Lignin production raw material screening device

Abstract

The utility model provides a lignin production raw material screening device. The lignin production raw material screening device comprises an assembling support and a feeding hopper fixed to the top of the assembling support. The material homogenizing part is mounted at the bottom of the feeding hopper; the vibration part is mounted on the assembly bracket; the screening part is rotationally mounted in the vibrating part through a rotating shaft, and the inner wall of the screening part is fixedly connected with a material distributing frame corresponding to the material homogenizing part; the blanking part is assembled on the vibrating part and the screening part and is used for supporting and pushing the screening part; according to the lignin production raw material screening device, a small amount of raw materials can be uniformly put into the screening part for screening multiple times through the arranged material homogenizing part, so that lignin fibers are prevented from being accumulated on the screen surface, the possibility that the fibers are interwoven into clusters is reduced, and the screening efficiency is effectively improved; screened impurities can be conveniently and rapidly discharged from the screening part, and use is convenient.

Description

Technical Field

[0001] This utility model relates to the field of lignin production technology, and more specifically, to a lignin production raw material screening device. Background Technology

[0002] Lignin fiber is an organic fiber obtained by chemically treating bamboo or natural wood. It usually appears as cotton wool and is white or grayish-white in color. Lignin fiber is very chemically stable and can remain stable at temperatures up to 250 degrees Celsius. It is not easily corroded by common solvents and acids and alkalis. It is also non-toxic, odorless, non-polluting, and non-radioactive. These properties make lignin fiber widely used in many fields such as asphalt, roads, concrete, mortar, gypsum products, wood pulp, and sponges. During lignin production, impurities in the raw materials need to be screened out using a screening device.

[0003] However, the screening plate inside the existing screening device is installed inside the machine body, which is not convenient to disassemble and clean. Impurities after screening are easily left on the screen and are not easy to clean. At the same time, when lignin raw materials flow into the screening plate, the lignin raw materials all flow in clusters and easily accumulate on the screening plate, affecting the screening effect. Utility Model Content

[0004] The purpose of this invention is to provide a lignin production raw material screening device to solve the above-mentioned problems.

[0005] To achieve the above objectives, this utility model provides a lignin production raw material screening device, comprising: an assembly bracket and a feed hopper fixed to the top of the assembly bracket;

[0006] A material equalization section is installed at the bottom of the feed hopper;

[0007] A vibrating element, which is mounted on the assembly bracket;

[0008] The screening section is rotatably installed inside the vibrating section via a rotating shaft, and a material distribution frame corresponding to the material equalization section is fixedly connected to the inner wall of the screening section.

[0009] The material feeding section is assembled on the vibrating section and the screening section to support and push the screening section;

[0010] A guide portion is mounted on the vibrating part and the mounting bracket. The guide portion is used to insert and stabilize the vibrating part.

[0011] The vibrating part is driven, and under the constraint of the guide part, the screening part moves vertically in the assembly bracket;

[0012] The material equalization section is used to uniformly transport the raw materials in the feed hopper to the screening pipe and to contact the material distribution frame;

[0013] The material discharge section is used to drive the screening section to rotate in the vibrating section, so that the raw material impurities in the screening section are discharged.

[0014] Furthermore, the screening section includes a screening tank disposed within the vibrating section, a cover detachably mounted on the top of the screening tank, a discharge pipe connected to the bottom of the screening tank, a feed inlet opened on the cover, and a filter screen detachably mounted inside the screening tank.

[0015] Furthermore, the material equalization section includes a material equalization pipe with one end connected to the feed hopper and the other end passing through the feed inlet and placed inside the screening tank, a drive motor installed outside the material equalization pipe, a control rod rotatably installed inside the material equalization pipe and fixedly connected to the output end of the drive motor, a plurality of material distribution plates circumferentially fixedly connected to the outer wall of the control rod and adapted to the inner wall of the material equalization pipe, and a guide frame fixed to the bottom of the material equalization pipe.

[0016] Furthermore, the vibration unit includes a plurality of buffer springs fixed in a circular array within the mounting bracket, a control frame fixed to the other end of the plurality of buffer springs, and two vibration motors symmetrically mounted on the control frame.

[0017] Furthermore, the material discharge section includes two hydraulic rods symmetrically hinged to the control frame, a discharge pipe connected to the screening tank, an electric push rod fixed to the outer wall of the screening tank, and a baffle fixed to the output end of the electric push rod and slidably assembled inside the discharge pipe.

[0018] The baffle is used to close the discharge pipe;

[0019] The output ends of both hydraulic rods are hinged to the screening tank.

[0020] Furthermore, the guide portion includes two guide brackets fixed on the control frame, several guide rails symmetrically fixed on the assembly bracket, and several guide wheels symmetrically fixed on the two guide brackets and slidably connected to the several guide rails respectively.

[0021] Furthermore, a rubber shielding ring is fixedly connected to the bottom of the cover to block the gap between the feed inlet and the equalizing tube.

[0022] Compared with the prior art, the embodiments of this utility model have the following beneficial effects:

[0023] This lignin production raw material screening device, by setting up a material equalization section, can evenly feed the raw material in the feed hopper into the screening section in small amounts multiple times. When the vibrating section drives the screening section to vibrate vertically under the restriction of the guide section, the material distribution rack in the screening section can disperse the raw material entering the screening tank, so that the raw material falls evenly on the filter screen. At the same time, it avoids the raw material from piling up and flowing into the screening tank, causing the raw material to accumulate into clumps. Furthermore, under the control of the material dropping section, it ensures that the filter screen in the screening section remains horizontal, preventing the raw material from accumulating in one place due to the tilt of the filter screen, thereby improving the screening efficiency and quality of the raw material.

[0024] This lignin production raw material screening device, through its feeding section, pushes and controls the tilting of the screening tank when the screening tank and vibrating section are used to vibrate and screen the raw materials. It also contacts the baffle to close the discharge pipe, so that impurities on the screen can be quickly discharged through the discharge pipe without the need for staff to disassemble the screening section to clean the impurities, making it convenient to use. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Figure 1 A perspective view of the present invention is shown;

[0027] Figure 2 A partial side view of the present invention is shown;

[0028] Figure 3 A partial perspective view of the present invention is shown;

[0029] Figure 4 A partially disassembled perspective view of this utility model is shown;

[0030] Figure 5 A partial cross-sectional perspective view of the present invention is shown.

[0031] In the picture

[0032] 1. Assembly bracket; 2. Material distribution section; 3. Vibrating section; 4. Screening section; 5. Discharge section; 6. Guide section; 7. Rotating shaft; 8. Screening tank; 9. Cover; 10. Discharge pipe; 11. Feed inlet; 12. Filter screen; 13. Material distribution pipe; 14. Drive motor; 15. Control rod; 16. Material distribution plate; 17. Flow guide frame; 18. Buffer spring; 19. Control frame; 20. Vibrating motor; 21. Hydraulic rod; 22. Discharge pipe; 23. Electric push rod; 24. Baffle; 25. Guide bracket; 26. Guide rail; 27. Guide wheel; 28. Rubber shielding ring; 29. ​​Feed hopper; 30. Material distribution frame. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0034] like Figure 1-5 As shown, a lignin production raw material screening device includes:

[0035] Assembly bracket 1, and feed hopper 29 fixed on the top of the assembly bracket 1;

[0036] The material equalization section 2 is installed at the bottom of the feed hopper 29;

[0037] Vibration unit 3, the vibration unit 3 is mounted on the assembly bracket 1;

[0038] Screening section 4 is rotatably installed inside the vibrating section 3 via a rotating shaft 7. The inner wall of the screening section 4 is fixedly connected to a material distribution frame 30 corresponding to the material equalization section 2.

[0039] The material feeding section 5 is assembled on the vibrating section 3 and the screening section 4, and is used to support and push the screening section 4.

[0040] Guide part 6, the guide part 6 is mounted on the vibrating part 3 and the mounting bracket 1, the guide part 6 is used to pass through and stabilize the vibrating part 3, wherein

[0041] Drive the vibrating part 3, and under the constraint of the guide part 6, the screening part 4 moves vertically in the assembly bracket 1;

[0042] The material equalization section 2 is used to uniformly transport the raw materials in the feed hopper 29 into the screening pipe and contact the material distribution frame 30;

[0043] The material discharge section 5 is used to drive the screening section 4 to rotate in the vibrating section 3 so that the raw material impurities in the screening section 4 are discharged.

[0044] In use, the raw material to be screened is fed into the feed hopper 29. Under the control of the equalization unit 2, the lignin raw material is conveyed to the screening tank 8 in small, frequent, and even feeds to prevent the raw material from accumulating and forming clumps. At the same time, the vibrating unit 3 operates, controlling the screening tank 8 to vibrate within the mounting bracket 1. Under the control of the guide unit 6, the horizontal movement of the vibrating unit 3 is restricted, causing the screening tank 8 to vibrate vertically within the mounting bracket 1. This causes the material distribution frame 30 in the screening tank 8 to vibrate. When the raw material fed into the screening tank 8 through the equalization unit 2 hits the material distribution frame 30, it is dispersed by the vibration and falls evenly onto the filter screen 12 for vibrating screening. This ensures that the material fully contacts the filter screen 12, thereby preventing surface contamination of the screening components. The low screening efficiency caused by surface material accumulation, and the vertical screening of the filter screen 12, while the filter screen 12 in the screening tank 8 is set horizontally, the lignin raw material in the screening tank 8 is thrown vertically, reducing horizontal entanglement and the risk of screen blockage. At the same time, the vertical vibration trajectory is clear, and small particles are easier to pass through the screen, improving screening efficiency. After the raw material screening is completed, the material discharge section 5 is activated. Two hydraulic rods 21 push the screening tank 8 to tilt, and the electric push rod 23 pulls the baffle 24 upward, releasing the blockage of the discharge pipe 22. During the vibration of the screening tank 8, the impurities screened on the filter screen 12 can be quickly discharged through the discharge pipe 22 without the need for personnel to disassemble and clean the filter section, making it convenient to use.

[0045] Optionally, the screening section 4 includes a screening tank 8 disposed within the vibrating section 3, a cover 9 detachably mounted on the top of the screening tank 8, a discharge pipe 10 connected to the bottom of the screening tank 8, a feed inlet 11 opened on the cover 9, and a filter screen 12 detachably mounted inside the screening tank 8. Through the feed inlet 11, the raw material passing through the equalization pipe 13 can fall into the screening tank 8 and be screened by the filter screen 12, and the screened raw material can be discharged through the discharge pipe 10. When necessary, the cover 9 on the screening tank 8 can also be removed to replace the filter screen 12.

[0046] Optionally, the material equalization section 2 includes a material equalization pipe 13 with one end connected to the feed hopper 29 and the other end passing through the feed inlet 11 and placed inside the screening tank 8; a drive motor 14 installed outside the material equalization pipe 13; a control rod 15 rotatably installed inside the material equalization pipe 13 and fixedly connected to the output end of the drive motor 14; several distribution plates 16 annularly fixedly connected to the outer wall of the control rod 15 and adapted to the inner wall of the material equalization pipe 13; and a guide frame 17 fixed to the bottom of the material equalization pipe 13. After the material is added to the feed hopper 29, the drive motor 14 operates, driving the control rod 15 to rotate, thereby causing the material distribution plates 16 to rotate in the material equalization pipe 13, and the raw material falls into the distribution plate 16. The material is fed into the two adjacent distribution plates 16 and then into the equalization pipe 13, and finally into the screening tank 8. By controlling the rotation speed of the distribution plates 16, the material is fed evenly and intermittently, which effectively avoids the accumulation of lignin fibers on the screen surface and reduces the possibility of fibers tangling into clumps. At the same time, when the material is discharged through the distribution pipe, under the guidance and restriction of the guide frame 17, the material will fall onto the distribution frame 30 in the middle of the screening tank 8. Then, when the screening section 4 is driven to vibrate by the vibration section 3, the vibrating distribution frame 30 will break it up and evenly fall onto the filter screen 12. This allows the material to fully contact the screen when screening a small amount of material at a time, making it easier for fine particles to pass through. This avoids misscreening caused by "excessive material layer on the screen", effectively improving the lignin screening efficiency, while also taking into account equipment protection and product quality.

[0047] Optionally, the vibration unit 3 includes a plurality of buffer springs 18 fixed in a ring array within the mounting bracket 1, a control frame 19 fixed at the other end of the plurality of buffer springs 18, and two vibration motors 20 symmetrically mounted on the control frame 19. In use, the two vibration motors 20 work simultaneously. The vibration force generated by the two vibration motors 20, combined with the elastic cooperation of the plurality of buffer springs 18, causes the control frame 19 to vibrate within the mounting bracket 1, thereby controlling the screening unit 4 to perform vibration screening.

[0048] Optionally, the material discharge section 5 includes two hydraulic rods 21 symmetrically hinged to the control frame 19, a discharge pipe 22 connected to the screening tank 8, an electric push rod 23 fixed to the outer wall of the screening tank 8, and a baffle 24 fixed to the output end of the electric push rod 23 and slidably assembled in the discharge pipe 22.

[0049] The baffle 24 is used to close the discharge pipe 22;

[0050] The output ends of both hydraulic rods 21 are hinged to the screening tank 8.

[0051] Optionally, the guide section 6 includes two guide brackets 25 fixed on the control frame 19, several guide rails 26 symmetrically fixed on the assembly bracket 1, and several guide wheels 27 symmetrically fixed on the two guide brackets 25 and slidably connected to the several guide rails 26. When the vibration section 3 operates, the control frame 19 and the internal screening section 4 vibrate to screen the raw materials in the screening tank 8. The several guide wheels 27 roll on the several guide rails 26, restricting the movement of the two guide brackets 25, thereby restricting the horizontal movement of the control frame 19. This allows the control frame 19 to drive the screening section 4 to move vertically, thereby causing the lignin raw materials in the screening tank 8 to be thrown vertically, reducing horizontal entanglement and lowering the risk of screen blockage. At the same time, the vertical vibration trajectory is clear, making it easier for small particles to pass through the screen, improving screening efficiency, and avoiding damage to the lignin fiber length by horizontal shearing force, thus maintaining its industrial application value.

[0052] Optionally, a rubber shielding ring 28 is fixedly connected to the bottom of the cover 9 to shield the gap between the feed inlet 11 and the uniform material pipe 13. The gap between the feed inlet 11 and the uniform material pipe 13 is to prevent the feed inlet 11 of the screening tank 8 from colliding and being damaged with the uniform material pipe 13 when the screening tank 8 is rotated and tilted. The rubber shielding ring 28 effectively shields the gap between the feed inlet 11 and the uniform material pipe 13 without affecting the movement of the screening tank 8, thereby preventing dust from overflowing from the gap when screening raw materials.

[0053] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A lignin production raw material screening device, characterized in that, include: Assembly bracket (1), feed hopper (29) fixed on top of the assembly bracket (1); A material equalization section (2) is installed at the bottom of the feed hopper (29); Vibration unit (3), the vibration unit (3) is mounted on the assembly bracket (1); Screening section (4), the screening section (4) is rotatably installed in the vibrating section (3) via a rotating shaft (7), and the inner wall of the screening section (4) is fixedly connected to a material distribution frame (30) corresponding to the material equalization section (2). The material feeding section (5) is assembled on the vibrating section (3) and the screening section (4) to support and push the screening section (4). Guide portion (6), the guide portion (6) is mounted on the vibrating part (3) and the mounting bracket (1), the guide portion (6) is used to insert and stabilize the vibrating part (3), wherein Driven by the vibrating part (3), the screening part (4) moves vertically in the assembly bracket (1) under the constraint of the guide part (6); The material equalization section (2) is used to uniformly transport the raw materials in the feed hopper (29) to the screening section (4) and contact the material distribution frame (30). The material discharge section (5) is used to push the screening section (4) to rotate in the vibrating section (3) so that the raw material impurities in the screening section (4) are discharged.

2. The lignin production raw material screening device as described in claim 1, characterized in that, The screening section (4) includes a screening tank (8) disposed in the vibrating section (3), a cover (9) detachably mounted on the top of the screening tank (8), a discharge pipe (10) connected to the bottom of the screening tank (8), a feed inlet (11) opened on the cover (9), and a filter screen (12) detachably mounted inside the screening tank (8).

3. The lignin production raw material screening device as described in claim 2, characterized in that, The material equalization section (2) includes a material equalization tube (13) with one end connected to the feed hopper (29) and the other end passing through the feed inlet (11) and placed in the screening tank (8), a drive motor (14) installed outside the material equalization tube (13), a control rod (15) rotatably installed inside the material equalization tube (13) and fixedly connected to the output end of the drive motor (14), a plurality of material distribution plates (16) fixedly connected in a ring to the outer wall of the control rod (15) and adapted to the inner wall of the material equalization tube (13), and a guide frame (17) fixed at the bottom of the material equalization tube (13).

4. The lignin production raw material screening device as described in claim 3, characterized in that, The vibration unit (3) includes a plurality of buffer springs (18) fixed in a ring array within the mounting bracket (1), a control frame (19) fixed at the other end of the plurality of buffer springs (18), and two vibration motors (20) symmetrically mounted on the control frame (19).

5. A lignin production raw material screening device as described in claim 4, characterized in that, The material discharge section (5) includes two hydraulic rods (21) symmetrically hinged to the control frame (19), a discharge pipe (22) connected to the screening tank (8), an electric push rod (23) fixed to the outer wall of the screening tank (8), and a baffle (24) fixed to the output end of the electric push rod (23) and slidably assembled in the discharge pipe (22). The baffle (24) is used to close the discharge pipe (22); The output ends of both hydraulic rods (21) are hinged to the screening tank (8).

6. The lignin production raw material screening device as described in claim 4, characterized in that, The guide part (6) includes two guide brackets (25) fixed on the control frame (19), several guide rails (26) symmetrically fixed on the assembly bracket (1), and several guide wheels (27) symmetrically fixed on the two guide brackets (25) and slidably connected to the several guide rails (26).

7. A lignin production raw material screening device as described in claim 3, characterized in that, The bottom of the cover (9) is fixedly connected to a rubber shielding ring (28) for shielding the gap between the feed inlet (11) and the feed equalization tube (13).

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