What is the principle behind tightening and loosening the filter plates of a filter press?
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This post was last edited by jmdc on 2018-1-6 21:09. What is the principle behind tightening and loosening the filter plates of a filter press? What is the working principle of the hydraulic oil station shown in the figure below, especially that valve at the pump outlet? What kind of pump is this, and what kind of valve is that at the outlet? Why are the motors of the hydraulic oil pumps in filter presses of different sizes all 4KW? The two legs of the cylinder base not only lack bolt holes, but it is also explicitly stated that fixing them is strictly prohibited. Why is that? Is it because the oil pressure inside the cylinder is very high, in order to prevent the generation of additional stress? If that’s the case, then wouldn’t ultra-high-pressure containers be unable to be secured?
1. The principle behind tightening and loosening should be related to function; the purpose of tightening is to ensure sealing between the frames. The filter frame is used to filter out impurities, and it creates a space within which those filtered impurities are stored. When too much material accumulates and the pressure of the material fed into the filter press becomes high, it is necessary to shut down the machine in order to remove the impurities trapped between the frames; then the compression mechanism is released and cleaned…… ； 2. This is a simple hydraulic device – a hydraulic station. Its working principle is that the hydraulic oil in the tank is pressurized by a gear pump; then, an electromagnetic directional control valve (when powered/uncapped) controls the inflow and outflow of oil to the clamping cylinder, thereby enabling the act of releasing the clamp. ； 3. The motor configuration is designed based on factors such as shaft power and equipment speed requirements. They don’t necessarily all be the same ； 4. Since the cylinder changes its stroke and angle during operation, locking it in place can cause damage to the equipment and prevent it from functioning properly. Finally, it is recommended to study this small hydraulic system carefully; it can give rise to a variety of hydraulic technology applications, such as hydraulic cranes, hoists, and so on.
The one at the pump outlet is a directional valve that is driven by a solenoid valve to periodically switch between compressing and releasing states； This pump seems to be a gear pump; axial piston pumps are also used. The cylinder cannot be fixed in order to release the thrust stress.