JP2023147139A - Fruit pulp removal device - Google Patents

Abstract

To provide a fruit pulp removal device 1 capable of surely removing a fruit pulp by using high-pressure jet water when removing the fruit pulp from pineapple leaves and extracting long fibers.SOLUTION: There is provided a fruit pulp removal device, comprising: a placing member 2 on which a pineapple leaf 6 having long fibers in-between a fruit pulp is placed; a pressing member 3 that presses the pineapple leaf 6 placed on the placing member 2 from above; and a high-pressure jet device for removing the fruit pulp. The fruit pulp removal device is configured in that: the placing member 2 and the pressing member 3 are made of mesh-like members, and the pineapple leaves 6 are sandwiched therebetween; and high-pressure jet water is jetted diagonally downward from the high-pressure jet device 4 to penetrate the pressing member 3, leaves 6, placing member 2 or the like to scrape off the fruit pulp on an underside of the leaf 6 at the same time.SELECTED DRAWING: Figure 1

Description

The present invention relates to a pulp removal device that is capable of removing pulp from, for example, pineapple leaves, Basho, banana pseudostem, etc., and extracting long fibers.

Conventionally, the following method has been used to extract long leaf vein long fibers (hereinafter referred to as "long fibers") of 50 cm or more from pineapple leaves, Basho, banana pseudostem, etc.

For example, Non-Patent Document 1 listed below proposes a method of placing leaves and pseudostems on a flat board and scraping off the pulp using a scraper made of stone or iron to extract long fibers. Furthermore, Patent Document 1 below proposes a method of manually peeling off banana long fibers.

In addition, Non-Patent Document 2 below proposes a method of scraping the pulp of pineapple with a rotating roller to extract long fibers, and Non-Patent Document 3 proposes a method of extracting long fiber bundles one by one with a fingernail. A method of extracting long fibers by tearing the fibers has been proposed.

However, in any of these methods, it was not possible to completely remove the pulp from the long fibers of the leaves and pseudostem.

On the other hand, Non-Patent Document 4 listed below proposes a method of removing pulp by applying high-pressure jet water from above to plants placed on a flat plate. Although the pulp can be removed more effectively than the above method, this method has the problem that if the water pressure is too high, the long fibers may be torn off or become entangled with each other. there were. Furthermore, depending on the method of application of high-pressure jet water, pulp may remain between the long fibers, making it impossible to obtain long fibers separated one by one. Furthermore, when removing pulp by applying high-pressure jet water, if the plant is placed on a flat plate and the high-pressure jet water is applied, only the pulp on the front side of the plant can be removed, and the pulp on the back side is removed. To remove the pulp, it is necessary to turn the fruit inside out and apply high-pressure jet water to the back side again. Moreover, when the plant is turned over and high-pressure jet water is applied to the back side, the high-pressure jet water pushes the pulp on the back side to the back, causing the pulp to enter the side from which the pulp has already been removed.

Japanese Patent Application Publication No. 2010-095805

Global Sci. Journals, Vol.7, Issue 1 (2019) pp.317-326 Int. J. of Polymer Science, Vol.2012 (doi.org/10.1155 /2015/950567) http://okinoerabu-bashofu.jp/process.html (confirmed on May 2, 2020) J. of Eng. Fibers and Fabrics, Vol.15, (2020) pp.1-7 (doi: 101177/1558925050940109)

Therefore, an object of the present invention is to provide a pulp removal device that can reliably remove pulp by using high-pressure jet water when removing pulp from natural plants to extract long fibers. .

That is, in order to solve the above-mentioned problem, the pulp removing device of the present invention includes a mounting member on which a plant having long fibers is placed between the pulps, and a plant placed on the mounting member. On the other hand, the fruit is equipped with a high-pressure jet device that sprays high-pressure jet water to remove pulp, and the mounting member is configured to allow the high-pressure jet water to pass through it.

With this configuration, when high-pressure jet water is injected onto the plant to remove the pulp, the pulp is passed through the lower side of the mounting member, and the pulp on the front side and the back side of the plant can be removed at the same time. You will be able to do this.

Moreover, in such an invention, a pressing member for pressing the plant placed on the mounting member is further provided.

With this configuration, when high-pressure jet water is applied, it is possible to prevent the plants from moving around due to the water pressure, and the pulp can be removed by stably applying high-pressure jet water. .

Further, the high-pressure jet device is configured to jet high-pressure jet water in a direction perpendicular or diagonal to the surface of the mounting member.

With this configuration, high-pressure jet water can be injected vertically or diagonally into the gap between the pulp and the long fibers, so that the pulp can be removed by scraping off the long fibers.

In addition, when such a pressing member is provided, the pulp can be removed by rotating the placing member and the pressing member and conveying the plant sandwiched between the placing member and the pressing member while jetting high-pressure jet water. Do it like this.

With this configuration, even if there are multiple leaves or pseudostems from which long fibers should be extracted, the pulp can be removed while the plants are being transported one by one, and long fibers can be extracted continuously. You will be able to do this.

Moreover, when using such a plant, one in which cracks are formed in the pulp along the direction intersecting the long fibers is used.

With this configuration, since cracks are created in the pulp in advance, high-pressure jet water can be injected into the cracked portions to remove the pulp by scraping it off.

According to the present invention, a mounting member for mounting a plant having long fibers between pulps, and a plant placed on the mounting member are injected with high-pressure jet water to remove the pulp. The high-pressure jet water is passed through the mounting member, so that when the high-pressure jet water is injected onto the plant to remove the pulp, the pulp is placed below the mounting member. It becomes possible to remove the pulp on the front side of the plant and the pulp on the back side at the same time by penetrating it to the side.

A diagram showing a pulp removing device and a crack generating device according to an embodiment of the present invention. A diagram showing a crack generation device in the same form. Diagram showing cracks in pineapple leaves A diagram showing a pulp removal device in a second embodiment A diagram showing a pulp removal device in a third embodiment A diagram showing a pulp removal device in a third embodiment

An embodiment of the present invention will be described below with reference to the drawings.

The pulp removing device 1 in this embodiment is capable of removing pulp from leaves, pseudostems, etc. of plants that have long fibers between the pulp, and extracting only the long fibers. As shown in FIG. 1, there is a placing member 2 on which a plant is placed, a pressing member 3 that presses the plant placed on this placing member 2 from above, and a plant placed between the placing member 2 and the pressing member 3. It is equipped with a high-pressure jet device 4 that sprays high-pressure jet water onto the plants that have been placed in the plant. High-pressure jet water is applied from above to the leaves of plants sandwiched between the placing member 2 and the pressing member 3, penetrating them to the bottom, and not only touching the pulp on the surface side. The pulp on the back side can also be removed at the same time. This embodiment will be described in detail below.

In this embodiment, as the plant having long fibers, a plant in which a plurality of long fibers is covered with a soft pulp containing a lot of moisture is used, such as sisal hemp of the Acanthaceae family, banana of the Bananaceae family, Examples include Manila hemp, flax, and ramie, which belong to the Cannabis family. Note that this embodiment will be explained using pineapple leaves as an example.

As such pineapple leaves 6, pineapple leaves 6, which would normally be discarded after the edible fruit is collected, are cut off from near the base of the leaf. Generally, from May to July, which is the harvest period for pineapple fruits, the length of the leaves 6 is about 50 cm to about 100 cm, and the thickness is about 2 mm. Therefore, the long pineapple leaves 6 grown in this way are used. Here, the pineapple leaves 6 used are fresh ones that contain 50% or more of water after being collected. If a pineapple leaf 6 containing a large amount of moisture is used in this way, when the pineapple leaf 6 is bent, cracks 61 (see FIG. 3) are likely to occur on the surface of the pulp, and the cracks 61 A high-pressure jet of water can be applied to help remove the pulp. On the other hand, when using pineapple leaves 6 that have been stored for a long period of time, the pineapple leaves 6 are soaked in water for a certain period of time so that the water content becomes 50% or more. However, if the water content becomes too high, cracks 61 cannot be created in the pulp by bending, so the water content is kept at about 50% to 70%.

When creating cracks 61 in such pineapple leaves 6, a crack generating device 5 as shown in FIGS. 1 and 2 is used. This crack generation device 5 is configured to have rotating bodies 51 arranged above and below each other having convex bodies 52 radially provided on the outer circumferential surface thereof, and to rotate the convex bodies 52 in a state in which they are engaged with each other. Then, the pineapple leaves 6 are sandwiched between the respective rotating bodies 51, and the pineapple leaves 6 are alternately bent by the convex bodies 52 of the rotating bodies 51 to remove the cracks 61 as shown in FIG. It is made to occur on the surface of the leaf 6 of. Note that here, the pineapple leaves 6 are sandwiched between the rotating bodies 51 provided above and below to bend them, but the pineapple leaves 6 are sandwiched between plate-shaped bodies having uneven surfaces and are bent strongly. Alternatively, cracks 61 may be formed on the surface of the pineapple leaf 6. The crack 61 is generated by such a crack generating device 5, and the long fibers are not cut by pressure from above and below.

The pulp of the pineapple leaf 6 provided with the cracks 61 is removed by the pulp removal device 1, and finally only the long fibers are extracted.

As the mounting member 2 of this pulp removing device 1, in the first embodiment shown in FIG. 1, a horizontal rail or a mesh-like member having a plurality of openings is used. When such a mounting member 2 is provided, a horizontal rail or a mesh-like member may be fixed, but here, the mesh member is made of a flexible member and is rotated by a plurality of rollers 21. pineapple leaves 6 are conveyed.

On the other hand, above the mounting member 2, a pressing member 3 is provided for pressing and fixing the pineapple leaves 6 placed on the mounting member 2 from above. The pressing member 3 is similarly made of a mesh-like member, and is rotated by a plurality of rollers 31 to press the pineapple leaf 6 with an elastic member such as a spring. Note that, here, the pineapple leaf 6 is pressed by a spring, but the pineapple leaf 6 may be pressed by the weight of the pressing member 3.

A high-pressure jet device 4 for jetting high-pressure jet water is provided inside the rotating pressing member 3. This high-pressure jet device 4 is designed to inject high-pressure jet water toward the surface of pineapple leaves 6, and is set at a speed or water pressure that allows only the pulp to be removed without cutting long fibers. Specifically, the speed of jetting from the high-pressure jet device 4 is set to 3 m/sec to 15 m/sec (preferably 7 m/sec to 12 m/sec), or the water pressure is set to 2 MPa to 15 MPa. . In addition, the shape of the jet from the high-pressure jet device 4 is set to be a straight line perpendicular to the long fibers of the pineapple leaves 6, thereby removing the pulp at once along the width direction of the pineapple leaves 6. I'm trying to make it possible. In addition, in addition to this, a cyclone nozzle or a straight nozzle may be used to spray high-pressure jet water in the front, rear, left, and right directions. Further, air bubbles having a diameter of 1 μm to 500 μm may be mixed into this high-pressure jet water, and the high-pressure jet water may be injected intermittently at intervals of 0.1 seconds to 0.5 seconds. The high-pressure jet water may be sprayed from directly above the surface of the mounting member 2, but in this case, the pulp will be pressed against the long fiber side, effectively removing the pulp. cannot be removed. Therefore, the high-pressure jet water is jetted diagonally downward from above toward the upstream side in the conveyance direction. This makes it possible to apply high-pressure jet water to the cracks 61 generated by the crack generation device 5 and gradually remove the pulp from there by scraping off the pulp. Furthermore, when jetting high-pressure jet water, there is a possibility that the mounting member 2 may be bent due to the water pressure, so a fixing member (not shown) or the like is provided below the mounting member 2 to allow the water to pass through. The mounting member 2 is placed in a position that prevents the mounting member 2 from being bent.

In addition, an air jet (not shown) is provided on the downstream side of the mounting member 2 in the conveying direction to blow off the moisture adhering between the long fibers and to float the fibers that have gotten into the gaps between the horizontal bars or the mesh. ing.

<Second embodiment>

In the first embodiment, the mounting member 2 is made of a member having a plurality of openings, such as a mesh, but a structure as shown in FIG. 4 may also be used.

This mounting member 2a includes a linear member 22 made of a wire or a pipe provided in parallel along a plane, and a cylindrical rotating member 23 whose outer peripheral surface substantially coincides with the plane of the linear member 22. A plurality of rotating members 23 are provided along the conveying direction, and each rotating member 23 is rotated in the same direction.

A plurality of grooves 23a are provided on the surface of each rotating member 23 along the outer circumferential surface, so that the long fibers from which pulp has been removed are allowed to enter between the grooves to prevent them from becoming entangled with each other. We are making it possible to transport.

On the other hand, the pressing member 3 is configured by providing a plurality of linear members 32 (indicated by broken lines in FIG. 4) such as wires and pipes, and these members are arranged in the same manner as in the first embodiment. I'm trying to make it go around. In addition, although the linear member 32 is used here, a mesh-like member may be used. The pineapple leaves 6 are sandwiched between the placing member 2a and the pressing member 3a, and the pineapple leaves 6 are brought into contact with the rotating member 23 and conveyed.

Similar to the first embodiment, the high-pressure jet device 4 is provided between the rotating pressing members 3a, and applies high-pressure jet water in an oblique direction toward the surface of the pineapple leaf 6. I am trying to remove it. The pulp scraped off in this manner falls downward through the gap between the linear member 22 and the rotating member 23 that constitute the mounting member 2a.

<Third embodiment>

Alternatively, the configuration shown in FIG. 5 can also be used. In this pulp removing device 1b, the placing member 2b and the pressing member 3b are formed into a cylindrical shape, and the outer peripheral surface thereof is formed of a mesh, wire, pipe, or the like. Then, a high-pressure jet device 4 is provided inside the cylindrical pressing member 3b, and high-pressure jet water is injected onto the pineapple leaves 6 sandwiched between the placing member 2b and the pressing member 3b. 3b and the mounting member 2b are penetrated therethrough.

In addition, when the mounting member 2b and the pressing member 3b are constructed of cylindrical members in this way, the outer circumferential surface is changed as shown in FIG. 6 so that the pressing force can be changed according to the thickness of the pineapple leaf 6. The member is made of a flexible member, and elastically deformable curved spokes are provided between the inner bearing and the joining surfaces of the cylindrical mounting member 2b and the pressing member 3b are brought into surface contact. You can also do this.

Next, the operation of the pulp removing device 1 configured as described above will be explained.

First, it is assumed that cracks 61 are generated on the surface of the pineapple leaf 6 by the crack generation device 5, and when pulp is removed using the pineapple leaf 6 with such cracks 61. I will explain about it.

When removing pulp from the pineapple leaf 6, the pineapple leaf 6 is sandwiched between the rotating mounting member 2 (2a, 2b) and the pressing member 3 (3a, 3b). At this time, the long fibers of the pineapple leaves 6 are arranged along the conveyance direction, and the pineapple leaves 6 are sandwiched and conveyed.

Then, the pineapple leaves 6 sandwiched between the placing members 2 (2a, 2b) and the pressing members 3 (3a, 3b) are conveyed along the longitudinal direction by the drive of the rollers.

Then, high-pressure jet water is jetted toward the surface of the pineapple leaf 6 from the high-pressure jet device 4 provided on the upper side. At this time, since the pineapple leaves 6 are fixed by the pressing members 3 (3a, 3b), the pineapple leaves 6 do not move around due to water pressure, and high-pressure jet water can be stably applied.

The high-pressure jet water sprayed in this manner hits the cracks 61 formed on the surface of the pineapple leaf 6 and removes the pulp by scraping it off.

Then, high-pressure jet water is passed through from the back side of the pineapple leaf 6 to below the mounting member 2 (2a, 2b), so that the pulp on the back side of the pineapple leaf 6 can also be scraped off at the same time. There is.

In this way, according to the above embodiment, the placing members 2 (2a, 2b) on which the pineapple leaves 6 having long fibers are placed between the pulp, and the placing members 2 (2a, 2b) are provided. ), the mounting member 2 (2a, 2b) is equipped with a high-pressure jet device 4 that injects high-pressure jet water onto the pineapple leaf 6 placed on the pineapple leaf 6 to remove pulp, and the mounting member 2 (2a, 2b) is connected to the high-pressure jet water. Since the structure is made of a member that penetrates through the pineapple leaves 6, when the high-pressure jet water is sprayed onto the pineapple leaves 6 to scrape off the pulp, the high-pressure jet water and the pulp can reach the lower side of the mounting member 2 (2a, 2b). This allows the pulp on the front side and the pulp on the back side of the pineapple leaf 6 to be removed at the same time.

Note that the present invention is not limited to the above embodiments, and can be implemented in various forms.

For example, in the above embodiment, the high-pressure jet water is applied in an oblique direction, but it is also possible to provide a plurality of high-pressure jets 4 and change the jetting angles of each to apply the high-pressure jet water. . By changing the spray angle in this way, high-pressure jet water can be applied from various directions even to the contact area between the pressing member 3 (3a, 3b) and the pineapple leaf 6, which is difficult to hit by high-pressure jet water. This allows the pulp to be removed.

Further, in the above embodiment, the placing members 2 (2a, 2b) and the pressing members 3 (3a, 3b) are made to circulate, but the high-pressure jet device 4 side is moved in the front and back direction to remove pulp. You can do it as you go.

Furthermore, in the above embodiment, the high-pressure jet water is injected from above, but if the high-pressure jet water is injected inside the device, there is a possibility that it will bounce off walls etc., so a vacuum device is installed below. It is also possible to provide a filter to absorb the high-pressure jet water and pulp and circulate only the water.

<Example 1>

Examples will be described below.

A mounting member that allows high-pressure jet water to pass through leaves (weighing 75 g) that are cut from the base of the discarded pineapple tree in Ogimi Village, Okinawa Prefecture, after 7 months of germination, after harvesting the edible fruit. A high-pressure jet of water at a speed of 7 m/sec was applied to the pineapple leaves at an angle of 70 to 85 degrees with respect to the leaf surface. A high-pressure jet device with a maximum pressure of 12 MPa was used to generate high-pressure jet water. The water pressure of the high-pressure jet was 5 MPa. As this mounting member, a plurality of cylindrical members arranged in parallel with a certain gap was used. A groove was formed on the outer peripheral surface of this cylindrical member, and a plurality of grooves were provided along the axial direction.

A cyclone jet nozzle, in which jet water swirls, was used as the nozzle from which high-pressure jet water is blown. The distance between the nozzle and the leaves is 35 cm. The average particle size of the bubbles mixed into the high-pressure jet water was 50 μm, and the mixing rate was 5%. By treatment with high-pressure jet water, pineapple long fibers with a maximum fiber width of 200 μm and an average length of 450 mm were obtained. The dry weight of the obtained long fibers (moisture content less than 10%) is 4.5 g. No long fibers were observed in the pulp removed from the leaves, and no pulp was observed on the surface of the long fibers.

<Example 2>

Next, another example will be described.

Basho pseudostems (weighing 185 g), 80 cm long and 10 cm wide, are made from Ito Basho, which is cultivated in Nanjo City, Okinawa Prefecture, to make Basho cloth from hand-stacked threads. high-pressure jet water was applied to the pseudomorph of Basho at an angle of 65 to 80 degrees with respect to the surface of the pseudoprosthesis. The flow rate of the high-pressure jet water was 10 m/sec, and a cyclone jet nozzle in which water swirled was used at the outlet. The distance between the nozzle and the pseudostem is 50 cm. By high-pressure jet water treatment, Basho long fibers with a maximum fiber width of 230 μm and an average length of 700 mm were obtained. The dry weight of the obtained long fibers (moisture content less than 10%) was 6.1 g. A few long fibers were observed in the pulp removed from the pseudostem, but no pulp was observed on the surface of the obtained long fibers. Furthermore, the long fibers were not entangled with each other.

The present invention can be used in the textile industry, where long fibers are extracted by removing pulp from leaves and pseudostems that would otherwise be discarded, and are then spun and utilized.

1... Pulp removing device 2, 2a, 2b... Placement member 21... Roller 22... Linear member 23... Rotating member 3, 3a, 3b... Pressing member 31... Roller 32... Linear member 4... High pressure jet device 5... Crack generating device 51... Rotating body 52... Convex body 6... Pineapple leaf 61... Crack

Claims (5)

a mounting member for mounting a plant having long fibers between the pulp;
A high-pressure jet device that injects high-pressure jet water onto the plant placed on the placing member to remove pulp,
A pulp removing device characterized in that the mounting member is configured to allow the high-pressure jet water to pass through it. The pulp removing device according to claim 1, further comprising a pressing member for pressing the plant placed on the mounting member. The pulp removing device according to claim 1, wherein the high-pressure jet device jets high-pressure jet water perpendicularly or obliquely to the surface of the mounting member. a mounting member for mounting a plant having long fibers between the pulp;
a pressing member that presses the plant placed on the placing member;
A high-pressure jet device that injects high-pressure jet water onto the plant sandwiched between the placing member and the pressing member to remove pulp,
The mounting member and the pressing member are configured to allow the high-pressure jet water to pass therethrough, and
Pulp removal characterized in that the placing member and the pressing member are rotated to transport the plant sandwiched between the placing member and the pressing member while jetting high-pressure jet water to remove the pulp. Device. 2. The pulp removing device according to claim 1, wherein the plant has cracks in the pulp along a direction intersecting the long fibers.

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