Raw material crushing and screening device for production of bio-based degradable PLA film

Abstract

The utility model discloses a bio-based degradable PLA film production raw material crushing and screening device which comprises a screening box, the upper end of the screening box is fixedly communicated with a crushing box, one side of the upper end of the screening box is fixedly provided with a first driving device, one side of the output end of the first driving device is provided with a second transmission mechanism, and the output end of the second transmission mechanism is provided with a second transmission mechanism. The input end of the second transmission mechanism is in transmission connection with the output end of the first driving device. The first driving device is started, the second transmission mechanism drives the rotating disc to rotate, the stirring rod stirs the intermittent disc to move intermittently, raw materials in the crushing box enter the discharging groove in the discharging frame due to gravity, and the raw materials are intermittently and quantitatively added between the first crushing roller and the second crushing roller along with rotation of the intermittent disc. And through cooperation of the intermittent disc and the poke rod, excessive raw materials can be prevented from being added to the first smashing roller and the second smashing roller, the number of times of raw material smashing is reduced, and the production efficiency of the bio-based degradable PLA film raw materials is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of raw material production equipment for producing bio-based degradable PLA films, in particular to a raw material crushing and screening device for producing bio-based degradable PLA films. Background Art

[0002] The main raw material for the production of bio-based degradable PLA film is lactic acid or its derivatives. Lactic acid is usually produced by fermenting renewable resources such as plant-based starches such as corn starch, cassava starch, and sugarcane juice. However, the raw materials for producing corn starch, cassava starch, and sugarcane juice need to be crushed and screened by crushing and screening equipment before being fermented into bio-based degradable PLA film raw materials.

[0003] At present, most of the bio-based degradable PLA film raw material crushing and screening devices add the plant raw materials directly into the feeding hourglass, and the raw materials enter the crushing device for crushing by their own weight. However, this method will result in too much material being added, and the excessive material will accumulate in the equipment, which may cause uneven crushing of the material, thus requiring multiple crushing and screening, affecting the production efficiency of the bio-based degradable PLA film raw materials. Utility Model Content

[0004] The utility model aims to provide a raw material crushing and screening device for producing bio-based degradable PLA film, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a raw material crushing and screening device for the production of bio-based degradable PLA film, comprising a screening box, the upper end of the screening box is fixedly connected to the crushing box, a driving device 1 is fixedly installed on one side of the upper end of the screening box, a transmission mechanism 2 is arranged on one side of the output end of the driving device 1, the input end of the transmission mechanism 2 is transmission-connected to the output end of the driving device 1, the output end of the transmission mechanism 2 is transmission-connected to a rotating disk, a toggle rod is fixedly connected to one side of the rotating disk, an intermittent disk is rotationally connected to one side of the crushing box, the inner wall of the intermittent disk is slidably connected to the outer wall of the toggle rod, a feeding rack is fixedly connected to one side of the intermittent disk, and one side of the feeding rack is rotationally connected to one side of the inner wall of the crushing box.

[0006] As a further preferred embodiment of the present technical solution, a crushing roller 1 is rotatably connected to the other side of the inner wall of the crushing box, one end of the crushing roller 1 is transmission-connected to the output end of the driving device 1, the other end of the crushing roller 1 is fixedly connected to a driving gear 1, one side of the driving gear 1 is meshed with a driven gear, and one side of the driven gear is fixedly connected to a crushing roller 2.

[0007] As a further preferred embodiment of the present technical solution, one side of the screening box is fixedly connected to a mounting platform, a driving device 2 is fixedly installed on the upper end of the mounting platform, the output end of the driving device 2 is transmission-connected to a transmission mechanism 1, the output end of the transmission mechanism 1 is transmission-connected to a special-shaped disk, one side of the special-shaped disk is rotatably connected to a pull rod, one end of the pull rod is rotatably connected to a screening frame, and both sides of the screening frame are slidably connected to the inner wall of the screening box.

[0008] As a further preferred embodiment of the technical solution, a slope is fixedly connected to the inner bottom of the screening box, and a discharge tray is fixedly connected to the other side of the screening box.

[0009] As a further preferred embodiment of the present technical solution, a driving rack is fixedly connected to the inner wall of the screening box, a driving gear 2 is meshed on one side of the driving rack, a beating roller is fixedly connected to one side of the driving gear 2, a rubber sheet is fixedly connected to the outer wall of the beating roller, and the beating roller is located below the screening frame.

[0010] As a further preferred embodiment of the present technical solution, drive devices three are fixedly installed on both sides of the screening box, the output end of the drive device three is transmission-connected with a threaded rod, the outer side wall of the threaded rod is threadedly connected with a T-shaped sliding block, one side of the T-shaped sliding block is rotatably connected with a rotating shaft, and one end of the rotating shaft is fixedly connected to one side of the driving gear two.

[0011] The utility model provides a raw material crushing and screening device for the production of bio-based degradable PLA film, which has the following beneficial effects:

[0012] (1) The utility model starts the driving device 1, so that the transmission mechanism 2 drives the rotating disk to rotate, and the toggle lever toggle the intermittent disk to perform intermittent movement. The raw materials in the crushing box enter the discharge trough in the discharge rack due to gravity. As the intermittent disk rotates, the raw materials are intermittently added between the crushing roller 1 and the crushing roller 2 in a quantitative manner. The cooperation between the intermittent disk and the toggle lever can prevent the raw materials from being added too much to the crushing roller 1 and the crushing roller 2, thereby reducing the number of times the raw materials are crushed and improving the production efficiency of bio-based degradable PLA film raw materials.

[0013] (2) The utility model turns on the driving device 3, and the T-shaped sliding block moves along the driving rack, driving the driving rack under the screening frame to move. The design of the crushing roller 2 and the driving rack can make the beating roller rotate, so that the rubber sheet beats the screening frame, thereby reducing the risk of part of the raw materials being stuck in the screening mesh when the screening frame is used, thereby improving the screening efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of the cross-sectional structure of the screening box in the utility model;

[0016] Figure 3 It is a schematic diagram of the cross-sectional structure of the crushing box in the utility model;

[0017] Figure 4 This is a schematic diagram of the connection relationship between the beating roller and the T-shaped sliding block in the utility model;

[0018] In the figure: 1. screening box; 2. crushing box; 3. driving device 1; 4. mounting table; 5. driving device 2; 6. transmission mechanism 1; 7. pulling rod; 8. driving device 3; 9. threaded rod; 10. T-shaped sliding block; 11. screening frame; 12. special-shaped disk; 13. ramp; 14. discharging plate; 15. driving rack; 16. crushing roller 1; 17. crushing roller 2; 18. driving gear 1; 19. driven gear; 20. transmission mechanism 2; 21. rotating plate; 22. intermittent plate; 23. toggle rod; 24. unloading rack; 25. beating roller; 26. rubber sheet; 27. driving gear 2; 28. rotating shaft. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] The utility model provides a technical solution: Figure 1 - Figure 4 As shown, in this embodiment, a raw material crushing and screening device for producing bio-based degradable PLA film includes a screening box 1, the upper end of the screening box 1 is fixedly connected to a crushing box 2, a driving device 3 is fixedly installed on one side of the upper end of the screening box 1, a transmission mechanism 20 is arranged on one side of the output end of the driving device 3, the input end of the transmission mechanism 20 is transmission-connected to the output end of the driving device 3, the output end of the transmission mechanism 20 is transmission-connected to a rotating disk 21, one side of the rotating disk 21 is fixedly connected to a toggle rod 23, one side of the crushing box 2 is rotationally connected to an intermittent disk 22, the inner wall of the intermittent disk 22 is slidably connected to the outer wall of the toggle rod 23, and one side of the intermittent disk 22 A feed rack 24 is fixedly connected, and one side of the feed rack 24 is rotatably connected to one side of the inner wall of the crushing box 2. By turning on the driving device 13, the transmission mechanism 20 drives the rotating disk 21 to rotate, and the toggle rod 23 toggle the intermittent disk 22 to perform intermittent movement. The raw materials in the crushing box 2 enter the feed trough in the feed rack 24 due to gravity. As the intermittent disk 22 rotates, the raw materials are intermittently added between the crushing roller 16 and the crushing roller 2 17 in a quantitative manner. The cooperation between the intermittent disk 22 and the toggle rod 23 can prevent excessive addition of raw materials to the crushing roller 16 and the crushing roller 2 17, thereby reducing the number of times the raw materials are crushed and improving the production efficiency of bio-based degradable PLA film raw materials.

[0021] like Figure 3 As shown, a crushing roller 16 is rotatably connected to the other side of the inner wall of the crushing box 2, one end of the crushing roller 16 is transmission-connected to the output end of the driving device 3, the other end of the crushing roller 16 is fixedly connected to a driving gear 18, one side of the driving gear 18 is meshed with a driven gear 19, and one side of the driven gear 19 is fixedly connected to a crushing roller 2 17. When the driving device 3 is turned on, the output end of the driving device 3 drives the crushing roller 16 to rotate, the driving gear 18 cooperates with the driven gear 19, so that the crushing roller 16 and the crushing roller 2 17 crush the raw materials.

[0022] like Figure 1 and Figure 2 As shown, one side of the screening box 1 is fixedly connected to a mounting platform 4, an upper end of the mounting platform 4 is fixedly installed with a driving device 2 5, an output end of the driving device 2 5 is transmission-connected to a transmission mechanism 1 6, an output end of the transmission mechanism 1 6 is transmission-connected to a special-shaped disc 12, one side of the special-shaped disc 12 is rotationally connected to a pull rod 7, one end of the pull rod 7 is rotationally connected to a screening frame 11, both sides of the screening frame 11 are slidingly connected to the inner wall of the screening box 1, the special-shaped disc 12 is rotated by turning on the driving device 2 5, and the pull rod 7 is reciprocated to make the screening frame 11 screen the raw materials.

[0023] like Figure 2 As shown, a slope 13 is fixedly connected to the inner bottom of the screening box 1 , and a discharge tray 14 is fixedly connected to the other side of the screening box 1 , through which the screened raw materials can be quickly discharged.

[0024] like Figure 2 and Figure 4 As shown, the inner wall of the screening box 1 is fixedly connected with a driving rack 15, one side of the driving rack 15 is meshed with a driving gear 27, one side of the driving gear 27 is fixedly connected with a beating roller 25, the outer side wall of the beating roller 25 is fixedly connected with a rubber sheet 26, the beating roller 25 is located below the screening frame 11, and by moving the driving gear 27, the driving gear 27 cooperates with the driving rack 15 to make the beating roller 25 rotate, and the rubber sheet 26 beats the bottom of the screening frame 11 to prevent part of the raw materials from being stuck in the screening mesh and affecting the screening effect of the screening frame 11.

[0025] like Figure 1 , Figure 2 and Figure 4As shown, driving devices three 8 are fixedly installed on both sides of the screening box 1, and the output end of the driving device three 8 is transmission-connected with a threaded rod 9, and the outer wall of the threaded rod 9 is threadedly connected with a T-shaped sliding block 10, and one side of the T-shaped sliding block 10 is rotatably connected with a rotating shaft 28, and one end of the rotating shaft 28 is fixedly connected to one side of the driving gear two 27. By turning on the driving device three 8, the T-shaped sliding block 10 is moved along the driving rack 15, so that the beating roller 25 rotates in the screening box 1, wherein a through groove is opened on one side of the screening box 1, and the outer wall of the rotating shaft 28 slides in the through groove.

[0026] The utility model provides a raw material crushing and screening device for the production of bio-based degradable PLA film, and the specific working principle is as follows:

[0027] When the bio-based degradable PLA film raw material is crushed and screened, the raw material is first placed in the crushing box 2, and the driving device 13 is turned on to make the transmission mechanism 20 drive the rotating disk 21 to rotate, and the toggle rod 23 toggle the intermittent disk 22 to perform intermittent movement. The raw material in the crushing box 2 enters the unloading trough in the unloading rack 24 due to gravity. As the intermittent disk 22 rotates, the raw material is intermittently added between the crushing roller 16 and the crushing roller 2 17 in a quantitative manner. While the rotating disk 21 rotates, the driving gear 18 cooperates with the driven gear 19 to make the crushing roller 16 and the crushing roller 2 17 crush the raw material. It falls into the screening box 1, and the driving device 2 5 is turned on to make the screening frame 11 move back and forth in the screening box 1, so as to screen the raw materials on the screening frame 11. While screening, the driving device 3 8 is turned on, and the T-shaped sliding block 10 moves along the driving rack 15, driving the beating roller 25 under the screening frame 11 to move. The design of the crushing roller 2 17 and the driving rack 15 can make the beating roller 25 rotate, so that the rubber sheet 26 beats the screening frame 11, which reduces the risk of part of the raw materials being stuck in the screening mesh when using the screening frame 11. The screened raw materials slide out through the slope 13, so that the raw material crushing and screening are completed.

[0028] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A raw material crushing and screening device for producing bio-based degradable PLA film, comprising a screening box (1), characterized in that: The upper end of the screening box (1) is fixedly connected to the crushing box (2); a driving device (3) is fixedly installed on one side of the upper end of the screening box (1); a transmission mechanism (20) is arranged on one side of the output end of the driving device (3); the input end of the transmission mechanism (20) is transmission-connected to the output end of the driving device (3); the output end of the transmission mechanism (20) is transmission-connected to a rotating disk (21); a toggle rod (23) is fixedly connected to one side of the rotating disk (21); an intermittent disk (22) is rotationally connected to one side of the crushing box (2); the inner wall of the intermittent disk (22) is slidably connected to the outer wall of the toggle rod (23); a material discharging rack (24) is fixedly connected to one side of the intermittent disk (22); and one side of the material discharging rack (24) is rotationally connected to one side of the inner wall of the crushing box (2).

2. The raw material crushing and screening device for producing bio-based degradable PLA film according to claim 1, characterized in that: A crushing roller (16) is rotatably connected to the other side of the inner wall of the crushing box (2); one end of the crushing roller (16) is transmission-connected to the output end of the driving device (3); the other end of the crushing roller (16) is fixedly connected to a driving gear (18); one side of the driving gear (18) is meshed with a driven gear (19); one side of the driven gear (19) is fixedly connected to a crushing roller (17).

3. The raw material crushing and screening device for producing bio-based degradable PLA film according to claim 1, characterized in that: One side of the screening box (1) is fixedly connected to a mounting platform (4), an upper end of the mounting platform (4) is fixedly mounted with a second driving device (5), an output end of the second driving device (5) is drivingly connected to a first transmission mechanism (6), an output end of the first transmission mechanism (6) is drivingly connected to a special-shaped disc (12), one side of the special-shaped disc (12) is rotatably connected to a pulling rod (7), one end of the pulling rod (7) is rotatably connected to a screening frame (11), and two sides of the screening frame (11) are slidably connected to the inner wall of the screening box (1).

4. The raw material crushing and screening device for producing bio-based degradable PLA film according to claim 1, characterized in that: The inner bottom of the screening box (1) is fixedly connected to a slope (13), and the other side of the screening box (1) is fixedly connected to a discharge tray (14).

5. The raw material crushing and screening device for producing bio-based degradable PLA film according to claim 4, characterized in that: The inner wall of the screening box (1) is fixedly connected with a driving rack (15), one side of the driving rack (15) is meshed with a driving gear 2 (27), one side of the driving gear 2 (27) is fixedly connected with a beating roller (25), the outer side wall of the beating roller (25) is fixedly connected with a rubber sheet (26), and the beating roller (25) is located below the screening frame (11).

6. The raw material crushing and screening device for producing bio-based degradable PLA film according to claim 5, characterized in that: A driving device three (8) is fixedly installed on both sides of the screening box (1); the output end of the driving device three (8) is transmission-connected with a threaded rod (9); the outer wall of the threaded rod (9) is threadedly connected with a T-shaped sliding block (10); one side of the T-shaped sliding block (10) is rotationally connected with a rotating shaft (28); one end of the rotating shaft (28) is fixedly connected to one side of the driving gear two (27).

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