Common work synthesis and processing methods of Parker PGP300 series gear pumps

Common work 1: The nut on both ends of the piston rod of the double rod piston cylinder is too tight to make it concentric. The nut should be loosened slightly so that the piston is located in the static mini hydraulic station of course

Common job 2: Because a certain section of the working stroke is often used, Parker PGP300 series gear pump accessories form a hydraulic station with poor inner diameter linearity (some have a waist drum shape), resulting in high and low pressure oil connections in the hydraulic station. The inner diameter of the hydraulic station should be bored and refurbished, with a single piston

Common work 3: The oil temperature in the hydraulic station rises too high and the viscosity decreases, which increases leakage; perhaps due to the large amount of impurities, the piston and piston rod are stuck. Actions such as heat dissipation and cooling should be adopted to change the oil

Common work 4: The gap between the moving parts of the hydraulic station is too large. Parker PGP031 series gear pump accessories should reduce the tacit gap

Common work five: The sealing ring at the end cover of the hydraulic station is too tight or too loose. The sealing ring should be adjusted to have a moderate tightness to ensure that the piston rod can be pulled securely by hand without leakage

Common work six: Piston rod twists and turns. Piston rod should be straightened

Common work 7: The piston tacitly gap is too large, or the sealing equipment may be damaged, resulting in internal leakage. Mini hydraulic station is a combination of pump equipment, integrated block or valve combination, oil tank, and electrical box. The functions of each component are as follows: Parker PGP020 series gear pump accessories Pump equipment-equipped with a motor and an oil pump, it is the power source of the hydraulic station, which converts mechanical energy into hydraulic oil power. Manifold-is a combination of hydraulic valve and channel body. It regulates the direction, pressure and flow of hydraulic oil. Valve combination-the plate valve is installed on the vertical plate, and the pipe behind the plate is connected, which has the same function as the integrated block. The oil tank is a semi-closed container welded with steel plate, and is also equipped with an oil filter, an air filter, etc., which is used for oil storage and oil cooling and filtering. Electrical box-divided into two ways. One is a terminal board with external leads; the other is equipped with a full set of control appliances.