JPS61200825A - Filter apparatus - Google Patents

Abstract

PURPOSE:To succeedingly perform smooth filtering action, by making it possible to relatively rotating a scraper mechanism capable of injecting fluid itself to be filtered and a filter having a cylindrical filter element in a housing. CONSTITUTION:At a desired time, a scraper mechanism 3 and a filter 2 are respectively indenpendently rotated automatically or manually and continuously or intermittingly or the above mentioned operations of both of them are combined. At the same time, a fluid to be filtered is continuously injected to the cylindrical filter element 2e of the filter 2 at a desired angle by the scraper mechanism 3 and the relative operation of the above mentioned rotatation and movement is performed together to carry out stirring and the filter cake stagnated o the filter element 2e is removed. As a result, smooth filtering action can be performed succeedingly.

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention provides a filtration method that prevents clogging of the surface of a filter element by using the stirring effect of a scraper mechanism, the jetting effect of the fluid to be filtered discharged from the scraper mechanism, and the effect of the agitation of the scraper mechanism. Regarding equipment.

[Conventional technology]

Generally, in a filtration device that separates impurities and obtains a pure liquid by passing a liquid containing impurities to be treated through a filter, a filter element type filter element that scrapes P slag on the surface is used as the filter. There are many things.

Conventionally, this type of device has only had a filtration device with a filtration element fixed inside the housing, and some have been equipped with a scraper, but since these devices simply stir, they have no effect on cleaning the filtration element. It is sufficient to remove coarse grains, but it is impossible to remove fine grains. Therefore, when using the device, the element is cleaned or replaced at an appropriate time.

[Problem that the invention seeks to solve]

However, in such devices, there is no way to completely clean the elements inside the housing, so filtration and performance deteriorate after a certain period of use. It is necessary to take it out and check the degree of dirt on the body part, and depending on the degree, decide when it is time to clean it. Also, - if the filtration particle size is large, there is no particular problem, but if the filtration particle size is small, the clogging becomes severe and even if the filtration surface is temporarily purified by backwashing etc., the clogging phenomenon immediately occurs and it is not practical. There was a problem that it could not be provided.

[Means for solving problems]

The present invention has been made by focusing on the above-mentioned problems, and includes a filter having a scraper mechanism that can inject the fluid to be filtered itself into the housing, and a cylindrical filter element that is prevented from clogging by the scraper mechanism. The purpose of the present invention is to solve this problem by providing a structure in which the two are relatively rotatable.

[For production]

Therefore, it is possible to rotate the scraper mechanism and the filter independently, automatically or manually, continuously or intermittently, at a desired time, or to combine the above-mentioned operations of both, and to remove the fluid to be filtered from the scraper mechanism. It is possible to continuously inject the liquid at a desired angle to the straight-shaped filtration element and stir it by cooperating with the relative movement of the rotation, thereby removing the p-slag remaining in the filtration element.

〔Example〕

First, the commonly used piping system of the present invention will be explained with reference to FIG. 6. The fluid to be filtered (hereinafter referred to as "undiluted solution") is fed to the filtration bag #R through the stock solution supply pipe G. , and reaches the scraper mechanism 3 via an injection liquid supply pipe FVi which branches off from the middle and a boost pump P. In addition, J is the approved fluid filtered by the filtration device R (hereinafter referred to as "pure liquid")
D is the pure liquid discharge pipe that sends the liquid in the required direction, and D is the drain discharge pipe. Note that the injection liquid supply pipe Fr may be led separately from the stock solution supply pipe G.

Hereinafter, a first embodiment of the present invention will be described based on FIGS. 1 and 2.

The filtration device A is a basic type, and its configuration will be described first.

A lid 1C equipped with an air vent 4 having a cock is attached to the top end of the cylindrical main body 1 through a gasket 1pt, while the bottom part is provided with an inner bottom plate 1b and an outer bottom plate 1S to prevent pure liquid. A pure liquid section 1J is formed. In addition,
A portion formed by the inner bottom plate 1b and the lid 1C is a stock solution section 1G that stores stock solution. Then, a drain pipe 1d connected to the drain discharge pipe and a pure liquid pipe 1j connected to the pure liquid discharge pipe J are connected to the main body 1H.
is attached to. ! 1g is 1fG of stock solution supply
This is a stock solution tube that is connected to the stock solution section 1G to supply the stock solution to the stock solution section 1G, and can be attached to either the upper or lower side of the main body 1H side of the stock solution section 1G.

Next, in the filter 2, a fixing bolt 2b is erected at the center of the inner bottom plate 1b via a substrate 2k, and the substrate 2kKOI
The filtration element (hereinafter referred to as
Abbreviated as "element". ) 2e is tightened with a nut 2n via the O-ring 2'' and the top plate 2C inserted into the fixed pole 2b. Outflow holes 2a, 1
a are bored in the base plate 2, facing the inner bottom plate 1b.

Next, in the scraper mechanism 3, a circular empty can-shaped flow dividing portion 3b is welded to the tip of a shaft pipe 3j that passes through the center of the lid 1C and serves as a rotating shaft and an inflow of stock solution. 3
The undiluted solution is applied to the surface of the element 2e from the same direction as shown in FIG. A plurality of vertically elongated hollow scrapers 3S each having a jet nozzle 3a for emitting jet jets are installed at regular intervals along the surface of the element 2e.

In addition, 3rr; t is a reinforcing ring that connects the outer periphery of the tip of the scraper 3S, and when the tip of the scraper 3S rotates while being held by a plurality of wheels 1t attached to required locations on the inner circumferential surface of the main body 1H. Prevent swinging 0 Note that the spout 3a#-1 and the scraper 3S may have vertical slits, intermittent slits, or a series of multiple holes, but the length may correspond to the entire length of the element 2e. It is sufficient if the undiluted Element 2e
The spray angle to the surface is also preferably in the tangential direction of the element 2e, but the angle is not limited.

Next, in order to prevent the stock solution in the stock solution section 1G from flowing out from the hole through which the shaft pipe 3j of the lid 1C passes, an oil seal 6 is inserted into the shaft pipe 3j and is crimped with bolts on the surface of the lid 1a. It is a presser foot.

Next, the effect will be described.

When the stock solution is supplied from the stock solution tube 1g to the stock solution section 1G, impurities are filtered out by the element 2e, and the pure liquid passes through the outflow holes 2a and 18'It from the inside of the p-filter 2, enters the pure liquid section 1J, and then enters the pure liquid section 1J. It is sent in a predetermined direction by the pipe 1j. At this time, #'i filter slag accumulates on the surface of the element 20 and gradually accumulates over time of use, resulting in clogging and deterioration of filtration performance. Therefore, when a high-pressure stock solution is fed from the shaft pipe 31 in parallel with the supply from the stock solution pipe 1g as an operation for cleaning the element 2e, each scraper 3
The stock solution sent to S is sprayed at high pressure and high speed from the spout 3a onto the surface of the element 28. Since the scraper 3Sfl moves forward in the direction of the arrow M based on the reaction of this injection effect, the scraper mechanism 3 rotates around the entire circumference of the purifier 2, so the injection effect from the scraper 3S and the stirring effect are combined. The residual F slag will peel off and fall off, eliminating the clogging and temporarily restoring the performance to its original good state.
Note that this element cleaning operation is performed continuously or intermittently at required times.

Note that when impurities in the stock solution section 1G remain and their concentration increases, the concentrated stock solution is discharged from the drain discharge pipe 1d.

Next, a second embodiment will be described based on FIG.

This filtration device B#'i is a rotatable version of the filtration a2 of the first embodiment. ] The filter 22 has a base plate 22 fitted in contact with the stepped portion 23d of the rotating shaft 23, and a top plate 22C fitted into the upper part of the shaft 2a in a non-rotatable manner with a key 23k.
The element 2e is held between rings 'lr and 'lr, and is tightened with a nut 22n.

The rotation l1ll123 is caused by screwing the nut 22n into the bearing 2 whose tip is attached to the center of the dot surface of the flow dividing section 3b.
4 and the outer bottom plate 1S of the stand 1
It is held by a bearing 25 attached to the center of the outer surface,
and a handle 26 and a pulley 2 that transmit external force.
A shaft rod 23J having a diameter of 7 is connected and fixed by a connecting shaft pipe 23p in which a plurality of pure liquid flow holes 23a are bored at required locations.

Note that oil is provided at the penetration portions of the rotating shaft 23 between the inner bottom plate 1b and the outer bottom plate 1S to prevent the undiluted liquid from flowing into the pure liquid part 1G from the undiluted liquid part 1G and to prevent the pure liquid from flowing out from the pure liquid part 1J. Seal 6 and presser foot 5 are the attachment.

Next, the effect will be described.

The undiluted liquid supplied to the undiluted liquid section 1G is filtered by the element 2e, enters the offshore filter 22, becomes pure liquid, enters the connecting shaft pipe 23p from the communication hole 23a of the rotating shaft 23, and enters the other communication hole 23a facing the pure liquid section 1J. The liquid flows out from the pipe and is guided to the pure liquid pipe 1j. On the other hand, the high-pressure stock solution sent from the shaft pipe 3j to the flavor mechanism 3 is injected onto the surface of the element 2e from the spout 3a of the scraper 3S. At this time, the scraper mechanism 3 rotates around the entire circumference of the filter 22 due to the reaction of this injection effect and exerts an agitating effect. Using this method, the filter 622 is rotated in the opposite direction to promote separation of the filter cake and further improve the filtration performance.

In this embodiment, the scraper mechanism 3 is illustrated as having a rotatable configuration, but the scraper mechanism 3 may be configured to be fixed so that the filter 22 can be rotated continuously or intermittently in forward and reverse directions.

Roughly, pulley 21 and handle 26Fi, shaft rod 23
j, but it goes without saying that both can be implemented as separate configurations.

Next, a third embodiment will be described based on FIG. 4.

This filtration device is provided with a planetary gear device 30 as a reversing means for reversing the filter 22 of the second embodiment in conjunction with the scraper mechanism 3. This planetary gear device 30 includes a sun gear 31 that is fitted onto a bolt 23b of a rotating shaft 23 and fixed to the top plate 2C, an internal gear 32 that is attached to the inner surface of a scraper 3S, and three planetary gears that mesh with both 31 and 32. 33, and the planetary gear 33 is pivotally supported by the top plate 22C and an arm plate 34 which is fastened and fixed to the top plate 22c together with the sun gear 31 by a nut 22n.

Since it is configured on paper, when the undiluted solution is ejected from the scraper 3S and the scraper 3S rotates due to the reaction,
The rotational force of the internal gear 320 that rotates in the same direction is the planetary gear 3
3 to the sun gear 31 to rotate the filter 22 in the opposite direction. Therefore, when the raw solution is injected from the scraper 3S, the filter automatically rotates in a desired direction without requiring any external force such as a motor.

Next, a fourth embodiment will be explained based on FIG.

The top plate 22C of the second embodiment of the p-filter RFiXg is modified so that the filter 42 is reversed.

This reversing means has two chits 42 on the entire outer periphery of the top plate 42c.
The spout 43a for injecting the stock solution to the ratchet 42r is replaced by the spout 3a for the element 2e.
In addition, a special scraper 43 is provided.

Therefore, the spout 43a rotates the ratchet 42r, that is, the filter 42, at the same time as the raw liquid is jetted from the scraper 43, and the same performance as the third embodiment is achieved with an extremely simple structure.

In addition, in the third and fourth embodiments, since no external force for rotation is required, the handle 26 and pulley 27 may be omitted depending on the situation.

In addition, in each of the above embodiments, the cross section of the casing and the filter were circular, but the cross section is not limited to a circle, and the shape may be a regular polygon or a combination thereof. Needless to say.

In general, the filtration element of the filter in each of the above embodiments can have a desired structure, such as a porous structure, a mesh structure, a coil-wound structure, a punched metal structure, or a fiber structure.

[Effects of the invention].

As explained above, according to the present invention, the filter dregs remaining on the surface of the filter element of the filter can be removed by the stirring action by the relative rotation of the filter element and the scraper mechanism, and by the injection of the stock solution from the scraper mechanism. Since the separation and removal is carried out by the action of the filtrate, it is possible to carry out exfoliation and removal very reliably and quickly.In particular, because the raw solution is stirred and flows inside the casing due to the synergistic effect of both, it becomes a surface filtration and even impurities with extremely small filtration particle size are not deposited. 〈〈〈〈〈〈〈〈〈〈〈〈〈〈〈〈〈〈〈〈〉〈〈〈〈〈〈〈〈〈〈〈〈〈〈〈〈〈〈〈〈〈〈〈〈〈〈〈〈〈)〈〈〈〈〈〈〈〈〈〈〈〈〈〈〈〈). In addition, the life of the filter element is extended, and contamination caused by impurities inside the housing is prevented by draining, and furthermore, it is significantly reduced by the flow phenomenon of the stock solution.

In general, the scraper mechanism and filter can be automatically rotated using the reaction force of the injection of the raw solution, so if necessary, the external forcing force such as a motor can be eliminated and the external mechanism can be simplified. There is also an advantage.

In particular, according to the present invention, the clogging phenomenon can be significantly reduced, so that the filtration of the fluid to be filtered, which conventionally required multi-stage filtration means such as three or four stages, can be achieved with a minimum number of filtration means. It has the effect of being able to be carried out efficiently in a short time and with reduced equipment costs.

[Brief explanation of drawings]

FIG. 1 is a vertical sectional view of the first embodiment of the present invention, and FIG.
1 is a sectional view taken along the line ■-■, FIG. 3 is a vertical sectional view of the second embodiment, and FIG. 4 is an explanation showing the main parts of the means for reversing the scraper mechanism and filter of the third embodiment. In the drawings, FIG. 1 is a longitudinal cross-sectional front view, FIG. , is a piping diagram to the present invention. 2.22.42...Filter 2e...
......Filtration element 3...
......Scraper mechanism 3s...
・・・・・・・・・−・Scraper 3a・・・・・・・
・・・・・・Spout port 30・・・・・・・・・・・・・・・
・Planetary gear unit 42r...Ratchet Figure 1, Section 2, Figure 4! Figure 5 Figure 6

Claims (6)

[Claims] (1) The filter slag accumulated in the cylindrical filter element provided on the outer periphery of the filter is removed by the stirring action of the scraper mechanism provided on the outside of the filter, and the scraper mechanism is applied to the surface of the filter element at a desired angle. A filtration device characterized in that the fluid to be filtered is removed under relative rotational movement between a filtration element and a scraper mechanism by a jetting action of the fluid to be filtered. (2) The scraper mechanism has a required number of hollow spouts that are arranged approximately vertically at desired intervals along the surface of the filtration element and are open toward the surface of the filtration element. The filtration device according to claim 1, characterized in that it is formed of a scraper. (3) The relative rotational movement is caused by the reaction force of ejecting the fluid to be filtered from the scraper mechanism, or by an external force,
The filtration device according to claim 1, characterized in that the filtration device is operated continuously or intermittently. (4) The filtration device according to claim 1 or 3, wherein the relative rotational movement is performed continuously or intermittently by external force. (5) The relative rotational movement is performed by driving the filter via a planetary gear device using a rotational force generated by the reaction force of the fluid to be filtered ejected from the scraper mechanism. The filtration device according to item 3. (6) The relative rotational movement is obtained by rotating the filter by injecting the fluid to be filtered from the scraper mechanism to the ratchet of the filter. The filtration device according to item 3.