JP3159378U - Filtration device - Google Patents

Abstract

The present invention provides a filtration device that is easy to manufacture, has a low running cost, and can be used any number of times without discarding the filter. A filter device tank is provided with a filter formed by laminating a plurality of washers having a hole in the center and having surface irregularities formed by shot blasting. A backwashing device is provided that is connected to the filter and backwashes the fluid by flowing the fluid in the direction opposite to the direction in which the treatment liquid passes from the hole. The washer is fixed by a bolt and a nut that pass through the hole, and a through hole that guides the treated liquid after filtration to the outside is provided in the shaft of the bolt. The filtration device tank is provided with a suction port for introducing the treatment liquid on the side surface, and the bottom is formed in a tapered shape. [Selection] Figure 1

Description

The present invention aims to accurately separate micron foreign matters contained in a liquid, and relates to precisely separating the liquid and foreign matters by feeding the liquid into a filtration device tank with a pump.

Conventionally, a filter (see, for example, Patent Documents 1 and 2) is generally used to separate the liquid to separate the liquid from the foreign matter. However, the filter is clogged by repeated use, resulting in a new filter. It was necessary to replace and use. Also, the clogged filter had to be treated separately as secondary waste.

JP-A-7-124446 JP-A-6-126112

The problem the device is trying to solve

However, a micron filter with small particles is clogged quickly, and in terms of cost, the higher the finer the particles, the higher the running cost, and the filter itself takes in the particles, making it difficult to extract only the particles from the liquid.

Therefore, the present invention aims to realize a filter that is easy to manufacture, has a low running cost, and can be used any number of times without being discarded.

Means for solving the problem

According to the first aspect of the present invention, there is provided a filtration device including a filter in which a plurality of washers having a hole portion in the center and having irregularities formed on a surface by shot blasting are stacked inside the filtration device tank. Then, a technical means is used that removes foreign substances by passing a treatment liquid for performing a filtration treatment from the outside of the filter through a gap formed by communicating the irregularities.

According to the first aspect of the present invention, since irregularities are formed on the surface by shot blasting and a plurality of washers are stacked, it can be used as a filter, so that the structure is simple and the running cost can be reduced. Moreover, particles of different sizes can be captured by changing the roughness of the uneven surface. Since this filter is simply a stack of thin washers, it is easy to use and can be used in combination with longer or dozens if flow is required.

According to a second aspect of the present invention, in the filtration device according to the first aspect, the backwashing is performed by backflow by flowing a fluid in a direction opposite to a direction in which the treatment liquid passes from the hole portion. The technical means of having a device is used.

According to the second aspect of the present invention, the clogging of the particles adhering to the filter surface can be avoided by backwashing, so that it can be used repeatedly and therefore the running cost can be reduced very much.

According to a third aspect of the present invention, in the filtration device according to the first or second aspect, the washer is fixed by a bolt penetrating the hole and a nut, The technical means that a through hole for guiding the processing solution after the filtration treatment to the outside is provided.

According to the third aspect of the present invention, the washer can be tightened from above and below with a nut via a bolt to eliminate looseness between the washers. Further, since the bolt is provided with a through hole that guides the treated liquid after the filtration treatment to the outside, the treated liquid from which the foreign matter has been removed can be collected smoothly.

According to a fourth aspect of the present invention, in the filtration device according to any one of the first to third aspects, the tank of the filtration device includes a suction port for introducing a treatment liquid on a side surface, and a bottom portion is tapered. The technical means of forming is used.

According to the invention described in claim 4, since the suction port for introducing the treatment liquid into the filtration device tank is attached so as to contact the inner surface of the filtration device tank, when the treatment solution enters under pressure, The treatment liquid rotates at a high speed while rubbing strongly against the inner wall of the filtration device tank with a centrifugal force to exert a cyclone effect, so that the foreign matter on the washer surface is not easily clogged. Moreover, since the bottom part of the filtration apparatus tank is formed in the taper shape, the foreign material which fell from the top is hard to collect, and can collect | recover a foreign material smoothly.

It is sectional drawing of embodiment for implementing this invention. It is an enlarged view of an embodiment for carrying out the present invention. It is a top view of an embodiment for carrying out the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited to the following embodiment.

FIG. 1 is a sectional view of the apparatus, and FIG. 2 is an enlarged view of a filter portion. The liquid containing foreign matter sent by the pump 1 flows through the valve 2 and into the tank 8. The tank is provided with several valves, in which case 2 and 4 are open. The inside is sealed, and the liquid containing the foreign substance passes through the gap 22 of the 11 washer in FIG.

In FIG. 2, uneven shot blasting is applied to the surface of 11 washer, and this washer 11 is stacked to form a filter. The washers 11 are used in layers, but these washers are tightened from above and below with nuts 9 and 10 via bolts 16 to eliminate looseness between the washers. Since the foreign matter 21 under pressure cannot pass through the gap 22, it is separated from the liquid on the surface of the washer 11.

In this case, desired particles can be supplemented by changing the height of the unevenness.
Although the size of the particle 21 is various, it can be adapted from about 0.1 microns to about 20 microns.

Clean liquid that is not a foreign substance passes through the gap 22 and passes through 19 small rooms. 19 is a small room that is long in the vertical direction. Fluid holes 17 and 18 are formed in the bolt 16, and the clean liquid that has flowed into the clean liquid storage chamber 19 flows out smoothly to the discharge port 15. The filtered clean liquid passes through the valve 4 and accumulates in the storage tank 6.

As seen from above, the filter tank 8 is mounted so that the suction port 14 is in contact with the filter tank 8 as shown in FIG. 3, so that the liquid applied with pressure strongly hits the inner wall of the filter tank 8 and is centrifuged. Since it rotates while being rubbed with force, a relatively large foreign matter is brought to the inner wall of the filtration device tank 8 and exhibits a cyclone effect and falls downward. As a result, the surface of the washer 11 is less likely to be clogged due to the rotating liquid. Further, the bottom of the filtration device tank 8 is tapered, and foreign matter that has fallen from the top hardly accumulates and flows out smoothly from the foreign matter outlet 24.

If filtration is continued for a certain period of time, foreign matters will adhere to the gaps of the washer 11 and the efficiency of the filter will deteriorate and the flow rate will decrease, so regular backwashing is performed.
As a method, the valve 2 and the valve 4 are closed by using a sequencer, the valves 5 and 3 are opened, and air or clean liquid is ejected from the backwash chamber 7 to the small chamber 19 from 18 to 17. Then, the foreign matter adhering to the surface of the washer 11 is blown off by the pressure from the inside and flows out toward the foreign matter outlet 24. Thus, the filter surface 11 is cleaned cleanly. As a result, foreign substances clogged on the surface can be removed, and the function can be maintained as a filter that can be reused as many times as new. Then, the valves 5 and 3 are closed, and the valves 2 and 4 are opened to repeat the operation.

As apparent from the above description, the present invention has the following effects.
(1) The liquid passing through the washer 11 with irregularities is selected because large particles cannot pass through the irregular surface. By stacking a large number of such washers 11, the function as a filter can be sufficiently exerted, and the target particles can be captured by changing the roughness of the irregularities without the openings that are common in general filters.
(2) Since the clogging of the particles adhering to the filter surface can be avoided by backwashing, the running cost can be very low because it can be used repeatedly and repeatedly.
(3) By reducing the plate thickness of the washer 11 and further laminating, it is possible to increase the surface area as a filter, and it can be made inexpensively as a filter that removes foreign matter in the micron range. In order to filter a large amount of liquid, the flow rate can be easily secured by using a plurality of modules. Moreover, the same effect can be produced by lengthening.
(4) Since the suction port 14 is attached so as to be in contact with the inside of the filtration device tank 8, when the liquid enters by applying pressure from the pump 1, the liquid is rubbed against the inner wall of the tank by centrifugal force at high speed. Rotating and large foreign matters fall down while gathering on the wall surface due to the cyclone effect, so the surface of the washer 11 is not easily clogged.

Industrial applicability

The present invention is used in industries that use water-soluble coolant regeneration, hydraulic fluid, lubricating oil regeneration, superfinishing oil regeneration, cleaning fluid regeneration, quenching water regeneration, silicon wafer cutting fluid regeneration, etc. .

1 pump 2 solenoid valve 3 solenoid valve 4 solenoid valve 5 solenoid valve 6 storage tank 7 backwash chamber 8 filtration device tank 9 tightening nut (upper) 10 tightening nut (lower)
11 Wash blasted washer 12 Clamp 13 Cover 14 Suction port 15 Discharge port 16 Washer tightening bolt 17 Clean liquid outlet 18 Clean liquid outlet 19 Clean liquid storage chamber 20 Partition plate 21 Foreign material 22 Gap 23 Washer pusher 24 Foreign material outlet

Claims (4)

A filtration device having a filter in which a plurality of washers having a hole in the center and irregularities formed on the surface by shot blasting are stacked inside the filtration device tank, and filtered from the outside of the filter A filtration apparatus, wherein a foreign substance is removed by passing a treatment liquid for treatment through a gap formed by communicating the irregularities. The filtration device according to claim 1, further comprising a backwash device connected to the filter and performing backwashing by flowing a fluid from the hole in a direction opposite to the passage direction of the treatment liquid. The washer is fixed by a bolt and a nut penetrating the hole portion, and a shaft hole of the bolt is provided with a through hole that guides the treated liquid after filtration to the outside. The filtration device according to claim 1 or 2. The filtration device according to any one of claims 1 to 3, wherein the filtration device tank is provided with a suction port for introducing a processing liquid on a side surface, and a bottom portion is formed in a tapered shape.

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