JP4646542B2 - Citrus juice extraction equipment - Google Patents

Description

The present invention relates to an apparatus for squeezing and squeezing citrus fruits such as shikwasa (hirami lemon) and tankan with their skins intact.

As described in JP-A-61-173800, for juice extraction having a first set of crushing devices consisting of three rolls and a concentrator and a second set of crushing devices consisting of three rolls A crusher has been proposed.
JP 61-173800

However, although this crushing apparatus is suitable for extracting sugar millet and extracting juice, there are many problems in squeezing and squeezing citrus fruits such as seeker and tanker and cannot be applied. The first problem is that it is impossible to smoothly introduce a substantially spherical citrus between the rollers. The second problem is that it is difficult to squeeze efficiently without crushing citrus seeds. The third problem is that it is difficult for the citrus fruits to smoothly pass between the rollers without slipping.

The technical problem of the present invention is to pay attention to such a problem peculiar to citrus fruits, and smoothly introduce spherical citrus fruits between multi-stage rollers and send them to the discharge end, and the seeds are not crushed and efficiently squeezed. The object is to realize a mass-produced squeezing apparatus that is capable of juice and that can be processed smoothly.

The technical problem of the present invention is solved by the following means. Claim 1 is an apparatus in which citrus fruits pass between a metal roller and an elastic synthetic resin roller, and squeezing is performed.
By changing the distance between the center of rotation of the metal roller and the center of rotation of the synthetic resin roller and selecting it, the squeeze rate can be changed by adjusting the mutual roller gap or the initial roller gap. The citrus juice squeezing device is characterized in that it can be squeezed twice by narrowing the next time.
In this way, by changing the gap between the rotation center of the metal roller and the rotation center of the synthetic resin roller and selecting the structure, it is possible to change the squeeze rate by adjusting the gap between the rollers. If you squeeze with a large roller gap, the squeeze rate will be inferior, but you can collect only juice with less bitterness. Yes, the squeeze rate is improved. This is advantageous when it contains medicinal ingredients and is sold as a health food.
Moreover, the squeeze rate can be further improved by enlarging the roller gap at the first time and narrowing the roller gap at the next time, allowing the same raw material to pass twice and squeezing twice.

2. The distance between the rotation center of the metal roller and the rotation center of the synthetic resin roller is reduced until the metal roller bites into the synthetic resin roller. The citrus juice squeezing method described in 1.
As described above, when the metal roller is bitten into the synthetic resin roller by narrowing the distance between the rotation center of the metal roller and the rotation center of the synthetic resin roller, the metal roller is pressed more strongly. The juice becomes more reliable and the squeeze rate is improved. Since blue cutting is harder than ripe citrus fruits, it can be dealt with by deepening the amount of bite as described above.

Claim 3 is an apparatus in which citrus fruits are pressed and squeezed between the rotating rollers, and one of the rollers is made of metal and the other roller is made of an elastic resin. A citrus juice squeezing device characterized in that the interval between the rotation center of the roller and the rotation center of the resin roller can be changed.

When squeezing between rollers made of metal, citrus slips and cannot be squeezed smoothly, as in claim 3, one roller is made of metal and the other roller is made of an elastic resin. Therefore, the slippage of the citrus fruits is suppressed by the elastic action of the resin roller, and the juice can be squeezed smoothly. Moreover, since the space | interval of the rotation center of the said metal roller and the rotation center of a resin roller can be changed, the grade of squeezing can be selected easily by selection of a space | interval.

According to a fourth aspect of the present invention, in the structure having a plurality of metal rollers in front of the metal roller and the resin roller, diagonal grooves that are opposite to each other are formed on the surface of at least some of the metal rollers. The citrus juice squeezing device according to claim 3.

In this way, the metal roller has inclined grooves formed in opposite directions on the surface thereof, so that the sliding of the citrus fruits is inhibited by the inclined grooves facing in the opposite direction, and the spherical citrus fruits are smoothly wound between the rollers. Can be transported and squeezed.

In the fifth aspect, the two rollers arranged on the upper side and the three rollers arranged on the lower side are alternately arranged, and the size larger than the gap G1 between the first roller on the upper side and the first roller on the lower side is The first squeezing is performed, and the size smaller than the gap G1 has a structure in which the first squeezing is performed between the upper first roller and the lower second roller. It is a citrus juice squeezing apparatus of Claim 3 or Claim 4.

In this way, since the two rollers arranged on the upper side and the three rollers arranged on the lower side are alternately arranged, the gap between the two rollers on the upper side and the three rollers on the lower side is arranged. Means that four roller gaps G1... G4 can be formed, and squeezing can be performed four times. The citrus fruits having a size larger than the gap G1 between the upper first roller and the lower first roller perform the first pressing, and the citrus fruits having a size smaller than the gap G1 are separated from the upper first roller. Since the first squeezing is performed with the second roller on the side, the first squeezing that requires a large squeezing force is dispersed in two places, and it is possible to prevent an unreasonable force from acting on the device. .

According to a sixth aspect of the present invention, the upper second roller is made of an elastic resin, the lower third roller is made of metal, and the lower third roller bites into the upper resin roller. It is set as the structure, It is a citrus juice squeezing device in any one of Claim 3-5 characterized by the above-mentioned.

Thus, since it was set as the structure where the lower metal 3rd roller bites into the upper elastic resin roller, it is possible to sufficiently squeeze citrus fruits and increase the squeeze rate. Moreover, in the citrus seed portion, the resin roller is retracted by elasticity and escapes the seed, so that it is possible to effectively prevent the seed from being crushed and the bitter component from being mixed into the juice. In addition, the resin roller is squeezed in two gaps G3 and G4 between the metal roller r3 at the outlet end and the metal roller r2 in the preceding stage, and two places are provided by one resin roller. This means that the squeezed portion of the citrus is preventing slippage.

According to a seventh aspect of the present invention, the lower first roller has a larger diameter than the upper first roller, and the upper first roller has a larger diameter than the rear end surface of the lower first roller. The front end face is shifted rearward so that a gap G0 is formed even when viewed from above, and the top face of each lower roller is arranged so as to gradually fall forward. A citrus juice squeezing device according to any one of claims 3 to 6.

In this way, the lower first roller has a larger diameter than the upper first roller, and the front end surface of the upper first roller is rearward of the rear end surface of the lower first roller. Even when viewed from above, the gap G0 is formed so that the citrus fruits can easily fall into the gap G0 and be smoothly introduced into the G1 between the rollers. The problem of difficult introduction between rollers is eliminated. Also, as described above, citrus fruits larger than the gap G1 are first compressed at this interval G1, and small citrus fruits that have passed through the interval G1 are first compressed at the second narrower gap G2. Done.

As described in claim 1, the structure can be selected by changing the interval between the rotation center of the metal roller and the rotation center of the synthetic resin roller, and the squeeze rate can be changed by adjusting the gap between the rollers. Therefore, if you squeeze with a large roller gap, the squeeze rate will be inferior, but only juice with less bitterness can be collected. Yes, the squeeze rate is improved. Moreover, the squeeze rate can be further improved by enlarging the roller gap at the first time and narrowing the roller gap at the next time, allowing the same raw material to pass twice and squeezing twice.

As described in claim 2 , when the metal roller is bitten into the synthetic resin roller by narrowing the interval between the rotation center of the metal roller and the rotation center of the synthetic resin roller, the metal roller is more strongly compressed. Therefore, squeezing becomes more reliable and the squeezing rate is improved.

Since one roller is made of metal and the other roller is made of an elastic resin, the slippage of citrus fruits is suppressed by the elastic action of the resin roller, and the juice is squeezed smoothly. it can. Moreover, since the space | interval of the rotation center of the said metal roller and the rotation center of a resin roller can be changed, the grade of squeezing can be selected easily by selection of a space | interval.

According to the fourth aspect of the present invention, the metal roller has inclined grooves formed in opposite directions on the surface thereof, so that the sliding of the citrus fruits is inhibited by the inclined grooves formed in the opposite direction, and the spherical citrus fruits are smoothly rolled. It can be rolled in between and transferred and squeezed.

Since the two rollers arranged on the upper side and the three rollers arranged on the lower side are alternately arranged as in claim 5, the two rollers on the upper side and the three rollers on the lower side In between, four roller gaps G1... G4 are formed, and four pressings can be performed. The citrus fruits having a size larger than the gap G1 between the upper first roller and the lower first roller perform the first pressing, and the citrus fruits having a size smaller than the gap G1 are separated from the upper first roller. Since the first squeezing is performed with the second roller on the side, the first squeezing that requires a large squeezing force is dispersed in two places, and it is possible to prevent an unreasonable force from acting on the device. .

Since the lower metal third roller bites into the upper elastic resin roller as in claim 6, the citrus fruits can be sufficiently squeezed to increase the squeeze rate. Moreover, in the citrus seed portion, the resin roller is retracted by elasticity and escapes the seed, so that it is possible to effectively prevent the seed from being crushed and the bitter component from being mixed into the juice. In addition, the resin roller is squeezed in two gaps G3 and G4 between the metal roller r3 at the outlet end and the metal roller r2 in the preceding stage, and two places are provided by one resin roller. This means that the squeezed portion of the citrus is preventing slippage.

The front end surface of the upper first roller is larger than the rear end surface of the lower first roller and the lower first roller has a larger diameter than the upper first roller. Since the gap G0 is formed even when viewed from the top by shifting the back, the citrus fruits can easily fall into the gap G0 and be smoothly introduced into the gap G1, and slip or jump This eliminates the adverse effect that it is difficult to introduce citrus fruits between the rollers. In addition, as described above, citrus fruits larger than the gap G1 are first compressed at this interval G1, and small citrus fruits that have passed through the interval G1 are first compressed at the next narrower gap G2. Done.

Next, an embodiment of how the citrus juice squeezing device according to the present invention is actually embodied will be described. FIG. 1 is a side view showing a roller arrangement of a citrus juice squeezing apparatus according to the present invention. R1 and R2 are an upper first roller and a second roller, respectively. In this embodiment, the second roller is suitably made of an elastic synthetic resin such as a silicone resin.

r1, r2, and r3 are a lower first roller, a second roller, and a third roller, respectively. The lower first, second, and third rollers r1, r2, and r3 and the upper first roller R1 are made of metal, for example, stainless steel. Then, as will be described later, diagonal grooves with respect to the center of rotation are formed in two rows on the left and right sides in opposite directions.

And 1st roller R1, 2nd roller R2 arrange | positioned at the upper side, and 1st roller r1, 2nd roller r2, and 3rd roller r3 arrange | positioned at the lower side are arrange | positioned alternately. As a result, four gaps G1, G2, G3, and G4 are formed between the upper and lower rollers. That is, a gap G1 between the upper first roller R1 and the lower first roller r1 is formed, a gap G2 between the upper first roller R1 and the lower second roller r2 is formed, and the upper second roller A gap G3 between the roller R2 and the lower second roller r2 is formed, and a gap G4 between the upper second roller R2 and the lower third roller r3 is formed. Then, the upper rollers R1 and R2 are rotated left as indicated by an arrow a1, and the lower rollers r1, r2, and r3 are rotated reversely, that is, rotated clockwise as indicated by an arrow a2.

The dimensions of the gaps G1 to G4 between the upper and lower rollers are, for example, 28 mm for the first gap G1, 13 mm for the second gap G2, 4.5 mm for the third gap G3, and minus 3 mm for the fourth gap G4, for example. In addition, the gaps G1 to G4 are gradually reduced. Note that minus 3 mm means that the lower metal roller r3 bites into the upper resin roller R2 by 3 mm.

Now, when citrus f such as a seeker is introduced into the hopper 1, it enters the gap G1 between the upper and lower first rollers R1 and r1. And the citrus fruit smaller than the space | interval G1 passes along this clearance gap G1, and the first pressing is performed by the following 2nd clearance gap G2. Thus, since the gap G1 is the most open and the gaps G1... G4 are inclined forward and downward, it is possible to prevent the citrus fruits from rolling around the same place without being caught between the rollers. And it sends in order of the following 3rd clearance gap G3 and 4th clearance gap G4, and pressing is performed repeatedly.

Citrus fruits larger than the first gap G1 are caught in the gap G1 and passed through the first squeezing, and then passed through the second and subsequent gaps G2 → G3 → G4 in order. The Thus, citrus fruits larger than the first gap G1 and having a large amount of fruit juice are advantageous because they are squeezed only once more than the small-diameter citrus fruits that pass through the gap G1.

Further, the outer diameter of the lower first roller r1 is set to a large diameter of 76 mm with respect to the outer diameter of 48 mm of the upper first roller R1, and from the rear end surface of the lower first roller r1. Also, the front end surface of the upper first roller R1 is shifted rearward so that the gap G0 is formed when viewed from above. Therefore, the citrus fruits f in the hopper 1 are easily guided to the first gap G1 between the upper first roller R1 and the lower first roller r1.

The line L connecting the top surfaces of the first, second, and third rollers r1, r2, and r3 on the lower side is preferably inclined 15 to 30 degrees forwardly downward. The device shown is tilted 20 degrees. In this way, the top surfaces of the lower rollers r1, r2, r3 are gradually lowered forward, so that the citrus f is smoothly fed between the upper and lower rollers and sequentially fed, and the gap G1 → G2 → G3. → Passes smoothly in the order of G4. Juice generated while the citrus fruits are passed through and squeezed flows down between the front and rear rollers r1, r2, and r3, and is received by the lower tray, guided to the outlet, and collected. The

A gap of 0.2 mm is provided between the lower rollers r1 and r2, and a gap of 0.2 to 0.5 mm is provided between the rollers r2 and r3. There is also a 0.2 mm gap between the upper rollers R1 and R2.

The upper second roller R2 is made of an elastic resin, while the lower third roller r3 is made of metal. The lower second roller r2 is also made of metal. In this way, since the roller R2 made of a synthetic resin having a small coefficient of friction and easy to bite by citrus faces the two metal rollers r2 and r3 on the lower side, the citrus slides in the gaps G3 and G4. Can be effectively suppressed and squeezed smoothly.

Furthermore, the interval between the rotation center of the upper synthetic resin roller R2 and the rotation center of the lower metal roller r3 can be changed by a mechanism described later. Therefore, if the juice is squeezed by increasing the interval between the rotation centers and enlarging the gap between the rollers, the squeeze rate is inferior, but it is suitable for collecting only juice with less bitterness. On the other hand, if the interval between the rotation centers is narrowed and the roller gap is narrowed and the juice is squeezed, bitter ingredients such as pericarp may be mixed, but the squeeze rate is improved. This is advantageous when it contains medicinal ingredients and is sold as a health food. Alternatively, the squeezing rate can be further improved by first squeezing with a larger interval between the rotation centers, and then reducing the interval between the rotation centers and squeezing the same raw material twice.

Moreover, not only can the interval be adjusted, but if the interval is narrowed until the lower third roller r3 bites into the upper second roller R2, it will be squeezed more strongly, so the juice will be more reliable and the juice rate will be improved To do. Since blue cutting is harder than fully citrus fruits, it can be dealt with by narrowing the gap G4 or deepening the amount of bite. Moreover, since the upper second roller R2 is made of a synthetic resin and rich in elasticity, even if there is a seed, it can bite into the upper roller of the synthetic resin and evacuate, the seed is crushed, and the bitter component is mixed in the juice Can be prevented.

In the above-described roller arrangement, V-shaped grooves 2 that are obliquely reversed as shown in FIG. 2 are formed on the surfaces of the metal rollers R1, r1, r2, and r3 to prevent citrus slipping. FIG. 2 is a plan view of the final metal roller r3. The anti-slip groove 2 is not parallel to the center of rotation of the roller r3 but is tilted by about 2 to 5 degrees (the illustrated apparatus is 2.6 degrees). The left half and the right half are tilted in opposite directions. As a result, slipping of citrus fruits is more effectively suppressed, and the citrus fruits can be squeezed reliably because they are smoothly wound and sent.

The groove width of the embodiment is about 6 mm and the depth is about 0.5 mm. However, there is no problem if the groove width is 3 to 9 mm and the depth is 0.2 to 7 mm. Is done. The inclined V-groove 2 may be provided only on a part of rollers that are particularly important or particularly slippery, but it is needless to say that the inclined V-groove 2 is preferably provided on all metal rollers.

FIG. 3 is a plan view of the second roller R2 made of synthetic resin, and has a structure in which an outer skin 4 made of silicone resin is formed on a cylindrical body on the outer surface of a stainless steel core rod 3. The thickness t of the resin roller portion 4 is 20.5 mm in the illustrated apparatus. However, if the thickness t is increased to about 10 to 30 mm, the elasticity can be realized so as not to crush the seeds.

FIG. 4 is a roller side view showing the entire squeezing apparatus equipped with each of the above rollers, and the bearing 5 of the last metal roller r3 facing the second roller R2 made of synthetic resin is in the vertical direction. It can be moved. For this purpose, the left and right side surfaces of the bearing 5 are cut into parallel vertical surfaces, and the guide blocks 6 and 7 are fixed on both sides thereof.

And the worm gear 9 which inserted and fixed the male screw rod 8 connected to the lower part of the bearing 5 is meshed with the worm 10 in the horizontal direction. Therefore, by rotating the knob fixed to the end of the worm 10 to rotate the worm gear 9 at a low speed, the male screw rod 8 rotates at a low speed, and the bearing 5 can be moved up and down little by little. The distance P4 from the rotation center of the roller R2 and the amount of biting into the resin roller surface can be finely adjusted. In addition, since the vertical movement mechanism of the metal roller r3 as shown in the figure is provided on the back of the apparatus and the sprockets 11 fixed to the male screw rod 8 are connected by a chain, both ends of the shaft of the roller r3 are simultaneously connected. Needless to say, it can move up and down.

The juice that is squeezed between the upper and lower rollers flows down between the lower rollers r1, r2, and r3, and the front and rear, but the squeezed residue is sent between the upper and lower rollers and the last roller R2 · r3 It is discharged from between. However, there are cases where squeezed debris drops from between the lower rollers before the last discharge section, and there are cases where only the seeds fall separately.

Therefore, the receiving nets S1 and S2 for receiving such pomace and seeds are provided in two stages, and guide means are provided so that they can be taken in and out in the directions of the arrows, respectively. Then, when squeezed residue or seeds accumulate in the upper receiving net S1, it is only necessary to remove and clean them and then mount them again. While the upper receiving network S1 is exchanged, there is no particular problem because it accumulates in the lower receiving network S2. The squeezed liquid passes through the nets S1 and S2, is collected in the lower receiving tray, and is discharged to the squeezed liquid receiving tank.

However, when a large amount of juice is continuously squeezed, it is not efficient to insert and remove the receiving nets S1 and S2 alternately. Therefore, a conveyor structure as shown in FIGS. 5 and 6 is preferable. That is, a mesh-type conveyor 12 made of a net is used so that the juice can pass through. Reference numerals 13 and 14 denote rollers that are inserted into both ends of the mesh conveyor 12 to support and rotate the mesh conveyor 12. The roller 13 is connected to the motor M by a chain 15. Therefore, the mesh conveyor 12 is driven by the motor M in the direction of the arrow a3, can receive the squeezed residue that has fallen from between the squeezing rollers, can be discharged in the direction of the arrow a4, and can be stored in the residue storage container 16. The squeezed liquid falls through the mesh conveyor 12 and is collected in a tray. And it discharges | emits with the collection pipe | tube 17 shown in FIG. In addition, as the mesh conveyor 12, it is good to use the wire mesh which bends flexibly and smoothly.

FIG. 7 is a side view of the roller shown in correspondence with FIG. 1 and, unlike FIG. 1, an impeller 18 is added. The impeller 18 has a structure in which three blade plates 20 are fixed in a radial direction on the outer periphery of a horizontal rotating shaft 19 at intervals of 120 degrees. The first roller interval G1 into which the citrus fruits enter is between the upper first roller R1 and the lower first roller r1, but the position facing the upper upper first roller R1, that is, the lower side The impeller 18 is disposed at a position above the first roller r1. And the space | interval of the upper 1st roller R1 used as the first entrance of citrus and the impeller 18 is made larger than the clearance gap G1 of the upper 1st roller R1 and the lower 1st roller r1. Further, the impeller 18 rotates the citrus fruits in the direction in which the citrus fruits are fed into the first gap G1, that is, in the direction opposite to the upper first roller R1 facing the citrus fruits.

As a result, the impeller 18 is disposed on the upper side of the first roller r1 on the lower side of FIG. Therefore, the citrus fruits f put in the hopper 1 can be smoothly fed into the first gap G1 by the right rotation of the impeller 18 and the left rotation of the upper first roller R1. Therefore, it is particularly effective when squeezing large citrus fruits larger than a seeker such as a tankan. Thus, since citrus is smoothly and reliably sent between pressing rollers, citrus can be squeezed and squeezed continuously and efficiently.

In the illustrated example, the impeller 18 is disposed on the upper side of the left first roller r1, but when the right first roller R1 is lower than the left first roller r1, the upper side of the lower roller R1. The impeller 18 is disposed on the side.

According to the apparatus having the structure and dimensions as described above, about 20 kg of seeker can be squeezed per minute, and about 1.2 tons can be squeezed per hour. If the upper and lower rollers are made thicker or the length in the left-right direction is increased, the squeezing ability can be further improved.

As described above, the squeezing device according to the present invention can squeeze and squeeze citrus fruits such as seeker and tankan smoothly between upper and lower rollers and squeeze without crushed seeds. The widespread use of this high-capacity squeezing device will enrich the management of citrus farmers, and will also activate the industry that uses citrus juice as a raw material.

It is a side view which shows the roller arrangement | positioning in the citrus juice squeezing apparatus by this invention. It is a roller top view explaining the slip prevention groove | channel of citrus fruits. It is a top view of a synthetic resin roller. It is a side view which shows the whole volume of a squeeze apparatus. It is a side view which shows a conveyor structure. It is a front view which shows a conveyor structure. It is a roller side view which shows the installation structure of an impeller.

Explanation of symbols

R1 Upper first roller R2 Upper second roller r1 Lower first roller r2 Lower second roller r3 Lower third roller G1, G2, G3, G4 Spacing (gap) between the upper and lower rollers
P4 Center distance between upper second roller and lower third roller f Citrus 1 Hopper 2 Diagonal groove 3 Core rod 4 Synthetic resin outer shell 5 Bearing 6 · 7 Guide block 8 Male screw rod 9 Worm gear 10 Worm 11 Sprocket S1 S2 Receiving net 12 Mesh conveyor 13/14 Support roller 15 Chain 17 Collection pipe 18 Impeller 19 Rotating shaft 20 Blade

Claims (7)

In an apparatus where citrus fruits pass between a metal roller and an elastic synthetic resin roller and squeeze out,
By changing the distance between the center of rotation of the metal roller and the center of rotation of the synthetic resin roller and selecting it, the squeeze rate can be changed by adjusting the mutual roller gap or the initial roller gap. A citrus juice squeezing device characterized in that it can be squeezed twice by narrowing the next time.
2. The citrus fruit according to claim 1, wherein the interval between the rotation center of the metal roller and the rotation center of the synthetic resin roller is reduced until the metal roller bites into the synthetic resin roller. Juice method.
In an apparatus in which citrus fruits pass between a plurality of rotating horizontal rollers and are squeezed and squeezed,
One of the rollers facing each other is made of metal, and the other roller is made of elastic resin, and the distance between the rotation center of the metal roller and the rotation center of the resin roller can be changed. Citrus juice squeezing device. In the structure having a plurality of metal rollers in front of the metal roller and the resin roller, diagonal grooves in opposite directions are formed on the surface of at least some of the metal rollers. Item 4. A citrus juice squeezing apparatus according to item 3. Two rollers arranged on the upper side and three rollers arranged on the lower side are arranged alternately, and the size larger than the gap G1 between the upper first roller and the lower first roller is the first compression. The size smaller than the gap G1 is configured such that the first pressing is performed between the upper first roller and the lower second roller. 4. The citrus juice squeezing apparatus according to 4. The upper second roller is made of elastic resin, the lower third roller is made of metal, and the lower third roller bites into the upper resin roller. The citrus juice squeezing device according to claim 3, claim 4, or claim 5. The lower first roller has a larger diameter than the upper first roller, and the front end surface of the upper first roller is rearward of the rear end surface of the lower first roller. The structure is such that the gap G0 is formed even when viewed from above, and the top surfaces of the lower rollers are gradually lowered forward. The citrus juice squeezing apparatus according to any one of the preceding items.

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