A screening device for separating the core and bark after the branch recycling process

Abstract

The present invention relates to the technical field of branch recycling, and specifically discloses a screening device for separating the core and bark during the branch recycling process, including a support frame. At both ends of the top of the support frame, fixed rods are installed. Above the top of the support frame, a lifting plate is movably installed. At the bottom of the lifting plate, a rotating rod is movably installed. At the bottom of the rotating rod, a first auxiliary mechanism is provided. Between the two fixed rods, a sieve plate is movably installed. The present invention is provided with a movable plate and a through rod. When the sieve holes are blocked, the movable plate moves upward to a preset position. Through the sliding of the first electric slider in the first chute, the through plate moves upward, 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 above the top of the sieve hole. By this operation method, the sieve holes can be dredged, increasing the functional operation stability and use convenience of the device. The fully automatic production method also reduces the labor intensity of the staff.

Description

Technical Field

[0001] The present invention relates to the technical field of branch recycling, and particularly to a screening device for separating the core and bark during the branch recycling process. Background Art

[0002] As a biomass resource, branches are rich in lignin and cellulose. Through recycling treatment, they can be transformed into various valuable products. The accumulation and burning of waste branches will cause environmental pollution. Through recycling treatment, environmental pollution can be reduced and the recycling of resources can be realized.

[0003] Currently, when recycling branches, in order to better process the recycled materials and control the quality of the processed products in the later stage, the branches will be separated into the core and bark first, and then processed separately to improve the quality of the subsequent processed products. At present, the separation of the core and bark mostly adopts a crushing method for separation, and then the crushed materials are screened. During the screening process, the crushed materials are easy to block the sieve holes, resulting in the unsmooth use of the device function. At this time, the staff still needs to manually dredge, increasing the labor intensity of the staff and affecting the processing efficiency of the device. Summary of the Invention

[0004] The purpose of the present invention is to solve the deficiencies existing in the prior art, and to propose a screening device for separating the core and bark during the branch recycling process.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A screening device for separating the core and bark during the branch recycling process, including a support frame. Both ends of the top of the support frame are installed with fixed rods. Above the top of the support frame, a lifting plate is movably installed. At the bottom of the lifting plate, a rotating rod is movably installed. At the bottom of the rotating rod, a first auxiliary mechanism is provided. Between the two fixed rods, a sieve plate is movably installed. A plurality of sieve holes are evenly penetrated through the sieve plate. Above the sieve plate, a second baffle is provided. On both sides of the inner wall of the support frame, fixing plates are provided. Between the two fixing plates, a movable plate is movably installed. On the movable plate, a second auxiliary mechanism is provided. On one side of the support frame, a first baffle is installed.

[0007] Preferably, a first slot is penetrated through the top of the fixing plate close to the first baffle. Inside the upper section of the other fixing plate, a second slot is opened. On the inner wall of the second slot close to the first slot, a plurality of air outlet holes are evenly penetrated. On the inner wall of the second slot far from the first slot, an air inlet hole is penetrated.

[0008] Preferably, both ends of the bottom of the lifting plate are connected with electric lifting rods. The installation ends of the electric lifting rods face downward, and the installation ends of the electric lifting rods are connected to the top of the fixed rods. A rotary motor is embedded at the bottom of the lifting plate near the rotating rod. The output end of the rotary motor faces downward, and the output end of the rotary motor is connected to the top of the rotating rod.

[0009] Preferably, the first auxiliary mechanism includes a moving plate and a brush. Two moving plates are movably installed at the bottom of the rotating rod. A fourth slotted groove is opened at the bottom of the moving plate. A brush is movably installed inside the fourth slotted groove. Third sliding grooves are opened at both ends of the inner wall of the fourth slotted groove. Third electric sliders are installed at both ends of the brush. The third electric sliders are slidably installed inside the third sliding grooves.

[0010] Preferably, a second sliding groove is opened at the bottom of the rotating rod. A second electric slider is installed at the top of the moving plate. The second electric slider is slidably installed inside the second sliding groove.

[0011] Preferably, positioning rods are provided at the four corners of the bottom of the sieve plate. One end of the positioning rod close to the fixed rod is connected to the fixed rod. The bottom of the positioning rod is connected to the top of the support frame. A reciprocating sliding groove is opened at the top of the positioning rod. A reciprocating slider is slidably installed inside the reciprocating sliding groove. The top of the reciprocating slider is connected to the bottom of the sieve plate.

[0012] Preferably, an electric telescopic rod is embedded on one 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.

[0013] Preferably, connecting pieces are installed at both ends of the bottom of the movable plate. An electric support rod is provided below the connecting piece. The installation end of the electric support rod is far away from the movable plate, and the installation end of the electric support rod is connected to the support frame. The telescopic end of the electric support rod is rotationally connected to the connecting piece through a rotating piece.

[0014] Preferably, the second auxiliary mechanism includes a through plate and a through rod. A third slotted groove is opened inside the movable plate. A plurality of through holes are uniformly penetrated through the top inner wall of the third slotted groove. A through plate is movably installed inside the third slotted groove. A plurality of through rods are uniformly installed on the through plate. The through rods can pass through the through holes.

[0015] Preferably, first sliding grooves are opened at both ends of the inner wall of the third slotted groove. First electric sliders are slidably installed inside the first sliding grooves. One side of the first electric slider close to the through plate is connected to the through plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] In the present invention, by providing a movable plate and a through rod, when the sieve holes are blocked, the movable plate moves upward to a preset position. The through plate moves upward through the sliding of the first electric slider in the first chute. The through rod extends upward through the through hole and passes through the sieve holes, so that the top of the through rod extends above the top of the sieve holes. Through this operation method, the sieve holes can be dredged, the functional operation stability of the device is increased, and the use convenience is improved. The fully automatic production method also reduces the labor intensity of the staff;

[0018] The electric support rod at one end of the bottom of the movable plate can be telescopically adjusted independently, so that the movable plate can tilt to one end. Subsequently, the branch cores on the movable plate can fall onto the blanking conveyor belt here. Through this operation method, the branch cores can be blanked to both ends respectively, which can effectively reduce the blanking pressure at one end and improve the use convenience of the device.

[0019] In the present invention, by providing a moving plate and a brush, when screening the branch crushing mixture, the moving plate moves through the sliding of the second electric slider in the second chute, which can stir the branch crushing mixture on the sieve plate, making the distribution of the branch crushing mixture more uniform, facilitating the core-skin separation of the branches by the device, and improving the use convenience of the device;

[0020] After the branch crushing mixture is screened on the top of the sieve plate for a preset time, the lighter branch bark and large pieces of bark and leaves will remain on the top of the sieve plate. At this time, the two moving plates move closer to each other to clamp the residues on the top of the sieve plate. Subsequently, the two moving plates clamping the residues move above the first baffle. When the lifting plate descends to the preset position, the two moving plates move away from each other. At this time, the clamped residues can be lowered from the first baffle to complete the auxiliary blanking of the device, improving the use convenience of the device;

[0021] When the device is used up, the brush moves out of the internal of the fourth slot through the sliding of the third electric slider in the third chute, and the brush can abut against the top of the sieve plate. Subsequently, through the movement of the moving plate on the sieve plate, the self-cleaning of the sieve plate can be completed, improving the use convenience of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 is the present invention Figure 1 is an axonometric view;

[0024] Figure 3 is a schematic diagram of the support frame structure of the present invention;

[0025] Figure 4Schematic diagram of the first baffle of the present invention;

[0026] Figure 5 Schematic diagram of the fixing plate of the present invention;

[0027] Figure 6 Schematic diagram of the air outlet and the second slot of the present invention;

[0028] Figure 7 Schematic diagram of the sectional view of the movable plate of the present invention;

[0029] Figure 8 Schematic diagram of the installation structure of the through plate and the through rod of the present invention;

[0030] Figure 9 Schematic diagram of the installation structure of the reciprocating slider of the present invention;

[0031] Figure 10 Schematic diagram of the installation structure of the second electric slider of the present invention;

[0032] Figure 11 Schematic diagram of the installation structure of the rotating motor of the present invention;

[0033] Figure 12 Schematic diagram of the installation structure of the brush of the present invention;

[0034] Figure 13 Of the present invention Figure 12 Enlarged structure schematic diagram at A in

[0035] 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, moving plate; 13, fixing 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 chute; 23, first electric slider; 24, through plate; 25, through rod; 26, positioning rod; 27, reciprocating chute; 28, reciprocating slider; 29, second chute; 30, second electric slider; 31, fourth slot; 32, rotating motor; 33, brush; 34, third chute; 35, third electric slider. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0037] Refer to Figure 1-13, A screening device for separating the core and bark during the branch recycling process, including a support frame 1. At both ends of the top of the support frame 1, fixed rods 5 are installed. Above the top of the support frame 1, a lifting plate 10 is movably installed. At the bottom of the lifting plate 10, a rotating rod 11 is movably installed. At the bottom of the rotating rod 11, a first auxiliary mechanism is provided. Between the two fixed rods 5, a sieve plate 7 is movably installed. A plurality of sieve holes 18 are evenly penetrated through the sieve plate 7. On the top of the sieve plate 7, a second baffle 8 is provided. On both sides of the inner wall of the support frame 1, fixing plates 13 are provided. Between the two fixing plates 13, a movable plate 4 is movably installed. On the movable plate 4, a second auxiliary mechanism is provided. On one side of the support frame 1, a first baffle 2 is installed. The first auxiliary mechanism can stir the mixture when the device screens the branches, improve the screening effect of the device on the branches, and can also complete the auxiliary feeding of the residues after screening. The second auxiliary mechanism can automatically dredge the sieve holes 18 when the sieve plate 7 is blocked, increasing the convenience of using the device.

[0038] As a technical optimization scheme of the present invention, a first slot 16 is penetrated through the top of the fixing plate 13 close to the first baffle 2. Inside the upper section of the other fixing plate 13, a second slot 20 is opened. On the inner wall of the second slot 20 close to the first slot 16, a plurality of air outlet holes 17 are evenly penetrated. On the inner wall of the second slot 20 far from the first slot 16, an air inlet hole 14 is penetrated. The air inlet hole 14 is connected to a preset fan outside the device through a conduit. The air of the fan can enter the inside of the second slot 20 through the air inlet hole 14, and then be ejected outward through the air outlet holes 17 to blow the falling branch cores. At this time, the small pieces of branch bark and leaf fragments falling together with the branch cores will be blown towards the direction of the first baffle 2 and pass through the first slot 16 to fall from the first baffle 2 to the feeding conveyor belt below the first baffle 2. The branch cores will fall to the top of the movable plate 4 under the action of gravity. Through this operation method, the separation of the core and bark of the branches can be completed.

[0039] As a technical optimization scheme of the present invention, at both ends of the bottom of the lifting plate 10, electric lifting rods 9 are connected. The installation ends of the electric lifting rods 9 face downward, and the installation ends of the electric lifting rods 9 are connected to the tops of the fixed rods 5. The lifting plate 10 is embedded with a rotating motor 32 at the bottom close to 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, facilitating the conversion of the rotating rod 11 to different use positions according to different use requirements. The electric lifting rods 9 can drive the lifting plate 10 to lift according to use requirements.

[0040] 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 formed at the bottom of the moving plate 12, and a brush 33 is movably installed inside the fourth slot 31. The brush 33 moves out of the inside of the fourth slot 31, and then through the movement of the moving plate 12, the sieve plate 7 can be cleaned, increasing the diversity of the device's usage functions.

[0041] As a technical optimization solution of the present invention, a second chute 29 is formed at the bottom of the rotating rod 11. A second electric slider 30 is installed at the top of the moving plate 12, and the second electric slider 30 is slidably installed inside the second chute 29. A brush 33 is movably arranged inside the fourth slot 31. Third chutes 34 are formed at both ends of the inner wall of the fourth slot 31. Third electric sliders 35 are installed at both ends of the brush 33, and the third electric sliders 35 are slidably installed inside the third chutes 34. Through the sliding of the third electric slider 35 in the third chute 34, the brush 33 moves out of the inside of the fourth slot 31. Through the sliding of the second electric slider 30 in the second chute 29, the moving plate 12 can move on the rotating rod 11.

[0042] 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. One end of the positioning rod 26 close to the fixed rod 5 is connected to the fixed rod 5, the bottom of the positioning rod 26 is connected to the top of the support frame 1, and a reciprocating chute 27 is formed at the top of the positioning rod 26. A reciprocating slider 28 is slidably installed inside the reciprocating chute 27, and the top of the reciprocating slider 28 is connected to the bottom of the sieve plate 7. Through the sliding of the reciprocating slider 28 in the reciprocating chute 27, the sieving action of the sieve plate 7 can be more stable, increasing the stability of the device's functional operation.

[0043] As a technical optimization solution of the present invention, an electric telescopic rod 6 is embedded and installed on one 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. Through the reciprocating telescopic movement of the electric telescopic rod 6, the sieve plate 7 makes a reciprocating sieving movement. Through the sieving action of the sieve plate 7, at this time, the branch cores on the sieve plate 7 will fall through the sieve holes 18 under the action of gravity and sieving.

[0044] As a technical optimization solution of the present invention, transfer members 15 are installed at both ends of the bottom of the movable plate 4. An electric support rod 3 is provided below the transfer member 15. The installation end of the electric support rod 3 is far from the movable plate 4, and the installation end of the electric support rod 3 is connected to the support frame 1. The telescopic end of the electric support rod 3 is rotatably connected to the transfer member 15 through a rotating member. The synchronous rising or falling of the two electric support rods 3 can enable the movable plate 4 to convert the use position according to the use requirements. The lifting of one electric support rod 3 can cause the movable plate 4 to tilt to one end. Subsequently, the branch cores on the movable plate 4 can fall onto the blanking conveyor belt here. Through this operation method, the branch cores can be blanked to both ends, which can effectively reduce the blanking pressure and increase the use convenience of the device.

[0045] 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 opened inside the movable plate 4. A plurality of through holes 19 are uniformly 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 uniformly installed on the through plate 24, and 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, which can complete the dredging of the blocked sieve holes 18 and increase the use convenience of the device.

[0046] As a technical optimization solution of the present invention, first chutes 22 are opened at both ends of the inner wall of the third slot 21. First electric sliders 23 are slidably installed inside the first chutes 22. The side of the first electric slider 23 close to the through plate 24 is connected to the through plate 24. 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 a preset position, the through plate 24 moves upward through the sliding of the first electric slider 23 in the first chute 22, and the through rods 25 extend upward through the through holes 19 and pass through the sieve holes 18. Through this operation method, the sieve holes 18 can be dredged. When the sieve holes 18 are blocked, automatic dredging can be performed, increasing the functional operation stability and use convenience of the device.

[0047] When the present invention is in use, the device is applicable to the core-skin separation and screening of broken branches. An upper feeding pipeline is provided above the top of the sieve plate 7 to lower the broken branch mixture to the top of the sieve plate 7. The electrical equipment used in this device is all powered by connecting to an external power source through wires. The device controls the electrical equipment in the device by setting a background control system. The air inlet hole 14 is connected to a preset fan outside the device through a conduit. The air of the fan can enter the interior of the second slot 20 through the air inlet hole 14 and then be ejected outward through the air outlet hole 17. The split arrangement of the through rods 25 corresponds to the sieve holes 18, and the through rods 25 can extend into the interior of the sieve holes 18. Feeding conveyors are provided below both ends of the movable plate 4 and below the first baffle 2 of the device.

[0048] 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 horizontal with the lifting plate 10. Subsequently, the upper feeding pipeline lowers the branch crushing mixture to the top of the sieve plate 7. Through the lifting of the electric lifting rod 9, the lifting plate 10 moves downward to a preset height position. At this time, the moving plate 12 moves to a preset position above the sieve plate 7. By the sliding of the second electric slider 30 in the second chute 29, the moving plate 12 can be moved to stir the branch crushing mixture on the sieve plate 7, making the distribution of the branch crushing mixture more uniform, facilitating the core-skin separation of the branches by the device, and increasing the convenience of use of the device.

[0049] At the same time, through the reciprocating telescopic movement of the electric telescopic rod 6, the sieve plate 7 makes a reciprocating sieving movement. Through the sieving action of the sieve plate 7, at this time, the branch cores on the sieve plate 7 will fall through the sieve holes 18 under the action of gravity and sieving. During the falling process of the branch cores, the air outlet hole 17 ejects air outward to blow the falling branch cores. At this time, the small pieces of branch bark and leaf fragments falling together with the branch cores will be blown towards the direction of the first baffle 2 and fall through the first slot 16 from the first baffle 2 to the feeding conveyor below the first baffle 2. The branch cores will fall to the top of the movable plate 4 under the action of gravity. Through this operation method, the core-skin separation of the branches can be completed.

[0050] The electric support rod 3 at one end of the bottom of the movable plate 4 can be telescopically extended independently, so that the movable plate 4 can be tilted towards one end. Subsequently, the branch cores on the movable plate 4 can fall to the feeding conveyor here. Through this operation method, the branch cores can be fed separately towards both ends, which can effectively reduce the feeding pressure at one end and increase the convenience of use of the device.

[0051] After the branch crushing mixture is screened on the top of the sieve plate 7 for a preset time, the lighter branch bark and large pieces of bark and leaves will remain on the top of the sieve plate 7. At this time, the two moving plates 12 move closer to each other. The moving plates 12 can clamp the residues on the top of the sieve plate 7. Subsequently, the lifting plate 10 rises to a preset height position, and the rotating rod 11 rotates to the state as shown in Figure 1 . Subsequently, the two moving plates 12 clamping the residues move towards the first baffle 2. When they move to a preset position, with the lowering of the lifting plate 10, when the moving plates 12 descend to a preset position, the two moving plates 12 move away from each other. At this time, the clamped residues can be released from the first baffle 2, which improves the convenience of using the device.

[0052] 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 a preset position, the through plate 24 moves upward through the sliding of the first electric slider 23 in the first chute 22. 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 above the top of the sieve hole 18. By this operation method, the sieve hole 18 can be dredged. When the sieve hole 18 is blocked, it can be automatically dredged, which improves the stability of the device's function operation and the convenience of use.

[0053] When the use of the device is over, through the sliding of the third electric slider 35 in the third chute 34, the brush 33 moves out of the interior of the fourth slot 31 and the brush 33 can abut against the top of the sieve plate 7. Subsequently, through the movement of the moving plate 12 on the sieve plate 7, the self-cleaning of the sieve plate 7 can be completed, which improves the convenience of using the device.

[0054] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and 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: The support frame (1) is provided with fixed rods (5) at both ends of the top, 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); 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 a rotating motor (32) is embedded and installed at the bottom of the lifting plate (10) 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); 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 slide grooves (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 slide groove (34); 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; 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); 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).

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: 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).

4. A 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).

5. A screening device for core-skin separation in the branch recovery process according to claim 4, 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).

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