Crushing device for scallop shells

Abstract

To provide a crushing device for scallop shells that can crush a crushing object body efficiently and effectively, and that allows easy handling of the crushed crushing object body.SOLUTION: A crushing device includes a container 10 which is provided with an inlet portion for a crushing object body, a lid 20 for the inlet portion, and an outlet portion for the crushed crushing object body, where the upper part of the inner circumferential surface of the side wall has a vertical surface and has a tapered shape that tapers downward from the lower end of the vertical surface. Inside the container, there are provided a substantially frustoconical center portion connected to a predetermined rotation shaft and two crushing mechanism portions formed at positions opposite to the center portion. The device further includes a slope portion 50 that serves as a guide for discharging the crushed crushing object body to the outside of the container, and a locking portion 43 for a storage bag that stores the crushed crushing object body passing through the slope portion.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to the technology of a grinding device for grinding scallop shells.

Background Art

[0002] Conventionally, various grinding devices according to applications are known in the world.

[0003] In regions where aquaculture of shellfish such as scallops is prosperous, there are large-scale treatment facilities for grinding and powdering shells. However, in aquaculture facilities, etc., since shells are accumulated in large quantities and then brought to the treatment facilities, it has had an adverse impact on the surrounding environment (bad odor, water pollution, landscape).

[0004] Therefore, in order to realize environmental improvement by quick and clean treatment, a relatively small grinding device that can be installed in a processing plant, etc. has been desired.

[0005] Here, shells are formed by the shellfish concentrating the components of seawater through physiological reactions, and the main component is calcium carbonate. If powdered and mixed into the soil, it can promote the growth of crops and improve the taste. Also, if the powder is mixed into the feed in a poultry farm, eggs that are less likely to crack can be realized by supplementing calcium. There is also the possibility of using it as an aggregate for concrete, and by fixing the carbon dioxide in the sea stored in the calcium carbonate shells in the aggregate for a long time, it can contribute to the SDGs. Also, for tourism purposes, scallop shells can be crushed and spread on the roads running through the hilly areas to create a white road with an exotic atmosphere and attract tourists.

[0006] Also, if the grinding device can be utilized as a recycling facility with little unused resources, it can contribute to a recycling-oriented society and the SDGs.

[0007] As a related art, there is a technology that provides a grinding device in which a grinding rotor having a grinding part for grinding an object to be processed rotatably around a vertical axis at the lower part in a vertical cylindrical processing chamber is provided on the outer peripheral part, a gas introduction port for introducing gas is provided in the processing chamber below the grinding rotor, a classification part for classifying the object to be processed ground by the grinding rotor is provided at the upper part in the processing chamber, a discharge port for discharging the classified powder of a predetermined particle size together with the gas is provided, and a cylindrical member arranged coaxially with the rotation axis of the grinding rotor is provided between the grinding rotor and the classification part in a state where the classification part is located inside on the upper side and the grinding part of the grinding rotor is located outside on the lower side, and in which grinding processing and classification processing are properly performed (see Patent Document 1).

Prior Art Documents

Patent Documents

[0008]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0009] However, in the above related art, it is difficult to efficiently and effectively grind the scallop shells as the object to be ground without stacking them, and no particular measures have been taken to facilitate the removal of the ground scallop shells from the grinding device and their subsequent handling during transfer and storage.

[0010] An object of the present invention is to provide a grinding device for scallop shells that can efficiently and effectively grind an object to be ground and is easy to handle the ground object to be ground.

Means for Solving the Problems

[0011] The grinding device for scallop shells of the present invention is A container is provided with an inlet for the material to be crushed, a lid for the inlet, and an outlet for the crushed material to be discharged. The upper part of the inner peripheral surface of the side wall is a vertical surface, and the lower end of the vertical surface is tapered downward to form a container with a tapered shape. Inside the container, there is a substantially frustum-shaped center part connected to a predetermined rotating shaft part, a first crushing mechanism part and a second crushing mechanism part formed at positions facing the center part. The first crushing mechanism part and the second crushing mechanism part each include a plate-like body part that extends from the center side of the center part toward the outside and is provided substantially parallel at a height position of 14 mm to 20 mm from the bottom surface of the container, a long rod part that stands upright on the center side of each plate-like body part, and a short rod part that stands upright outside the long rod part. The height dimensions of the center part and the long rod part are substantially the same. Vertical slits are provided at substantially equal intervals on the inner peripheral surface of the side wall. It is provided with a cover part that covers the outlet part from the outside of the container. A step corresponding to the thickness dimension of the side wall of the container is formed on the inner surface side of the cover part and the periphery of the outlet part. It is provided with a slope part that serves as a guide for discharging the crushed material to be crushed outside the container. It is provided with a plurality of locking parts for locking a storage bag for storing the crushed material that has passed through the slope part.

[0012] With such a configuration, the first crushing mechanism part and the second crushing mechanism part mainly use the long rod part and the short rod part to crush the shell of the scallop as the material to be crushed. The first crushing mechanism part and the second crushing mechanism part are rotated at high speed by a predetermined rotating shaft part, and while the material to be crushed moves from the center side (near the center part) of the first crushing mechanism part and the second crushing mechanism part to the circumferential direction (outside) by centrifugal force, the material to be crushed is crushed mainly by the impact force, shearing force, grinding, etc. by the long rod part and the short rod part. Of course, further crushing is promoted by the collision between the materials to be crushed and the collision between the materials to be crushed during the accelerated crushing process. The smaller the material, the less likely it is to break. It is required to apply shear force, frictional force, etc. to the material to be crushed more strongly and frequently, in addition to the impact force. In this regard, if at least a part of the crushing mechanism part has a shape of a standing rod-like substantially square rod or substantially round rod, the collision area of the plane or curved surface is larger than that of the blade surface, etc., and the collision probability with the material to be crushed can be increased.

[0013] The scallop shells as the material to be crushed are loaded from the inlet so as to be piled up to the tapered upper end of the inner peripheral surface of the side wall. In a state where pressure is applied below the loaded material to be crushed, the first crushing mechanism part and the second crushing mechanism part (hereinafter, may be collectively referred to as the "crushing mechanism part") are rotated at high speed by a predetermined rotating shaft part. First, it is crushed by the impact force of the crushing mechanism part. Then, centrifugal force is generated in the material to be crushed that is given rotation by the rotation of the crushing mechanism part, and due to the centrifugal force, the material to be crushed is thrown radially outward from the rotation center and collides with the inner peripheral surface of the side wall of the container. Further, at least a part of the material to be crushed pushed outward by the centrifugal force rises along the inner peripheral surface of the side wall. At this time, the material to be crushed during crushing rises in the outer region inside the container by riding on the swirling air flow generated by the rotational force and centrifugal force of the crushing mechanism part. Except for the upper part of the inner peripheral surface of the side wall, the outer diameter and inner diameter of the container are in a tapered shape (tapered downward) that linearly decreases from the upper end to the lower end, and the diameter is larger toward the upper part, so the rotation slows down during the ascent. Combined with the action of gravity, it mainly flows into the center side (inner region) at the upper part and descends, returning to the above cycle, and as a result, it circulates, and the material to be crushed is effectively crushed. In addition, if the inner side is a long rod portion, the object to be pulverized in the process of being pulverized riding on the flow descending from above collides with the long rod portion having a large area (relatively compared with the short rod portion), and can be pulverized more efficiently compared with the short rod portion. Also, due to high-speed rotation, a state appears where there is a high wall formed by the long rod portion on the inner side and a low wall formed by the short rod portion on the outer side, and the object to be pulverized in the process of being pulverized flowing in from the center side (near the center portion) can be smoothly pushed out to the outer side by centrifugal force. Furthermore, since the center portion is in a substantially frustum shape and the height dimension is substantially the same as that of the long rod portion, the object to be pulverized in the process of being pulverized riding on the flow descending from above is scattered (flowed) to the outer side by the action of the shape itself and the action of centrifugal force due to rotation, and the movement of the object to be pulverized in the process of being pulverized is smoothly performed. Incidentally, at the development stage, an attempt was made with the short rod portion on the inner side and the long rod portion on the outer side, but it was difficult to smoothly move the object to be pulverized in the process of being pulverized to the outer side due to centrifugal force and the like, and it was found through trial and error that such a configuration is important. In addition, further pulverization is promoted when the object to be pulverized or the object to be pulverized in the process of being pulverized collides with the vertical slit (concavo-convex portion) provided on the inner peripheral surface of the side wall of the container. In addition, a step corresponding to the thickness dimension of the side wall of the container (for example, 6 mm) is formed between the inner surface side of the cover portion and the periphery of the outlet portion, and further pulverization is also promoted when the object to be pulverized or the object to be pulverized in the process of being pulverized collides with the step.

[0014] Also, first, the object to be pulverized is charged from the charging port so as to be packed up to the tapered upper end of the inner peripheral surface of the side wall. However, as the rotation starts, the object to be pulverized is stirred and scattered inside the container, and an upper space is required as a space for allowing its movement. Also, it is necessary to make the diameter of the pulverizing device as small as possible to make it compact. Therefore, the inner peripheral surface of the side wall is a vertical surface at the upper part and a tapered shape that narrows downward from the middle.

[0015] The plate-like portions of the first pulverizing mechanism and the second pulverizing mechanism are provided at a height position of 14 mm to 20 mm from the bottom surface of the container, thereby avoiding the situation where flat scallop shells as the object to be pulverized are sandwiched and stacked and the rotation by the rotating shaft portion stops. During the development stage, an attempt was made to reduce the distance between the plate-like portion and the bottom surface of the container so as not to stack, but it was difficult, and it was found through trial and error that it is important to provide such an appropriate space.

[0016] With a configuration including a slope portion and a plurality of locking portions for locking the storage bag, the pulverized object to be pulverized can be easily removed from the pulverizing device. Complicated mechanisms such as a classification portion for classification processing and a discharge port for discharging the classified powder together with the gas are not required, and a simple mechanism can achieve low cost, easy maintenance, and simplified handling.

Advantages of the Invention

[0017] According to the present invention, it becomes possible to provide a scallop shell pulverizing device that can efficiently and effectively pulverize the object to be pulverized and is easy to handle the pulverized object to be pulverized.

Brief Description of the Drawings

[0018]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Embodiments for Carrying Out the Invention

[0019] Hereinafter, the configuration of the scallop shell pulverizing device 1 in the first embodiment of the present invention will be described with reference to the drawings.

[0020] Referring to FIG. 1, the scallop shell pulverizing device 1 of this embodiment has an outer dimension of, for example, a width of 1300 mm, a depth of 740 mm, and a height of 1100 mm, and is made of a corrosion-resistant metal such as stainless steel. As shown in FIG. 8, it may be realized as a system configuration including a stand 2 with casters and stoppers, a motor 3 (7.5 KW), and a control panel 4.

[0021] The scallop shell pulverizing device 1 of this embodiment includes a container 10. The container 10 is supported by four columns 41 (angles). An inlet 11 (first opening) for scallop shells 5 as a material to be pulverized is formed in the container 10. The lid 20 of the inlet 11 includes a connecting portion 21 with the container 10 and a stopper portion 22 to the container 10. Also, two cushion portions 23 as an impact buffering mechanism when the lid 20 is opened are provided on the container 10 side.

[0022] Also, an outlet 12 (second opening) for the pulverized scallop shells 5F is formed in the container 10. The cover portion 30 covering the outlet 12 will be described later.

[0023] The upper part of the inner peripheral surface 13 of the side wall of the container 10 is a vertical surface and has a tapered shape that narrows downward from the lower end of the vertical surface. By making the upper part a vertical surface and having a tapered shape that narrows downward from the middle, the length dimension of the plate-like part 81 of the pulverizing mechanism part 80 can be made smaller (shorter), and the risk that the scallop shell 5 of the scallop gets caught in the gap between the plate-like part 81 and the bottom surface 14 of the container 10 and stacks up can be reduced. Also, first, the scallop shells 5F of the scallop are put in from the inlet part 11 so as to be packed up to the tapered upper end of the inner peripheral surface 13 of the side wall of the container 10. However, as the pulverizing mechanism part 80 starts rotating, the scallop shells 5 are stirred and scattered inside the container 10, and an upper space is required as a space for allowing their movement. On the other hand, it is required from the relationship of the installation location etc. to make the diameter of the container 10 as small as possible and compact. Therefore, the side wall inner peripheral surface 13 solves these problems by making the upper part a vertical surface and having a tapered shape that narrows downward from the middle.

[0024] Also, as shown in FIG. 2 (see also FIG. 5), vertical slits (concave-convex parts) may be formed on the inner peripheral surface 13 of the side wall of the container 10 at substantially equal intervals, for example, at intervals of 10 mm. The scallop shells 5 (including those in the middle of pulverization) collide with these slits, thereby promoting pulverization.

[0025] As shown in FIG. 4 (see also FIG. 3), inside the container 10, there is a predetermined rotating shaft part 60, which penetrates the bottom surface 14 of the container 10 and is connected to the drive shaft of the motor 3 for rotational drive via a power transmission member (details are not shown in the figure). The motor 3 is a gear motor configured to reduce the rotational speed of the drive shaft and reduce the load torque by incorporating gears. The motor 3 is controlled by the control panel 4 with a control circuit (not shown) to drive and rotate (forward rotation / reverse rotation) continuously or at an appropriate time. Note that the mode as the drive mechanism is not limited to the above, and a mechanism using a motor and a chain and sprockets may be used, or a handle may be provided at the end of the rotating shaft part exposed outside the container 10, and the container 10 may be configured to be rotatable manually by turning the handle.

[0026] As shown in FIGS. 4 to 6, a substantially frustum-shaped center portion 70 (for example, having a height dimension of about 70 mm) connected to the rotating shaft portion 60 is provided. Note that the fixture of the center member 70 has a simple configuration that is only fastened with screws, and it can be easily replaced even when the center member 70 deteriorates due to wear.

[0027] A first grinding mechanism portion 80-1 and a second grinding mechanism portion 80-2 are formed, extending from the center side to the outer side of the center portion 70 and formed at opposing positions. The first grinding mechanism portion 80-1 and the second grinding mechanism portion 80-2 each include plate-like body portions 81-1, 81-2 that extend from the center side to the outer side (toward the inner peripheral surface 13 of the side wall of the container 10) of the center portion 70 and are provided substantially parallel at a height position of 14 mm to 20 mm from the bottom surface 14 of the container 10, long rod portions 82-1, 82-2 that stand up on the center side of the respective plate-like body portions 81-1, 81-2, and short rod portions 83-1, 83-2 that stand up on the outer side. By providing the plate-like body portions 81-1, 81-2 at a height position of 14 mm to 20 mm from the bottom surface 14 of the container 10, it is possible to avoid pinching and stacking the flat oyster shells 5 and causing the rotation by the rotating shaft portion 60 to stop. In the development stage of the oyster shell grinding device 1, an attempt was made to reduce the distance between the plate-like body portion 81 and the bottom surface 14 of the container 10 so as not to stack them, but it was difficult. Instead, through trial and error, it was found that providing an appropriate gap can achieve both effective and efficient grinding and stack avoidance. The long rod portions 82-1, 82-2 are substantially square bars having a height dimension of about 70 mm, for example, and the short rod portions 83-1, 83-2 are substantially square bars having a height dimension of about 35 mm, for example. All four are configured to be replaceable when worn. Note that instead of being rod-shaped, they may be plate-shaped or the like as long as they can grind the oyster shells 5. Furthermore, a configuration with a larger number of long rod portions 82 and short rod portions 83 may be adopted to increase the collision area and thereby increase the collision probability and collision efficiency.

[0028] The first pulverizing mechanism part 80-1 and the second pulverizing mechanism part 80-2 mainly pulverize the scallop shell 5 as the object to be pulverized by the long bar parts 82-1, 82-2 and the short bar parts 83-1, 83-2. The first pulverizing mechanism part 80-1 and the second pulverizing mechanism part 80-2 are rotated at high speed by the rotating shaft part 60, and the scallop shell 5 is moved from the center side (near the center part 70) of the first pulverizing mechanism part 80-1 and the second pulverizing mechanism part 80-2 to the circumferential direction (outer side = inner peripheral surface 13 side of the side wall of the container 10) by centrifugal force. During this movement, the scallop shell 5 is pulverized mainly by the impact force, shearing force, grinding, etc. of the long bar parts 82-1, 82-2 and the short bar parts 83-1, 83-2. Of course, further pulverization is promoted by the collision between the scallop shells 5 and the collision between the scallop shells 5 during the accelerated pulverization process. The smaller the substance is, the more difficult it is to break, and it is required to apply shear force, frictional force, etc. to the object to be pulverized more strongly and frequently in addition to the impact force. In this regard, if at least a part of the pulverizing mechanism part 80 is in the shape of a standing rod-like substantially square rod or substantially round rod, the collision area of the plane or curved surface is larger than that of the blade surface, etc., and the collision probability with the scallop shell 5 can be increased.

[0029] Place the scallop shells 5 up to the tapered upper end of the inner peripheral surface 13 of the side wall of the container 10, and when the first pulverizing mechanism section 80-1 and the second pulverizing mechanism section 80-2 are rotated at high speed by the rotary shaft section 60 under a downward pressure, first, the scallop shells 5 are pulverized by the impact force of the pulverizing mechanism section 80. Then, centrifugal force is generated in the scallop shells 5 that have been given rotation by the rotation of the pulverizing mechanism section 80, and due to this centrifugal force, the scallop shells 5 are flung radially outward from the center of rotation and collide with the inner peripheral surface 13 of the side wall of the container 10. Further, at least a part of the scallop shells 5 (including those in the process of being pulverized) that have been pushed outward by the centrifugal force rises along the inner peripheral surface 13 of the side wall. At this time, the scallop shells 5 in the process of being pulverized rise in the outer region inside the container 10 by riding on the swirling air flow generated by the rotational force and centrifugal force of the pulverizing mechanism section 80. Except for the upper part of the inner peripheral surface 13 of the side wall, the outer diameter and inner diameter of the container 10 are in a tapered shape (a tapered shape that narrows downward) where they linearly decrease from the upper end to the lower end, and since the diameter is larger towards the upper part, the rotation slows down during the ascent. In combination with the action of gravity, at the upper part, it mainly flows into the central side (inner region) and descends, returning to the above cycle, and as a result, it circulates, and the scallop shells 5 are effectively pulverized. In addition, if the inner side (near the center portion 70) of the crushing mechanism portion 80 is a long rod portion 82, the scallop shell 5 being crushed riding on the flow descending from above collides with the long rod portion 82 having a large area (relatively compared with the short rod portion 83), and can be crushed more efficiently compared with the short rod portion 83. Also, due to high-speed rotation, a state appears where there is a high wall formed by the long rod portion 82 on the inner side and a low wall formed by the short rod portion 83 on the outer side, and the scallop shell 5 being crushed that has flowed into the center side (near the center portion 70) can be smoothly pushed outwards by centrifugal force. Furthermore, since the center portion 70 is in a substantially frustum shape and the height dimension is substantially the same as that of the long rod portion 82, the scallop shell 5 being crushed riding on the flow descending from above is scattered (flowed) outwards by the action of the shape itself and the action of centrifugal force due to rotation, and the movement of the scallop shell 5 being crushed is smoothly performed. Incidentally, at the development stage, an attempt was made with the inner side being the short rod portion 83 and the outer side being the long rod portion 82, but it was difficult to smoothly move the scallop shell 5 being crushed outwards due to centrifugal force etc., and it was found through trial and error that such a configuration is important.

[0030] As shown in FIG. 1 (also refer to FIG. 7), FIG. 9, etc., the removable cover portion 30 covers the outlet portion 12 (second opening) formed in the container 10 from the outside of the container 10. The cover portion 30 is configured to be simply pressed by two metal rods, i.e., the first presser 31-1 and the second presser 31-2 installed on a pair of auxiliary plate portions 42, and its position is fixed. The cover portion 30 may have rubber packings attached to three or four sides on the inner side so as to be in close contact with the container 10. Incidentally, the cover portion 30 may be fixed. Also, a step corresponding to the thickness dimension of the side wall of the container 10 (for example, 6 mm) is formed on the inner surface side of the cover portion 30 covering the outlet portion 12 and on the periphery of the outlet portion 12 (second opening). The collision of the scallop shell 5 and the scallop shell 5 being crushed against the step also promotes further crushing.

[0031] As shown in Fig. 1 and the like, the scallop shell grinding device 1 of the present embodiment includes a slope portion 50, which serves as a guide for discharging the ground scallop shell 5F to the outside of the container 10. The slope portion 50 has a substantially rectangular shape at the upstream portion and a substantially trapezoidal shape that flares out from the middle toward the downstream portion, aiming to improve the discharge efficiency and convenience. Here, the slope portion 50 is fixed, but it may also be configured to be detachable.

[0032] Also, as shown in Fig. 1 and the like, four locking portions 43 are provided for locking a plastic bag P as a storage bag for storing the ground scallop shell 5F discharged via the slope portion 50. The height dimension of the locking portion 43 is approximately 80 mm here, but the shape and number are arbitrary as long as it functions as a hook for hooking the plastic bag P.

[0033] With a configuration including the slope portion 50 and a plurality of locking portions 43 for locking the plastic bag P, the ground scallop shell 5F can be easily removed from the container 10. That is, a complex mechanism such as a classification portion for classification processing or a discharge port for discharging the classified powder together with the gas is unnecessary, and a simple mechanism can achieve low cost, easy maintenance, and simplified handling.

[0034] Next, an example of the operation of the scallop shell grinding device 1 of the present embodiment will be described with reference to Fig. 9 as well. As a premise, the particle size of the powder of the ground scallop shell 5F becomes smaller as the operating time (rotation time) of the scallop shell grinding device 1 is longer, that is, it becomes a finer powder. According to the scallop shell grinding device 1, the scallop shell 5 starts to become powdery in as short as 1 minute, but by adjusting the rotation time per grinding process in minutes, the fineness and shape of the powder can be controlled.

[0035] Hereinafter, the case where the operating time (rotation time) is set to 5 minutes per cycle (automatically stops after 5 minutes) will be described. First, as shown in Fig. 9(a), put the scallop shell 5 (for example, about 15 kg) into the inlet 11 with the lid 20 of the container 10 open, stack it up to near the tapered upper end position of the inner peripheral surface 13 of the side wall, and then close the lid 20.

[0036] Next, by pressing a predetermined switch on the control panel 4, start the operation (rotation) of the scallop shell grinding device 1, and rotate the first grinding mechanism 80-1 and the second grinding mechanism 80-2 at high speed by the rotating shaft 60 to grind the scallop shell 5. Then, it automatically stops after 5 minutes. The state inside the container 10 is that the ground scallop shell 5F accumulates on the bottom surface 14 and becomes powdery from the upper layer to the lower layer. The finest particle size range of 1 to 3 μm (micrometers) has been confirmed. As shown in Fig. 9(b), due to the action of the above-mentioned centrifugal force, etc., it accumulates higher especially on the outer side compared to the central side (inner region). In addition, the ground scallop shell 5F is heated due to the above-mentioned friction, etc. Even if the scallop shell 5 contains some moisture, it evaporates, so simple drying can be carried out simultaneously. In another run of the 5-minute treatment, when it was stopped experimentally at the 1-minute mark and the state inside the container 10 was checked, the ground scallop shell 5F was accumulated on the bottom surface 14, the upper layer was almost powdery, and fragments of the scallop shell 5 with a size of about 30 mm were mixed in the middle layer and below.

[0037] Finally, as shown in Fig. 9(c), lock the plastic bag P to the locking part 43 and set it, remove the cover part 30, and scrape out and remove the ground scallop shell 5F from the container using a scoop S, a brush, etc. from the outlet 12. Since the ground scallop shell 5F is stored in the plastic bag P, it can be moved and stored as it is together with the plastic bag P, making it easy to handle.

[0038] Next, the grinding device in the second embodiment of the present invention will be described. The basic configuration is the same as that of the first embodiment described above, so redundant explanations are omitted. As the object to be crushed, in addition to the "scallop shell 5" targeted in the first embodiment described above, shells such as "oyster", "clam", "mussel", "cockle", "pearl oyster", "abalone", etc., foods such as rice, raw materials for pharmaceuticals and cosmetics, hard objects such as bones and rocks, and other objects targeted by known crushing devices are widely included. That is, it widely includes those that can be crushed by the crushing mechanism 80 and the like described in the first embodiment above.

[0039] In addition, although not exemplified one by one, the present invention may be implemented with various modifications within the scope not departing from its gist. For example, the shape, size, number, position, material, etc. of each component may be appropriately changed as long as the effects of the present invention are achieved.

Explanation of Reference Numerals

[0040] 1 Scallop shell crushing device 2 Stand 3 Motor 4 Control panel 5 Scallop shell 5F Crushed scallop shell 10 Container 11 Inlet part 12 Outlet part 13 Inner peripheral surface of side wall 14 Bottom surface 20 Cover 21 Connecting part 22 Stopper part 23 Cushion part 30 Cover part 31-1 First presser 31-2 Second presser 41 Support column 42 Auxiliary plate part 43 Locking part 50 Slope part 60 Rotating shaft part 70 Center part 80-1 First crushing mechanism part 80-2 Second crushing mechanism part 81-1 First plate-like body part 81-2 Second plate-like body part 82-1 First long rod part 82-2 Second long rod part 83-1 First short rod part 83-2 Second short rod part P vinyl bag S scoop

Claims

【Claim 1】 A container provided with an inlet for the material to be crushed, a lid for the inlet, and an outlet for the crushed material to be discharged, the upper part of the inner peripheral surface of the side wall being a vertical surface and having a tapered shape that narrows downward from the lower end of the vertical surface, comprising the container, inside the container, there are provided a substantially frustum-shaped center part connected to a predetermined rotating shaft part, a first pulverizing mechanism part and a second pulverizing mechanism part formed at positions facing the center part, the first pulverizing mechanism part and the second pulverizing mechanism part each include a plate-like body part that extends from the center side of the center part toward the outside and is provided substantially parallel at a height position of 14 mm to 20 mm from the bottom surface of the container, a long rod part that stands on the center side of each plate-like body part, and a short rod part that stands on the outside of the long rod part, the height dimensions of the center part and the long rod part are substantially the same, vertical slits are provided at substantially equal intervals on the inner peripheral surface of the side wall, it includes a cover part that covers the outlet part from the outside of the container, a step corresponding to the thickness dimension of the side wall of the container is formed on the inner surface side of the cover part and the periphery of the outlet part, it includes a slope part that serves as a guide for discharging the crushed material to the outside of the container, it includes a plurality of locking parts for locking a storage bag for storing the crushed material that has passed through the slope part, a device for crushing the shells of scallops.

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