The application of rotary joints in the food industry

The parts that can rotate 360 ° and play a role in connecting and transmitting are called rotary joints, and each enterprise has the same name for the joint. But the difference in structure is not significant. Now we will analyze all the structures and types of rotary joints one by one. 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

Double circuit rotary joint: Double circuit rotary joints are divided into two types: inner tube rotary joints and inner tube fixed rotary joints, which are characterized by bidirectional transmission of media. The structure is simple, the price is affordable, and there is no bearing support inside. Instead, it is supported by a high wear-resistant graphite carbon ring with oil injection holes on the outside. When operating in a dry environment for a long time, the internal oil can be regularly injected to ensure good lubrication. At the same time, when the joint rotates, it can automatically compensate longitudinally to achieve good sealing effect. The rotor part has two sturdy and flexible ring supports to ensure that the rotating joint rotates smoothly. Multi channel rotary joint: Usually there are two or more inner pipes inside the joint, which is called a multi channel rotary joint in our industry. Its characteristic is that multiple inner pipes can simultaneously transmit various different media, and each pipeline is independent of each other and does not interfere with each other. This is its major feature. There are multiple imported seals for mechanical sealing inside, with one ring and two sets of seals for sealing. The sealing characteristics are high temperature resistance, wear resistance, corrosion resistance, long service life, etc. The structure is diverse and flexible. It is supported by two high-precision and sturdy bearings inside, with a small friction coefficient, supporting the entire rotor to rotate in a balanced manner at high speed. Commonly used are 2-channel rotary joints, 3-channel rotary joints, and 4-channel rotary joints. Rotary joint, 6-way rotary joint, 8-way rotary joint, 10-24 way rotary joint. The standard joint medium can be selected from multiple directions to enter the hole. The medium entry hole can be selected from the side of the shell, the side of the flange, or the upper end of the flange. Depending on the specific working conditions, the medium entry direction can be selected. The multi-channel rotary joint has high concentricity, fast rotation speed, low torque, and long service life. Conductive slip ring: Conductive slip ring is also known as conductive central rotary joint. Its characteristics are the infinite rotation and transmission of power supply and signals, ensuring no winding, high-precision bearing support inside, iron Buddha dragon insulation sheet for insulation treatment, gold-plated electric brush. The characteristics of gold electric brush are high temperature resistance, wear resistance, good conductivity, large overcurrent, and sometimes require external interference treatment to ensure good internal signal output. It can be connected through holes or flanges, and is a commonly used conductive joint in industry. Gas (liquid) electric rotary adapter: Gas (liquid) electric rotary adapter usually consists of two parts. The conductive and ventilation parts are characterized by rotating the gas source and power supply to the working components. The design features include: when the circuit part is larger than the gas path part, the circuit is surrounded by the gas path design; when the gas path part is larger than the circuit part, the circuit is surrounded by the gas path design. The performance is stable, the service life is long, and the insulation is good. Customized rotary joint: Customized rotary joints are customized based on some size parameters provided by customers. For example, the external dimensions, link dimensions, distance between air holes, which type of connecting thread to use, speed, pressure, temperature, and whether there are multiple flange structures, etc., design a special-shaped rotary joint based on the information provided by the customer. According to its structure and performance, it can be roughly divided into the above categories. According to the medium introduced, it can be divided into the following categories: medium: water, steam, hot oil, chemical agents, etc. When water is introduced, it is called a water rotary joint, an oil rotary joint, a steam rotary joint, a vacuum rotary joint, a steam rotary joint, a chemical equipment special rotary joint, a steel industry special rotary joint, etc. According to the technical parameter requirements of the joint, it can be divided into high-speed rotary joint, high-pressure rotary joint, high-temperature rotary joint, high-speed and high-pressure rotary joint, hydraulic rotary joint, and hydraulic multi-path rotary joint. According to everyone’s search habits, it can be divided into: rotary joint, central rotary joint, central rotary joint, rotary joint, multi-path rotary joint, hydraulic rotary joint, pneumatic slip ring, and pneumatic rotary joint. According to the sales location, it can be divided into: Guangdong rotary joint, Shenzhen rotary joint, Zhejiang rotary joint, Dongguan rotary joint, Foshan rotary joint, Shanghai rotary joint, Jiangsu rotary joint, Kunshan rotary joint, Hunan rotary joint, Changsha rotary joint, Wuxi rotary joint, Qingdao rotary joint, Wuhan rotary joint, Henan rotary joint, Jiangxi rotary joint, Guangxi rotary joint, Beijing rotary joint, Wenzhou rotary joint, Guangzhou rotary joint, Nantong rotary joint, Tianjin rotary joint, Shandong rotary joint, Suzhou rotary joint. According to domestic and imported products, it can be divided into: imported rotary joint, domestic rotary joint, imported rotary joint, and domestic rotary joint.