KR101135442B1 - Centrifugal and manufacturing method for its screw conveyor - Google Patents

Abstract

PURPOSE: A centrifugal having a structure-improved screw conveyor, and a manufacturing method of a screw conveyor are provided to facilitate the production thereof. CONSTITUTION: A centrifugal having a structure-improved screw conveyor comprises: a driving means(100); an external drum(200) and a internal drum(300) rotated by receiving driving power from the driving means; and a screw conveyor(400) installed on outer circumference to be arranged between the internal drum and the external drum. In the internal drum, a plurality of uneven mounting parts(340) screw-arranged with constant gaps on circumference side. The screw conveyor comprises: mounting parts(411) corresponding with the uneven mounting parts; medium bodies(412) connected to the same; uneven insertion part(413) on circumference separated from the outer circumference of the internal drum, connected to the medium bodies; a plurality of medium members(410) fix-installed to each mounting parts, and spiral wing part(420) consisting of two or more segments, forming a space part separated from the internal drum by being insert-fixed to each medium members with the shape connecting the medium members.

Description

Centrifugal separator with structure improved screw conveyor and method for manufacturing screw conveyor thereof {Centrifugal and Manufacturing Method for Its Screw Conveyor}

The present invention relates to a centrifugal separator having a structure-improved screw conveyor, and more particularly, is provided with a space spaced from the inner drum by a relay member, and is separated from sludge by having a spiral wing formed of two or more powders. The present invention relates to a centrifuge having a structure-improved screw conveyor and a screw conveyor manufacturing method thereof, in which a liquid can be smoothly flowed and made easy.

The technology of the centrifuge that allows the separated liquid separated from the sludge to flow smoothly

Republic of Korea Utility Model Registration No. 20-0384169 (2005. 05. 03. registration, hereinafter referred to as 'prior art') `` decanter centrifuge with drain screw '' is proposed,

The prior art,

"When the sludge is introduced, both sides are supported by the bearing to rotate the centrifugal force to separate the solids and the supernatant, the outer case for discharging the separated solids and the supernatant to the outside;

A screw conveyor including a pipeline for providing the sludge to the inside of the outer case, and including a spiral spaced apart from the shaft so as to separate the discharge path of the solid matter and the supernatant separated from the sludge;

Drive means for providing power to rotate the outer case so that the sludge is separated into the supernatant and the solid by the centrifugal force in the outer case; And

Vehicle speed means provided in the screw conveyor so that the screw conveyor is rotated in the inside of the outer case rotated by the driving means.

It consists of,

"In response to the sludge treatment properties, by applying the maximum centrifugal force to the outer cylinder bowl with an appropriate outer cylinder volume and a low rotational speed, and fixing the spiral to the shaft portion of the screw conveyor to separate the discharge path for the solid and supernatant, Sedimentation rate is increased and consolidation pressure and vortex caused by spiral are minimized so that the supernatant can be discharged to the outlet. "

It's a technology that lets you do that.

The prior art is installed so that the spiral of the screw conveyor is spaced apart from the shaft by a support coupled to the shaft to allow the supernatant separated from the sludge to flow smoothly through a passage formed between the spiral and the shaft. ,

Since a separate fixing means for coupling the support and the spiral is not provided, the central axis of the shaft portion and the central axis of the spiral are arranged to be offset from each other, and the central axes of each of the spirals are also offset to each other. There is a problem that the noise and vibration of the centrifuge increases and the efficiency decreases.

In addition, since the coupling means of the shaft portion and the support and the coupling means of the support and the spiral are not disclosed, a separate technique for this is required.

In order to solve the above problems, a centrifugal separator having a structure improved screw conveyor according to the present invention,

Drive means;

An external drum and an inner drum thereof which are rotated by receiving power from the driving means; And

A screw conveyor installed on an outer circumferential surface of the inner drum to be disposed between the outer and inner drums;

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The inner drum is formed with a plurality of concave mounting portion which is arranged spirally at a predetermined interval on the outer peripheral surface,

The screw conveyor is

A corresponding mounting portion with the mounting portion, a relay body connected thereto, and a connection portion connected to the mounting portion and positioned on a circumference spaced apart from the outer circumferential surface of the inner drum and having a fitting portion having a yaw shape in cross section, and fixed to each mounting portion. Multiple relay members, and

Spiral wing portion made of two or more powders are inserted and fixed to the fitting portion of each relay member in the form of connecting the respective relay members to form a space spaced from the inner drum,

Characterized in that it comprises a.

Here, the wing portion is characterized in that the two ends (端 部) in contact with each other in the adjacent powder is located in the fitting portion of the relay member.

In addition, the relay body of each of the relay member is characterized in that the flat cross-section is circular or streamlined.

On the other hand, the screw conveyor manufacturing method of the centrifuge according to the present invention in order to solve the same problem,

Forming a plurality of concave mounting portions spirally arranged at regular intervals on a cylindrical outer circumferential surface thereof;

Fixing the corresponding mounting portion to the mounting portion in a plurality of relay members having a corresponding mounting portion with the mounting portion, a relay body connected thereto, and a yaw-shaped fitting portion connected thereto;

Cutting a portion of each powder in at least two annular powders to form a 'C' shape;

Forming a helical spiral of one end and the other end of the cutout side in opposite directions in the powder; And

Forming spiral portions by inserting and fixing the helical powders into the fitting portions of the respective relay members;

And a control unit.

Centrifuge having a built-in reduction unit according to the invention and a screw conveyor manufacturing method thereof,

The wing portion is installed with the inner drum and the spaced apart space portion by the relay member, by forming a fitting groove for the wing portion in the relay member can not only smoothly flow the separation liquid separated from the sludge, but also by the fitting groove There is an effect that can be easily and accurately fixed to the wing portion outside the inner drum.

In addition, the wing portion is made of two or more powders, the two ends which are in contact with each other in the adjacent two powders are located in the fitting portion of the relay member, there is an effect that the manufacturing of the wing portion is easy.

1 is a cross-sectional view of a centrifuge according to the present invention.
2 is a three-dimensional configuration diagram of a screw conveyor in FIG.
3 is a cross-sectional view of FIG.
4 is a three-dimensional configuration diagram of the relay member in FIG.
5a to 5e is a process flow chart of a screw conveyor manufacturing method of the centrifuge according to the present invention.
6 is a flow chart of a screw conveyor manufacturing method of the centrifuge according to the present invention.

Hereinafter, with reference to the accompanying drawings in the detailed description of the present invention will be described in more detail.

As shown in Figure 1 to 4, the centrifugal separator (hereinafter referred to as 'centrifuge') having a structure-improved screw conveyor according to the present invention is largely driven means 100, outer drum 200, inner drum 300 and a screw conveyor 400.

Looking at each configuration,

The driving means 100 is

As to transmit the rotational driving force to the outer and inner drums (200, 300),

As shown in Figure 1,

A motor 111, a pulley 113 connected to the motor 111 by a belt 112, and a connecting member for connecting the pulley 113 and one end of the outer drum 200 ( A drive unit 110 including 114, and

A reduction unit 120 disposed at the other end of the outer drum 200 to interconnect the outer and inner drums 200 and 300.

It is made, including.

Thus, the external drum 200 is rotated by the drive unit 110,

The inner drum 300 is rotated together with the outer drum 200 by the deceleration unit 120 with a rotation difference.

The outer drum 200

As being rotated by receiving power from the driving means 100,

As shown in Figure 1,

In the form of a cylinder,

A solid outlet 210 at one end, and

Separation liquid outlet 220 at the other end

It is made, including.

The inner drum 300

As it is built in the outer drum 200, and rotates together with the outer drum 200 by the reduction unit 120 of the drive means 100,

As shown in Figure 1,

Internal receptacle 310,

Sludge inlet 320 is disposed in the receiving portion 310,

A sludge supply port 330 formed therethrough so that sludge introduced into the accommodation part 310 can be transferred between the outer and inner drums 200 and 300, and

Multiple concave mounting portion 340 is arranged in a spiral spaced apart on the outer peripheral surface

It is made, including.

The screw conveyor 400 is

As installed on the outer peripheral surface of the inner drum 300 to be disposed between the outer and inner drums (200, 300),

As shown in Figs. 1 to 3,

Corresponding mounting portion 411 with the mounting portion 340 formed in the inner drum 300, the relay body 412 connected to it, and connected to it is located on the circumference spaced from the outer peripheral surface of the inner drum 300 and A plurality of relay members 410 having a fitting portion 413 in the form of a yaw, and fixed to each of the mounting portions 340; and

The relay member 410 is inserted into and fixed to the fitting portion 413 of each of the relay members 410 to form a space S spaced with the inner drum 300, and two or more powders ( Spiral wing 420 consisting of 420a

It is made, including.

As a result, the screw conveyor 400 when the sludge supplied from the sludge supply port 330 between the outer and inner drums (200, 300) is separated into solids and separation liquid by the centrifugal force of the inner drum (300) ,

The separated solids are transported on the wing 420 by the rotation difference of the outer and inner drums 200 and 300 to be discharged to the solids outlet 210 of the outer drum 200.

Separation liquid flows through the separation space (S) to be discharged to the separation liquid outlet 220 of the outer drum (200).

Here, each of the powders 420a is preferably formed to form a pitch (P, P) of the wing portion 420,

The relay member 410 is identically arranged in each of the powders 420a, and two end portions of the relay members 410 that are in contact with each other are positioned at the fitting portion 413 of the relay member 410. It is desirable to arrange so that

According to this, not only the powder 420a can be easily manufactured, but also the positions of the two end portions which are in contact with each other in the two powders 420a which are adjacent to each other by the fitting portion 413 can be easily matched. do.

And as shown in (a) and (b) of Figure 4, the relay body 412 of the relay member 410 is preferably a flat cross-section of a circular or streamline (流 線),

According to this, the resistance of the separation liquid discharged through the separation space (S) during the rotation of the inner drum 300 is minimized to increase the efficiency of the centrifuge.

Hereinafter, a method of manufacturing a screw conveyor of a centrifuge according to the present invention will be described with reference to FIGS. 5A to 5E and 6.

As shown in Figure 6, the screw conveyor manufacturing method of the centrifuge according to the present invention is largely mounting portion forming step (S10), relay member installation step (S20), powder cutting step (S30), powder molding step (S40) and The wing portion forming step (S50) is made.

Looking at each step,

The mounting portion forming step (S10) is

As shown in FIG. 5A,

A step of forming a plurality of concave mounting portion 340 to be arranged in a spiral space at a predetermined interval on the outer peripheral surface of the cylindrical inner drum (300).

Here, the mounting portion 340 may be formed using a known cutting machine such as a drill.

The relay member installation step (S20) is

As shown in FIG. 5B,

The corresponding mounting portion 411 in the plurality of relay members 410 having a corresponding mounting portion 411 with the mounting portion 340, a relay body 412 connected thereto, and a yaw-shaped fitting portion 413 connected thereto. It is a step of fixing to the mounting portion 340.

On the other hand, the relay member 410 and the lower end of the outer peripheral surface of the relay body 412 in the state in which the corresponding mounting portion 411 is fitted to the mounting portion 340 to be firmly fixed to the mounting portion 340, It is preferable to weld the outer circumferential surface of the inner drum 300 to be in contact therewith,

In order to be able to accurately align the position of the relay member 410 fitting portion 413 for each powder 420a in the wing forming step (S50) to be described later, in the relay member installation step (S20) It may be sufficient to fit the corresponding mounting portion 411 closely to the mounting portion 340 so that the member 410 is not easily separated.

The powder cutting step (S30) is

As shown in FIG. 5C,

It is a step of forming a 'C' shape by cutting a portion of each of the powders 420a from two or more annular powders 420a.

That is, in this step, in the annular powder 420a produced by pressing a flat plate, the cut portion 421 is formed in a part of the annular powder 420a in a direction toward the center of the powder 420a to form a closed curved powder ( 420a) is processed into an open curve shape.

The powder molding step (S40) is

As shown in FIG. 5D,

In each of the powders 420a, one end and the other end of the cutout portion 421 are formed in a spiral manner in the opposite direction.

That is, in this step, each of the powders 420a is formed in the form of forming one pitch (P, see Fig. 1 and 2) of the wing by opening one end and the other end.

The wing forming step (S50) is

As shown in FIG. 5E,

It is a step of forming the wing portion 420 by inserting and fixing the helical powders 420a into the fitting portions 413 of the respective relay members 410 in the form of connecting each other.

In this case, both ends of the powder 420a are preferably disposed at the fitting portions 413 of the relay member 410, and thus two end portions of the powder 420a which are in contact with each other in two adjacent powders 420a. The back portion is aligned by the fitting portion 413, so that the coupling work for the two ends can be easily performed.

In addition, the joining operation of the two ends is preferably made by welding, in which case the welding of the fitting portion 413 and the powder 420a of each of the relay members 410, and the relay body 412 The outer circumferential surface of the lower portion (下端 部) and the operation of welding the outer circumferential surface of the inner drum 300 to be in contact with it may be carried out together.

In the above description of the present invention with reference to the accompanying drawings, a centrifugal separator having a specific shape and structure and a method for manufacturing a screw conveyor thereof have been described with reference to the accompanying drawings. Modifications are possible, and such modifications and variations should be interpreted as falling within the protection scope of the present invention.

100; Driving means
110; Drive unit 120; Reduction Unit
200; External drum
210; Solids outlet 220; Separation outlet
300; Internal drum
310; Receiver 320; Sludge Input
330; Sludge feed port 340; Mounting part
400; Screw conveyor
410; Relay member
411; Counterpart 412; Relay body 413; Fitting
420; Wing 420a; Powder
S; Space

Claims (4)

Drive means 100;
An external drum 200 and an inner drum 300 thereof rotated by receiving power from the driving means 100; And
A screw conveyor 400 installed on an outer circumferential surface of the inner drum 300 so as to be disposed between the outer and inner drums 200 and 300;
Including but not limited to,
The inner drum 300 is formed with a plurality of concave-type mounting portion 340 is arranged spirally at a predetermined interval on the outer peripheral surface,
The screw conveyor 400 is
Corresponding mounting portion 411 with the mounting portion 340, the relay body 412 connected to it, and connected to it is located on the circumference spaced from the outer peripheral surface of the inner drum 300 and the cross section is a yaw shape A plurality of relay members 410 having fitting parts 413 and fixed to each of the mounting parts 340, and
The relay member 410 is inserted into and fixed to the fitting portion 413 of each of the relay members 410 to form a space S spaced with the inner drum 300, and two or more powders ( Spiral wing 420 consisting of 420a
Centrifuge having a structure improved screw conveyor comprising a.
The method of claim 1,
The wing portion 420 is a structure-improved screw conveyor, characterized in that the two ends (butt) abuts on the two adjacent powders (420a) is located in the fitting portion 413 of the relay member 410. Centrifuge having.
The method according to claim 1 or 2,
The relay body 412 of each of the relay members 410 is a centrifugal separator having a structure-improved screw conveyor, characterized in that the flat section is circular or streamlined.
Forming a plurality of concave mounting portions 340 spirally arranged at a predetermined interval on an outer circumferential surface of the cylindrical inner drum 300 (S10);
The corresponding mounting portion 411 in the plurality of relay members 410 having a corresponding mounting portion 411 with the mounting portion 340, a relay body 412 connected thereto, and a yaw-shaped fitting portion 413 connected thereto. Fixing to the mounting unit 340 (S20);
Cutting at least a portion of each of the powders 420a from the two or more annular powders 420a to form a 'C' shape (S30);
Step (S40) forming one end portion and the other end portion of the powder 420a on the incision portion 421 side in a spiral direction in the opposite direction; And
Forming spiral parts 420a by inserting and fixing the powders 420a into the fitting parts 413 of the respective relay members 410 to form a wing part 420;
Screw conveyor manufacturing method of the centrifuge comprising a.

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