JPH07107877A - Cultured shellfish cleaning machine - Google Patents

Abstract

PURPOSE:To provide a method for surely removing an attached material, capable of removing the attached material by allowing a rod-like body to collide with the material attached on the surface of cultured shellfish in a posture of the rod-like body protruded in the radial direction of a rotator and inclined backward by centrifugal force and free from such fear that the rod-like body collides with the surface of the cultured shellfish in vertical posture and breaks the cultured shellfish and free from fear damaging the cultured shellfish. CONSTITUTION:This cleaning machine is composed of a transfer means 2 holding a shellfish and transferring the shellfish along a prescribed transfer passage and a rotating and cutting means 3 arranged in upper and lower parts of transfer passage of the shellfish and removing the material attached to the surface of the shellfish. The rotating and cutting means 3 is constituted so as to pivot a number of rod bodies swingably to the rotating direction in the outer peripheral part of a rotator 7 and a means for controlling to oscillate toward the posture in the radical direction from the posture inclined to backward side of the rotation direction toward the radial direction of the rotator 7 formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aquaculture shell cleaner for removing harmful substances attached to pearl aquaculture shells and other aquaculture shells.

[0002]

2. Description of the Related Art If shellfish such as a barnacle and parasites attach to cultured shellfish, it will be harmful, and especially if shellfish attach to a hinge, the mouth cannot be opened and the shellfish will die. Therefore, it is necessary to remove the deposits about twice a year, and in the past, these deposits were manually removed using a special knife, etc., resulting in extremely poor work efficiency and a great amount of labor. There was a problem to say. Therefore, there was a strong demand for automation of work, but the complicated adhered shape and the shape and size of which are not constant, there is no fear of damaging the aquaculture shell, and the strong adhered deposits are automatically applied without giving a big shock. It was difficult to remove.

As a solution to such a problem, in Japanese Patent Publication No. 3-58693, a belt conveyor for sandwiching and carrying both side edges of a cultured shell and a rotary grinding body arranged above and below the carrying path. An aquaculture shell cleaning device was proposed. The rotary grinding body is provided with a large number of claws that are independently elastically supported by the supporting portion, and each claw moves back in the circumferential direction due to the contact resistance with the shell and is displaced in the direction of the rotation center, and contact is made. It is configured to return to its original state when the resistance is removed.

[0004]

However, in the aquaculture shell cleaning device disclosed in the above publication, if the elastic supporting force of the nail is weak, it is impossible to reliably remove the deposits, and if it is strong, the shell is damaged. There is a problem that the shellfish may be damaged and killed, and it is extremely difficult to adjust its elastic supporting force one by one according to the shellfish.

Further, means for sandwiching and transporting cultured shellfish are as follows:
Since both sides of the aquaculture shells are sandwiched and conveyed by a belt conveyor, if the size of the aquaculture shells is uneven, the holding will be incomplete and it will move during the transportation and cannot be reliably cleaned. There are problems such as damage to the shellfish and large areas that cannot be cleaned.

In view of the above-mentioned conventional problems, the present invention provides a culture shell cleaner capable of reliably removing the deposits on the culture shell without fear of damaging the culture shell and constantly cleaning the entire surface. The purpose is to propose.

[0007]

In order to achieve the above-mentioned object, the present invention, if indicated by the reference numerals in the drawings, in claim 1, the shellfish is sandwiched and a predetermined transfer path is provided. In the aquaculture shell cleaner, the rotary grinding means 3 is provided with a transfer means 2 for transferring along shells 4 and a rotary grinding means 3 arranged above and below the shell transfer path 4 for removing deposits on the shell surface. , A rod-shaped body 8 arranged in parallel in the axial direction at a plurality of circumferential positions of the rotating body 7 and its outer peripheral portion, and each rod-shaped body 8 is pivotally movable in the rotational direction of the rotating body 7. In addition to the support, a structure is provided which is provided with a means for restricting the swinging of the rotary body 7 from the posture tilted rearward in the rotational direction with respect to the radial direction toward the radial posture.

Further, in the second aspect, the structure according to the first aspect is adopted in which the link member 34 is interposed between the rotating body 7 and the rod-shaped body 8.

Further, in claim 3, the transfer means 2
And the fixed-side endless belts 5a, 5b, 6b, and 6c that rotate a fixed path facing one side of the transfer path 4, and the transfer path 4
The movable side endless belts 6a and 5c that rotate the elastically retractable path facing the other side are used.

According to the present invention, the means 21 for applying tension to the elastically retractable path of the movable side endless belt 6a is applied to the path opposite to the path facing the transfer path 4. 26, and a plurality of idle wheel bodies 23, which are interposed between a route facing the transfer route 4 and a route on the opposite side thereof, and which are vertically movable and whose upper and lower ends engage with the belt. The configuration described in 1. is adopted.

Further, according to a fifth aspect of the present invention, the transfer path 4 is divided into front and rear, and fixed side endless belts 5a and 5b are arranged on both sides of the lower part of one transfer path, and the rotary grinding means 3 is provided between them. The movable side endless belt 6a is disposed at the center of the upper portion, and the rotary grinding means 3 is disposed on both sides thereof.
In the other transfer path, fixed side endless belts 6b and 6c are arranged on both sides of the upper part, the rotary grinding means 3 is arranged between them, and the movable side endless belt 5c is arranged in the lower central part. The rotary grinding means 3 is arranged on both sides, and the constitution described in claim 3 is adopted.

Further, according to the present invention, the transfer means 2 and the rotary grinding means 3 are covered with a cover, and the transfer path 4 is provided.
The configuration according to claim 1 is provided in which a means 11 for injecting water toward the and a drainage means 12 are provided.

[0013]

In the first aspect of the present invention, since the rod-shaped body 8 is swingably supported on the outer peripheral portion of the rotary body 7 to form the rotary grinding means 3, the rotary body 7 can be rotated. Along with this, the rod-shaped body 8 is brought into a posture in which it is projected in the radial direction of the rotating body 7 by centrifugal force, and in this posture, it collides with the adhered matter on the surface of the cultured shellfish transferred by the transfer means 2 to grind and remove it. Since the rod-shaped body 8 is restricted from swinging toward the radial posture from the posture inclined rearward in the rotational direction with respect to the radial direction of the rotary body 7, the rod-shaped body 8 is restricted. There is no fear that the tip of 8 collides with the surface of the cultured shellfish in a vertical posture and the cultured shellfish is damaged, and the rod-shaped body 8
Since the collision force can be easily adjusted by adjusting the rotation speed of the rotating body 7 with a continuously variable transmission or the like, it is possible to reliably remove the deposits without damaging the cultured shellfish.

In the second aspect, the rotating body 7 and the rod-shaped body 8
Since the link member 34 is interposed between the rod-shaped bodies 8, the resistance against the movement of the rod-shaped bodies 8 when the rod-shaped bodies 8 collide with the cultured shellfish can be reduced, the rod-shaped bodies 8 behave smoothly, and the cultured shellfish is damaged. You can be less feared.

In the third aspect of the invention, the transfer means 2 has the fixed side endless belts 5a, 5b and 6 which rotate in a fixed path.
b, 6c and the movable side endless belts 6a and 5c that rotate the elastically retractable path, so that any position of the aquaculture shell can be pinched and transferred between these endless belts. Therefore, by changing the sandwiching position of the cultured shellfish and removing the deposits on the non-sandwiched portion by the rotary grinding means 3, it is possible to reliably remove the deposits on the entire surface of the cultured shellfish.

In the fourth aspect, the movable side endless belt 6
In a, tension is applied to a path portion on the side opposite to the path facing the transfer path 4, and the upper and lower ends can be vertically moved between the path portion facing the transfer path 4 and the path portion on the opposite side. Since a plurality of idle wheel bodies 23 that engage with the belt are interposed, for example, when the path portion of the movable side endless belt 6a facing the transfer path 4 is largely displaced in order to sandwich the central portion of the cultured shellfish. The displacement can be allowed without difficulty, and the clamping force at that time does not change significantly, so that any part of the cultured shellfish can be stably held.

According to a fifth aspect of the present invention, the transfer path 4 is divided into front and rear, and one of the transfer paths holds the cultured shellfish on both sides of the lower part and the central part of the upper part, and on the other transfer path, both sides of the upper part and the central part of the lower part. Since the aquaculture shells are sandwiched and the deposits on the portions not sandwiched are removed, the deposits on the entire surface of the aquaculture shells can be reliably removed.

According to the sixth aspect of the present invention, water is jetted toward the transfer path 4 so that the removed adhered matter is immediately washed out and discharged. Therefore, the adhered matter can be effectively removed and the adhered matter can be effectively removed. It is possible to remove the washed and cultured aquaculture shells.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An aquaculture shell cleaner according to an embodiment of the present invention will be described below with reference to FIGS.

1 to 3 showing a schematic structure, a culture shell cleaner 1 mainly comprises a transfer means 2 for sandwiching and transferring the culture shell, and a rotation provided on both upper and lower sides of a transfer path 4 by the transfer means 2. The grinding means 3 is used.

The transfer means 2 is a front transfer means 2 in the transfer direction.
a and the rear transfer means 2b. As shown in FIG. 2, the front part transfer means 2a includes a pair of transfer belts 5a and 5b which are arranged below the transfer path 4 at appropriate intervals.
A holding belt 6a arranged in the center of the upper part of the transfer path 4
As shown in FIG. 3, the rear transfer means 2b is provided with a transfer belt 5c arranged in the center of the lower part of the transfer path 4 and an upper part of the transfer path 4 with an appropriate interval. It is composed of a pair of pressing belts 6b and 6c. In addition, a pair of transfer belts 5a below the front transfer means 2a,
5b extends longer than the pressing belt 6a forward, and is configured so that the cultured shellfish can be supplied by placing it on it.

The rotary grinding means 3 are paired up and down in front of and below the transfer path 4 in the front transfer means 2a, and are transferred to both sides of the holding belt 6a in the upper part of the transfer path 4 and in the lower part of the transfer path 4. It is arranged in the central portion between the belts 5a and 5b, and in the rear transfer means 2b, a pair of front and rear is provided above and below the transfer path 4, and at the upper part of the transfer path 4, the center between the holding belts 6b and 6c. In the lower part of the transfer path 4, it is arranged on both sides of the transfer belt 5c.

The structure of each rotary grinding means 3 will be described in detail later, but a rotary body that is rotationally driven in a direction opposite to the moving direction of the transfer belts 5a to 5c and the holding belts 6a to 6c in the transfer path 4. 7 and a rod-shaped body 8 arranged in parallel at a plurality of positions on the outer peripheral portion in the axial direction. Each rod-shaped body 8 is pivotally supported so as to be swingable in the rotation direction of the rotating body 7, and swings toward the radial posture from the posture inclined rearward in the rotational direction with respect to the radial direction of the rotating body 7. It is regulated to do. Note that FIG.
In the illustrated example, only the rotary grinding means 3 on the uppermost rear portion is rotationally driven in the reverse direction, and the grinding is also performed from the reverse direction. The number and position of the rotary grinding means 3 rotated in the opposite direction may be set appropriately according to the type and state of the cultured shellfish.

Next, the frame 9 and the transfer means 2 for supporting the entire aquaculture shell cleaner 1 will be described in detail with reference to FIGS. 4 and 5. A removal processing space 10 is provided on the front side of the frame 9, and the transfer means 2 is placed in the removal processing space 10.
And a rotary grinding means 3 are provided. In the illustrated state, the front surface and the upper surface of the removal processing space 10 are open,
Transfer belt 5 which is a part to supply cultured shellfish when used
It is covered with a cover (not shown) except the front end portions of a and 5b. A fountain pipe 11 for injecting cleaning water toward the transfer path 4 is arranged above the rear surface of the removal processing space 10, and a bottom surface 10a of the removal processing space 10 is formed in a gentle V shape. The drain gutter 12 is connected to the lowest end. These transfer means 2 are provided on the rear side of the frame 9.
A drive unit 13 of the rotary grinding means 3 is provided. The drive unit 13 is composed of a drive motor and a chain transmission mechanism, and is a well-known means, so a detailed description of its configuration will be omitted.

The transfer belts 5a and 5b are front transfer means 2a.
Is wound around the pulleys 14 and 15 disposed at the front and rear ends of the belt and a tension pulley 16 disposed at a lower portion between the pulleys 14 and 15, and a route portion facing the transfer route 4 between the pulleys 14 and 15 is a belt guide. It is fixedly guided at 17. The transfer belt 5c is wound around the pulley 15, the pulley 18 arranged at the rear end of the rear transfer means 2b, and the tension pulley 19 arranged in the lower part between these pulleys 15 and 18, so that the pulleys 15 and 18 are The path portion facing the transfer path 4 between the pair of guide members 20a, 2 which can be elastically retracted downward.
Guided at 0b.

The presser belt 6a is wound between pulleys 21 and 22 which are disposed at a proper distance from the front end of the front portion transfer means 2a and a position slightly forward of the rear end, and the presser belt 6a is transferred. A pair of idler wheels 23 are interposed between the lower path portion facing the path 4 and the upper path portion on the opposite side thereof with a front-rear space. This idle wheel 23 is composed of an annular plate-shaped pulley, and the hole is penetrated by the rotary drive shaft 31 of the rotary grinding means 3 and is held so as to be vertically movable and not to move more than a certain amount. There is.
The pulley 21 is set to have a slightly higher rotation speed than the pulley 22, so that the holding belt 6a has a higher tension in the upper path portion than the path portion facing the transfer path 4, and the belt tension causes the idle wheel body to move. 23
A path portion of the pressing belt 6a facing the transfer path 4 is urged downward by elastically retractable upward.
Further, the support shaft 2 disposed above the presser belt 6a
A tension roller 26 that pushes the pressing belt 6a from above is attached to the tip of a swing lever 25 that is swingable up and down about 4 and urged downward by a tension spring 27.

The pressing belts 6b and 6c are wound around the pulley 22, the pulley 28 disposed at the rear end of the rear transfer means 2b, and the guide roller 29 disposed in the upper middle portion between these pulleys 22 and 28. The path portion between the pulleys 22 and 28 facing the transfer path 4 is fixedly guided by a belt guide 30.

Next, the detailed structure of the rotary grinding means 3 will be described with reference to FIGS. 6 and 7. The rotary grinding means 3 is configured by fixing a rotary body 7 to a rotary drive shaft 31 protruding from the drive unit 13 into the removal processing space 10, and the rotary body 7 is a pair of rotary circles facing each other with an appropriate interval. Board 32
Is equipped with. Support pins 33 are arranged on the outer peripheral portion of the rotating body 7 at appropriate intervals in the circumferential direction, and both ends thereof are fixed to a pair of rotating discs 32. A plurality of (three in the illustrated example) link members 34 are fitted to the support pin 33 in the axial direction thereof. In the link member 34, a pair of link pieces 34b are extended in a bracket shape from a cylindrical portion 34a fitted to the support pin 33, and a base end portion of the rod-shaped body 8 is rotatably supported by a pin 35 at a tip end portion thereof. ing. The base end of the rod-shaped body 8 engages with the outer periphery of the tubular portion 34a of the link member 34, and the posture of the rod-shaped body 8 in the radial direction is inclined with respect to the radial direction of the rotating body 7 toward the rear side in the rotational direction. It is restricted to swing toward. The rod-shaped body 8 in this embodiment is made of a straight square rod made of stainless steel, but any material or shape can be used depending on the type and state of the cultured shellfish S.

When viewed from the outer peripheral side of the rotary grinding means 3,
The rod-shaped bodies 8 adjacent to each other in the circumferential direction are arranged in a zigzag pattern in which the axial positions of the support pins 33 are alternately shifted, and when the rotating body 7 is rotated, the space between the rod-shaped bodies 8 is changed to the next rod-shaped body. The body 8 passes through, and the entire surface of the space between the rotating discs 32, 32 can be ground by the rod-shaped body 8. Therefore, the spacers 36 are alternately fitted to one end and the other end of the support pin 33.

Next, a description will be given of the operation during the cleaning work of the adhered matter adhered to the surface of the cultured shellfish S.

When the cultured shellfish S are sequentially placed on the transfer belts 5a and 5b at the front end of the front portion transfer means 2a with their hinges facing the transfer direction, the cultured belts S are transferred by the transfer belts 5a and 5b. It is fed between the pressing belt 6a and 5a, 5b, and is conveyed while being sandwiched by these belts. In this manner, while the cultured shellfish S is sandwiched and transported by the front transport means 2a, both sides of the upper surface of the cultured shellfish S and the central portion of the lower surface thereof are rotated by the rotary grinding means 3 arranged above and below the transport path 4. The deposits are removed by grinding.

When sandwiching the cultured shellfish S between the transfer belts 5a, 5b and the holding belt 6a, one transfer belt 5a,
Since 5b is fixedly guided by the belt guide 17, stable transfer is possible, and the other holding belt 6a is provided.
Since the path portion facing the transfer path 4 can be elastically retracted upward, the cultured shellfish S can be reliably clamped and transferred without applying an excessive force. In particular, the tension is applied to the path portion on the opposite side of the path portion of the pressing belt 6a facing the transfer path 4 by the pulley 21 and the tension is applied by the tension roller 26, and the pressing force by the tension is increased or decreased. Floating wheel 23 that can move freely
Since it is transmitted to the path portion of the pressing belt 6a facing the transfer path 4 via the above, a large upward displacement of this path portion can be reasonably tolerated and the clamping force at that time does not change significantly. Even when the central part of the is clamped, it can be clamped stably.

Further, since the rotary grinding means 3 has a structure in which the rod-shaped body 8 is pivotally supported on the outer peripheral portion of the rotary body 7, the rod-shaped body 8 is rotated by centrifugal force as the rotary body 7 rotates. The body 7 has a posture protruding in the radial direction, and the body 7 can be effectively removed by colliding with the adhered matter on the surface of the cultured shellfish S in that posture. Further, at that time, the rod-shaped body 8 is restricted to a posture inclined rearward in the rotational direction with respect to the radial direction of the rotating body 7, and is prevented from swinging toward the posture in the radial direction further than that. There is no fear that the tip of the rod-shaped body 8 collides with the surface of the cultured shellfish S in a vertical posture and damages the cultured shellfish S. Further, the collision force of the rod-shaped body 8 can be easily adjusted by adjusting the number of rotations of the rotating body 7 by a continuously variable transmission or the like arranged in the drive unit 13, so that the adhered matter can be attached without fear of damaging the cultured shellfish S. Can be reliably removed. Furthermore, since the link member 34 is interposed between the rotating body 7 and the rod-shaped body 8, it is possible to reduce the resistance to the movement of the rod-shaped body S when the rod-shaped body 8 collides with the cultured shellfish S, and the rod-shaped body S is formed. It behaves smoothly and the risk of damaging the cultured shellfish S is further reduced.

Next, the cultured shellfish S is sent to the rear transfer means 2b and transferred while being sandwiched by the transfer belt 5c and the holding belts 6b and 6c. While being transferred by the rear transfer means 2b. In addition, the rotary grinding means 3 disposed above and below the transfer path 4 attaches the center part of the upper surface and the both side parts of the lower surface of the cultured shellfish S that have not been ground while being transferred by the front transfer means 2a. The kimono is ground and removed, and thus the cultured shellfish S
The deposits on the entire surface of are reliably removed.

Further, when removing the adhering matter by the rotary grinding means 3 while transferring the cultured shellfish S along the transfer path 4 by the transfer means 2, water is transferred from the upper fountain pipe 11 toward the transfer path 4. As a result, the removed adhering matter is immediately washed out and discharged from the drain gutter 12 to the outside, so that the adhering matter is efficiently removed by the rotary grinding means 3 and the adhering matter is removed and washed. The cultured aquaculture shell S thus taken out is taken out.

[0036]

According to the first aspect of the present invention, since the rod-shaped body is swingably pivotally supported on the outer peripheral portion of the rotary body to constitute the rotary grinding means, the rod-shaped body is rotated along with the rotation of the rotary body. The body can be removed by the centrifugal force that causes it to project in the radial direction of the rotating body and collides with the deposits on the surface of the cultured shellfish being transferred by the transfer means in that position, and at that time. Since the rod-shaped body is restricted from swinging toward the radial posture from the posture inclined rearward in the rotational direction with respect to the radial direction of the rotating body, the tip of the rod-shaped body is against the surface of the cultured shellfish. There is no fear that the cultured shellfish will be damaged due to collision in a vertical posture, and the collision force of the rod-shaped body can be easily adjusted by adjusting the rotation speed of the rotating body with a continuously variable transmission, etc. It is possible to reliably remove the deposits without fear of damaging the cultured shellfish. That.

According to the second aspect, since the link member is interposed between the rotating body and the rod-shaped body, it is possible to reduce the resistance to the movement of the rod-shaped body when the rod-shaped body collides with the aquaculture shell, so that the rod-shaped body can be reduced. Behaves smoothly, and the risk of damaging the cultured shellfish can be further reduced.

According to the third aspect of the present invention, the transfer means is composed of the fixed side endless belt that rotates in the fixed path and the movable side endless belt that rotates in the elastically retractable path. , Any position can be clamped between the endless belts and transferred to the cultured shellfish. Therefore, the sandwiched position of the cultured shellfish should be changed, and the deposits on the non-clamped portion should be removed by the rotary grinding means. Thus, it is possible to reliably remove the deposits on the entire surface of the cultured shellfish.

According to the fourth aspect, in the movable side endless belt, tension is applied to the path portion on the side opposite to the path facing the transfer path, and the path portion facing the transfer path and the path portion on the opposite side. Since a plurality of idle wheel bodies that can move vertically and whose upper and lower ends engage with the belt are interposed between them, a large displacement of the path portion facing the transfer path of the movable side endless belt can be reasonably tolerated. The holding force at that time does not change greatly, and any part of the cultured shellfish can be stably held.

According to the fifth aspect of the present invention, the transfer route is divided into front and rear, and the cultured shellfish is sandwiched between the lower both sides and the upper central part in one of the transfer routes, and the cultured shellfish is sandwiched between the upper both sides and the lower central part in the other transfer route. Since the fish is sandwiched and the deposits on the non-sandwiched portions are removed, the deposits on the entire surface of the aquaculture shell can be reliably removed.

According to the sixth aspect of the present invention, the adhering matter removed by jetting water toward the transfer path is immediately washed out and discharged, so that the adhering matter can be effectively removed and the adhering matter can be removed. The cleaned and washed cultured shellfish can be taken out.

[Brief description of drawings]

FIG. 1 is a front view showing a schematic configuration of a culture shell cleaner according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a side view taken along the line BB of FIG.

FIG. 4 is a front view of the frame and transfer means of the embodiment.

5 is a view taken along the line CC of FIG.

FIG. 6 is a front view of the rotary grinding means of the embodiment.

FIG. 7 is a view taken in the direction of arrows D-D in FIG. 6.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Aquaculture shell cleaner 2 Transfer means 2a Front transfer means 2b Rear transfer means 3 Rotation grinding means 4 Transfer path 5a Transfer belt 5b Transfer belt 5c Transfer belt 6a Press belt 6b Press belt 6c Press belt 7 Rotating body 8 Rod 11 Fountain Pipe 12 Drain 21 Pulley 23 Idling wheel 26 Tension roller 34 Ring member

Claims (6)

[Claims] 1. A culture comprising a transfer means for sandwiching and transferring the shellfish along a predetermined transfer path, and a rotary grinding means disposed above and below the shellfish transfer path for removing deposits on the shell surface. In the shell cleaner, the rotary grinding means is composed of a rotating body and a rod-shaped body arranged in parallel at a plurality of circumferential positions on the outer periphery of the rotating body. An aquaculture characterized by swingably pivoting and means for restricting swinging toward a radial posture from a posture inclined rearward in the rotational direction with respect to the radial direction of the rotating body. Shell cleaner. 2. The aquaculture shell cleaner according to claim 1, wherein a link member between the rotating body and the rod-shaped body is interposed. 3. The transfer means comprises: a fixed-side endless belt that rotates a fixed path facing one side of the transfer path; and a movable part that rotates an elastically retractable path facing the other side of the transfer path. The aquaculture shell cleaner according to claim 1, wherein the aquaculture shell cleaner comprises a side endless belt. 4. A means for applying a tension to an elastically retractable path of a movable side endless belt with respect to a path opposite to a path facing a transfer path, and a path facing the transfer path and an opposite side thereof. The aquaculture shell cleaner according to claim 3, wherein the aquaculture shell cleaner comprises a plurality of floating wheels which are interposed between the path and are vertically movable and whose upper and lower ends are engaged with the belt. 5. A transfer path is divided into front and rear, fixed endless belts are arranged on both sides of a lower part of one of the transfer paths, rotary grinding means is arranged between them, and a movable endless belt is arranged at a central portion of the upper part. In addition to arranging the rotary grinding means on both sides thereof, on the other transfer path, the fixed side endless belts are arranged on both sides of the upper part and the rotary grinding means are arranged between them, and the movable side endless belt is arranged on the lower center part. The aquaculture shell cleaner according to claim 3, wherein the rotary shell cleaning means is arranged and rotary grinding means are arranged on both sides thereof. 6. The culture shell cleaning machine according to claim 1, wherein the transfer means and the rotary grinding means are covered with a cover, and means for ejecting water toward the transfer path and drainage means are provided.