Movable check valve of filter press

Abstract

The invention discloses a movable on-off valve of a filter press. The movable on-off valve comprises a valve body and a valve core, the valve body is of a cylindrical structure and is slidably mounted in the filter press cylinder body, the valve body is driven by a reciprocating propelling device to move back and forth along the inner wall of the filter press cylinder body, and a detachable filter plate is mounted at the front end of the valve body. The valve element is driven by a valve element driver to move front and back, and an internal flow channel of the valve body is opened or closed. The check valve can move back and forth in the filter press cylinder body, and is coordinated and matched with a corresponding valve on the filter press cylinder body in the moving process; therefore, the flow direction of the filtrate and the internal pressure of the filter pressing cylinder body are controlled through on / off, and automatic operation of feeding, filter pressing of thick slurry, discharging of the filtrate and a filter cake and backwashing of a filter plate is realized. Besides, the structure is simple, the manufacturing cost is low, the filter pressing efficiency and effect are greatly improved, and time and labor are saved.

Description

Technical field [0001] The present invention relates to the technical field of a filter machine for solid-liquid separation, and is specifically a mobile stop valve for a filter. Background technique [0002] The filter machine utilizes a special filter medium to apply a certain pressure to the subject, so that a mechanical apparatus for seizing liquid is a commonly used solid-liquid separation device. [0003] When the existing filter machine is filtered, the material (slurry) is injected into the filter chamber of the filtered plate, and the particles in the filter cloth or other filter medium mounted on the filter plate, so that it remains in filtered. The room, and the filtrate is discharged from the liquid elbow, thereby forming a filter cake in the filter chamber, and then pulling the filter plate by the filter machine, so that the filter cake is automatically falling to remove the filter cake to achieve the purpose of filtration. . [0004] Since the filter cake obtained a...

AI Technical Summary

Problems solved by technology

[0004] Since the filter cake obtained after pressing is viscous, it is easy to stick to the filter plate and is not easy to fall off naturally; at the same time, it is also easy to block the filter holes on the filter plate, which affects the efficiency of the filter, and often needs to be removed manually or by high-pressure water. Rinsing is not only time-consuming and labor-intensive, but also easily damages the filter cloth

[0005] In addition, due to the high concentration of the slurry to be filtered, a separate high-power feed pump is required, which undoubtedly increases operating and management costs

Moreover, since the volume and volume difference of the filter chamber of the existing filter press are often fixed, when entering the same amount of slurry with different concentrations, there will be a large gap in the solid-liquid ratio of the filter cake. For example, the water content of the filter cake is high (low solid-liquid ratio), and the filter cake needs to be further concentrated, and the corresponding transportation cost will also increase.

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