The filter plate of the filter press is mostly made of ultra-high molecular weight polyethylene resin, and various commonly used additives, antioxidants, and cross-linking agents are mixed and molded. The above-mentioned various mixtures are mixed and directly put into the mold cavity, and are hot-pressed by a hydraulic press for filter plate press forming. Then keep the pressure, demould after cooling, and then the required filter plate will be formed. Keep the pressure at 15 to 25 MPa, and keep the pressure for 4 to 5 hours. The filter plate is pressed and formed at one time, and can be used after a little trimming without mechanical cutting. The processing and manufacturing process is simple, the cost is low, and the performance is reliable. The molded filter plate can be used in filter presses in the ceramic industry, chemical industry, light industry, food industry, etc.
The hydraulic press for filter plate press forming consists of two sets of columns, upper beams, and lower beams made of metal plates. The columns are installed symmetrically on both sides of the hydraulic machine. Bosses are set on the inner sides of the upper and lower ends of the column, and the upper platform is set on the upper beam. , the upper beam runs through the upper platform; the lower platform is set on the lower beam, and the lower beam runs through the lower platform; the upper beam is set on the upper end of the column, and the lower beam is set on the lower end of the column, and the boss of the column clamps the upper beam and the boss of the lower beam On the inner side; the hydraulic cylinder guide table is set on the upper platform, and the piston rod of the hydraulic cylinder connects downward to the upper end surface of the pressing table; the guide column passes through the guide table and connects to the upper end surface of the pressing table, and the hydraulic cylinder drives the pressing table to move up and down The upper template is fixed on the lower end surface of the pressing table, the lower template is fixed on the upper end surface of the lower platform, and the frame is set between the upper template and the lower template to form a filter plate mold cavity; the hydraulic press for filter plate press forming has a simple and practical structure and high applicability High, low failure rate.
Hydraulic press for filter plate press forming is made according to Pascal's principle of equivalent transfer of liquid pressure under static conditions, and it is a machine that uses liquid pressure to work. The principle of liquid pressure transmission is: in a closed container filled with liquid, a unit external force applied to any point can spread to the entire liquid, its value remains unchanged, and its direction is perpendicular to the surface of the container.
Advantages of hydraulic press for filter plate press forming:
1. The biggest feature of the hydraulic press is that it is easy to obtain the maximum pressure. Filter press hydraulic presses work with static pressure and do not require large anvils and monitored foundations. Due to the adoption of hydraulic transmission, its power equipment can be separated from the main engine, and the diameter of the plunger can be appropriately increased or the way of multi-cylinder joint work can be used to obtain greater working pressure.
2. A larger working stroke can be obtained, and the maximum working pressure can be applied at any position of the whole stroke, and the return stroke can be made at any position of the working stroke. Filter press filter plate forming hydraulic press is very suitable for processes that require long working strokes and uniform deformation (such as stretching, backlogging, etc.).
3. Larger working space. The filter press filter plate forming hydraulic machine body does not have a huge mechanical transmission mechanism, and its hydraulic cylinders can be arranged according to the requirements of the operation, so a large working space can be easily obtained.
4. The operating pressure can be adjusted to maintain pressure and prevent overload. For example, a filter press with three cylinders (1000 tons, 1500 tons) can easily obtain three different working pressures. The high-pressure liquid is passed into the middle working cylinder to obtain the first-stage pressure; the two-side working cylinders are passed into the second-stage pressure; the three working cylinders are simultaneously fed with high-pressure liquid to obtain the third-stage pressure. The hydraulic press can hold pressure for a long time. The hydraulic system has a pressure regulating device, which can adjust the pressure of the liquid according to the requirements. His safety device can reliably prevent overload.
5. Convenient speed adjustment. Various stroke speeds can be achieved by adjusting the flow of liquid into the working cylinder. For example, it realizes high speed during empty stroke descent and return stroke, and slow speed during working stroke, and this speed regulation is stepless.
6. Work smoothly. The impact, vibration and noise are all small, which is conducive to improving the labor intensity and working conditions of workers.
7. The power transmission of the filter plate forming hydraulic press is flexible transmission, which is simpler than the complex transmission system of mechanical processing, and can avoid mechanical overload.
8. There are three basic action modes of hydraulic press for filter plate press forming: single action, double action and triple action. However, there is only a single linear driving force in the stretching process, so the processing system has a longer service life and a higher workpiece yield.
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