1. Single screw pump pressure to determine: single screw pump maximum output pressure is based on the number of bushings that is, the number of bushings to determine: 1: the maximum working pressure of 0.6 MPa; 2: the maximum working pressure of 1.2 MPa ; 4: The maximum working pressure of 2.4 MPa; due to the different transmission media, medium containing serious wear, please refer to Table 1, select the liner series. Table 1: According to the choice of the wear of the liner series Bushing wear A secondary No 0.6MPa 1.2MPa General 0.4MPa 0.8MPa Severe 0.2MPa 0.4MPa 2. Single screw pump speed selection: Single screw pump due to its structural features , Most of them are used to transport liquids with higher viscosity and particles containing liquids. Therefore, the selection of the number of revolutions is very crucial. Based on experience, we can list Table 2 and Table 3, and you can consider them according to the specific conditions. Table 2: Select the speed of the pump according to the wear of the medium Abrasion resistance Name of medium Speed ​​(rpm) No fresh water, coagulant, oil, juice, meat foam, paint, soapy water, blood, glycerol 400-1000 General slurry, , Industrial waste water, paint pigments, waste water (sugar), mortar, fish, wheat bran, rapeseed oil Filtered sediment 200-400 Serious stone mortar, clay, plaster, clay 50-200 * The particular medium being transported and its special characteristics of wear and tear, please note that the characteristics of the medium with its concentration and temperature changes. * When the pump size is large, the speed should be selected lower. Table 3: Selection of pump speed according to medium viscosity Media viscosity (cst) 1-1000-100000 100000- 1000000 Speed ​​(rpm)-400 * In the choice of speed should also be based on experience, because of some other factors Also affect the choice of speed, in the final determination of the above values ​​at the same time, it is best to consult with the manufacturer. Single screw pump bushings
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