KR20140011823A - Scraper unit of centrifugal separator - Google Patents

Scraper unit of centrifugal separator Download PDF

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Publication number
KR20140011823A
KR20140011823A KR1020120079127A KR20120079127A KR20140011823A KR 20140011823 A KR20140011823 A KR 20140011823A KR 1020120079127 A KR1020120079127 A KR 1020120079127A KR 20120079127 A KR20120079127 A KR 20120079127A KR 20140011823 A KR20140011823 A KR 20140011823A
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KR
South Korea
Prior art keywords
screw
core cylinder
centrifugal separator
scraper unit
sub
Prior art date
Application number
KR1020120079127A
Other languages
Korean (ko)
Inventor
이우홍
Original Assignee
주식회사 두리에프에스
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 두리에프에스 filed Critical 주식회사 두리에프에스
Priority to KR1020120079127A priority Critical patent/KR20140011823A/en
Publication of KR20140011823A publication Critical patent/KR20140011823A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B11/00—Feeding, charging, or discharging bowls
    • B04B11/08—Skimmers or scrapers for discharging ; Regulating thereof
    • B04B11/082—Skimmers for discharging liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B11/00—Feeding, charging, or discharging bowls
    • B04B11/08—Skimmers or scrapers for discharging ; Regulating thereof
    • B04B2011/086—Skimmers or scrapers for discharging ; Regulating thereof with a plurality of scraper blades

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  • Centrifugal Separators (AREA)

Abstract

The present invention relates to a scraper unit of a centrifugal separator. The scraper unit of the centrifugal separator comprises: a core cylinder (42) formed in a cylindrical shape; a shielding disk (43) which is arranged on the inner periphery of the core cylinder (42) in order to guide flow of wastewater; an inlet (44) which is formed in the inlet side of the core cylinder (42), and an inflow pipe is arrange which flows the wastewater in; an outlet (45) which is formed in the core cylinder (42) closer to the inlet (44) based on the shielding disk (43) and discharges the wastewater towards the outer periphery of the core cylinder (42); screws (46) in which spirals are formed on the outer periphery of the core cylinder (42) in a small taper form in which the diameter in the entrance side is big and the diameter in the end side is small; and brushes (48) which are formed on the outer periphery of the screws (46) and sweeps and transfers solid materials which are stuck to a wedge screen (32). The screws (46) comprises: main screws (461) formed in all sections on the outer periphery of the core cylinder (42); and sub screws (462) which are formed shorter than the main screws (461) on the outer periphery of the core cylinder (42).

Description

Scraper unit of centrifugal separator {scraper unit of Centrifugal Separator}

The present invention relates to a scraper unit of a centrifugal separator, and more particularly, to a scraper unit of a centrifugal separator for moving solids from the surface of the wedge screen in the centrifugal separator.

Wastewater is diverse, such as domestic sewage, agricultural and livestock sewage, and industrial wastewater. Such waste water causes environmental pollution and should be properly cleaned.

Waste water may be in the form of a mixture of liquid and solids, it is difficult to purify in the state that the solids are not separated / removed from the waste water is subjected to a process to filter the solids from the water.

A mechanical device is used to separate the solids and the liquid as described above. Such a device includes a "centrifugal separator" disclosed in Korean Patent Laid-Open No. 10-2010-0131889.

The above-described centrifugal separator will be briefly described with reference to FIGS. 1 and 2.

Both sides of the filtration cylinder unit 30 are supported by the first and second bearing parts 21 and 22 on the main frame 10, and the scraper unit 40 is rotatable inside the filtration cylinder unit 30. Is placed. The outer casing 60 is provided.

The first motor 51 is disposed on one side of the main frame 10 to rotate the above-described filtration cylinder unit 30, and the second motor 52 is disposed on the other side of the main frame 10, thereby providing the above-described scraper. Rotate the unit 40.

The rotational speed of the filtration cylinder unit 30 mentioned above and the rotational speed of the scraper unit 40 are rotated so that it may differ. That is, the rotation of the filtration cylinder unit 30 exerts a centrifugal force on the waste water so that the liquid is discharged through the wedge screen 32. The scraper unit 40 sweeps and moves when solids accumulate on the surface of the wedge screen 32.

That is, the liquid is discharged to the outside through the liquid discharge port 14, the solid is moved by the scraper unit 40 is discharged to the outside through the solid discharge port 16.

As described above, in the filtration cylinder unit 30, the wedge screen 32 is disposed in the form of a tapered tube, and water is discharged to the outside between minute gaps of the wedge screen 32.

The scraper unit 40 has a shielding disk 43 formed at an inner circumference of the cylindrical core cylinder 42, an inlet 44 is formed at the wastewater inlet side, and the inlet 44 based on the shielding disk 43. The outlet 45 is formed in the side.

The inlet 44 is arranged with an inlet pipe 12 for introducing waste water from the outside.

The screw 46 is arrange | positioned at the outer periphery of the core cylinder 42, and the brush 48 is arrange | positioned at the edge part of the screw 46. As shown in FIG.

The brush 48 described above is in close contact with the wedge screen 32 described above, and the solid content described above is changed by the relative rotational speed of the scraper unit 40 described above with respect to the filtration cylinder unit 30 described above. Swipe from the surface of the action to act.

Conventional centrifugal separators constructed and operated as described above have the following problems.

The overall shape of the filtration cylinder unit 30 and the scraper unit 40 is provided in the form of a tapered tube having a large diameter on the side where the waste water is introduced and a small diameter on the side where the solids are discharged.

As a result, when the centrifugal force is applied, the liquid is forced to be pushed away from the center. Due to the shape characteristic of the filtration cylinder unit 30, since the largest diameter is the side into which the waste water flows, the waste water is a specific side of the filtration cylinder unit. In particular, there is a problem of stagnation at the entry part.

On the other hand, the waste water contains a solid, such solids, as described above, if the stagnation at a specific position and delayed movement takes a long time to separate the liquid and solids, the efficiency of the centrifugal separator is deteriorated There is this.

Republic of Korea Patent Publication No. 10-2010-0131889 (2010.12.16.)

Therefore, the technical problem to be achieved by the present invention is to provide a scraper unit of the centrifugal separator to move the solid content more quickly in the centrifugal separator to further improve the water discharge performance and improve the efficiency of the centrifugal separator. have.

The present invention has been made in view of the above problems, and it is an object of the present invention to at least partially solve the problems in the conventional arts. There will be.

The scraper unit of the centrifugal separator according to the present invention for achieving the above technical problem is a core cylinder (42) formed in a cylindrical shape; A shielding disk 43 disposed at an inner circumference of the core cylinder 42 to guide the flow of waste water; An inlet 44 formed at an inlet side of the core cylinder 42 and having an inlet pipe 12 for introducing the waste water; An outlet (45) formed in the core cylinder (42) and formed near the inlet (44) based on the shielding disk (43) to discharge the waste water toward the outer periphery of the core cylinder (42); A screw 46 having a spiral in a tapered shape having a larger diameter at the initial side and a smaller diameter at the distal end of the core cylinder 42; And a brush 48 formed on the outer periphery of the screw 46 to sweep the solid material in close contact with the wedge screen 32, wherein the screw 46 includes an outer periphery of the core cylinder 42. The main screw 461 formed in the entire section in the; and the sub screw 462 formed shorter than the main screw 461 at the outer periphery of the core cylinder 42;

In addition, in the scraper unit of the centrifugal separator according to the present invention, the sub screw 462 may be formed in plural.

In addition, the length a of the sub screw 462 of the scraper unit of the centrifugal separator according to the present invention may be 25% to 50% of the length b of the main screw 461.

In addition, the scraper unit of the centrifugal separator according to the present invention, the length (a) of the sub screw 462 may be formed to a range including the outlet (45).

In addition, the scraper unit of the centrifugal separator according to the present invention may be different from the beginning of the main screw 461 and the starting portion of the sub-screw 462.

In addition, in the scraper unit of the centrifugal separator according to the present invention, the pitch P1 of the main screw 461 and the sub screw 462 may have different pitches P3.

The details of other embodiments are included in the detailed description and drawings.

The scraper unit of the centrifugal separator according to the present invention made as described above is able to prevent the wedge screen from being blocked by the solids by moving the solids quickly even when the waste water is stagnated at the entry side into which the waste water is introduced by the centrifugal force. It can be discharged quickly. Furthermore, the efficiency of the centrifugal separator can be further improved.

1 and 2 are views for explaining the centrifugal separator.
It is a figure for demonstrating the scraper unit of a comparative example.
4 is a view for explaining the scraper unit of the centrifugal separator according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish them, will become apparent by reference to the embodiments described in detail below with reference to the accompanying drawings.

Like reference numerals refer to like elements throughout the specification and like elements are denoted by the same reference numerals as in the prior art.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

Hereinafter, a scraper unit of a centrifugal separator according to an embodiment of the present invention will be described with reference to FIGS. 3 and 4.

FIG. 3 is a diagram for explaining a scraper unit of a comparative example. Accompanying drawings, Figure 4 is a view for explaining the scraper unit of the centrifugal separator according to an embodiment of the present invention.

Figure 3 is a view showing a conventional scraper unit is an example compared with the present invention.

As shown in FIG. 3, in the scraper unit 40 of the comparative example, the screw 46 is formed at the outer diameter of the core cylinder 42, and the brush 48 is formed at the outer peripheral end of the screw 46. A shielding disk 43 is formed on the inner circumference of the core cylinder 42, and an outlet 45 is formed on the inner side of the inlet 44 with respect to the shielding disk 43 in the core cylinder 42.

An inlet pipe 12 is disposed in the inlet 44 to introduce wastewater.

On the other hand, in the scraper unit 40 of the comparative example, the outer diameter drawn virtually when the above-mentioned screw 46 is rotated is formed in taper tube shape. The screw 46 is formed of an outer line, and in particular, the pitch is provided with the same pitches P1 and P2 at the beginning and the same pitch Pn at the ends.

On the other hand, the scraper unit 40 according to the present invention is a screw 46 is formed on the outer diameter of the core cylinder 42, the screw 46 is divided into a main screw 461 and the sub screw 462 is configured Can be. Brushes 48 are formed at the outer circumferential ends of the main screw 461 and the sub screw 462.

The main screw 461 described above extends from the beginning to the end to form a spiral in a continuous form.

The sub screw 462 described above is formed from the beginning to the middle, and may be shorter than the length of the main screw 461 described above. In addition, the sub screw 462 may be formed in plural. That is, in the scraper unit 40 according to the present invention, the screw 46 is formed in a multi-threaded spiral from the first entry to the mid-section, and is formed in the end of the scraper unit.

More specifically, the length (range: a) of the sub screw 462 may be 25% to 50% of the length from the beginning of the scraper unit 40 to the entire length b from the end.

As described above, the sub-screw 462 exhibits the effect of rapid transfer of the solid when it is 25% or more in the total length b. As described above, the sub screw 462 may shorten the length of the sub screw 462 if it is 50% or less of the total length b, thereby reducing the manufacturing cost of the scraper unit 40.

On the other hand, the length a of the sub screw 462 may be formed from the beginning of the scraper unit 40 to the range including the outlet 45 formed in the core cylinder 42. That is, when the waste water flows in between the filter cylinder unit 30 and the scraper unit 40 through the outlet 45, the waste water falls within the operating range of the sub screw 462. Thus, the waste water becomes more active in the separation of solids and liquids.

On the other hand, the portion where the above-described sub screw 462 starts may be different from the portion where the above-mentioned main screw 461 starts. In addition, when a plurality of sub screws 462 are provided, the starting part and the ending part of each sub screw 462 may be different from each other. This has flexibility in forming the spiral and increases the manufacturing convenience of the screw 46.

In addition, the pitch P3 of the sub screw 462 may be formed differently from the pitch P1 of the main screw 461. This allows the placement of the brush 48 to be formed at boiling intervals when looking at the particular cross section in which the sub screw 462 is formed, which is an operation in which the brush 48 is continuous to the solid when the solid is caught in the wedge screen 32. It can be applied to the action of hitting and this fine action can prevent the pinching of solids can be more effective in transporting solids.

The rapid transfer action effect of the above-mentioned solids can be achieved by dense pitch P of the screw 46. This will be explained as follows.

When rotating at the physical rotational speed (rpm) of the scraper unit 40, the main screw 461 and the sub-screw 462 rotate at the same rotational speed (rpm). Solids, on the other hand, adhere to the wedge screen 32 and are conveyed by the brush 48.

At this time, since the sub screw 462 is provided, the distance between the brush 48 of the sub screw 462 and another brush 48 adjacent thereto is close. In other words, the number of spirals of the screw in contact with the brush 48 in a particular cross section. For example, in the case of the main screw 461 and the sub screw 462, the two brushes 48 are in contact with the wedge screen 32 in the cross section of a specific section. For example, when the sub-screws 462 are provided in two rows, the three brushes 48 and the wedge screen 32 are in contact with each other in a specific section. That is, as the number of sub screws 462 increases, the number of brushes 48 that contact the wedge screen 32 in a specific cross section increases.

Thus, at a specific point of the wedge screen 32, as many brushes 48 as the number of spirals of the screw per unit revolution of the scraper unit 40 sweep the solids, thereby moving the solids more quickly. In other words, more frequently, the solid is swept away by the brush 48 before the solid is formed thick.

As described above, the liquid of the wastewater is discharged more quickly toward the outer circumference by centrifugal force through the wedge screen 32 by rapidly transferring the solids.

Therefore, the scraper unit 40 of the centrifugal separator according to the present invention made as described above can prevent the wedge screen from being clogged by the solids by moving the solids quickly even if the waste water is stagnated on the side where the waste water is introduced by the centrifugal force, thereby preventing the moisture. Can be discharged more quickly. Wastewater can be prevented from stagnating at certain intervals. Furthermore, the efficiency of the centrifugal separator can be further improved by allowing the liquid and solids to be separated more quickly.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. will be.

Therefore, it should be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, and the scope of the present invention is indicated by the appended claims. The scope of the claims and their equivalents It is to be understood that all changes or modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

The scraper unit of the centrifugal separator according to the present invention may be installed in the centrifugal separator and used to transfer the solids contained in the waste water.

10: main frame 12: inlet pipe
14: liquid outlet 16: solids outlet
21, 22: first and second bearing part
30: filtration cylinder unit 32: wedge screen
40: scraper unit 42: core cylinder
43: shielded disk
44: inlet 45: outlet
46: screw
461: main screw 462: sub screw
48: brush
51, 52: first and second motors 60: casing

Claims (6)

A core cylinder 42 formed in a cylindrical shape;
A shielding disk 43 disposed at an inner circumference of the core cylinder 42 to guide the flow of waste water;
An inlet 44 formed at an inlet side of the core cylinder 42 and having an inlet pipe 12 for introducing the waste water;
An outlet (45) formed in the core cylinder (42) and formed near the inlet (44) based on the shielding disk (43) to discharge the waste water toward the outer periphery of the core cylinder (42);
A screw 46 having a spiral in a tapered shape having a larger diameter at the initial side and a smaller diameter at the distal end of the core cylinder 42; And
The screw 46 is formed on the outer periphery, the brush 48 for sweeping the solid material in close contact with the wedge screen 32;
The screw 46 is,
A main screw 461 formed in the entire section at the outer circumference of the core cylinder 42; and
And a sub screw (462) formed shorter than the main screw (461) at the outer circumference of the core cylinder (42).
The method of claim 1,
The sub screw 462 is a scraper unit of the centrifugal separator, characterized in that formed in plurality.
The method of claim 1,
The length (a) of the sub-screw (462) is 25% to 50% of the length (b) of the main screw (461) scraper unit of the centrifugal separator.
The method of claim 1,
Length (a) of the sub-screw (462) is a scraper unit of the centrifugal separator, characterized in that formed to a range including the outlet (45).
The method of claim 1,
The scraper unit of the centrifugal separator, characterized in that the starting portion of the main screw (461) and the starting portion of the sub screw (462) is different.
The method of claim 1,
And a pitch (P3) of the main screw (461) and the pitch (P3) of the sub-screw (462) are different from each other.
KR1020120079127A 2012-07-20 2012-07-20 Scraper unit of centrifugal separator KR20140011823A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120079127A KR20140011823A (en) 2012-07-20 2012-07-20 Scraper unit of centrifugal separator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120079127A KR20140011823A (en) 2012-07-20 2012-07-20 Scraper unit of centrifugal separator

Publications (1)

Publication Number Publication Date
KR20140011823A true KR20140011823A (en) 2014-01-29

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KR1020120079127A KR20140011823A (en) 2012-07-20 2012-07-20 Scraper unit of centrifugal separator

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106694241A (en) * 2015-08-26 2017-05-24 苏州瑞威离心分离技术有限公司 Horizontal screw-discharge sedimentation centrifuge
CN110921876A (en) * 2019-12-17 2020-03-27 安徽牧洋油脂有限公司 Grease production sewage solid waste preprocessing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106694241A (en) * 2015-08-26 2017-05-24 苏州瑞威离心分离技术有限公司 Horizontal screw-discharge sedimentation centrifuge
CN110921876A (en) * 2019-12-17 2020-03-27 安徽牧洋油脂有限公司 Grease production sewage solid waste preprocessing device

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