JP2005087923A - Dry ice quantitative feeder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a quantitative feeder of Dry Ice pieces, which is suitable for a production line requiring a large amount with a desired size in a short time. <P>SOLUTION: A Dry Ice block crusher is provided with a first crushing mechanism having a first rotary shaft and a crushing wheel attached around the shaft; a second crushing mechanism having a second rotary shaft in parallel with the first rotary shaft and a crushing wheel attached around the shaft, and arranged obliquely below the first crushing mechanism; a third crushing mechanism having a third rotary shaft in parallel with the first rotatry shaft and a crushing wheel attached around the shaft, and arranged below the first crushing mechanism and horizontally to the second crushing mechanism, and primarily crushing the Dry Ice block with the first crushing mechanism and secondarily crushing the primarily crushed Dry Ice pieces with the second crushing mechanism; and a screen having a shearing edge forming the secondarily crushed Dry Ice pieces to a fixed form is installed at the lower side of the second and the third crushing mechanisms. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a dry ice constant supply apparatus, and more particularly to an apparatus for producing small dry ice pieces with a predetermined size from a large dry ice block and supplying the necessary amount of dry ice pieces.

  Dry ice widely used in the food and industrial industries as a coolant is often used by transforming a large dry ice block into a piece of dry ice of an appropriate size. It is desirable to change the appropriate size according to the season, the type and size of the cooling object, or the cooling period.

Patent Document 1 discloses a small dry ice cutting device that can cut a thin plate-shaped dry ice block into a simple and uniform shape at once.
JP-A-11-207691

  However, a small dry ice cutter can only be used to cut dry ice blocks having a thin plate shape. Therefore, it is not suitable for a production line that requires a large amount of dry ice pieces in a short time. In addition, when it is desired to change the size of the dry ice piece, it is not possible to respond immediately, such as by changing the interval between the blade members of the cutter.

  Accordingly, an object of the present invention is to provide an apparatus for quantitatively supplying a piece of dry ice suitable for a production line of a desired size and in a large amount in a short time.

  A dry ice block crusher according to the present invention includes a first crushing mechanism having a first rotation shaft and at least one crushing wheel attached around the first rotation shaft, and a first crushing mechanism. A second rotation shaft having a second rotation shaft parallel to the first rotation shaft and at least one crushing wheel attached around the second rotation shaft and disposed obliquely below the first crushing mechanism. A crushing mechanism, a third rotating shaft parallel to the first rotating shaft, and at least one crushing wheel attached around the third rotating shaft; The crushing mechanism is arranged horizontally with the crushing mechanism, and the crushing mechanism is rotated with the first crushing mechanism to primarily crush the dry ice block. The crushing dry ice pieces are rotated with the crushing mechanism and the crushing mechanism to perform the secondary crushing. A third crushing mechanism. Thereby, it becomes possible to crush and shape the dry ice block into dry ice pieces of a desired size in a short time.

  Preferably, a first screen having one or more first shearing blades arranged below the second and third crushing mechanisms and forming the second crushed dry ice pieces into a first fixed shape is provided. Thereby, it becomes possible to arrange the pieces of dry ice fragmented by primary crushing and secondary crushing into a certain shape.

  Preferably, the first and third crushing mechanisms rotate in directions opposite to each other and in the direction of scraping the dry ice block to perform primary crushing, and the second and third crushing mechanisms are opposite to each other and primary crushed. Rotate in the direction of scraping the dry ice pieces to secondary crush.

  Preferably, the first crushing mechanism has a first rotation axis and a second rotation axis on the first position directly above the third crushing mechanism and between the second and third crushing mechanisms. It is arranged at any position between these, including the second distance where the distance between the first rotation shaft and the second rotation shaft is the same. Thereby, it becomes possible to crush and shape according to the size of the dry ice block.

  More preferably, the first crushing mechanism is movable horizontally between the first position and the second position. This makes it possible to select an optimal crushing mechanism arrangement for crushing and forming dry ice blocks having different sizes into dry ice pieces of a desired size.

  More preferably, the horizontal movement of the first crushing mechanism is performed by moving the frame surrounding the first crushing mechanism in the horizontal direction.

  Preferably, the distance between the first and third rotation shafts can be changed in the vertical direction.

  More preferably, the distance between the first and third rotation shafts is changed by moving the frame surrounding the first crushing mechanism in the vertical direction.

  Preferably, the first rotation shaft is rotated by the first motor, the second rotation shaft is rotated by the second motor, the third rotation shaft is rotated by the second motor, and the first, The rotation speed of the second motor can vary.

  Preferably, the first screen has a second screen having one or more second shearing blades that can form the crushed dry ice pieces into a second fixed shape different from the first fixed shape. Is replaceable.

  Preferably, each of the crushing wheels of the first, second, and third crushing mechanisms includes at least one or more scraping blades that hook the dry ice block and at least one or more crushing blades that crush the dry ice block. Have.

  More preferably, each of the crushing blades of the crushing wheels of the first, second, and third crushing mechanisms has a blade tip facing the radial direction of the crushing wheel, and the crushing wheels of the first, second, and third crushing mechanisms. Each of the scraping blades has a blade tip at a certain angle with the radial direction of the crushing wheel and faces the rotation direction of the crushing wheel during the crushing operation of the dry ice block.

  More preferably, each of the crushing wheels has the same shape.

  Preferably, the third crushing mechanism has two or more crushing wheels, the first and second crushing mechanisms have one crushing wheel less than the crushing wheels of the third crushing mechanism, The arrangement of the crushing wheels of the third crushing mechanism and the crushing wheels of the first and second crushing mechanisms so that the crushing wheels of the first and second crushing mechanisms are located at an intermediate position between the crushing wheels adjacent to each other. Is displaced by 1/2 of the pitch between the crushing wheels. This makes it possible to crush the dry ice pieces relatively finely.

  Preferably, the crushing wheels of the first crushing mechanism and the crushing wheel of the third crushing mechanism are arranged to face each other without any deviation. This makes it possible to crush the dry ice pieces relatively coarsely.

  The dry ice constant supply device according to the present invention corresponds to a conveyor for transporting a dry ice container, a barcode reader for reading a barcode written on the dry ice container, and information identified by the barcode reader. And a discharge hopper that puts the crushed dry ice pieces into a dry ice container by a necessary weight.

  Preferably, a plurality of discharge hoppers are provided, and dry ice pieces are put into a plurality of dry ice containers at a necessary weight at a time. This makes it possible to supply a large amount of dry ice pieces in a short time.

  As described above, according to the present invention, it is possible to provide an apparatus for quantitatively supplying dry ice pieces suitable for a production line that has a desired size and is required in large quantities in a short time.

  Hereinafter, embodiments of the present invention will be described. FIG. 1 is an overall perspective view of a dry ice quantitative supply apparatus.

  The dry ice constant supply device in this embodiment includes a dry ice block supply unit 10, a dry ice block crushing unit 30, a dry ice distribution and weighing unit 50, and a dry ice container transport unit 70.

  The dry ice block supply unit 10 conveys a large dry ice block to the dry ice block crushing unit 30. The dry ice block is carried in the dry ice transport container 11. The dry ice transport container 11 is adjusted to a height that is easy to carry out by the lift table 12. The dry ice block is manually transported from the dry ice transport container 11 to the dry ice chute 13 and then to the dry ice conveyor 14. The dry ice block is stopped by a stopper 15 attached to the forward end of the dry ice conveyor 14. After the stop, the dry ice block is inserted into the dry ice block crushing unit 30 by the pusher 16.

  The dry ice block crushing unit 30 is placed on the gantry 41 and crushes the dry ice block conveyed from the dry ice block supply unit 10 to obtain a dry ice piece of a desired size. The crushed dry ice pieces pass through the connecting chute 42 (see FIG. 3) and are conveyed to the dry ice distribution and weighing unit 50. Details of the dry ice block crushing unit 30 will be described later.

  The dry ice distribution and weighing unit 50 measures the dry ice pieces crushed by the dry ice block crushing unit 30 and distributes them to an appropriate weight. The dry ice pieces crushed by the dry ice block crushing unit 30 and conveyed to the dry ice distribution and weighing unit 50 are raised by the elevator 51. After the ascent, the distribution conveyor 52 conveys the sample to the measuring device 53 and measures it. As a result of the weighing, the dry ice pieces that have reached a predetermined weight are passed through the measuring device discharge hopper 54 to the dry ice container 90 on the dry ice container conveying unit 70 located below the measuring device 53 at a predetermined timing. It is thrown.

  The dry ice container transport unit 70 transports the dry ice container 90 into which the dry ice pieces are put on the conveyor 71. A bar code (not shown) is attached to the dry ice container 90. The bar code is read by a bar code reader 72 attached to the conveyor 71. By reading with the bar code reader 72, the weight of the dry ice piece to be put into the dry ice container 90 is determined. After the reading is completed, the dry ice container 90 flows on the conveyor 71 and is moved to the lower part of the meter discharge hopper 53. Information on the determined weight is transmitted to the weighing instrument discharge hopper 53, and when the corresponding dry ice container 90 is moved to the lower part of the weighing instrument discharge hopper 53, the dry ice piece corresponding to the predetermined weight is dried ice. The container 90 is charged. After charging, the dry ice container 90 is moved on the conveyor 71 in the direction of the arrow shown in FIG.

  The dry ice container 90 can be moved on the dry ice supply unit 70 in a certain quantity. As shown in FIG. 1, when four measuring instrument discharge hoppers 54 are arranged, four dry ice containers 90 can be moved at a time, and a large amount of dry ice containers 90 can be moved in a short time on a production line or the like. It is effective when a container containing ice pieces and dry ice pieces is required.

  The normal size of the dry ice block introduced into the dry ice constant supply device of the present embodiment is 240 mm wide × 240 mm long × 120 mm thick. However, depending on the arrangement of the first frame 31 f in the dry ice block crushing unit 30 described later. It is also possible to crush dry ice blocks of other sizes. Specifically, crushing is possible even when the dimensions of the dry ice block are increased by about 70 mm in the width direction, 100 mm in the length direction, and about 50 mm in the thickness direction. It is also possible to break dry ice blocks that are smaller than normal dimensions.

  Next, the dry ice block crushing unit 30 will be described in detail. FIG. 2 is a front view of the dry ice block crushing unit 30. FIG. 2 also shows a part (elevator 51) of the dry ice distribution and weighing unit 50 to which the dry ice pieces are conveyed from the dry ice block crushing unit 30. FIG. 3 is a side view of the dry ice block crushing unit 30. FIG. 4 is a detailed view of the periphery of the crushing mechanism in FIG. 5 and 6 are configuration diagrams of the first and third crushing mechanisms as viewed from the front. 7 and 8 are configuration diagrams of the second and third crushing mechanisms as viewed from above. In FIGS. 3 and 4, in order to explain the configuration of the crushing wheel in detail, the gears and the like arranged on the front face are omitted.

  The dry ice block crushing unit 30 includes first, second, and third crushing mechanisms 31, 32, and 33. When crushing the dry ice block, the first, second, and third crushing mechanisms 31, 32, and 33 are rotated in the direction of the arrow in FIG. The dry ice block crushing unit 30 includes a gate 37 as an insertion port into which the dry ice block is inserted by the pusher 16. The gate 37 can be opened and closed by a gate cylinder 36. As seen in FIG. 3, the first crushing mechanism 31 and the third crushing mechanism 33 are arranged vertically so that the dry ice block inserted from the right gate 37 side can be primarily crushed. The second crushing mechanism 32 and the third crushing mechanism 33 are arranged on the left and right (horizontal) so that the primary crushed dry ice pieces can be further finely crushed.

  The first crushing mechanism 31 includes a first rotating shaft 31a, at least one crushing wheel attached around the first rotating shaft 31a, and a pair of collars. In the present embodiment, the first crushing mechanism 31 has first to seventh crushing wheels 311 to 317. Each of the first and second collars 318 and 319 constituting the pair of collars is 1/2 the thickness of the first crushing wheel 311 and is used as a substitute for the seventh crushing wheel 317. Although the specific usage pattern will be described later, in the case of the first crushing mode, the seventh crushing wheel 317 is not used, and the first to sixth crushing wheels 311 to 316 are arranged around the first rotation shaft 31a. The first and second collars 318 and 319 are disposed at both ends thereof. In the case of the second crushing mode, the first and second collars 318 and 319 are not used, and the first to seventh crushing wheels 311 to 317 are arranged around the first rotation shaft 31a.

  The first crushing wheel 311 of the first crushing mechanism 31 is attached to a columnar first mounting base 311b that is integrally fitted to the outer periphery of the first rotation shaft 31a, and the blade tip thereof is directed in the radial direction. The first crushing blade 311c to be mounted and the cutting edge 311d to which the cutting edge is attached at a certain angle with the radial direction and facing the rotation direction during crushing of the dry ice block. The first scraping blade 311d is used for hooking the dry ice block so as to be caught in the first and third crushing mechanisms 31 and 33. The 1st crushing blade 311c is used in order to crush the entrained dry ice block. In the first crushing wheel 311, five first crushing blades 311 c and one first scoring blade 311 d are screwed to the first mounting table 311 b in such a manner that the outer periphery of the first mounting table 311 b is equally divided into six. (Not shown) and attached. The second to seventh crushing wheels 312 to 317 of the first crushing mechanism 31 also have the same shape and configuration as the first crushing wheel 311.

  The first crushing mechanism 31 is rotated by the first motor 31e. The first motor 31e can change the rotation speed.

  The second crushing mechanism 32 includes a second rotating shaft 32a, at least one crushing wheel attached around the second rotating shaft 32a, and a pair of collars. In the present embodiment, the second crushing mechanism 32 has first to seventh crushing wheels 321 to 327. Each of the first and second collars 328 and 329 constituting the pair of collars is 1/2 the thickness of the first crushing wheel 321 and is used as a substitute for the seventh crushing wheel 327. Although a specific usage pattern will be described later, in the case of the first crushing mode, the seventh crushing wheel 327 is not used, and the first to sixth crushing wheels 321 to 326 are arranged around the second rotation shaft 32a. The first and second collars 328 and 329 are disposed at both ends thereof. In the case of the second crushing mode, the first and second collars 328 and 329 are not used, and the first to seventh crushing wheels 321 to 327 are arranged around the second rotation shaft 32a.

  The first crushing wheel 321 of the second crushing mechanism 32 has a hollow columnar first mounting base 321b that is integrally fitted to the outer periphery of the second rotating shaft 32a, and the cutting edge thereof is directed in the radial direction. A first crushing blade 321c to be attached and a first scraping blade 321d to be attached so that the blade tip forms a certain angle with the radial direction and faces the rotation direction during crushing of the dry ice block. The first scraping blade 321d is used for hooking the dry ice block so as to be caught in the second and third crushing mechanisms 32 and 33. The 1st crushing blade 321c is used in order to crush the entrained dry ice block. In the first crushing wheel 321, five first crushing blades 321 c and one first scoring blade 321 d are screwed to the first mounting base 321 b in such a manner that the outer periphery of the first mounting base 321 b is divided into six equal parts ( (Not shown) and attached. The second to seventh crushing wheels 322 to 327 of the second crushing mechanism 32 also have the same shape and configuration as the first crushing wheel 321. The shapes of the first to seventh crushing wheels 321 to 327 of the second crushing mechanism 32 are the same as the shapes of the first to seventh crushing wheels 311 to 317 of the first crushing mechanism 31.

  The second crushing mechanism 32 is rotated by the second motor 32e. The second motor 32e can change the rotation speed.

  The third crushing mechanism 33 includes a third rotating shaft 33a and at least one crushing wheel attached around the third rotating shaft 33a. In the present embodiment, the third crushing mechanism 33 has first to seventh crushing wheels 331 to 337. Although a specific usage pattern will be described later, the first to seventh crushing wheels 331 to 337 are arranged around the third rotation shaft 33a in both cases of the first and second crushing modes.

  The first crushing wheel 331 of the third crushing mechanism 33 is attached to a columnar first mounting base 331b that is integrally fitted to the outer periphery of the third rotating shaft 33a, and the blade tip thereof is directed in the radial direction on the first mounting base 331b. The first crushing blade 331c and the first scraping blade 331d attached with the cutting edge being attached at a certain angle with the radial direction and facing the rotation direction when crushing the dry ice block. The first scraping blade 331d is used for hooking the dry ice block and winding it into the first, second, and third crushing mechanisms 31, 32, and 33. The 1st crushing blade 331c is used in order to crush the entrained dry ice block. The first crushing wheel 331 is screwed to the first mounting base 331b with five first crushing blades 331c and one first scoring blade 331d in the form of dividing the outer periphery of the first mounting base 331b into six equal parts ( (Not shown) and attached. The second to seventh crushing wheels 332 to 337 of the third crushing mechanism 33 also have the same shape and configuration as the first crushing wheel 331. The shapes of the first to seventh crushing wheels 331 to 337 of the third crushing mechanism 33 are the same as the shapes of the first to seventh crushing wheels 311 to 317 of the first crushing mechanism 31.

  The third crushing mechanism 33 is rotated by the rotation of the second motor 32e being transmitted via the drive gear 32g of the second crushing mechanism 32 and the driven gear 33g of the third crushing wheel 33. In the present embodiment, the rotation of the second motor 32e directly rotates the second crushing mechanism 32, and the third crushing mechanism 33 is indirectly rotated by the driving gear 32g and the driven gear 33g. Although described, the third crushing mechanism 33 may be rotated directly and the second crushing mechanism 32 may be rotated indirectly. Further, the third crushing mechanism 33 may be rotated not by the second motor 32e but by a third motor.

  When the drive gear 32g meshes with the driven gear 33g, the second crushing mechanism 32 and the third crushing mechanism 33 rotate in the opposite directions. In the present embodiment, the drive gear 32g and the driven gear 33g have the same shape, and the rotation speeds of the second crushing mechanism 32 and the third crushing mechanism 33 are the same. Although the rotation direction of the 1st crushing mechanism 31 and the 2nd crushing mechanism 32 is the same direction, since the motor to drive is different, the rotation speed can be changed.

  The configurations of the first to seventh crushing wheels 311 to 317, 321 to 327 and the first and second collars 318, 319, 328, and 329 in the first and second crushing mechanisms 31 and 32 are different depending on two types of crushing modes. .

  As shown in FIGS. 5 and 7, the first to seventh crushing wheels 331 to 337 of the third crushing mechanism 33 and the first to sixth crushing wheels 311 to 316 of the first crushing mechanism 31 in the first crushing mode. The phase is shifted by a half of the thickness (pitch) of one crushing wheel. The positional relationship between the first to seventh crushing wheels 331 to 337 of the third crushing mechanism 33 and the first to sixth crushing wheels 321 to 326 of the second crushing mechanism 32 is equal to the thickness of the crushing wheel having one phase. It is shifted by 1/2 of that. The seventh crushing wheels 317 and 327 of the first and second crushing mechanisms 31 and 32 are not used, and the first crushing mechanism has first collars 318 and 319 attached to both ends of the first to sixth crushing wheels 311 to 316. In the second crushing mechanism, the second collars 328 and 329 are attached to both ends of the first to sixth crushing wheels 321 to 326. The relationship between the first to sixth crushing wheels 311 to 316 of the first crushing mechanism 31 and the first to seventh crushing wheels 331 to 337 of the third crushing mechanism 33 and the first to sixth crushing of the second crushing mechanism 32. Due to the relationship between the wheels 321 to 326 and the first to seventh crushing wheels 331 to 337 of the third crushing mechanism 33, the crushing blade tips are arranged in a phase shifted from each other, so that the second crushing described later is performed. Compared to the mode, the dry ice pieces can be crushed more finely.

  As shown in FIGS. 6 and 8, the first to seventh crushing wheels 331 to 337 of the third crushing mechanism 33 and the first to seventh crushing wheels 311 to 317 of the first crushing mechanism 31 in the second crushing mode. Are opposed to each other with no phase shift. The positional relationship between the first to seventh crushing wheels 331 to 337 of the third crushing mechanism 33 and the first to seventh crushing wheels 321 to 327 of the second crushing mechanism 32 is opposed to each other with no phase shift. The first and second collars 318, 319, 328, 329 are not used. The relationship between the first to seventh crushing wheels 311 to 317 of the first crushing mechanism 31 and the first to seventh crushing wheels 331 to 337 of the third crushing mechanism 33 and the first to seventh crushing of the second crushing mechanism 32. Because of the relationship between the wheels 321 to 327 and the first to seventh crushing wheels 331 to 337 of the third crushing mechanism 33, the tips of the crushing blades are arranged to face each other without any phase shift, and the first mentioned above. It is possible to crush a large dry ice block and a piece of dry ice compared to the crushing mode of 1.

  The first crushing mechanism 31 is surrounded by the first frame 31f, and the second and third crushing mechanisms 32 and 33 are surrounded by the second frame 32f. The first frame 31f is movable in the horizontal direction (left-right direction in FIG. 3) and the vertical direction (up-down direction in FIG. 3) including the first crushing mechanism 31. This horizontal direction is a direction in which the interaxial distance between the first crushing mechanism 31 and the second crushing mechanism 32 and the interaxial distance between the first crushing mechanism 31 and the third crushing mechanism 33 are changed, and the gate 37 is viewed in front. It is the depth direction. Although the horizontal movement and the vertical movement of the first frame 31f are performed by the slide devices 38h and 38v, respectively, the frame mounting seat may be adjustable by using a long hole.

  FIG. 4 shows a state in which the first crushing mechanism 31 is directly above the third crushing mechanism 33 and the distance between the axes is shortened. FIG. 9 shows a state in which the first frame 31 f is moved in the horizontal direction from the state of FIG. 4 and the distance between the axes of the first crushing mechanism 31 and the third crushing mechanism 33 is increased. FIG. 10 shows a state in which the first frame 31 f is moved in the vertical direction from the state of FIG. 4 to increase the distance between the first crushing mechanism and the third crushing mechanism 33.

  Changing the rotational speed of the first crushing mechanism 31 and the second and third crushing mechanisms 32 and 33, and the first crushing mechanism 31 and the second crushing mechanism 32, the first crushing mechanism 31 and the third crushing mechanism 33 By changing the distance between the shafts, it is possible to cope with fluctuations in the size of the dry ice block to be inserted and fluctuations in the size of the dry ice piece to be formed. As the distance between the axes of the first crushing mechanism 31 and the third crushing mechanism 33 is longer, the larger dry ice block can be crushed. Further, the faster the rotational speed of the first, second, and third crushing mechanisms 31, 32, and 33, the finer the dry ice block can be crushed. Also, by making the rotational speeds of the first crushing mechanism 31 and the second crushing mechanism 32 different, the amount of dry ice block biting into the first and third scraping blades 311d, 331d, etc. is changed to crush the dry ice. The size of the piece can be adjusted.

  However, when the shape of the dry ice block to be inserted is fixed, the first frame 31f may not be movable. Furthermore, when the shape of the desired dry ice piece is fixed, the rotational speeds of the first, second, and third crushing mechanisms 31, 32, and 33 may not be varied.

  The relatively thin dry ice block is crushed after the distance between the axes of the first and third crushing mechanisms 31 and 33 is set long by, for example, moving the first frame 31f vertically upward. In this case, in addition to the method of moving the first frame 31f again, a liner 39 having an appropriate thickness is installed as a pedestal in the vicinity of the insertion opening near the gate 37, so that the distance between the shafts and the thickness of the dry ice block are increased. You may adjust the thickness.

  The side surfaces and top surfaces of the first, second, and third crushing mechanisms 31, 32, and 33 are surrounded by the first and second frames 31f and 32f and the gate 37 so that the dry ice pieces formed by crushing are not scattered. The The lower surfaces of the second and third crushing mechanisms 32 and 33 are connected to the connection chute 42, and the crushed dry ice pieces are conveyed to the dry ice distribution and weighing unit 50.

  The first screen 341 or the second screen 342 is attached in the second frame 32 f and below the second and third crushing mechanisms 32 and 33. 11 and 12 are a side view and a top view of the first screen 341 used in the first crushing mode, and FIGS. 13 and 14 are the second screen 342 used in the second crushing mode. The side view and top view of are shown. The first and second screens 341 and 342 play a role of aligning the fragmented dry ice pieces into a certain shape by the secondary crushing of the second and third crushing mechanisms 32 and 33. The first screen 341 and the second screen 342 have first and second shear blade groups 341a and 342a having different widths and heights. In order to arrange the dry ice pieces to a desired size, the shear blades of the first and second shear blade groups 341a and 342a are disposed between the adjacent crushing wheels, and the dry ice pieces are the first screen 341. Alternatively, by passing through the second screen, a dry ice piece having a uniform shape is formed by shearing and crushing with a crushing wheel and a screen. Furthermore, the 1st screen 341 may be provided with the horizontal blade group 341b which arrange | positioned the horizontal blade between each of the shear blades which comprise the 1st shear blade group 341a.

  When a screen having a shear blade group having a large shear blade width and a low height, such as the first screen 341, is used, a small dry ice piece is formed. When a screen having a shear blade group having a small width and a high height (short distance to the crushing mechanism) like the second screen 342 is used, a large piece of dry ice is formed. The first and second screens 341 and 342 have a replaceable shape, and any one of the screens can be selected and attached to the dry ice block crushing unit 30. In addition to the first and second screens 341 and 342, a screen having slits with different widths, heights, and blade shapes may be prepared.

  The third and fourth screens 343 and 344 are attached to the inner part of the first crushing mechanism 31 when viewed from the front of the first frame 31 f and the gate 37. 16 and 17 show a side view and a front view of the third screen 343 used in the case of the first crushing mode. 18 and 19 show a side view and a front view of the fourth screen 344 used in the second crushing mode. The third and fourth screens 343 and 344 play a role of aligning the fragmented dry ice pieces into a certain shape by primary crushing of the first and third crushing mechanisms 31 and 33. The third and fourth screens 343 and 344 have third and fourth shear blade groups 343a and 344a having different widths and heights. The shear blades of the third and fourth shear blade groups 343a and 344a are arranged between adjacent crushing wheels, and the dry ice pieces are sheared and crushed by the crushing wheels and the screen.

  When a screen having a shear blade group with a large shear blade width, such as the third screen 343, is used, a small dry ice piece is formed. When a screen having a shear blade group with a small shear blade width, such as the fourth screen 344, is used, a large piece of dry ice is formed. The third and fourth screens 343 and 344 have interchangeable shapes, and any one of the screens can be selected and attached to the dry ice block crushing unit 30. In addition to the third and fourth screens 343 and 344, a screen having slits with different widths, heights, and blade shapes may be prepared.

  However, when the shape of the desired dry ice piece is fixed, the shape of the screen may be one type. In addition, when the first to fourth screens 341 to 344 are not provided, the dry ice pieces cannot be arranged in a certain shape, but the primary crushing mechanisms 31, 32, and 33 are primarily crushed, The dry ice block can be made into fragmented dry ice pieces by subsequent crushing.

  FIG. 4 shows a state in which the first and third screens 341 and 343 are attached to the dry ice block crushing unit 30 in the first crushing mode state, and FIG. 15 shows the first screen in the second crushing mode state. 2 shows a state where the fourth screens 342 and 344 are attached to the dry ice block crushing unit 30. In the second crushing mode, the second screen 342 is attached in a state closer to the second and third crushing mechanisms 32 and 33 than in the case of the first screen 341.

  The first to third crushing mechanisms each have seven crushing wheels. In the first crushing mode, the number of crushing wheels of the first and second crushing mechanisms is the number of crushing wheels of the third crushing mechanism. In the second crushing mode, the first, second, and third crushing mechanisms each use the same number of seven crushing wheels in the second crushing mode. However, the number of crushing wheels is another number, and in the first crushing mode, the number of crushing wheels of the first and second crushing mechanisms is one less than the number of crushing wheels of the third crushing mechanism. In the second crushing mode, the number of crushing wheels of the first to third crushing mechanisms may be the same.

  Moreover, the number of crushing wheels which each crushing mechanism has may be different. Moreover, although it demonstrates as the shape of each crushing wheel being the same, you may crush by the crushing wheel which is not the same and is different.

  Next, the flow until the dry ice block is formed into dry ice pieces having a predetermined size and weight by the dry ice constant supply device and is put into the dry ice container 90 using the flowchart of FIG. explain.

  In step S11, the first crushing mode or the second crushing mode is selected according to the size of the desired dry ice piece, and one of the first and second screens 341 and 342 and the third and fourth screens are selected. One of the screens 343 and 344 is selected and attached to the dry ice block crushing unit 30. At the same time, the crushing wheels 311 to 317 and 321 to 327 of the first and second crushing mechanisms 31 and 32 and the first and second collars 318, 319, 328 and 329 are connected to the first and second rotating shafts 31a and 32a. Attached in a predetermined arrangement.

  In the case of the first crushing mode, the first screen 341 is attached to the second frame 32f, and the third screen 343 is attached to the first frame 31f. First to sixth crushing wheels 311 to 316 and first and second collars 318 and 319 are attached to the first rotation shaft 31a. Similarly, the first to sixth crushing wheels 321 to 326 and the first and second collars 328 and 329 are attached to the second rotating shaft 32a. In the case of the second crushing mode, the second screen 342 is attached to the second frame 32f, and the fourth screen 344 is attached to the first frame 31f. First to seventh crushing wheels 311 to 317 are attached to the first rotation shaft 31a. Similarly, first to seventh crushing wheels 321 to 327 are attached to the second rotation shaft 32a. In any mode, the first to seventh crushing wheels 331 to 337 are attached to the third rotating shaft 33a.

  In step S12, the first frame 31f is positioned according to the size of the dry ice block to be inserted and the desired size of the dry ice piece, and the rotation speeds of the first and second motors 31e and 32e are set. . Further, a liner 39 is installed as necessary.

  In step S <b> 13, the dry ice block is taken out from the dry ice transport container 11 and carried into the dry ice block supply unit 10. In step S <b> 14, the dry ice block is transported on the dry ice conveyor 14 and inserted into the dry ice block crushing unit 30.

  In step S <b> 15, the dry ice block is primarily crushed between the first crushing mechanism 31 and the third crushing mechanism 33. In step S <b> 16, the primary crushed dry ice block and the dry ice piece are secondarily crushed between the second crushing mechanism 32 and the third crushing mechanism 33. There are also dry ice blocks and pieces of dry ice that are crushed between the crushing wheel of the first crushing mechanism 31 and the third screen 343 or the fourth screen 344 before the secondary crushing.

  In step S <b> 17, the secondly crushed dry ice piece passes through the first screen 341 or the second screen 342. In step S <b> 18, the dry ice pieces that have passed through the screen are moved to the weighing device 53 of the dry ice dispensing and weighing unit 50 via the connection chute 42. The crushed dry ice pieces are successively accumulated in the weighing device 53 of the dry ice dispensing and weighing unit 50.

  In parallel with steps S11 to S18, the dry ice container 90 is moved on the dry ice container transport unit 70. In step S <b> 21, the dry ice container 90 is carried into the dry ice container transport unit 70. In step S <b> 22, the bar code written in the dry ice container 90 is read by passing the dry ice container 90 through the bar code reader 72. From the read bar code information, the information on the weight of the desired dry ice piece is transmitted to the weighing device 53 of the dry ice distribution weighing unit 50.

  Based on the weight information obtained in step S22, it is determined in step S19 whether or not the dry ice pieces that have been moved to and accumulated in the weighing unit 53 have reached a desired weight. If not, the dry ice pieces that are crushed and sent are accumulated. If it has reached, it is determined in step S23 whether or not the dry ice container 90 is disposed at a predetermined position below the measuring unit 53. If not, step S23 is repeated until it is placed at a predetermined position. When placed at the predetermined position, in step S31, the dry ice pieces accumulated in the measuring device 53 are discharged into the dry ice container 90 through the measuring device discharge hopper 54. After discharging, in step S32, the dry ice container 90 including the dry ice pieces is moved on the conveyor 71 and carried out.

  In addition, although step S11-S17 was demonstrated as what crushes a dry ice block using the dry ice block crushing part 30, it may crush a dry ice block with another form.

It is a whole perspective view of the dry ice fixed quantity supply apparatus concerning this embodiment. It is a front view of a dry ice block crushing part. It is a side view of a dry ice block crushing part. It is detail drawing of the crushing mechanism periphery of a dry ice block crushing part. It is the block diagram which looked at the 1st, 3rd crushing mechanism in the 1st crushing mode from the front. It is the block diagram which looked at the 1st, 3rd crushing mechanism in the 2nd crushing mode from the front. It is the block diagram which looked at the 2nd, 3rd crushing mechanism in the 1st crushing mode from the upper surface. It is the block diagram which looked at the 2nd, 3rd crushing mechanism in the 2nd crushing mode from the upper surface. It is detail drawing of the crushing mechanism periphery of a dry ice block crushing part at the time of moving the 1st flame | frame horizontally from the state of FIG. It is detail drawing of the crushing mechanism periphery of a dry ice block crushing part at the time of moving a 1st flame | frame from the state of FIG. 4 to a perpendicular direction. It is a side view of a 1st screen. It is a top view of the 1st screen. It is a side view of a 2nd screen. It is a top view of a 2nd screen. It is detail drawing of the crushing mechanism periphery of a dry ice block crushing part at the time of removing a 1st screen from the state of FIG. 4, and attaching a 2nd screen. It is a side view of a 3rd screen. It is a front view of a 3rd screen. It is a side view of a 4th screen. It is a front view of a 4th screen. It is a flowchart until a dry ice block is shape | molded into the dry ice piece of a predetermined | prescribed magnitude | size and weight with the dry ice fixed quantity supply apparatus, and is thrown into a dry ice container.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Dry ice block supply part 11 Dry ice transport container 12 Lift table 13 Chute for dry ice 14 Dry ice conveyor 15 Stopper 16 Pusher 30 Dry ice block crushing part 31, 32, 33 The 1st, 2nd, 3rd crushing mechanism 311 317 First to seventh crushing wheels of the first crushing mechanism 318, 319 First and second collars 321 to 327 of the first crushing mechanism First to seventh crushing wheels of the second crushing mechanism 328, 329 of the second crushing mechanism First, second collars 331-337 First to seventh crushing wheels 31a, 32a, 33a of first crushing mechanism First, second, third rotating shafts 31e, 32e First, second motors 31f, 32f First 1. Second frame 32g Drive gear 33g Driven gear 341, 342 First, second screen 343, 344 Third, fourth screen 36 Gate cylinder 37 Gate 38h, 38v Slide device 39 Liner 41 Mounting base 42 Connection chute 50 Dry ice distribution weighing section 51 Lifting machine 52 Distribution conveyor 53 Weighing instrument 54 Weighing machine discharge hopper 70 Dry ice container conveyance section 71 Conveyor 72 Bar code reader 90 dry ice containers

Claims (17)

A first crushing mechanism having a first rotation shaft and at least one crushing wheel attached around the axis of the first rotation shaft;
A second rotation shaft parallel to the first rotation shaft; and at least one crushing wheel attached around the second rotation shaft; and obliquely below the first crushing mechanism. A second crushing mechanism disposed;
A third rotating shaft parallel to the first rotating shaft; and at least one crushing wheel attached around the third rotating shaft; and below the first crushing mechanism and By being horizontally disposed with the second crushing mechanism and rotating with the first crushing mechanism, the dry ice block is primarily crushed, and the primary crushed dry ice pieces are rotated with the second crushing mechanism. A dry ice block crusher comprising a third crushing mechanism for secondary crushing.   A first screen having one or more first shearing blades disposed below the second and third crushing mechanisms and forming the second crushed dry ice pieces into a first fixed shape; The dry ice block crusher according to claim 1, wherein   The first and third crushing mechanisms rotate in the opposite directions and in the direction of scraping the dry ice block to perform primary crushing, and the second and third crushing mechanisms are in the opposite directions and primarily crushed dry ice pieces. The dry ice block crusher according to claim 1, wherein the crusher is rotated in the direction of scraping and secondarily crushing.   The first crushing mechanism includes a first position directly above the third crushing mechanism and an axis between the first rotation shaft and the second rotation shaft right above the middle between the second and third crushing mechanisms. 2. The device according to claim 1, wherein the distance between the first rotation shaft and the second rotation shaft is equal to the second position where the distance between the first rotation shaft and the second rotation shaft is equal. The dry ice block crusher described in 1.   The dry ice block crusher according to claim 4, wherein the first crushing mechanism is horizontally movable between the first position and the second position.   6. The dry ice block crusher according to claim 5, wherein the horizontal movement of the first crushing mechanism is performed by moving a frame surrounding the first crushing mechanism in the horizontal direction.   2. The dry ice block crusher according to claim 1, wherein an inter-axis distance between the first and third rotation shafts can be changed in a vertical direction.   8. The dry ice block crushing according to claim 7, wherein the inter-axis distance between the first and third rotating shafts is changed by moving a frame surrounding the first crushing mechanism in the vertical direction. Machine.   The first rotation shaft is rotated by a first motor, the second rotation shaft is rotated by a second motor, the third rotation shaft is rotated by the second motor, and the first, The dry ice block crusher according to claim 1, wherein the rotation speed of the second motor is variable.   The first screen replaces the crushed dry ice piece with a second screen having one or more second shearing blades that can form a second constant shape different from the first constant shape. The dry ice block crusher according to claim 2, which is possible.   Each of the crushing wheels of the first, second, and third crushing mechanisms includes at least one or more scraping blades that hook the dry ice block and at least one or more crushing blades that crush the dry ice block. The dry ice block crusher according to claim 1, wherein   Each of the crushing blades of the crushing wheels of the first, second, and third crushing mechanisms has a blade tip that faces the radial direction of the crushing wheel, and the crushing wheels of the first, second, and third crushing mechanisms Each of the scraping blades has a blade tip that forms a certain angle with the radial direction of the crushing wheel and faces the rotation direction of the crushing wheel during the crushing operation of the dry ice block. The dry ice block crusher described.   The dry ice block crusher according to claim 12, wherein each of the crushing wheels has the same shape.   The third crushing mechanism has two or more crushing wheels, and the first and second crushing mechanisms have one crushing wheel fewer than the crushing wheels of the third crushing mechanism, and the third crushing mechanism The arrangement of the crushing wheels of the third crushing mechanism and the crushing of the first and second crushing mechanisms so that the crushing wheels of the first and second crushing mechanisms are located at an intermediate position between the crushing wheels adjacent to each other. The dry ice block crusher according to claim 1, wherein the arrangement of the wheels is shifted by a half of the pitch between the crushing wheels.   2. The dry ice block crusher according to claim 1, wherein the crushing wheels of the first crushing mechanism and the crushing wheel of the second crushing mechanism are arranged to face each other without any deviation from the crushing wheel of the third crushing mechanism.   A conveyor for transporting the dry ice container, a bar code reader for reading the bar code written on the dry ice container, and a dry ice piece crushed corresponding to the information identified by the bar code reader A dry ice quantitative supply device comprising a discharge hopper for charging into the dry ice container only. The dry ice fixed quantity supply apparatus according to claim 16, wherein a plurality of the discharge hoppers are provided, and the pieces of dry ice can be charged into the plurality of dry ice containers by the required weight at a time.

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