JP7212348B2 - shellfish sorting equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to a shellfish sorting apparatus used for sorting juvenile scallops from foreign substances other than juvenile scallops, especially scallops.

In the cultivation of scallops, operations of seedling collection, intermediate cultivation, and main cultivation are performed before shipping, and during this period, multiple selection operations are required according to the growth of the shellfish. The first sorting work is to sort out the young scallops taken out from the seedling collector from the foreign matter, and this work is usually called "temporary sorting" work. The juvenile scallops at this stage have a shell length of 10 mm or less, for example, 3 mm to 5 mm, and a weight of 0.1 g to 0.2 g even when seawater is included. These juvenile scallops are light and in the shape of a thin disc with a nearly flat shell surface. It sticks to a person's hand or equipment. Therefore, such small scallop spats are difficult to temporarily sort by machine, and are usually sorted manually in seawater.

By the way, during the temporary sorting operation, the main purpose is to sort out scallop juveniles and organisms other than scallop juveniles. Since scallops grow by taking the same food as scallop juveniles, it is necessary to remove them as early as possible so as not to adversely affect the growth of scallop juveniles. In order to separate the scallop juveniles and the scallops when they are larger than the scallops, the scallop juveniles are left on a sieve and the scallops are dropped to separate them, for example, as in the apparatus proposed in Patent Document 1. can be used.

On the other hand, when the shellfish is larger than the juvenile scallops, the device proposed in Patent Document 2, for example, can be used to separate the two. This device makes use of the difference in shape between scallop spats, which are thin disk-shaped, and scallop spats, which are rugby ball-shaped. The scallop fry are sorted by dropping them downward from the slit. A plurality of such devices are sold with different slit widths so that they can be used according to the degree of growth of scallop spats and scallops.

JP-A-2000-237686 Utility Model Registration No. 3059578

A problem with the method of sorting thin disc-shaped juvenile scallops and rugby ball-shaped scallops by utilizing the difference in shape between them is that the sizes of the scallops vary greatly. At the time of temporary sorting work, large and small size shellfish are often mixed. There is a mixture of various sizes, ranging from small oyster shells. Therefore, if a narrow slit is used, even small scallops can be separated from juvenile scallops, but the juvenile scallops do not easily pass through the slits, hindering the sorting operation. On the other hand, when a wide slit is used, the juvenile scallops easily pass through the slit, but the small scallops are not separated and are mixed with the juvenile scallops. If a large amount of shellfish is mixed with the young scallops, it is necessary to separate the shellfish manually in the post-process, which greatly reduces the workability of the temporary sorting operation.

The present invention provides a sorting device capable of temporarily sorting a large number of juvenile scallops in a short time using a single compact device, even when juvenile scallops of various sizes are mixed in. The task is to provide

The problem of the present invention can be solved by adopting a configuration in which the gap sieve is arranged in the upper stage and the hole size sieve is arranged in the lower stage.
The present invention provides a sorting device for sorting objects to be sorted and foreign matter. This sorting apparatus is capable of sorting objects to be sorted and foreign matter by utilizing the difference in shape between them. This sorting device includes a first sorting section having a plurality of elongated gaps, a second sorting section arranged under the first sorting section and having a plurality of holes, and a first sorting section and a second sorting section. and a vibrating section for vibrating the sorting section. The width of the plurality of gaps provided in the first sorting section is determined so as to correspond to the thickness of the objects to be sorted, so that the objects to be sorted and foreign matter smaller than them can pass through. However, foreign objects larger than the objects to be sorted are not allowed to pass through. On the other hand, the sizes of the plurality of holes provided in the second selection section are determined so that the foreign objects that have passed through the first selection section can pass through, but the objects to be sorted do not pass through.

In one embodiment, in the present sorting device, one or both of the first sorting section and the second sorting section are preferably inclined. In one embodiment, the first sorting station and the second sorting station can be arranged with inclinations in the same direction, in which case, between the first sorting station and the second sorting station In addition, it is preferable to further include an intermediate section for moving the objects to be sorted and foreign matter that have passed through the first sorting section to near the top of the second sorting section. The intermediate section can be an inclined plate having a slope opposite to that of the first sorting section and the second sorting section.

In one embodiment, the sorting device preferably further comprises a sprinkler unit above the first sorting unit. The water sprinkling part has a holding part capable of holding water inside, and the holding part may have a plurality of water sprinkling holes arranged in a direction transverse to the length direction of the gap of the first screening part on the lower surface. preferable. In the holding portion, it is more preferable that the plurality of water sprinkling ports arranged in the direction transverse to the length direction of the gap are further arranged in a plurality of rows in the length direction of the gap. It is further preferable that the sprinkler section has a moving section that reciprocates the holding section in a direction transverse to the lengthwise direction of the gap of the first sorting section.

In one embodiment, the first sorting section preferably has a sorting unit including a plurality of rod-shaped members and a rod-shaped member support. The plurality of rod-shaped members are arranged substantially parallel with a gap therebetween, and the rod-shaped member supporting portion supports each of the plurality of rod-shaped members so that the gaps between the plurality of rod-shaped members are maintained. It is preferable that a plurality of first sorting units with different widths of gaps are prepared, and in one embodiment, the sorting device includes a plurality of sorting units with different predetermined support positions, and these sorting units It is preferably configured so that each can be interchangeably attached. In another embodiment, the sorting device includes a plurality of rod-shaped member supports having different predetermined support positions, and is preferably configured such that each of these rod-shaped member supports can be exchangeably attached. .

In one embodiment, the second sorting section preferably includes a plate-like body having a plurality of holes. Preferably, the sorting apparatus includes a plurality of plate-like bodies having different hole sizes, and is configured such that each of the plurality of plate-like bodies can be exchangeably attached.

According to the present invention, a series of work processes for sorting scallop juveniles and other foreign matter, especially scallops, can be realized in a short time using one compact device, so that scallop juveniles can be stressed. It is possible to perform a large amount of sorting processing with high accuracy without giving

1 schematically shows the structure of a sorting device according to an embodiment of the present invention, (a) is a front view, (b) is a plan view, (c) is a left side view, and (d) is a right side view. be. A gap sieve (first sorting unit) arranged in the upper stage in the sorting device of FIG. 1 is shown, (a) is a perspective view of the gap sieve unit, and (b) is a wide gap between the two gap sieve units. different. 1. It is a perspective view of the plate-shaped body of the hole size sieve (2nd selection|selection part) arrange|positioned at the lower stage in the screening apparatus of FIG. 2 shows a vibrating mechanism used in the apparatus of FIG. 1, (a) is a schematic configuration diagram of the vibrating mechanism, and (b) is a perspective view of an eccentric disk used in the vibrating mechanism. FIG. The crank rod of a vibrating mechanism is shown, (a) is a perspective view of a crank rod and wheel part structure, (b) is a perspective view of another form of crank rod. FIG. 2 shows a sprinkler unit arranged above the upper gap sieve in the device of FIG. 1 , (a) is a perspective view of the sprinkler box as seen from below, and (b) is the operation of the sprinkler unit. FIG. 2 is a schematic diagram for explaining a process of sorting scallop spats and scallops in the apparatus of FIG. 1 ;

Embodiments of the present invention will be described in detail below with reference to the drawings.
FIG. 1 shows the structure of a sorting device 10 (hereinafter referred to as device 10) according to one embodiment of the present invention. 1(a) is a front view, FIG. 1(b) is a plan view, FIG. 1(c) is a left side view, and FIG. 1(d) is a right side view. In these drawings, not all specific structures are shown in order to avoid cluttering the drawings. For example, in FIGS. 1(a) and 1(b), roller guides 225 (shown in FIG. 1(c)) along which rollers 224 of spraying section 22 run are not shown.

The apparatus 10 utilizes the difference in shape between scallop juveniles, which have a thin disk-like shape, and scallops, which have a rugby ball-like shape, to accurately separate the two. In the device 10, the gap sieve is placed in the upper stage and the pore size sieve is placed in the lower stage. In the gap sieve on the upper stage, thick and large scallops that do not pass through the gap are left, and juvenile scallops that are thinner than the width of the gap (that is, objects to be sorted) and scallops that are smaller than the gap are allowed to pass. In the hole size sieve in the lower stage, juvenile scallops do not pass through the holes, so they remain on the sieve, and scallops smaller in size than the holes pass through. Therefore, by using this apparatus, it is possible to sort large-sized oysters, young scallops to be sorted, and small-sized oysters in a single sorting process.

In addition, since the apparatus 10 employs a special vibration mechanism that can vibrate not only two-stage sieves but also three-stage or more sieves with a simple structure, the vibration of the entire apparatus can be reduced while reducing the failure frequency. can be effectively reduced. Furthermore, by providing a sprinkling part above the gap sieve on the upper stage and allowing water to flow from the sprinkling part with a moderate force, the small and light young scallops are prevented from sticking to the device and scattering. can be properly separated from foreign matter and the like.

The apparatus 10 includes a gap screen (first sorting section) 14 above and a hole size screen (second sorting section) 16 below the gap screen 14 inside the sheath 12 . The gap sieve 14 and the hole size sieve 16 are placed on roller guides 122 in which rollers 146 and 166 provided on respective support frames 145 and 165 are fixed inside the exterior body 12, and vibrating units described later. 18 to vibrate on the roller guide 122 . The gap sieve 14 and the hole size sieve 16 are preferably slanted in the same direction with respect to the horizontal direction as shown in FIG. 1, but are not limited to this and are slanted in opposite directions. Either of them may be non-inclined (that is, horizontal), or either one of them may be inclined. Preferably, the gap sieve 14 and the hole size sieve 16 are provided with handles 147 , 167 for pulling the gap sieve 14 and the hole size sieve 16 out of the outer body 12 , respectively.

The gap sieve 14 is configured by mounting a gap sieve unit (selection unit) 144 shown in FIG. The gap sieve unit 144 includes a plurality of square pipes (bar-shaped members) 141 . The plurality of square pipes 141 have a length in the direction of inclination of the gap sieve 14, are arranged substantially parallel to each other with a gap 142 therebetween, and have a substantially square cross-sectional shape. The thickness of the square pipe 141 is determined so as to increase the number of gaps per unit area of the gap sieve 14 in consideration of strength and processing capacity. things are used. The length of the square pipe 141 is determined in consideration of strength, processing capacity, overall size of the apparatus 10, etc., and in one embodiment, approximately 700 mm can be used. As the rod-shaped member, for example, a member having a circular cross section, other polygonal shape, or an angle shape can be used. It is more preferable to use a square pipe in order to enable highly accurate sorting without causing a problem (which may occur in the case of ). The material of the square pipe 141 is not particularly limited as long as it is lightweight, does not corrode, and is strong enough to prevent bending. For example, stainless steel is preferably used.

The gap sieve unit 144 has a square pipe support portion (bar-shaped member support portion) 143 that supports the plurality of square pipes 141 . The square pipe support portion 143 has a plurality of notches (support positions) 143a formed so as to correspond to the shape of the square pipe 141 as shown in FIG. 2(b). The notch 143a can support each of the square pipes 141 with one corner of the side surface of the square pipe 141 positioned directly below. The cutouts 143a are provided in the square pipe support portion 143 at intervals such that the gap 142 between the adjacent square pipes 141 placed thereon has an appropriate width. The gap sieve unit 144 places the square pipes 141 on the plurality of cutouts 143a of the square pipe support portion 143, and welds the square pipes 141 and the square pipe support portions 143 together or attaches the square pipes 141 to the square pipes by using screws or the like. It can be configured by fixing to the support portion 143 or the like.

The gap 142 is set to a width corresponding to the thickness of the young scallops to be sorted. Specifically, the gap 142 is set to be slightly wider than the maximum value of the thickness of a plurality of juvenile scallops to be sorted. Therefore, the juvenile scallops placed on the gap sieve unit 144 pass through the gap 142 with their length direction or width direction (i.e., radial direction crossing the thickness direction) along the length direction of the gap 142, Shellfish whose thickest part is thicker than the gap 142 remain on the gap sieve unit 144 without passing through. The gap 142 is appropriately set in consideration of work efficiency. If the gap 142 is set to the very limit of the thickness of the juvenile scallops, it becomes difficult for the juvenile scallops to pass through the gap 142. If the gap 142 is too wide, the number of scallops that pass together with the juvenile scallops increases.

In the device 10, it is preferable that a plurality of gap sieve units 144 having different widths of the gaps 142 are prepared. That is, a plurality of gap sieve units 144 in which a plurality of square pipes 141 are attached in advance to a plurality of square pipe support portions 143 with different positions of the notch portions 143a are prepared, and the thickness of the scallop juvenile shells to be screened is adjusted. Therefore, it is preferable to use a gap sieve unit 144 in which the gap 142 between adjacent square pipes 141 has a width corresponding to the thickness thereof. For example, a plurality of gap sieve units 141 having gaps 142 between the square pipes 141 of 1.0 mm, 1.5 mm, 2.0 mm, and 3.0 mm are prepared in advance, and the thickness of the scallop fry to be screened is adjusted. By properly using these gap sieve units 141 according to need, it is possible to sort with high accuracy.

As another form, a plurality of square pipe support portions 143 having different positions of the notch portions 143a are prepared, and if necessary, a plurality of square pipes that can be used in common for these square pipe support portions 143 are provided. 141 may be replaced for use. That is, a plurality of square pipe support portions 143 having different notch portions 143a are prepared, and the gap 142 between the adjacent square pipes 141 is adjusted according to the thickness of the young scallops to be sorted. A plurality of square pipes 141 can be attached to a square pipe support portion 143 that can be made wide enough to be used.

Below the interstitial sieve 14 is positioned a pore size sieve 16, as shown in FIG. The hole size sieve 16 is configured by attaching a plate-like body 161 having a plurality of holes to the inside of a support frame 165 . The plate-like body 161 can be, for example, a net 161 as shown in FIG. 3, a punched plate obtained by punching a metal plate, or the like, but is not limited to these. The material of the plate-like body 161 is not limited, and metal, resin, or the like, for example, can be appropriately used according to necessity.

A plate-like body 161 typically using a wire mesh has a plurality of holes 162, and the size of the plurality of holes 162 is determined by the diameter of the young scallops to be screened (that is, the direction transverse to the thickness direction). length). Specifically, the plurality of holes 162 are set to be slightly smaller than the minimum value of the diameter of young scallops to be sorted. Therefore, juvenile scallops and juvenile scallops that have passed through the gap sieve 14 fall onto the plate-like body 161 of the hole-size sieve 16 , while juvenile scallops do not pass through the holes 162 and remain on the plate-like body 161 . , and a shellfish smaller in size than the hole 162 passes through the plate-like body 161 . The plurality of holes 162 are appropriately set in consideration of work efficiency. If the hole 162 is made too small, it is difficult for the shellfish to pass through, and the work of separating the remaining shellfish from the juvenile scallops in the subsequent process becomes complicated. The shape of the plurality of holes 162 is not limited, and may be rectangular, circular, or the like.

It is preferable that a plurality of plate-like bodies 161 having holes 162 of different sizes are prepared. That is, a plurality of plate-like bodies 161 having a plurality of holes 162 of different sizes are prepared, and the plate-like body 161 having holes 162 having a size corresponding to the diameter of juvenile scallops to be sorted is used. preferably. For example, in the case of the net 161 shown in FIG. 3, a plurality of nets 161 each having square holes 162 with lengths of 3.0 mm, 4.0 mm, 5.0 mm and 6.0 mm are prepared in advance. These nets 161 can be selectively used according to the diameter of the scallop spat.

As shown in FIG. 1, providing an intermediate section 20 between the gap screen 14 and the hole size screen 16 when the gap screen 14 and the hole size screen 16 are mounted to tilt in the same direction. is preferred. An intermediate section 20 is provided to move the scallop spats and shellfish that have passed through the interstitial screen 14 to near the top of the slanted hole size screen 16 . 1 is preferably used as the intermediate section 20, but for example a horizontal conveyor with belts moving in the direction opposite to the direction of movement of the scallop spats in the gap sieve 14 and the hole size sieve 16. may be used. When the intermediate portion 20 is a slanted plate, it is preferable that a water spray pipe (not shown) is provided near the top of the slanted plate.

Apparatus 10 includes a vibrating mechanism for vibrating gap sieve 14 and pore size sieve 16 . FIG. 4(a) shows the vibration mechanism used in the device 10. FIG. Since this vibrating mechanism can obtain a plurality of linear motions using only one axis, it has a simple and compact structure and can be used not only for two-stage sieves such as the device 10 but also for three-stage or more sieves. sieves can be vibrated independently of each other. In a conventional sorting apparatus, a general crank mechanism is used as a mechanism for vibrating the sieve. This crank mechanism is a mechanism that converts the rotary motion of a motor into linear motion. It is rotatably fixed to the shaft and has a structure in which a sieve is attached to the other end of the rod end. In such a conventional crank mechanism structure, only two systems of linear motion can be obtained with one axis, and in order to obtain three or more systems of linear motion, a configuration with two or more shafts is required. Therefore, the structure becomes complicated, the cost increases, and the failure frequency increases. Also, for example, when trying to obtain three systems of linear motion, one of the two axes is in charge of two systems of linear motion, and the other of the two axes is in charge of one system of linear motion. Due to the poor crank arrangement, the vibration of the main body is large, and the failure is frequent. The vibrating mechanism employed in this device 10 can solve these problems.

The vibrating mechanism of the device 10, as shown in FIG. 12 and a vibrating portion 18 for reciprocating the gap sieve 14 and the hole size sieve 16 back and forth to generate vibrations in cooperation with the rollers 146, 166 and the roller guides 122. including. The vibrating section 18 is preferably separated from the gap screen 14 and the hole size screen 16 by a partition plate 123 .

As shown in FIG. 4A, each of the roller guides 122 has an upper surface 122a on which the rollers 146, 166 can travel. is provided with a recess 122b. The gap sieve 14 and the hole size sieve 16 are reciprocated back and forth (that is, left and right in FIG. 4A) by the operation of the vibrating section 18, and accordingly the rollers 146 and 166 are reciprocated on the upper surface 122a. It passes through the concave portion 122b of the roller guide 122 on the way. Therefore, in the gap sieve 14 and the hole size sieve 16, in addition to the back-and-forth reciprocating vibration, the vertical vibration caused by passing through the concave portion 122b is generated independently of each other.

Materials for the rollers 146 and 166 and the roller guide 122 are not particularly limited as long as they are lightweight, durable, and corrosion-resistant. In the apparatus 10, there are four rollers 146, 166 on each side of each support frame 145, 165 (eight rollers in total for both sieves), and eight roller guides 122 at positions corresponding to the rollers 146, 166. provided, but not limited to these numbers.

The vibrating section 18 has a motor 181 and transmission mechanisms 182 to 185 for converting the rotational motion of the motor 181 into the reciprocating motion of the gap sieve 14 and the hole size sieve 16, as shown in FIGS. . The transmission mechanism includes a chain 182, a shaft 183 erected on the side of the gap screen 14 and the hole size screen 16, for example rotated by the chain 182, and corresponding to the gap screen 14 and the hole size screen 16 in the middle of the shaft 183. It has two eccentric discs 184 arranged in position and two crank rods 185 that convert the eccentric rotary motion of the eccentric discs 184 into reciprocating motion and transmit it to the gap sieve 14 and the hole size sieve 16 respectively.

Here, FIG. 5(a) shows a perspective view of the crank rod 185. FIG. The crank rod 185 has a base plate 185a in which a plate-like portion 187 is connected to an annular portion 186 having an opening 185b in the center, and a plurality of wheel portions 188 attached to the annular portion 186 around the opening 185b. The annular portion 186 is provided with eight wheel shaft holes 185c in the circumferential direction, and the wheel portion 188 is rotatably attached to each of the holes 185c. The number of holes 185c and wheel portions 188 is not limited to eight, and can be appropriately selected in consideration of the size of device 10, the number of revolutions of shaft 183, and the like. The wheel 185c is attached so that a portion of the wheel 185c protrudes from the edge of the opening 185b toward the center of the opening 185b. One end of a connecting rod 185 d is attached to the plate-like portion 187 on the opposite side of the annular portion 186 , and the other end of the connecting rod 185 d is rotatably fixed to the support frames 145 and 165 .

FIG. 5(a) also shows an exploded view showing the structure of the wheel portion 188. As shown in FIG. In the wheel portion 188, a holding ring 188b, a wheel 188c with a collar 188d inserted into the central hole, and a holding ring 188e are laminated in this order on one side of the substrate 185a. A bolt 188a is inserted so as to pass through the wheel hole 185c of the substrate 185a. On the other side of the substrate 185a, a flat washer 188f is attached to the bolt 188a, and finally a nut 188g is tightened. The material of the wheel 188c is not limited as long as it has wear resistance, lubricity, and corrosion resistance, and metal, synthetic resin, ceramics, etc. can be used as appropriate, preferably polyacetal resin used as a resin bearing. , polyethylene resin, polypropylene resin, phenol resin, polyester resin, tetrafluoroethylene resin, and the like are used. The material of the collar 188d is not limited as long as it has wear resistance and corrosion resistance, and metal, synthetic resin, ceramics, etc. can be used as appropriate, and stainless steel is preferably used.

Returning to FIG. 4, the shaft 183 is provided with eccentric discs 184 at each of the positions corresponding to the gap sieve 14 and hole size sieve 16 . As shown in FIG. 4B, the eccentric disc 184 is provided with a circular hole 184a having a central axis (eccentric point of the eccentric disc 184) at a position different from the central axis of the eccentric disc 184. A shaft 183 is passed through the hole 184a and fixed. A groove 184b is provided on the outer circumference of the eccentric disk 184, and the height of the groove 184b is set so that the outer circumference of the wheel 188c of the crank rod 185 enters the groove 184b. The eccentric disc 184 is placed in the eccentric disc opening 185b of the crank rod 185 so that the grooves 184b receive the outer circumferences of the eight wheels 188c.

The vibrating section 18 operates as follows. Motion of the rotating shaft of motor 183 is transmitted to shaft 183 by chain 182, for example. As the shaft 183 rotates, the eccentric disk 184 attached to the shaft 183 eccentrically moves around the central axis (eccentric point) of the hole 184a. At this time, since the eccentric disk 184 rotates along the wheels 188c inside the plurality of wheels 188c of the crank rod 185, the crank rod 185 rotates to the support frames 145 and 165 as the eccentric disk 184 moves eccentrically. With the other end of the connectable connecting rod 185d as a fulcrum, it reciprocates back and forth (that is, the left-right direction of FIG. 4(a)) while swinging left and right (that is, the direction perpendicular to the paper surface of FIG. 4(a)). exercise. As a result, the support frames 145 and 165 connected to the other end of the connecting rod 185d vibrate reciprocally in the horizontal direction of FIG. 4(a).

Here, the two eccentric discs 184 attached to the shaft 184 are arranged so that their eccentric phases during rotation are out of phase with each other by 180° (that is, the portion from the eccentric point to the outer peripheral edge furthest away from the shaft 183 is arranged outwardly). , so that as the shaft 183 rotates, the gap sieve 14 and the hole size sieve 16 move in opposite directions. Therefore, the vibration of the gap sieve 14 and the vibration of the hole size sieve 16 cancel each other out, and the vibration of the apparatus 10 can be reduced.

The device 10 has a structure that vibrates the two-stage sieve. If this vibrating mechanism is used, the number of eccentric discs 184 attached to the shaft 183 and the number of crank rods 185 combined with the eccentric discs 184 are increased. A structure for vibrating three or more stages of sieves can be easily obtained. In the case of three stages, the eccentric phases of the three eccentric discs 184 are shifted by 120° from each other (the portions of the eccentric discs 184 from the eccentric point to the outer peripheral edge that are farthest from each other are 120° from the shaft 183 toward the outside. In the case of four stages, the phases of the four eccentric discs 184 are shifted by 90° from each other (the portion of the eccentric discs 184 from the eccentric point to the farthest outer peripheral edge is the shaft 183 outwardly from each other in directions 90° apart from each other). In this crank mechanism, the vibration of the device can be reduced as the number of stages increases.

In the crank rod 185, instead of the wheel 188c of the wheel portion 188 shown in FIG. 5(a), an annular plate 189 shown in FIG. 5(b) can be used. The annular plate 189 is a circular plate-like body having an opening 189a inside. In FIG. 5B, the annular plate 189 is configured by combining two semicircular parts, but it may be configured as one plate-like body. The diameter of the opening 189a is smaller than the diameter of the eccentric disk opening 185b, so the inner edge of the opening 189a of the torus 189 protrudes from the edge of the opening 185b toward the center of the opening 185b.

The thickness of the torus 189 is the same as that of the wheel 188c, and the inner edge of the opening 189a fits into the groove 184b of the eccentric disk 184. As shown in FIG. As with the wheel 188c, the material of the torus 189 is not limited as long as it has high wear resistance, lubricity, and corrosion resistance, and metal, synthetic resin, ceramics, etc. can be used as appropriate. Polyacetal resin, polyethylene resin, polypropylene resin, phenol resin, polyester resin, tetrafluoroethylene resin, etc., which are used as resin bearings, are preferably used.

Returning to FIG. 1, the apparatus 10 may be provided with a hopper 26 above the gap sieve 14 for throwing into the gap sieve 14 objects to be sorted, including scallop spats and scallops, which are objects to be sorted. preferable. Preferably, the hopper 26 is provided with a water spray pipe (not shown) for flowing water so that the objects to be sorted can easily come out of the hopper 26 . At the end of the gap sieve 14 opposite the hopper 26, there is a discharge section 28 for discharging from the device 10 large-sized clams that have moved over the gap sieve 14 without passing through the gaps 142 of the gap sieve 14. is preferably provided. Also, at the end of the hole size sieve 16, a take-out unit 30 is provided for taking out from the device 10 the juvenile scallops that have moved over the hole size sieve 16 without passing through the plurality of holes 162 of the hole size sieve 16. is preferred.

Since the young scallops and scallops thrown onto the gap sieve 14 from the hopper 26 are both small and light, they cling to each other due to surface tension to form lumps or cling to the device 10, thereby closing the gap. Vibration and tilting of sieve 14 and pore size sieve 16 alone may be difficult to separate. Therefore, it is effective to separate them while rinsing them with water. However, since high-pressure water may scatter the small and light young scallops, it is preferable to spray water at low pressure. Also, if the juvenile scallops on the upper gap sieve 14 are only partially sprinkled with water, the juvenile scallops do not drop from the gaps 142 of the gap sieve 14 and are flowed downstream in the form of lumps and discharged from the discharging section 28. It is preferable to sprinkle the entire gap sieve 14 with water because the number of shellfish increases. Furthermore, from an economic point of view, it is preferable to use as little water as possible.

As a configuration that satisfies the above conditions, it is preferable that a sprinkler 22 is provided above the gap sieve 14 as shown in FIG. The sprinkler section 22 has a sprinkler box (holding section) 221 having a space for holding water therein. The sprinkler box 221 is preferably a thin box whose lower surface is large enough to cover the entire surface of the gap sieve 14, and has a water supply port 223 on its upper surface for supplying water to the internal space. It has a water sprinkling port 222 for spraying water downward on the bottom surface.

As shown in FIG. 6(a), it is preferable that a plurality of water sprinkling ports 222 be arranged in a direction crossing the length direction of the gaps 142 of the gap sieve 14 (the width direction of the gap sieve 14). The intervals are preferably equal intervals. Further, it is more preferable that the plurality of water sprinkling ports 222 arranged at regular intervals in the direction transverse to the length direction of the gap 142 are further arranged in a plurality of rows in the length direction of the gap 142 . In this way, a plurality of water sprinkling ports 222 are provided at positions corresponding to at least the width direction of the gap sieve 14 , more preferably in the length direction, so that the water from the watering box 221 can be spread over a wide range of the gap sieve 14 . can be watered.

Even when a plurality of water sprinkling ports 222 are provided, if the watering box 221 is fixed, the water from the water sprinkling ports 222 is sprinkled only at the fixed positions of the gap sieve 14.例文帳に追加Therefore, it is preferable that the sprinkler box 221 can be reciprocated in the width direction of the gap sieve 14 . By moving the water sprinkler box 221 in the width direction of the gap sieve 14, the water from the plurality of water sprinkling ports 222 is sprinkled over the entire range in the width direction of the gap sieve 14, and a more effective watering effect is obtained. be done. As described above, the water held inside the sprinkler box 221 is sprayed from the plurality of sprinkling ports 222, and by moving the sprinkler box 221 in the width direction, low-pressure water can be sprayed into the gaps with a small amount of water. The entire sieve 14 can be flowed.

As shown in FIG. 6B, the moving unit 24 that moves the sprinkler box 221 has a motor 241 and crank mechanisms 242 and 243 that convert the rotational motion of the motor 241 into reciprocating motion. One end of the connecting plate 243 of the crank mechanism is rotatably attached to the vicinity of the outer circumference of the rotating plate 241 attached to the rotating shaft of the motor 241, and the other end is rotatably attached to the sprinkler box 221. It is Further, a roller 224 is rotatably attached to a side portion parallel to the direction of movement of the sprinkler box 221, and a roller guide 225 having a length in the direction of movement of the sprinkler box 221 is attached to the upper portion of the exterior 12. 224 preferably run over roller guides 225 . Such a configuration allows the sprinkler box 221 to reciprocate in a direction transverse to the lengthwise direction of the gaps 142 of the gap sieve 14 .

FIG. 7 shows a series of steps in which scallop spats and scallops are sorted in apparatus 10 . First, the objects to be sorted MS containing scallop spat S taken out from the seedling collector are thrown into the hopper 26 after mud, seaweed, etc. are washed away. The objects to be sorted MS put into the hopper 26 contain scallop shells S and conch shells M of various sizes. The material to be sorted MS is preferably swept by water from a water spray pipe provided in the hopper 26 and rides on the vibrating crevice sieve 14 which is arranged at an angle.

The objects to be sorted MS on the gap sieve 14 move downward (to the left in FIG. 7) along the slope on the vibrating gap sieve 14 . From above the gap sieve 14, water W is sprayed from a spraying unit 22 that reciprocates in the lateral direction (direction perpendicular to the paper surface of FIG. 7). The scallops M are moved without sticking to the gap sieve 14 in a loose state without becoming lumpy. The juvenile scallops S move on the gap sieve 14, and when the radial direction faces the lengthwise direction of the gap 142, the juvenile scallops S pass through the gap 142 wider than the thickness of the juvenile scallops S and move downward. Fall. At the same time, the small scallop M that is thinner than the gap 142 also falls together with the young scallop S. The shellfish M of a size that cannot pass through the gap 142 move along the slope of the gap sieve 14 and are discharged from the shellfish discharging section 28 .

The juvenile scallops S and small scallops M that have passed through the gaps 142 of the gap sieve 14 fall onto the inclined plate 20 and are preferably washed away by water from a watering pipe provided near the top of the inclined plate 20. and moves downward (to the right in FIG. 7) along the inclined plate. The scallop spats S and scallops M that have fallen from the lower end of the inclined plate 20 then ride near the top of the vibrating hole size screen 16 arranged at an angle.

The juvenile scallops S and scallops M on the hole-size screen 16 move downward (to the left in FIG. 7) on the vibrating hole-size screen 16 along the slope. The shellfish M fall from holes 162 larger than the shellfish M while moving along the slope on the hole size screen 16 . On the other hand, since the size of the hole 162 is set to be smaller than the diameter of the juvenile scallop S, the juvenile scallop S does not pass through the hole 162 and moves downward along the slope of the hole size sieve 16 to remove the juvenile scallop. It is discharged from the exit 30 . In this way, a large amount of juvenile scallops S can be sorted out in a short period of time in a single work process from the object MS containing juvenile scallops S and various sizes of scallops M.

REFERENCE SIGNS LIST 10 Scallop fry sorting device 12 Exterior 122 Roller guide 123 Partition plate 14 Gap sieve 141 Square pipe 142 Gap 143 Square pipe support 143a Notch 144 Gap sieve unit 145 Support frame 146 Roller 147 Handle 16 Hole size sieve 161 Plate 162 Hole 165 Support frame 166 Roller 167 Handle 18 Vibrating part 181 Motor 182 Chain 183 Shaft 184 Eccentric disk 185 Crank rod 185a Base plate 185b Eccentric disk opening 185c Wheel shaft hole 185d Connecting rod 188 Wheel part 188a Bolt 188b, 188e Holding ring 188c Wheel 188d Collar 188f Flat washer 188g Nut 189 Disk 20 Inclined plate 22 Sprinkling part 221 Sprinkling box 222 Sprinkling port 223 Water supply port 224 Roller 225 Roller guide
24 Moving part 241 Motor 242 Disk 243 Connecting plate 26 Hopper 28 Shrimp discharge part 30 Young scallop discharge part

MS Material to be sorted S Young scallop M Shrimp W Water

Claims (11)

A sorting device that sorts objects to be sorted and foreign matter by utilizing the difference in their shapes,
a first sorting section having a plurality of elongated gaps;
a second sorting section disposed below the first sorting section and having a plurality of holes;
a vibrating unit that vibrates the first sorting unit and the second sorting unit ;
provided above the first sorting unit and having a holding unit capable of holding water therein, the holding unit extending in a direction crossing the length direction of the plurality of gaps of the first sorting unit; a reciprocating water sprinkler; and
with
The plurality of gaps have a length in the traveling direction of the object to be sorted consisting of the objects to be sorted and the foreign matter, and are arranged substantially parallel to each other with a gap between them. Formed inside the valley made in
The width of the plurality of gaps is determined so that the objects to be sorted can pass through by setting the width corresponding to the thickness of the objects to be sorted,
The sizes of the plurality of holes are determined so as to allow the passage of foreign objects that have passed through the first sorting unit and prevent the passage of objects to be sorted,
Sorting device. 2. The sorting device according to claim 1, wherein one or both of said first sorting section and said second sorting section are inclined. The first sorting unit and the second sorting unit are arranged to be inclined in the same direction,
Between the first sorting unit and the second sorting unit, an intermediate unit for moving the objects to be selected and foreign matter that have passed through the first sorting unit to near the top of the second sorting unit is further provided. prepared,
The sorting device according to claim 2. 4. The sorting device according to claim 3, wherein the intermediate portion is an inclined plate having a slope opposite to that of the first sorting portion and the second sorting portion. 2. The sorting device according to claim 1 , wherein said holding portion has a plurality of water sprinkling ports arranged in a direction crossing the length direction of said gap of said first sorting portion on its lower surface. 6. The sorting device according to claim 5 , wherein in said holding portion, said plurality of watering ports arranged in a direction crossing the lengthwise direction of said gap are arranged in a plurality of rows in the lengthwise direction of said gap. The first sorting unit is
the plurality of rod-shaped members;
and a bar-shaped member supporting portion having a predetermined support position for supporting each of the plurality of bar-shaped members so that the gap between the plurality of bar-shaped members is maintained. Sorting device according to any one of the preceding 6 . 8. The sorting device according to claim 7 , wherein said plurality of rod-shaped members are square pipes having a square cross section. 9. The sorting apparatus according to claim 7 , comprising a plurality of sorting units having different predetermined support positions, and configured such that each of the plurality of sorting units can be exchangeably attached. The sorting device according to any one of claims 1 to 9 , wherein the second sorting unit includes a plate-like body having the plurality of holes. 11. The sorting device according to claim 10 , comprising a plurality of said plate-like bodies having said plurality of holes with different sizes, and configured so that each of said plurality of plate-like bodies can be exchangeably attached.

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