A grading and screening device for pupae of the moth of the species Antheraea pernyi

Abstract

The utility model relates to silkworm pupa sorting technical field discloses a tussah pupa grading screening device, include: operation platform, bottom is provided with liftable support leg, one end is provided with dump storage area, the other end is provided with screening area, the screening area bottom is divided into stationary storage area, small -size collection area, medium -sized collection area and large -size collection area in proper order, the screening area bottom is provided with detachable collection subassembly, and the device forms dynamic screening interface through the inclined table top design and movable gap adjusting roller, and the gap adjusting roller continues to rotate and drives silkworm pupa even to turn over, and the operator can carry out multi -angle observation to silkworm pupa on the side, effectively avoid the visual blind area in traditional static screening, and the design of detachable side wing slide way board can throw the unqualified product to the fixed collection mouth at will, reduces invalid moving time, and significantly improves artificial picking efficiency and accuracy.

Description

Technical Field

[0001] This utility model relates to the field of silkworm pupa sorting technology, specifically a grading and screening device for tussah silkworm pupae. Background Technology

[0002] Silkworm pupae, the pupal stage of silkworms such as the domesticated silkworm or tussah silkworm after spinning their cocoons, are an important byproduct of the silk industry and a high-value food and feed resource. They are spindle-shaped or oval, covered with a flexible but easily damaged chitinous exoskeleton. Silkworm pupae have a wide range of uses, including selecting superior silkworm breeds in cocoon rearing, grading and screening raw cocoons in silk production, and pre-processing as a high-protein food ingredient. Regardless of the application, strict sorting based on the pupae's integrity (e.g., cuts, deformities, diseases) and size (usually categorized as small, medium, and large) is essential. The size of the pupae is not only an important external indicator of their developmental maturity and nutrient accumulation but also directly affects their commercial value and intended use. Furthermore, screening out abnormal individuals is crucial for controlling disease transmission, ensuring silkworm breed quality, and improving the quality stability of processed products.

[0003] For a long time, the screening of silkworm pupae has relied heavily on manual operation. In the traditional process, workers need to spread a large number of silkworm pupae harvested or peeled from cocoons on the sorting table and complete the screening in two main stages: first, manual visual inspection and removal of defective pupae, such as wounded pupae, deformed pupae, and diseased pupae; second, the healthy pupae are roughly classified according to size.

[0004] However, this manual sorting method has significant core difficulties and major drawbacks, resulting in low efficiency and difficulty in guaranteeing grading accuracy: First, the grading accuracy is insufficient. Due to the lack of precise quantitative standards, workers mainly rely on visual estimation to judge the size of silkworm pupae. Time-consuming operation leads to visual fatigue, and the differences in experience among different workers make the final grading results highly subjective and inconsistent. This results in the common phenomenon of large, medium, and small silkworm pupae being mixed together, which seriously affects the grade and value of the final product. Second, the detection of abnormalities is unstable. During manual inspection, diseased pupae, pupae with knife wounds, or hidden deformed pupae are easily missed, especially in the case of large batches. Manual visual screening is not comprehensive, increasing the risk of missing defective pupae. Finally, the high labor intensity and risk of injury are also issues that cannot be ignored. Repeated visual identification, manual picking, and grasping and sorting actions are monotonous and heavy, which can easily lead to worker fatigue, affecting the screening quality and efficiency. At the same time, frequent manual grasping and sorting also increases the risk of silkworm pupae being damaged by external forces.

[0005] In view of the above problems, there is an urgent need for specialized technical equipment in the processing industries of silkworm cocoons, silk reeling by-products, and edible silkworm pupae to automate, accurately, and efficiently screen silkworm pupae, especially to automatically grade them by size and reliably separate defective individuals. Traditional manual methods cannot meet the higher requirements of large-scale modern production for screening efficiency, consistency of precision, and resource utilization, severely restricting the development of the industry and the improvement of product quality. Therefore, developing a highly efficient and accurate automatic silkworm pupae screening device has become a key issue that urgently needs to be addressed. Utility Model Content

[0006] The purpose of this invention is to provide a grading and screening device for tussah silkworm pupae to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a grading and screening device for tussah silkworm pupae, comprising: The operating platform has adjustable support legs at the bottom, a tilting and stacking area at one end, and a screening area at the other end. The bottom of the screening area is divided into a static stacking area, a small collection area, a medium collection area, and a large collection area. The bottom of the screening area is equipped with detachable collection components, which are located in the small, medium, and large collection areas at the bottom of the screening area. A vibrator is fixedly installed at the bottom. A movable screening component, which is movably positioned within the screening area, includes an adjustable gap adjustment roller; The detachable side wing slide plate is detachably installed on both sides of the operating table by fastening bolts, and a collection port is provided through the end. Side wing collection components are symmetrically arranged on both sides of the operating table, and the side wing collection components are located directly below the collection port.

[0008] According to the above technical solution, the liftable support leg includes: The top lifting legs are respectively movably installed at the four corners of the lower end face of the operating table; The bottom support leg is movably sleeved onto the lower end of the top lifting leg, and a support plate is fixedly installed at the bottom. A top connecting plate is symmetrically arranged at the lower end of the operating table, axially vertically arranged on the side wall of the detachable side wing slide plate, and fixedly connected to the side wall of the top lifting leg at both ends. The bottom connecting plate is symmetrically arranged at the lower end of the operating table, axially vertically arranged on the side wall of the detachable side wing slide plate, and fixedly connected to the side wall of the bottom support leg at both ends. A multi-stage electric telescopic rod is fixed to the upper part of the bottom connecting plate and the telescopic end is connected to the bottom of the top connecting plate.

[0009] According to the above technical solution, the detachable collection component includes: Fixed guide rails are symmetrically fixed to the lower end of the operating table and located on both sides of the screening area, with guide grooves provided on the adjacent side; A central collecting cylinder has circular guide blocks symmetrically fixedly installed on its side walls. The circular guide blocks are movably installed in the guide grooves. A snap-fit ​​assembly is provided on the inner side wall of the guide grooves to snap and fix the position of the central collecting cylinder.

[0010] According to the above technical solution, the snap-fit ​​component includes: A compression spring is fixed inside the telescopic cavity on the side wall of the guide groove; The movable block is movably installed in the telescopic cavity via an angle limiting rod, and its side wall abuts against the compression spring; The snap-fit ​​block has one end fixedly connected to the side wall of the movable block, and the other end extends into the guide groove and is provided with a spherical head. The side wall of the circular guide block is provided with a spherical groove, and the spherical head is movably installed in the corresponding spherical groove.

[0011] According to the above technical solution, the mobile screening component includes: The movable slider is symmetrically and movably installed in the movable groove on the side wall of the screening area; A gap adjusting roller is symmetrically arranged between the movable sliders, and a gap adjusting block is movably installed at its end. The gap adjusting block on one side is symmetrically and movably installed in the adjustment area inside the movable slider through a guide rod, and the gap adjusting block at the other end is threadedly installed in the adjustment area inside the movable slider through a bidirectional threaded rod. The threads at both ends of the bidirectional threaded rod are in opposite directions. The first micro servo motor is fixedly installed in the adjustment area, and its output end is fixedly connected to one end of the bidirectional threaded rod. The first limit block is fixedly installed in the adjustment area at one end near the first micro servo motor; The third micro servo motor is embedded in the gap adjustment block at one end, and its output end is fixedly connected to the gap adjustment roller.

[0012] According to the above technical solution, the mobile component includes: The limiting slider is symmetrically fixed to the upper and lower ends of the movable slider and movably installed in the limiting groove at the upper and lower ends of the movable slide groove; The second micro servo motor is fixedly installed in the movable slide, and a one-way threaded rod is fixedly installed at the output end. The one-way threaded rod is threadedly connected to the movable slider. The second limiting block is fixedly installed in the movable slide groove at one end near the second micro servo motor.

[0013] According to the above technical solution, the wing-mounted collection assembly includes: The side-wing collecting cylinder has angle plug-in blocks fixedly installed on its side wall. The angle plug-in blocks are inserted into the angle plug-in slots on the outside of the fixed guide rail. The angle plug-in blocks are composed of a central circular plate and circumferentially distributed angle blocks.

[0014] Compared with the prior art, the beneficial effects achieved by this utility model are: (1) Improve the efficiency and accuracy of manual screening: The device forms a dynamic screening interface through the inclined table design and movable gap adjustment roller. The gap adjustment roller rotates continuously to drive the tussah silkworm pupae to turn evenly. The operator can observe the tussah silkworm pupae from multiple angles from the side, effectively avoiding the visual blind spots in traditional static screening. The design of the detachable side wing slide plate can throw unqualified products to the fixed collection port at will, reducing the ineffective movement time and significantly improving the efficiency and accuracy of manual picking.

[0015] (2) Automated grading and continuous operation: The horizontal reciprocating motion of the moving screening component and the real-time spacing control of the gap adjustment roller form a dynamic sorting channel. During the movement, the silkworm pupae pass through the small, medium and large collection areas in sequence. The gap width automatically matches the target specifications according to the area, accurately separating qualified products of different sizes. The sorting process is seamlessly connected. At the same time, by returning to reset, continuous cycle of batch processing can be realized, avoiding the time loss caused by frequent start and stop in the traditional sorting process.

[0016] (3) Enhance equipment applicability and maintenance convenience: The modular structure design enables the device to have high scalability and scene adaptability. The detachable collection components facilitate quick cleaning of residues and prevent the accumulation of pupa shell debris from affecting sorting accuracy. The snap-fit ​​fixing structure and guide rail design take into account both installation stability and disassembly convenience, and can easily meet the equipment cleaning and maintenance needs of different production batches. The multi-variable adjustment functions such as vibration parameters, moving speed, and gap adjustment roller speed support flexible adaptation to diverse screening requirements such as irregularly shaped tussah silkworm pupae and special varieties.

[0017] (4) Reduce labor intensity and operation complexity: The device combines functional modules such as height adjustment, vibration assistance, and automatic reset. The support legs can be raised and lowered and the tilt angle can be adjusted to adapt to different operating posture requirements, avoiding fatigue caused by long-term bending over. Automated mobile sorting replaces manual handling and repetitive sorting actions, significantly reducing physical consumption. Modular collection components simplify the loading and unloading process. Operators only need to focus on the core screening process, achieving efficient operation with low skill threshold. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1This is a first perspective view of the present invention; Figure 2 This is a second perspective view of the present invention; Figure 3 This is a third perspective view of the present invention; Figure 4 This is a fourth perspective view of the present invention; Figure 5 This is a first partial perspective view of the present invention; Figure 6 This is a second partial perspective view of the present invention; Figure 7 This is a third partial perspective view of the present invention; Figure 8 This is a fourth partial perspective view of the present invention; Figure 9 This is a utility model Figure 7 Enlarged view of point A in the middle; In the diagram: 1-Operating platform, 11-Dumping and stacking area, 12-Screening area, 13-Moving chute, 14-Limiting chute, 2-Liftable support leg, 21-Top lifting leg, 22-Bottom support leg, 23-Support plate, 24-Top connecting plate, 25-Bottom connecting plate, 26-Multi-stage electric telescopic rod, 3-Detachable collection assembly, 31-Fixed guide rail, 311-Guide groove, 312-Telescopic cavity, 32-Central collection cylinder, 33-Circular guide block, 331-Spherical groove, 34-Snap-fit ​​assembly, 341-Compression spring, 342-Moving block, 343-Snap-fit ​​block, 344-Spherical groove 4-Head, 5-Vibrator, 6-Moving screening assembly, 7-Moving slider, 8-Adjustment area, 9-Gap adjusting roller, 10-Gap adjusting block, 11-Guide rod, 12-Bidirectional threaded rod, 13-First micro servo motor, 14-First limit stop, 15-Moving assembly, 16-Limit slider, 17-Second micro servo motor, 18-One-way threaded rod, 19-Second limit stop, 10-Side wing collecting assembly, 11-Side wing collecting cylinder, 12-Angle plug-in block, 13-Central circular plate, 14-Angle block, 15-Removable side wing slide plate, 16-Fasting bolt, 17-Collection port. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-9 This utility model provides a technical solution: a grading and screening device for oak silkworm pupae, comprising: The operating platform 1 has a liftable support leg 2 at the bottom, a tilting and stacking area 11 at one end, and a screening area 12 at the other end. The bottom of the screening area 12 is divided into a static stacking area, a small collection area, a medium collection area, and a large collection area. The bottom of the screening area 12 is equipped with a detachable collection component 3, which is located in the small collection area, medium collection area, and large collection area at the bottom of the screening area 12. A vibrator 4 is fixedly installed at the bottom. The movable screening component 5 is movably positioned within the screening area 12 via the movable component 6, and includes an adjustable gap adjustment roller 52; The detachable side wing slide plate 8 is detachably installed on both sides of the operating table 1 by fastening bolts 81, and a collection port 82 is provided through the end. Side wing collection components 7 are symmetrically arranged on both sides of the operating table 1, and the side wing collection components 7 are located directly below the collection port 82. Specifically, the liftable support leg 2 includes: Top lifting legs 21 are movably installed at the four corners of the lower end face of the operating table 1; The bottom support leg 22 is movably sleeved on the lower end of the top lifting leg 21, and a support plate 23 is fixedly installed at the bottom. The top connecting plate 24 is symmetrically arranged at the lower end of the operating table 1 and is axially vertically arranged on the side wall of the detachable side wing slide plate 8. Both ends are fixedly connected to the side wall of the top lifting leg 21. The bottom connecting plate 25 is symmetrically arranged at the lower end of the operating table 1, and is axially vertically arranged on the side wall of the detachable side wing slide plate 8. Both ends are fixedly connected to the side wall of the bottom support leg 22. A multi-stage electric telescopic rod 26 is fixed to the upper end of the bottom connecting plate 25 and its telescopic end is connected to the bottom of the top connecting plate 24; Specifically, the detachable collection assembly 3 includes: Fixed guide rails 31 are symmetrically fixed to the lower end of the operating table 1 and located on both sides of the screening area 12, with guide grooves 311 provided on the adjacent side; The central collection cylinder 32 has circular guide blocks 33 symmetrically fixedly installed on its side walls. The circular guide blocks 33 are movably installed in the guide groove 311. The inner side wall of the guide groove 311 is provided with a snap-fit ​​component 34, which snaps and fixes the position of the central collection cylinder 32. Specifically, the snap-fit ​​component 34 includes: Compression spring 341 is fixed in telescopic cavity 312 on the side wall of guide groove 311; The movable block 342 is movably installed in the telescopic cavity 312 via the angle limiting rod 345, and its side wall abuts against the compression spring 341; The snap-fit ​​block 343 has one end fixedly connected to the side wall of the movable block 342, and the other end extends into the guide groove 311 and is provided with a spherical head 344. The side wall of the circular guide block 33 is provided with a spherical groove 331, and the spherical head 344 is movably installed in the corresponding spherical groove 331. Specifically, the mobile filtering component 5 includes: The movable slider 51 is symmetrically and movably installed in the movable groove 13 on the side wall of the screening area 12; The gap adjusting roller 52 is symmetrically arranged between the movable sliders 51, and a gap adjusting block 53 is movably installed at its end. The gap adjusting block 53 on one side is symmetrically and movably installed in the adjustment area 511 in the movable slider 51 through the guide rod 54, and the gap adjusting block 53 at the other end is threaded in the adjustment area 511 in the movable slider 51 through the bidirectional threaded rod 55. The threads at both ends of the bidirectional threaded rod 55 are in opposite directions. The first micro servo motor 56 is fixedly installed in the adjustment area 511, and its output end is fixedly connected to one end of the bidirectional threaded rod 55. The first limiting block 57 is fixedly installed in the adjustment area 511 at one end near the first micro servo motor 56. The third micro servo motor 58 is embedded in the gap adjustment block 53 at one end and its output end is fixedly connected to the gap adjustment roller 52; Specifically, the moving component 6 includes: The limiting slider 61 is symmetrically fixed at the upper and lower ends of the movable slider 51 and movably installed in the limiting slide groove 14 at the upper and lower ends of the movable slide groove 13. The second micro servo motor 62 is fixedly installed in the movable slide 13, and a one-way threaded rod 63 is fixedly installed at the output end. The one-way threaded rod 63 is threadedly connected to the movable slider 51. The second limiting block 64 is fixedly installed in the movable slide 13 at one end near the second micro servo motor 62; Specifically, the wing collection assembly 7 includes: The side wing collecting cylinder 71 has an angle insertion block 72 fixedly installed on its side wall. The angle insertion block 72 is inserted into the angle insertion groove 313 on the outside of the fixed guide rail 31. The angle insertion block 72 is composed of a central circular plate 721 and circumferentially distributed angle blocks 722.

[0021] The specific work process is as follows: S1. Preparation and Initial Setup: S11. Adjust the operating platform to a suitable working height and the required tilt angle (the dumping and stacking area is higher than the end of the screening area) according to the operator's height using the liftable support legs.

[0022] S12. Install the three central collection cylinders (small, medium, and large) along the bottom guide rail into their corresponding collection areas, and ensure that they are locked in place.

[0023] S13. Install the detachable side slide plates on both sides to the edge of the operating table, and hang the side collection tube directly below the corresponding collection port.

[0024] S14. Start the third micro servo motor on the moving screening component to make the gap adjustment roller start to rotate slowly.

[0025] S15. Position the moving screening component at the starting position of the screening area (i.e., directly above the static stacking area) and set the gap adjustment roller spacing to the minimum (only able to carry tussah silkworm pupae).

[0026] S2. Manual Assisted Screening and Loading: S21. Workers pile the silkworm pupae to be screened in the dumping and stacking area at the high end of the operating table.

[0027] S22. Workers take an appropriate amount of silkworm pupae from the stacking area and place them on the gap adjustment roller located above the static stacking area (at this time the roller gap is the smallest).

[0028] S23. With the assistance of the gap adjusting roller rotating slowly, the tussah silkworm pupae are constantly turned over. The workers carefully inspect the tussah silkworm pupae on the roller surface and manually pick out and remove all observable defective products such as tussah silkworm pupae with knife wounds, deformed pupae, and diseased pupae.

[0029] S24. Throw these defective products onto the detachable side slide plates on both sides of the control panel. They will slide down the slide, pass through the collection port, and finally fall into the side collection tube below for collection.

[0030] S3. Automated movement and sorting by specifications: S31. Start the moving component and drive the moving screening component to carry the remaining qualified tussah silkworm pupae and begin to move horizontally at a constant speed from the static stacking area (high position) to the large collection area (low position), while the gap adjustment roller rotates continuously.

[0031] S32. When the entire moving filter component moves into and covers the small collection area below: S321, The automatic gap adjustment mechanism of the gap adjustment rollers is in operation, precisely increasing the gap between the two gap adjustment rollers to the set value through which small tussah silkworm pupae can pass.

[0032] S322. Healthy, small-sized tussah silkworm pupae begin to fall continuously through the widened gap under the influence of the rotation of the gap adjusting roller and gravity.

[0033] S323. With the slight assistance of the bottom vibrator, all the falling tussah silkworm pupae fall into the central collection cylinder corresponding to the small collection area below.

[0034] S324. During the movement, workers still need to pay attention to the silkworm pupae remaining on the roller surface. Any diseased or inferior pupae that have escaped the net can be picked out and moved to the side slide at any time.

[0035] S33. When the entire moving filter component moves into and covers the medium-sized collection area below: S331, the gap adjustment roller spacing is automatically adjusted again to increase to a medium value that allows silkworm pupae to pass through.

[0036] S332. Medium-sized healthy tussah silkworm pupae begin to fall through the gap and are all collected by the central collection tube in the medium-sized collection area below.

[0037] S34. When the entire moving filter component moves into and covers the large collection area below: S341, Adjust the gap between the gap adjusting rollers to the maximum set value.

[0038] S342. The remaining large-sized healthy tussah silkworm pupae fall through the wide gap and are collected by the central collection tube corresponding to the large collection area.

[0039] S343. Throughout the entire moving screening process, the rotating gap adjustment roller continuously tumbles the silkworm pupae, and the vibrator prevents the silkworm pupae from clogging the collection port.

[0040] S4, Return and Loop: S41. The mobile screening component completes the screening task in the large collection area and reaches the preset endpoint position. The mobile mechanism then drives the mobile screening component to quickly return to the starting position of the screening area (above the static stacking area).

[0041] S42. During the return process, the gap adjustment rollers automatically and synchronously adjust back to the initial minimum value to prepare for receiving the next batch of tussah silkworm pupae.

[0042] S43. Workers can repeat step 2, place a new batch of tussah silkworm pupae on the gap adjustment roller and complete the initial manual screening, and start the next automated mobile sorting cycle.

[0043] S5. End and Cleanup: S51. After the batch screening is completed, turn off the gap adjustment roller motor and the moving mechanism.

[0044] S52. Once no more silkworm pupae are falling in all areas, the bottom vibrator can be turned off. S53. Remove the filled central and side collection cylinders from their respective locking structures, and take out the selected silkworm pupae of different specifications and the unqualified products for processing.

[0045] It is important to note that all key parameters in this device, such as the tilt of the operating table, the rotation speed of the gap adjustment roller, the moving speed, and the rhythm of the gap change, can be flexibly adjusted according to actual production needs to adapt to the screening requirements of different batches of silkworm pupae. All collection containers are designed to be detachable, making it easy to quickly remove, empty, and replace them after they are full, ensuring smooth continuous operation. The entire system integrates the advantages of mechanical adjustment, stable conveying, and manual intervention, achieving efficient, accurate, and user-friendly silkworm pupae grading and screening operations.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0047] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A grading and screening device for tussah silkworm pupae, characterized in that, include: The operating platform (1) is equipped with liftable support legs (2) at the bottom, with a tilting and stacking area (11) at one end and a screening area (12) at the other end. The bottom of the screening area (12) is divided into a static stacking area, a small collection area, a medium collection area and a large collection area. The bottom of the screening area (12) is equipped with a detachable collection component (3). The detachable collection component (3) is located in the small collection area, the medium collection area and the large collection area at the bottom of the screening area (12). A vibrator (4) is fixedly installed at the bottom. The movable screening component (5) is movably positioned within the screening area (12) via the movable component (6), and includes an adjustable gap adjustment roller (52). The detachable side wing slide plate (8) is detachably installed on both sides of the operating table (1) by fastening bolts (81), and a collection port (82) is provided through the end. Side wing collection components (7) are symmetrically arranged on both sides of the operating table (1), and the side wing collection components (7) are located directly below the collection port (82).

2. The grading and screening device for tussah silkworm pupae according to claim 1, characterized in that: The liftable support leg (2) includes: The top lifting legs (21) are respectively movably installed at the four corners of the lower end face of the operating table (1); The bottom support leg (22) is movably sleeved on the lower end of the top lifting leg (21), and a support plate (23) is fixedly installed at the bottom. The top connecting plate (24) is symmetrically arranged at the lower end of the operating table (1), and is axially vertically arranged on the side wall of the detachable side wing slide plate (8), with both ends fixedly connected to the side wall of the top lifting leg (21). The bottom connecting plate (25) is symmetrically arranged at the lower end of the operating table (1), and is axially vertically arranged on the side wall of the detachable side wing slide plate (8), with both ends fixedly connected to the side wall of the bottom support leg (22). A multi-stage electric telescopic rod (26) is fixed to the upper end of the bottom connecting plate (25) and its telescopic end is connected to the bottom of the top connecting plate (24).

3. The sieve silkworm pupa grading and screening device according to claim 1, characterized in that: The detachable collection component (3) includes: Fixed guide rails (31) are symmetrically fixed at the lower end of the operating table (1) and located on both sides of the screening area (12), with guide grooves (311) provided on the adjacent side. The central collecting cylinder (32) has circular guide blocks (33) symmetrically fixedly installed on its side walls. The circular guide blocks (33) are movably installed in the guide groove (311). The inner side wall of the guide groove (311) is provided with a snap-fit ​​assembly (34), which snaps and fixes the position of the central collecting cylinder (32).

4. The sieve silkworm pupa grading and screening device according to claim 3, characterized in that: The snap-fit ​​assembly (34) includes: A compression spring (341) is fixed in the telescopic cavity (312) on the side wall of the guide groove (311); The movable block (342) is movably installed in the telescopic cavity (312) by means of the angle limiting rod (345), and its side wall abuts against the compression spring (341); The snap-fit ​​block (343) has one end fixedly connected to the side wall of the movable block (342), and the other end extends into the guide groove (311) and is provided with a spherical head (344). The side wall of the circular guide block (33) is provided with a spherical groove (331), and the spherical head (344) is movably installed in the corresponding spherical groove (331).

5. The grading and screening device for tussah silkworm pupae according to claim 1, characterized in that: The mobile filtering component (5) includes: The movable slider (51) is symmetrically and movably installed in the movable groove (13) on the side wall of the screening area (12); The gap adjusting roller (52) is symmetrically arranged between the movable sliders (51), and a gap adjusting block (53) is movably installed at its end. The gap adjusting block (53) on one side is symmetrically and movably installed in the adjustment area (511) of the movable slider (51) through the guide rod (54), and the gap adjusting block (53) at the other end is threaded in the adjustment area (511) of the movable slider (51) through the bidirectional threaded rod (55). The threads at both ends of the bidirectional threaded rod (55) are in opposite directions. The first micro servo motor (56) is fixedly installed in the adjustment area (511), and its output end is fixedly connected to one end of the bidirectional threaded rod (55); The first limiting block (57) is fixedly installed in the adjustment area (511) at one end near the first micro servo motor (56); The third micro servo motor (58) is embedded in the gap adjustment block (53) at one end and its output end is fixedly connected to the gap adjustment roller (52).

6. The grading and screening device for tussah silkworm pupae according to claim 5, characterized in that: The moving component (6) includes: The limiting slider (61) is symmetrically fixed at the upper and lower ends of the movable slider (51) and movably installed in the limiting groove (14) at the upper and lower ends of the movable groove (13); The second micro servo motor (62) is fixedly installed in the movable slide (13), and a one-way threaded rod (63) is fixedly installed at the output end. The one-way threaded rod (63) is threadedly connected in the movable slider (51). The second limiting block (64) is fixedly installed in the movable slide (13) at one end near the second micro servo motor (62).

7. The grading and screening device for tussah silkworm pupae according to claim 1, characterized in that: The flank collection assembly (7) includes: The side wing collecting cylinder (71) has an angle plug-in block (72) fixedly installed on its side wall. The angle plug-in block (72) is inserted into the angle plug-in groove (313) on the outside of the fixed guide rail (31). The angle plug-in block (72) is composed of a central circular plate (721) and circumferentially distributed angle blocks (722).

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