Filter plate of a filter press

Abstract

A filter plate of a filter press relates to the technical field of solid-liquid separation equipment. It includes a filter plate body, characterized in that: the filter plate body is a cylindrical hollow spiral plate, the inner cavity of the hollow spiral plate serves as a guide channel, a water outlet connected to the guide channel is provided on the filter plate body, and a plurality of filter holes connected to the guide channel are also provided on the filter plate body along the spiral direction. When the present invention is working, it is arranged in a filter press barrel, and the cylindrical spiral plate is compressed by a power mechanism to complete the compression of the solid matter. After the compression is completed, the power mechanism returns to its position, and the cylindrical spiral plate itself has a restoring force, which can realize self-uniform rebound during the unloading process, which can not only reduce energy loss, but also ensure a good separation effect between the filter cake and the filter cloth, and realize rapid unloading.

Description

Technical Field

[0001] The invention relates to the technical field of solid-liquid separation equipment, in particular to a filter plate of a filter press. Background Art

[0002] The filter press uses a special filter medium to apply a certain pressure to the object, so that the liquid can be dialyzed out. It is a commonly used solid-liquid separation equipment. It was used in chemical production in the early 18th century and is still widely used in chemical, pharmaceutical, metallurgical, dye, food, brewing, ceramics and environmental protection industries.

[0003] The existing filter press is composed of multiple filter plates. During filtration, the filter plates are squeezed together to press the solid-liquid mixture into a mud cake, and the liquid is discharged, thereby achieving solid-liquid separation. The technical defects of the existing filter plates are: 1) After the filtration is completed, the separation of the filter plates needs to be completed with the assistance of power, and the separation effect between the filter cake and the filter plate is poor; 2) The solid-liquid separation pressing pressure is small, the filter cake has a low cake thickness and a high water content. Summary of the invention

[0004] The purpose of the present invention is to provide a filter plate for a filter press, which can effectively solve the problems in the background technology.

[0005] The technical solution to achieve the above-mentioned purpose is: a filter plate of a filter press, including a filter plate body, characterized in that: the filter plate body is a cylindrical hollow spiral plate, the inner cavity of the hollow spiral plate serves as a guide channel, a water outlet connected to the guide channel is provided on the filter plate body, and a plurality of filter holes connected to the guide channel are also provided on the filter plate body along the spiral direction.

[0006] Furthermore, the filter plate body is made of PEEK material.

[0007] Beneficial effects of the present invention:

[0008] When the present invention is working, it is arranged in the filter press barrel, and then the cylindrical spiral plate is compressed by the power mechanism to complete the compression of the solid material. After the compression is completed, the power mechanism returns to its position, and the cylindrical spiral plate itself has a restoring force, and can realize self-uniform rebound during the unloading process, which can not only reduce energy loss, but also ensure a good separation effect between the filter cake and the filter cloth, and realize rapid unloading.

[0009] The invention adopts a cylindrical spiral plate, which has a simple structure, is easy to compress, has a large pressing pressure, has a high filter cake density and a low moisture content. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the structure of the present invention provided with a filter cloth;

[0011] Figure 2 for Figure 1 Side view of

[0012] Figure 3 It is a working state diagram of the present invention. DETAILED DESCRIPTION

[0013] like Figure 1 , 2 As shown, the present invention includes a filter plate body 1, which is a cylindrical hollow spiral plate. The inner cavity of the hollow spiral plate serves as a guide channel 1.3. The filter plate body 1 is provided with a water outlet 1.1 connected to the guide channel 1.3. The filter plate body 1 is also provided with a plurality of filter holes 1.2 connected to the guide channel 1.3 along the spiral direction.

[0014] As a further explanation of this embodiment, in order to facilitate water discharge, a water outlet 1.1 is arranged at one end of the filter plate body 1.

[0015] The filter plate body 1 is made of PEEK material, and its Chinese name is: polyetheretherketone resin. The characteristics of PEEK material are: 1) lower specific gravity and lighter overall weight; 2) low water absorption, can be used in humid environment or high-temperature steam, and can even be immersed in water for a long time and still maintain good mechanical strength; 3) corrosion resistance, PEEK springs can withstand most corrosive solvents except concentrated sulfuric acid.

[0016] like Figure 1 , 3 As shown, when the filter plate body 1 is working, the outer cover is provided with a filter cloth 2, which is arranged in a filter barrel 3. A passive pressure plate 4 is sealed and arranged at one end of the filter barrel 3, and an active pressure plate 5 is sealed and arranged at the other end of the filter barrel 3.

[0017] During filtration, the active pressure plate 5 can be driven by the hydraulic cylinder to make a feeding movement towards the left passive pressure plate 4, and the pitch between the filter plate bodies 1 is reduced. The feeding distance is determined by the water (liquid) content and compressibility of the solids. After that, the pressure of the hydraulic cylinder is kept constant for a period of time, so that the filter cake in the filter barrel 3 is fully squeezed, and its water or other liquids are fully discharged to form a filter cake with a higher solid content.

Claims

1. A filter plate of a filter press, comprising a filter plate body, characterized in that: The filter plate body is a cylindrical hollow spiral plate, the inner cavity of the hollow spiral plate serves as a guide channel, a water outlet connected to the guide channel is arranged on the filter plate body, the water outlet is arranged at one end of the filter plate body, and a plurality of filter holes connected to the guide channel are also arranged on the filter plate body along the spiral direction; the filter plate body is made of PEEK material.

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