WO2023106806A1

WO2023106806A1 - Centrifugal separation device for starch extraction

Info

Publication number: WO2023106806A1
Application number: PCT/KR2022/019745
Authority: WO
Inventors: 김영태; 윤대한; 심을섭
Original assignee: 김영태; 서원학; 윤대한
Priority date: 2021-12-07
Filing date: 2022-12-06
Publication date: 2023-06-15
Also published as: KR20230085975A

Abstract

Provided is a centrifugal separation device for starch extraction, comprising at least one centrifugal separation unit that separates solids by applying centrifugal force to a mixed liquid such that the structure is simple, the device is easy to manufacture, and use and maintenance thereof are simple, wherein the centrifugal separation unit comprises: a rotating tank that has an accommodation space formed therein, and is erected vertically and rotatably disposed, so as to allow solid-liquid separation to be performed by centrifugal force; and a drive unit for applying centrifugal force by rotating the rotating tank at high speed.

Description

Centrifugal Separator for Starch Extraction

The present disclosure relates to a centrifugal separation device for starch extraction.

In general, a solid component can be obtained from a suspension by centrifuging a suspension in which a solid and a liquid are mixed. For example, starch as a solid content can be separated by centrifuging a starch-containing suspension obtained by dissolving potato, tapioca, wheat, and corn as vegetable raw materials.

A conventional centrifugal separator has a decanter structure equipped with a screw conveyor inside a rotating body, and raw liquid is supplied to the rotating body through a supply pipe and separated into solid and liquid by the centrifugal force of the rotating body. The separated solids are transported and discharged to the tip of the cone by the screw conveyor, and the liquid is discharged through the end of the rotating body.

However, the conventional centrifugal separator is very expensive equipment and requires a lot of cost to provide facilities, so it is not easy to use in areas such as rural areas in underdeveloped countries with low income.

In addition, since the structure of the centrifuge is complicated and the solid content therein must be collected using a screw, use and maintenance are not easy.

In addition, there is a problem in that it is difficult to increase productivity as a series of processes of supplying raw liquid to the centrifuge and discharging solids are discontinuously performed.

An object of the present invention is to provide a centrifugal separator for starch extraction that has a simple structure and is easy to manufacture.

The present problem is to provide a centrifugal separator for starch extraction that is easy to use and maintain.

An object of the present invention is to provide a centrifugal separator for extracting starch that can more easily collect the separated starch.

The object of the present invention is to provide a centrifugal separator for starch extraction which is capable of continuous operation.

The centrifugal separation device of the present embodiment includes a centrifugal separation unit for separating solids by applying centrifugal force to a mixed liquid, wherein the centrifugal separation unit forms an accommodation space therein and is rotatably disposed to perform solid-liquid separation by centrifugal force. A tank and a driving unit for applying centrifugal force by rotating the rotating tank at high speed may be included.

The rotating tank is erected vertically to form an opening at the top, and a side wall portion extending along the axial direction from the top opening and separating the solid-liquid mixture from the liquid mixture is formed, protruding inward along the inner circumferential surface of the top opening, so that the mixed liquid It may include an inner flange to prevent the separation of the separated solid content.

A supply unit for supplying the mixed solution into the rotating tank may be further included.

The supply unit is connected to a supply line for transporting a mixture of solids and the supply line, and is inserted into the interior through an upper opening of the rotary tank, and an outlet at the lower end is bent toward the inner surface of the rotary tank. It may include a supply pipe for ejecting the mixed solution.

The supply unit may further include a rotation driver for rotating the supply pipe.

The rotating tank may further include an outer flange protruding outward along an outer circumferential surface of the upper opening to induce discharge of water.

The rotary tank may further include a discharge pipe communicating with the inside of the bottom center and extending in the axial direction to discharge solids flowing down from the side wall portion.

The rotating tank may further include an inclined wall portion formed between a lower end of the side wall portion and the discharge pipe and forming an inclined surface with an inner diameter gradually decreasing.

The drive unit may include a drive motor, a rotation shaft of the drive motor, a drive roll and a driven roll installed in the rotation tank, and a rotation belt connected between the drive roll and the driven roll.

The drive unit may further include a clutch provided between the rotation shaft of the drive motor and the drive roll to selectively connect or disconnect power.

The driving unit is connected to two centrifugal separators through the clutch to alternately operate each centrifugal separator, and after the driving motor stops, the clutch of one centrifugal separator in operation is separated and stopped A clutch of the other centrifugal separation unit may be connected to transmit rotational force remaining after the drive motor is stopped to the other centrifugal separation unit that is stopped.

The centrifugal separator may further include a buffer for suppressing vibration.

The buffer unit may include at least one elastic member installed between the rotary tank and the external fixture.

The rotating tank has a container shape with a lower end closed, and a coupling shaft detachably mounted with the driving unit protrudes along the axial direction at a lower center, and a socket portion for fixing the coupling shaft is provided on the rotating shaft of the driving motor. It may have a structure in which the rotating tank is separated from the drive motor to collect solids separated from the solid and liquid.

It may further include a mixing unit that is connected to the supply line and provides a mixture of solid and liquid.

The mixing unit may include a hopper for accommodating the object, a grinder connected to the hopper to grind and grind the object, and a liquid supply unit connected to the grinder and supplying liquid to the grinder.

A recovery line connecting the rotating tank and the mixing unit to supply water discharged from an upper opening of the rotating tank to a grinder of the mixing unit may be further included.

A filter unit connected to and installed on the supply line may further include a filter unit for separating dregs of a predetermined particle size or more from the mixed solution.

The centrifugal separation device may further include a filter washing unit for washing the filter unit.

The filter washing part includes a washing liquid line connected to the supply line at the rear end of the filter part and supplying washing liquid to the filter part in the reverse direction, an inlet switching valve installed between the supply line and the washing liquid line, and a supply line at the front end of the filter part. It may include a discharge line for discharging the washing liquid that is connected and passed through the filter unit, and a discharge conversion valve installed between the supply line and the discharge line.

The centrifugal separation device includes a plurality of centrifugal separators, a plurality of branch lines branched on the supply line and connected to each centrifugal separator, and a switching valve installed in the supply line to control the supply of the mixed solution to each branch line. Including, it may be a structure in which a plurality of centrifugal separators are arranged in parallel in the supply line and operated alternately.

The centrifugal separation device includes a plurality of filter units, a plurality of filter lines branched on the supply line and connected to each filter unit, and installed in the supply line at the inlet and outlet of each filter line, respectively, for each filter line. It may have a structure in which a plurality of filter units are arranged in parallel in a supply line and operated alternately, including an inlet switching valve and an outlet switching valve for controlling the supply of the mixed solution.

The centrifugal separation device includes a filter washing unit for individually washing the plurality of filter units, and the filter washing unit is connected to a rear end of the filter unit to supply a washing liquid to the filter unit, and is connected to a front end of the filter unit. It includes a discharge line for discharging and processing the washing liquid that has passed through the filter unit, an inflow switching valve installed in the washing liquid line and a discharge switching valve installed in the discharge line, and the washing liquid line is branched into two at the rear end of the filter unit and each filter line and the discharge line is branched into two and connected to each filter line at the front end of the filter unit, and the inlet conversion valve is installed on the washing liquid line to control the supply of the washing liquid to each filter line, and the discharge It may be a structure in which a discharge switching valve is installed on the line to control the discharge of the washing liquid in each filter line.

The rotary tank is laid horizontally and rotatably disposed, has an opening at one end thereof, and extends in an axial direction from the opening and has a side wall portion in which solid-liquid separation of the mixed solution is performed, and protrudes inward along the inner circumferential surface of the opening It may include an inner flange which is formed and prevents the separation of the solids separated from the mixed solution.

The supply unit includes a supply line for transporting a mixed liquid mixed with solids, a supply pipe connected to the supply line, inserted into the rotating tank, and having an outlet bent toward the inner surface of the rotating tank to eject the mixed liquid into the inner surface of the rotating tank. can do.

A shaft member communicating with the inside and extending outward along an axial direction may be formed at a center of the front end opposite the opening of the rotating tank, and the supply pipe may be inserted into the rotating tank through the inside of the shaft member.

A slip ring is installed between the supply pipe and the supply line so that the supply pipe is rotatably connected with respect to the supply line, and the supply pipe may be fixed to the shaft member to rotate like the shaft member.

The rotating tank may further include an outer flange protruding outward along an outer circumferential surface of the opening to induce discharge of water.

A collection box installed outside the opening of the rotating tank along the circumferential direction to collect water discharged from the opening, connecting the collection box and the mixing unit to supply the water discharged from the opening of the rotating tank to the grinder of the mixing unit A recovery line may be further included.

The drive unit may include a drive motor, a rotation shaft of the drive motor, a drive roll and a driven roll installed on the shaft member of the rotation tank, and a rotation belt connected between the drive roll and the driven roll.

It may further include a control unit provided at the opening of the rotary tank to control the amount of solids extracted.

The control unit includes a discharge passage for discharging the mixed liquid by forming a relatively low height on the inner flange, a blocking plate installed on the inner flange and blocking the discharge passage, and changing the height of the blocking plate with respect to the discharge passage to obtain solid content. It may be a structure that controls the amount of extraction.

Long holes are formed at both ends of the blocking plate, and fastening holes for fastening bolts are formed at positions corresponding to the long holes on the front surface of the inner flange to adjust the height of the blocking plate by adjusting the position of the long holes for the bolts. can be

According to this embodiment, it is possible to easily separate solids such as starch from the mixed solution using centrifugal force.

The separated starch can be easily collected using its own weight.

The structure is simple and manufacturing is possible at low cost, so it is possible to build equipment even in low-income farmhouses.

It can be used more conveniently, and maintenance is easy, so usability can be improved.

Multiple units can be operated continuously, maximizing productivity.

Energy waste can be minimized by supplying the rotational force remaining after the driving motor is stopped to another stopped centrifugal separator to provide the rotational force of the centrifugal separator.

1 is a schematic diagram showing a centrifugal separator of this embodiment.

2 is a schematic diagram showing another embodiment of a centrifugal separator.

Figure 3 is a schematic diagram for explaining the starch extraction action by the centrifugal separator of the present embodiment.

Fig. 4 is a schematic diagram showing a vibration reduction structure of the centrifugal separator of this embodiment.

5 is a schematic diagram showing a centrifugal separation device of another embodiment.

FIG. 6 is a schematic diagram showing a vibration reduction structure of the centrifugal separator according to the embodiment of FIG. 5 .

7 is a schematic diagram showing a centrifugal separation device of another embodiment.

8 and 9 are schematic diagrams showing the starch amount control structure of the centrifugal separator.

Fig. 10 is a schematic diagram showing the centrifugal separator and power transmission structure of this embodiment.

Hereinafter, embodiments of the present invention will be described in detail. However, this is presented as an example, and the present invention is not limited thereby, and the present invention is only defined by the scope of the claims to be described later. The embodiments described below may be modified in various forms without departing from the concept and scope of the present invention. Where possible, identical or similar parts are indicated using the same reference numerals in the drawings.

The terminology used below is only for referring to specific embodiments and is not intended to limit the present invention. As used herein, the singular forms also include the plural forms unless the phrases clearly indicate the opposite. As used herein, the meaning of "comprising" specifies a particular characteristic, region, integer, step, operation, element, and/or component, and specifies another specific characteristic, region, integer, step, operation, element, element, and/or group. does not exclude the presence or addition of

Hereinafter, this embodiment will be described as an example of an apparatus for extracting starch through centrifugation. This embodiment is not limited thereto and may be applied to all devices for centrifuging and extracting various solids other than starch.

Fig. 1 shows the centrifugal separator of this embodiment.

As shown in FIG. 1, the centrifugal separator 10 is connected to a mixing unit 20 that provides a mixture of starch and liquid suspension (hereinafter referred to as a mixed liquid), and a supply line through which the mixed liquid is transported. (30), a filter unit 40 installed on the supply line 30 to remove debris of a predetermined particle size or more from the mixed solution, a filter washing unit 50 for washing the filter unit 40, and a supply line 30 It may include a centrifugal separation unit 60 for separating starch, which is a solid content, by applying centrifugal force to the mixed solution supplied through the mixture.

Accordingly, the mixed solution provided from the mixing unit 20 is supplied to the centrifugal separator 60 after passing through the filter unit 40 along the supply line 30, and is separated into solid and liquid by centrifugal force in the centrifugal separator 60. Solids can be extracted.

The mixing unit 20 is connected to a hopper 21 for accommodating an object to be pulverized, a grinder 22 connected to the hopper 21 to grind and grind the object, and a grinder 22 to supply liquid to the grinder 22 A liquid supply unit 23 may be included. The liquid may be water for example.

The mixing unit 20 may prepare a suspension by pulverizing various objects containing starch and mixing them with water. The object may be, for example, potato, tapioca, wheat, or corn.

The object may be put into the grinder 22 from the hopper 21 and pulverized into fine particles. The crusher 22 may be varied in various ways depending on the object. In the process of pulverizing the object, water is introduced into the pulverizer 22 through the liquid supply unit 23 to create a mixed solution.

The mixed solution made through the grinder 22 is transported through the supply line 30.

The filter unit 40 is installed on the supply line 30 and separates debris of a predetermined particle size or more from the mixture. The mixed solution containing only fine-sized starch particles may be supplied to the centrifugal separation unit 60 through the filter unit 40 .

In this embodiment, a plurality of two or more filter units 40 may be provided and used alternately. Accordingly, it is possible to easily perform a replacement or cleaning operation of the filter unit 40 while continuously filtering the mixed solution by switching the operation of the filter unit 40 when necessary.

1 illustrates a structure having two filter units 40 . As shown in FIG. 1 , the apparatus 10 may have a structure in which two filter units 40 are disposed in parallel in a supply line 30 and operated alternately. To this end, the device 10 includes two filter units 40, a filter line 41 branched on a supply line 30 and connected to each filter unit 40, and an inlet side of each filter line 41. It may include an inlet switching valve 42 and an outlet switching valve 43 installed on the supply line 30 at the outlet side and controlling the supply of the mixed liquid to each filter line 41.

The inlet switching valve 42 and the outlet switching valve 43 are, for example, 3-way valves connecting the supply line 30 and the two filter lines 41, and the supply line 30 is connected to the two Optionally connected to the filter line (41). The other filter line 41 is blocked so that the mixed liquid is not supplied.

Thus, according to the operation of the inlet switching valve 42 and the outlet switching valve 43, the supply line 30 is connected to either filter line 41 of the two filter lines 41 to filter the mixed liquid. Therefore, when cleaning or replacing one filter unit 40, the mixed solution can be filtered through the other filter unit 40 and supplied to the centrifugal separation unit 60.

In this way, by operating the two filter units 40 alternately, it is possible to extract the starch by continuously supplying the mixed solution.

The apparatus 10 may further include a filter washing unit 50 for cleaning the filter unit 40 .

In this embodiment, the filter washing unit 50 has a structure in which each of the two filter units 40 is individually washed. The filter washing unit 50 is connected to the rear end of the filter unit 40 and is connected to the washing liquid line 51 for supplying the washing liquid to the filter unit 40, and is connected to the front end of the filter unit 40 and passes through the filter unit 40. It may include a discharge line 52 for discharging, an inflow conversion valve 53 installed in the washing liquid line 51 and a discharge conversion valve 54 installed in the discharge line 52.

The washing liquid line 51 is branched into two at the rear end of the filter unit 40 and connected to each filter line 41, and the discharge line 52 is branched into two and is connected to each filter line 41 at the front end of the filter unit 40. connected with

In addition, an inlet switching valve 53 is installed on the washing liquid line 51 to control the supply of washing liquid to each filter line 41, and a discharge switching valve 54 is installed on the discharge line 52 to control each filter line 41. It has a structure that controls the discharge of the washing liquid from the filter line 41.

The inflow conversion valve 53 and the discharge conversion valve 54 are, for example, 3-way valves that switch the flow direction of the two branched washing fluid lines 51, and the washing fluid line 51 and the two filter lines (41) Optionally connect between them.

Accordingly, the washing liquid line 51 and the discharge line 52 are connected to one filter line 41 of the two filter lines 41 according to the operation of the inlet switching valve 53 and the discharge switching valve 54. The washing liquid supplied from the rear end of the filter unit 40 through the washing liquid line 51 cleans the filter unit 40 while passing through the filter unit 40 in a reverse direction. The washing liquid that has passed through the filter unit 40 is discharged through a discharge line 52 connected to the filter line 41 at the front end of the filter unit 40 .

As mentioned above, the filter of the filter unit 40 in which washing is performed among the filter lines 41 by the inlet switching valve 42 and the outlet switching valve 43 installed on the inlet and outlet sides of the branched filter line 41. The line 41 is blocked so that the mixed liquid is not supplied. Accordingly, the filter unit 40 can be easily cleaned by supplying the washing liquid in the reverse direction through the filter line 41 in a state in which the mixed liquid is not supplied.

The mixed solution from which debris is removed through the filter unit 40 is supplied to the centrifugal separation unit 60 connected to the supply line 30 .

The centrifugal separation unit 60 of the present embodiment forms an accommodation space therein, is erected vertically and rotatably arranged, and solid-liquid separation is performed by centrifugal force. It may include a drive unit 80 for applying and a supply unit for supplying the mixed solution into the rotary tank 70.

Accordingly, the mixed solution supplied from the supply unit to the inner circumferential surface of the rotating tank 70 is separated into solid and liquid by the centrifugal force of the rotating tank 70 rotating at high speed. Therefore, the solid starch is collected toward the inner circumference of the rotary tank 70, and the light water is collected toward the center and discharged to the outside through the open top opening 71 of the rotary tank 70.

The rotating tank 70 may be formed in a cylindrical shape with a circular cross-section. The rotating tank 70 has a structure capable of discharging only water to the outside while blocking the discharge of the centrifuged starch. To this end, the rotating tank 70 has an open top opening 71, a side wall portion 72 formed with the same diameter along the axial direction from the top opening 71 to separate the solid-liquid mixture, and the top opening 71 may include an inner flange 73 protruding inward along the inner circumferential surface to prevent separation of the solids separated from the mixed solution.

The side wall portion 72 extends vertically along the axial direction of the rotary tank 70. The extension length of the side wall portion 72 may be variously modified. The mixed liquid is supplied to the side wall portion 72 through the supply unit. The liquid mixture is separated into solid and liquid at the side wall portion 72 as the rotating tank 70 rotates.

The solid-liquid separated water from the side wall portion 72 is discharged to the outside through the upper opening 71 by the centrifugal force of the rotating tank 70 . An inner flange 73 is formed in the upper opening 71 of the side wall portion to block discharge of solids other than water.

The inner flange 73 continuously protrudes inward along the circumference of the upper opening 71 of the rotating tank 70. The protruding length of the inner flange 73 may be variously modified. The inner flange 73 acts as a stopper to prevent the separation of the solid-liquid separated starch. The starch may be accommodated in the side wall portion 72 in a thickness from the inner surface of the side wall portion 72 to the upper end of the inner flange 73 .

In addition, the rotating tank 70 may further include a discharge pipe 74 communicating with the inside and extending in the axial direction at the lower center portion to discharge solids flowing down from the side wall portion 72 . Thus, the starch collected on the side wall portion 72 may fall downward due to its own weight and be discharged to the outside through the discharge pipe 74. Therefore, the starch extracted from the rotary tank 70 can be more easily discharged to the outside of the rotary tank 70 through the discharge pipe 74 and collected without separating the rotary tank 70 from the device 10.

In addition, the rotating tank 70 may further include an inclined wall portion 75 formed between the lower end of the side wall portion 72 and the discharge pipe 74 and forming an inclined surface with an inner diameter gradually reduced. Thus, the starch falling from the side wall portion 72 can easily flow down toward the discharge pipe 74 along the inclined surface of the inclined wall portion 75 and be discharged.

As shown in FIG. 2 , the rotary tank 70 may further include an outer flange 76 protruding outward along an outer circumferential surface of the upper opening 71 to induce discharge of water.

The outer flange 76 continuously protrudes outward along the circumference of the upper opening 71 of the rotary tank 70. The protruding length of the outer flange 76 may be variously modified. The outer flange 76 may regulate a discharging position of the separated solid-liquid water. That is, the water beyond the inner flange 73 moves to the end of the outer flange 76 and is discharged to the outside. Accordingly, water passing through the inner flange 73 and passing through the upper opening 71 of the rotary tank 70 is guided by the outer flange 76 and can be discharged more smoothly and effectively. In addition, water is not scattered widely in the rotary tank 70 and is discharged only from the front end of the outer flange 76. Therefore, it is possible to collect the water discharged from the rotating tank 70 more effectively.

The apparatus 10 of this embodiment may further include a recovery line 62 for recycling the collected water. The recovery line 62 may connect, for example, between the rotary tank 70 and the supply line 30 to re-supply the recovered water to the supply line.

Preferably, the recovery line 62 may have a structure that connects the rotating tank 70 and the mixing unit 20 to supply water discharged from the rotating tank 70 to the grinder 22 of the mixing unit 20. there is.

In this way, by recycling the water discharged from the solid-liquid separation in the rotary tank 70 without discarding it, it is possible to prevent waste of starch remaining in the water and maximize starch extraction efficiency.

The driving unit 80 is, for example, connected between a driving motor 81, a driving roll 82 and a driven roll 83, a driving roll and a driven roll installed in a rotating shaft and a rotating tank 70 of the driving motor 81 It may include a rotating belt 84 to be. Accordingly, when the drive motor 81 is driven, power is transmitted through the rotation belt 84 so that the rotation tank 70 is rotated at high speed. The drive unit 80 may be modified in various ways in terms of a structure for rotating the rotating tank 70 at high speed.

The supply unit is connected to the supply line 30 for supplying the mixed solution and is inserted into the inside through the open top opening 71 of the rotating tank 70, and the lower end is bent toward the inner surface of the rotating tank 70 to rotate the tank. (70) It may include a supply pipe 64 for ejecting the mixed solution to the inner surface.

The supply pipe 64 may be disposed along the center of rotation of the rotating tank 70 . The lower end of the supply pipe 64 forms the outlet 65 and has a structure bent toward the inner surface of the side wall portion 72 of the rotary tank 70. Accordingly, the mixed liquid may be discharged from the outlet 65 of the supply pipe 64 to the side wall portion 72 .

In this embodiment, the supply pipe 64 is fixed to the top of the rotating tank 70 and can rotate like the rotating tank 70. The supply line 30 may be freely rotatably connected to the supply pipe 64 via, for example, a slip ring or the like. Accordingly, the mixed solution supplied to the supply pipe 64 through the supply line 30 may be ejected to the shaft wall portion 72 through the outlet 65 of the supply pipe 64 that rotates like the rotating tank 70 .

As the supply pipe 64 also rotates when the rotary tank 70 rotates, the mixed solution discharged from the outlet 65 of the supply pipe 64 does not fall downward due to the centrifugal force caused by the rotation of the supply pipe 64, and the side wall portion 72 can be ejected toward

In another embodiment, as shown in FIG. 1, the supply pipe 64 is provided separately from the rotating tank 70, and the supply unit may further include a rotary driving unit 66 for rotating the supply pipe 64. can

The rotary drive unit 66 is connected to the supply pipe 64 to rotate the supply pipe 64 at a predetermined speed. The rotational drive unit 66 may include, for example, a rotational belt connecting a motor, a rotational shaft of the motor, and the supply pipe 64 . The supply pipe 64 may discharge the mixed solution while being rotated at a predetermined speed by the rotary driving unit 66 . Accordingly, the mixed liquid discharged from the outlet 65 of the supply pipe 64 is ejected toward the side wall portion 72 without falling downward due to the centrifugal force caused by the rotation of the supply pipe 64 . Accordingly, all of the mixed liquid is discharged through the side wall portion 72 to perform solid-liquid separation.

In the centrifugal separation device 10 of this embodiment, two or more centrifugal separation units 60 may be provided and operated alternately. Therefore, by operating the two centrifugal separators 60 alternately, the operation of centrifuging the mixed solution by rotating the rotary tank 70 and the operation of collecting the centrifuged starch from the rotary tank 70 can be continuously performed. be able to

1 illustrates a structure having two centrifugal separators 60 . As shown in FIG. 1 , the apparatus 10 may have a structure in which two centrifugal separators 60 are arranged in parallel in a supply line 30 and operated alternately. To this end, the apparatus 10 includes two centrifugal separators 60, a plurality of branch lines 68 branched on a supply line 30 and connected to each centrifugal separator 60, and a supply line 30 ) and may include a flow path conversion valve 69 for controlling the supply of the mixed solution to each branch line 68.

Accordingly, the supply line 30 is connected to one branch line 68 of the two branch lines 68 according to the operation of the flow path conversion valve 69, and the mixed solution is connected to the centrifugal separator connected to the branch line 68. (60) can be supplied.

Therefore, in a state in which the mixed solution is supplied to one side centrifugal separation unit 60 and centrifuged, the other side centrifugal separation unit 60 is stopped to collect the separated starch.

In this way, while alternately operating the two centrifugal separators 60, the mixture can be continuously centrifuged to extract starch.

3 shows the action of the centrifugal separator according to this embodiment.

As shown in FIG. 3, when the centrifugal separator 60 is driven, the rotary tank 70 and the supply pipe 64 rotate at a set speed. The mixed liquid supplied through the supply pipe 64 is discharged to the side wall portion 72 of the rotary tank 70 through the outlet 65 . The mixed liquid discharged through the side wall portion 72 is rotated like a rotary tank 70 and separated into starch and water by centrifugal force.

Starch that is separated from solid-liquid and is heavier than water is collected on the inner surface of the side wall portion 72 by centrifugal force, and relatively light water is collected in layers toward the center of rotation on the inside of the starch. Thus, the mixed solution is divided into a solid layer by starch and a liquid layer by water.

An inner flange 73 is formed at the upper opening 71 of the rotary tank 70, so that starch located on the inner side of the side wall portion 72 is blocked by the inner flange 73 and is not discharged to the outside. On the other hand, the water separated from the mixture and located inside the starch is discharged outward beyond the inner flange 73 as the water level gradually increases. Here, the water level may refer to a height from the starch top toward the central axis from the inner surface of the side wall portion 72 to the water surface.

As the mixed solution is continuously supplied through the supply pipe 64 and solid-liquid separation continues, the thickness of the starch accumulated on the inner surface of the side wall portion 72 gradually increases. When the solid-liquid separated starch reaches the height of the inner flange 73, the water layered inside the starch can be completely discharged beyond the inner flange 73. Accordingly, by separating the liquid mixture into solid and liquid through the centrifugal separator 60, only the solid starch on the inner surface of the side wall part 72 can be extracted.

When the centrifugation of the liquid mixture is completed, a brake or the like is driven to stop the rotary tank 70 . When the rotating tank 70 is stopped, the starch adhering to the inner surface of the side wall portion 72 by centrifugal force flows downward due to its own weight and falls. The falling starch flows down the inclined surface of the inclined wall portion 75 of the rotary tank 70 and is discharged to the outside of the rotary tank 70 through the discharge pipe 74 and collected.

The centrifugal separator 60 of this embodiment may further include a buffer for suppressing vibration.

4 shows various embodiments of the buffer unit according to the present embodiment.

Figure 4 (a) shows a structure in which the rotating tank 70 is rotatably supported and fixed. In this embodiment, for example, the discharge pipe 74 of the rotating tank 70 may be pivotally supported on a bearing block or the like on a facility.

4(b) shows a structure including at least one elastic member in which the buffer unit is installed in a suspended manner. In the case of this embodiment, for example, an elastic spring 90 is installed between the discharge pipe 74 of the rotary tank 70 and the equipment, so that the rotary tank 70 is suspended and installed on the equipment via the elastic spring 90. can The driving motor 81 of the driving unit 80 may also be installed hanging on the equipment via the elastic spring 90. Thus, vibration generated from the driving unit 80 or the rotating tank 70 is dampened by the elastic spring 90, thereby minimizing vibration during operation.

Figure 4 (c) shows a structure in which the shock absorber is installed in a damper 91 method for supporting a load. In this embodiment, for example, the discharge pipe 74 of the rotary tank 70 is installed on the equipment via a plurality of dampers 91 so that the load can be supported. The driving motor 81 of the driving unit 80 may also be supported on the equipment by the damper 91. The damper 91 may have a structure that absorbs an impact by, for example, a spring and hydraulic pressure. Accordingly, since the damper 91 supports the rotating tank 70 or the drive unit 80, vibration generated during operation can be effectively dampened by the damper 91.

5 shows another embodiment of the centrifugal separator.

Hereinafter, other configurations of the centrifugal separation unit 60 of this embodiment are the same as those of the above-described embodiment except for the structure in which the lower end of the rotating tank 92 is blocked. omit explanation.

The centrifugal separator 60 of this embodiment may have a structure in which the lower end of the rotation tank 92 is blocked, and may have a structure in which the rotation tank 92 is separated from the drive motor 81 to collect solids separated from solid and liquid.

As shown in FIG. 5, the rotating tank 92 may have a container shape with a lower end closed, and a coupling shaft 93 detachably mounted with the driving unit 80 in the lower center protruding along the axial direction. there is. In addition, a socket unit 94 for fixing the coupling shaft 93 of the rotation tank 92 may be provided on the rotation shaft of the drive motor 81 for coupling between the rotation tank 92 and the drive unit 80 .

As such, according to the present embodiment, the rotary tank 92 has a container shape in which the lower end is blocked and the upper opening 71 is opened, so that the rotary tank 92 can be directly mounted on the rotation shaft of the drive motor 81 and used. there is.

Therefore, by omitting the configuration for power transmission and simplifying the structure of the device 10, it is possible to lower the manufacturing cost.

The coupling shaft 93 and the socket portion 94 may have a structure in which, for example, a screw coupling method is coupled. That is, the coupling shaft 93 has a male screw formed on an outer circumferential surface, and the socket portion 94 has a female screw formed on an inner circumferential surface, so that they can be screwed together. The coupling shaft 93 and the socket portion 94 may be detachably coupled and may be variously modified in terms of structures capable of transmitting rotational force.

Therefore, if necessary, the mixed solution may be separated into solid and liquid by directly coupling the rotary tank 92 to the rotary shaft of the drive motor 81 and rotating it at high speed. As the rotary tank 92 rotates, the solid-liquid separated starch is collected on the side wall 72 of the rotary tank 92, and the separated water is discharged to the outside through the upper opening 71 of the rotary tank 92. .

The mixed solution may be supplied into the rotating tank 92 through a supply line or a supply unit connected to the supply line. In addition, the rotary tank 92 of this embodiment has a structure with a closed bottom, and the operator can pour and supply the mixed solution into the rotary tank without a separate supply line. As the rotating tank 81 rotates, the liquid mixture inside is pressed against the side wall portion 72 by the centrifugal force of the rotating tank and separated into solid-liquid. The separated solid content remains on the side wall portion 72, and water is discharged to the outside through the upper opening 71 of the rotating tank 92 by centrifugal force.

As described above, the inner flange 73 or/and the outer flange 76 may be formed in the upper opening 71 of the rotating tank 92 of the present embodiment. The structure and operation of the inner flange 73 and the outer flange 76 are the same as those described above, and a detailed description thereof will be omitted.

When the solid-liquid separation is completed, the connection between the socket part 94 and the coupling shaft 93 is released to separate the drive motor 81 and the rotary tank 92, and then turn the rotary tank 92 over to remove the starch collected inside. can be emitted with

FIG. 6 shows various buffer structures of the centrifugal separation unit according to the embodiment of FIG. 5 .

Figure 6 (a) shows a structure in which the driving motor 81 of the driving unit 80 is fixedly installed on the equipment to minimize rotational vibration. The rotating tank 92 can be stably rotated while installed in the driving motor 81 fixed to the facility, thereby minimizing the generation of vibration.

6(b) shows a buffer structure using at least one elastic member installed in a suspension manner. In the case of this embodiment, for example, an elastic spring 90 is installed between the driving motor 81 of the driving unit 80 and the equipment, and the driving motor 81 is suspended on the equipment via the elastic spring 90. can Accordingly, vibration generated from the drive unit 80 or the rotating tank 92 is dampened by the elastic spring 90, thereby minimizing vibration during operation.

6(c) shows a buffer structure installed in a damper 91 method for supporting and supporting a load. In the case of this embodiment, for example, the driving motor 81 is installed on the equipment via the damper 91 so that the load can be supported. The damper 91 may have a structure that absorbs an impact by, for example, a spring 90 and hydraulic pressure. Accordingly, since the drive motor 81 and the rotating tank 92 are supported by the damper 91, vibration generated during operation can be effectively dampened by the damper 91.

7 shows a centrifugal separator in another embodiment.

Hereinafter, other configurations of the centrifugal separation unit 60 of this embodiment are the same as those of the above-described embodiment except that the rotating tank 70 is horizontally laid and rotated. Therefore, the same reference numerals are used for the same components, and detailed descriptions thereof are omitted.

As shown in FIG. 7, the centrifugal separation unit 60 of this embodiment forms an accommodation space therein, is laid horizontally and is rotatably disposed, and at least one rotary tank 70 in which solid-liquid separation is performed by centrifugal force, rotation A driving unit 80 for rotating the tank 70 at high speed to apply centrifugal force, and a supply unit for supplying the mixed solution into the rotating tank 70 may be included.

The rotary tank 70 has an opening 71 formed at one end of the front end, and extends from the opening 71 along the axial direction, and the side wall portion 72 in which solid-liquid separation of the mixed solution is performed, and the inner circumferential surface of the opening 71 It may include an inner flange 73 protruding inward along the way to prevent separation of the solids separated from the mixed solution.

The rotary tank 70 may further include an outer flange 76 protruding outward along an outer circumferential surface of the opening 71 to induce discharge of water.

The rotating tank 70 is laid horizontally and rotated around the central axis. As a result, it can be driven more stably.

The liquid mixture supplied from the supply unit to the inner circumferential surface of the rotary tank 70 is separated into solid and liquid by the centrifugal force of the rotary tank 70 rotating at high speed. Therefore, the solid starch is collected toward the inner circumference of the rotary tank 70, and the light water is collected toward the center and discharged to the outside through the open opening 71 of the rotary tank 70.

A shaft member 77 communicating with the inside and extending outward along the axial direction is formed at the center of the front end opposite to the opening 71 of the rotating tank 70. The shaft member 77 is connected to the drive unit 80 and may act as a rotation shaft for rotationally driving the rotation tank 70 .

The drive unit 80 includes a drive motor 81, a drive roll 82, a driven roll 83, a drive roll 82 installed on the rotation shaft of the drive motor 81 and the shaft member 77 of the rotation tank 70. A rotation belt 84 connected between the driven rolls 83 may be included. Accordingly, when the drive motor 81 is operated, power is transmitted to the shaft member 77 through the rotation belt 84, and thus the rotation tank 70 is rotated at high speed.

The supply unit of this embodiment may have a structure for supplying the mixed solution into the rotating tank 70 through the shaft member 77 .

The supply unit is connected to the supply line 30 for transporting the mixture of solids, is inserted into the rotation tank 70 through the inside of the shaft member 77, and the outlet 65 is directed toward the inner surface of the rotation tank 70. It may include a supply pipe 640 that is bent and ejects the mixed solution into the inner surface of the rotary tank 70.

Accordingly, the mixed solution supplied through the supply pipe 64 may be ejected to the inner surface of the rotary tank 70 through the outlet and supplied to the side wall portion 72 .

The supply pipe 64 may have a relatively fixed structure with respect to the shaft member 77 . The supply pipe 64 may be spaced apart from the shaft member 77 to prevent interference with each other, or a bearing or sealing member may be installed therebetween.

In addition, the supply pipe 64 may be a structure that is fixedly installed to the shaft member 77 and rotates like the shaft member 77. Between the supply line 30 and the supply pipe 64, for example, a slip ring 67 is installed, and the supply pipe 64 can be connected while freely rotating with respect to the supply line 30 via the slip ring 67. there is. Accordingly, the mixed solution supplied to the supply pipe 64 through the supply line 30 may be ejected to the side wall portion 72 through the outlet 65 of the supply pipe 64 that rotates like the rotating tank 70 .

The centrifugal separation unit 60 of the present embodiment is installed along the circumferential direction outside the opening 71 of the rotary tank 70, and includes a collection box 63 for collecting water discharged from the opening 71, and a collection box 63 It may further include a recovery line 62 connecting between the mixing unit and supplying the water discharged from the opening 71 of the rotary tank 70 to the grinder of the mixing unit.

The collection box 63 is a ring-shaped structure in which the surface of the opening 71 facing the outer flange 76 is open, and is continuously disposed along the circumference of the opening 71 .

Thus, the water discharged out of the opening 71 by the centrifugal force of the rotary tank 70 may be collected and collected in the ring-shaped collection box 63 installed along the circumference of the opening 71 . A recovery line 62 is connected to the lower side of the collection box 63, so that the water collected in the collection box 63 is transported through the collection line 62 and can be reprocessed.

The centrifugal separation unit 60 of this embodiment may further include a control unit 100 provided in the opening 71 of the rotary tank 70 to adjust the amount of solids extracted.

As shown in FIG. 8, the control unit 100 of this embodiment is installed on the inner flange 73 to form a relatively low height to discharge the mixed solution 110 and the inner flange 73 and to the discharge path. A blocking plate 120 blocking 110 may be included. Thus, a structure may be used to adjust the amount of solid content extracted by changing the height of the blocking plate 120 relative to the discharge path 110 .

The discharge passage 110 acts as a stepped groove through which water is discharged by lowering the height of the wall of the inner flange 73 serving as a blocking wall. Accordingly, when a centrifugal force is applied to the rotating tank 70, water is drained through the discharge passage 110 having a low height, and solids are extracted only as high as the discharge passage 110. Therefore, when the height of the discharge path 110 is high, a large amount of solid content can be extracted, and when the height of the discharge path 110 is low, only a small amount of solid content can be extracted.

The height of the discharge path 110 may mean a length from the inner circumferential surface of the rotary tank 70 to the inner tip of the discharge path 110 protruding toward the center.

At least two or more discharge passages 110 may be arranged at a predetermined angle along the inner flange 73 based on the center of the rotating tank 70 . For example, in the case of a structure with two discharge passages 110, they may be arranged at an angle of 180 degrees, and when there are three discharge passages 110, they may be arranged at an angle of 120 degrees. Accordingly, water may be discharged from the inside of the rotary tank 70 through the discharge path 110 while maintaining a balance.

The blocking plate 120 may be a flat plate structure having a size sufficient to sufficiently cover the discharge path 110 . The blocking plate 120 is installed in front of the inner flange 73 to block the discharge path 110.

The blocking plate 120 blocks the discharge path 110 and forms an inner front end of the discharge path 110 . The height of the discharge passage 110 may be changed by adjusting the position of the blocking plate 120 to change the height of the blocking plate 120 relative to the discharge passage 110 .

As shown in FIG. 8, long holes 122 are formed at both ends of the blocking plate 120 so that the installation position of the blocking plate 120 can be changed, and the long holes 122 correspond to the front surface of the inner flange 73. A fastening hole 124 for fastening the bolt 126 is formed at the position. The long hole 122 may mean a long hole. Accordingly, the height of the blocking plate 120 can be changed by adjusting the position of the blocking plate 120 by moving the long hole 122 for the bolt 126 .

In another embodiment, a plurality of blocking plates 120 having different heights of the blocking plates 120 with respect to the discharge passage 110 are provided, and the blocking plates 120 having a desired height are placed on the front surface of the inner flange 73 as necessary. It is possible to adjust the height of the discharge path 110 by installing.

9 shows a structure in which the amount of starch extraction is adjusted by varying the height of the blocking plate 120.

9(a) shows a state in which the blocking plate 120 is fixed to the front surface of the inner flange 73 via the bolt 126 by moving the blocking plate 120 outward as much as possible.

Accordingly, the height of the blocking plate 120, that is, the height R of the discharge passage 110 formed by the inner tip of the blocking plate 120 is extremely low, so that the discharge passage 110 at a height R at which the water and solid content is lowered A large amount can be released through Therefore, only a small amount of solid content is extracted without being blocked by the blocking plate 120 and discharged.

9 (b) shows a state in which the height (R) of the discharge path 110 is slightly increased by moving and installing the blocking plate 120 inward compared to (a), and FIG. 9 (c) shows a state in which the height R of the discharge path 110 is increased to the maximum by moving the blocking plate 120 inward as much as possible.

By moving and installing the blocking plate 120 inward, the height R of the discharge path 110 formed by the inner tip of the blocking plate 120 is increased, thereby reducing the amount of water and solids discharged, and the blocking plate 120 It is possible to increase the extraction amount of solids extracted without being clogged and discharged.

In this way, by simply adjusting the height R of the blocking plate 120, it is possible to adjust the extraction amount of the solid content.

Two or more centrifugal separators 60 of this embodiment may be provided and operated alternately. Accordingly, by rotating the two centrifugal separators 60 alternately, the rotary tank 70 is rotated to centrifugally separate the mixture and the centrifuged starch collected from the rotary tank 70 is continuously performed. You will be able to do it. In addition, by transferring the remaining power of the driving unit to the other centrifugal separation unit 60 in a state in which the driving unit is stopped for the starch collection operation, it is possible to minimize energy loss.

10 shows a power transmission structure for two centrifugal separators.

10 (a) and (b) illustrate a structure in which two centrifugal separators 60 are arranged to face each other at 180 degrees, and a structure in which power is transmitted through a single driving unit 80 is illustrated. For convenience of description below, the centrifugal separation unit 60 on the left side of the drawings is referred to as a centrifugal separator A, and the centrifugal separation unit 60 on the right side is referred to as a centrifugal separator B.

The driving unit 80 may further include a clutch 85 for selectively connecting or disconnecting power between the rotation shaft of the driving motor 81 and the driving roll 82 . The centrifugal separators 60 in (a) and (b) of FIG. 10 have the same structure except for the clutch connection structure of the drive unit. 10 (a) illustrates a structure in which a separate power transmission mechanism is connected and installed between the rotary shaft of the drive motor 81 and the clutch 85, and (b) shows a direct connection between the rotary shaft and the clutch of the drive motor 81. structure is illustrated.

Accordingly, the power of the driving motor 81 may be distributed to the centrifugal separator A or the centrifugal separator B using the clutch 85 . Accordingly, the starch extraction operation may be continuously performed by alternately driving the centrifugal separator A and the centrifugal separator B. In addition, in a state in which the drive motor 81 is stopped, the remaining rotational force of the drive motor can be supplied to other stopped centrifugal separators using the clutch 85 . Thus, it is possible to minimize energy waste of the drive unit.

That is, as shown in (c) of FIG. 10, the power of the driving motor 81 is transmitted to the centrifugal separator A in a state where the clutch 85 is connected to the centrifugal separator A and the clutch 85 of the centrifugal separator B is disconnected. do. Accordingly, the centrifuge A is rotated to perform starch extraction, and the centrifugal separator B is stopped to recover starch.

In this state, when the starch extraction operation for the centrifugal separator A and the starch recovery operation for the centrifugal separator B are completed, the driving of the driving motor 81 is stopped and the clutch 85 of the centrifugal separator A is disconnected. Then, the drive motor 81 and the centrifugal separator B are connected by connecting the clutch 85 of the centrifugal separator B.

Accordingly, the centrifugal separator A is stopped while the rotational force gradually decreases, and the rotational speed of the centrifuge B gradually increases as the rotational force remaining in the state in which the driving motor 81 is stopped is transmitted through the clutch 85 and rotated. Here, the residual rotational force can be understood as a rotational moment until the rotation completely stops after the driving of the driving motor is stopped.

By driving the driving motor 81 again while the centrifugal separator B is rotated to some extent, the centrifugal separator B can increase the rotational speed to a desired speed and continue to perform the starch extraction operation.

In this way, by stopping the driving motor and using the remaining energy as the initial rotational force of the resting centrifugal separator 60, energy efficiency can be maximized.

Although exemplary embodiments of the present invention have been shown and described as described above, various modifications and other embodiments may be made by those skilled in the art. All of these modifications and other embodiments are to be considered and included in the appended claims, without departing from the true spirit and scope of the present invention.

Claims

At least one centrifugal separation unit for separating solids by applying centrifugal force to the mixed solution;

The centrifugal separator includes at least one rotating tank forming an accommodation space therein and rotatably disposed to perform solid-liquid separation by centrifugal force, and a drive unit for applying centrifugal force by rotating the rotating tank at high speed,

The rotating tank is erected vertically to form an opening at the top, and a side wall portion extending along the axial direction from the top opening and separating the solid-liquid mixture from the liquid mixture is formed, protruding inward along the inner circumferential surface of the top opening, so that the mixed liquid A centrifugal separator for extracting starch comprising an inner flange preventing separation of separated solids.
According to claim 1,

Further comprising a supply unit for supplying the mixed solution into the rotating tank,

The supply unit is connected to a supply line for transporting a mixture of solids and the supply line, and is inserted into the interior through an open upper end of the rotary tank, and an outlet at the lower end is bent toward the inner surface of the rotary tank to be bent toward the inner surface of the rotary tank. A centrifugal separation device for starch extraction comprising a supply pipe for ejecting the mixed solution into the
At least one centrifugal separation unit for separating solids by applying centrifugal force to the mixed solution;

The centrifugal separator includes at least one rotating tank forming an accommodation space therein and rotatably disposed to perform solid-liquid separation by centrifugal force, and a drive unit for applying centrifugal force by rotating the rotating tank at high speed,

The rotary tank is laid horizontally and rotatably disposed, has an opening at one end thereof, and extends in an axial direction from the opening and has a side wall portion in which solid-liquid separation of the mixed solution is performed, and protrudes inward along the inner circumferential surface of the opening A centrifugal separator for extracting starch comprising an inner flange formed to prevent the separation of solids separated from the mixed solution.
According to claim 3,

Further comprising a supply unit for supplying the mixed solution into the rotating tank,

The supply unit includes a supply line for transporting a mixed liquid mixed with solids, a supply pipe connected to the supply line, inserted into the rotating tank, and having an outlet bent toward the inner surface of the rotating tank to eject the mixed liquid into the inner surface of the rotating tank. do,

A shaft member communicating with the inside and extending outward along the axial direction is formed at the center of the tip opposite the opening of the rotating tank, and the supply pipe is inserted into the rotating tank through the inside of the shaft member to extract starch. for centrifugal separation devices.
According to claim 1 or 3,

The rotary tank is a centrifugal separator for extracting starch further comprising an outer flange protruding outward along an outer circumferential surface of the opening to induce discharge of water.
According to claim 1 or 3,

The centrifugal separator for extracting starch further comprises a buffer for suppressing vibration.
According to claim 2 or 4,

Centrifugal separator for extracting starch further comprising a recovery line for recovering water discharged from the opening of the rotary tank and supplying it to the supply line.
According to claim 7,

Centrifugal separator for extracting starch further comprising a collection box installed along the circumferential direction outside the opening of the rotary tank to collect water discharged from the opening.
According to claim 1,

The rotary tank is a centrifugal separator for extracting starch further comprising a discharge pipe communicating with the inside at the bottom center and extending in the axial direction to discharge solids flowing down from the side wall portion.
According to claim 1 or 2,

The rotating tank has a container shape with a lower end closed, and a coupling shaft detachably mounted with the driving unit protrudes along the axial direction at a lower center, and a socket portion for fixing the coupling shaft is provided on the rotating shaft of the driving motor of the driving unit, A centrifugal separator for extracting starch of a structure that separates the rotating tank from the driving motor to collect the solid-liquid separated solids.
According to claim 2 or 4,

The centrifugal separation device includes a plurality of centrifugal separators, a plurality of branch lines branched on the supply line and connected to each centrifugal separator, and a switching valve installed in the supply line to control the supply of the mixed solution to each branch line. Including, a centrifugal separator for extracting starch having a structure in which a plurality of centrifugal separators are arranged in parallel in a supply line and operated alternately.
According to claim 2 or 4,

A centrifugal separator for extracting starch further comprising at least one filter unit connected to the supply line and separating debris of a predetermined particle size or more from the mixed solution.
According to claim 12,

Further comprising a filter washing unit for washing the filter unit,

The filter washing part includes a washing liquid line connected to the supply line at the rear end of the filter part and supplying washing liquid to the filter part in the reverse direction, an inlet switching valve installed between the supply line and the washing liquid line, and a supply line at the front end of the filter part. A centrifugal separation device for extracting starch, comprising a discharge line for discharging the washing liquid that has passed through the filter unit and a discharge switching valve installed between the supply line and the discharge line.
According to claim 1 or 3,

Further comprising a control unit provided at the opening of the rotary tank to control the amount of solids extracted,

The control unit includes a discharge path for discharging the mixed liquid by forming a relatively low height on the inner flange, a blocking plate installed on the inner flange and blocking the discharge path, and changing the height of the blocking plate for the discharge path to increase the solid content. A centrifugal separator for starch extraction with a structure that controls the amount of extraction.
According to claim 1 or 3,

The driving unit further includes a clutch provided between the rotating tanks of the centrifugal separator to selectively connect or cut off power, and is connected to two centrifugal separators through the clutch to alternately operate each centrifugal separator. ego,

After the drive motor stops driving, the clutch of one centrifugal separator on one side is disconnected and the clutch on the other centrifugal separator that is stopped is connected to transfer the rotational force remaining after the drive motor stops to the other centrifugal separator that is stopped. Centrifugal device for starch extraction of