Screening device for straw recovery

Abstract

The utility model discloses a screening device for straw recovery, which belongs to the technical field of straw recovery and comprises a screening box, a screening cylinder is arranged in the screening box, a feeding port matched with the input end of the screening cylinder is arranged on one side of the screening box, the screening cylinder is inclined, the screen mesh of the screening cylinder has various apertures, and the screening cylinder is provided with a feeding port matched with the input end of the screening cylinder. A first blanking port and a second blanking port are formed in the lower end of the screening box, a connecting assembly used for being connected with the screening barrel is arranged in the feeding port, and an adjusting assembly used for driving the screening barrel to rotate and adjusting the aperture of the screen is arranged on the other side of the screening box. The straw screening device has the advantages that the screening barrel, the moving plate, the rotating shaft, the supporting rod, the connecting plate and the vibration motor are arranged, so that the screening barrel conducts vibration screening on materials, large-particle materials are discharged out of the first discharging port, small-particle materials are discharged out of the second discharging port, impurities and substances with different particle sizes in straw are efficiently separated, and the screening effect is good. And the purity and the treatment efficiency of straw recovery are improved.

Description

Technical Field

[0001] This utility model relates to the field of straw recycling technology, and in particular to a screening device for straw recycling. Background Technology

[0002] Straw is a general term for the stems and leaves (ears) of mature crops, typically referring to the residue left after harvesting wheat, rice, corn, potatoes, rapeseed, cotton, sugarcane, and other crops (usually coarse grains). More than half of the products of crop photosynthesis are found in straw. Straw is rich in nitrogen, phosphorus, potassium, calcium, magnesium, and organic matter, making it a versatile and renewable biological resource. During straw recycling, the straw is first pre-treated by crushing, and then sieved using a screening device.

[0003] Most screening devices use a screen plate and a vibrating motor to vibrate the screen plate and screen impurities in the straw. However, during operation, the mesh size of the screen plate is difficult to adjust, making it impossible to efficiently separate different types of straw, resulting in poor separation effect. Utility Model Content

[0004] The purpose of this utility model is to provide a screening device for straw recycling in order to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A screening device for straw recycling includes a screening box with a screening cylinder inside. A feeding port that mates with the input end of the screening cylinder is located on one side of the screening box. The screening cylinder is inclined and has various screen mesh sizes. A first discharge port and a second discharge port are located at the lower end of the screening box. A connecting component for connecting the screening cylinder is located inside the feeding port. An adjusting component for driving the screening cylinder to rotate and adjusting the screen mesh size is located on the other side of the screening box.

[0007] As a further description of the above technical solution:

[0008] The connecting assembly includes a movable plate slidably disposed inside the feeding port and a rotating shaft rotatably disposed inside the movable plate. The outer surface of the rotating shaft is fixedly connected to the inner wall of the screening cylinder via a support rod. A vibration motor is provided on one side of the screening box, and a connecting plate is provided at the upper end of the vibration motor. The connecting plate is fixedly connected to the movable plate.

[0009] As a further description of the above technical solution:

[0010] The adjustment assembly includes an end plate slidably disposed on the outside of the screening box and a fixed shell disposed on the outside of the end plate. A hollow rotating shaft is rotatably disposed through the middle of the end plate. The outer surface of the hollow rotating shaft is fixedly connected to the inner wall of the screening cylinder through a connecting rod. A threaded rod is threaded through the middle of the fixed shell. One end of the threaded rod is smooth and has a spiral groove on its surface. The spiral groove and the threaded rod have different thread pitches. A protrusion that mates with the spiral groove is fixedly disposed on the inner wall of the hollow rotating shaft. An opening that mates with the hollow rotating shaft is provided on the side wall of the screening box. A handle is provided at one end of the threaded rod. A limiting member is provided between the handle and the fixed shell.

[0011] As a further description of the above technical solution:

[0012] The limiting component includes a fixed tube fixed to the handle and a snap-fit ​​rod slidably disposed inside the fixed tube. The surface of the fixed shell has multiple slots that cooperate with one end of the snap-fit ​​rod. The other end of the snap-fit ​​rod is connected to the inner wall of the fixed tube by a spring. A handle is fixedly disposed on the outer surface of the snap-fit ​​rod.

[0013] As a further description of the above technical solution:

[0014] The screening box is equipped with a guide plate that cooperates with the second discharge port, and the bottom surface of the screening box is respectively fixed with baffles that cooperate with the first discharge port and the second discharge port.

[0015] As a further description of the above technical solution:

[0016] A vibration motor is also provided on the other side of the screening box, and the vibration motor is connected to the lower end face of the end plate.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0018] In this invention, by setting up a screening cylinder, a moving plate, a rotating shaft, a support rod, a connecting plate, and a vibrating motor, the screening cylinder vibrates and screens the material. Large particles are discharged from the first discharge port, and small particles are discharged through the second discharge port, which efficiently separates impurities and substances of different particle sizes in straw, thereby improving the purity and processing efficiency of straw recycling.

[0019] In this invention, a hollow rotating shaft, end plate, threaded rod, spiral groove, and protrusion are provided to drive the threaded rod to rotate, thereby rotating the screening cylinder and adjusting the size of the screen mesh aperture on the surface of the screening cylinder. With the cooperation of the locking rod and the locking groove, the stability of the screening cylinder after position adjustment is effectively guaranteed. By adjusting the screen mesh aperture, different types of straw can be efficiently separated and secondary pollution can be reduced. This device is suitable for the reuse and resource treatment of agricultural waste, and helps to improve the comprehensive utilization value and environmental benefits of straw. Attached Figure Description

[0020] Figure 1 An external view of the screening device provided according to an embodiment of the present invention is shown;

[0021] Figure 2 A cross-sectional view of the screening device structure provided according to an embodiment of the present invention is shown;

[0022] Figure 3 An exploded view of the adjustment assembly and screening cylinder structure provided according to an embodiment of the present invention is shown;

[0023] Figure 4 A cross-sectional view of the adjustment component structure provided according to an embodiment of the present invention is shown.

[0024] Figure 5 A schematic diagram of a limiting member structure provided according to an embodiment of the present utility model is shown.

[0025] Legend: 1. Screening box; 2. Feeding port; 3. Moving plate; 4. Connecting plate; 5. Vibrating motor; 6. Screening cylinder; 7. First discharge port; 8. Guide plate; 9. Second discharge port; 10. Hollow rotating shaft; 11. End plate; 12. Connecting rod; 13. Fixed shell; 14. Threaded rod; 15. Fixed tube; 16. Swirling groove; 17. Protrusion; 18. Slot; 19. Spring; 20. Connecting rod; 21. Handle; 22. Baffle. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1

[0028] like Figures 1-5 As shown, a screening device for straw recycling includes a screening box 1, a screening cylinder 6 inside the screening box 1, a feeding port 2 on one side of the screening box 1 that cooperates with the input end of the screening cylinder 6, the screening cylinder 6 being inclined, the screen mesh of the screening cylinder 6 having various apertures, a first discharge port 7 and a second discharge port 9 respectively at the lower end of the screening box 1, a connecting component inside the feeding port 2 for connecting the screening cylinder 6, and an adjustment component on the other side of the screening box 1 for driving the screening cylinder 6 to rotate and adjusting the screen mesh aperture.

[0029] Furthermore, the connecting assembly includes a movable plate 3 slidably disposed inside the feeding port 2 and a rotating shaft rotatably disposed inside the movable plate 3. The outer surface of the rotating shaft is fixedly connected to the inner wall of the screening cylinder 6 via a support rod. A vibration motor 5 is provided on one side of the screening box 1, and a connecting plate 4 is provided at the upper end of the vibration motor 5. The connecting plate 4 is fixedly connected to the movable plate 3. In use, the pre-treated straw is added to the screening cylinder 6 from the feeding port 2. The vibration motor 5 works to drive the screening cylinder 6 to vibrate and perform screening operations on the straw. The granular impurities attached to the straw are vibrated off and then discharged from the second discharge port 9. The straw falls from the output end of the screening cylinder 6 along the screening cylinder 6 and is discharged from the first discharge port 7, which is convenient for workers to recycle.

[0030] Furthermore, the adjustment assembly includes an end plate 11 slidably disposed on the outside of the screening box 1 and a fixed shell 13 disposed on the outside of the end plate 11. A hollow rotating shaft 10 is rotatably disposed through the middle of the end plate 11. The outer surface of the hollow rotating shaft 10 is fixedly connected to the inner wall of the screening cylinder 6 through a connecting rod 12. A threaded rod 14 is threadedly disposed through the middle of the fixed shell 13. One end of the threaded rod 14 is smooth and has a spiral groove 16 on its surface. The spiral groove 16 and the threaded rod 14 have different thread pitches. A protrusion 17 that mates with the spiral groove 16 is fixedly disposed on the inner wall of the hollow rotating shaft 10. A protrusion 17 that mates with the spiral groove 16 is disposed on the side wall of the screening box 1. The 10-part fitting port has a handle at one end of the threaded rod 14. A limiting component is provided between the handle and the fixed shell 13. During use, the operator adjusts the screen aperture on the lower surface of the screening cylinder 6 according to the usage requirements. First, the operator drives the threaded rod 14 to rotate. The rotation of the threaded rod 14 drives the rotating groove 16 to rotate. With the cooperation of the rotating groove 16 and the protrusion 17, the rotation of the threaded rod 14 drives the hollow rotating shaft 10 to rotate due to the different thread pitch between the rotating groove 16 and the threaded rod 14. This adjusts the screen aperture of the screening cylinder 6, efficiently separating impurities and substances of different particle sizes in the straw.

[0031] Furthermore, the limiting component includes a fixed tube 15 fixed to the handle and a snap-fit ​​rod 20 slidably disposed inside the fixed tube 15. The surface of the fixed shell 13 is provided with multiple slots 18 that cooperate with one end of the snap-fit ​​rod 20. The other end of the snap-fit ​​rod 20 is connected to the inner wall of the fixed tube 15 through a spring 19. A handle 21 is fixedly provided on the outer surface of the snap-fit ​​rod 20. In use, the operator first pulls the handle 21 to disengage the snap-fit ​​rod 20 from the slot 18, and then rotates the threaded rod 14. When the snap-fit ​​rod 20 is aligned with another slot 18 again, the snap-fit ​​rod 20 is engaged in the slot 18 under the reset action of the spring 19, thereby limiting and fixing the rotation of the threaded rod 14, that is, limiting and fixing the rotation of the hollow rotating shaft 10, ensuring the stability of the screen cylinder 6 after the position is adjusted.

[0032] Furthermore, the screening box 1 is equipped with a guide plate 8 that cooperates with the second discharge port 9. The bottom surface of the screening box 1 is respectively fixed with baffles 22 that cooperate with the first discharge port 7 and the second discharge port 9. Under the action of the guide plate 8, the impurity particles filtered through the mesh of the screening cylinder 6 slide down the guide plate 8 to the second discharge port 9 and are discharged from the second discharge port 9.

[0033] Furthermore, a vibration motor 5 is also provided on the other side of the screening box 1. The vibration motor 5 is connected to the lower end face of the end plate 11, which effectively improves the vibration effect of the screening cylinder 6 and achieves the effect of efficient separation of impurities.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A screening device for straw recycling, comprising a screening box (1), characterized in that, The screening box (1) is internally provided with a screening cylinder (6), one side of the screening box (1) is provided with a feeding port (2) matched with the input end of the screening cylinder (6), the screening cylinder (6) is in an inclined shape, the screening cylinder (6) has multiple mesh sizes, the lower end of the screening box (1) is respectively provided with a first discharge port (7) and a second discharge port (9), the feeding port (2) is internally provided with a connecting assembly for connecting the screening cylinder (6), the other side of the screening box (1) is provided with an adjusting assembly for driving the screening cylinder (6) to rotate so as to adjust the mesh size. The connecting assembly comprises a moving plate (3) slidingly arranged in the feeding port (2) and a rotating shaft rotatably arranged on the inner side of the moving plate (3), the outer surface of the rotating shaft is fixedly connected with the inner wall of the screening cylinder (6) through a supporting rod, one side of the screening box (1) is provided with a vibrating motor (5), the upper end of the vibrating motor (5) is provided with a connecting plate (4), and the connecting plate (4) is fixedly connected with the moving plate (3). The adjusting assembly comprises an end plate (11) slidingly arranged on the outer side of the screening box (1) and a fixed shell (13) arranged on the outer side of the end plate (11), the middle part of the end plate (11) is rotatably provided with a hollow rotating shaft (10), the outer surface of the hollow rotating shaft (10) is fixedly connected with the inner wall of the screening cylinder (6) through a connecting rod (12), the middle part of the fixed shell (13) is threadedly provided with a threaded rod (14), one end of the threaded rod (14) is smooth and the surface is provided with a spiral groove (16), the spiral groove (16) and the threaded rod (14) have different thread intervals, the inner wall of the hollow rotating shaft (10) is fixedly provided with a protrusion (17) matched with the spiral groove (16), the side wall of the screening box (1) is provided with a through hole matched with the hollow rotating shaft (10), one end of the threaded rod (14) is provided with a handle, and a limiting piece is arranged between the handle and the fixed shell (13).

2. The screening device for straw recycling according to claim 1, characterized in that, The limiting piece comprises a fixed tube (15) fixedly arranged on the handle and a clamping rod (20) slidingly arranged in the fixed tube (15), the surface of the fixed shell (13) is provided with a plurality of clamping grooves (18) matched with one end of the clamping rod (20), the other end of the clamping rod (20) is connected with the inner wall of the fixed tube (15) through a spring (19), and the outer surface of the clamping rod (20) is fixedly provided with a handle (21).

3. The screening device for straw recycling according to claim 1, characterized in that, The inside of the screening box (1) is provided with a guide plate (8) matched with the second discharge port (9), and the inner bottom surface of the screening box (1) is respectively fixedly provided with a baffle (22) matched with the first discharge port (7) and the second discharge port (9).

4. The screening device for straw recycling according to claim 1, characterized in that, The other side of the screening box (1) is also provided with a vibrating motor (5), and the vibrating motor (5) is connected with the lower end surface of the end plate (11).

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