JP2005087075A - Apparatus for shellfish selection - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for shellfish selection, which is compact, lightweight, has excellent handleability and solves problems of crack and closure of shellfish. <P>SOLUTION: The apparatus is equipped with a plurality of rotary selection rollers 19-30 that are arranged parallel at gaps G in the direction perpendicular to a conveying direction 18 and slantingly downward along the conveying direction 18 and a rotary drive means 31 for rotating the selection rollers 19-30. At least one of the adjoining selection rollers 19-30 is rotated in the rotation direction to apply force in the upward direction to shellfishes 13 and 13a positioned on the adjoining selection rollers 19-30, the supplied shellfishes 13 and 13a are transported to the downstream edge without dropping the shellfishes 13 having thickness not smaller than the gaps G while being arranged on the adjoining selection rollers 19-30 and the shellfishes 13a having thickness smaller than the gaps G are dropped to separate the shellfishes. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention relates to a shell sorting apparatus that sorts shells of a predetermined size or more by, for example, supplying shells that are installed on a fishing boat and harvested on the seabed near the fishing boat together with sand and garbage.

Conventionally, the following methods are known as methods for selecting shellfish captured in the sea using a ship. In other words, a diver dives into the seabed where shellfish live, walks along the seabed with a large and long net, and digs up the surface layer of the seabed with a suction hose connected to the ship, Along with the garbage, it is taken into a net cage, and when the inside of the net size reaches a predetermined amount, it floats and is lifted on the ship, and is sorted into shells of a predetermined size by a shell sorting device provided on the ship.
As an example of such a shell sorting device, a number of sorting holes through which shells can pass are formed, and a sorting drum in which spiral conveying blades are attached to the inner peripheral wall surface from the input portion to the discharge portion. Has been known that rotates around a horizontal axis via an external rotational drive source (see, for example, Patent Document 1).
As another shellfish sorting device, there is also known a device equipped with a swinging mechanism for reciprocating and vertically moving a rectangular plate-like sieve screen provided in one or two stages below the charging hopper. (For example, refer to Patent Document 2).

JP 2003-158943 A (FIGS. 1 to 6) Japanese Patent Laying-Open No. 2003-112123 (FIG. 1)

However, the conventional shellfish sorting apparatus still has the following problems to be solved.
Especially in the thing of patent document 1, since the occupation volume of an apparatus is large and also the weight of an apparatus becomes heavy, an apparatus is loaded into a ship at the time of the beginning and end of a fishing season, and is taken down from a ship. It took a lot of work. In addition, there is a problem that shells with open mouths, dead shells, etc. are easily blocked in the sorting holes.
Moreover, in the thing of patent document 2, compared with the thing of patent document 1, it can be made compact and lightweight, and also the problem of obstruction | occlusion is improved considerably, but a shell is not able to be done by rocking | fluctuation of a sieve mesh. There was a problem that it was easy to break.

The present invention has been made in view of such circumstances, and an object thereof is to provide a shell sorting apparatus that is compact and lightweight, has excellent handling properties, and can also improve the problems of shell cracking and shell blocking. To do.

The shell sorting apparatus according to claim 1, wherein the shell sorting apparatus according to claim 1 supplies shells of various sizes together with washing water to sort the shells having a predetermined thickness or more in the transport direction. A plurality of sorting rollers arranged in parallel with a predetermined roller interval in an orthogonal direction and inclined downward along the conveying direction; and a rotation driving means for rotating the plurality of sorting rollers; And rotating at least one of the adjacent sorting rollers in a rotational direction in which an upward force is applied to the shell located between the adjacent sorting rollers. While aligning between the adjacent sorting rollers by rotating the roller, the shell having a thickness greater than or equal to the gap between the adjacent sorting rollers is transported to the downstream end without dropping, while less than the gap The shellfish is dropping separating with is.

According to a second aspect of the present invention, there is provided the shell sorting apparatus according to the first aspect, wherein the roller interval between the adjacent sorting rollers can be adjusted.
The shell sorting apparatus according to claim 3 is the shell sorting apparatus according to claim 1 or 2, wherein the inclination angle of the sorting roller is adjustable in a range of 3 to 15 °. Here, when the inclination angle of the sorting roller is less than 3 °, the processing ability is lowered, whereas when the inclination angle of the sorting roller exceeds 15 °, the sorting efficiency is lowered.
The shell sorting apparatus according to claim 4 is the shell sorting apparatus according to any one of claims 1 to 3, wherein the rotation driving means is partly wound around a circumferential portion of an end portion of the sorting roller on the upstream side of conveyance. A belt and a belt driving mechanism for driving the endless belt are provided.

The shell sorting apparatus according to claim 5 is the shell sorting apparatus according to claims 1 to 4, wherein the rotation directions of the sorting rollers are the same.
The shell sorting apparatus according to a sixth aspect is the shell sorting apparatus according to the first to fourth aspects, wherein the rotation direction of the sorting rollers is sequentially reversed.
The shell sorting device according to claim 7 is the shell sorting device according to any one of claims 1 to 6, wherein the shell is supplied to the sorting roller via an endless pocket conveyor having a feeding portion directly above the installation surface. To do.

The shell sorting apparatus according to claim 8 is the shell sorting apparatus according to claim 7, wherein a loading hopper is provided immediately above the supply portion of the pocket conveyor so that an operator can throw the shell with a scoop. Yes.
The shell sorting apparatus according to claim 9 is the shell sorting apparatus according to any one of claims 1 to 8, further comprising a plurality of other sorting rollers having a roller interval narrower than the roller interval below the plurality of sorting rollers, Another rotation driving means for rotating another plurality of sorting rollers is provided to sort the shellfish in a plurality of stages.

The shellfish sorting apparatus according to any one of claims 1 to 9 has a plurality of sorting rollers arranged parallel to each other at a predetermined roller interval in a direction orthogonal to the transport direction and inclined downward along the transport direction. In addition, since at least one of the adjacent sorting rollers is rotated in a rotational direction in which an upward force is applied to the shell located between the adjacent sorting rollers, the shells supplied between the adjacent sorting rollers are aligned. Shells having a thickness greater than or equal to the gap between the sorting rollers are transported to the downstream end without falling, while shells having a thickness less than the gap between the sorting rollers are dropped and separated during the transportation. The Therefore, since the shells are sorted by a plurality of rotating sorting rollers, there is no problem of blockage by the conventional sorting holes, and the problem that the shells are easily broken by the swing of the sieve screen can be solved, and it is compact and lightweight. As a result, there is no need to load or unload the device on the ship.

In particular, the shell sorting apparatus according to claim 2 is configured so that the roller interval between adjacent sorting rollers can be adjusted, so that shells with different sizes can be sorted, thereby improving the usability of the apparatus.
In the shell sorting apparatus according to claim 3, since the tilt angle of the sorting roller can be adjusted in the range of 3 to 15 °, the tilt of the sorting roller suitable for the processing conditions such as the processing amount of the shell and the shape of the shell. The angle can be selected, which improves the sorting efficiency.
In the shell sorting apparatus according to claim 4, since the endless belt is wound around a part of the circumferential portion of the upstream end of the sorting roller and the sorting roller is rotated, the shell is impacted via the sorting roller. Therefore, cracking of the shell can be suppressed.

In the shell sorting apparatus according to claim 5, since the rotation direction of the sorting roller is the same, the rotation mechanism of the sorting roller is simplified, and all the sorting rollers can be used effectively, so that the processing capability is increased. .
Since the shell sorting apparatus according to claim 6 reverses the rotation direction of the sorting rollers sequentially, the adjacent sorting rollers can apply an upward force to the shell located therebetween, and as a result, The effect of alignment is increased and the accuracy of sorting is improved.
The shell sorting apparatus according to claim 7 performs the supply of the shell to the sorting roller via an endless pocket conveyor having a feeding section directly above the installation surface, so that the shell feeding operation to the sorting roller is simplified. Is done.

The shell sorting apparatus according to claim 8 is provided with a loading hopper that allows an operator to put the shells with a scoop immediately above the supply portion of the pocket conveyor, so that the shell feeding operation to the pocket conveyor is facilitated. .
The shell sorting apparatus according to claim 9 is provided with another plurality of sorting rollers having a narrow roller interval below the plurality of sorting rollers and another rotation driving means for rotating the plurality of sorting rollers. Since the sorting is performed in multiple stages, the shell sorting effect is improved.

Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
1 is a front view of a shell sorting apparatus according to an embodiment of the present invention, FIG. 2 is a plan view of the shell sorting apparatus, FIG. 3 is a left side view of the shell sorting apparatus, FIG. Is a right side view of the shellfish sorting device, FIGS. 5A and 5B are a schematic front view, a side view, and FIG. 6, respectively, showing the configuration of the rotation driving means of the sorting roller of the shellfish sorting device. FIG. 7 is an explanatory diagram of the mechanism of alignment and separation by rotation of the sorting roller, and FIG. 8 is a configuration of a modification of the shell sorting device according to one embodiment of the present invention. FIG. 9 (A) is an explanatory view showing the rotation direction of the sorting roller of the shell sorting apparatus according to one embodiment of the present invention, and (B), (C), (D) are the sorting of the shells, respectively. It is explanatory drawing of the rotation direction of the selection roller which concerns on the modification of an apparatus.

As shown in FIG. 1 to FIG. 7, a shell sorting apparatus 10 according to an embodiment of the present invention is installed, for example, on a boat (top) 12 of a fishing boat 11, and a seabed (not shown) in the vicinity of the fishing boat 11. ) Is supplied to the shells 13 and 13a of various sizes together with sand and garbage, and the shells 13 having a predetermined size (for example, shell thickness = shell width T is 13 mm) or more are selected. .
The shell sorting apparatus 10 includes a feeding hopper 16 in which shells 13 and 13a are supplied together with sand and garbage, sea water 14 as an example of washing water, and a discharge port 15 formed in a lower end portion. A supply unit 17 is formed immediately below the 16 discharge ports 15, and is inclined in parallel with a predetermined roller center interval (roller interval) S in a direction perpendicular to the conveyance direction 18 and downward along the conveyance direction 18. And a plurality of rotating rollers (12 in this embodiment) 19 to 30 and a rotation driving means 31 that rotates the selecting rollers 19 to 30.

As shown in FIGS. 5 (A), 5 (B), and 7, in the shell sorting apparatus 10, the sorting rollers 19 to 30 are viewed from the upstream side to the downstream side by the rotation driving means 31, and counterclockwise. By rotating, the downward force is applied to the shells 13, 13 a and sand and garbage located between the adjacent sorting rollers 19 to 30 by the rotation of the sorting rollers 19 to 29, and at the same time the rotation of the sorting rollers 20 to 30. The gap G (for example, 13 mm) between the adjacent sorting rollers 19 to 30 while aligning the shells 13 and 13a, sand, garbage, and the like between the adjacent sorting rollers 19 to 30 by applying an upward force by The shell 13 having a shell width T can be transported to the downstream end without being dropped, while the shell 13a (fry shell) having a shell width T less than the gap G, sand and garbage can be dropped and separated. Like It is configured. The material used for the device is made of stainless steel or synthetic resin in consideration of corrosion by seawater.

The shell sorting apparatus 10 is further disposed below the sorting rollers 19 to 30, the shell 13 a separated by the sorting rollers 19 to 30, and a discharge chute 32 that receives sand, garbage, etc. and discharges it to the sea, and a sorting roller. The shell discharge chute 33 provided with the supply part 33a just under the edge part of the conveyance downstream side of 19-30, and the shell 13 arrange | positioned downstream from the shell discharge chute 33 and discharged | emitted via the shell discharge chute 33 And a shell storage box 34 for storage. These will be described in detail below. In addition, the horizontal direction of the conveyance direction 18 of the shells 13 and 13a by the sorting rollers 19 to 30 is defined as the X direction, the horizontal direction orthogonal to the X direction is defined as the Y direction, and the direction orthogonal to the X direction and the Y direction is defined as the Z direction. To do.

As shown in FIGS. 1 to 4, the input hopper 16, the sorting rollers 19 to 30, the rotation driving means 31, the discharge chute 32 and the shell discharge chute 33 are provided on a mounting base 35 installed on the boat 12 of the fishing boat 11. ing. The mounting base 35 fixes the discharge chute 32 and the shell discharge chute 33, and is provided with a fixed portion 36 fixed to the shipboard 12, an input hopper 16, sorting rollers 19 to 30, and rotation driving means 31. A tilting portion 37 is attached to the upper portion so as to be tiltable with respect to the fixed portion 36 in the XZ plane.

As shown in FIGS. 1 to 6, on the downstream side of the tilting portion 37, a front bearing frame 38 that rotatably supports the shaft end on the downstream side of each sorting roller 19 to 30 is provided. The lower part is rotatably attached to the fixed part 36 by a pair of pins 39 provided at intervals K in the Y direction. On the other hand, on the upstream side of the tilting portion 37, a rear bearing frame 40 that rotatably supports the shaft ends on the upstream side of the sorting rollers 19 to 30 is provided, and the lower portion of the rear bearing frame 40 is spaced in the Y direction. The tilting portion 37 is attached to the fixed portion 36 so as to be able to contact and separate by a pair of jackup mechanisms 41 provided with a gap K therebetween. Therefore, the tilting portion 37 can be tilted with respect to the fixed portion 36 by the pin 39 and the jack-up mechanism 41, and thereby the tilting angle α of the sorting rollers 19 to 30 can be adjusted in the range of 3 to 15 °. it can.

As shown in FIGS. 2 and 4, a pair of rectangular plate-like mounting brackets 42, 43 provided at intervals in the Y direction on the rear end upper portion of the rear bearing frame 40 via a bracket 44. A charging hopper 16 is provided. As shown in FIGS. 1 and 3, the bottom portion of the charging hopper 16 is inclined at an inclination angle β, and a rubber plate 45 having a thickness of about 3 mm is attached to the bottom portion. Acts as a cushioning material. A rectangular plate-like shutter 46 that adjusts the height h (for example, about 30 mm) of the discharge port 15 formed at the lower end portion (for example, about 30 mm) is attached to the front portion of the charging hopper 16 so as to be movable up and down. ing. A U-shaped handle 47 for operation is fixed to the front upper end of the shutter 46. In order to be able to fix the shutter 46 to the charging hopper body 48, elongated holes 49 elongated in the Z direction are formed at four positions in the front portion of the charging hopper body 48. The discharge port 15 of the charging hopper 16 has a width W, and both end positions of the width W in the Y direction are located inside the sorting rollers 19 and 30 and outside the sorting rollers 20 and 29, respectively.

As shown in FIGS. 1, 2, and 4 to 6, the rotation driving means 31 is a motor 51 with a speed reducer attached to a bracket 50 provided at the center in the Y direction on the rear side of the rear bearing frame 40. A belt pulley 52 attached to the output shaft 51a of the motor 51 with speed reducer, and six belt pulleys 53 to 58 provided at the lower portion of the rear bearing frame 40 so as to be rotatable at intervals p in the Y direction. Belt pulleys 59, 60 for direction change provided at an intermediate position in the height direction between the upper belt pulleys 53 to 58 and the lower belt pulley 52 with an interval M in the Y direction, and a sorting roller An endless belt 61 wound around and in contact with the lower part of the circumferential portion of the end portion on the upstream side of 19 to 30 and driven by belt pulleys 52, 59, 53 to 58, 60 is provided. The endless belt 61 is a round belt having a diameter of about 5 mm.

Therefore, the belt drive mechanism 66 of the endless belt 61 that drives the sorting rollers 19 to 30 includes the motor 51 with a speed reducer and the belt pulleys 52 to 60. The speed reducer-equipped motor 51 has a structure capable of speed control, whereby the rotation speed N of the sorting rollers 19 to 30 is, for example, 30 to 200 rpm. 5A, the rotation direction of the sorting rollers 19 to 30 is counterclockwise, the rotation direction of the belt pulleys 52 to 58 is clockwise, and the rotation direction of the belt pulleys 59 and 60 is counterclockwise. . The belt pulleys 59 and 60 are movably attached so that the tension of the endless belt 61 can be adjusted.

As shown in FIGS. 2 and 6, each of the sorting rollers 19 to 30 has a sleeve-like resin pipe having an outer diameter D (for example, 30 mm), an inner diameter d (for example, 10 mm), and a length L (for example, 600 mm). And a long rotating shaft 63 that is provided to be fitted into an inner diameter d of the roller main body 62 and that is rotatably supported by the front bearing frame 38 and the rear bearing frame 40 at both ends in the conveying direction, respectively. ing. A sleeve-like spacer 64 having a small outer diameter T (for example, T = D / 2) is provided on the outer periphery of the rotating shaft 63 between the roller main body 62 and the front bearing frame 38. The drop space 65 is formed between the spacers 64 of the adjacent sorting rollers 19 to 30, and the shell 13 that has not dropped from the gap G is configured to fall from the drop space 65.

As shown in FIG. 1 to FIG. 4 and FIG. 7, the shell 13 a having a thickness less than the gap G separated from the gap G and the sand and garbage are formed at an inclination angle γ, and the discharge port 32 a is formed. It is configured to be discharged to the sea through a discharge chute 32 located on the sea surface. The discharge chute 32 having a concave cross section is attached to a bracket 67 of the fixed portion 36 of the mounting base 35, and has a width H and a horizontal projection length n. The width H of the discharge chute 32 is substantially the same as the length L of the roller body. The rotation speed N (rpm), the inclination angle α, the outer diameter D, the length L, and the like of the selection rollers 19 to 30 are appropriately determined so that the alignment and separation by the selection rollers 19 to 30 can be effectively performed.

As shown in FIGS. 1 to 3, a supply portion 33 a (upstream end portion) of the shell discharge chute 33 having an inclination angle δ is located immediately below the drop space 65 formed by the adjacent sorting rollers 19 to 30. Yes. A rectangular parallelepiped shell storage box 34 is disposed immediately below the downstream end of the shell discharge chute 33 having a width Q and a rubber section as a cushioning material and having a concave cross section. Note that the leg portions 68 provided at the four corners of the lower portion of the fixing portion 36 of the mounting base 35 have a structure in which the height of the fixing portion 36 can be adjusted. During operation of the shell sorting apparatus 10, the seawater 14 is supplied into the input hopper 16, and the seawater 14 is also supplied to the discharge chute 32 and the shell discharge chute 33 via a seawater injection pipe (not shown). The discharge chute 32 and the shell discharge chute 33 are washed to prevent accumulation on the discharge chute 32 and the shell discharge chute 33.

Next, the method of use and action (or operation) of the shellfish sorting apparatus 10 according to an embodiment of the present invention will be described with reference to the drawings.
(1) At the start of the shellfish fishing season (for example, November), the shell sorting device 10 is manually loaded onto the boat 12 of the fishing boat 11 anchored at the port. The height of the leg portion 68 of the fixed portion 36 is adjusted.
(2) Move the fishing boat 11 to the fishing ground, divers dive on the seabed, walk along the seabed with a large and long net, and dig up the surface layer of the seabed with a suction hose, Along with garbage, take it into the net.

(3) In consideration of shell sorting size, fishing ground conditions, processing conditions, etc., the shutter 46 is moved up and down to adjust the size of the discharge port 15 of the input hopper 16, and the rotation of the selection rollers 19-30 The speed N and the inclination angle α are set.
(4) The seawater 14 is supplied to the charging hopper 16, the discharge chute 32 and the shell discharge chute 33.
(5) The speed reducer-equipped motor 51 of the rotation driving means 31 is driven to rotate the sorting rollers 19 to 30 in the rotation direction shown in FIG.

(6) A diver working on the seabed rises when the inside of the net reaches a predetermined amount and lifts the net onto the ship.
(7) A worker on the ship throws the shells 13 and 13a in the net together with sand and garbage into the throwing hopper 16 of the shell sorting apparatus 10 using a scoop or the like.
(8) The shells 13 and 13 a in the charging hopper 16 fall together with sand and dust from the discharge port 15 to the upstream portion of the sorting rollers 19 to 30, that is, the upstream end portion of the roller main body 62.

(9) The feed including the shells 13 and 13a supplied to the upstream end of the roller body 62 of the sorting rollers 19 to 30 is downstream along the conveying direction 18, as shown in FIGS. Although being conveyed to the side, shells 13a, sand, and garbage smaller than the gap G of the roller main body 62 of the sorting rollers 19 to 30 fall from the gap G to the lower discharge chute 32.
On the other hand, the shell 13 larger than the gap G is aligned between the roller bodies 62 of the adjacent sorting rollers 19 to 30 due to the relationship between the shape of the shell 13 and the gravity center position g, that is, the back side of the shell 13 is always on the upper side. The shell falls to the shell discharge chute 33 via the drop space 65 at the downstream end of the roller main body 62 while the shell leg side is set downward.

(10) Small items including the small shells 13a that have fallen on the discharge chute 32 are discharged to the sea surface together with the seawater 14 without being deposited on the discharge chute 32 by the seawater 14 supplied via the seawater injection pipe.
(11) The large shell 13 that has fallen on the shell discharge chute 33 is discharged into the shell storage box 34 together with the seawater 14 without being deposited on the shell discharge chute 33 by the seawater 14 supplied via the seawater injection pipe. .

(12) When the shell storage box 34 is filled with the shell 13, it is replaced with another empty shell storage box 34.
(13) Repeat (6) to (12) a predetermined number of times.
(14) When the shell taking operation by the diver is finished, the supply of the seawater 14 to the charging hopper 16, the discharge chute 32 and the shell discharge chute 33 is stopped, and the operation of the motor 51 with a speed reducer is stopped. The sorting operation is finished.

(15) The fishing boat 11 enters the port, the shell storage box 34 containing the shells 13 is landed, and all the work of the day is completed.
(16) During the fishing season (for example, from November to May), the steps (2) to (15) are repeated for a predetermined period.
(17) When the fishing season ends (for example, in May), the shell sorting device 10 installed on the boat 12 is manually unloaded from the fishing boat 11 and transported to the original storage location.

FIG. 8 schematically shows a configuration of a shell sorting apparatus 70 according to a modification of the shell sorting apparatus 10 according to the embodiment of the present invention. The main difference between the shell sorting device 70 and the shell sorting device 10 is that an operator can easily put the shells in the net together with sand and garbage on the ship 12 using a scoop or the like. The point is that the position of the hopper 71 is lowered. The other points are in accordance with the shell sorting apparatus 10.

As shown in FIG. 8, the shell sorting device 70 is attached to a mounting frame 72 and connected to a horizontal portion 73 and a horizontal portion 73 disposed on the upstream side with a small gap from the lower end of the charging hopper 71, A pocket conveyor 75 having an inclined portion 74 rising along the downstream side, fixed to the mounting base 76, a supply chute 77 provided on the downstream side of the discharge part of the pocket conveyor 75, and fixed to the mounting base 76; Sorting rollers 78 to 89 arranged upstream of the supply end of the supply chute 77 and fixed to the mounting frame 76, discharged chute 90 arranged below the sorting rollers 78 to 89, and fixed to the mounting frame 76 And a shell discharge chute 91 provided with a supply portion directly below the downstream end of the sorting rollers 78 to 89, and a shell storage disposed below the tip of the shell discharge chute 91. And a box 92.

By the combination of the pocket conveyor 75 and the charging hopper 71, the manual supply height is changed from the height V (for example, 600 to 1000 mm) of the supply chute 77 to the height R (for example, 300 to 400 mm) of the upper end position of the charging hopper 71. ), So that the charging operation to the charging hopper 71 is simplified.

The present invention is not limited to the above-described embodiments, and can be changed without departing from the gist of the present invention. For example, some or all of the above-described embodiments and modifications are included. The case where the shellfish sorting apparatus of the present invention is configured in combination is also included in the scope of the right of the present invention.
In the above-described embodiment, the shell sorting devices 10 and 70 are installed on the shipboard 12 and used. However, the present invention is not limited to this, and can be used on land as necessary. Moreover, although the shellfish was selected together with sand, garbage, etc., it is not limited to this, and only the shellfish can be selected according to the situation.

In the shell sorting apparatus 10, the gap G between the adjacent sorting rollers 19 to 30 is constant. However, the invention is not limited to this, and the gap G can be adjusted as necessary (that is, the roller center interval S is set to be different). (Adjustable) can also be configured. For example, both ends of the rotation shaft 63 of each sorting roller 19 to 30 can move the front bearing frame 38 and the rear bearing frame 40 in the horizontal direction, and are fixed to the front bearing frame 38 and the rear bearing frame 40. Possible structures can be obtained. In this case, it is necessary to increase or decrease the number of sorting rollers 19 to 30 according to the size of the gap G.
Although the tilt angle α of the sorting rollers 19 to 30 can be adjusted in the range of 3 to 15 °, the tilt angle α can be fixed at a constant value depending on the situation.

The rotation driving means 31 is provided with an endless belt 61 wound around a part of the circumferential portion of the upstream end of the sorting rollers 19 to 30 and a belt driving mechanism 66 for driving the endless belt 61. However, the sorting rollers 19 to 30 can be rotated using rotation driving means of other structures (for example, gears) as necessary.
Although the endless belt 61 is wound around a part of the circumferential portion of the upstream end of the sorting rollers 19 to 30, the endless belt 61 is not limited to this. A belt groove having a concave cross section may be formed in the peripheral portion, and the endless belt may be fitted into the belt groove.

As shown in FIG. 5A, the rotation direction of the sorting rollers 19 to 30 is the counterclockwise direction, but is not limited thereto, and may be the clockwise direction as necessary. Moreover, as shown to FIG. 9 (A), although the rotation direction of the selection rollers 19-23 (24-30 is also the same) was made the same, it is not limited to this, FIG.9 (B) is needed as needed. As shown, it can also be rotated in the reverse direction sequentially. In this case, as shown in FIG. 5A, the direction in which the endless belt 61a is wound around the sorting rollers 19 to 30 is as indicated by a two-dot chain line. However, as shown in FIG. 9 (B), both shells located between adjacent sorting rollers both have a mountain-shaped cross section between adjacent sorting rollers 19 and 20 (21, 22) that exert a downward force. The block member 93 is provided so that the shell 13 or the like does not enter and cause trouble due to cracking or blockage.

Although the outer diameter D of the sorting rollers 19 to 23 (the same applies to 24 to 30) is the same, the present invention is not limited to this, and as necessary, as shown in FIG. 22a, and the outer diameter D can be changed alternately. Further, as shown in FIG. 9 (D), the rotation direction of the sorting rollers 20a, 22a is the clockwise direction, and the adjacent sorting rollers 19, 20a ( 21 and 22a) can be provided with a block member 93a having a mountain-shaped cross section so that the shell 13 or the like does not enter and cause trouble due to blockage.

Although the discharge chute 32 is provided below the sorting rollers 19 to 30 and the one that has fallen on the discharge chute 32 is thrown into the sea, the present invention is not limited to this. A plurality of other sorting rollers having a narrower roller interval and another rotation driving means for rotating the other plurality of sorting rollers are provided so that shells can be sorted in a plurality of stages (two or three stages). It can also be configured.
Although the seawater 14 was used as washing water, it is not limited to this, Tap water, industrial water, and other fluids can also be used according to the situation.

In the shell sorting device 70, the shells 13, 13 a and the like are fed to the sorting rollers 78 to 89 by an endless pocket conveyor 75 having a feeding section directly above the installation surface (board 12) and a horizontal section 73 of the pocket conveyor 75. Although it is configured so as to be performed via the charging hopper 71 provided immediately above, the present invention is not limited to this, and the charging hopper 71 may be omitted and supplied directly to the horizontal portion 73 of the pocket conveyor 75 as necessary. it can.

It is a front view of the shellfish sorting device concerning one embodiment of the present invention. It is a top view of the sorting device of the shellfish. It is a left view of the sorting device of the shellfish. It is a right view of the sorting apparatus of the shellfish. (A), (B) is the typical front view and side view which show the structure of the rotational drive means of the sorting roller of the sorting apparatus of the shellfish, respectively. It is a block diagram of the sorting roller of the shell sorting apparatus. It is explanatory drawing of the mechanism of the alignment and isolation | separation by rotation of a selection roller. It is a block diagram of the modification of the shell sorting apparatus concerning one embodiment of the present invention. (A) is explanatory drawing which shows the rotation direction of the selection roller of the shell sorting apparatus which concerns on one embodiment of this invention, (B), (C), (D) is a modification of the shell sorting apparatus, respectively. It is explanatory drawing of the rotation direction of the selection roller which concerns on.

Explanation of symbols

10: Shellfish sorting device, 11: Fishing boat, 12: On board, 13, 13a: Shellfish, 14: Seawater (washing water), 15: Discharge port, 16: Feeding hopper, 17: Supply section, 18: Transport direction, 19 -30: Sorting roller, 20a, 22a: Sorting roller, 31: Rotation drive means, 32: Discharge chute, 32a: Discharge port, 33: Shell discharge chute, 33a: Supply part, 34: Shell storage box, 35: Mounting stand 36: fixed part, 37: tilting part, 38: front bearing frame, 39: pin, 40: rear bearing frame, 41: jack-up mechanism, 42, 43: mounting bracket, 44: bracket, 45: rubber plate, 46: Shutter, 47: Handle, 48: Loading hopper body, 49: Long hole, 50: Bracket, 51: Motor with reduction gear, 51a: Output shaft, 52-60: Belt pulley, DESCRIPTION OF SYMBOLS 1, 61a: Endless belt, 62: Roller body, 63: Rotating shaft, 64: Spacer, 65: Fall space, 66: Belt drive mechanism, 67: Bracket, 68: Leg part, 70: Shell sorting device, 71: Input hopper, 72: mounting frame, 73: horizontal portion, 74: inclined portion, 75: pocket conveyor, 76: mounting base, 77: supply chute, 78-89: sorting roller, 90: discharge chute, 91: shell discharge chute , 92: Shell storage box, 93, 93a: Block member

Claims (9)

A shell sorting device for feeding shells of various sizes together with washing water to sort the shells of a predetermined thickness or more,
A plurality of sorting rollers arranged in parallel with a predetermined roller interval in a direction orthogonal to the transport direction and inclined downward along the transport direction, and rotating;
Rotation drive means for rotating the plurality of sorting rollers,
Rotating at least one of the adjacent sorting rollers in a rotational direction in which an upward force is applied to the shell located between the adjacent sorting rollers, and rotating the supplied shell to the adjacent sorting roller The shell having a thickness greater than or equal to the gap between the adjacent sorting rollers is conveyed to the downstream end without dropping while being aligned between the sorting rollers adjacent to each other, while the shell having a thickness less than the gap. Shellfish sorting device, characterized in that it is dropped and separated. 2. The shell sorting apparatus according to claim 1, wherein the gap between the adjacent sorting rollers is adjustable. 3. The shellfish sorting apparatus according to claim 1, wherein an inclination angle of the sorting roller is adjustable in a range of 3 to 15 °. The shellfish sorting device according to any one of claims 1 to 3, wherein the rotation driving means includes an endless belt that is partially wound around a circumferential portion of an upstream end of the sorting roller and the endless belt. A shell sorting apparatus, comprising: a belt driving mechanism for driving a belt. 5. The shellfish sorting apparatus according to claim 1, wherein the sorting rollers have the same rotation direction. 5. The shellfish sorting apparatus according to claim 1, wherein the rotation direction of the sorting roller is sequentially reversed. The shellfish sorting device according to any one of claims 1 to 6, wherein the shellfish are supplied to the sorting roller via an endless pocket conveyor having a supply section directly above the installation surface. Shell sorting device. The shell sorting apparatus according to claim 7, wherein a loading hopper through which an operator can put the shell by a scoop is provided immediately above the supply portion of the pocket conveyor. 9. The shell sorting apparatus according to claim 1, wherein a plurality of other sorting rollers having a narrower roller interval than the roller spacing are disposed below the plurality of sorting rollers, and the other plurality of sorting. A shell sorting apparatus characterized by providing another rotation driving means for rotating a roller and sorting the shells in a plurality of stages.

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