What are the general uses of vane pumps and check valves in hydraulic systems?
What are the general uses of V/VQ series vane pumps and check valves in hydraulic systems? Most people should have heard that the necessary condition for the normal operation of the V/VQ series vane pump is: it should have a sealing volume. The size of the sealing volume can be changed alternately. There should be a flow distribution device. The function of the flow distribution device is to ensure that the sealing volume is connected with the oil tank during the oil suction process, and at the same time closes the oil supply path; when the oil is pressed, it is connected with the oil supply pipeline but cut off from the oil tank. Then the V/VQ series vane pump and the one-way valve are in hydraulic pressure. What are the general uses in the system? Let’s give you a detailed explanation of the use of V/VQ series vane pumps and check valves in hydraulic systems as follows:
1. The one-way valves 4 and 5 in the V/VQ series vane pump are flow distribution devices. The form of the flow distribution device varies with the structural differences of the hydraulic pump. During the oil suction process, the fuel tank must be connected to the atmosphere.
2. V/VQ series vane pump schematic diagram: In order to read the hydraulic transmission schematic diagram correctly and quickly, you must first have a good grasp of hydraulic knowledge and be familiar with the working principles, functions and characteristics of various hydraulic components; understand and master the hydraulic system Be familiar with various basic circuits and some properties of oil circuits; be familiar with various control methods of hydraulic systems and the symbols in the diagrams.
3. Secondly, it is necessary to connect with reality at work, read more and practice more, and understand the characteristics of the system through various typical hydraulic systems. This can play a role in reading new hydraulic transmission schematic diagrams and practice makes perfect.
4. The main function of the one-way valve (check valve) is to prevent the flow of oil in one direction, while enabling free flow in the opposite direction. To prevent flow, there must be no leakage, so this type of valve always uses a seat valve structure.
5. The sealing components include steel balls: (1) poppet valve core, (2) valve seat, (3) and cartridge valve, (4) several types. Only a small amount of hydraulic pressure is required for the sealing element to overcome the spring force and open the valve.
6. (1) The structure type of the one-way valve can prevent the hydraulic pump drive shaft from reversing when the load drops; (2) The reverse free flow of the throttle valve (one-way throttle valve); (3) Used as Liquid filling valve of the press; (4) used as an anti-cavitation valve for rotational inertia loads; (5) used as a bypass valve when the suction oil filter is clogged, (6) used as a bypass valve when the return oil filter is clogged Bypass valve, (7) bridge flow control valve (to ensure one direction through the flow valve); (8) used for closed system oil supply circuit.