WO1998006474A1

WO1998006474A1 - Continuous filtration and separation apparatus

Info

Publication number: WO1998006474A1
Application number: PCT/JP1997/002712
Authority: WO
Inventors: Hiroshi Yokota; Shingo Yokota
Original assignee: Kabushiki Kaisha Yokota Seisakusho
Priority date: 1996-08-13
Filing date: 1997-08-04
Publication date: 1998-02-19
Also published as: AU3708897A; JP4003193B2

Abstract

A highly effective and economical filtration and separation apparatus which can discharge easily and continuously foreign matters with which the screen is clogged. This apparatus comprises a rotary shaft, rotated by a driving force, transversely fitted inside a container, a rotary screen comprising concentric screen discs fitted to the rotary shaft in layers at predetermined intervals, and first and second partition portions extending from the inner wall portion of the container toward the rotary screen. The end of the first partition wall portion is so formed as to be slidable with a small clearance from the rotary outer peripheral portion of the rotary screen, and the end of the second partition wall portion is so formed as to be slidable with a small clearance from the rotary outer peripheral portion of the rotary screen and at the same time has combtooth-like proteberances that can enter into the spaces between the screen discs with shape of the protuberances being such that the diameter thereof is reduced from the rotary outer peripheral portion of the rotary screen toward the center of rotation in such a manner as to be wound in the direction opposite to the rotating direction of the rotary screen and said protuberances are so formed to be slidable with a small clearance from the disc surfaces of said screen discs. Said apparatus further comprises, along the rotating direction of the rotary screen, a fluid inlet and a foreign-matters discharge outlet formed in a zone between said first partition portion and said second partition portion, and a fluid outlet formed in a zone between said second partition portion and said first partition portion.

Description

Fine communicating _t filtration separator art

The present invention relates to a filtration / separation device which is installed in a fluid intake or a conduit for transferring a fluid, and separates and removes dust and foreign matter contained in the fluid. The present invention relates to a filtration / separation device ^ which has a function of quickly and continuously removing the particles. In the present specification, the term “fluid I” shall generically represent liquid and air-holding. The term “foreign matter” shall refer to various kinds of dust and foreign matter to be separated, for example, when the fluid is liquid. When the fluid is a gas, various kinds of dust, granules, material fragments, etc. shall be generically represented. Background art

Conventionally, as a general filtration device, for example, there are a system in which a screen made of a wire mesh, a perforated plate, a slit plate, and the like is stretched, a cyclone system, a centrifugal separation system, and the like. There are sieving, wiping and backwashing methods to remove them, and it is well known that they have been widely used.

The biggest problem with the conventional filtration device is the method of discharging foreign matter deposited on the screen, that is, the method of dealing with clogging. As described above, various methods such as a sieving method, a wiping method, and a backwashing method are used. Proposals have been made, but in any case, foreign substances must be discharged and cleaned by closing the pipes before and after the apparatus, and even if it is possible to continuously discharge foreign substances, the discharge is not Because the method is a device that is larger than the original screen and the production cost is high. However, both methods are far from complete clogging countermeasures, and there were still various technical problems.

The present invention has a simple and rose-like structure that can drastically solve these unsolved technical problems, and is easy to design and manufacture. The objective is to obtain a high-performance, low-cost filtration / separation device that does not cause problems whether it is downsized or humanized. Invention opening / bottom

In order to achieve the above-mentioned S target, the continuous filtration / separation apparatus of the present invention comprises a rotating shaft which is mounted transversely on the vessel by a vessel and is rotated by a driving force;

A rotating screen composed of concentric screen disks mounted on the rotating shaft at predetermined intervals in a stacked state;

A second partition and a second partition extending from the inner wall of the container toward the rotating screen;

The tip of the first partition is formed so as to be slidable with a small gap with the outer peripheral portion of the rotating screen,

The tip of the second partition wall is formed so as to be slidable with a small gap from the rotating outer peripheral portion of the rotating screen, and from the rotating outer peripheral portion of the rotating screen toward the center of rotation. Comb-shaped projections are formed so as to enter the gap between the screen disks while reducing the diameter so as to be wound in the direction opposite to the turning direction. It is slidable with little gap with each plate surface,

And a foreign matter discharge port is formed along the rotation direction of the rotating screen in a region of the container from the first partition to the second partition, and a foreign substance discharge port is formed. A fluid outlet is formed in an area reaching the partition.

According to the present invention, the rotating shaft is driven by an external power device attached to the container. It may be configured to move.

The configuration may be such that the rotating shaft is driven by an internal power unit IS that converts a flow force flowing through the container into a rotational force.

In addition, a configuration may be adopted in which a foreign substance discharging device for sucking and discharging foreign substances from the foreign substance discharge port to the outside is provided.

义, ;; The fluid inlet, the foreign matter outlet, and the force may both be open to the fluid area on the inflow side.

Also, irregularities may be formed on the surface of the screen disk to facilitate the capture of foreign matter.

Further, a foreign matter moving device for forcibly moving foreign matters staying in the vicinity of the rotation outer peripheral portion of the screen may be additionally provided.

The operation of the continuous filtration / separation apparatus of the present invention is as follows.

Fluid flowing from the fluid inlet U to the fluid outlet of the device is blocked by the second partition wall and the second partition wall having the comb-like projections. Path, that is, the part of the gap between the rotating screens ([^ the gap between the laminated screen disks constituting the rotating screen) between the tip of the first partition wall and the center of the rotating screen. Becomes

At that time, foreign matter having a size that cannot pass through the lamination gap of the rotating screen is left behind on the outer periphery of the rotating screen, and is pressed against the fluid inlet side surface of the second partition when the rotating screen rotates. And is separated from the rotating screen and stays on the fluid inlet side of the second partition.

In addition, when the rotating screen rotates, the foreign matter that has a size substantially equal to the laminating gap of the rotating screen and is trapped cannot be swirled from the center of rotation to the outer periphery when the rotating screen rotates. Is guided to the outer peripheral portion while being pressed against the comb-shaped projections formed in the shape of a ridge, and is then pushed so as to be pressed against the fluid inlet side surface of the second partition, and then detaches from the rotating screen. Partition wall fluid population Stay on the side.

This 冋 ^ screen may be rotated M intermittently or Ία; continuously. As a result, foreign matter that has separated from the rotating screen and has entered the second runaway π side (or may be appropriately removed from the image non-display u).

In this way, the present invention has clearly and unduly solved the above-mentioned unsolved problems. BRIEF DESCRIPTION OF THE FIGURES

1 | | is the longitudinal section of the first embodiment of the present invention [ίυΊ (for | 2 | 1; XX cross-sectional view)].

FIG. 2 is a cross-sectional view of the first embodiment of the present invention.

■ FIG. 3 is a longitudinal sectional view (XX section of the fourth example) of the second embodiment of the present invention.

FIG. 4 is a cross-sectional view I (a sectional view of FIG. 3I) of the second embodiment of the present invention.

FIG. 5 is a longitudinal sectional view of a third embodiment of the present invention.

FIG. 6 is a side view of a third embodiment of the present invention.

FIG. 7 is a longitudinal sectional view of the fourth embodiment of the present invention.

FIG. 8 is a plan view of a fourth embodiment of the present invention! ¾. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, the present invention will be described in more detail with reference to the drawings showing examples. Note that the same reference numerals are given to common parts throughout the drawings.

FIG. 1 and FIG. 2 show a first embodiment of the present invention, which is an application example in which a fluid transfer is installed in a road. 1 is a container in which a rotating shaft 3 is mounted transversely. Mfc (clockwise in the figure | π) in the direction of the driving force of the external power unit IS: 4. A rotary screen 2 is formed on the rotating shaft 3 by mounting a core screen, plates 1, 2, 3... At predetermined intervals in a stack. (The number of this screen [re-plate Ρ 1; Ρ 2;…… is not limited to the number shown in FIG. 2 for convenience of explanation. c)

On the other hand, two fixed partitions, a first partition 5 and a second partition 6, extend from the inner part of the container 1 toward the recirculation screen 2. The distal end of the first partition wall 5 is formed so as to be able to disappear with a small gap between the opening I and the outer rotating part of the screen 2. Also, the tip of the second section 6 is formed so as to be able to i′ft with a small gap with the outer peripheral portion of the rotating screen 2 and the outer peripheral portion of the rotating screen 2 extends from the outer peripheral portion of the rotating screen 2 toward the center of rotation. ίΰ] Comb shaped so as to enter the gap between screen disks Ρ 1 Ρ 2 Ρ 3… that is reduced in diameter so that it is wound in the direction opposite to the direction of rotation of rolling screen 2. The toothed projections have Q 1, Q 2, Q 3,..., And are formed to be slidable with little space between the screen surfaces of the screen disk.

Then, in the rotation direction of the rotary screen 2, the fluid inlet 7 and gave evacuation b ^nine? Are successively formed in the area extending from the first partition wall 5 of the container 1 to笫Ni partition walls 6, from the second partition wall 6 A fluid outlet 8 is formed in an area reaching the first partition wall 5. When a fluid having this configuration is interposed in a pipe and a fluid flows, the fluid that is going to flow from the inlet channel a to the outlet channel c is the-partition wall 5 and the comb-like projection Q 1; Q 2; Q 3 …… because it is blocked by the second partition wall 6, the remaining flowable passage, that is, the lamination gap of the rotating screen 2 (the finely divided screens constituting the rotating screen 2) The gap between the discs P 1, P 2, and P 3) is the first distance! 5 The part between the tip and the center of rotation is turned in the direction of rotation of the rotating screen 2. Will pass through. This flowable passage is the filtration passage b. At that time, foreign matter of a size that cannot pass through the lamination gap of the rotating screen 2 When it is left behind on the outer periphery of the screen 2 and the M-rolling screen 2 turns to zero, it is pressed so as to be pressed against the 入 on the fluid input U side of the partition wall 6, and! Departs and stays on the U-side of the 6th-Jiangsu 6th fluid person, that is, the object retention: d.

Ai, [n | fc] An object that has a size almost equal to the gap of the screen 2 and is pinched because it cannot pass through the gap is the center of the l "i screen 2 Comb-like protrusions Q1; Q2; Q3, which are spirally formed from the part toward the outer periphery, are guided to the outer periphery while being pressed against them. It is gathered so as to be pressed against the ΐίΠ on the side, separated from the screen 2, and stays on the fluid entry I ”side of the first:: partition wall 6, that is, on the foreign matter accumulation chamber d.

The round screen 2 may be rotated intermittently or continuously rotated. As a result, the material that has detached from the fel transfer screen 2 and stayed in the foreign material storage chamber d may be removed by opening the foreign material discharge port 9 as appropriate.

In the apparatus of the present invention, the rotary subscription Ichin two months continuously [n ^|? A fc can structure, it becomes possible to filtration and foreign matter clogging elimination is repeated without question constantly device before and after conduit It has the remarkable feature that continuous operation can be performed without eliminating H clogging by closing. Further, as shown in the figure, the sliding area between the outer peripheral portion of the rotating screen 2 and the tip portions of the first partition 5 and the second partition 6 is smaller than the original h, and the comb-like projections Q 1; Q 2; The shape of the screen can also be formed so as to reduce the sliding area with the screens P 1, P 2, P 3..., So that even if a small foreign matter is buried in the gap between them, it can be easily separated. It can be rotated with less creaking and sharpness.

As for the driving method of the rotating shaft 3, FIG. 2 shows an example of a driving method using an external power unit 4 attached to the container 1, and the power source is an actuator, an engine, An appropriate power such as a motor may be used, and it operates sufficiently even when the rotation speed of the rotating shaft 3 is extremely low, so that a large reduction ratio can be obtained. The source may be small. In addition, the fact that the power source for this drive may be small means that it is possible to drive not only the external power but also the internal power that uses the power of the flow itself, as described later. An impeller or water:: may be provided in the pipeline to reduce the rolling force and use it as power, or external power and partial power may be used in combination. ] Since the rotating screen 2 does not need to be driven at all times, it is possible to even move the foreign matter when the stagnant scene of the foreign matter becomes predetermined.

Further, in the apparatus of the present invention, the number, thickness, straightness, and corresponding comb-like projections Q 1; Q 2; Q 3 of the screen disks P 1; P 2; P 3. Number,! ¥. And shape can be flexibly selected according to the specifications. For example, if both members are extremely thin and the number is small, a fine filtration / separation device for dust and granules can be obtained, and if the thickness is extremely large, a coarse y filtration / separation device for dust and lump material can be obtained. The screen disks P 1, P 2, P 3... May be simple disk-shaped flat plates as shown in the figure, but the surface of the screen disk (peripheral portion or plate surface) is provided with irregularities. It may be used as a slip stopper to promote the trapping of foreign matter, etc. Further, the unevenness is cut into a cut, and the tip of the second partition 6 or the comb-shaped projection Q 1; Q 2; Q 3 It is also possible to construct a foreign matter crushing mechanism (not shown).

The disc may be attached to the rotating shaft 3 by a fixed method, but it is possible to provide a stopper for transmitting the rotational force, and then stack the discs in a laminated manner and screw both ends with screws. Therefore, it is easy and convenient to disassemble and clean during maintenance and inspection.

FIG. 3 and FIG. 4 show a second embodiment of the present invention. In this embodiment, the power unit 4 for rotating the lfc screen 2 is changed from the external power system in the first embodiment to an internal power system using the power of the fluid flow itself. It is a thing. That is, an example was shown in which an impeller was provided in a pipeline, and its rotational force was reduced to provide a power unit.

について Regarding the method of discharging foreign matter, if this device is interposed in the suction line, Chi flow rest rather than being pushed from the fluid's门7 side, Nagarekyude II 8 side from i ^G::, pumps, etc. (gamma shift] is ¾ί shown) to the use of passing is sucked '"1 by In this case, it is complicated to close the pipe after the main unit i f'jij every time the foreign matter accumulated in the object accumulation d is discharged, avoiding the complicated work: As an example of a method of making foreign matter discharge during filtration operation, a foreign matter discharge! A foreign matter discharge device ^ 10 that attaches and discharges foreign substances from 9 is also provided. As the suction force of the foreign matter discharge device ^ 1 (), a suction source different from the above-described pressure reducing device or pump may be biased, or a branch line may be provided from the front device fl or the suction line of the pump. However, in the case of ^, in the latter case, the filter is filtered to the ft. 勿! 4 Of course, the foreign matter is discharged by the filtering device to avoid entering the flow path. Dress ^ 1 It is necessary to add after 0.

On the other hand, regarding this method of discharging foreign matter, if the device is inserted in the power pushing pipe, that is, if the fluid is pushed in from the fluid inlet 7 side and passes through, the foreign matter accumulation ⁷ When discharging foreign matter accumulated in the room d, regardless of the material discharge 10, if the foreign matter discharge 门 9 is appropriately performed even during the filtration operation of the main body, the material can be removed from the artificial flow path a ^: It will be discharged so as to be swept away by the fluid flowing by force. It is convenient for operation if an arbitrary type of opening / closing device or opening / closing valve is attached to the foreign matter discharge port 9. Further, the flow rate through and ^Eta:. For转path conditions such that force is sufficient, the the destination discharge of foreign matter and lift "I place than the device collecting the foreign matter after its equal to volume A regulating valve may be provided on the fluid population 7 side to adjust the momentum of the foreign matter discharge.The method of discharging the foreign matter after shutting off the front and rear of the main body ^ may be used. Of course ₍ .

Other configurations and operation modes are the same as those of the first embodiment.

Abbreviated.

FIG. 5 and FIG. 6 show a third embodiment of the present invention. In this embodiment, the fluid inlet 7 and the foreign matter outlet 9 of the first embodiment are used in combination. Both are open to the fluid area on the inflow side. For example, the example used as a suction pipe 1 at the tip of a suction pipe 11 immersed in is reduced.

In this case, as the | π! Rotating screen 2 consisting of the screen disk P rotates (clockwise in the figure, fc), foreign matter that cannot pass through the filtration channel b has a comb-like projection Q Since it is located in the flow area near the second bulkhead 6, the suction U can be used continuously without clogging. Then, in order to quickly remove the staying foreign matter and to make the subsequent suction operation more smooth, an object moving device 12 as shown in the figure may be provided. The foreign matter moving device 12 may be of various types such as a screw conveyor type, a zircling brush type, a stirring blade type, etc. in addition to the belt conveyor type shown in the figure. Can be moved, and the distance from the rotating screen 2 can be flexibly changed according to the thickness of the accumulated foreign matter. In order to drive the foreign matter moving device 12, a driving force source different from the driving force source of the rotating screen 2 may be provided, or the mechanism driven in conjunction with the π | Moore.

Other structures and operation modes are the same as those of the first embodiment, so the description is omitted.

FIG. 7 and FIG. 8 show a fourth embodiment of the present invention. This embodiment is obtained by adding running wheels 13 to that of the third embodiment, and is different from the third embodiment in that, for example, it is used as a suction port that crawls on the bottom of a tank flow passage to perform suction. .

In this case, as the rotary screen 2 rotates (in the figure, the clockwise rotation along with the traveling wheels 13 as the apparatus is moved rightward), foreign matter that cannot pass through the filtration channel b is removed by the second partition 6. Since it stays in the vicinity of the inflow area, the suction port can be used continuously without clogging. Although illustration is omitted, a foreign matter catching net or a bucket for storing the separated foreign matter may be carried on the back. In addition, The running wheel 1 3 is linked with the rotation axis 3 of the [π] screen 2 as shown in Fig. It may be driven in a manner that does not require driving, or may be a method in which it is possible to achieve a natural rolling without driving. The shape of the wheel 13 is also provided with a tire type and ridges, so that it can be set according to the local furniture.

Other configurations and operation modes are the same as those of the third embodiment, and thus detailed description is omitted.

In each of the embodiments, the screen disk forming the rotating screen 2 ；; Ρ1; Ρ2; Ρ3 ..., and the -m ^ 5 and comb facing the By minimizing the gap between the first-interval ^ 6 with the teeth Q, Q1, Q2, Q3, etc., the risk of foreign matter being caught is extremely small, but the number of times; In order to ensure a smoother 1π | rotation of 2, a foreign substance removing member may be mounted on a sliding portion of these members (not shown). The shape of the foreign substance removing member is as follows. Depending on the properties of the foreign material to be removed, various forms such as plate-like, claw-like, and brush-like are considered, and elastic material g may be applied.o The mounting place RJi is It may be on either side of the identification side, and plays a role of removing and cleaning foreign matter while being in contact with the member to be wrought. </ S> </ s> </ s>

Further, the filtration operation and foreign matter discharge process of the apparatus of the present invention can be further automated according to local needs. For example, for driving the rotary screen 2, continuous fel rotation is preferable to maintain high performance, but if it is desired to save the driving energy or there is little foreign matter. In the environment environment, it may be driven periodically by a timer. In addition, the rotating screen may be used to increase the flow resistance due to the accumulation of foreign matter near the screen 2. (2) A differential pressure detecting device that detects an increase in the differential pressure before and after, or a device that mechanically detects the accumulation of foreign matter is provided. Detailed explanations of 1M are omitted), based on detection signals from them. As a method to drive screen 2,

As for the timing of the material discharge in the example and the second embodiment, the material discharge Π 9 may be closed at any time, but it may be periodically opened by the evening image. Alternatively, it may be opened based on a detection signal from the detection device. In addition, the manual operation and the automatic operation can be similarly performed for the activation / deactivation of the material discharge / concealment 10 and the foreign substance moving device 12. Further, a sequence control function based on various detection signals may be added so that all of the operations described in (a) and (b) are operated.

As described in the above embodiments, the continuous filtration / separation apparatus according to the present invention has a one-time effect of the ffl effect, and further, according to the constituent elements of the present invention, Various designs can be changed within the scope of the present invention, such as changing the number of components, the positional relationship between the components, or using conventional technology. It is possible to appropriately select one that is suitable for local fixtures, and the present invention is not limited to the above embodiments.

In this description, there is no restriction on the size of the object to be filtered, as described above.

By properly selecting the thickness and gap of the screen disk of the rotating screen and the second comb-like projection facing the rotating disk, it is possible to change from coarse foreign substances in sewage to fine foreign substances in high-purity fluid, etc. It is applicable to a wide range of filtration work.义 It is obvious that the present invention can be applied not only to the so-called “filtration” work for eliminating foreign matter but also to the “separation” work for sorting objects according to their thickness. Furthermore, it is naturally possible to perform a more advanced multi-stage filtration / separation by combining a plurality of the present apparatuses having different sizes of foreign substances that can pass through. It is not limited. Industrial applicability

The present invention relates to a rotating screen formed by laminating screen disks as described below. 祯新しい Concise and simple, based on a new technical concept that allows the fluid to pass through the interstices and the foreign matter of a size that cannot pass through the interstices to the outer periphery of the screen. The structure drastically solves the technical problem of the conventional filter device i (the treatment of the ball in the i-type), \-production is easy, and the material that has been removed can be discharged easily and easily. It has a high performance and economical filtration / separation device which does not cause any problems even if it is humanized, and it can achieve a wide range of excellent results such as measurement, production and maintenance. The remarkable effect is extremely large compared to the conventional technology

Claims

The so-called range of demand

1. In the container,

A lulfe shaft mounted transversely to the vessel and driven by a driving force;

A rotating screen composed of concentric screen disks mounted on the rotating shaft at a predetermined interval in a stacked manner;

A first space and a second space extending from an inner part of the container toward the rotating screen;

The tip of the r-th partition wall is formed so as to have a small gap with the outer peripheral portion of the rotating screen of the rotating screen,

The first end of the partition wall is formed so as to be slidable with a small gap from the rotating outer peripheral portion of the screen; and from the rotating outer peripheral portion of the rotating screen toward the center of rotation, The comb screen has a comb-shaped protrusion which is reduced in diameter so as to be wound in a direction opposite to the 0Φ direction of the screen and enters a gap between the screen disks, and the comb-shaped protrusion is formed by the screen disk. It is formed so that it can slide with little gap with each plate surface of

A fluid inlet and a foreign substance outlet are formed in an area extending from the first partition to the second partition of the container along the rotation direction of the rotating screen, and the second partition is connected to the first partition. A continuous filtration / separation apparatus characterized in that a fluid outlet is formed in an area to reach.

2. The continuous filtration / separation device according to claim 1, wherein the rotary shaft is driven by an external power device attached to the container.

3. The continuous filtration / separation according to claim 1, wherein the rotating shaft is driven by an internal power unit that converts a force of a flow flowing through the container into a rotating force. apparatus.

4. Foreign matter discharge device that sucks and discharges foreign matter from the foreign matter discharge port to the outside. The rapid filtration separation apparatus according to any one of claims 1 to 3, further comprising:

5. The runaway person Γ 1 and the forehead discharge U are both released to the inflow side of the runoff area, and are placed in any one of claims 1 to 3. Continuous filtration and separation equipment.

6. The screen disk according to any one of claims 1 to 5, characterized in that a ^u [を] of the screen disk is formed with a lul which promotes the capture of foreign matter. Continuous filtration equipment.

7. The foreign substance moving device for forcibly moving foreign substances stagnating near the W portion outside the rotation of the screen. The continuous filtration / separation apparatus according to any one of the above,