Single circuit rotary joint

Single loop rotary joint: There are two types of single loop rotary joints: one is the inner tube rotation, and the other is the inner tube fixation. Its characteristics are simple structure, easy installation, and precise graphite carbon sealing parts inside. The outer shell is equipped with observation holes. When the joint rotates, the wear of the internal sealing parts can be observed. When the sealing parts have certain wear, spring pressure is set up inside. It can automatically compensate for the sealing structure, thus achieving a good sealing effect. Usually, this type of joint is used for large-diameter transmission media. Supported by ball bearings to ensure balanced operation of the entire joint, if the seal is damaged after prolonged use, it can be replaced without the need to purchase new products, saving costs

At present, single loop rotary joints mainly use springs and graphite for sealing. The characteristic of this sealing is that the spring plays an automatic compensation role, while graphite plays a sealing role. It is determined that the sealing is not very good, and it cannot be used for ventilation. The sealing element is prone to wear, oil leakage, water leakage and other phenomena, and the sealing needs to be replaced frequently. However, SD company’s single loop rotary joints have already departed from the domestic spring and graphite sealing form, and directly use imported high wear resistant sealing elements without using spring automatic compensation. Instead, internal sealing element expansion compensation is used. This sealing characteristic is mainly good sealing. The rotary joint can not only pass fluid media, but also transmit gas media, which is also SD The difference between the company’s rotary joint products and those of other manufacturers lies in their superior quality and performance. The dual circuit rotary joint mainly has two circuits, where the fluid medium can enter through one port, output through two ports, and return through the same route. It can be input through two ports and output through one port, depending on the specific needs of the work. 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 with two sets of sealing forms added to ensure that the hydraulic rotary joint does not leak under high pressure. The multi-channel rotary joint mainly supports 2-42 channels. Compared with the single circuit rotary joint, the multi-channel rotary joint is different from the dual circuit rotary joint. More complex, Multi channel rotary joints are mainly composed of multiple channels, and the number of channels is defined according to customer requirements. Each channel is required to be independent of each other and not interfere with each other. Each channel is sealed by two or more sets of seals, which can effectively ensure that the hydraulic rotary joint does not leak due to a sharp increase in pressure during operation. This is a higher level of guarantee for the design of multi channel rotary joints based on the principle of pressure analysis. Each ring is filled with different types of media, so there will be no mixing phenomenon. The effective sealing technology ensures the zero leakage characteristics of hydraulic rotary joints, and adopts full inlet sealing for dynamic sealing. Its sealing characteristics are low friction and high pressure resistance. Corrosion resistance, wear resistance, In the case of long-term operation of hydraulic rotary joints, there will be no significant changes in wear, which is also an important factor for SD company’s rotary joints to far exceed domestic rotary joints. In terms of structure and materials, they are comparable to imported rotary joints, but the price is lower, and the after-sales service is shorter than that of imported rotary joints. From all aspects, SD rotary joints have replaced various imported rotary joints such as SMC rotary joints