Screening equipment used after core and skin separation in branch recycling process

Abstract

The invention relates to the technical field of branch recycling, in particular to screening equipment used after core and skin separation in the branch recycling process, which comprises a support frame, fixing rods are mounted at two ends of the top of the support frame, a lifting plate is movably mounted above the top of the support frame, and a rotating rod is movably mounted at the bottom of the lifting plate. A first auxiliary mechanism is arranged at the bottom of the rotating rod, and a sieve plate is movably installed between the two fixing rods. According to the device, a movable plate and a through rod are arranged, when screening holes are blocked, the movable plate moves upwards to a preset position, a through plate moves upwards through sliding of a first electric sliding block in a first sliding groove, the through rod extends upwards through the through hole and penetrates through the screening holes, the top of the through rod extends to the position above the top of the screening holes, and the screening holes are blocked; through the operation mode, the sieve holes can be dredged, the function operation stability and the use convenience of the device are improved, and the labor intensity of workers is relieved through the full-automatic production mode.

Description

Technical Field

[0001] The invention relates to the technical field of branch recovery, and in particular to a screening device used for separating the core and skin in a branch recovery process. Background Art

[0002] As a biomass resource, branches are rich in lignin and cellulose. Through recycling, they can be converted into a variety of valuable products. The accumulation and incineration of discarded branches will pollute the environment. Through recycling, environmental pollution can be reduced and resources can be recycled.

[0003] At present, when branches are recycled, in order to better process the recyclables and control the quality of the processed products in the future, the core and skin of the branches will be separated first, and then they will be processed separately to improve the quality of the subsequent processed products. At present, the core and skin separation is mostly carried out by crushing, and then the crushed materials are screened. During the screening process, the crushed materials are easy to block the sieve holes, causing the device to function unsmoothly. At this time, the staff still need to manually clear the blockage, which increases the labor intensity of the staff and also affects the efficiency of the device processing. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a screening device for core bark separation in the branch recovery process.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A screening device for separating the core and skin during branch recovery comprises a support frame, wherein both ends of the top of the support frame are equipped with fixed rods, a lifting plate is movably installed above the top of the support frame, a rotating rod is movably installed at the bottom of the lifting plate, a first auxiliary mechanism is provided at the bottom of the rotating rod, a sieve plate is movably installed between the two fixed rods, a plurality of sieve holes are evenly penetrated on the sieve plate, a second baffle is provided on the top of the sieve plate, fixed plates are provided on both sides of the inner wall of the support frame, a movable plate is movably installed between the two fixed plates, a second auxiliary mechanism is provided on the movable plate, and a first baffle is installed on one side of the support frame.

[0006] Preferably, a first slot is opened through the top of the fixed plate near the first baffle, a second slot is opened inside the upper section of the other fixed plate, a plurality of air outlet holes are evenly opened through the inner wall of the second slot near the first slot, and an air inlet hole is opened through the inner wall of the second slot away from the first slot.

[0007] Preferably, both ends of the bottom of the lifting plate are connected to electric lifting rods, the mounting ends of the electric lifting rods face downward, and the mounting ends of the electric lifting rods are connected to the top of the fixed rod, and a rotating motor is embedded and installed at the bottom of the lifting plate near the rotating rod, the output end of the rotating motor faces downward, and the output end of the rotating motor is connected to the top of the rotating rod.

[0008] Preferably, the first auxiliary mechanism includes a movable plate and a brush, two movable plates are movably installed at the bottom of the rotating rod, a fourth slot is provided at the bottom of the movable plate, a brush is movably installed inside the fourth slot, third slide grooves are provided at both ends of the inner wall of the fourth slot, third electric sliders are installed at both ends of the brush, and the third electric slider is slidably installed inside the third slide groove.

[0009] Preferably, a second slide groove is provided at the bottom of the rotating rod, a second electric slider is installed on the top of the movable plate, and the second electric slider is slidably installed inside the second slide groove.

[0010] Preferably, positioning rods are provided at the four corners of the bottom of the sieve plate, and one end of the positioning rod close to the fixing rod is connected to the fixing rod, the bottom of the positioning rod is connected to the top of the support frame, a reciprocating slide groove is provided on the top of the positioning rod, a reciprocating slider is slidably installed inside the reciprocating slide groove, and the top of the reciprocating slider is connected to the bottom of the sieve plate.

[0011] Preferably, an electric telescopic rod is embedded and installed on a side of the fixed rod close to the sieve plate, the telescopic end of the electric telescopic rod faces the sieve plate, and the telescopic end of the electric telescopic rod is connected to the sieve plate.

[0012] Preferably, adapters are installed at both ends of the bottom of the movable plate, an electric support rod is provided below the adapter, the mounting end of the electric support rod is away from the movable plate, and the mounting end of the electric support rod is connected to the support frame, and the telescopic end of the electric support rod is rotatably connected to the adapter through a rotating member.

[0013] Preferably, the second auxiliary mechanism includes a through plate and a through rod, a third slot is opened inside the movable plate, a plurality of through holes are evenly penetrated through the top inner wall of the third slot, a through plate is movably installed inside the third slot, a plurality of through rods are evenly installed on the through plate, and the through rods can pass through the through holes.

[0014] Preferably, both ends of the inner wall of the third slot are provided with a first slide groove, a first electric slider is slidably installed inside the first slide groove, and the first electric slider is connected to the through plate at one side close to the through plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, by providing a movable plate and a through rod, when the sieve hole is blocked, the movable plate moves upward to a preset position, the through plate moves upward by sliding the first electric slider in the first slide groove, and the through rod extends upward through the through hole and passes through the sieve hole, so that the top of the through rod extends to above the top of the sieve hole. The sieve hole can be dredged by this operation mode, thereby increasing the functional operation stability and convenience of the device, and the fully automatic production mode also reduces the labor intensity of the staff; The electric support rod at one end of the bottom of the movable plate can be extended and retracted separately, which can make the movable plate tilt to one end, and then the branch core on the movable plate can fall to the unloading conveyor belt here. Through this operation method, the branch core can be unloaded to both ends respectively, which can effectively reduce the unloading pressure at one end and increase the convenience of using the device.

[0016] In the present invention, by providing a movable plate and a brush, when screening the branch crushing mixture, the second electric slider slides in the second slide groove to move the movable plate, and the branch crushing mixture on the screen plate can be moved, so that the distribution of the branch crushing mixture is more uniform, which is convenient for the device to separate the core and skin of the branch, and increases the convenience of use of the device; After the branch crushing mixture is screened on the top of the sieve plate for a preset time, the lighter branch skin and large pieces of skin leaves will remain on the top of the sieve plate. At this time, the two movable plates move closer to each other to clamp the residue on the top of the sieve plate. Then, the two movable plates clamping the residue move to the top of the first baffle plate. When the lifting plate descends to the preset position, the two movable plates move away from each other. At this time, the clamped residue can be lowered from the first baffle plate to complete the auxiliary unloading of the device, which increases the convenience of using the device. When the device is finished using, the third electric slider slides in the third slide groove, causing the brush to move out of the fourth slot and abut against the top of the sieve plate. Subsequently, the moving plate moves on the sieve plate to complete self-cleaning of the sieve plate, thereby increasing the convenience of using the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Axonometric view of Figure 3 It is a schematic diagram of the support frame structure of the present invention; Figure 4 is a schematic diagram of the first baffle structure of the present invention; Figure 5 It is a schematic diagram of the fixing plate structure of the present invention; Figure 6It is a schematic diagram of the air outlet and the second slot structure of the present invention; Figure 7 It is a schematic diagram of the cross-sectional structure of the movable plate of the present invention; Figure 8 It is a schematic diagram of the installation structure of the through plate and the through rod of the present invention; Fig. 9 It is a schematic diagram of the installation structure of the reciprocating slider of the present invention; Fig.10 This is a schematic diagram of the installation structure of the second electric slider of the present invention; Fig.11 It is a schematic diagram of the installation structure of the rotating electrical machine of the present invention; Fig.12 This is a schematic diagram of the brush installation structure of the present invention; Fig.13 For the present invention Fig.12 Enlarged structural diagram at A in the middle.

[0018] In the figure: 1. support frame; 2. first baffle; 3. electric support rod; 4. movable plate; 5. fixed rod; 6. electric telescopic rod; 7. sieve plate; 8. second baffle; 9. electric lifting rod; 10. lifting plate; 11. rotating rod; 12. movable plate; 13. fixed plate; 14. air inlet; 15. adapter; 16. first slot; 17. air outlet; 18. sieve hole; 19. through hole; 20. second slot; 21. third slot; 22. first slide; 23. first electric slider; 24. through plate; 25. through rod; 26. positioning rod; 27. reciprocating slide; 28. reciprocating slider; 29. ​​second slide; 30. second electric slider; 31. fourth slot; 32. rotating motor; 33. brush; 34. third slide; 35. third electric slider. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] Reference Figure 1-13, a screening device for core-bark separation in the process of branch recovery, comprising a support frame 1, fixed rods 5 are installed at both ends of the top of the support frame 1, a lifting plate 10 is movably installed above the top of the support frame 1, a rotating rod 11 is movably installed at the bottom of the lifting plate 10, a first auxiliary mechanism is provided at the bottom of the rotating rod 11, a sieve plate 7 is movably installed between the two fixed rods 5, a plurality of sieve holes 18 are evenly penetrated on the sieve plate 7, a second baffle 8 is provided on the top of the sieve plate 7, fixed plates 13 are provided on both sides of the inner wall of the support frame 1, a movable plate 4 is movably installed between the two fixed plates 13, a second auxiliary mechanism is provided on the movable plate 4, and a first baffle 2 is installed on one side of the support frame 1. The first auxiliary mechanism can stir the mixture when the device is screening the branches, improve the screening effect of the device on the branches, and can also complete the auxiliary feeding of the residue after screening, and the second auxiliary mechanism can complete the automatic dredging of the sieve holes 18 when the sieve plate 7 is blocked, which increases the convenience of use of the device.

[0021] As a technical optimization solution of the present invention, a first slot 16 is formed through the top of the fixed plate 13 near the first baffle 2, a second slot 20 is formed inside the upper section of the other fixed plate 13, a plurality of air outlets 17 are formed evenly through the inner wall of the second slot 20 near the first slot 16, and an air inlet 14 is formed through the inner wall of the second slot 20 away from the first slot 16. The air inlet 14 is connected to a fan preset outside the device through a conduit, and the wind of the fan can enter the inside of the second slot 20 through the air inlet 14, and then spray out through the air outlet 17 to blow air to the falling branch core, at which time the small pieces of branch skin and leaf fragments falling with the branch core will be blown toward the first baffle 2, and pass through the first slot 16 and fall from the first baffle 2 to the unloading conveyor belt below the first baffle 2, and the branch core will fall to the top of the movable plate 4 under the action of gravity, and the core and skin of the branch can be separated by this operation mode.

[0022] As a technical optimization solution of the present invention, both ends of the bottom of the lifting plate 10 are connected with electric lifting rods 9, the installation end of the electric lifting rod 9 faces downward, and the installation end of the electric lifting rod 9 is connected to the top of the fixed rod 5. The lifting plate 10 is embedded with a rotating motor 32 near the bottom of the rotating rod 11, the output end of the rotating motor 32 faces downward, and the output end of the rotating motor 32 is connected to the top of the rotating rod 11. The rotating motor 32 can drive the rotating rod 11 to rotate, which facilitates the conversion of the rotating rod 11 to different use positions according to different use requirements, and the electric lifting rod 9 can drive the lifting plate 10 to rise and fall according to the use requirements.

[0023] As a technical optimization solution of the present invention, the first auxiliary mechanism includes a moving plate 12 and a brush 33. Two moving plates 12 are movably installed at the bottom of the rotating rod 11. A fourth slot 31 is provided at the bottom of the moving plate 12. A brush 33 is movably installed inside the fourth slot 31. The brush 33 moves out of the fourth slot 31, and then the sieve plate 7 can be cleaned by the movement of the moving plate 12, which increases the diversity of the device's usage functions.

[0024] As a technical optimization solution of the present invention, a second slide groove 29 is provided at the bottom of the rotating rod 11, a second electric slider 30 is installed on the top of the moving plate 12, the second electric slider 30 is slidably installed inside the second slide groove 29, a brush 33 is movably provided inside the fourth slot 31, a third slide groove 34 is provided at both ends of the inner wall of the fourth slot 31, a third electric slider 35 is installed at both ends of the brush 33, and the third electric slider 35 is slidably installed inside the third slide groove 34. The brush 33 moves out of the fourth slot 31 by sliding the third electric slider 35 in the third slide groove 34, and the moving plate 12 can move on the rotating rod 11 by sliding the second electric slider 30 in the second slide groove 29.

[0025] As a technical optimization solution of the present invention, positioning rods 26 are provided at the four corners of the bottom of the sieve plate 7, and one end of the positioning rod 26 close to the fixing rod 5 is connected to the fixing rod 5, and the bottom of the positioning rod 26 is connected to the top of the support frame 1. A reciprocating slide 27 is provided at the top of the positioning rod 26, and a reciprocating slider 28 is slidably installed inside the reciprocating slide 27, and the top of the reciprocating slider 28 is connected to the bottom of the sieve plate 7. By sliding the reciprocating slider 28 in the reciprocating slide 27, the sieving action of the sieve plate 7 can be more stable, which increases the functional operation stability of the device.

[0026] As a technical optimization solution of the present invention, the fixed rod 5 is embedded with an electric telescopic rod 6 on one side close to the sieve plate 7, and the telescopic end of the electric telescopic rod 6 faces the sieve plate 7, and the telescopic end of the electric telescopic rod 6 is connected to the sieve plate 7. The electric telescopic rod 6 performs reciprocating telescopic motion, so that the sieve plate 7 performs reciprocating sieving motion, and through the sieving motion of the sieve plate 7, the branch core on the sieve plate 7 will fall through the sieve hole 18 under the action of gravity and sieving motion.

[0027] As a technical optimization solution of the present invention, adapters 15 are installed at both ends of the bottom of the movable plate 4, and an electric support rod 3 is provided below the adapter 15. The installation end of the electric support rod 3 is away from the movable plate 4, and the installation end of the electric support rod 3 is connected to the support frame 1, and the telescopic end of the electric support rod 3 is rotatably connected to the adapter 15 through a rotating member. The synchronous rise or fall of the two electric support rods 3 can make the movable plate 4 switch the use position according to the use requirements. The lifting and lowering of an electric support rod 3 can make the movable plate 4 tilt to one end, and then the branch core on the movable plate 4 can fall to the unloading conveyor belt here. Through this operation mode, the branch core can be unloaded to both ends, which can effectively reduce the unloading pressure and increase the convenience of the device.

[0028] As a technical optimization solution of the present invention, the second auxiliary mechanism includes a through plate 24 and a through rod 25. A third slot 21 is provided inside the movable plate 4. A plurality of through holes 19 are evenly penetrated through the top inner wall of the third slot 21. A through plate 24 is movably installed inside the third slot 21. A plurality of through rods 25 are evenly installed on the through plate 24. The through rods 25 can pass through the through holes 19. The through rods 25 pass through the through holes 19 and then through the sieve holes 18, so as to clear the blocked sieve holes 18 and increase the convenience of using the device.

[0029] As a technical optimization solution of the present invention, both ends of the inner wall of the third slot 21 are provided with a first slide groove 22, and a first electric slider 23 is slidably installed inside the first slide groove 22, and the first electric slider 23 is connected to the through plate 24 on the side close to the through plate 24. During the use of the device, the two electric support rods 3 extend synchronously, so that the movable plate 4 moves upward. When the movable plate 4 moves to the preset position, the through plate 24 moves upward by sliding the first electric slider 23 in the first slide groove 22, and the through rod 25 extends upward through the through hole 19 and passes through the sieve hole 18. The sieve hole 18 can be unblocked by this operation mode. When the sieve hole 18 is blocked, it can be automatically unblocked, thereby increasing the functional operation stability and convenience of the device.

[0030] When the present invention is in use, the device is suitable for separating and screening the core and skin of branches after crushing. The device is provided with a feeding pipe above the top of the screen plate 7, which is used to lower the broken branch mixture to the top of the screen plate 7. The electrical equipment used in the device is powered by an external power supply through a wire. The device controls the electrical equipment in the device by setting up a background control system. The air inlet 14 is connected to a preset fan outside the device through a conduit. The wind of the fan can enter the interior of the second slot 20 through the air inlet 14, and then be ejected outward through the air outlet 17. The arrangement of the through rods 25 corresponds to the sieve holes 18, and the through rods 25 can extend to the interior of the sieve holes 18. The device is provided with a feeding conveyor belt below both ends of the movable plate 4 and below the first baffle 2.

[0031] When it is necessary to screen the branches, the rotating motor 32 drives the rotating rod 11 to rotate, so that the rotating rod 11 rotates to a state that it is horizontal with the lifting plate 10, and then the feeding pipe puts the branch crushing mixture down to the top of the screen plate 7, and the lifting plate 10 moves downward to a preset height position through the lifting of the electric lifting rod 9. At this time, the moving plate 12 moves to a preset position above the screen plate 7, and the second electric slider 30 slides in the second slide groove 29 to move the moving plate 12, so that the branch crushing mixture on the screen plate 7 can be moved, so that the distribution of the branch crushing mixture is more uniform, which is convenient for the device to separate the core and skin of the branches, and increases the convenience of use of the device; At the same time, the electric telescopic rod 6 performs reciprocating telescopic motion, so that the screen plate 7 performs reciprocating screening motion. Through the screening motion of the screen plate 7, the branch core on the screen plate 7 will fall through the screen hole 18 under the action of gravity and screening. During the falling process, the air outlet 17 ejects air outward to blow the falling branch core. At this time, small pieces of branch skin and leaf fragments falling with the branch core will be blown toward the first baffle 2, and pass through the first slot 16 and fall from the first baffle 2 to the unloading conveyor belt below the first baffle 2. The branch core will fall to the top of the movable plate 4 under the action of gravity. This operation method can complete the separation of the core and skin of the branch.

[0032] The electric support rod 3 at one end of the bottom of the movable plate 4 can be extended and retracted separately, so that the movable plate 4 can be tilted to one end, and then the branch core on the movable plate 4 can fall to the unloading conveyor belt here. Through this operation method, the branch core can be unloaded to both ends separately, which can effectively reduce the unloading pressure at one end and increase the convenience of using the device.

[0033] After the branch crushing mixture is screened on the top of the sieve plate 7 for a preset time, the light branch skin and large pieces of skin leaves will remain on the top of the sieve plate 7. At this time, the two moving plates 12 move closer to each other, and the moving plates 12 can clamp the residues on the top of the sieve plate 7. Then the lifting plate 10 rises to a preset height position, and the rotating rod 11 rotates to Figure 1 In the state shown, the two movable plates 12 that clamp the residues then move toward the first baffle plate 2. After moving to the preset position, the lifting plate 10 is lowered. When the movable plates 12 descend to the preset position, the two movable plates 12 move away from each other. At this time, the clamped residues can be lowered from the first baffle plate 2, which increases the convenience of using the device.

[0034] During the use of the device, the two electric support rods 3 extend synchronously, causing the movable plate 4 to move upward. When the movable plate 4 moves to the preset position, the first electric slider 23 slides in the first slide groove 22 to cause the through plate 24 to move upward, and the through rod 25 extends upward through the through hole 19 and passes through the sieve hole 18, so that the top of the through rod 25 extends to above the top of the sieve hole 18. The sieve hole 18 can be dredged through this operation method. When the sieve hole 18 is blocked, it can be automatically dredged, thereby increasing the functional operation stability and ease of use of the device.

[0035] When the device is finished using, the third electric slider 35 slides in the third slide groove 34, so that the brush 33 moves out of the fourth slot 31 and abuts against the top of the sieve plate 7. Subsequently, the movable plate 12 moves on the sieve plate 7 to complete the self-cleaning of the sieve plate 7, thereby increasing the convenience of using the device.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A screening device for separating the core and skin during branch recovery, comprising a support frame (1), characterized in that: Both ends of the top of the support frame (1) are provided with fixed rods (5), a lifting plate (10) is movably installed above the top of the support frame (1), a rotating rod (11) is movably installed at the bottom of the lifting plate (10), and a first auxiliary mechanism is provided at the bottom of the rotating rod (11), a sieve plate (7) is movably installed between the two fixed rods (5), a plurality of sieve holes (18) are evenly penetrated on the sieve plate (7), a second baffle plate (8) is provided on the top of the sieve plate (7), fixed plates (13) are provided on both sides of the inner wall of the support frame (1), a movable plate (4) is movably installed between the two fixed plates (13), and a second auxiliary mechanism is provided on the movable plate (4), and a first baffle plate (2) is installed on one side of the support frame (1).

2. A screening device for core-skin separation in the branch recovery process according to claim 1, characterized in that: A first slot (16) is formed through the top of the fixing plate (13) near the first baffle (2), a second slot (20) is formed inside the upper section of the other fixing plate (13), a plurality of air outlet holes (17) are formed evenly through the inner wall of the second slot (20) near the first slot (16), and an air inlet hole (14) is formed through the inner wall of the second slot (20) away from the first slot (16).

3. A screening device for core-skin separation in the branch recovery process according to claim 1, characterized in that: Both ends of the bottom of the lifting plate (10) are connected to electric lifting rods (9), the mounting end of the electric lifting rod (9) faces downward, and the mounting end of the electric lifting rod (9) is connected to the top of the fixed rod (5), and the lifting plate (10) is embedded with a rotating motor (32) at the bottom near the rotating rod (11), the output end of the rotating motor (32) faces downward, and the output end of the rotating motor (32) is connected to the top of the rotating rod (11).

4. A screening device for core-skin separation in the branch recovery process according to claim 1, characterized in that: The first auxiliary mechanism comprises a movable plate (12) and a brush (33); two movable plates (12) are movably mounted at the bottom of the rotating rod (11); a fourth slot (31) is provided at the bottom of the movable plate (12); a brush (33) is movably mounted inside the fourth slot (31); third sliding slots (34) are provided at both ends of the inner wall of the fourth slot (31); third electric sliders (35) are mounted at both ends of the brush (33); and the third electric slider (35) is slidably mounted inside the third sliding slot (34).

5. A screening device for core-skin separation in the branch recovery process according to claim 4, characterized in that: A second slide groove (29) is provided at the bottom of the rotating rod (11), and a second electric slider (30) is installed at the top of the movable plate (12). The second electric slider (30) is slidably installed inside the second slide groove (29).

6. The screening device for core-skin separation in the branch recovery process according to claim 1, characterized in that: The four corners of the bottom of the sieve plate (7) are all provided with positioning rods (26), one end of the positioning rod (26) close to the fixing rod (5) is connected to the fixing rod (5), the bottom of the positioning rod (26) is connected to the top of the support frame (1), a reciprocating slide groove (27) is provided on the top of the positioning rod (26), a reciprocating slider (28) is slidably installed inside the reciprocating slide groove (27), and the top of the reciprocating slider (28) is connected to the bottom of the sieve plate (7).

7. A screening device for core-skin separation in the branch recovery process according to claim 6, characterized in that: An electric telescopic rod (6) is embedded and installed on a side of the fixed rod (5) close to the sieve plate (7), the telescopic end of the electric telescopic rod (6) faces the sieve plate (7), and the telescopic end of the electric telescopic rod (6) is connected to the sieve plate (7).

8. The screening device for core-skin separation in the branch recovery process according to claim 1, characterized in that: Both ends of the bottom of the movable plate (4) are equipped with adapters (15), an electric support rod (3) is provided below the adapter (15), the mounting end of the electric support rod (3) is away from the movable plate (4), and the mounting end of the electric support rod (3) is connected to the support frame (1), and the telescopic end of the electric support rod (3) is rotatably connected to the adapter (15) via a rotating member.

9. The screening device for core-skin separation in the branch recovery process according to claim 1, characterized in that: The second auxiliary mechanism comprises a through plate (24) and through rods (25); a third slot (21) is provided inside the movable plate (4); a plurality of through holes (19) are evenly penetrated through the top inner wall of the third slot (21); a through plate (24) is movably installed inside the third slot (21); a plurality of through rods (25) are evenly installed on the through plate (24); and the through rods (25) can pass through the through holes (19).

10. A screening device for core-skin separation in the branch recovery process according to claim 9, characterized in that: Both ends of the inner wall of the third slot (21) are provided with a first slide slot (22), a first electric slider (23) is slidably mounted inside the first slide slot (22), and the first electric slider (23) is connected to the through plate (24) at one side thereof close to the through plate (24).

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