KR20220102154A - Separation screw and juice apparatus using the same - Google Patents

Abstract

The present invention relates to a separating screw.
A separation screw according to an embodiment of the present invention includes a first body, a first module including a plurality of slits formed in the first body, and a second body detachably coupled to the first body, and in the slit a second module including a rib to be inserted; .

Description

SEPARATION SCREW AND JUICE APPARATUS USING THE SAME

The present invention relates to a separation screw and a juicer using the separation screw, and more particularly, to a separation screw detachably configured as two modules and a juicer using the same.

Recently, as interest in health increases at home, the frequency of use of a juicer having a function that an individual can directly make juice from a juice target such as vegetables, grains, or fruits and consume it is increasing.

As disclosed in Korean Patent Registration No. 793852, a general operation form of such a juicer is a method of pressing and squeezing a juicer using the principle of squeezing juice by grinding beans with a millstone, for example.

To this end, the juicer includes a driving unit for providing a rotational force; a juice drum having a drive shaft receiving rotational force from the drive unit; a screw connected to the drive shaft in the juice drum and compressing and pulverizing the juice target by a screw spiral formed in a part thereof; And a mandrel for separating the juice made by the screw is provided. The driving unit for providing rotational force to the juicer includes a motor and a reducer. The motor is connected to the drive shaft to transmit rotational force to the screw. To this end, the drive shaft passes through the lower part of the juicer drum and is connected with a screw.

In general, the mesh drum has a mesh structure. In the case of a mesh drum having a mesh structure, since it is easy to be clogged by a juice target, there is a problem in that the extraction efficiency is low. In addition, since the mesh is densely formed, there is a problem in that it is difficult to wash the juiced target caught in the mesh. In addition, various filter structures can be assumed, but it is difficult to apply to a press-type juicer using a screw, such as performing a simple filtration function.

The present invention has been devised to solve the above problems, and by configuring the screw detachably into two modules, the screw performs the function of a conventional mandrel and is easy to clean and provides a separation screw and a juicer using the same for that purpose

The above object, according to the present invention, a first module comprising a plurality of slits; and a second module detachably coupled to the first module and including a rib inserted into the slit, wherein, when the first module and the second module are coupled, between the rib and the slit This can be achieved by a separation screw in which a gap is formed and the liquid from the outside flows into the inside.

In addition, the above object, according to the present invention, a first body and a first module comprising a plurality of slits formed in the first body; and a second module comprising a second body detachably coupled to the first body and a rib inserted into the slit, wherein when the first module and the second module are coupled, the rib and A gap is formed between the slits and may be achieved by a separation screw that introduces an external liquid into the inside.

Here, the second body may be formed to be accommodated inside the first body.

Here, a portion of the first body in which a slit is not formed and a portion in which a rib is not formed in the second body may be coupled to overlap in a radial direction.

Here, the rib may be formed to protrude from the outer surface of the second body.

Here, the gap may be formed at the lower end of the separation screw.

Here, a screw spiral may be formed on the outer surface of at least one of the first body and the second body.

Here, screw spirals are respectively formed on the outer surface of the first body and the outer surface of the ribs of the second body, and when the first module and the second module are coupled, each screw spiral may be continuously connected. .

Here, the slit of the first body may be formed in a direction crossing the screw spiral.

Here, the gap may be formed to become larger toward the inner side in the radial direction.

Here, the gap may be formed to become smaller toward the lower side in the longitudinal direction.

Here, the width of the slit may be formed to become wider toward the inner side in the radial direction.

Here, when the second body is accommodated inside the first body, a separation space may be formed between the first body and the second body.

Here, the separation space may be formed to become wider toward the lower side.

Here, a first inclined surface may be formed at an upstream longitudinal edge of the slit based on the rotation direction of the separation screw.

Here, a second inclined surface may be formed on a downstream longitudinal edge of the rib based on the rotation direction of the separating screw.

Here, a support for supporting between the first body and the second body may be interposed between the inner surface of the first body and the outer surface of the second body.

Here, the support part may be formed to protrude from at least one of an inner surface of the first body and an outer surface of the second body to support it.

Here, the support part includes a first support part protruding from the inner surface of the first body and a second support part protruding from the outer surface of the second body, and the first support part and at least one side of the second support part are mutually It can be formed to contact.

Here, an insertion groove into which an end of the support part is inserted may be formed on the inner surface of the first body or the outer surface of the second body.

Here, the contact portion of the support may be formed of a pad made of silicon or an elastic material.

Here, the second body may have a cylindrical shape with one side closed.

Here, a key protrusion may be formed inside the first body, and a key groove into which the key protrusion is inserted may be formed on a blocked surface of the second body.

Here, a magnet is disposed on the blocked surface of the second body, and the first module and the second module may be coupled to each other by magnetic force.

Here, a seating groove may be formed on the lower side of the second body, and a packing may be disposed in the seating groove.

Here, a first step may be formed on the lower inner circumferential surface of the first body, and a second step corresponding to the first step may be formed on the lower outer circumferential surface of the second body.

Here, the screw shaft may be disposed in the center of the inner circumference of the first body, and a through hole into which the screw shaft is fitted may be formed in the blind surface of the second body.

Here, the screw shaft and the through hole may be formed in a square shape.

Here, the angle between the square axis and the square hole may be 90 degrees.

Here, a first gap maintaining step may be formed on the upper side of the slit.

Here, a second gap maintaining step may be formed on the lower side surface of the rib.

Here, a separation handle formed to protrude inward in the radial direction may be formed on the inner circumferential surface of the second body.

Here, a brush formed of an elastic material may be coupled to the separation handle.

Here, the juice discharge hole may be formed at the lower end of the second body.

In addition, the above object, according to the present invention, the above-described separation screw; And it can be achieved by a juicer comprising a; and a juice drum accommodating the separation screw and formed with the first rib tucks protruding from the inner circumferential surface are spaced apart from each other by a predetermined interval.

Here, the first rib tuck may be formed along the longitudinal direction of the juicing drum, and a second rib tuck having a length shorter than that of the first rib tuck may be formed under the inner circumferential surface of the juicing drum.

Here, a third rib-tuck having a shorter length than the first rib-tuck and a longer length than the second rib-tuck may be formed between the first ribs or between the second ribs.

Here, on the bottom surface of the inner bottom surface of the separating screw of the juicing drum, a juice discharging groove for discharging the juice introduced into the separating screw by separating the juicing target into juice and offal between the separating screw and the juicing drum is formed, and the A residue discharge groove for discharging the residue may be formed on the outer bottom surface of the separation screw of the juice drum.

Here, the protrusion surface of the first rib jaw is formed to be inclined at a certain angle from the upper part to the lower part, and the outer circumferential surface of the separation screw is formed to be inclined at a certain angle with respect to the vertical line, and the angle formed by the protrusion surface of the first rib jaw is formed. and the angle formed by the outer circumferential surface of the separation screw may be formed to be the same.

Here, the radius of the inner surface of the juice drum becomes smaller from the top to the middle part, and the radius can be increased from the middle part to the bottom.

Here, the inner surface of the juice drum may be formed so that the distance from the separation screw is closer from the upper to the middle portion.

Here, the inner surface of the juice drum may be formed such that the distance from the separation screw increases from the middle part to the lower part.

Here, the inner surface of the juicing drum may be formed so that a distance from the separation screw between the middle portion and the lower portion is maintained constant.

According to an embodiment of the present invention, the configuration is simple and manufacturing cost can be reduced by eliminating the conventional mesh drum.

In addition, it is easier to clean than a conventional mandrum, and it is possible to improve the juice extraction efficiency.

In addition, the problem of clogging of the manghole in the conventional mandrel drum is fundamentally solved, so that the brush required for the conventional vertical juicer is not required, and various parts for driving the brush are not required.

1 and 2 are exploded perspective views of a juicer according to an embodiment of the present invention.
3 and 4 are exploded perspective views of a separation screw according to an embodiment of the present invention shown in FIGS. 1 and 2 .
5 is a combined perspective view of the separation screw of FIGS. 3 and 4 ;
6 is a cross-sectional view taken along line I-I' in FIG. 5 .
7 is a cross-sectional view taken along II-II' in FIG. 5 .
FIG. 8 is a cross-sectional view taken along line III-III' in FIG. 6 .
9 is a perspective view of the juice drum shown in FIGS. 1 and 2 .
10 is a cross-sectional view of the juice drum to which the separation screw of the present invention is applied.
11 and 12 are exploded perspective views of a separation screw according to a first modified example.
13 and 14 are exploded perspective views of a separation screw according to a second modified example.
15 shows various embodiments of the support of FIG. 10 ;
16 is an exploded perspective view according to a third modified example of the separation screw;
17 is a combined perspective view of FIG. 16 .
18 is a cross-sectional view taken along line IV-IV' of FIG. 17 .
19 is an exploded perspective view according to a fourth modified example of the separation screw;
FIG. 20 is a combined perspective view of FIG. 19 .
21 is a cutaway perspective view of the juice drum to which the separation screw of FIG. 20 is applied.
22 and 23 are exploded perspective views of a separation screw according to a fifth modified example.
24 is a cutaway perspective view of the juice drum to which the separation screw of the present invention is applied.

Hereinafter, preferred embodiments of the present invention will be described based on the accompanying drawings. The disclosure of the present specification is intended to describe in detail enough to be easily practiced by those of ordinary skill in the art to which the present invention pertains, whereby the technical spirit and scope of the present invention are not disclosed herein. It is not meant to be limited to the disclosed embodiments or descriptions thereof.

In addition, since each configuration shown in the drawings is arbitrarily shown for the convenience of description, the present invention is not necessarily limited to the bar shown in the drawings, and the size or shape of the components shown in the drawings are exaggerated for clarity and convenience of explanation. can be shown. Therefore, the terms specifically defined in consideration of the configuration and operation of the present invention may vary depending on the intention or custom of the user or operator, and definitions of these terms should be made based on the content throughout this specification.

In the present specification, unless otherwise specified, the terms 'upper', 'upper', 'top' or similar terms refer to a side or a part or end close to the side into which the material is input, and 'bottom', 'bottom', The term 'bottom' or a similar term is intended to refer to a portion or end opposite to or close to the side into which the material is fed.

1 and 2 are an exploded perspective view of a juicer according to an embodiment of the present invention, and FIGS. 3 and 4 are an exploded perspective view of a separation screw according to an embodiment of the present invention shown in FIGS. 1 and 2, FIG. 5 is a combined perspective view of the separation screw of FIG. 2 , FIG. 6 is a cross-sectional view taken along I-I' in FIG. 5, FIG. 7 is a cross-sectional view taken along II-II' in FIG. 5, and FIG. 6 is a cross-sectional view taken along III-III', FIG. 9 is a perspective view of the juice drum shown in FIGS. 1 and 2, and FIG. 10 is a cross-sectional view of the juice drum to which the separating screw of the present invention is applied.

1 and 2 , a juicer according to an embodiment of the present invention may include a hopper 100 , a juice drum 200 , and a separation screw 300 .

The hopper 100 is detachably coupled to the upper portion of the juicing drum 200, and the juicing target (eg, vegetables, grains, fruits, etc.) is introduced through the hopper 100 and then guided to the juicing drum 200. .

The juice drum 200 is formed in a cylindrical shape with an open top, and a separation screw 300 may be disposed therein. A juice outlet 220 capable of discharging juice and a residue outlet 230 capable of discharging residues may be formed on one lower side of the juice drum 200 . The juice target is separated into residue and juice by the interaction between the juice drum 200 and the separation screw 300 when the separation screw 300 rotates, and the residue is left in the radially outer lower end of the separation screw 300 . and the juice moves in the radial direction of the separation screw 300 to move to the lower end. Thereafter, the residue is discharged through the residue outlet 230 , and the juice is discharged through the juice outlet 220 through a path different from the path through which the residue is discharged.

A drum hole 240 is formed in the center of the lower portion of the juice drum 200 . The driving shaft (not shown) may be inserted through the drum hole 240 and coupled with the separation screw 300 positioned inside the juice drum to transmit power. The inner peripheral surface of the drum hole 240 may have a shape corresponding to the shape of the driving shaft so that the driving shaft can be inserted.

The separation screw 300 rotates by receiving power through the drive shaft inside the juice drum 200, and by interaction with the juice drum 200, the juice target introduced through the hopper 100 is converted into residue and juice. The separated juice moves to the inside of the separation screw 300 and is discharged through the juice outlet 220 . The separation screw 300 according to the present invention is configured to be separated and coupled to the first module 10 and the second module 20. It will be described in detail with reference to FIG. 8 .

The separation screw 300 according to an embodiment of the present invention may include two cylindrical first modules 10 and second modules 20 .

The first module 10 includes a first body 14 having a generally open lower portion and a cylindrical shape having a hollow therein, and a plurality of slits 15 formed long in the longitudinal direction along the circumference of the first body 14 . formed by including Although the drawing shows a long rod-shaped slit 15 in the longitudinal direction, if the slit 15 is a hole that intersects with a screw spiral protrusion 13 to be described later, whether it is a rod-shaped hole or an egg-shaped hole, it is not limited thereto. does not In addition, in the drawing, the slits 15 are formed at equal intervals along the circumference of the first body 14 , but the present invention is not limited thereto.

On the outer circumferential surface of the first body 14, screw spiral projections 13 (hereinafter, also referred to as 'screw spiral' for convenience) may be formed in an oblique line with respect to the longitudinal direction (or the vertical direction). The screw spiral 30 crushes and/or juices the juice object through interaction with the juice drum 200, and may be formed of at least one spiral.

As shown in FIG. 4 , a screw shaft 11 coupled to the drive shaft may be formed long downwardly in the center of the inside of the first body 14 . In addition, the screw shaft 11 is formed to protrude from the upper surface of the first body 14 can be rotatably inserted into the receiving hole formed in the bottom surface of the hopper (100). A screw hole 12 through which the rotational force of the driving shaft is transmitted is perforated in the lower portion of the screw shaft 11 .

The second module 20 includes a second body 22 in a cylindrical shape with a generally embedded upper portion and a plurality of protruding shapes corresponding to the slits 15 of the first module 10 on the outer surface of the second body 22 . It may be formed of ribs (21). The ribs 21 shown in FIGS. 3 and 4 are formed integrally with the second body 22 in a shape protruding from the second body 22 , but can be separated in a manner that is inserted into the second body 22 . may be formed. In addition, it is preferable that the rib 21 is formed so that the width of the rib 21 increases from the upper part to the lower part. In response to this, the above-described slit 15 is also preferably formed so that the width of the slit 15 increases from the top to the bottom. As described above, as the ribs 21 and the slits 15 are formed to be wider from the top to the bottom, the first module 10 and the second module 20 are moved up and down, and the ribs 21 are placed on the slit 15. When the two modules 10 and 20 are coupled to be inserted, the sliding coupling between the slit 15 and the rib 21 may be stably performed.

Similar to the first module 10 , screw spiral protrusions 29 (hereinafter, also referred to as 'screw spirals' for convenience) may be formed on the outer peripheral surface of the second module 20 . In the case of the second module 20 , the screw spiral protrusion 29 may be formed on the outer peripheral surface of the rib 21 . At this time, depending on the shape of the screw spiral and the position of the rib 21 , the screw spiral protrusion 29 may not be formed on the outer peripheral surface of some of the ribs 21 .

In addition, when the first module 10 and the second module 20 are coupled, as shown in FIG. 5 , the screw spirals 13 and 29 formed in the first module 10 and the second module 20 . This can be formed continuously. There are cases in which some sections are slightly cut off, but generally continuous screw helices 13 and 29 are formed. To this end, the outer diameter of the first body 14 forming the slit 15 and the outer diameter of the rib 21 may be the same, and the protrusion heights of the screw spiral protrusions 13 and 29 may be the same.

As shown in FIG. 3 , a through hole 30 through which the screw shaft 11 is fitted may be formed in the upper surface 27 of the second module 20 . In order to fix the coupling position of the first module 10 and the second module 20 and prevent the relative rotation of the first module 10 and the second module 20, the through hole 30 may be a prismatic hole, The screw shaft 11 may be formed as a prismatic shaft having a shape corresponding to the through hole 30 . 3 and 4 illustrate that the through hole 30 and the screw shaft 11 have a rectangular shape, the shape of the through hole 30 is not limited thereto. In this specification, the first module 10 and the second module 20 may be fixed at four different positions by the screw shaft 11 which is a square-shaped shaft and the through-hole 30 which is a square-shaped hole.

At this time, the coupling position of the first module 10 and the second module 20 so that the screw spiral projection 13 formed on the first module 10 and the screw spiral projection 29 formed on the second module 20 coincide with each other can be constant. That is, it is assumed that the angle formed by the reference point of the first module 10 and the reference point of the second module 20 along the circumferential direction at the position where the first module 10 and the second module 20 are completely coupled is 0 degrees. When the reference point of the first module 10 and the reference point of the second module 20 have angles set along the circumferential direction (for example, 90 degrees, 180 degrees, 270 degrees), the square axis and the square hole Thus, the first module 10 and the second module 20 may be completely coupled. At this time, the screw spiral projections 13 formed on the first module 10 and the screw spiral projections 29 formed on the second module 20 may coincide (ie, form a continuous screw spiral). In order to make the coupling position of the first module 10 and the second module 20 constant, a space between the plurality of ribs 21 in which a relatively narrow space and a relatively wide space are periodically arranged at angles set along the circumferential direction. can be formed with

In addition, the screw spiral protrusion 29 may not be formed on the outer peripheral surface of the rib 21 of the second module 20 . In this case, the same or similar juicing efficiency can be achieved as compared to the case where the screw spiral protrusion 29 is formed on the outer circumferential surface of the rib 21 by narrowing the width of the rib 21 .

A seating groove 25 may be formed at the lower side of the second module 20 so that the separation screw 300 can be seated on the juice drum 200 . A seating protrusion (not shown) corresponding to the seating groove 25 may be formed on the lower surface of the juice drum 200 to protrude upward. A packing may be disposed in the seating groove 25 , and by combining the seating groove 25 to surround the seating protrusion, it is possible to prevent the residue separated during the juice extraction process from flowing into the screw 300 .

In addition, as shown in FIGS. 3 and 4 , a first step 16 is formed at the lower end of the first body 14 of the first module 10, and correspondingly, a first step 16 is formed on the lower side of the second body 22. Two steps 23 may be formed. The second step 23 of the second module 20 and the first step 16 of the first module 10 combine to withstand the pressure transmitted to the screw 300 , and the residue flows into the screw 300 . make it not happen

Meanwhile, a magnet accommodating part 26 may be formed on the top surface 27 of the second module 20 . When the second module 20 is coupled to the first module 10, a magnet is placed in the magnet accommodating part 26 so that the second module 20 and the first module 10 are not easily separated. By disposing a magnet or a magnetic material of opposite polarity on the inside of (10), the second module 20 can be stably coupled to the first module 10 by magnetic force.

When the first module 10 and the second module 20 formed as described above are combined, the inner diameter of the first body 14 of the first module 10 is the second body 22 of the second module 20 ) larger than the outer diameter, the first module 10 is wrapped and coupled to accommodate the second module 20, and the rib 21 of the second module 20 is inserted into the slit 15 of the first module 10 When combined, the portion in which the slit 15 of the first body 14 is not formed and the portion in which the rib 21 is not formed of the second body 22 are coupled in a radially overlapping manner.

At this time, as the rib 21 of the second module 20 is inserted into the slit 15 of the first module 10 , a predetermined gap a is formed between the slit 15 and the rib 21 . The juice is introduced into the separation screw 300 and discharged through the gap (a), and the residue from which the juice is separated may be collected and discharged to the outside between the separation screw 300 and the juice drum 200 . The gap a may be formed entirely in the longitudinal direction of the separation screw 300 , but may preferably be formed at a predetermined length at the lower end of the separation screw 300 .

At this time, the gap (a) may be formed to become larger toward the inner side in the radial direction as shown in FIG. 6 . For example, if the width of the slit 15 is formed to become wider inward in the radial direction as shown, when the rib 21 is inserted into the slit 15, between the slit 15 and the rib 21 The gap (a) to be formed may be formed to become larger toward the inner side in the radial direction. As described above, as the gap (a) is formed to gradually increase toward the inner side in the radial direction, it is possible to prevent the problem of clogging the gap (a) by the residue during the juicing process or interfering with the flow of juice. In this embodiment, the gap (a) is formed so that it becomes larger toward the inside in the radial direction through the shape of the slit 15, but through the shape of the rib 21, or the shape of the rib 21 and the slit 15 Through the combination, it is possible to form the shape of the aforementioned gap (a) in various ways.

In addition, as shown in the enlarged view of FIG. 5 , the gap (a) may be formed to become smaller toward the lower side in the longitudinal direction. As described above, the shape change of the longitudinal gap (a) can be formed in various ways through the combination of the shapes of the slits 15 or the ribs 21 in the same way as the shape of the radial gap (a). In addition, the gap (a) may be formed to gradually narrow from the upper part to the lower part, and the gap (a) in the upper part may be widened around a predetermined point and the gap (a) in the lower part may be formed in stages to become narrower.

Since a greater pressure is applied to the lower side of the separation screw 300 , the lower gap (a) is preferably formed narrowly. For example, in the case of a hard juice target such as carrots, juice may be discharged through the gap (a) formed on the lower side during the pressing process. In the case of a soft juice target such as a tomato, juice may be discharged as the juice target accumulated in the gap (a) formed on the lower side as well as the gap (a) formed on the lower side during the compression process rises to the wide gap (a) on the upper side. As described above, when the size of the gap (a) is not constant in the longitudinal direction, it is possible to improve the squeezing efficiency for both a hard juice target such as carrots and a soft juice target such as tomatoes.

In addition, when the first module 10 and the second module 20 are coupled, the outer surface of the second body 22 and the inner surface of the first body 14 as shown in FIGS. 6 to 8 . A gap may be formed between the side surfaces to form a separation space. (For reference, the juice drum 200 is shown together with a dotted line in FIGS. 6 to 8 for better understanding.) The juice introduced into the separation space through the gap (a) through the gap is the first module (10). and the second module 20 may move downward. At this time, the juice discharge hole 28 may be formed on the lower side of the second body 22 . The juice collected in the lower part of the separation space between the first module 10 and the second module 20 through the juice discharge hole 28 may be introduced into the separation screw 300 .

At this time, the clearance may become wider toward the lower side of the separation screw 300 as shown in FIG. 8 . The clearance can secure a space in which the juice can be introduced and flowed between the first module 10 and the second module 20 through the gap (a).

Hereinafter, the above-described separation screw 300 is accommodated therein and interacts when the separation screw 300 rotates to separate the juice target into juice and offal, and FIGS. 9 and 10 . It will be described in more detail with reference to .

A plurality of first rib jaws 260 and second rib jaws 250 may be formed to be spaced apart from each other at regular intervals along the circumferential direction on the inner circumferential surface of the juicing drum 200 . The first rib tuck 260 and the second rib tuck 250 may be formed to be inclined in the longitudinal direction or at an acute angle in the longitudinal direction. As the separation screw 300 rotates, the material may be compressed or crushed by the screw spirals 13 and 29 and the interaction between the first rib jaws 260 and the second rib jaws 250 . The first rib tuck 260 may additionally perform a function of guiding the juice target to the lower portion of the juice drum 200 . In addition, the first rib tuck 260 may perform a function of adjusting the position of the separation screw 300 and adjusting the juice space in addition to the function of compressing and crushing the material.

The first rib jaw 260 is formed along the longitudinal direction of the juice drum 200, and the second rib jaw 250 is a part of the juice drum 200 in the longitudinal direction (more specifically, the lower part of the juice drum 200). ) can only be formed. That is, the length of the first rib tuck 260 may be formed to be longer than the length of the second rib rib 250 .

If the first rib tuck 260 and the second rib tuck 250 are not present, the juice target may not go down and stagnate, or the compression or crushing force may be low or may not occur. In addition, the first rib jaw 260 and the second rib jaw 250 may be formed by the compression force generated in the process of transferring and pulverizing the material by the spiral of the separating screw 300 of the juice drum 200 . deformation can be prevented.

Generally, the first rib tuck 260 and the second rib tuck 250 are sandwiched in a narrow portion in which the material input into the juice drum 200 comes into contact with the screw 300 so that the material can go down. do. The first rib tuck 260 and the second rib tuck 250 may perform a function of squeezing the material together with the screw spirals 13 and 29 while making the material go down. Therefore, the first rib tuck 260 and the second rib tuck 250 do not need to be formed in the longitudinal direction of the juice drum 200, and have a shape that intersects the screw spirals 13 and 29, so that the material is efficiently transported and compressed. For this purpose, it may be implemented in an inclined form having a constant inclination with respect to the longitudinal direction.

In addition, the first rib tuck 260 is formed long along the longitudinal direction on the inner circumferential surface of the juicing drum 200, so that the material is transported and compressed by the screw spirals 13 and 29 as well as the function of guiding and compressing the material. It is possible to perform a reinforcing function to prevent deformation of the juice drum 200 due to the compression force generated in the process, and a function of adjusting the accommodation position of the screw 300 in the juice drum 200 and adjusting the juice space.

In addition, the protrusion height of the first rib tuck 260 may be configured to have the same height from the upper part to the lower part, but it is gradually lowered from the upper part to the lower part or at least in the middle part of the first rib rib 260 in the longitudinal direction. One or more protruding stepped portions 260a may be formed. A protrusion height of an upper portion of the first rib tuck 260 based on the stepped portion 260a may be lower than a protrusion height of a lower portion of the first rib protrusion 260 .

A third rib tuck 270 may be additionally formed on the inner circumferential surface of the juice drum 200 . The third rib jaw 270 may be formed between the first rib jaws 260 or between the second rib jaws 250 .

For example, a plurality of first rib jaws 260 are formed along the circumferential direction on the inner circumferential surface of the juice drum 200 , and a plurality of second rib jaws 250 are formed between the first rib jaws 260 . A plurality of third ribs 270 may be formed between the first ribs 260 and the second ribs 250 and/or between the second ribs 250 . Preferably, the vertical length of the third rib tuck 270 may be shorter than the first rib tuck 260 and longer than the second rib tuck 250 .

Hereinafter, the first rib tuck 260 , the second rib tuck 250 , and the third rib tuck 270 will be described in more detail.

The first rib tuck 260 serves to transfer the material input to the inside of the juice drum 200 to the lower portion and primarily grind the juice target. To this end, the first rib tuck 260 may be vertically formed on the inner circumferential surface of the juice drum 200 in the vertical direction. The protruding height (h) of the first rib tuck 260 may be formed to have the same height (h) from the top to the bottom of the juice drum 200 . Preferably, the protrusion height (h) of the first rib tuck 260 may be formed in a shape that gradually decreases from the top to the bottom of the juicing drum 200 .

The number and arrangement of the first rib tucks 260 may be variously changed as needed in consideration of design conditions and efficiency of juicing.

In an embodiment of the present invention, the formation direction of the first rib tuck 260 has been described as an example that is formed vertically in the vertical direction of the juice drum 200, but the scope of the present invention is not limited thereto. That is, the first rib jaw 260 is formed to intersect the screw spirals 13 and 29 of the separation screw 300 , so that the separation screw 300 and the first rib jaw 260 of the juice drum 200 are formed to cross each other. It may be formed to have a certain inclination so that the juice target is first crushed while being transported downward by interaction.

The first rib tuck 260 is formed to be inclined downward from the upper part of the juice drum 200 to the lower part, and protrudes toward the separation screw 300 in the middle portion thereof to form a stepped stepped part 260a. . The stepped portion 260a may be variously modified in its position, number, or protruding height according to the shape of the separating screw 300 and the design conditions of the screw spirals 13 and 29 .

The second rib tuck 250 is transferred to the lower part by the rotation of the separating screw 300 that is accommodated in the juice drum 200 and rotates while cooperating with the separating screw 300 to finely and uniformly secondarily. It performs the crushing function.

To this end, the second rib tuck 250 may be formed on the lower inner circumferential surface of the juice drum 200 . The second rib tuck 250 may be formed to have a shorter vertical length than the first rib tuck 260 . That is, the first rib jaw 260 may be formed entirely from the upper portion of the juice drum 200 to the lower portion, and the second rib jaw 250 may be formed only up to a set height in the lower portion of the juice drum 200 .

If the second rib jaw 250 is formed in the middle portion of the inside of the juice drum 200, the material is finely divided in the middle portion of the juice drum 200 by the second rib jaw 250 and the separating screw 300. Because the particle size of the juice target is rapidly reduced by crushing the juice, the juice target cannot be caught on the second rib tuck 250 in the lower part of the juice drum 200, and together with the screw spirals 13 and 29 of the separation screw 300. will rotate Therefore, the juice target cannot be smoothly transferred downward along the screw spirals 13 and 29 of the separation screw 300 , and there is a problem in that the juice is stagnated in the juice drum 200 . When the juice target is stagnated inside the juice drum 200, the stagnation of the juice target is further aggravated due to the additionally input juice target, and there is an inconvenience of forcibly pressing the juice target using a separate tool. do.

In order to prevent such a problem from occurring, the second rib tuck 250 according to an embodiment of the present invention is formed in the lower portion of the juicing drum 200, so that the particle size of the juice target does not change rapidly. , and this causes the juice target to be smoothly transported downward by the screw spirals 13 and 29 and the first rib tuck 260, and is juiced by the second rib jaw 250 at the lower part of the juice drum 200 The object can be more finely crushed.

And as the second rib tuck 250 is formed in the lower part of the juicing drum 200 , the juice target is smoothly moved from the upper part of the juicing drum 200 to the lower part by the separating screw 300 and the first rib tuck 260 . While being transferred, the pressure due to the juice target residue of the juice drum 200 and the separation screw 300 is gradually increased. The juice extracted from the juice target by this pressure is separated through the gap a formed between the slit 15 of the first module 10 of the separation screw 300 and the rib 21 of the second module 20. It may be introduced into the screw 300 and smoothly discharged.

A third rib tuck 270 shorter than the first rib tuck 260 and longer than the second rib tuck 250 may be formed between the first rib tuck 260 or between the second rib tuck 250 . have.

The third rib tuck 270 performs a function of assisting the role of the first rib tuck 260 . That is, if the installation interval of the first rib jaws 260 is too far, the juice target may not smoothly descend to the lower part of the juice drum 200, so that the first rib jaws (260) are placed between the first rib jaws (260). 260), and by forming the third rib tuck 270 longer than the second rib tuck 250, the juice target can be smoothly moved to the lower portion of the juicing drum 200.

Referring to FIG. 10 , the relationship between the juice drum 200 and the separation screw 300 will be described.

As shown in Figure 10, the upper inner peripheral surface of the juice drum 200 is formed to be inclined at a certain angle (A) with respect to the vertical line. That is, the diameter of the inner circumferential surface of the juice drum 200 is formed to decrease from the top to the bottom.

The protrusion height of the first rib tuck 260 formed on the inner circumferential surface of the juice drum 200 is gradually lowered from the upper part to the lower part, so that it is formed to be inclined in the vertical direction. At this time, the outer surface of the first rib tuck 260 is formed to be inclined at a predetermined angle (B) with respect to the vertical line. That is, the first rib tuck 260 is formed to be inclined toward the center of the juice drum 200 from the top to the bottom. At this time, as shown in the enlarged view on the right of FIG. 10 , the outer surface of the first rib tuck 260 coincides with the straight line formed by the screw spirals 13 and 29 formed in the vertical direction of the separating screw or is close to each other. may be formed in parallel. That is, the first rib jaw 260 may be formed to coincide with or parallel to the outer shape of the separation screw 300 so as to contact or nearly contact the screw spirals 13 and 29 of the separation screw 300 .

And the outer peripheral surface of the separation screw 300 accommodated in the juice drum 200 is formed to be inclined at a predetermined angle (C) with respect to the vertical line. That is, the diameter of the outer circumferential surface of the separation screw 300 may be formed to decrease from the top to the bottom.

At this time, it is preferable that the angle B formed by the outer surface of the first rib tuck 260 with the vertical line and the angle C formed by the outer circumferential surface of the separation screw 300 with the vertical line are the same as described above. That is, the outer surface of the first rib jaw 260 and the outer peripheral surface of the separation screw 300 are formed to coincide or substantially coincide in parallel.

At this time, it is preferable that the inner surface of the juice drum 200 is formed so that the distance from the separation screw 300 increases from the upper part to the middle part as shown in the right enlarged view of FIG. 10 . In addition, it may be formed so that the distance from the separation screw 300 increases from a predetermined position in the middle of the juice drum 200 toward the lower portion. This is because the juice object is pulverized from the upper part to the middle part of the juice drum 200 and the size becomes smaller and smaller, so that the distance from the separation screw 300 is close to a predetermined position in the middle part, and the movement of the residue toward the lower part again In order to secure a space, the separation screw 300 may be formed to be farther apart. At this time, as shown in another enlarged view on the right, the inner surface of the juice drum 200 may be formed to maintain a certain distance with the separation screw 300 from the middle part to the lower part.

As described above, according to the embodiment of the present invention, the configuration is simple and manufacturing cost can be reduced by eliminating the conventional mesh drum. In addition, it is easy to clean by removing the conventional mandrum, and it is possible to improve the juice extraction efficiency.

Hereinafter, various modifications of the separation screw described with reference to FIGS. 11 to 23 will be described.

11 and 12 are exploded perspective views according to a first modification of the separation screw, FIGS. 13 and 14 are exploded perspective views according to a second modification of the separation screw, and FIG. Figure 16 is an exploded perspective view according to a third modified example of the separation screw, Fig. 17 is a combined perspective view of Fig. 16, Fig. 18 is a cross-sectional view taken along IV-IV' of Fig. 17, and Fig. 19 is an exploded view An exploded perspective view according to a fourth modified example of the screw, FIG. 20 is a combined perspective view of FIG. 19 , FIG. 21 is a cutaway perspective view of the juice drum to which the separation screw of FIG. 20 is applied, and FIGS. 22 and 23 are a fifth of the separation screw It is an exploded perspective view according to a modified example.

According to the modified example shown in FIGS. 11 and 12 , a protruding first gap maintaining step 50 may be formed on the upper side surface of the slit 15 . In addition, a protruding second gap maintaining step 55 may be formed on the lower side of the rib 21 . The size of the gap (a) between the slit 15 and the rib 21 may be changed while the separation screw 300 is rotated during the juicing process. The size of the gap (a) formed between the slit 15 and the rib 21 can be maintained constant even during the juice extraction process by the first gap maintaining step 50 and the second gap maintaining step 55 .

According to the modified example shown in FIGS. 13 and 14 , a key protrusion 40 is provided on the lower surface of the upper surface of the first module 10 in order to fix the coupling position between the first module 10 and the second module 20 . is formed, and a key groove 45 into which the key protrusion 40 is inserted may be formed on the upper surface of the second module 20 . By fitting the key protrusion 40 into the key groove 45 , the coupling position, rotation, and tilting of the first module 10 and the second module 20 can be restricted.

In addition, as shown in FIGS. 13 and 14 , a support part 31 protruding from the outer surface may be formed on the outer surface of the second body 22 . The protrusion height of the support part 31 is smaller than the protrusion height of the rib 21, and the support part 31 is formed with the inner surface of the first body 14 when the first module 10 and the second module 20 are combined. The outer surfaces of the second body 22 are in close contact with each other to support the strong pressure in the radial and circumferential directions generated when the residue and the juicer are squeezed, and to prevent the noise generated when the separation screw 300 is rotated. do.

15 shows various embodiments of the support part 31 . First, as shown in (a), the support part 31 is formed to protrude from the outer surface of the second body 22 and may be configured to contact the inner surface of the first body 14, and vice versa (b) It may be formed to protrude from the inner surface of the first body 14 as shown in. In addition, as shown in (c) and (d), the first support part 31a protruding from the inner surface of the first body 14 and the second support part protruding from the outer surface of the second body 22 ( 31b), so that one side of the first support part 31a and the second support part 31b may be in contact with each other. That is, the first support portion 31a is formed to contact the outer surface of the second body 22 and the second support portion 31b is formed to contact the inner surface of the first body 14 , and at the same time, the first support portion 31a and the side surfaces of the second support part 31b may be formed to contact each other as shown in (c) or (d). As described above, since both side surfaces of the first support part 31a and the second support part 31b are formed to contact each other, it is possible to more stably support the strong pressure in the circumferential direction. In addition, as shown in (e), the insertion groove 32 is formed on the inner surface of the first body 14 so that the end of the support part 31 protruding from the outer surface of the second body 22 is inserted. It may be combined in a fitting form.

In this embodiment, it is described that the support part 31 is integrally protruded from the inner surface of the first body 14 or the outer surface of the second body 22, but the first body 14 and the second body ( 22) may be formed as a separate member inserted between. Furthermore, the shape of the support part 31 is not limited to the above-described shape, and if it is interposed between the inner surface of the first body 14 and the outer surface of the second body to support each other, it can be modified in various ways. have.

In addition, the contact portion of the support part 31 may be formed of a pad made of silicone or elastic material to absorb pressure and further reduce noise caused by vibration.

According to the modified example shown in FIGS. 16 to 18 , in the longitudinal direction edge portion of the upstream side of the slit 15 of the first module 10 with respect to the rotation direction of the separation screw 300 , the slit 15 is formed. One inclined surface 14 - 1 may be formed. In addition, the rib 21 of the second module 20 may be formed with a second inclined surface 21-1 obtained by cutting a downstream edge with respect to the screw rotation direction.

For example, as shown in FIG. 18 , when the separation screw 300 rotates counterclockwise and the juice target moves clockwise, the first inclined surface 14-1 is the right edge of the slit 15 . formed in the portion, the second inclined surface 21-1 may be formed in the left edge portion of the rib (21).

When the separation screw 300 rotates, the juice target moves while being pulverized between the separation screw 300 and the juice drum 200. Since the moving speed of the juice target is slower than the rotation speed of the separation screw 300, The juice target is relatively moved in a direction opposite to the rotation direction of the separation screw 300 . Accordingly, the rotation direction of the separation screw 300 and the movement direction of the juice target are opposite directions.

In this way, when the first inclined surface 14-1 is formed on the edge of the slit 15 and the second inclined surface 21-1 is formed on the rib 21, the slit 15 of the first module 10 is formed. ) and the rib 21 of the second module 20 can prevent the juice target from being caught in the gap (a).

Specifically, when the separation screw 300 rotates counterclockwise, the residue of the juice target positioned between the screw 300 and the juice drum 200 moves in a relatively clockwise direction. When the residue moves in the clockwise direction, it moves while riding over the rib and the first inclined surface, and is compressed and crushed by the step between the right edge of the rib 21 and the first inclined surface 14-1, and the rib 21 It is prevented that debris is caught in the gap (a) between the right edge of the and the edge between the first inclined surface 14-1. In addition, the residue is compressed and crushed by the step of the right second inclined surface 21-1 of the rib 21 and the left edge of the slit 15, and the right second inclined surface 21- of the rib 21 is It is prevented that debris is caught in the gap (a) between 1) and the left edge of the slit (15).

19 to 21 , in order to easily separate the first module 10 and the second module 20 , a separation handle 370 may be formed on the inner circumferential surface of the second module 20 . can

The separation handle 370 is formed to protrude inward in the radial direction from the lower end of the inner circumferential surface of the second module 20 . Specifically, the separation handle 370 may be formed in a flat plate shape in the vertical direction, and the width thereof may be narrowed from the inner circumferential surface of the second module 20 toward the inner side in the radial direction. And the separation handle 370 may be formed to be symmetrical.

If necessary, a plurality of separation handles 370 may be formed on the inner circumferential surface of the second module 20 . Preferably, a pair of separation handles 370 may be formed on the inner circumferential surface of the second module 20 , and the pair of separation handles 370 may be formed at positions facing each other.

As described above, when the separation handle 370 is formed on the inner circumferential surface of the second module 20 , the user can easily separate the first module 10 and the second module 20 . For example, the user grabs the upper part of the first module 10 with one hand and hangs the separation handle 370 with the other hand to move the first module 10 and the second module 20 in opposite directions. can be separated into Accordingly, the user can easily separate the second module 20 from the first module 10 using the separation handle 370 .

In addition, an insertion groove 371 is concavely formed in the center of the separation handle 370 , and a brush 380 formed of an elastic material may be coupled to the insertion groove 371 . The brush 380 may include a brush body 381 inserted into the insertion groove 371 , and brush wings 383 extending downward from the brush body 381 . When the brush 380 is inserted into and coupled to the insertion groove 371 of the separation handle 370 , the brush body 381 may be elastically deformed and coupled to the insertion groove 371 in an interference-fitting manner.

As shown in FIG. 21 , the brush 380 sweeps away the juice accumulated in the juice discharge groove 297 so that the juice temporarily accumulated in the juice discharge groove 297 can smoothly move to the juice discharge port 220 . do To this end, the lower portion of the brush blade 383 may be disposed to be spaced apart from the bottom surface of the juice discharge groove 297 by a predetermined distance, or if necessary, the lower portion of the brush blade 383 may be located at the bottom of the juice discharge groove 297 It may be arranged so as to come into contact with the surface.

22 to 23 , the second body may be formed of an annular flange 24 for fixing the upper side of the rib 21 .

Various embodiments of the separation screw 300 have been described with reference to the above drawings. The first module 10 and the second module 20 are separably coupled and the slit 15 formed in the first module 10 and the rib formed in the second module 20 and inserted into the slit 15 If the external liquid is introduced into the separation screw 300 through the gap (a) between the slit 15 and the rib 21 in the form of (21), the shape of the separation screw 300 refers to the drawing It is not limited to the contents described in the drawings, and various modifications can be made including the shape and position of the slit and the rib.

Hereinafter, a process of discharging juice and debris separated by a separation screw according to an embodiment of the present invention will be described in detail with reference to FIG. 24 .

24 is a cutaway perspective view of the juice drum to which the separation screw of the present invention is applied.

The left cross-section of FIG. 24 is expressed so that the passage through which the filtered residue is discharged after being juiced between the separation screw 300 and the juice drum 200 is well understood, and the right-side cross-section is compressed into the space inside the separation screw 300 while The juice discharge path through which the filtered juice is discharged is clearly shown.

In addition, a drum hole 240 is formed in the center of the inner bottom surface of the juice drum 200 . The drum hole 240 may include a waterproofing packing 261 on the inner circumferential surface, and may include a waterproofing cylinder 280 protruding and inserted into the inner central space of the separating screw 300 according to design needs. A guide jaw 282 on which the lower ring 390 of the separation screw 300 can be seated is formed around the drum hole 240 . The guide jaw 282 is formed at a constant height from the bottom surface of the juice drum 200 so as to be inserted into the inner circumferential surface of the lower ring 390 of the separating screw 300 , and a guide groove 291 is formed on the upper surface of the guide jaw 282 . can do. In this way, the juice drum is fixedly supported and the residue does not enter the drive shaft.

A juice discharge groove 297 is formed on the bottom surface of the juice drum 200 radially outward of the drum hole 240 , and the juice discharge groove 297 communicates with the juice discharge port 220 . And a residue discharge groove 298 is formed on the outer side of the juice discharge groove 297 in the radial direction, and the residue discharge groove 298 communicates with the residue discharge port 230 .

The juice extracted by the interaction between the separation screw 300 and the juice drum 200 is a gap (a) formed between the slit 15 of the first module 10 and the rib 21 of the second module 20 moves between the first module 10 and the second module 20 through the It moves downward through the space between the outer peripheral surfaces. Thereafter, it is moved to the inside of the separation screw 300 through the juice discharge hole 28 formed in the second body 22 of the second module 20 . The juice moved to the inside of the separation screw 300 through the juice discharge hole 28 flows into the juice discharge groove 297 formed in the circumferential direction at the center of the bottom surface of the juice drum and is collected. The juice collected in the juice discharge groove 297 may be discharged through the juice discharge port 220 .

On the other hand, the residue other than the juice extracted by the interaction between the separation screw 300 and the juice drum 200 moves downward along between the outer circumferential surface of the separation screw 300 and the inner circumferential surface of the juice drum 200, and the juice drum While flowing along the residue discharge groove 289 formed on the bottom surface of the 200, the residue is discharged to the outside through the discharge port 230.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improved forms of the present invention are also provided by those skilled in the art using the basic concept of the present invention as defined in the following claims. is within the scope of the right.

According to an embodiment of the present invention, the configuration is simple and manufacturing cost can be reduced by eliminating the conventional mesh drum.

In addition, it is easier to clean than a conventional mandrum, and it is possible to improve the juice extraction efficiency.

In addition, since the problem of clogging of the manghole in the conventional mandrel drum is fundamentally solved, there is no need for a brush required for a conventional vertical juicer, and various parts for driving the brush are not required.

10: first module
11: screw shaft
12: screw hole
13, 29: screw helix protrusion
14: first body
14-1: first slope
15: slit
16: first step
20: second module
21: rib
21-1: second slope
22: second body
23: second step
24: flange
25: seating groove
26: magnet receiving part
27: top surface
28: juice discharge hole
30: through hole
31: support
100: Hopper
200: juice drum
220: juice outlet
230: garbage outlet
240: drum hall
260: first rib tuck
250: second rib tuck
270: third rib tuck
280: waterproof cylinder
297: juice discharge groove
298: waste discharge groove
300: separation screw
370: release handle
371: insertion groove
380: brush
381: brush body
383: brush wings
a: break

Claims (32)

A separation screw to which the first module and the second module are detachably coupled,
The first module is
A first body having an open lower portion, a hollow is formed therein, and a plurality of slits formed in the longitudinal direction along the circumference of the first body, and a screw hole is formed in the inner center,
The second module is
A second body coupled to the first body, and a plurality of ribs formed in a shape corresponding to the slit of the first module on the outer surface of the second body, an annular flange is formed on the upper side,
A screw spiral is formed on the outer surface of at least one of the first body and the second body,
When the rib is inserted into the slit, a gap is formed in the longitudinal direction between the rib and the slit,
A separation screw through which the juice flows into the inside through the gap. According to claim 1,
A separation space is formed between the inner peripheral surface of the first module and the outer peripheral surface of the second module,
The separation space is a separation screw that becomes wider toward the lower side. 3. The method of claim 2,
A separation screw in which a support portion is formed to protrude from an inner surface of the first body or an outer surface of the second body. 4. The method of claim 3,
A separation screw wherein the protrusion height of the support part is smaller than the protrusion height of the ribs. 4. The method of claim 3,
When the support portion is coupled to the first module and the second module, a separation screw for bringing the inner surface of the first body and the outer surface of the second body into close contact with each other. 4. The method of claim 3,
The support part is a separation screw integrally formed with the inner surface of the first body or the outer surface of the second body. 4. The method of claim 3,
The support part is a separation screw formed as a separate member inserted between the first body and the second body. 4. The method of claim 3,
A separation screw in which the contact portion of the support is formed of a pad made of silicone or elastic material. 3. The method of claim 2,
a first support protruding from the inner surface of the first body; and
Further comprising a second support portion protruding from the outer surface of the second body,
A separation screw in which the first support part and the second support part contact each other. 3. The method of claim 2,
A separation screw having an end of the support part protruding from the outer surface of the second body fitted into an insertion groove formed in the inner surface of the first body. According to claim 1,
The separation screw is formed such that the gap becomes larger in the radial direction, or the gap becomes smaller toward the lower side in the longitudinal direction of the separation screw. 12. The method of claim 11,
Separation screw formed so that the width of the slit increases toward the inner side in the radial direction so that the gap becomes larger toward the inner side in the radial direction. 13. The method of claim 12,
The separation screw is formed such that the upper gap is formed wide and the lower gap is formed narrowly, so that the gap becomes smaller toward a lower side in the longitudinal direction of the separation screw. 12. The method of claim 11,
A first gap maintaining step is formed on the upper side of the slit,
A separation screw in which a second gap maintaining step is formed on the lower side of the rib. 12. The method of claim 11,
A key protrusion is formed on the lower surface of the upper surface of the first module,
A separation screw in which a key groove into which the key protrusion is inserted is formed on the upper surface of the second module. According to claim 1,
A separation screw having a separation handle formed on an inner circumferential surface of the second module. 17. The method of claim 16,
The separation handle is a separation screw formed to protrude inward in the radial direction from the lower end of the inner peripheral surface of the second module. 18. The method of claim 17,
The separation handle is formed in a flat plate shape in the vertical direction, and the separation screw is formed such that the width becomes narrower from the inner peripheral surface of the second module toward the inner side in the radial direction. 17. The method of claim 16,
The separation handle is a separation screw formed in plurality on the inner peripheral surface of the second module. 20. The method of claim 19,
The separation handle is a separation screw that is formed in a pair on the inner peripheral surface of the second module. 21. The method of claim 20,
The separation handle is a separation screw formed in a position facing each other. 17. The method of claim 16,
A separation screw having an insertion groove concavely formed in the center of the separation handle. 23. The method of claim 22,
A separation screw to which a brush made of an elastic material is coupled to the insertion groove. 24. The method of claim 23,
the brush is
a brush body inserted into the insertion groove;
Brush blades extending downward from the brush body
Separation screw comprising a. 25. The method of claim 24,
When the brush is coupled to the insertion groove of the separation handle,
A separation screw coupled to the insertion groove in a force-fitting manner while the brush body is elastically deformed. According to claim 1,
The first module has a plurality of first slits formed by a plurality of first rods,
The second module is detachably coupled to the first module, and a plurality of second slits are formed by a plurality of second rods,
When the first module and the second module are coupled, the second rod is inserted into the first slit to form a predetermined gap,
The second slit is a separation screw whose inner circumferential surface is entirely closed or partially open. 27. The method of claim 26,
The gap is a separation screw that becomes wider toward the center in a radial direction. 28. The method of claim 27,
A separation screw in which the width of the first rod becomes narrower toward the center in the radial direction. 29. The method of claim 28,
A separation screw having a cross-section of the first rod having a semicircular, elliptical, or trapezoidal shape. 27. The method of claim 26,
A separation screw having an open lower inner circumferential surface of the second slit. 27. The method of claim 26,
A separation screw in which a juice discharge hole is formed at a lower side of the second slit. 27. The method of claim 26,
A separation screw in which the width of the first rod becomes narrower toward the center in the radial direction, so that the gap becomes wider toward the center in the radial direction.

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