The working principle of single, double circuit and multi-channel rotary joint


The article introduces the working principle of single-circuit,double-loop, and multi-channel rotary joints in detail, and helps everyone understand rotary joints.

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A hydraulic rotary joint is literally a rotary joint that conducts liquid media, and a hydraulic rotary joint (for those who do not know about hydraulic rotary joints, please refer to the following: Introduction of hydraulic rotary joint) is divided into single-circuit rotary joints, dual-circuit rotary joints, and multi-channel rotary joints, which are used for conducting liquid media. So how do these rotary joints work? Next, the rotary joint manufacturer Daweiruisi will introduce you in detail.

The working principle of single-circuit rotary joint

A single circuit is mainly a channel used to transmit fluid medium, only a single medium can be transmitted, and mixed transmission cannot be performed, otherwise, a mixed flow phenomenon will occur. Partners can click to view: What is a rotary joint?) mainly uses a spring and graphite for sealing. The main feature of this seal is that the spring plays the role of automatic compensation, while the graphite is a Sealing effect, making sure that the seal is not very good, can not be used for ventilation, the seal is easy to wear, and it is prone to oil leakage, water leakage, etc., and the seal needs to be replaced frequently.

Some single-circuit rotary joints have been separated from the domestic seal in the form of spring and graphite, but directly use imported high-wear-resistance seals. Instead of using spring automatic compensation, internal seal shrinkage compensation is used.

This kind of sealing is mainly characterized by good sealing, and the rotary joint can not only pass fluid medium but also transmit gas medium.

Rotary joint

Working principle of double-circuit rotary joint

The dual-circuit rotary joint mainly has two circuits. The fluid medium can be entered through one port and output through 2 ports. At the same time, the return route can be input through 2 ports and output through one port. It needs to be selected according to more practical work needs. , The medium is transported in a single way, and cannot be mixed. Secondly, the sealing form is similar to that of the single-circuit rotary joint, mainly because there are two more sets of sealing forms, thus ensuring that the hydraulic rotary joint does not leak under high pressure.

The working principle of multi-channel rotary joint

Multi-channel rotary joints mainly support 2-42 channels. Compared with single-circuit rotary joints, multi-channel rotary joints are more complicated than double-circuit rotary joints. Multi-channel rotary joints are mainly composed of multiple channels. The number of channels is defined according to the customer's requirements, and each channel is required to be independent of each other and not interfere with each other.

Each passage is sealed by two or more sets of seals, which can effectively ensure that the hydraulic rotary joint does not leak due to the sharp rise in pressure during operation. This is based on the principle of pressure analysis. The multi-channel rotary joint design provides a higher level of assurance, each ring is connected to a different type of medium so that the phenomenon of mixed flow will not occur.

 The effective sealing technology ensures zero leakage of the hydraulic rotary joint. The fully imported seal is used for dynamic sealing. The sealing features are low friction, high-pressure resistance, corrosion resistance, and wear resistance. The hydraulic rotary joint works for a long time There will be no major changes in wear and tear, which is an important factor for the Rotary joint to surpass other rotary joints. The structure is reasonable, the material is excellent, the price is low, and the after-sales service is short.

If you need to buy a rotary joint, you can contact us.

The above is all of today's content, if you want to get more information about rotary joints, you can click below to read:

Rotary joint form selection and selection steps

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