JPH06182120A - Filtering or filtering/dust collecting base material - Google Patents

Abstract

PURPOSE:To provide a filtering or filtering/dust collecting base material requiring no filter aid. CONSTITUTION:In the filtering or filtering/dust collecting base material formed into a thin almost disc shape having a through-hole at its almost central part and performing filtering or filtering/dust removal through the gaps formed between the adjacent base materials at the time of lamination, uniform unevenness is formed to both upper and rear surfaces thereof and degree of unevenness is set corresponding to the particle size of solid particles to be removed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filtration or filtration dust collecting base material for filtering or dust collecting solid particles mixed from various fluids such as liquid and gas.

[0002]

2. Description of the Related Art Conventionally, a filtration or filtration dust collecting base material 1 as shown in FIG. 4 (collectively referred to as a filtration base material 1 in this specification) is laminated and formed between adjacent base materials 1. The fluidized beds of various fluids such as liquids and gases are passed through the gaps to separate larger solid particles in the respective gaps, thereby performing filtration or filtration dust collection.

This filtering substrate 1 is formed in a thin disk shape having a through hole 10 in its substantially central portion, and a plurality of projections 5 for forming gaps for passing the fluidized bed are formed on both front and back surfaces thereof. It is formed to project. Then, as shown in FIG. 5, a plurality of the filtration base materials 1 are laminated concentrically to form a cylindrical filter medium, and the inner periphery of the filter medium is separated from the fluid positioned on the outer peripheral side of the cylindrical filter medium. To the side, solid particles smaller than each of the gaps formed in each of the adjacent filter substrates 1 and a fluidized bed are passed to perform filtration or filter dust collection. When removing even solid particles smaller than the gap formed between the adjacent base materials 1, the filter aid layer 6 is formed around the filter medium with a filter aid according to the desired filter particle size. .

However, when the filter aid is used as described above, it is possible to remove solid particles smaller than the gap between the filtration base materials, but the work becomes complicated.

[0005]

Therefore, an object of the present invention is to provide a filtration or filtration dust collecting base material which does not require a filter aid.

[0006]

In order to solve the above problems, the present invention takes the following technical means.
That is, in a filtering or filtering dust collecting base material which is formed in a thin plate substantially disc shape having a through hole 10 at a substantially central portion and which filters or collects dust by a gap formed between adjacent ones when laminated, Irregularities are uniformly formed on both front and back surfaces, and the degree of the irregularities is set according to the particle size of the solid particles to be removed.

[0007]

As a result of adopting the above means, the present invention has the following effects. When the filtration base materials of the present invention are laminated and filtered, a constant gap is formed between the adjacent filtration base materials due to the uniform unevenness formed on the surfaces to be brought into contact with each other. Since the degree of unevenness on the front and back surfaces of the substrate is set according to the particle size of the solid particles to be removed, it is possible to obtain a gap corresponding to the desired filtration particle size.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The filtration substrate of the present invention will be described below with reference to the drawings shown as embodiments. FIG. 1 shows a filter substrate 1 of this embodiment, which is formed of a ceramic material in the shape of a thin disk having a through hole 10 at a substantially central portion. Irregularities are uniformly formed on both the front and back surfaces, and the degree of the irregularities is set according to the particle size of the solid particles to be removed. In this example, the unevenness was formed as a satin pattern having a height of about 1 μ. When the filtration base materials 1 are stacked, filtration or filtration dust collection processing is performed by the gaps formed between adjacent ones. In the filtration base material 1 of this example, solid particles having a particle size of about 2 μm or more could be removed.

The filter substrate 1 can be manufactured by firing zirconia ceramic. FIG. 2 and FIG. 3 are examples of the filtering device configured by using the filtering substrate 1 as described above, and the configuration will be described. FIG. 3 shows a cylinder (hereinafter referred to as a fluidized bed outlet cylinder 2) for leading out a fluidized bed obtained by filtration or filtration dust collection. This fluidized bed outlet cylinder 2
Is a hollow square tube 2 having a plurality of perforations 20 formed on each surface thereof and to be inserted into an inner peripheral side of a laminated body of filtration base materials 1 formed in a cylindrical shape.
A and a bolt portion 21 attached to both ends of the square tube 2A by welding. A guide hole 22 is bored in the axial direction of only one of the bolt portions 21 at both ends on the fluidized bed outlet side, and the fluidized bed obtained by filtration or filter dust collection is led out from the guide hole 22.

The bolt portion 21 having the guide hole 22 is attached to the fluidized-bed partition wall 3 by a nut through a washer and a spring washer. The fluidized bed partition wall 3 is a mixture of an untreated fluid storage tank (hereinafter referred to as untreated tank 3A) and a treated fluidized bed storage tank (hereinafter referred to as treated tank 3B) before filtration or filtration dust collection. Is to prevent.

When the laminated body of the filtration base material 1 is formed on the outer peripheral side of the fluidized bed lead-out tube 2, after the nut is unscrewed and the fluidized bed lead-out tube 2 is removed from the fluidized bed partition wall 3. The filter substrate 1 is laminated between the nut, the washer, and the spring washer screwed to the bolt portion 21 on the other end side. After that, it is fixed to the fluidized-bed partition wall 3. When the fluid is filtered or dust is collected by filtration, it is performed as follows. A fluid to be filtered or dust-collected is caused to flow into the untreated tank 3A from an inflow port 30 provided near the lower end of the untreated tank 3A. When a certain amount of pressure is applied to the fluid in the untreated tank 3A, solid particles having a larger particle size are separated from each other in the multi-layered gap between the adjacent filter base materials 1 of the filter medium, and the solid particles smaller than the gap and the fluidized bed are separated. Filtering or filtration dust collection is performed by passing only the inner side of the filter medium.

The fluidized bed which has reached the inner peripheral side of the laminated body of the filter substrate 1 reaches the fluidized bed outlet cylinder 2 through the perforations 20 and is sent from the guide hole 22 to the treated tank 3B. In this way, the fluid can be filtered or filtered and dust can be collected. After filtering or filtering dust to some extent and once the filter residue is collected, this filtering operation is once interrupted and so-called back washing is performed. When the filtration base materials 1 are stacked and filtered, a constant gap is formed between the adjacent filtration base materials 1 due to the uniform unevenness formed on the surfaces to be brought into contact with each other. Since the degree of unevenness on the front and back surfaces of the base material 1 is set according to the particle size of the solid particles to be removed, it is possible to obtain a gap according to the desired filtration particle size.
Therefore, it is possible to obtain the filtration or filtration dust collection substrate 1 which does not require a filter aid.

[0013]

EFFECTS OF THE INVENTION The present invention has the above-mentioned constitution, and since a gap corresponding to a desired filtration particle size can be obtained, a filtration or filtration dust collection base material which does not require a filter aid is provided. Can be provided.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a filtration substrate of the present invention.

FIG. 2 is a cross-sectional view illustrating a usage state of an example of a filtering device configured by using the filtering base material of FIG.

FIG. 3 is a side view of a fluidized bed outlet cylinder and a fluidized bed partition wall used in an example of a filtration device configured using the filtration base material of FIG. 1.

FIG. 4 is an overall perspective view of a conventional filtration substrate.

FIG. 5 is a partially enlarged cross-sectional view illustrating a usage state of an example of a filtering device configured using the filtering base material of FIG.

[Explanation of symbols]

 10 through holes

Claims (1)

[Claims] 1. A filtering or filtering dust collecting base material which is formed in a thin plate substantially disk shape having a through hole at a substantially central portion and which filters or collects dust by a gap formed between adjacent ones when laminated. In the above, the filtration or filtration dust collecting substrate is characterized in that unevenness is uniformly formed on both front and back surfaces thereof, and the degree of the unevenness is set according to the particle diameter of the solid particles to be removed.