KR101796454B1 - Separation filtrate cleanliness increase type centrifuge - Google Patents

Abstract

The present invention relates to a centrifuge with an increasing cleanliness of a separation filtrate. More specifically, the centrifuge comprises: an outer bowl which is an outer rotor; a screw which is an inner rotor; an operating motor operating the components; and an outer casing including a filtrate outlet and a dam plate with a plurality of filtrate drains installed at an end part to cover the outer bowl and the screw while separating and discharging a filtrate and a cake (sludge), and a sludge cake drain installed at the other end part with sludge cake outlets. As the area of friction or contact between a solid and the inner surface of the dam plate or some of the filtrate drains is increased, thus, solids, separated from the outer bowl, are mixed with the filtrate, so the filtrate flows down along an inner wall of the outer bowl or is filtered by itself without being discharged to the outside along the filtrate drains. As such, the present invention is capable of suppressing the generation of an eddy on the inner wall of the dam plate by smoothly discharging the filtrate through the filtrate drains of the dam plate, and effectively separating and discharging the filtrate from the solids, thereby significantly increasing the cleanliness of the filtrate as well as the efficiency, performance, and processing capacity of the centrifuge.

Description

{Separation filtrate cleanliness increase type centrifuge}

More particularly, the present invention relates to a centrifugal separator for separating solids and liquids or liquids having different specific gravities by using centrifugal force, or a centrifugal separator for separating a liquid having a different specific gravity from the inner surface of a dam plate, It is possible to improve the shape of the drain hole and to minimize the amount of residual floating matter mixed and discharged into the filtrate when the filtrate separated into solid and liquid is drained through a plurality of filtrate drains formed in the dam plate, To improve the cleanliness of the filtrate separated by the centrifugal separator, and to greatly increase the processing capacity, efficiency and performance of the resulting centrifugal separator.

Generally, one of the most difficult problems in the treatment of manure, livestock wastewater and high concentration organic wastewater is solid-liquid separation. Conventional solid-liquid separation is performed by screen separation such as drum screen and sieve screen, centrifugal separation using special sponge suction separation, A filter method, a vibration type solid-liquid separation device, a method of dewatering the entire liquid after the injection of the medicine, or a method of dewatering after the floating or sediment separation after the injection of the medicine.

However, such a conventional solid-liquid separation method has a problem that not only the efficiency of solid-liquid separation is low but also the phenomenon that the screen or the screen is clogged frequently due to abnormal clusters such as hair is frequently generated, .

In addition, there is a problem in that the method of dewatering after the injection of the medicines requires dehydration of the entire amount of the wastewater, so that it can not be practically applied due to the complexity of the process as well as the consumption of chemicals and excessive dehydrator capacity.

Accordingly, in order to solve the above-mentioned conventional problems, a solid-liquid separator or a centrifugal separator using centrifugal force has been proposed. This is because clogging does not occur because a screen or a network is not used, There is an advantage that dehydration of the entire wastewater or excessive dehydrator capacity and complexity of the process together with the consumption of chemicals are not required.

However, of the solid-liquid separator or the centrifugal separator described above, the solid-liquid separator used in the wastewater treatment facility has only a simple dewatering function, which causes a problem of uncertainty and efficiency of solid-liquid separation.

On the other hand, as shown in Figs. 1 and 2, the centrifugal separator for separating solid, liquid, or liquid having different specific gravity by centrifugal force comprises an outer tube 1 as an outer rotating body and a screw 2 And a plurality of filtrate draining ports 431 are provided at one end to separate and discharge the filtrate and the cake (sludge) while covering the outer barrel 1 and the screw 2, A dam plate 43 and a filtrate discharge port 41 and an outer casing 4 provided with a sludge cake outlet 42 at the other end where sludge cake discharge ports 11 are formed.

The sludge cake is discharged through the sludge cake discharging openings 11 compressed and delivered by the screw 2 into the other end portion of the outer tube bowl 1 on which the sludge cake outlet 42 is formed A back pressure plate 5 for increasing the pressure so as to smoothly move to the discharge port 42 side is provided. In addition, the one end opening of the outer barrel 1 is provided with a stopper function and a shaft And a support and cap 6 are provided.

The screw 2 which is the inner rotating body of the centrifugal separator having such a configuration is rotated at a high speed by the driving motor 3 while the outer tube 1 as the outer rotating body also rotates at high speed, The sedimentation velocity toward the narrow diameter side is faster than that under gravity by centrifugal force so that the light filtrate is discharged to the filtrate discharge port 41 side through the filtrate discharge ports 431 of the dam plate 43 provided at the end with a large diameter , The sludge cake having a heavy specific gravity is discharged to the side of the sludge cake outlet 42 through the sludge cake outlet 11 formed at the narrow end.

At this time, the sludge is introduced into the screw 2 as a lump in the form of a flock by the polymer flocculant when it is fed. This is because the weight of the sludge is centrifuged by inducing weight difference. The light filtrate and the heavy sludge cake It is separated by the principle.

However, the dam plate 43 provided at one end of the external bowl 1 of the centrifugal separator has a simple disc shape and a plurality of filtrate drains 431 are formed at a right angle to the dam plate 43 And has a perforated shape at intervals.

The dam plate 43 having a disk shape and the inner surface of the outer tube 1 have a rectangular cross-section, as well as between the dam plate 43 and the filtrate drains 431 punctured therewith Since the filtrate separated in the outer tube 1 and the remaining suspended solids and solids contained in the filtrate collide against the inner surface of the dam plate 43 having a vertical wall shape with respect to the filtrate flow direction, The centrifugal force generated between the dam plate 43 and the screw 2 and the turbulent flow due to the flow of the filtrate are generated at the mutually orthogonal angles between the dam plate 43 and the inner surface of the outer barrel 1, A vortex is generated in the vicinity of the filtrate drains 431 formed in the filtrate outlet 431.

In other words, the solids to be treated in the process can freely move as suspended matter in the filtrate. To separate the suspended matter from the filtrate by the centrifugal separator and discharge it to the sludge cake, these suspended matters and solids are freely moved in the filtrate It must be closely attached to the inner wall of the outer bowl to be conveyed by the conveyor screw.

In general, solid matter having a high specific gravity or smooth sediment is sedimented on the inner wall of the outer barrel while the filtrate is moved to the filtrate part, and the solids having low sedimentation property are freely moved without being precipitated as floating matters in the filtrate.

However, in the conventional centrifugal separator, a vortex phenomenon occurs in the vicinity of the filtrate drains 431 formed in the dam plate 43. Therefore, a part of the remaining suspended solids in the form of solid is mixed again in the filtrate, The solids discharged to the filtrate outlet 41 through the filtrate drains 431 formed in the filtrate outlet 43 are floated in the filtrate until they have a specific gravity lower than the specific gravity of the filtrate or move to the vicinity of the dam plate 43 There is a problem that the filtrate is discharged to the filtrate discharge port 41 through the filtrate discharge ports 431 formed in the dam plate 43, so that the cleanliness of the filtrate discharged after being centrifuged by the centrifuge is greatly reduced.

This reduction in cleanliness of the filtrate serves as a limiting factor in the processing capacity of the centrifugal separator, resulting in a problem of reducing the performance and efficiency of the machine.

Korean Registered Patent No. 10-1422567 (Jul. 17, 2014) Korean Registered Patent No. 10-1433308 (Aug. 13, 2014) Korean Registered Patent No. 10-1599328 (Feb. 25, 2016) Korean Registered Patent No. 10-1224309 (Jan. 14, 2013)

Disclosure of Invention Technical Problem [8] The present invention has been made in order to solve the above problems of the related art, and it is an object of the present invention to provide a centrifugal separator for separating solids, liquids or liquids having different specific gravity by centrifugal force, When the filtrate having been separated into a solid and a liquid is discharged through a plurality of filtrate drains formed in the dam plate, the remaining suspended matter is mixed and discharged in the filtrate The centrifugal separator is provided with a centrifugal separator capable of improving the cleanliness of the filtrate separated by the centrifugal separator and capable of greatly increasing the processing capacity, efficiency and performance of the resulting centrifugal separator. It has its purpose.

In other words, it is preferable to form or install a float discharge suppressing means such as an inclined surface on the entire inner surface of the dam plate where the filtrate separated from the solid is discharged, or a part of the filtrate discharge hole punctured in the dam plate so that the specific gravity is smaller than the filtrate, The sedimentation length and efficiency are increased so that the suspended solids can be centrifuged until the centrifugal force is drained, and the separated solids are caused to flow down to the inner wall along the suspended matter discharge suppressing means by the slip force due to the centrifugal force, So that the filtrate flows smoothly through the drain holes formed in the dam plate. Therefore, it is possible to suppress the occurrence of swirling phenomenon occurring on the inner wall side of the dam plate, Effective isolation from The present invention provides a centrifugal separator for separating filtrate, which is capable of greatly increasing the cleanliness of the filtrate and significantly increasing the processing capacity, efficiency and performance of the centrifuge by itself, There is purpose.

According to an aspect of the present invention, there is provided a method of controlling an internal combustion engine including an outer cylinder, an inner rotating body screw, a driving motor for driving the outer cylinder body, and an outer cylinder to cover the screw to separate and discharge the filtrate and the cake (sludge) A centrifugal separator including a dam plate provided with a plurality of filtrate drains and an outlet for the sludge cake, and an outer casing provided with a sludge cake outlet at the other end of the sludge cake outlet, So that the solids separated in the outer tube bowl are mixed into the filtrate and flowed down to the inner wall of the outer tube without being discharged to the outside along the filtrate outlet, Or the suspended matter discharge suppressing means is further formed or installed And a gong.

According to a first embodiment of the float discharge suppressing means, an inclined drain port formed at an intermediate portion of the inner surface of the filtrate drains formed in the dam plate so as to be inclined toward the inner surface and the outer peripheral surface of the dam plate.

The second embodiment of the float discharge suppression means is characterized in that the funnel-shaped slope is integrally formed by inclining the entire inner surface between the outer end of the filtrate drains formed in the dam plate and the outer circumferential surface of the dam plate .

In the third embodiment of the suspended particulate emission suppressing means, the entire inner surface between the outer end of the filtrate drains formed in the dam plate and the outer peripheral surface of the dam plate is inclined, and a plurality of steps, And a plurality of slanting engagement surfaces integrally formed with the plurality of slanting engagement surfaces.

In the fourth embodiment of the suspended-matter discharge suppressing means, the filter is disposed integrally with or formed on the inner surface of the dam plate so as to be integrally formed with the gap between the outer surface of the filtrate draining holes formed in the dam plate and the outer peripheral surface of the dam plate, And a plurality of suspended solids discharge blocking plates.

At this time, the float discharge blocking plates are formed so as to have different diameters, and are formed so as to have gradually larger diameters at the same rate as going outward from the center portion of the dam plate.

As described above, according to the separation filtrate cleanliness increasing centrifugal separator of the present invention, the inner surface of the dam plate of the centrifugal separator which separates the solid, the liquid, or the liquid having different specific gravity by centrifugal force, When the filtrate, which has been separated into solid and liquid, is discharged through a plurality of filtrate drains formed in the dam plate, the remaining suspended matter is mixed in the filtrate and discharged The cleanliness of the filtrate separated by the centrifugal separator can be increased and the processing capacity, efficiency and performance of the resulting centrifugal separator can be greatly increased.

In other words, according to the present invention, it is preferable that a floating substance discharge suppressing means such as an inclined surface is formed or installed on the entire inner surface of the dam plate of the centrifugal separator in which the filtrate separated from the solid is drained or a part of the filtrate discharge hole drilled in the dam plate, The sedimentation length and efficiency are increased so as to receive the centrifugal force just before the floating matters are drained, and at the same time, the separated solids are caused to flow downward to the inner wall along the float discharge suppressing means by the slip force due to the centrifugal force Or float discharge suppressing means to be effectively guided to the inner wall of the outer barrel so that the filtrate can be smoothly flowed out through the filtrate drains perforated in the dam plate, thereby suppressing the occurrence of the eddy phenomenon occurring on the inner wall side of the dam plate And the filtrate is solid The cleanliness of the filtrate can be greatly increased, and the processing capacity, efficiency and performance of the centrifugal separator itself can be greatly increased due to an increase in the cleanliness of the filtrate.

1 is a front sectional view of a conventional centrifugal separator.
Fig. 2 is an enlarged sectional view of a portion where the dam plate is installed in Fig. 1; Fig.
3 is a front sectional view of a centrifugal separator to which the first embodiment of the present invention is applied.
4 (a) and 4 (b) are a rear perspective view and a cross-sectional view of a dam plate according to a first temporary example of the present invention;
5 (a) and 5 (b) are a rear perspective view and a cross-sectional view of a dam plate according to a second temporary example of the present invention;
6 (a) to 6 (c) are sectional views of a dam plate for explaining a third embodiment of the present invention.
7 (a) and 7 (b) are sectional views of a dam plate for explaining a fourth embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention and their operation and effect will be described in detail with reference to the accompanying drawings.

It is to be understood that the terminology or words used herein are not to be construed in an ordinary sense or a dictionary, and that the inventor can properly define the concept of a term to describe its invention in the best possible way It will be understood by those of ordinary skill in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the present invention as defined by the following claims.

FIG. 3 is a front sectional view of a centrifugal separator to which the first embodiment of the present invention is applied, and FIGS. 4A and 4B are a rear perspective view and a cross-sectional view of a dam plate according to a first temporary example of the present invention .

5 (a) and 5 (b) show a rear perspective view and a cross-sectional view of a dam plate according to a second temporal example of the present invention, and Figs. 6 (a) FIG. 7A and FIG. 7B are cross-sectional views of a dam plate for explaining a fourth embodiment of the present invention. FIG.

According to the present invention,

A driving motor 3 for driving the outer barrel 1 and the inner rotor 2; a screw 2 covering the outer barrel 1 and the screw 2; A dam plate 43 having a plurality of filtrate draining ports 431 and a filtrate discharging port 41 are provided at one end and a sludge cake outlet 42 is provided at the other end where sludge cake discharging ports 11 are formed, And an outer casing (4)

It is possible to increase the friction or contact area with the solids on the inner surface of the dam plate 43 or a part of the filtrate outlet 431 formed in the dam plate 43 to separate the solids separated in the outer tube bowl 1 into the filtrate (44) for discharging the water to the inner wall side of the outer tube (1) without being discharged outside along the filtrate drain port (431) or hanging itself.

At this time, in the first embodiment of the suspended particulate emission suppressing means 44,

And an inclined drain hole 441 inclined toward the inner surface and the outer peripheral surface of the dam plate 43 in the middle of the inner surface of the filtrate drains 431 formed in the dam plate 43.

In the second embodiment of the suspended matter discharge suppressing means 44,

And a funnel-shaped inclined surface 442 formed integrally with the outer peripheral surface of the dam plate 43 at an outer end of the filtrate drains 431 formed in the dam plate 43 so as to be inclined with respect to the entire inner surface.

Further, in the third embodiment of the suspended-matter discharge suppressing means 44,

The entire inner surface between the outer end of the filtrate outlet 431 formed in the dam plate 43 and the outer circumferential surface of the dam plate 43 is inclined and a plurality of floats having a plurality of steps, And a multi-step inclined portion 443 integrally provided with the engagement surface 443-1.

In the fourth embodiment of the suspended-matter discharge suppressing means 44,

The dam plate 43 has a plurality of filtration openings 43a formed integrally or detachably at predetermined intervals in a direction perpendicular to the inner surface of the dam plate 43 between the outer side of the filtrate drains 431 formed in the dam plate 43 and the outer peripheral surface of the dam plate 43 And a float discharge blocking plate (434).

At this time, the float discharge blocking plates 434 are formed to have different diameters, and are formed so as to have gradually larger diameters from the center of the dam plate 43 toward the outside.

Here, reference numeral 5 denotes a back pressure plate, and reference numeral 6 denotes a shaft support and stopper.

The operation and effect of the separation filtrate cleanliness enhancing centrifuge constructed as described above according to the present invention will be described with reference to FIGS. 3 to 7 (a) and 7 (b).

First of all, the present invention is characterized in that the suspended solids discharge suppressing means 44 is provided on the inner surface of the dam plate 43 provided in the outer cylinder bowl 1 of a known centrifugal separator or on a part of the filtrate discharge port 431 formed in the dam plate 43, The solids separated in the outer bowl 1 are mixed with the filtrate and discharged to the outside along the filtrate outlet 431 through a method of increasing the friction or contact area with the solids So that it is suppressed as much as possible and flows down to the inner wall side of the outer barrel (1) or is caught by itself.

The known centrifugal separator includes an outer tube 1 as an outer rotor, a screw 2 as an inner rotor, a drive motor 3 for driving the outer tube 1, an outer tube 1, A dam plate 43 having a plurality of filtrate drains 431 and a filtrate outlet 41 are provided at one end to cover the screw 2 and separate the filtrate and the cake (sludge). The sludge cake outlet 11 are formed at the other end thereof with an outer casing 4 provided with a sludge cake outlet 42.

In this known centrifugal separator according to the present invention, in order to increase the friction or contact area with the solids on the inner surface of the dam plate 43 or a part of the filtrate outlet 431 formed in the dam plate 43, The means 44 may be further formed or installed, but various forms of such a suspended-particle discharge suppressing means 44 may be provided.

3 and 4 (a) and 4 (b) are cross-sectional views of the centrifugal separator according to the first embodiment of the present invention, And a rear perspective view and a cross-sectional view of the plate 43.

According to this, in the first embodiment of the present invention, the float discharge suppressing means (44) is provided at the middle portion of the inner surface of the filtrate discharge ports (431) formed in the dam plate (43) toward the inner surface and the outer peripheral surface of the dam plate And has an inclined drain hole 441 integrally formed thereon.

The slurry drainage restricting means 44 is integrally formed at an intermediate portion of the inner surface of the filtrate drains 431 formed in the dam plate 43 so as to incline the slope drainage holes 441 inclinedly toward the inner surface and the outer peripheral surface of the dam plate 43 The inclined drain 441 which is finally inclined before the filtrate is discharged through the filtrate drains 431 formed in the dam plate 43 forms a sloped surface between the inner wall and the inner wall of the outer bowl 1 Simultaneously with zooming, the solids and suspended solids narrow the distance of the adhered portion from which the solids should settle from the water surface layer.

Accordingly, the solids discharged through the filtrate drains 431 formed in the dam plate 43 can be finally settled through the inclined drains 441 integrally formed in the filtrate drains 431, It is possible to minimize the amount of solid matter discharged through the filtrate drains 431 formed in the filtrate tank 43, thereby greatly increasing the recovery rate of the solid matter.

5 (a) and 5 (b) show a rear perspective view and a cross-sectional view of a dam plate according to a second embodiment of the present invention. In the second embodiment of the present invention, Shaped funnel slope 442 formed integrally with the outer periphery of the dam plate 43 at the outer end of the filtrate drains 431 formed in the dam plate 43. [

Thus, the float discharge suppressing means 44 is provided with a funnel-shaped inclined surface 442 inclined over the entire inner surface between the outer circumferential surfaces of the dam plates 43 at the outer ends of the filtrate drains 431 formed in the dam plate 43 Since the suspended solids having a specific gravity smaller than that of the filtrate can not receive centrifugal force until they are drained through the filtrate drains 431 of the dam plate 43, The efficiency can be increased.

At the same time, the separated solids flow down to the inner wall of the outer barrel 1 along the funnel-shaped inclined surface 442 with a sliding force due to the centrifugal force, or are effectively guided to the inner wall of the outer barrel by being caught by the funnel- It is possible to minimize the amount of solids discharged through the filtrate drains 431 formed in the dam plate 43, thereby greatly increasing the recovery rate of the solids.

6 (a) to 6 (c) are cross-sectional views of a dam plate for explaining a third embodiment of the present invention. In the third embodiment of the present invention, The entire inner surface between the outer end of the filtrate drains 431 formed in the dam plate 43 and the outer circumferential surface of the dam plate 43 is inclined and a plurality of suspended solids 443-1 A stepped portion or a multi-stepped inclined portion 443 having either a saw tooth or a triangular shape is integrally provided.

The float discharge restraining means 44 slopes the entire inner surface between the outer circumferential surfaces of the dam plates 43 at the outer end of the filtrate drains 431 of the dam plate 43, A plurality of floatation retaining surfaces 443-1 having any one of the triangular shapes are formed integrally with the dam plate 443. If the floating masses are smaller than the filtrate, Since the centrifugal force can be received until just before being drained through the filtrate drains 431 of the filtrate outlet 43 of the filtration tank 43, a plurality of float retaining surfaces 443-1 having any one of a plurality of steps, So that the sedimentation length and efficiency of the floats can be further increased.

At the same time, the separated solids are caught by the floating suspending surfaces 443-1 of the multi-tilted portion 443 with a sliding force due to the centrifugal force, and then the floating barrel 1 is lifted along the floating suspension surfaces 443-1. The amount of the solid discharged through the filtrate drains 431 formed in the dam plate 43 is minimized by the multistage slope parts 443, Thereby greatly increasing the recovery rate of the solids.

7 (a) and 7 (b) are cross-sectional views of a dam plate for explaining a fourth embodiment of the present invention. In the third embodiment of the present invention, A plurality of float discharge blocking plates 434 are arranged at predetermined intervals in the direction perpendicular to the inner surface of the dam plate 43 between the outer side of the filtrate drains 431 formed in the dam plate 43 and the outer peripheral surface of the dam plate 43 And is integrally formed or detachably installed.

At this time, the suspended solids discharge blocking plates 434 are formed to have different diameters, and are formed so as to have gradually larger diameters at the same rate as going outward from the central portion of the dam plate 43.

As described above, the suspended matters discharge blocking plate 434, which is gradually larger in diameter from the center of the dam plate 43 toward the outer side, If the damper plate 43 is integrally formed or detachably installed at a predetermined interval in the direction perpendicular to the inner surface of the dam plate 43 between the outer side of the filtrate drains 431 and the outer peripheral surface of the dam plate 43, The suspended solids can be subjected to centrifugal force until they are drained through the filtrate drains 431 of the dam plate 43. Therefore, the suspended solids can be separated into the respective spaces formed between the suspended solids discharge blocking plates 434 having different diameters So that it has a form to be settled.

At the same time, the separated solids flow into the space formed between the float discharge blocking plates 434 by the sliding force due to the centrifugal force, and then the suspended floats are moved along the float discharge blocking plates 434 toward the inner wall side of the outer container 1 The float discharge blocking plates 434 minimize the amount of solids discharged through the filtrate drains 431 formed in the dam plate 43 as a result of being effectively guided and collected on the inner wall of the outer bowl, The recovery rate can be greatly increased.

As described above, in the present invention, by forming or installing the float discharge suppressing means 44 such as forming an inclined surface on the inner surface of the dam plate 43 of the centrifugal separator or a part of the filtrate drainage hole 431 formed in the dam plate 43 Since the filtrate flows smoothly through the filtrate drains 431 formed in the dam plate 43, it is possible to suppress the occurrence of swirling phenomenon occurring on the inner wall side of the dam plate 43, It is possible to minimize the discharge.

Accordingly, since the filtrate can be effectively separated and discharged from the solids, the cleanliness of the filtrate can be greatly increased, and the treatment capacity, efficiency and performance of the centrifuge itself can be greatly increased due to an increase in the cleanliness of the filtrate.

Although the preferred embodiments of the present invention have been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. Which will be apparent to those skilled in the art.

1: outer tube 11: sludge cake outlet
2: Screw
3: Driving motor
4: External casing
41: filtrate outlet 42: sludge cake outlet
43: Dam plate 431: Filtrate outlet
44: Float suppression means
441: slope drain 442: funnel slope
443: Multi-step inclined portion 443-1: Suspension surface
444: Float discharge plate
5: back pressure plate
6: Shaft support and stopper

Claims (6)

A plurality of filtrate draining holes are provided at one end for separating and discharging the filtrate and the cake (sludge) covering the outer tube and the screw, a drive motor for driving them, A centrifugal separator comprising a dam plate and a filtrate discharge port, and an outer casing provided with a sludge cake outlet at the other end where sludge cake discharging ports are formed,
The friction or contact area between the inner surface of the dam plate and the portion of the filtrate outlet formed in the dam plate is increased so that the solids separated in the outer tube bowl are mixed into the filtrate and discharged to the outside along the filtrate outlet, Further comprising a suspending and discharging restraining means for allowing the suspending member to flow down to the inner wall side or to be caught by itself,
Wherein the float discharge suppressing means comprises:
And a funnel-shaped inclined surface formed integrally with the inner surface of the dam plate at an outer end of the dam plate to define a funnel-shaped inclined surface.
delete delete delete A plurality of filtrate draining holes are provided at one end for separating and discharging the filtrate and the cake (sludge) covering the outer tube and the screw, a drive motor for driving them, A centrifugal separator comprising a dam plate and a filtrate discharge port, and an outer casing provided with a sludge cake outlet at the other end where sludge cake discharging ports are formed,
The friction or contact area between the inner surface of the dam plate and the portion of the filtrate outlet formed in the dam plate is increased so that the solids separated in the outer tube bowl are mixed into the filtrate and discharged to the outside along the filtrate outlet, Further comprising means for forming or installing suspended matter discharge suppressing means for allowing the suspended matter to flow down to the inner wall side or to be caught by itself,
Wherein the float discharge suppressing means comprises:
And a plurality of float discharge blocking plates integrally formed or detachably provided at a predetermined interval in a direction perpendicular to the inner surface of the dam plate between the outer side of the filtrate drains formed in the dam plate and the outer peripheral surface of the dam plate. The filtrate cleanliness increasing type centrifuge.
The method of claim 5,
The float discharge shutoff plates
The centrifugal separator according to any one of claims 1 to 5, wherein the centrifugal separator is formed so as to have different diameters such that the diameter of the centrifugal separator gradually increases toward the outer side from the center of the dam plate.

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