A sector plate of a disc type vacuum filter

Abstract

A fan-shaped plate of a disc vacuum filter includes a cavity plate, which is formed by butting and fixing two shells with filter holes on the surface. The cavity plate is fan-shaped, and a fan-shaped plate handle for connecting to the central axis of the disc vacuum filter is fixed at one end of the cavity plate close to the center of the sector. The inner cavity of the cavity plate is divided into a plurality of variable cross-section flow channels extending along the radial direction of the sector by a rib plate fixed inside the cavity plate, one end of the variable cross-section flow channel is connected to the inner cavity of the fan-shaped plate handle, and the other end is closed. In the fan-shaped cavity plate, the width of the variable cross-section flow channel gradually decreases from the closed end to the end connected to the fan-shaped plate handle, while the height gradually increases. The fan-shaped plate of the disc vacuum filter can meet the requirements of filtering ultrafine particle materials. It has a simple structure, high strength and durability, and low manufacturing cost. At the same time, the filtrate flows relatively smoothly in the fan-shaped plate, which reduces energy consumption.

Description

Technical Field

[0001] The utility model relates to the technical field of disc type vacuum filters, in particular to a sector plate of a disc type vacuum filter. Background Art

[0002] Disc vacuum filter is a kind of equipment used for solid-liquid separation. It has been rapidly developed and widely used in the past forty years and has become the most widely used filtering equipment in the mineral processing industry. In particular, large-scale metal mineral processing plants abroad basically use disc vacuum filters. As the mineral particle size becomes finer and finer, the filtration of mineral processing products becomes increasingly difficult. Therefore, it is an important task for mineral processing plants at home and abroad to continuously adapt to the filtration of finer and finer materials. With the large-scale filter and the requirement to process ultrafine particles, the requirements for the moisture content of the filter cake are becoming more and more stringent, and the unloading method has also changed accordingly. It requires a combination of instantaneous blowing and scraper unloading to achieve the production capacity and moisture requirements. This puts forward new requirements for the key part of the filter, the fan plate.

[0003] At present, there are three main types of fan-shaped plates, namely plastic fan-shaped plates, steel-plastic composite fan-shaped plates and steel corrugated plates. Plastic fan-shaped plates have problems of deformation and insufficient strength for large-scale use. They are prone to natural deformation and distortion during use, which in turn causes the filter cloth to be scratched and damaged by the trough body; the flatness of the steel-plastic composite fan-shaped plates is difficult to ensure, and they are heavy and costly to produce. During the nesting process of the steel frame and the plastic filter plate, it is difficult to ensure the shape accuracy of the filter plate; the corrugated plates are generally thinner and have poor wear resistance. Once damaged, they often cause the filter cloth to be damaged. During the blowing and unloading process, it is also easy to backwash water, resulting in poor filtering effect, and cannot adapt to the high-load dehydration operation of the mining filter.

[0004] Whether the fan-shaped plate design is reasonable directly affects the filtering performance of the filter. The fan-shaped plates in the existing technology need to be improved in strength, durability and fatigue resistance. At the same time, due to the viscosity of the material, the filtrate does not flow smoothly in the fan-shaped plate, and the flow resistance of the filtrate will lead to high energy consumption.

[0005] Therefore, it is urgent to develop a fan-shaped plate of a disc vacuum filter. Utility Model Content

[0006] The utility model aims to provide a fan-shaped plate of a disc vacuum filter, which can meet the requirements of filtering ultrafine particle materials, has a simple structure, high strength and durability, and low manufacturing cost. At the same time, the filtrate flows relatively smoothly in the fan-shaped plate, reducing energy consumption.

[0007] The technical solution adopted by the utility model is: a sector plate of a disc type vacuum filter, comprising a cavity plate;

[0008] The cavity plate is formed by butting and fixing two shells with filter holes on the surface. The cavity plate is fan-shaped, and a fan-shaped plate handle for connecting the central axis of the disc vacuum filter is fixed at one end of the cavity plate close to the center of the fan-shaped circle;

[0009] The inner cavity of the cavity plate is divided into multiple variable-section flow channels extending along the fan-shaped radial direction by a rib plate fixed therein. One end of the variable-section flow channel is connected to the inner cavity of the fan-shaped plate handle, and the other end is closed. In the fan-shaped cavity plate, the width of the variable-section flow channel gradually decreases from its closed end to the end connected to the fan-shaped plate handle, while the height gradually increases.

[0010] As a preferred solution, two sides of the rib plate are respectively connected to two shells.

[0011] As a preferred solution, the rib plate includes two second rib plates and a first rib plate between the two second rib plates;

[0012] The two second ribs and the first rib both extend toward the fan-shaped center of the cavity plate, and the length of the second rib is greater than that of the first rib.

[0013] As a preferred solution, one end of the two second ribs extends to the inner cavity of the fan-shaped plate handle and is fixed to the inner wall of the fan-shaped plate handle.

[0014] As a preferred solution, one end of the fan-shaped plate handle is a boss section, which is inserted into the jack of the cavity plate and fixed to the cavity plate, and the other end of the fan-shaped plate handle is a cylindrical section for connecting to the central axis of the disc vacuum filter.

[0015] As a preferred solution, a hook seat is provided on the outer side of the cylindrical section, and the hook seat cooperates with a fastener to fix and connect the central axis of the disc vacuum filter.

[0016] As a preferred solution, there are two hook seats, and the two hook seats are symmetrical about the axis of the cylindrical segment.

[0017] The beneficial effects of the utility model are:

[0018] Based on the defects of the prior art, a fan-shaped plate of a disc vacuum filter is provided.

[0019] 1. The cavity plate is welded by two half symmetrical shells. The internal reinforcement plate greatly improves the rigidity and strength of the fan-shaped plate. The reinforcement plate also effectively supports the filter surface of the fan-shaped plate to prevent the filter surface from sinking and deforming, creating good conditions for the stable operation of the equipment.

[0020] 2. The variable cross-section flow channel composed of the rib plate and the shell increases the filtration area at one end of the fan-shaped plate handle of the variable cross-section flow channel, ensuring that the filtrate flows more smoothly and reduces energy consumption.

[0021] 3. The shell is made of bent steel plate, with punched holes on the surface, high opening rate, laser butt welding, small deformation, high flatness, simple production, and can meet the requirements of scraper unloading to ensure the moisture content of the filter cake.

[0022] 4. A hook seat is provided on the fan-shaped plate handle to facilitate the removal of the fan-shaped unit from the central axis of the disc vacuum filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a cross-sectional schematic diagram of the utility model;

[0025] Figure 2 It is a schematic diagram of the shaft cross section of the utility model;

[0026] Figure 3 for Figure 1 Middle AA section view;

[0027] Figure 4 It is a schematic diagram of the utility model;

[0028] Figure 5 for Figure 2 Schematic diagram of the BB cross-section.

[0029] Reference numerals:

[0030] 1. cavity plate, 101, shell;

[0031] 2. fan-shaped plate handle, 201, boss section, 202, cylindrical section, 203, hook seat;

[0032] 3. Rib plate, 301, first rib plate, 302, second rib plate;

[0033] 4. Variable cross-section flow channel. DETAILED DESCRIPTION

[0034] The present invention is described in detail below by way of exemplary embodiments. However, it should be understood that, without further description, elements, structures and features in one embodiment may also be beneficially combined in other embodiments.

[0035] It should be noted that: unless otherwise defined, the technical terms or scientific terms used in this article should be understood by people with ordinary skills in the field to which the utility model belongs. The words "one", "an" or "the" and the like used in the patent application specification and claims of this utility model do not express quantitative restrictions, but indicate the existence of at least one; the "first", "second" and "third" used in this article should not be regarded as restrictions on the order of components, but are only used to distinguish different components; "include" or "comprise" and other similar words indicate that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, but do not exclude other elements or objects with the same function.

[0036] In order to more clearly describe the specific structural composition of the fan-shaped plate of the disc vacuum filter, Figure 1-5 Describe this embodiment:

[0037] like Figure 1 As shown, a sector plate of a disc vacuum filter comprises a cavity plate 1, which is formed by butting and fixing two shells 101 with filter holes on the surface. The cavity plate 1 is sector-shaped, and a sector plate handle 2 for connecting the central axis of the disc vacuum filter is fixed at one end of the cavity plate 1 close to the sector circle center; the cavity plate 1 is sector-shaped, and a sufficient amount of cavity plates 1 surround a cylindrical filter disc during use;

[0038] The inner cavity of the cavity plate 1 is divided into a plurality of variable cross-section flow channels 4 extending along the sector radial direction by the rib plate 3 fixed therein. One end of the variable cross-section flow channel 4 is connected to the inner cavity of the sector plate handle 2, and the other end is closed. In the sector cavity plate 1, the width of the variable cross-section flow channel 4 gradually decreases from its closed end to the end connected to the sector plate handle 2, while the height gradually increases. During use, the filtrate enters the variable cross-section flow channel 4 through the filtration hole, and enters the sector plate handle 2 and the central axis of the disc vacuum filter through the end of the variable cross-section flow channel 4 near the center of the cavity plate 1. Since the width of the end of the entire cavity plate 1 near the center axis gradually decreases (at Figure 1 As can be seen in FIG. 1 ), the end of the variable cross-section flow channel 4 is therefore heightened (in Figure 2 As can be seen in the figure), by increasing the cross-sectional area of ​​the variable-section flow channel 4 at this end, the filtrate converges radially toward the central axis more smoothly, which is beneficial for the filtrate to transfer to the central axis of the disc vacuum filter, improves smoothness and reduces energy consumption.

[0039] During the processing of the cavity plate 1, the shell 101 is made of a bent perforated plate, and many filter holes are evenly distributed on the surface within the opening range at a certain interval, with a high opening rate. During the manufacturing process, the smooth surface is placed on the non-bending side, and the filter medium is located on the outside of the shell, which can ensure that the filtrate enters the fan-shaped plate through the filter medium and the openings on the shell surface, and the filtrate is discharged. The two shells 101 are butt-welded by laser welding, with small deformation, and post-welding correction can ensure flatness deviation.

[0040] See also Figure 3 The cavity plate 1 is welded with two symmetrical halves of the shell 101. The rib plate 3 is added inside to greatly improve the rigidity and strength of the sector plate. The rib plate 3 also effectively supports the filter surface of the sector plate to prevent the filter surface from being sunken and deformed, creating good conditions for the stable operation of the equipment.

[0041] The two sides of the rib plate 3 can also be connected to the two shells 101 by welding, which plays a reinforcing role and makes the connection between the two shells 101 more stable;

[0042] See also Figure 1 Specifically, three rib plates 3 can be provided to divide the cavity plate 1 into four variable-section flow channels 4 to ensure the cake-removing effect;

[0043] In the above embodiment, the rib plate 3 includes two second rib plates 302 and a first rib plate 301 between the two second rib plates 302; the two second rib plates 302 and the first rib plate 301 both extend toward the fan-shaped center of the cavity plate 1, and the length of the second rib plate 302 is greater than the length of the first rib plate 301. Since the end of the variable cross-section flow channel 4 close to the central axis is narrowed in width, too many rib plates will increase the resistance to the filtrate, so the length of the first rib plate 301 is reduced at this end to reduce the resistance.

[0044] Since the cavity plate 1 and the fan-shaped plate handle 2 are fixed after welding, in order to increase the strength of the connection between the two, one end of the two second rib plates 302 is extended to the inner cavity of the fan-shaped plate handle 2 and then fixed to the inner wall of the fan-shaped plate handle 2.

[0045] See also Figure 2 and Figure 5One end of the fan-shaped plate handle 2 is a boss section 201, which is inserted into the jack of the cavity plate 1 and then welded and fixed. The other end of the fan-shaped plate handle 2 is a cylindrical section 202 for connecting the central axis of the disc vacuum filter. A hook seat 203 is provided on the outer side of the cylindrical section 202. The hook seat 203 cooperates with fasteners to fix the central axis of the disc vacuum filter. There are two hook seats 203, and the two hook seats 203 are symmetrical about the axis of the cylindrical section 202. During installation, the cylindrical section 202 is installed in the central axis hole, and the two hook seats 203 form an S hook shape. Two bolt holes that form a certain angle with the central axis are set on the central axis. The central axis and the fan-shaped plate handle 2 are connected together by two bolts and nuts. The nut is pressed on the hook seat 203. When disassembling, you only need to loosen the nut and rotate a certain angle to pull out the fan-shaped plate, which is convenient for disassembly.

[0046] The parts not described in detail in this embodiment are prior art.

[0047] It should be noted that although the utility model is described through the above embodiments, the utility model can also have other multiple embodiments. Without departing from the spirit and scope of the utility model, it is obvious that those skilled in the art can make various corresponding changes and deformations to the utility model, but these changes and deformations should all fall within the scope of protection of the attached claims of the utility model and their equivalents.

Claims

1. A sector plate of a disc vacuum filter, characterized in that: comprising a cavity plate (1); The cavity plate (1) is formed by butting and fixing two shells (101) with filter holes on their surfaces. The cavity plate (1) is fan-shaped, and a fan-shaped plate handle (2) for connecting to the central axis of the disc vacuum filter is fixed at one end of the cavity plate (1) close to the center of the fan-shaped circle. The inner cavity of the cavity plate (1) is divided into a plurality of variable cross-section flow channels (4) extending in a sector-shaped radial direction by a rib plate (3) fixed therein; one end of the variable cross-section flow channel (4) is communicated with the inner cavity of the sector plate handle (2) and the other end is closed; within the sector-shaped cavity plate (1), the width of the variable cross-section flow channel (4) gradually decreases from its closed end to the end connected to the sector plate handle (2), while the height gradually increases.

2. The sector plate of a disc vacuum filter according to claim 1, characterized in that: The two sides of the rib plate (3) are respectively connected to two shells (101).

3. The sector plate of a disc vacuum filter according to claim 1, characterized in that: The rib plate (3) comprises two second rib plates (302) and a first rib plate (301) located between the two second rib plates (302); The two second rib plates (302) and the first rib plate (301) both extend towards the fan-shaped center of the cavity plate (1), and the length of the second rib plate (302) is greater than the length of the first rib plate (301).

4. The sector plate of a disc vacuum filter according to claim 3, characterized in that: One end of the two second rib plates (302) extends to the inner cavity of the fan-shaped plate handle (2) and is fixed to the inner wall of the fan-shaped plate handle (2).

5. The sector plate of a disc vacuum filter according to claim 1, characterized in that: One end of the fan-shaped plate handle (2) is a boss section (201), and the boss section (201) is inserted into the insertion hole of the cavity plate (1) and the two are fixed. The other end of the fan-shaped plate handle (2) is a cylindrical section (202) used for connecting to the central axis of the disc vacuum filter.

6. The sector plate of a disc vacuum filter according to claim 5, characterized in that: A hook seat (203) is provided on the outer side of the cylindrical section (202), and the hook seat (203) cooperates with a fastener to be fixedly connected to the central axis of the disc vacuum filter.

7. The sector plate of a disc vacuum filter according to claim 6, characterized in that: There are two hook seats (203), and the two hook seats (203) are symmetrical about the axis of the cylindrical section (202).

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