A production line for processing of pecan nuts

Abstract

The application discloses a production line for processing of Carya illinoinensis, and belongs to the technical field of Carya illinoinensis processing, which comprises roller washing machines, conveyors, dryers and inclined elevators connected in sequence, wherein the inclined elevators are provided with screening machines at output ends; the screening machine comprises a support frame, a rotating roller part, long and short push plate parts distributed on the two long sides of the frame, and a driving part for driving multiple rotating shafts to rotate simultaneously. In the application, the push plate structure and the staggered large and small roller shafts are matched, so that the Carya illinoinensis forms a grid structure between the large and small roller shafts, and is also laterally pushed by the push plate during the pushing and screening process, thereby realizing complex translation and tumbling of the Carya illinoinensis between the grid structures, and being less likely to be stuck while being more accurately screened.

Description

Technical Field

[0001] This invention belongs to the field of primary processing technology for thin-shelled pecans, specifically a production line for primary processing of thin-shelled pecans. Background Technology

[0002] The American pecan, belonging to the Juglandaceae family, is also known as the "thin-shelled pecan" or "skinned pecan." It is a large tree, reaching up to 50 meters in height. Its buds are yellowish-brown, and its twigs are covered in soft hairs. It has odd-pinnate compound leaves; the petioles and rachis are initially covered in soft hairs, and the leaflets have very short petioles, an acuminate apex, and single or double serrations along the margins. Initially covered with glands and soft hairs, the hairs later fall off, leaving sparse hairs on the veins.

[0003] The initial processing of thin-shelled pecans mainly consists of washing and impurity removal, drying, and screening and grading. Among these, the screening and grading process, which is closest to the finished product, presents the following problems due to the hard and brittle nature of the thin-shelled pecan shell:

[0004] Modern sorting machines mainly use drum-type or plate-type screen sorting methods. However, due to the hard shell of thin-shelled pecans and the difficulty in extending and rotating the mesh edges, the mesh openings of the sorting machine are easily clogged. At the same time, the thin and fragile shell of thin-shelled pecans makes traditional nut sorting methods unsuitable. Therefore, the sorting efficiency and effect are directly affected, and there is also the possibility of jamming.

[0005] Traditional roller sorting machines, due to the elliptical structure of thin-shelled pecans, can only rotate between rollers following the short axis of the ellipse when tumbling between multiple rollers. This makes it difficult for the pecans to be turned over or deflected in other directions, further hindering accurate screening. Summary of the Invention

[0006] The purpose of this invention is to provide a production line for the initial processing of thin-shelled pecans, addressing the problems that when using a mesh structure, thin-shelled pecans are easily stuck and crushed; and when using a roller structure, it is difficult to flip them in all directions, resulting in large errors in the screening results.

[0007] The technical solution adopted in this invention is as follows:

[0008] A production line for primary processing of thin-shelled pecans includes a roller washing machine, a conveyor, a dryer, and an inclined elevator connected end to end. A screening machine is installed at the output end of the inclined elevator, and the screening machine includes:

[0009] The support frame includes a frame capable of conveying walnuts in one direction, with two short sides of the frame serving as an input end and an output end; a first fixed rotating frame is installed on both sides of the frame near the input end, and a second fixed rotating frame is installed on both sides of the frame near the output end.

[0010] The rotating roller section has multiple rotating shafts with equal spacing arranged in the conveying direction of the frame;

[0011] The long push plate section and the short push plate section are distributed on the long sides of both sides of the frame. One end of the long push plate section and the short push plate section rotate around the first fixed rotating frame, and the other end rotates around the second fixed rotating frame.

[0012] And a drive unit that drives multiple rotating shafts to rotate simultaneously.

[0013] The long push plate includes a first push plate, a first transmission rod, and a first electric telescopic cylinder. One side of the first push plate is rotatably connected to a first fixed rotating frame, and the other side has a first sliding groove shell installed on both the upper and lower surfaces. A first embedded slider is slidably connected in each of the two first sliding groove shells. The main body of the first electric telescopic cylinder is rotatably connected to the frame.

[0014] The first transmission rod consists of four rods connected end to end. The first and third rods are horizontally arranged, and the second and fourth rods are vertically arranged. The free end of the first rod is rotatably connected to the output end of the first electric telescopic cylinder, and the free end of the fourth rod is inserted and rotated into both first embedded sliders.

[0015] A pin is inserted into the rotating part of the first section and the output end of the first electric telescopic cylinder.

[0016] The short push plate includes a second push plate, a second transmission rod and a second electric telescopic cylinder. One side of the second push plate is rotatably connected to the second fixed rotating frame, and the other side is equipped with a second sliding groove shell on both the upper and lower surfaces. A second embedded slider is slidably connected in each of the two second sliding groove shells. The main body of the second electric telescopic cylinder is rotatably connected to the frame.

[0017] The second transmission rod consists of four rods connected end to end. The first and third rods are horizontally arranged, and the second and fourth rods are vertically arranged. The free end of the first rod is rotatably connected to the output end of the second electric telescopic cylinder, and the free end of the fourth rod is inserted and rotated into two second embedded sliders.

[0018] The output end of the second electric telescopic cylinder is equipped with a rotating sleeve, and the free end of the first rod is rotatably connected to the rotating sleeve.

[0019] The frame has two first fixed rotating frames, each with a fixed shaft fixedly installed inside. The first push plate and the second push plate are rotatably connected to the two fixed shafts respectively.

[0020] The rotating shafts are located on the outer shell inside the frame and rotate on multiple long and short rollers that are equally spaced. Gear disks are installed on the extended ends of the rotating shafts that pass through the frame, and chains are connected between the multiple gear disks.

[0021] The drive unit includes a motor mounted on a frame, a large transmission disc mounted on the motor output end, and a small transmission disc fixedly mounted to one of the multiple rotating shafts. A belt connects the large transmission disc and the small transmission disc.

[0022] It also includes a discharge mechanism, which includes an attachment plate mounted on the frame. The attachment plate is located below the rotating shaft, and a discharge port is connected to the center of the attachment plate via a funnel frame.

[0023] It also includes a pusher frame, which includes a pusher bracket installed at the midpoint of the machine frame input end and pusher rotating rods rotatably installed at both ends of the pusher bracket. Both pusher rotating rods rotate on a horizontal plane above multiple rotating axes.

[0024] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0025] 1. In this invention, a pusher plate structure is adopted, so that the thin-shelled pecans are pushed and screened between the rotating shafts, and are also pushed laterally by the pusher plate. This causes the thin-shelled pecans to undergo complex translation and tumbling between the rotating shafts, which is conducive to more accurate screening.

[0026] 2. In this invention, an alternating arrangement of large and small rollers is adopted, which combines the features of a grid-type screening mechanism and a roller-type screening structure. While having screening holes, it is not easy to get stuck. When thin-shelled pecans are screened, they need to be axially and radially flipped when passing through the gap between each rotating shaft under the drive of the constantly rotating rollers. This allows for more thorough flipping of the thin-shelled pecans, while reducing the compression of the pecans and reducing the possibility of them being crushed.

[0027] 3. In this invention, an oblique sorting channel is adopted. Materials are input from both sides at the input end of the frame and pushed to the middle area at the output end of the frame. This increases the lateral displacement requirement during the entire sorting process, forcing the thin-shelled pecans to undergo more complex tumbling during the screening process, thus improving the accuracy and stability of the screening structure. Attached Figure Description

[0028] Figure 1 This is a simplified schematic diagram of the connection structure of each piece of equipment in the production line of the present invention;

[0029] Figure 2This is a simplified schematic diagram of the overall structure of the roller washing machine in this invention;

[0030] Figure 3 This is a schematic diagram of the specific structure of the roller washing machine in this invention. Figure 1 ;

[0031] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle;

[0032] Figure 5 This is a schematic diagram of the specific structure of the roller washing machine in this invention. Figure 2 ;

[0033] Figure 6 For the present invention Figure 5 Enlarged view at point B in the middle;

[0034] Figure 7 This is a schematic diagram of the specific structure of the roller washing machine in this invention. Figure 3 ;

[0035] Figure 8 For the present invention Figure 7 Enlarged view at point C;

[0036] Figure 9 For the present invention Figure 7 Enlarged view at point D;

[0037] Figure 10 This is a schematic diagram of the specific structure of the roller washing machine in this invention. Figure 4 ;

[0038] Figure 11 For the present invention Figure 10 Enlarged view of point E in the middle.

[0039] The markings in the diagram are: 01, screening machine; 02, inclined elevator; 03, dryer; 04, conveyor; 05, roller washing machine.

[0040] 1. Support frame; 2. Rotary roller section; 3. Long push plate section; 4. Short push plate section; 5. Discharge mechanism; 6. Pusher frame; 7. Drive unit;

[0041] 11. Frame; 12. First fixed rotating frame; 13. Second fixed rotating frame; 14. Fixed shaft;

[0042] 21. Rotating shaft; 22. Long roller shaft; 23. Short roller shaft; 24. Gear disc; 25. Chain;

[0043] 31. First push plate; 32. First slide groove housing; 33. First embedded slider; 34. First transmission rod; 35. First electric telescopic cylinder; 36. Pin shaft;

[0044] 41. Second push plate; 42. Second slide box housing; 43. Second embedded slider; 44. Second transmission rod; 45. Second electric telescopic cylinder; 46. Rotating sleeve;

[0045] 51. Discharge port; 52. Funnel frame; 53. Attachment plate;

[0046] 61. Pusher bracket; 62. Pusher rotating rod;

[0047] 71. Motor; 72. Large transmission disc; 73. Belt; 74. Small transmission disc. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0049] Example 1, refer to Figures 1-11 A production line for primary processing of thin-shelled pecans includes a roller washing machine 05, a conveyor 04, a dryer 03, and an inclined elevator 02 connected end to end. A screening machine 01 is installed at the output end of the inclined elevator 02. The screening machine 01 includes:

[0050] Support frame 1 includes a frame 11 capable of conveying walnuts in one direction. The two short sides of the frame 11 are set as an input end and an output end. A first fixed rotating frame 12 is installed on both sides of the frame 11 near the input end, and a second fixed rotating frame 13 is installed on both sides of the frame 11 near the output end.

[0051] The roller section 2 and the frame 11 are provided with multiple rotating shafts 21 with equal spacing in the conveying direction;

[0052] The long push plate portion 3 and the short push plate portion 4 are distributed on the long sides of both sides of the frame 11. One end of the long push plate portion 3 and the short push plate portion 4 rotates around the first fixed rotating frame 12, and the other end rotates around the second fixed rotating frame 13.

[0053] And a drive unit 7 that drives multiple rotating shafts 21 to rotate simultaneously.

[0054] In this scheme, the roller washing machine 05 is used to clean the thin-shelled pecans. After cleaning, the thin-shelled pecans are conveyed to the dryer 03 by the conveyor 04 for drying. After drying, the thin-shelled pecans are then lifted and conveyed by the inclined elevator 02 to the input end of the screening machine 01.

[0055] In the screening machine 01, the drive unit 7 drives multiple rotating shafts 21 to rotate simultaneously, which pushes the thin-shelled pecans above the multiple rotating shafts 21, causing the thin-shelled pecans to move from the input end to the output end of the frame 11. At the same time, through the equal spacing between the multiple rotating shafts 21, as the thin-shelled pecans are pushed from the input end to the output end of the frame 11, fruits that do not meet the specified size and the broken thin-shelled pecan fragments during the washing and drying process are screened out.

[0056] Specifically, during the movement of thin-shelled pecans driven by the rotating shaft 21, since the distance between any two adjacent rotating shafts 21 is equal, that is, the multiple rotating shafts 21 are all parallel and equidistant, the thin-shelled pecans tend to pass through the multiple rotating shafts 21 along a straight line perpendicular to the rotating shaft 21 during the process of transporting the thin-shelled pecans by the rotating shaft 21. As a result, the thin-shelled pecans are deflected less, which is insufficient to fully flip the nearly rectangular or long elliptical thin-shelled pecans, making it difficult for the thin-shelled pecans to be flipped to a vertical state for minimum radius screening.

[0057] Therefore, to increase the lateral tumbling of thin-shelled pecans and make them more fully tumbling during the conveying process, resulting in a more thorough and accurate screening effect, the solution adopts a long push plate section 3 and a short push plate section 4. The long push plate section 3 and the short push plate section 4 are spread apart at the input end of the frame 11 with a fixed distance. At the same time, the distance between the long push plate section 3 and the short push plate section 4 at the output end of the frame 11 is adjustable, and there is a gap between their closest positions to avoid collisions. During the screening process on the frame 11, the thin-shelled pecans are pushed towards the center of the frame 11 by the two lateral long push plate sections 3 and short push plate sections 4, increasing the lateral movement generated when the thin-shelled pecans are pushed on the frame 11 and the rotating shaft 21, so as to achieve a more complex tumbling motion effect for the thin-shelled pecans, and ultimately achieve the purpose of thorough and stable separation of thin-shelled pecans.

[0058] The long push plate section 3 includes a first push plate 31, a first transmission rod 34, and a first electric telescopic cylinder 35. One side of the first push plate 31 is rotatably connected to the first fixed rotating frame 12, and the upper and lower sides of the other side are both equipped with first sliding groove shells 32. The two first sliding groove shells 32 are slidably connected with first embedded sliders 33. The main body of the first electric telescopic cylinder 35 is rotatably connected to the frame 11.

[0059] The first transmission rod 34 consists of four rods connected end to end. The first and third rods are horizontally arranged, and the second and fourth rods are vertically arranged. The free end of the first rod is rotatably connected to the output end of the first electric telescopic cylinder 35, and the free end of the fourth rod is inserted and rotated with both first embedded sliders 33. A pin 36 is inserted at the rotation point of the first rod and the output end of the first electric telescopic cylinder 35.

[0060] The first electric telescopic cylinder 35 is set to a reciprocating telescopic working mode. During the telescopic process, the first electric telescopic cylinder 35 pushes the first section of the first transmission rod 34 to rotate and swing around the second section as the central axis. Then, through the swing of the second section, the third and fourth sections drive the first embedded slider 33 to slide in the first slide groove shell 32. During this process, the first push plate 31 deflects around the first fixed rotating frame 12, pushing the thin-shelled pecans above the rotating shaft 21 in the frame 11 towards the short push plate part 4, increasing the lateral flipping effect of the thin-shelled pecans.

[0061] The short push plate part 4 includes a second push plate 41, a second transmission rod 44 and a second electric telescopic cylinder 45. One side of the second push plate 41 is rotatably connected to the second fixed rotating frame 12, and the upper and lower sides of the other side are both equipped with second slide groove shells 42. The two second slide groove shells 42 are slidably connected with second embedded sliders 43. The main body of the second electric telescopic cylinder 45 is rotatably connected to the frame 11.

[0062] The second transmission rod 44 consists of four rods connected end to end. The first and third rods are horizontally arranged, and the second and fourth rods are vertically arranged. The free end of the first rod is rotatably connected to the output end of the second electric telescopic cylinder 45, and the free end of the fourth rod is inserted and rotated into two second embedded sliders 43. A rotating sleeve 46 is installed at the output end of the second electric telescopic cylinder 45, and the free end of the first rod is rotatably connected to the rotating sleeve 46.

[0063] Fixed shafts 14 are fixedly installed in the two first fixed rotating frames 13 of the frame 11, and the first push plate 31 and the second push plate 41 are rotatably connected to the two fixed shafts 14 respectively.

[0064] The second electric telescopic cylinder 45 is set to a reciprocating telescopic working mode. During the telescopic process, the second electric telescopic cylinder 45 pushes the first rod of the second transmission rod 44 to rotate and swing around the second rod as the central axis. Then, through the swing of the second rod, the third and fourth rods drive the second embedded slider 43 to slide in the second slide groove shell 42. During this process, the second push plate 41 deflects around the first fixed rotating frame 12, pushing the thin-shelled pecans above the rotating shaft 21 in the frame 11 towards the long push plate 3, increasing the lateral flipping effect of the thin-shelled pecans.

[0065] Combining the mutual pushing of the thin-shelled pecans by the long push plate 3 and the short push plate 4, and then through the first electric telescopic cylinder 35 forming a rotatable connection with the first transmission rod 34 at the pin 36, and the second electric telescopic cylinder 45 forming a rotatable connection with the second transmission rod 44 at the rotating sleeve 46, the first push plate 31 and the second push plate 41 do not produce the same deflection speed and trajectory, increasing the complexity of the motion generated by the lateral pushing of the thin-shelled pecans on the frame 11.

[0066] Multiple rotating shafts 21 rotate on the outer shell inside the frame 11, with multiple long rollers 22 and short rollers 23 distributed at equal intervals. Gear disks 24 are installed at the extension ends of the multiple rotating shafts 21 that pass through the frame 11, and chains 25 are connected between the multiple gear disks 24 for transmission. The drive unit 7 includes a motor 71 installed on the frame 11, a large transmission disk 72 installed at the output end of the motor 71, and a small transmission disk 74 fixedly installed with one of the multiple rotating shafts 21. A belt 73 is connected between the large transmission disk 72 and the small transmission disk 74 for transmission.

[0067] The arrangement of the long roller shaft 22 and the short roller shaft 23, and the crisscrossing distribution of the long roller shaft 22 and the short roller shaft 23 on the two adjacent rotating shafts 21, divides the long strip gap between the rotating shafts 21 into a sawtooth gap. This makes it easier for the thin-shelled pecans to tumble when pushed laterally, creating various directions of tumbling and rolling at the gap between the long roller shaft 22 and the short roller shaft 23. This is beneficial for screening the thin-shelled pecans. Furthermore, the gap between the long roller shaft 22 and the short roller shaft 23 is easier to adjust than the gap between the rotating shafts 21. By increasing or decreasing the radius or axial length of the long roller shaft 22 and the short roller shaft 23, the screening gap can be adjusted to suit more different screening needs.

[0068] The motor 71 is configured to drive the small transmission disc 74 to rotate via the large transmission disc 72 and the belt 73. When the small transmission disc 74 is axially connected to one of the multiple rotating shafts 21, the small transmission disc 74 further drives the rotating shaft 21 and the gear disc 24 mounted on the rotating shaft 21 to rotate. At the same time, through the chain 25 connecting the multiple gear discs 24, all the rotating shafts 21 rotate simultaneously, ultimately creating a driving effect on the thin-shelled pecans.

[0069] The system also includes a discharge mechanism 5, which includes an attachment plate 53 mounted on the frame 11. The attachment plate 53 is located below the rotating shaft 21, and the center of the attachment plate 53 is connected to a discharge port 51 via a funnel frame 52.

[0070] Specifically, the discharge mechanism 5 is designed to receive impurities and debris screened between the frames 11. The funnel-shaped structure of the funnel frame 52 allows debris to fall through the funnel frame 52 to the discharge port 51, which is used to collect impurities and reduce dust, while preventing debris from falling onto electrical equipment such as the motor 71, the first electric telescopic cylinder 35, and the second electric telescopic cylinder 45.

[0071] It also includes a pusher frame 6, which includes a pusher bracket 61 installed at the midpoint of the input end of the frame 11 and pusher rods 62 rotatably installed at both ends of the pusher bracket 61. Both pusher rods 62 rotate on a horizontal plane above multiple rotating shafts 21.

[0072] Specifically, the pusher frame 6 is designed to rotate the two pusher rods 62 until their free ends come into contact with each other, thus forming a closed triangular structure with the pusher bracket 61 and the two pusher rods 62. This structure prevents the thin-shelled pecans from being located at the center of the frame 11 at the input end. Combined with the effect of the long pusher plate 3 and the short pusher plate 4 causing the thin-shelled pecans to move closer to the center of the frame 11 at the output end, the thin-shelled pecans enter from both sides at the input end of the frame 11 and are discharged from the center of the output end of the frame 11. This increases the tumbling effect of the thin-shelled pecans during the pushing process on the frame 11 and ultimately increases the accuracy of the screening of the thin-shelled pecans.

[0073] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A production line for the primary processing of pecan nuts, comprising, in succession, a roller washer (05), a conveyor (04), a drying machine (03) and an inclined elevator (02), characterized in that, The inclined elevator (02) output end is provided with a screening machine (01); the screening machine (01) comprises: Support frame (1), the support frame (1) includes the frame (11) that can one-way transport walnut, the frame (11) two shorter sides are set as input end and output end;The frame (11) two sides close to the input end are both installed with first fixed swing frame (12), the frame (11) two sides close to the output end are both installed with second fixed swing frame (13); Rotating roller part (2), the frame (11) conveying direction is provided with multiple rotating shafts (21) with equal spacing; The long push plate part (3) and the short push plate part (4) distributed on the two longer sides of the frame (11), one end of the long push plate part (3) and the short push plate part (4) rotates around two first fixed swing frames (12) respectively, and the other end rotates around two second fixed swing frames (13) respectively; And drive part (7) that drives multiple rotating shafts (21) to rotate simultaneously; The long push plate part (3) is provided with first push plate (31), first transmission rod (34) and first electric telescopic cylinder (35), one side of the first push plate (31) is rotatably connected with the first fixed swing frame (12), the other side is installed with first sliding groove shell (32) on the upper and lower surfaces, the first sliding groove shell (32) is slidably connected with first embedded sliding block (33) in two, the main part of the first electric telescopic cylinder (35) is rotatably connected with the frame (11); The first transmission rod (34) is composed of four sections of rods connected with each other, wherein the first section and the third section are horizontally arranged, the second section and the fourth section are vertically arranged, and the free end of the first section is rotatably connected with the output end of the first electric telescopic cylinder (35), and the free end of the fourth section is rotatably connected with the two first embedded sliding blocks (33); The short push plate part (4) is provided with second push plate (41), second transmission rod (44) and second electric telescopic cylinder (45), one side of the second push plate (41) is rotatably connected with the second fixed swing frame (12), the other side is installed with second sliding groove shell (42) on the upper and lower surfaces, the second sliding groove shell (42) is slidably connected with second embedded sliding block (43) in two, the main part of the second electric telescopic cylinder (45) is rotatably connected with the frame (11); The second transmission rod (44) is composed of four rods connected with each other, wherein the first rod and the third rod are horizontally arranged, the second rod and the fourth rod are vertically arranged, and the free end of the first rod is rotatably connected with the output end of the second electric telescopic cylinder (45), and the free end of the fourth rod is rotatably connected with the two second embedded sliding blocks (43); Multiple rotating shafts (21) are rotatably provided with multiple long roller shafts (22) and short roller shafts (23) with equal spacing on the shell in the frame (11), and multiple gear plates (24) are installed on the extension end of the frame (11) penetrating the multiple rotating shafts (21), and the multiple gear plates (24) are drivingly connected with the chain (25) between them.

2. A production line for the primary processing of Pecan nuts as claimed in claim 1, characterized in that: The first section and the output end of the first electric telescopic cylinder (35) are rotatably inserted with pin shaft (36).

3. A production line for the preliminary processing of pecan nuts according to claim 2, characterized in that: The output end of the second electric telescopic cylinder (45) is provided with a rotating sleeve (46), and the free end of the first rod is rotationally connected with the rotating sleeve (46).

4. A production line for the preliminary processing of pecan nuts according to claim 2, characterized in that: The two first fixed rotating frames (13) of the rack (11) are fixedly provided with fixed shafts (14), and the first push plate (31) and the second push plate (41) are rotationally connected with the two fixed shafts (14).

5. The production line for the preliminary processing of pecan nuts according to claim 1, characterized in that: The driving part (7) comprises a motor (71) mounted on the rack (11), a large transmission disc (72) mounted at the output end of the motor (71), and a small transmission disc (74) fixedly mounted with one of the plurality of rotating shafts (21), and the large transmission disc (72) and the small transmission disc (74) are transmissionally connected with a belt (73).

6. A production line for the preliminary processing of pecan nuts according to claim 1, characterized in that: The discharge mechanism (5) comprises an attachment plate (53) mounted on the rack (11), the attachment plate (53) is arranged below the rotating shaft (21), and the center of the lower part of the attachment plate (53) is connected with a discharge port (51) through a funnel frame (52).

7. A production line for the initial processing of pecan nuts according to any one of claims 1 to 6, characterized in that: The pushing mechanism (6) comprises a pushing support (61) mounted at the midpoint of the input end of the rack (11) and a pushing rotating rod (62) rotationally mounted at both ends of the pushing support (61), and the two pushing rotating rods (62) are rotationally arranged on the horizontal plane above the plurality of rotating shafts (21).

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