A filter plate for a disc filter that can be maintained without disassembly

Abstract

A detachable-free filter plate for a disk filter, which relates to the technical field of disk filters, includes a filter plate body. The filter plate body is composed of one or more sector-shaped units mounted on a central shaft. Mounting holes for mounting the sector-shaped units are provided on the central shaft. When there are multiple sector-shaped units, the multiple sector-shaped units share a flow channel, and the mounting holes on the central shaft are evenly arranged in the circumferential direction. The sector-shaped unit is strip-shaped, with its upper end being flat and its lower end being elliptical. There is a smooth transition between the upper end and the lower end of the sector-shaped unit. It thickens gradually from top to bottom in the thickness direction and narrows gradually from top to bottom in the width direction, and the outer contour perimeter of any cross-section perpendicular to the axial direction of the sector-shaped unit is equal. The structure of the present invention is novel and easy to use. When installing the filter cloth, the top of the filter cloth is directly sutured, effectively avoiding the air leakage caused by poor welding. When disassembling the filter cloth, the filter plate does not need to be disassembled, saving a large amount of labor for disassembling the filter plate.

Description

Technical Field

[0001] The present invention relates to the technical field of disk filters, and particularly to a detachable-free filter plate for a disk filter. Background Art

[0002] As is well known, disk filters are mainly used for the filtration and dehydration of aluminum hydroxide seed liquid in alumina plants in the non-ferrous metal industry, coal slime in the coal industry, and flotation concentrates in various mines; through the suction action of a vacuum pump, the slurry to be filtered forms a filter cake on the filter cloth of the filter plate, and the filtrate sequentially passes through the filter cloth and the filter plate and is discharged from the inner cavity of the filter plate and the flow channel of the central shaft to achieve the purpose of solid-liquid separation.

[0003] A filter cloth bag is sleeved outside each filter plate of the disk filter. The filter cloth bag is a bag with a larger opening at one end and a smaller opening at the other end. It is inserted from the handle of the filter plate, and the smaller opening end is clamped at the handle and tightened with a hose clamp. The larger opening end is sealed at the outer circumference of the filter plate by welding, gluing or folding and wrapping. Since the outer circumference of the filter plate is large and the handle is small, the filter cloth must be sleeved from the handle to the outer circumference of the filter plate. The filter plates with the filter cloth sleeved are sequentially installed on the central shaft. The filter plates are closely arranged with each other to form a circular filter disk, and the outside is tightened by a guide rail. During normal use, the filter cloth sleeved on the filter plate is a vulnerable part. After being used for a period of time, the filter cloth needs to be replaced. When replacing, the guide rail needs to be removed, the fixing device at the handle is loosened, the filter plate is pulled out from the central shaft, the filter cloth to be replaced is removed, and a new filter cloth is sleeved.

[0004] Since the filter cloth needs to be replaced, the filter plate needs to be frequently disassembled. Therefore, the filter plate cannot be very heavy. Generally, the filter plate is in the form of a plastic filter plate, a filter plate with a steel frame embedded with a polymer material, or a whole steel form made of a 0.5-2 mm steel plate. During the disassembly process, the guide rail and the fixing screws or tie rods at the bottom of the filter plate need to be removed. The disassembly and assembly are troublesome, the replacement time is long, and the labor intensity is very high; the filter plates are installed on the central shaft one by one, and the deflection degree needs to be corrected during each installation to ensure the flatness of the filter disk. The workload is large and repetitive. Frequently disassembling the filter plate causes poor root sealing, deflection of the filter plate, and instability during operation, greatly reducing the service life of the filter plate and the filter cloth. Summary of the Invention

[0005] In order to overcome the deficiencies in the background art, the present invention discloses a detachable-free filter plate for a disk filter.

[0006] In order to achieve the above-mentioned invention purpose, the present invention adopts the following technical solutions:

[0007] A detachable filter plate for a disk filter, comprising a filter plate body, which is composed of one or more fan-shaped units mounted on a central shaft. Mounting holes for mounting the fan-shaped units are provided on the central shaft. When there are multiple fan-shaped units, they share a flow channel, and the mounting holes on the central shaft are evenly arranged along the circumferential direction. The fan-shaped unit is strip-shaped, with its upper end being flat and its lower end being elliptical. There is a smooth transition between the upper end and the lower end of the fan-shaped unit, which thickens gradually from top to bottom in the thickness direction and narrows gradually from top to bottom in the width direction, and the outer contour perimeters of any cross-sections perpendicular to the axial direction of the fan-shaped unit are equal.

[0008] In the detachable filter plate of the disk filter, the fan-shaped unit is hollow, and a plurality of mesh holes are provided on its surface. The lower ends of the fan-shaped units are respectively fixed in the mounting holes of the central shaft and communicate with the inner cavity of the central shaft.

[0009] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0010] In the detachable filter plate of the disk filter of the present invention, the fan-shaped units are integrally formed and have a relatively thick material, with a large overall stiffness, effectively improving its service life. After the fan-shaped units are assembled into a filter disk, the upper and lower surfaces of the filter disk surface bulge gradually from the outer ring to the inner ring. When the disk diameter is fixed, the effective filtration area is increased. The structure of the present invention is novel and easy to use. When installing the filter cloth, the large end of the filter cloth is directly sewn, and no clips are used for sealing, effectively avoiding the air leakage caused by poor welding. When disassembling the filter cloth, the filter plate does not need to be disassembled, saving a large amount of labor for disassembling the filter plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural diagram of the filter disk of the present invention;

[0012] Figure 2 is a schematic structural diagram of the filter plate of the present invention;

[0013] Figure 3 is a schematic structural diagram of the fan-shaped unit of the present invention;

[0014] In the figure: 1, filter disk; 2, filter plate; 3, fan-shaped unit. DETAILED DESCRIPTION OF THE INVENTION

[0015] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0016] Combined with the attached Figure 2-3The detachable filter plate of the disk filter includes a filter plate body 2, which is composed of one or more sector units 3 mounted on a central shaft. Mounting holes for mounting the sector units 3 are provided on the central shaft. When there are multiple sector units 3, they share a flow channel, and the mounting holes on the central shaft are evenly arranged along the circumferential direction. The sector unit 3 is strip-shaped, with its upper end being flat and its lower end being elliptical. There is a smooth transition between the upper end and the lower end of the sector unit 3. It thickens gradually from top to bottom in the thickness direction and narrows gradually from top to bottom in the width direction, and the perimeter of the outer contour of any cross-section perpendicular to the axial direction of the sector unit 3 is equal.

[0017] The detachable filter plate of the disk filter, the sector unit 3 is hollow, and a plurality of mesh holes are provided on its surface. The lower ends of the sector units 3 are respectively fixed in the mounting holes of the central shaft and communicate with the inner cavity of the central shaft.

[0018] Implementing the detachable filter plate of the disk filter of the present invention, as shown in the attached Figure 1 figure, after installation, the filter disk is composed of 60 filter plates 2, and two sector units 3 are provided on each single filter plate 2. Their lower ends are respectively fixedly installed in the mounting holes on the central shaft, and the inner cavities of the sector units 3 communicate with the inner cavity of the central shaft. Mesh holes are provided on the filtering surface and the bulging surface of the sector unit. When installing the filter cloth, the filter cloth is in the form of a long strip-shaped cloth pocket with the chord length of the big head at the upper end of the sector unit 3 as the standard. The style of the filter cloth is designed according to the number of sector units 3 provided on each filter plate. The filter cloth can be separate, with each sector unit being sleeved with a filter cloth, or the lower ends can be connected. When two sector units 3 are provided, the filter cloth is in the shape of a pair of trousers with two legs, and each sector unit 3 is sleeved in one leg of the trousers. When there are multiple sector units 3, the number of trouser legs of the filter cloth can be increased accordingly. The top of the filter cloth can be directly sewn, with only an opening at the lower end. It is inserted from the upper end of the sector unit 3, and the root of the filter cloth is fixed at the lower end of the sector unit 3 and tightened with a hose clamp. When replacing the filter cloth, there is no need to disassemble the sector unit, and only the filter cloth needs to be disassembled.

[0019] Parts not detailed in the present invention are prior art.

[0020] The embodiments selected in this article for disclosing the invention purpose of the present invention are currently considered appropriate. However, it should be understood that the present invention is intended to include all variations and improvements of all embodiments within the scope of this concept and invention.

Claims

1. A filter plate of a disk filter machine that can be maintained without disassembly, including a filter plate body, characterized in that: The filter plate body is composed of one or more sector units mounted on the central axis. There are mounting holes for mounting the sector units on the central axis. When there are multiple sector units, the multiple sector units share a flow channel, and the mounting holes on the central axis are evenly arranged in the circumferential direction; the sector units are strip-shaped, the upper end of the sector unit is flat, the lower end is elliptical, and there is a smooth transition between the upper end and the lower end of the sector unit. It thickens gradually from top to bottom in the thickness direction and narrows gradually from top to bottom in the width direction, and the outer contour perimeter of any cross-section perpendicular to the axial direction of the sector unit is equal; the sector unit is hollow, and there are multiple mesh holes on its surface. The lower ends of the sector units are respectively fixed in the mounting holes of the central axis and communicate with the inner cavity of the central axis.

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