At the initial stage of installation of the hydraulic coupling, oil leakage may be caused by (1) knocking during the installation process damaged the aluminum shell - deformation, affecting the oil seal, and most of the oil leakage phenomena are obvious and serious; (2) The rotating part of shaft seal is rusted, resulting in seal failure; (3) Oil leakage (oil mist) on the joint surface of the coupling assembly may be caused by insufficient pre tightening force of the bolts of the coupling, or too little sealant, damage and failure of the O-ring. For example, oil leakage from the surface of the casting is a casting defect (air hole and sand hole) The hydraulic coupling leaks oil after running for a period of time, which may be caused by (1) the working machine is overloaded, the fusible plug of the coupling melts and injects oil, and refills oil to replace the fusible plug; (2) The coupling operates at high temperature for a long time or the over temperature fuel injection times are too frequent, which leads to the failure of the oil seal lip and oil leakage from the shaft head; (3) There is foreign matter in the coupling oil, which damages the oil seal

Basic principle of hydraulic coupling

The hydraulic coupling has the functions of flexible transmission, shock mitigation and torsional vibration isolation, which can prolong the starting time, reduce the starting current, enable the power machine to start with light load, solve the difficult problem of starting with heavy inertia load, and protect the prime mover from overload. And the product can achieve energy saving and power saving effect by reducing the motor base number. The variable speed hydraulic coupler has the function of stepless speed regulation, and the energy saving effect is remarkable when it is applied to fans and pumps. When ordering the torque limiting hydraulic coupling, the power and speed of the prime mover, the shaft diameter, key height and key width of the prime mover and the working machine shall be indicated. Other forms shall indicate the diameter, groove type, number of grooves of the belt pulley, the diameter and size of the brake pulley, and whether the vertically installed coupler is vertical or vertical. It is recommended that the user indicate that G7 tolerance is adopted for the shaft hole tolerance matched with the prime mover and working machine. If no special indication is made, it will be processed according to the reference hole tolerance H7. When ordering the variable speed hydraulic coupling, it is required to indicate the direction of the coupling (stand at the motor to see whether the input end of the hydraulic coupling is clockwise or counterclockwise). For detailed information and product size parameters of special types, please call or write to consult and negotiate.

Installation and commissioning of hydraulic coupling

The filling volume of the torque limiting hydraulic coupling shall not exceed 80% of the total volume. Fusible plug is the overheat protection device of torque limiting coupling, * * it can not be replaced by other plugs. The fusible plug can effectively protect the torque limiting coupling from overheating, but the discharge of the working medium may cause pollution and inconvenience. According to the special requirements of the user, two types of temperature control switches (non-contact wireless audible and visual alarm device, and dial rod push travel switch device) can be used. The explosive plug is mainly used for the moment limiting coupling of water medium and non combustible liquid medium. The output steering of the torque limiting coupling is consistent with the steering of the power machine. The power machine can be in forward and reverse directions, but sharp forward and reverse direction conversion shall be avoided. The quality of the working medium of the coupling and the friction of the elastic block shall be regularly checked and replaced in time. Non * * personnel are not allowed to disassemble and assemble the coupling at will to avoid damaging the sealing and balancing accuracy.

In the factory pace of the intelligent production line, each link is basically closely linked. If there is a problem in one of the works, one production line or even the whole factory may stop production. How to prevent the collapse of production lines caused by wear and tear of machinery and equipment? Guangdong ZTE has designed corresponding matching hydraulic couplers to perfectly solve the problem of damage caused by wear and tear of machinery and equipment. The following is a typical case of yotc750 hydraulic coupler carefully selected by this hydraulic coupler manufacturer for a company's thermal induced draft fan to see if it has any effect.