German tool temp pump tool temp model tool temp price

tool temp pump is a pump in which the vanes in the rotor slots contact the pump casing (stator ring) to press the sucked liquid from the oil inlet side to the oil outlet side. There are two types depending on the type: one) specifically refers to vane pumps among positive displacement pumps. Two) refers to the three pumps of dynamic pumps (centrifugal pumps, mixed-flow pumps, axial-flow pumps) or other special pumps. Such pump products are generally not called vane pumps. However, as a monograph, vane pumps almost all refer to centrifugal pumps, mixed-flow pumps, axial-flow pumps, etc. According to whether the theoretical displacement per revolution is a fixed value or a variable value, it can be divided into vane variable pumps and vane fixed-displacement pumps.

tool temp pump working principle

The pump consists of components such as the rotor 1, stator 2, vanes 3, valve plate, and end cover. The inner surface of the stator is a cylindrical bore. There is an eccentricity between the rotor and the stator. The vanes can slide flexibly in the slots of the rotor. Under the action of centrifugal force during rotor rotation and pressure oil supplied to the base of the vanes, the tops of the vanes press tightly against the inner surface of the stator. Thus, sealed working chambers are formed between two adjacent vanes, the valve plate, the stator, and the rotor. When the rotor rotates counterclockwise, the vanes on the right side of the figure extend outward, the volume of the sealed working chamber gradually increases, creating a vacuum, so oil is sucked in through the oil suction port 6 and the window on the valve plate 5. On the left side of the figure, the vanes retract inward, the volume of the sealed chamber gradually decreases, and the oil in the sealed chamber is pressed out through another window on the valve plate and the pressure oil port 1 to be output to the system. In this pump, oil suction and pressure discharge each occur once per rotor revolution, hence it is called a single-acting pump. The rotor is subjected to radial hydraulic unbalanced forces, so it is also called an unbalanced pump, and its bearing load is relatively large. Changing the eccentricity between the stator and the rotor changes the pump displacement, so this type of pump is always a variable displacement pump.

tool temp pump common problems

1) Insufficient flow. Causes and troubleshooting methods for insufficient flow in vane pumps. Loose screws at the top cover increase axial clearance and reduce volumetric efficiency. Tighten the screws appropriately to ensure uniform and proper clearance (clearance is 0.04～0.07 mm). Individual vanes slide inflexibly; clean them. If they remain inflexible after cleaning, match them slot by slot. Wear on the inner surface of the stator prevents good contact between the vanes and the stator inner surface. Wear on the stator inner surface usually occurs at the suction chamber. Severe wear on the end face of the valve plate requires replacement. Vanes and rotor installed incorrectly; ensure the vane inclination direction matches the rotor rotation direction. Large system leakage; check each component for leaks and check if the pressure gauge is blocked by dirt. 2) Oil cannot be sucked up. Causes and troubleshooting methods for vane pump oil suction failure. Oil level too low; check and fill to the specified oil level mark. Oil viscosity too high, causing vanes to slide inflexibly in the rotor slots; generally use 20# hydraulic oil or 22# turbine oil. Poor contact between the valve plate end face and the housing inner plane causes communication between high and low pressure chambers; repair the valve plate end face. Sand holes inside the pump body cause communication between high and low pressure chambers; replace. Motor rotation direction reversed; correct it. 3) Excessive pump noise. Clogged oil filter causes poor suction; clean. Air leakage at the suction end; apply grease to check suction pipe joints one by one. If noise decreases, tighten the joints. Directly observe if bubbles appear at the oil return port. Wear on the pump end seal; apply grease at the shaft end oil seal. If noise decreases, replace the oil seal. Pump cover screws loosened due to vibration; apply grease to the screw connections. If noise decreases, tighten the screws. Pump and motor shafts misaligned; realign them to be concentric. The two sides of the rotor vane slots are not perpendicular to their end faces; replace the rotor. Valve plate relief triangular groove too short; modify appropriately with a file so that when the previous vane passes the relief groove, the next vane has already detached from the suction chamber. Seal at the spline shaft end too tight (causing overheating); adjust or replace appropriately. Pump speed too high; operate at the specified speed. Insufficient oil suction by the oil pump; check oil level. Hydraulic oil severely contaminated; remove the oil filter, check for damage or excessive solid adsorption, and replace the oil filter and hydraulic oil. Pressure fluctuation; check the wear condition of the main pressure valve core.

tool temp pump usage precautions

Key management points for vane pumps, in addition to preventing dry running, overload, air suction, and excessive suction vacuum, include: 1) If the pump rotation direction changes, the suction and discharge directions also change. Vane pumps have a specified rotation direction and reverse rotation is not allowed. Because the rotor vane slots are inclined, the vanes have chamfers, the bottom of the vanes connects to the discharge chamber, and the throttle grooves on the valve plate and the suction/discharge ports are designed for a specific rotation direction. Reversible vane pumps must be specially designed. 2) Vane pump assembly. Use locating pins to correctly position the valve plate and stator. Vanes, rotor, and valve plate must not be installed backwards. The suction zone part of the stator inner surface wears most easily; if necessary, it can be flipped for installation so that the original suction zone becomes the discharge zone for continued use. 3) Disassembly and assembly. Keep working surfaces clean. Oil should be well filtered during operation. 4) Excessive clearance between vanes and vane slots increases leakage; too little clearance prevents free vane extension/retraction, leading to malfunction. 5) Axial clearance of vane pumps greatly affects ηv. 1) Small pumps - 0.015～0.03mm2) Medium pumps - 0.02～0.045mm6. Oil temperature and viscosity. Generally should not exceed 55℃. Viscosity requirement is between 17～37mm2/s. Too high viscosity makes oil suction difficult; too low viscosity causes severe leakage. As pump products, vane pumps more often refer to vane pumps. Vane pumps almost entirely refer to vane pumps.

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