Causes and treatment of noise increase of gear pump of thermostatic hot press

Causes and treatment of noise increase of gear pump of thermostatic hot press
The noise of the gear pump of the thermostatic hot press increases. The hydraulic hot press uses pulse heating technology, with accurate temperature control and temperature sampling frequency of 0.1s. The hot press manufacturer has diversified working modes such as single working platform, rotary working platform, left and right mobile platform. According to the pulse heating principle of Shenzhen hot press, due to the special design of the welding head surface, the resistance of the welding surface is very small, and the current will pass through the section with the minimum resistance. By constantly changing the voltage, adjusting the current level, and rapidly heating the welding head. The original drive shaft with gear pump is different from the motor shaft. The axis is offset, the axis is not parallel, the axes of the two shafts are not coincident, the gear accuracy of the gear pump is low or the tooth surface is worn or roughened, the skeleton seal is damaged, the oil suction pipe or filter is blocked, and there is air in the oil tank.
B. Repair method of thermostatic hot press: reinstall a hydraulic pump and motor, and adjust the coaxiality within a reasonable range; Replace the cytoskeleton and oil seal; Clean the oil suction pipeline and filter; Change the hydraulic oil of the equipment.
This paper introduces the causes and treatment methods of the oil seal or gland of the gear pump framework of hydraulic press washed out by oil. The framework oil i is loosely matched with the front cover of the pump body, the oil is not clean, the oil drain hole is blocked by impurities, the direction of the pump body is opposite, and the connection between the oil drain hole and the oil discharge tank generates pressure; The front and rear gland blocks the oil return circuit of the front and rear covers, causing the oil return to be blocked, and the gear pump is seriously worn, with excessive leakage.
Exclusion method. Check the condition of frame oil seal and pump body. If the front cover and hole are unqualified, replace the front cover ‖. Otherwise, replace the frame oil seal with clean hydraulic oil to remove impurities in the drain hole; Reassemble the pump body in the opposite direction, reassemble the gland, and accurately control the pressure of the gland V, which can not only avoid blocking the return channel, but also prevent oil leakage;. Pump shaft Repair gear pump parts through leakage treatment.