tube rotary joint and the matching rotating body are the same as those of the one-way rotary joint, the difference is the installation and assembly of the inner tube.

Before installing the outer tube, the inner tube is assembled with a rotating body. The inner tube of this structure is generally connected with the rotating body by threading, and its rotation direction is opposite to that of the rotating body.

Remove the end cover of the rotary joint, when the packing seal is used between the inner and outer pipes, the packing gland and the stop pin (some rotary joints are designed with this part) should be removed, and the packing should be loosened in different situations, or the packing should be taken out, and then the inner tube should be loaded in the center of the outer tube, and the outer tube should be fixedly connected with the rotating body. Then assemble the inner tube packing gland and end cap in reverse according to the original disassembly order.

4. The following work should be done before it is connected with the pipeline fittings with the conveying fluid:

Pull the swivel joint housing with your hand or tool to check whether it rotates flexibly, otherwise you need to find the cause and adjust.

When equipped with ball bearings and designed with lubricating grease addition and relief holes, check whether the oil filling hole is up and the relief hole is down, and check whether the straight oil injection cup is damaged or blocked during handling.

Check and adjust whether the position of the fluid entering or exiting the pipe corresponds to the corresponding hole of the rotary joint and meets the design requirements.

Assemble the stop rotation and load-bearing hoisting structural parts of the rotary joint, and adjust the concentricity of its shell to be consistent with the hollow shaft.

5. Assemble and connect metal flexible hoses (or other flexible hoses) and other related pipe fittings according to the installation and operation instructions of the rotary joint, and connect and fix them with the pipeline for transporting fluid.

Water rotary joints are basically made of alloy housings. It's just that Japan and Taiwan use aluminum alloy or copper alloy for the shell. Most of the Continental swivel housings are cast in brass.

The cost has been reduced a lot, and the quality is naturally a little worse. The rest of the seals inside are pretty much the same. They are:

Springs, copper bells, protective pads, O-rings, graphite rings. Japan and Taiwan use more silicon carbide; Most of the domestic ones are sealed rings made of high-purity graphite.

High-temperature heat transfer oil rotary joints, Europe and the United States and other countries generally use Morgan's impregnated graphite. There are also auxiliary seals such as high-temperature O-rings. Japan uses high-density materials, similar to resins.

Or also impregnated graphite. Continental rotary joint manufacturers, the early ball rings are impregnated with graphite. The column rings are machined using brass rod stock.

Later, because of factors such as **, ordinary graphite rings were simply used as column rings. Because the maximum temperature from the heat transfer oil to the equipment is only about 300 degrees Celsius. It's still affordable for graphite.

High-pressure rotary joints are products that have only been introduced in recent years. Imported from abroad, most of them are similar to water rotary joints. The only difference is that the housing is made of stainless steel.

The circlip is used in other ways. Reduced internal circulation. Various methods are used.

Domestic high-pressure rotary joints generally use stainless steel shells. Avoid the shell not being able to withstand the pressure**, causing unnecessary danger and waste. It is mostly used on hydraulic equipment.

High-speed rotary joints are much the same. The reason for easy damage is mostly the stuck bearing. Lack of butter, high temperature operation.

It is easy to cause damage to the rotary joint. At present, the most domestic bearings are imported bearings and high-temperature resistant butter are added. Such as Sweden bearing (SKF), Japan (NSK) (NTN) and other well-known brands.

If you can buy Harbin ** bearing or Wanxiang company's Qianchao trademark bearing, it can also withstand high temperatures of more than 200 degrees in the case of thousands of revolutions per minute, and it can still be used within a year.

Principle of swivel joints:

The rotary joint refers to: working speed: 3000rpm, working temperature:

The 343°, 25 megapascal working pressure rotary joint supports 1 channel - 42 channels to transmit gas, liquid, oil and other media at the same time, compact design structure, flange connection, effective integration into customer equipment, using the most advanced surface treatment technology in the United States.

Function: The function of the rotary joint is to input the liquid from this side of the pipe into the rotating or reciprocating equipment, and then discharge from the connecting sealing device.

Selection guide: 1. One-way flow: Install rotary joints at both ends of the drum, and the fluid enters from one end and discharges at the other end, without using the inner tube.

2. One-way flow type: a rotary joint is installed at one end of the drum, and the fluid is introduced and discharged at this end at the same time, and the rotation of the inner tube relative to the drum is stationary.

4. Two-way flow type (inner tube rotation): This type is used for the structure where the inner tube is relatively fixed together in the drum and runs synchronously with the drum, at this time, the fluid is introduced into the inner tube and discharged by the outer tube.

5. Two-way flow type (inner tube rotation): The inside of the drum is equipped with a siphon that runs synchronously with the drum to discharge the condensate, which is mostly used for steam type.

A rotary joint is a kind of closed rotary connector that rotates 360° to convey the medium.

The working principle of the rotary joint is to input the slurry, dirt and other fluid foreign body media from the stationary pipeline into the rotating or reciprocating moving equipment, increase the rotation range of the optional rotary joint through the pressure and temperature speed, and use the connected hollow shaft and the concentricity of the rotating body to discharge the slurry, dirt and other fluid foreign body media from the rotary joint.

Dulwich Whirlwind Rotary Joint Structural Principle 01

For example, when the temperature of the screw extruder is too high, it is necessary to make the hollow inside of the screw into a circulating water flow to take away the heat.

The function of the rotary joint is to feed the liquid from this side of the pipe into the rotating or reciprocating equipment, and then discharge the connection sealing device from it.

【Tengxuan Technology】 Rotary Union is a rotating mechanical sealing device, which is used to convey and remove heat conduction medium for fixed pipelines and rotary rollers. Heat transfer media used to apply rotary joints include steam, water, heat transfer fluid, hydraulic fluid, and coolant.

The function of the rotary joint is to input the liquid from this side of the pipeline into the rotating or reciprocating equipment, and then discharge the sealing device for the connection, but the following points need to be paid attention to when installing

1. In the process of handling and storage, try to avoid impact and fading, otherwise it will damage the interface and internal parts;

2. When installing the swivel joint with threaded connection, attention should be paid to whether the thread direction of the inner and outer pipes corresponds to the rotation direction of the drum, and the thread rotation direction of the inner and outer pipes should also be consistent;

3. Hose links must be used between joints and pipelines to prohibit rigid links;

Users can set up a variety of different types of connections depending on the specific structure of the device being used.

As we all know, the rotary joint is a kind of closed rotary connector for 360° rotating conveying medium, which is mainly divided into threaded connection.

The flange connects the two, such as Tengxuan.

SN type steam rotary joint, which can be connected to the customer's equipment through external threads, is easy to disassemble and replace.