An automated production line for earthworms

Abstract

The present application belongs to the technical field of earthworm breeding, and particularly relates to an automatic earthworm breeding production line, which comprises a substrate loading unit, a breeding unit, a discharging and screening unit and a material transferring unit. The breeding unit comprises a breeding bin and a breeding tray. The breeding tray has the freedom of transferring between the discharging end of the substrate loading unit, the breeding bin and the feeding end of the discharging and screening unit by means of the material transferring unit. The material transferring unit comprises a moving mechanism and a telescopic arm. The telescopic arm has the freedom of moving in the horizontal and vertical directions by means of the moving mechanism. The material transferring unit further comprises a discharging mechanism. The breeding tray taken out by the telescopic arm is tilted by means of the discharging mechanism and discharged towards the discharging and screening unit. The present application takes out and moves the breeding tray by means of the telescopic arm and the moving mechanism, and then tilts the breeding tray by means of the discharging mechanism and completes the discharging. The whole material transferring unit has a simple structure, low equipment cost and low maintenance cost, and is suitable for small and medium-sized breeding farms to breed earthworms.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of earthworm breeding, and particularly relates to an automatic earthworm breeding production line. BACKGROUND

[0002] At present, in order to improve the production efficiency of earthworm breeding and reduce the labor burden, some breeding farms use automatic breeding production lines. The production line generally is that the staff pours earthworm eggs into the organic substrate breeding tray, and the breeding tray is put into the incubation breeding in the incubation workshop by the material transfer unit. When the earthworms reach the mature stage, the breeding tray is taken out by the material transfer unit, and the earthworms and organic substrate in the breeding tray are poured into the discharging and screening unit for screening and processing, respectively.

[0003] However, the current material transfer unit is generally composed of a group of mechanical arms with arbitrary three-dimensional position and orientation. The mechanical arm controls the extraction and turning of the breeding tray. However, the mechanical arm has high cost and complex structure, and needs to be regularly maintained and repaired, resulting in high repair costs, which is not suitable for small profit earthworm breeding. SUMMARY

[0004] In order to solve the problems existing in the prior art, the present application provides an automatic earthworm breeding production line. The breeding tray is taken out and moved by the telescopic arm and the moving mechanism, and then the breeding tray is formed to be inclined by the unloading mechanism to complete unloading. The whole material transfer unit has simple structure, low equipment cost and low maintenance cost, and is suitable for small and medium-sized breeding farms for earthworm breeding.

[0005] The specific technical scheme adopted by the present application is:

[0006] An automatic earthworm breeding production line, comprising a substrate loading unit, a breeding unit, a discharging and screening unit and a material transfer unit. The breeding unit comprises a breeding bin and a breeding tray. The breeding tray has the freedom to transfer between the discharging end of the substrate loading unit, the breeding bin and the feeding end of the discharging and screening unit by means of the material transfer unit. The material transfer unit comprises a moving mechanism and symmetrically arranged telescopic arms. The telescopic arms have the freedom to move in the horizontal and vertical directions by means of the moving mechanism. The material transfer unit further comprises an unloading mechanism. The breeding tray taken out by the telescopic arm is formed to be inclined by the unloading mechanism and unloaded towards the discharging and screening unit.

[0007] The unloading mechanism comprises a material rotating conveyor, a supporting rope and a winch, the rotation axis of the material rotating conveyor is perpendicular to the platform of the telescopic arm, the far end of the breeding disc is symmetrically provided with a first limiting rod, the near end of the breeding disc is symmetrically provided with a second limiting rod, the breeding disc is in transmission connection with the material rotating conveyor through the first limiting rod and the second limiting rod, the breeding disc has the freedom of sliding into and out of the bracket of the breeding bin through the rotation of the material rotating conveyor, the first limiting rod is hinged to the telescopic arm and the material rotating conveyor, the second limiting rod is separated from the material rotating conveyor and is in lifting through the supporting rope, the second limiting rod is in swinging around the first limiting rod through the tension and relaxation of the supporting rope, the breeding disc is in swinging through the cooperation of the second limiting rod and the supporting rope and is in dumping towards the discharging and screening unit.

[0008] The surface of the material rotating conveyor is provided with spaced-apart prongs, the first limiting rod and the second limiting rod are in inlay cooperation through the rotation of the material rotating conveyor, the prongs and the surface of the telescopic arm form a U-shaped groove structure.

[0009] The breeding disc is in a groove structure, the discharging end of the breeding disc is in an inclined arrangement and forms an angle of 25-30° with the horizontal plane.

[0010] The moving mechanism comprises a moving frame and a lifting seat, the moving frame is provided with lifting rails, the lifting seat has the freedom of lifting relative to the moving frame through the lifting rails, the moving frame is further provided with a driving lead screw, and the driving lead screw is in threaded transmission connection with a threaded sleeve on the lifting seat.

[0011] The material rotating unit further comprises horizontal rails arranged on the ground and walking wheels driven by a motor, and the moving frame has the freedom of moving along the horizontal rails through the walking wheels.

[0012] The lifting seat is fixed with a horizontal telescopic cylinder, the telescopic arm is in sliding connection with the lifting seat, and the telescopic arm has the freedom of translation towards the opening direction of the breeding bin through the horizontal telescopic cylinder.

[0013] The substrate loading unit comprises a pulverizer and a loading conveyor, the organic substrate falls into the input end of the loading conveyor after being pulverized by the pulverizer, and the breeding disc is filled with the pulverized organic substrate by moving to the output end of the loading conveyor through the material rotating unit.

[0014] The discharging and screening unit comprises a screening groove and a lamp group suspended on the top of the screening groove, the screening groove is provided with screening holes for earthworms to pass through, and the earthworms and substrate fertilizers in the screening groove are screened through the screening holes.

[0015] An unloading method of an automatic earthworm breeding production line, comprising the following steps:

[0016] S1, the hatch of the breeding bin is opened, and the telescopic arm is moved to the front of the breeding tray containing mature earthworms by the moving mechanism;

[0017] S2, the telescopic arm is extended to the point where the second limiting rod of the breeding tray is touched by the two groups of prongs, the material conveying belt is started and the telescopic arm is continuously pushed out, until the second limiting rod is clamped by the two groups of prongs, and the telescopic arm is stopped.

[0018] S3, continue to run the material conveying belt, and when the first limiting rod is also clamped by the two groups of prongs, the telescopic arm is retracted, and the material conveying belt is continuously run until the second limiting rod is separated from the material conveying belt and is lifted by the supporting rope, and at this time the first limiting rod is clamped by the two groups of prongs.

[0019] S4, continue to run the material conveying belt and start the winch to extend the supporting rope, one side of the second limiting rod of the breeding tray is moved towards the input end of the discharge screening unit by the suspension of the supporting rope and is inclined downward with the first limiting rod as the hinge point, and the organic matter is poured into the discharge screening unit, and the unloading is completed.

[0020] S5, after the unloading is completed, the material conveying belt and the winch are rotated in the opposite direction, the first limiting rod and the second limiting rod of the breeding tray return to the state of being clamped by the prongs, at this time the breeding tray is carried on the telescopic arm, and the winch is stopped.

[0021] S6, the telescopic arm is extended to the breeding bin, and the material conveying belt is continuously rotated in the opposite direction, and the breeding tray is placed on the cradle in the breeding bin again.

[0022] S7, the telescopic arm is retracted and moved to the front of the next group of breeding trays containing mature earthworms by the moving mechanism, and steps S2-S6 are repeated.

[0023] The beneficial effects of the present application are:

[0024] 1, the telescopic arm and the unloading mechanism are arranged in the present application, the breeding tray is taken out and moved by the telescopic arm and the moving mechanism, then the breeding tray is inclined by the unloading mechanism and the unloading is completed, the whole material conveying unit has simple structure, low equipment cost and low maintenance cost, and is suitable for small and medium-sized breeding farms for earthworm breeding.

[0025] 2. In this invention, the breeding tray is conveyed by the clamping of the transfer conveyor belt. As the breeding tray moves on the telescopic arm, the far end of the breeding tray and the first limiting rod are still clamped by the transfer conveyor belt, while the near end of the breeding tray and the second limiting rod disengage from the transfer conveyor belt and are lifted by the support rope. Since the support rope has the freedom to extend and rewind with the help of the winch, as the support rope extends, the second limiting rod of the breeding tray gradually lowers, and the entire breeding tray tilts and moves towards the discharge screening unit to unload. After unloading is completed, the support rope is rewound, and the near end of the breeding tray and the second limiting rod gradually rise and are clamped by the transfer conveyor belt again, thus resetting. The entire unloading mechanism has a simple structure, and unloading can be achieved by winding and unwinding the support rope, which greatly saves equipment costs and maintenance expenses. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the production line structure of the present invention;

[0027] Figure 2 A schematic diagram of the production line structure during unloading of the aquaculture trays;

[0028] Figure 3 A top view of the feed transfer unit when grabbing the breeding tray;

[0029] Figure 4 This is a top view of the material transfer unit during unloading.

[0030] In the attached diagram, 1. Breeding bin, 2. Breeding tray, 3. Telescopic arm, 4. Feed conveyor belt, 5. Support rope, 6. Winch, 7. First limit rod, 8. Second limit rod, 9. Paddle, 10. Moving frame, 11. Lifting seat, 12. Drive screw, 13. Horizontal guide rail, 14. Traveling wheel, 15. Horizontal telescopic cylinder, 16. Screening trough, 17. Light assembly, 18. Screening hole. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0032] Specific embodiments, such as Figures 1-4 As shown, the present invention provides an automated earthworm farming production line, including a substrate feeding unit, a farming unit, a discharge screening unit, and a transfer unit. The farming unit includes a farming bin 1 and a farming tray 2. The farming tray 2 has the freedom to move between the discharge end of the substrate feeding unit, the farming bin 1, and the inlet end of the discharge screening unit via the transfer unit. The transfer unit includes a moving mechanism and symmetrically arranged telescopic arms 3. The telescopic arms 3 have the freedom to move in the horizontal and vertical directions via the moving mechanism. The transfer unit also includes a unloading mechanism. The farming tray 2 taken out by the telescopic arms 3 is tilted and unloaded towards the discharge screening unit via the unloading mechanism.

[0033] The current material transfer unit is usually composed of a set of mechanical arms with arbitrary three-dimensional position and orientation, which controls the pumping and turning of the breeding tray 2 through the mechanical arms, but the mechanical arms are high in cost and complex in structure, and the mechanical arms need to be regularly maintained and repaired, resulting in high repair costs, which is not suitable for small profit earthworm breeding, so small and medium-sized earthworm breeding farms still use manual feeding, and cannot form an automatic production line.

[0034] Therefore, the present application is provided with a telescopic arm 3 and a discharging mechanism, which takes out and moves the breeding tray 2 through the telescopic arm 3 and the moving mechanism, and then forms an inclination and completes the discharging of the breeding tray 2 through the discharging mechanism. The whole material transfer unit is simple in structure, low in equipment cost and low in maintenance cost, and suitable for small and medium-sized breeding farms for earthworm breeding. Through the material transfer unit, small and medium-sized earthworm breeding farms can realize automatic breeding. During breeding, the breeding tray 2 is transferred to the substrate loading unit by the material transfer unit for substrate loading, and then the earthworm larvae are evenly distributed in the breeding tray 2 by the staff, and the breeding tray 2 loaded with organic substrate and earthworm larvae is put back into the breeding bin 1 for cultivation by the material transfer unit. The breeding bin 1 will monitor the internal environment in real time, adjust the temperature and humidity in the breeding bin 1, and when the earthworms mature, the earthworms and organic fertilizer in the breeding tray 2 will be poured into the discharging and screening unit for screening and packaging. The whole process only needs the staff to evenly distribute the earthworm larvae in the breeding tray 2, realizes the automation of earthworm breeding, greatly improves the production efficiency of earthworm breeding and reduces the labor burden.

[0035] The discharging mechanism includes a material transfer belt 4, a supporting rope 5 and a winch 6. The rotation axis of the material transfer belt 4 is perpendicular to the platform of the telescopic arm 3. The distal ends of the breeding tray 2 are symmetrically provided with first limiting rods 7, and the proximal ends of the breeding tray 2 are symmetrically provided with second limiting rods 8. The breeding tray 2 is connected with the material transfer belt 4 through the first limiting rods 7 and the second limiting rods 8. The breeding tray 2 has the freedom of sliding in and out of the bracket of the telescopic arm 3 and the breeding bin 1 through the rotation of the material transfer belt 4. The first limiting rods 7 are hinged to the telescopic arm 3 and the material transfer belt 4. The second limiting rods 8 are separated from the material transfer belt 4 and are lifted by the supporting rope 5. The second limiting rods 8 swing around the first limiting rods 7 through the tension and relaxation of the supporting rope 5. The breeding tray 2 swings through the cooperation of the second limiting rods 8 and the supporting rope 5 and tilts towards the discharging and screening unit.

[0036] The culture tray 2 in the application is transported by the clamping of the material transferring belt 4. With the movement of the culture tray 2 on the telescopic arm 3, the distal end of the culture tray 2 and the first limiting rod 7 are still clamped by the material transferring belt 4, the proximal end of the culture tray 2 and the second limiting rod 8 are separated from the material transferring belt 4 and are lifted by the supporting rope 5. Since the supporting rope 5 has the freedom of extension and winding by the winch 6, with the extension of the supporting rope 5, the second limiting rod 8 of the culture tray 2 is gradually lowered, the whole culture tray 2 is inclined and forms the unloading towards the material discharging and screening unit. After the unloading is completed, the supporting rope 5 is wound, the proximal end of the culture tray 2 and the second limiting rod 8 are gradually raised and clamped by the material transferring belt 4, forming the reset. The whole unloading mechanism is simple in structure, the unloading can be realized by the winding and unwinding of the supporting rope 5, which greatly saves the equipment cost and maintenance cost.

[0037] The surface of the material transferring belt 4 is provided with the spaced-apart push pieces 9, the first limiting rod 7 and the second limiting rod 8 are embedded in the interspace of the push pieces 9 by the rotation of the material transferring belt 4 to form the inlaying cooperation, the push pieces 9 and the surface of the telescopic arm 3 form the U-shaped groove structure, the push pieces 9 can push and clamp the first limiting rod 7 and the second limiting rod 8, the U-shaped groove formed by the surface of the telescopic arm 3 and the push pieces 9 can make the first limiting rod 7 hinged and have the freedom of rotation, so as to realize the inclination of the culture tray 2.

[0038] The culture tray 2 is in the groove structure, the discharging end of the culture tray 2 is inclined and forms the angle of 25-30° with the horizontal plane, the discharging end of the culture tray 2 is the end close to the second limiting rod 8. When the culture tray 2 is in the unloading state, the whole culture tray 2 is inclined, and the inclined edge of the discharging end is below the horizontal plane, so as to ensure that the substrate and earthworms in the culture tray 2 are smoothly discharged.

[0039] The moving mechanism comprises a moving frame 10 and a lifting seat 11, the moving frame 10 is provided with lifting guide rails, the lifting seat 11 has the freedom of lifting relative to the moving frame 10 by the lifting guide rails, the moving frame 10 is further provided with a driving lead screw 12, the driving lead screw 12 is in threaded transmission connection with the threaded sleeve on the lifting seat 11, the lifting seat 11 has the freedom of lifting by the driving lead screw 12, so that the telescopic arm 3 also has the freedom of lifting, and the culture tray 2 on the different height brackets in the culture bin 1 can be taken out.

[0040] The material transferring unit further comprises a horizontal guide rail 13 arranged on the ground and a walking wheel 14 driven by a motor, the moving frame 10 has the freedom of moving along the horizontal guide rail 13 by the walking wheel 14.

[0041] The lifting seat 11 is fixed with horizontal telescopic cylinders 15, the telescopic arms 3 are slidingly connected with the lifting seat 11, the telescopic arms 3 have a translational freedom degree extending to the opening direction of the breeding bin 1 by means of the horizontal telescopic cylinders 15, the horizontal telescopic cylinders 15 are provided in a group, the front ends of the two groups of telescopic arms 3 are fixedly connected by means of connecting rods, so as to ensure that the two groups of telescopic arms 3 are synchronously telescoped.

[0042] The substrate feeding unit comprises a pulverizer and a feeding conveyor belt, the organic substrate falls into the input end of the feeding conveyor belt after being pulverized by the pulverizer, the breeding disc 2 is moved to the output end of the feeding conveyor belt by means of the material transfer unit and is filled with the pulverized organic substrate, the organic substrate is mainly agricultural waste, including straw, livestock manure and the like.

[0043] The discharging and screening unit comprises a screening groove 16 and a lamp group 17 suspended on the top of the screening groove 16, the bottom of the screening groove 16 is provided with screening holes 18 for earthworms to drill through, the earthworms and organic fertilizer in the screening groove 16 are screened by means of the screening holes 18, not only the earthworms themselves have feeding and medicinal values, but also the earthworms can consume agricultural waste and produce organic fertilizer during the growth process, thereby bringing additional economic benefits, so it is necessary to separate and recycle the earthworms and the organic fertilizer, the screening groove 16 is irradiated by the strong blue light or white light of the lamp group 17 by using the negative phototaxis of the earthworms, the earthworms will drill out along the screening holes 18 and avoid the strong light, so as to realize the separation of the earthworms and the organic fertilizer.

[0044] An unloading method of an earthworm automatic breeding production line, comprising the following steps:

[0045] S1, the hatch of the breeding bin 1 is opened, and the telescopic arm 3 is moved to the front of the breeding disc 2 filled with mature earthworms by means of the moving mechanism;

[0046] S2, the telescopic arm 3 is extended to the touch of the second limiting rod 8 of the breeding disc 2 by the two groups of pushers 9, the material transfer belt 4 is started and the telescopic arm 3 is continuously pushed out, until the second limiting rod 8 is clamped by the two groups of pushers 9, and the pushing out of the telescopic arm 3 is stopped;

[0047] S3, the material transfer belt 4 is continuously operated, and when the first limiting rod 7 is also clamped by the two groups of pushers 9, the telescopic arm 3 is pulled back, the material transfer belt 4 is continuously operated until the second limiting rod 8 is separated from the material transfer belt 4 and is lifted by the supporting rope 5, and at this time the first limiting rod 7 is clamped by the two groups of pushers 9;

[0048] S4, the material transfer belt 4 is continuously operated, and the winch 6 is started to lengthen the supporting rope 5, one side of the second limiting rod 8 of the breeding disc 2 is moved towards the input end of the discharging and screening unit by means of the suspension of the supporting rope 5 and is inclined downward with the first limiting rod 7 as the hinge point, and the organic matter is poured into the discharging and screening unit, thereby completing the unloading;

[0049] S5, after the unloading is completed, the reverse direction rotation of the material conveying belt 4 and the winch 6, the first limiting rod 7 and the second limiting rod 8 of the breeding disc 2 restore to the state of being clamped by the pusher 9, at this time the breeding disc 2 is carried on the telescopic arm 3, the winch 6 is stopped;

[0050] S6, the telescopic arm 3 is stretched out to the breeding bin 1, the reverse direction rotation of the material conveying belt 4 is continued, and the breeding disc 2 is placed on the bracket in the breeding bin 1 again;

[0051] S7, the telescopic arm 3 is drawn out and moved to the front of the next group of breeding discs 2 equipped with mature earthworms by means of the moving mechanism, and steps S2-S6 are repeated.

[0052] In the application, an unloading method matched with the production line structure is also provided, since the second limiting rod 8 is still away from the input end of the screening and unloading unit after being separated from the pusher 9, it is necessary to continue to move forward with the help of the material conveying belt 4, and then the unloading can be carried out by means of the inclined supporting rope 5.

Claims

1. An automated production line for breeding earthworms, comprising a substrate loading unit, a breeding unit, a discharge screening unit and a substrate transfer unit, the breeding unit comprising a breeding bin (1) and a breeding tray (2), the breeding tray (2) having a degree of freedom for being transferred between a discharge end of the substrate loading unit, the breeding bin (1) and a feed end of the discharge screening unit, characterized in that, The material transferring unit comprises a moving mechanism and symmetrically arranged telescopic arms (3) which have the freedom of movement in horizontal and vertical directions by means of the moving mechanism, and further comprises a discharging mechanism by which the aquaculture tray (2) taken out by the telescopic arm (3) is formed to be inclined and discharged towards the discharging and screening unit, the discharging mechanism comprises a material transferring belt (4), a supporting rope (5) and a winch (6), the rotation axis direction of the material transferring belt (4) is perpendicular to the platform where the telescopic arm (3) is located, the distal end of the aquaculture tray (2) is symmetrically provided with a first limiting rod (7) on both sides, the proximal end of the aquaculture tray (2) is symmetrically provided with a second limiting rod (8) on both sides, the aquaculture tray (2) is formed to be in transmission connection with the material transferring belt (4) by means of the first limiting rod (7) and the second limiting rod (8), the aquaculture tray (2) has the freedom of sliding in and out of the bracket of the aquaculture tank (1) by means of the rotation of the material transferring belt (4), the first limiting rod (7) is hinged to the telescopic arm (3) and formed to be in articulation with the material transferring belt (4), the second limiting rod (8) is separated from the material transferring belt (4) and formed to be in lifting by means of the supporting rope (5), the second limiting rod (8) is formed to swing around the first limiting rod (7) by means of the tension and relaxation of the supporting rope (5), the aquaculture tray (2) is formed to swing by means of the cooperation of the second limiting rod (8) and the supporting rope (5) and formed to be poured towards the discharging and screening unit, the surface of the material transferring belt (4) is provided with spaced-apart push pieces (9), the first limiting rod (7) and the second limiting rod (8) are embedded in the interspace of the push pieces (9) by means of the rotation of the material transferring belt (4) to form inlaying cooperation, and the push pieces (9) and the surface of the telescopic arm (3) form a U-shaped slot structure.

2. The automated production line for breeding earthworms according to claim 1, characterized in that, The aquaculture tray (2) is in a slot structure, and the discharging end of the aquaculture tray (2) is inclined and forms an angle of 25-30° with the horizontal plane.

3. The automated worm farming production line according to claim 1, characterized in that, The moving mechanism comprises a moving frame (10) and a lifting seat (11), the moving frame (10) is provided with lifting rails, the lifting seat (11) has the freedom of lifting relative to the moving frame (10) by means of the lifting rails, and the moving frame (10) is further provided with a driving lead screw (12) which is in threaded transmission connection with a threaded sleeve on the lifting seat (11).

4. The automated worm farming production line according to claim 3, characterized in that, The material transferring unit further comprises a horizontal guide rail (13) arranged on the ground and a walking wheel (14) driven by a motor, and the moving frame (10) has the freedom of movement along the horizontal guide rail (13) by means of the walking wheel (14).

5. The automated worm farming production line according to claim 3, wherein, The lifting seat (11) is fixed with a horizontal telescopic cylinder (15), the telescopic arm (3) is in sliding connection with the lifting seat (11), and the telescopic arm (3) has the freedom of translation towards the opening direction of the aquaculture tank (1) by means of the horizontal telescopic cylinder (15).

6. The automated worm farming production line according to claim 1, characterized in that, The substrate loading unit comprises a pulverizer and a loading conveyor belt, the organic substrate is crushed by the pulverizer and then falls into the input end of the loading conveyor belt, and the aquaculture tray (2) is moved to the output end of the loading conveyor belt by means of the material transferring unit and filled with the crushed organic substrate.

7. The automated worm farming production line according to claim 1, characterized in that, The discharging and screening unit comprises a screening groove (16) and a lamp group (17) hung on the top of the screening groove (16), the bottom of the screening groove (16) is provided with a screening hole (18) for earthworms to pass through, and the earthworms and the substrate fertilizer in the screening groove (16) are screened through the screening hole (18).

8. The unloading method of the automated earthworm breeding production line according to claim 1, characterized in that, The method comprises the following steps: S1, the hatch of the breeding bin (1) is opened, and the telescopic arm (3) is moved to the front of the breeding tray (2) containing mature earthworms by means of the moving mechanism; S2, the telescopic arm (3) is extended to the point where the pusher (9) touches the second limiting rod (8) of the breeding tray (2), the material rotating conveying belt (4) is started and the telescopic arm (3) is continuously pushed out, until the second limiting rod (8) is clamped by the two groups of pushers (9), and the pushing out of the telescopic arm (3) is stopped; S3, the material rotating conveying belt (4) is continuously operated, the telescopic arm (3) is retracted when the first limiting rod (7) is also clamped by the two groups of pushers (9), and the material rotating conveying belt (4) is continuously operated until the second limiting rod (8) is separated from the material rotating conveying belt (4) and is lifted by the supporting rope (5), at this time, the first limiting rod (7) is clamped by the two groups of pushers (9); S4, the material rotating conveying belt (4) is continuously operated, and the winch (6) is started to lengthen the supporting rope (5), one side of the second limiting rod (8) of the breeding tray (2) is moved towards the input end of the discharging and screening unit by means of the suspension of the supporting rope (5) and is inclined downward with the first limiting rod (7) as the hinge point, and the organic matter is poured into the discharging and screening unit, and the discharging is completed; S5, after the discharging is completed, the material rotating conveying belt (4) and the winch (6) are reversely rotated, the first limiting rod (7) and the second limiting rod (8) of the breeding tray (2) return to the state of being clamped by the pusher (9), at this time, the breeding tray (2) is carried on the telescopic arm (3), and the operation of the winch (6) is stopped; S6, the telescopic arm (3) is extended to the breeding bin (1), and the material rotating conveying belt (4) is continuously reversely rotated, and the breeding tray (2) is placed on the bracket in the breeding bin (1) again; S7, the telescopic arm (3) is retracted and moved to the front of the next breeding tray (2) containing mature earthworms by means of the moving mechanism, and the steps S2-S6 are repeated.

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