Multi-unit grading device for crayfish processing

Abstract

The invention relates to the technical field of crayfish processing, and discloses a crayfish processing multi-unit grading device which comprises a rack, a supporting frame, a feeding hopper, a screening assembly, a regulation and control assembly, a separation assembly, a material distribution assembly and a driving assembly, the supporting frame is arranged on the outer side of the rack, and the bottom end of the feeding hopper is fixedly connected with the supporting frame; the two ends of the screening assembly are rotationally matched with the supporting frame and the adjusting and controlling assembly correspondingly. Compared with the prior art, the lobster screening device has the following advantages and effects that the driving assembly drives the supporting frame to move, so that the feeding hopper on the supporting frame, the screening assembly and the distributing assembly can keep moving synchronously, lobster individuals and broken limbs can be screened out in a unit-by-unit mode while rapid feeding and screening of lobsters are kept, the situation of secondary screening is avoided, and the screening efficiency is improved. And the distance between the screening rods is controlled through the control assembly, so that the lobsters of different sizes and types are subjected to adaptive screening, the application range of the screening rods is widened, and the processing flexibility of the screening rods is improved.

Description

Technical Field

[0001] The invention relates to the technical field of crayfish processing, and in particular to a multi-unit grading device for crayfish processing. Background Art

[0002] Crayfish has delicious meat and unique taste. It can be cooked in various ways, such as steamed, braising, spicy, etc., to present a mouth-watering taste. Whether you like heavy flavors such as spicy and hot, or you like light flavors, you can find the right option for yourself in crayfish.

[0003] In recent years, the processing of ready-to-eat crayfish has become a new opportunity for the industry's growth. Such products usually include quick-frozen shrimp tails, quick-frozen shrimp meats, shrimp shell calcium tablets and other foods. After purchase, consumers only need to simply heat them up before eating, eliminating the tedious cooking process.

[0004] There are differences in the selling prices of lobsters of different sizes in the market. Generally speaking, larger lobsters are more expensive because they are more attractive in taste, texture and appearance. Therefore, when processing lobsters, grading devices can be used to grade the lobsters by size to meet the needs of different consumers and achieve price differentiation.

[0005] Currently, in the lobster grading process, lobsters often have broken limbs and other parts when they are fed. Currently, it is still difficult to quickly separate the separated lobsters from the broken limb debris during grading, and secondary grading is required, which affects efficiency. Summary of the invention

[0006] The purpose of the present invention is to provide a multi-unit grading device for crayfish processing, which can quickly separate the lobsters from broken limbs and debris, thereby improving the processing efficiency.

[0007] The above technical objectives of the present invention are achieved through the following technical solutions: a multi-unit grading device for crayfish processing, comprising a frame, a support frame, a feed hopper, a screening assembly, a regulating assembly, a partition assembly, a material dividing assembly and a driving assembly;

[0008] The supporting frame is arranged on the outside of the frame, the bottom end of the feed hopper is fixedly connected to the supporting frame, the two ends of the screening assembly are respectively rotatably cooperated with the supporting frame and the regulating assembly, the bottom end of the regulating assembly is kept fixed to the frame, the partitioning assembly is arranged on the outside of the screening assembly to prevent the crayfish from falling out of the screening assembly, the dividing assembly is located below the screening assembly, when the crayfish are screened by size through the screening assembly, the screened lobsters and broken limbs can be screened out separately through the dividing assembly, and the output end of the driving assembly is connected to the supporting frame to drive the screening assembly and the dividing assembly to move through the driving assembly.

[0009] The present invention is further configured as follows: the support frame includes a horizontal frame, a vertical frame fixedly connected to the horizontal frame at the top and a force-bearing frame fixedly mounted at the bottom of the vertical frame; the screening material assembly includes a mounting plate rotatably connected to the horizontal frame at the bottom and a screening material rod fixedly connected to the outer side of the mounting plate; the screening material rod is symmetrically provided at two locations on the mounting plate, and the angle between the two screening material rods gradually increases along the direction of the regulating assembly.

[0010] By adopting the above technical solution, lobsters of different sizes can be fed continuously along the gap between the two screening rods toward the end away from the mounting plate.

[0011] The present invention is further configured as follows: a corresponding feed port is provided at one end of the feed hopper close to the screen rod, the screen rod includes a main screen rod fixedly connected to the mounting plate at one end, an auxiliary screen rod slidably mounted on the other end of the main screen rod, and a spring fixed between the main screen rod and the auxiliary screen rod, and one end of the auxiliary screen rod away from the main screen rod is fixed to the regulating assembly.

[0012] By adopting the above technical solution, when the auxiliary screen rod is expanded outward or retracted inward by the regulating component, it can be telescopically slid on the main screen rod.

[0013] The present invention is further configured as follows: the regulating component includes a support whose bottom end is fixedly connected to the frame, a side plate fixedly arranged on one side of the support, a control component slidably arranged on the support, a compression spring whose two ends are respectively fixedly connected to the control component and the side plate, and the outer side of the control component is rotatably connected to the screening rod.

[0014] The present invention is further configured as follows: a connecting plate is fixedly provided at one end of the auxiliary screen rod close to the control component, a guide rail is opened on the upper surface of the support, and a limit frame is fixedly provided on the outer side of the support, the control component includes a slide cylinder slidably connected to the guide rail and the limit frame on the outer side, an electromagnetic part fixed to the end of the slide cylinder away from the side plate, and an installation frame fixedly connected to the outer side of the slide cylinder, and the inner wall of the installation frame is rotatably connected to the connecting plate.

[0015] By adopting the above technical solution, when it is necessary to expand the angle between the two screening rods, the electromagnetic parts can be energized to generate repulsive force.

[0016] The present invention is further configured as follows: the partition assembly includes a curtain frame with a bottom end fixedly connected to the horizontal frame, a frame rod fixedly mounted on the outside of the curtain frame, an inclined frame with two ends respectively fixedly connected to the curtain frame and the frame rod, and a partition curtain with one end fixed to the inclined frame, the other end of the partition curtain is fixedly connected to the main screen rod and the auxiliary screen rod, the partition curtain is made of elastic material, and the inclination angle of the inclined frame is consistent with that of the adjacent screen rod.

[0017] By adopting the above technical solution, both sides of each group of screening rods on each screening assembly can be provided with inclined partition curtains to assist in feeding.

[0018] The present invention is further configured as follows: the material dividing assembly includes a support frame whose outer side is fixed to the force-bearing frame, side baffles fixedly arranged at the left and right ends of the support frame, screen rods fixedly connected to the support frame at both ends, and a partition plate fixed to the support frame at the bottom end; the support frame as a whole is in an inclined state, the screen rods are arranged at intervals along the width direction of the support frame, and screen openings for screening out broken limbs of crayfish are formed between adjacent screen rods.

[0019] By adopting the above technical solution, the intervals of each partition plate correspond to a batch of lobsters of different sizes, so that the batch of lobsters can be received in batches under the partition of the partition plate and discharged along the screen rod.

[0020] The present invention is further configured as follows: the driving assembly includes a driving frame fixedly connected to the outer side of the force-bearing frame, a reciprocating assembly connected to the driving frame at the top, a pressing frame assembly arranged on the driving frame, and an output assembly connected to the reciprocating assembly.

[0021] By adopting the above technical solution, the driving frame can move under the drive of the reciprocating assembly and cooperate with the pressing frame assembly.

[0022] The present invention is further configured as follows: the driving frame includes a driving seat fixedly connected to the force-bearing frame on the outside, a support rod fixedly mounted on the inner wall of the driving seat, a rotating frame with one end extending into the driving seat, a guide opening opened on the rotating frame, and an axle rod rotatably connected to the rotating frame on the outside; the rotating frame rotatably contacts with the support rod through the guide opening, one end of the axle rod away from the rotating frame is fixedly connected to the frame, and a guide wheel is rotatably installed on the side of the rotating frame close to the reciprocating assembly; the reciprocating assembly includes a rotating column located below the guide wheel, an inclined surface opened at the top of the rotating column, a rotating rod fixedly connected to the top of the rotating column, and a fixed frame fixedly connected to the frame on the outside; the top of the rotating column rotatably contacts with the guide wheel through the inclined surface, and the outer side of the rotating rod is rotatably installed on the fixed frame.

[0023] By adopting the above technical solution, it is convenient to provide a stable rotation support force for the rotating column.

[0024] The present invention is further configured as follows: a block is fixedly provided on the upper surface of the rotating frame, the pressure frame assembly includes a pressure frame in sliding contact with the upper surface of the rotating frame, a pull rod fixedly connected to the pressure frame at the top end, a base frame fixedly connected to the fixed frame at the bottom end, and a spring respectively fixed to the base frame and the pull rod at both ends, the outer side of the pull rod is slidably connected to the base frame, and the output assembly includes a gear coaxially fixed to the bottom end of the rotating rod, a transmission belt meshed with the outer side of the gear, and a motor whose output end is fixed to the gear.

[0025] By adopting the above technical solution, the gear is driven to rotate by the motor, and the transmission belt transmits the transmission force to make the rotating rod rotate synchronously.

[0026] The beneficial effects of the present invention are:

[0027] 1. The support frame is driven by the driving component to move, so that the feed hopper, screening component and material dividing component on the support frame can keep moving synchronously. While keeping the lobsters fed and screened quickly, the lobsters and broken limbs can be screened out in units to avoid the situation of secondary screening and improve the processing efficiency;

[0028] 2. When in use, the screening rod can be moved through the mounting plate and the connecting plate. The spacing of the screening rod can be controlled by the control component according to the size of the graded lobsters, so as to adapt the screening material to lobsters of different sizes, thereby improving the use range and processing flexibility of the screening rod;

[0029] 3. When the lobster is being transported on the screening rod, if it accidentally falls out of the rod body, the inclined rack and the curtain can be used to cooperate with the screening rod, so that the lobster can be stably transported along the surface of the rod body to improve the orderliness of the processing, and there is no need for manual correction and picking up of materials;

[0030] 4. When the support frame is moving, the output assembly cooperates with the reciprocating assembly to enable the driving frame to continuously apply force to the support frame to meet the reciprocating activity needs of the support frame, so as to quickly grade and screen the lobsters and ensure processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 A schematic diagram of the structure of a multi-unit grading device for processing crayfish provided by an embodiment of the present invention;

[0033] Figure 2 It is a structural schematic diagram of a screening material assembly in an embodiment of the present invention;

[0034] Figure 3 This is a schematic diagram of the structure of the control component in an embodiment of the present invention;

[0035] Figure 4 It is a structural schematic diagram of a screening rod in an embodiment of the present invention;

[0036] Figure 5 It is a structural schematic diagram of a material distribution component in an embodiment of the present invention;

[0037] Figure 6 It is a schematic diagram of the structure of the driving component in an embodiment of the present invention;

[0038] Figure 7Schematic diagram of the structure of the output component in the embodiment of the present invention.

[0039] In the figure, 1, frame; 2, support frame; 3, feed hopper; 4, screening assembly; 5, regulating assembly; 6, partition assembly; 7, material dividing assembly; 8, driving assembly; 21, horizontal frame; 22, vertical frame; 23, force frame; 31, feeding port; 41, mounting plate; 42, screening rod; 421, main screening rod; 422, auxiliary screening rod; 423, spring; 424, connecting plate; 51, support; 52, side plate; 53, control assembly; 54, compression spring; 511, guide rail; 512, limit frame; 531, slide cylinder; 532, electromagnetic component; 533, mounting frame; 61, curtain frame; 62, frame rod; 63, inclined frame; 64, partition curtain; 71, support frame; 72, side baffle; 73, sieve rod; 74, partition plate; 81, drive frame; 82, reciprocating assembly; 83, pressure frame assembly; 84, output assembly; 811, drive seat; 812, support rod; 813, rotating frame; 814, guide port; 815, shaft rod; 816, guide wheel; 817, stopper; 821, rotating column; 822, inclined plane; 823, rotating rod; 824, fixed frame; 831, pressure frame; 832, pull rod; 833, bottom frame; 834, spring; 841, gear; 842, transmission belt; 843, motor. DETAILED DESCRIPTION

[0040] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] The embodiment of the present invention specifically provides a multi-unit grading device for processing crayfish, please refer to Figure 1 , including a frame 1, a support frame 2, a feed hopper 3, a screening component 4, a regulating component 5, a partition component 6, a material dividing component 7 and a driving component 8.

[0042] Among them, the support frame 2 is arranged on the outside of the frame 1, and the support frame 2 can move on the outside of the frame 1. The bottom end of the feed hopper 3 is fixedly connected to the support frame 2. The two ends of the screening component 4 are respectively rotatably matched with the support frame 2 and the regulating component 5. The bottom end of the regulating component 5 is kept fixed with the frame 1. The partition component 6 is arranged on the outside of the screening component 4 to prevent the crayfish from falling out of the screening component 4. The dividing component 7 is located below the screening component 4. After the crayfish are screened by size through the screening component 4, the screened lobsters and broken limbs can be screened out separately through the dividing component 7. The output end of the driving component 8 is connected to the support frame 2 to drive the screening component 4 and the dividing component 7 to move through the driving component 8.

[0043] For further information, please refer to Figure 1 and Figure 2 The support frame 2 includes a horizontal frame 21, a vertical frame 22 fixedly connected to the horizontal frame 21 at the top, and a force-bearing frame 23 fixed to the bottom of the vertical frame 22. When the force-bearing frame 23 moves up and down under force, it will drive the horizontal frame 21 to move synchronously, so as to drive the screening assembly 4 to move up and down synchronously, so as to facilitate the feeding of lobsters when screening the body shape;

[0044] Among them, the screening component 4 includes a mounting plate 41 whose bottom end is rotatably connected to the cross frame 21 and a screening rod 42 fixedly connected to the outer side of the mounting plate 41. The screening rod 42 is symmetrically arranged at two locations on the mounting plate 41, and the angle between the two screening rods 42 gradually expands along the direction of the regulating component 5, so that lobsters of different sizes can be continuously fed along the gap between the two screening rods 42 toward the end away from the mounting plate 41 until they fall after their size is smaller than the gap, thereby completing the screening of lobsters of different sizes.

[0045] Specifically, a corresponding feed port 31 is provided at one end of the feed hopper 3 close to the screening rod 42, and each feed port 31 corresponds to the screening gap between each group of screening rods 42. After the lobster is fed into the feed hopper 3, it will be dispersed along the feed port 31 and fed into each group of screening rods 42 for screening.

[0046] When implementing, please refer to Figure 2 and Figure 4 The sieving rod 42 includes a main sieve rod 421 fixedly connected to the mounting plate 41 at one end, a secondary sieve rod 422 slidably mounted on the other end of the main sieve rod 421, and a spring 423 fixed between the main sieve rod 421 and the secondary sieve rod 422. The interior of the main sieve rod 421 is a hollow structure to facilitate the sliding of the secondary sieve rod 422. The end of the secondary sieve rod 422 away from the main sieve rod 421 is fixed to the regulating component 5, so that when the secondary sieve rod 422 is expanded outward or retracted through the regulating component 5, it can be telescopically slid on the main sieve rod 421 to ensure sufficient rotation length.

[0047] For further information, please refer to Figure 3 The regulating component 5 includes a support 51 fixedly connected to the frame 1 at the bottom, a side plate 52 fixedly arranged on one side of the support 51, a control component 53 slidably arranged on the support 51, and a compression spring 54 fixedly connected to the control component 53 and the side plate 52 at both ends respectively. The outer side of the control component 53 is rotatably connected to the screening rod 42;

[0048] It is worth mentioning that the two groups of screening rods 42 on each screening component 4 are respectively connected to a control component 53. Under the control and regulation of the control component 53, the ends of the two screening rods 42 away from the mounting plate 41 can expand horizontally outward or retract inward, thereby adjusting the screening angle of the two screening rods 42 and thus the size of the lobsters that can be screened, so as to meet the lobster screening requirements in different situations.

[0049] Specifically, a connecting plate 424 is fixedly provided at one end of the auxiliary screen rod 422 close to the control assembly 53, a guide rail 511 is provided on the upper surface of the support 51, and a limit frame 512 is fixedly provided on the outer side of the support 51. The control assembly 53 includes a slide 531 slidably connected to the guide rail 511 and the limit frame 512 on the outer side, an electromagnetic member 532 fixedly provided at one end of the slide 531 away from the side plate 52, and a mounting frame 533 fixedly connected to the outer side of the slide 531. The electromagnetic member 532 is a commonly used magnetic force generating component. The inner wall of the mounting frame 533 is rotatably connected to the connecting plate 424. When it is necessary to expand When the angle between the two sieving rods 42 is small, the electromagnetic parts 532 can be energized and repulsive force can be generated, so that the two symmetrically distributed slide cylinders 531 can slide away from each other, and the sliding stroke can be controlled by controlling the magnitude of the magnetic force, thereby controlling the stroke between the slide cylinders 531, so that one end of the two sieving rods 42 expands outward and the other end rotates through the mounting plate 41, thereby controlling the angle between the sieving rods 42; if reset is required, the slide cylinder 531 can be reset through the compression spring 54 after the electromagnetic part 532 is turned off, so that the two sieving rods 42 are reset and the angle is reduced.

[0050] For further information, please refer to Figure 2 and Figure 3 The partition assembly 6 includes a curtain frame 61 fixedly connected to the horizontal frame 21 at the bottom, a frame rod 62 fixedly mounted on the outside of the curtain frame 61, an inclined frame 63 fixedly connected to the curtain frame 61 and the frame rod 62 at both ends, and a partition curtain 64 fixed to the inclined frame 63 at one end. The frame rod 62 extends in the direction where the regulating assembly 5 is located, so as to provide installation support for the inclined frame 63.

[0051] During implementation, the other end of the partition curtain 64 is fixedly connected to the main screen rod 421 and the auxiliary screen rod 422. The partition curtain 64 is made of elastic material, so that when the main screen rod 421 and the auxiliary screen rod 42 adjust the screening angle, the partition curtain 64 can maintain a stretchable and fitting state. The inclination angle of the inclined frame 63 is consistent with the adjacent screening rod 42, so that each group of screening rods 42 on each screening assembly 4 can have inclined partition curtains 64 on both sides to assist in feeding, so that when the lobster is fed into the screening gap between the two screening rods 42 through the feed port 31, if the lobster accidentally slips off the screening rod 42 after being subjected to the vibration force, it can be received by the partition curtain 64 and slide back into the screening gap between the screening rods 42 along the partition curtain 64 for screening, thereby improving the stability of screening.

[0052] For further information, please refer to Figure 5 and Figure 7 The material dividing assembly 7 includes a support frame 71 fixed to the force frame 23 on the outside, side baffles 72 fixed to the left and right ends of the support frame 71, a sieve rod 73 fixedly connected to the support frame 71 at both ends, and a partition plate 74 fixed to the support frame 71 at the bottom, so that when the force frame 23 slides up and down, the support frame 71 can be driven to move synchronously with the force, thereby improving the discharge efficiency of the lobster after screening. The support frame 71 is in an inclined state as a whole, so as to facilitate the discharge of the lobster after screening.

[0053] During implementation, the sieve rods 73 are arranged at intervals along the width direction of the support frame 71, and sieve openings for screening out crayfish broken limbs are formed between adjacent sieve rods 73. The intervals between each partition plate 74 correspond to a batch of lobsters of different sizes, so that the lobsters of this batch can be received in batches under the partition of the partition plate 74 and discharged along the sieve rods 73, and the lobster broken limb receiving piece can be placed under the sieve rods 73, so that the lobster broken limbs with smaller structures can fall out along the sieve openings between the sieve rods 73, thereby being quickly separated from the screened lobsters to avoid mixing and the need for subsequent secondary screening of broken limbs.

[0054] For further information, please refer to Figure 5 The driving assembly 8 includes a driving frame 81 fixedly connected to the outer side of the force-bearing frame 23, a reciprocating assembly 82 connected to the driving frame 81 at the top, a pressing frame assembly 83 arranged on the driving frame 81 and an output assembly 84 connected to the reciprocating assembly 82, so that the driving frame 81 can move under the drive of the reciprocating assembly 82, and cooperate with the pressing frame assembly 83 to enable the force-bearing frame 23 to move up and then down, and so on, to drive the screening rod 42 and the support frame 71 to move synchronously, so as to facilitate the screening and discharge of lobsters.

[0055] For details, please refer to Figure 7 The driving frame 81 includes a driving seat 811 fixedly connected to the force-bearing frame 23 on the outside, a support rod 812 fixedly mounted on the inner wall of the driving seat 811, a rotating frame 813 with one end extending into the driving seat 811, a guide port 814 opened on the rotating frame 813, and a shaft rod 815 rotatably connected to the rotating frame 813 on the outside. The rotating frame 813 is in rotational contact with the support rod 812 through the guide port 814, and the end of the shaft rod 815 away from the rotating frame 813 is fixedly connected to the frame 1. A guide wheel 816 is rotatably installed on the side of the rotating frame 813 close to the reciprocating assembly 82, so that the rotating frame 813 can rotate with the shaft rod 815 as a fulcrum.

[0056] The reciprocating assembly 82 includes a rotating column 821 located below the guide wheel 816, an inclined surface 822 opened at the top of the rotating column 821, a rotating rod 823 fixedly connected to the rotating column 821 at the top, and a fixing frame 824 fixedly connected to the frame 1 at the outside. The top of the rotating column 821 is in rotational contact with the guide wheel 816 through the inclined surface 822, so that when the guide wheel 816 rotates, a gap will appear between the guide wheel 816 and the rotating column 821 at the bottom due to the inclined surface 822. At this time, the rotating rod 823 is fixedly connected to the rotating column 821 at the top, and the fixing frame 824 is fixedly connected to the frame 1 at the outside. The overpressure frame assembly 83 presses down one end of the rotating frame 813 with a guide wheel 816, so that the rotating frame 813 rotates with the shaft rod 815 as a fulcrum, thereby moving the force-bearing frame 23 upward, and then when the rotating column 821 continues to rotate and reset, the rotating frame 813 is reset, and the force-bearing frame 23 is self-repositioned, so that the force-bearing frame 23 can reciprocate upward and reset. The outer side of the rotating rod 823 is rotatably installed on the fixed frame 824 to provide a stable rotation support force for the rotating column 821.

[0057] During implementation, a stopper 817 is fixed on the upper surface of the rotating frame 813, and the pressing frame assembly 83 includes a pressing frame 831 that is in sliding contact with the upper surface of the rotating frame 813, a pull rod 832 that is fixedly connected to the pressing frame 831 at the top, a bottom frame 833 that is fixedly connected to the fixed frame 824 at the bottom, and a spring 834 that is respectively fixed to the bottom frame 833 and the pull rod 832 at both ends. The stopper 817 is used to block the pressing frame 831. When a gap appears at the bottom end of the guide wheel 816, since the spring 834 is in a stretched state, a downward pulling force is applied to the pressing frame 831 at this time, and the outer side of the pull rod 832 is slidably connected to the bottom frame 833, so that the pressing frame 831 presses down the rotating frame 813, so that the rotating frame 813 rotates and lifts the force-bearing frame 23.

[0058] Among them, the output component 84 includes a gear 841 coaxially fixed to the bottom end of the rotating rod 823, a transmission belt 842 meshing with the outer side of the gear 841, and a motor 843 whose output end is fixed to the gear 841. The motor 843 is fixed on the fixed frame 824 to drive the gear 841 to rotate through the motor 843, and the transmission belt 842 transmits the transmission force to make the rotating rod 823 rotate synchronously.

[0059] The control method of the present invention is to control by manually starting and closing the switch. The wiring diagram of the power element and the provision of power supply are common knowledge in the field, and the present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and wiring layout in detail.

[0060] 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, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-unit grading device for crayfish processing, characterized in that: It comprises a frame (1), a support frame (2), a feed hopper (3), a screening component (4), a regulating component (5), a partition component (6), a material distribution component (7) and a driving component (8); The support frame (2) is arranged outside the frame (1), the bottom end of the feed hopper (3) is fixedly connected to the support frame (2), the two ends of the screening component (4) are respectively rotatably matched with the support frame (2) and the regulating component (5), the bottom end of the regulating component (5) is kept fixed to the frame (1), the partition component (6) is arranged outside the screening component (4) to prevent the crayfish from falling off the screening component (4), the dividing component (7) is located below the screening component (4), when the crayfish are screened by the screening component (4) according to their size, the screened crayfish and broken limbs can be screened out respectively by the dividing component (7), and the output end of the driving component (8) is connected to the support frame (2) so as to drive the screening component (4) and the dividing component (7) to move through the driving component (8).

2. A multi-unit grading device for crayfish processing according to claim 1, characterized in that: The support frame (2) comprises a horizontal frame (21), a vertical frame (22) fixedly connected to the horizontal frame (21) at the top, and a force-bearing frame (23) fixedly mounted on the bottom of the vertical frame (22); the screening material assembly (4) comprises a mounting plate (41) rotatably connected to the horizontal frame (21) at the bottom, and screening material rods (42) fixedly connected to the outer side of the mounting plate (41); the screening material rods (42) are symmetrically arranged at two locations on the mounting plate (41), and the angle between the two screening material rods (42) gradually increases along the direction of the regulating assembly (5).

3. A multi-unit grading device for crayfish processing according to claim 2, characterized in that: The feed hopper (3) is provided with a corresponding feed port (31) at one end close to the sieve rod (42); the sieve rod (42) comprises a main sieve rod (421) fixedly connected to the mounting plate (41) at one end, an auxiliary sieve rod (422) slidably mounted on the other end of the main sieve rod (421), and a spring (423) fixedly arranged between the main sieve rod (421) and the auxiliary sieve rod (422); and one end of the auxiliary sieve rod (422) away from the main sieve rod (421) is fixed to the regulating assembly (5).

4. A multi-unit grading device for crayfish processing according to claim 3, characterized in that: The regulating component (5) comprises a support (51) whose bottom end is fixedly connected to the frame (1), a side plate (52) fixedly arranged on one side of the support (51), a control component (53) slidably arranged on the support (51), and a compression spring (54) whose two ends are respectively fixedly connected to the control component (53) and the side plate (52); the outer side of the control component (53) is rotatably connected to the screening rod (42).

5. A multi-unit grading device for crayfish processing according to claim 4, characterized in that: A connecting plate (424) is fixedly provided at one end of the auxiliary screen rod (422) close to the control component (53), a guide rail (511) is provided on the upper surface of the support (51), and a limit frame (512) is fixedly provided on the outer side of the support (51), and the control component (53) comprises a slide cylinder (531) slidably connected to the guide rail (511) and the limit frame (512) on the outer side, an electromagnetic component (532) fixedly provided at one end of the slide cylinder (531) away from the side plate (52), and an installation frame (533) fixedly connected to the outer side of the slide cylinder (531), and the inner wall of the installation frame (533) is rotatably connected to the connecting plate (424).

6. A multi-unit grading device for crayfish processing according to claim 5, characterized in that: The partition assembly (6) comprises a curtain frame (61) whose bottom end is fixedly connected to the horizontal frame (21), a frame rod (62) fixedly mounted on the outside of the curtain frame (61), an inclined frame (63) whose two ends are respectively fixedly connected to the curtain frame (61) and the frame rod (62), and a partition curtain (64) whose one end is fixed to the inclined frame (63), the other end of the partition curtain (64) is fixedly connected to the main sieve rod (421) and the auxiliary sieve rod (422), the partition curtain (64) is made of elastic material, and the inclination angle of the inclined frame (63) is consistent with that of the adjacent sieve rod (42).

7. A multi-unit grading device for crayfish processing according to claim 6, characterized in that: The material dividing assembly (7) comprises a support frame (71) whose outer side is fixed to the force-bearing frame (23), side baffles (72) fixedly arranged at the left and right ends of the support frame (71), sieve rods (73) whose two ends are fixedly connected to the support frame (71), and a partition plate (74) whose bottom end is fixed to the support frame (71), the support frame (71) is in an inclined state as a whole, the sieve rods (73) are arranged at intervals along the width direction of the support frame (71), and sieve openings for screening out crayfish broken limbs are formed between adjacent sieve rods (73).

8. A multi-unit grading device for crayfish processing according to claim 7, characterized in that: The driving assembly (8) comprises a driving frame (81) fixedly connected to the outer side of the force-bearing frame (23), a reciprocating assembly (82) connected to the driving frame (81) at the top, a pressing frame assembly (83) arranged on the driving frame (81), and an output assembly (84) connected to the reciprocating assembly (82).

9. A multi-unit grading device for crayfish processing according to claim 8, characterized in that: The driving frame (81) comprises a driving seat (811) fixedly connected to the force-bearing frame (23) at the outer side, a support rod (812) fixedly mounted on the inner wall of the driving seat (811), a rotating frame (813) with one end extending into the driving seat (811), a guide opening (814) provided on the rotating frame (813), and a shaft rod (815) rotatably connected to the rotating frame (813) at the outer side. The rotating frame (813) is in rotational contact with the support rod (812) through the guide opening (814), and one end of the shaft rod (815) away from the rotating frame (813) is fixedly connected to the frame (1), and the rotating frame (813) is rotated to the support rod (812). A guide wheel (816) is rotatably mounted on one side of the frame (813) close to the reciprocating assembly (82). The reciprocating assembly (82) comprises a rotary column (821) located below the guide wheel (816), an inclined surface (822) provided at the top of the rotary column (821), a rotary rod (823) fixedly connected to the rotary column (821) at the top, and a fixed frame (824) fixedly connected to the frame (1) at the outer side. The top of the rotary column (821) is in rotational contact with the guide wheel (816) via the inclined surface (822), and the outer side of the rotary rod (823) is rotatably mounted on the fixed frame (824).

10. A multi-unit grading device for crayfish processing according to claim 9, characterized in that: A stopper (817) is fixedly provided on the upper surface of the rotating frame (813); the pressing frame assembly (83) comprises a pressing frame (831) in sliding contact with the upper surface of the rotating frame (813); a pull rod (832) fixedly connected to the pressing frame (831) at the top end; a bottom frame (833) fixedly connected to the fixing frame (824) at the bottom end; and a spring (834) respectively fixed to the bottom frame (833) and the pull rod (832) at both ends; the outer side of the pull rod (832) is slidably connected to the bottom frame (833); and the output assembly (84) comprises a gear (841) coaxially fixed to the bottom end of the rotating rod (823); a transmission belt (842) meshed with the outer side of the gear (841); and a motor (843) fixed to the gear (841) at the output end.

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