A grain grinding device for preventing sticking

Abstract

This utility model relates to the field of grain processing technology, specifically to a grain processing crushing device for preventing sticking. It includes a crushing box with a feeding hopper fixedly connected to its top center. A crushing mechanism is located inside the crushing box, near the lower part of the feeding hopper. A transmission box is fixedly connected to the outside of one side of the crushing box, and a drive mechanism is located inside the transmission box, cooperating with the crushing mechanism. A scraping mechanism is located inside the crushing box, outside the crushing mechanism. This utility model, by employing two crushing rollers (one and two) in an inverted triangular arrangement, effectively avoids the problem of material being squeezed outwards due to relative reverse rotation in traditional triangular arrangements. This ensures that all material can enter the crushing gap for thorough crushing, solving the technical defect in existing technologies where some material slides down directly without being crushed.

Description

Technical Field

[0001] This utility model relates to the field of grain processing technology, specifically to a grain crushing device for preventing sticking. Background Technology

[0002] During grain processing, grain crushing equipment will be used to crush and process the grain.

[0003] As disclosed in the patent announcement CN221182907U, a grain processing crushing device for preventing sticking includes a processing box, a hopper, and auxiliary components. The auxiliary components include a first crushing roller, a second crushing roller, a support, a first scraper, a first connecting rod, a first positioning cylinder, a first spring, a driving component, and a cooperating component. During processing, the first scraper, under the combined action of the first positioning cylinder, the first connecting rod, and the first spring, can always maintain sliding contact with the surface of the first crushing roller, thereby cooperating with the second crushing roller during the rotation of the first crushing roller. The beneficial effects of this invention, achieved by adopting the above technical solution, are: during grain crushing, the surface of the first crushing roller is cleaned; simultaneously, the cooperating component cleans the surface of the second crushing roller, thereby improving the anti-sticking cleaning effect.

[0004] Although the aforementioned patent sets up three crushing rollers in a triangular shape, in the triangular three-roll crushing device, if the two lower rollers adopt a left-forward and right-reverse rotation, the material can be effectively conveyed downward. However, no matter how the upper roller rotates, it will rotate in the opposite direction to at least one lower roller, causing the contact surface to generate an outward extrusion force, which causes some material to slide down from one side without being crushed. Utility Model Content

[0005] The purpose of this invention is to provide a grain crushing device that prevents sticking, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A grain crushing device for preventing sticking, comprising: A crushing box is fixedly connected to the top center of a feeding hopper, and a crushing mechanism is provided inside the crushing box and below the feeding hopper. A transmission box is fixedly connected to the outside of one side of the crushing box. The transmission box is equipped with a drive mechanism that cooperates with the crushing mechanism. A scraping mechanism is provided inside the crushing box and outside the crushing mechanism.

[0007] Preferably, the crushing mechanism includes two crushing rollers 1 arranged side by side inside the crushing box and near the bottom of the feeding hopper, and a crushing roller 2 arranged inside the crushing box and below the two crushing rollers 1. Guide baffles are symmetrically fixedly connected to both sides of the inner top wall of the crushing box, and the channel formed between the two guide baffles is connected to the feeding hopper. Preferably, the drive mechanism includes spur gears symmetrically arranged on both sides of the upper end inside the transmission box, and a motor fixedly connected to the lower middle part of the outer side of the transmission box. The two spur gears mesh, and a second synchronous pulley is coaxially fixedly connected to the outer side of the right spur gear. The output shaft of the motor is fixedly connected to a first synchronous pulley. The first and second synchronous pulleys are connected by a synchronous belt drive. The ends of the two spur gears away from the transmission box are fixedly connected to two first crushing rollers via a rotating shaft. The end of the first synchronous pulley away from the transmission box is fixedly connected to the second crushing roller via a rotating shaft. The ends of the first and second crushing rollers away from the transmission box are rotatably connected to the inner wall of the crushing box via bearings. Preferably, the scraping mechanism includes several sleeves that are horizontally and fixedly connected to the upper ends of the inner walls on both sides of the crushing box. A push rod is movably sleeved inside the sleeve. A spring is provided at the opposite end of the push rod and the sleeve. The two ends of the spring are fixedly connected to the push rod and the sleeve, respectively. An upper scraper is fixedly connected at the end of the push rod away from the sleeve. A horizontal plate is provided inside the crushing box at both the upper and lower ends of the upper scraper. The end of the horizontal plate away from the upper scraper is fixedly connected to the inner wall of the crushing box. The end of the upper scraper slides in contact with the outer periphery of the crushing roller. A vertical plate is fixedly connected to the middle of the inner bottom wall of the crushing box. A lower scraper is provided above the vertical plate. A groove is opened at the middle of the bottom end of the lower scraper to slide up and down with the vertical plate. Several springs are provided inside the groove. The upper and lower ends of the springs are fixedly connected to the lower scraper and the vertical plate, respectively. The end of the lower scraper slides in contact with the outer periphery of the crushing roller. Preferably, triangular push blocks are provided on both sides of the lower interior of the crushing box, and electric push rods are fixedly connected to the lower exterior of both sides of the crushing box. The output shaft of the electric push rod is fixedly connected to the triangular push blocks, and a discharge port is provided at the bottom of the crushing box on both sides of the vertical plate. Preferably, a PLC controller is fixedly connected to the right corner of the front of the transmission box, and the PLC controller is electrically connected to the electric push rod and the motor.

[0008] Compared with the prior art, the beneficial effects of this utility model are: This anti-sticking grain processing crushing equipment effectively avoids the problem of material being squeezed outward due to the relatively opposite rotation in the traditional triangular layout by using two crushing rollers, one and two, in a coordinated manner. This ensures that all materials can enter the crushing gap for thorough crushing and solves the technical defect in the prior art where some materials slide off directly without being crushed.

[0009] This anti-sticking grain processing crushing equipment achieves continuous scraping and cleaning of the surfaces of crushing rollers 1 and 2 by elastically pressing the upper and lower scrapers together under the action of spring 1 and spring 2 respectively, effectively preventing material sticking. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall main structure of this utility model; Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model; Figure 3 For the present utility model Figure 2 The intention behind enlarging point A in the middle; Figure 4 For the present utility model Figure 2 The intention behind enlarging point B in the middle; Figure 5 This is a schematic diagram of the second structure of the synchronous belt pulley of this utility model.

[0011] In the diagram: 1. Crushing box; 2. Feeding hopper; 3. Transmission box; 4. Crushing roller one; 5. Crushing roller two; 6. Guide baffle; 7. Spur gear; 8. Synchronous pulley two; 9. Synchronous pulley one; 10. Sleeve; 11. Push rod; 12. Spring one; 13. Horizontal plate; 14. Vertical plate; 15. Lower scraper; 16. Slide groove; 17. Spring two; 18. Triangular pusher block; 19. Electric push rod; 20. Discharge port; 21. PLC controller; 22. Upper scraper; 23. Motor. Detailed Implementation

[0012] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] like Figure 1-5 As shown, this utility model provides a technical solution: A grain processing crushing device for preventing sticking includes a crushing box 1, with a feeding hopper 2 fixedly connected to the top center. A crushing mechanism is located inside the crushing box 1, near the bottom of the feeding hopper 2. The crushing mechanism includes two crushing rollers 4 arranged side-by-side inside the crushing box 1, near the bottom of the feeding hopper 2, and a second crushing roller 5 located inside the crushing box 1, below the two crushing rollers 4. Guide baffles 6 are symmetrically fixedly connected to both sides of the inner top wall of the crushing box 1, and the channel formed between the two guide baffles 6 communicates with the feeding hopper 2. A transmission box 3 is fixedly connected to one side of the outside of the crushing box 1. A drive mechanism is located inside the transmission box 3, including spur gears 7 symmetrically arranged on both sides of the upper end inside the transmission box 3, and a drive mechanism fixedly connected to the transmission box. The motor 23 is located below the center of the outer side of the transmission box 3. Two spur gears 7 mesh. A synchronous pulley 8 is coaxially and fixedly connected to the outer side of the right spur gear 7. A synchronous pulley 9 is fixedly connected to the output shaft of the motor 23. The synchronous pulley 9 and the synchronous pulley 8 are connected by a synchronous belt drive. The ends of the two spur gears 7 away from the transmission box 3 are fixedly connected to two crushing rollers 4 via a rotating shaft. The ends of the synchronous pulley 9 away from the transmission box 3 are fixedly connected to the crushing roller 5 via a rotating shaft. The ends of the crushing rollers 4 and 5 away from the transmission box 3 are rotatably connected to the inner wall of the crushing box 1 via bearings. The drive mechanism cooperates with the crushing mechanism. A scraping mechanism is provided inside the crushing box 1 and outside the crushing mechanism. The scraping mechanism includes a material scraper that is laterally and fixedly connected to the inner walls of both sides of the crushing box 1. Several sleeves 10 are located at the upper end. A push rod 11 is movably connected inside the sleeve 10. A spring 12 is provided at the opposite end of the push rod 11 and the sleeve 10. The two ends of the spring 12 are fixedly connected to the push rod 11 and the sleeve 10, respectively. An upper scraper 22 is fixedly connected to the end of the push rod 11 away from the sleeve 10. Horizontal plates 13 are provided inside the crushing box 1, located at both the upper and lower ends of the upper scraper 22. The end of the horizontal plate 13 away from the upper scraper 22 is fixedly connected to the inner wall of the crushing box 1. The end of the upper scraper 22 slides in contact with the outer periphery of the crushing roller 4. A vertical plate 14 is fixedly connected to the middle of the inner bottom wall of the crushing box 1. A lower scraper 15 is provided above the vertical plate 14. A groove 16 is opened at the middle of the bottom end of the lower scraper 15 to slide vertically with the vertical plate 14. The inside of the chute 16 is provided with several springs 17. The upper and lower ends of the springs 17 are fixedly connected to the lower scraper 15 and the vertical plate 14, respectively. The end of the lower scraper 15 slides in contact with the outer periphery of the crushing roller 5. Triangular push blocks 18 are provided on both sides of the lower inside of the crushing box 1. Electric push rods 19 are fixedly connected to the lower outside of both sides of the crushing box 1. The output shaft of the electric push rod 19 is fixedly connected to the triangular push blocks 18. At the bottom of the crushing box 1 and on both sides of the vertical plate 14, there are discharge ports 20. A PLC controller 21 is fixedly connected to the right corner of the front of the transmission box 3. The PLC controller 21 is electrically connected to the electric push rod 19 and the motor 23. The gap between the two crushing rollers 4 is greater than the gap between the crushing roller 4 and the crushing roller 5. In this embodiment, by using two crushing rollers 4 and 5 in an inverted triangular layout, the problem of material being squeezed outward due to relative reverse rotation in the traditional triangular layout is effectively avoided, ensuring that all materials can enter the crushing gap for full crushing, thus solving the technical defect in the prior art where some materials slide down directly without being crushed.

[0014] Furthermore, by elastically pressing together the upper scraper 22 and the lower scraper 15 under the action of spring 12 and spring 27 respectively, continuous scraping and cleaning of the surfaces of crushing roller 14 and crushing roller 25 is achieved, effectively preventing material adhesion.

[0015] Working principle: After the motor 23 starts, it drives the synchronous pulley 9 to rotate, which in turn drives the synchronous pulley 8 to rotate, thereby driving the right spur gear 7 to rotate. Since the two spur gears 7 mesh with each other, the left spur gear 7 rotates synchronously in opposite directions. The two spur gears 7 drive the two crushing rollers 4 to rotate in opposite directions through the rotating shaft. At the same time, the synchronous pulley 9 drives the crushing roller 5 to rotate through the rotating shaft. The grain material enters the crushing box 1 from the feeding hopper 2, and after being guided by the guide baffle 6, it falls into the gap between the two crushing rollers 4. The relative rotation of the two crushing rollers 4 performs preliminary crushing of the material. The crushed material falls onto the surface of the crushing roller 5. Because this technical solution adopts an inverted triangle layout instead of the traditional triangular layout, the crushing roller 5 is located directly below the two crushing rollers 4. Although the crushing roller 5 and one of the crushing rollers 4 rotate in opposite directions, generating an outward squeezing force, this does not necessarily mean that the material will be crushed. However, the material will not overflow upwards because it is blocked by another crushing roller 4 at the top. At the same time, the material falls naturally under the action of gravity, ensuring that all the material can enter the crushing gap between the crushing roller 5 and the crushing roller 4 for secondary crushing. During the crushing process, the upper scraper 22 is always in close contact with the surface of the crushing roller 4 under the elastic force of the spring 12. The push rod 11 slides in the sleeve 10 to compensate for the radial runout of the crushing roller 4, thereby effectively scraping off the material adhering to the surface of the crushing roller 4 and preventing adhesion. The lower scraper 15 slides with the vertical plate 14 through the sliding groove 16 and is kept in contact with the surface of the crushing roller 5 under the elastic force of the spring 17, scraping off the residual material on the crushing roller 5 in real time. The crushed material falls to the bottom of the crushing box 1. The PLC controller 21 controls the electric push rod 19 to push the triangular pusher block 18 to reciprocate, pushing the material evenly to the lower feed port 20 for discharge.

[0016] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A grain crushing device for preventing sticking, characterized in that: include A crushing box (1) is fixedly connected to a feeding hopper (2) at the top center. A crushing mechanism is provided inside the crushing box (1) and below the feeding hopper (2). The transmission box (3) is fixedly connected to the outside of one side of the crushing box (1). The transmission box (3) is equipped with a drive mechanism inside, which cooperates with the crushing mechanism. A scraping mechanism is provided inside the crushing box (1) and outside the crushing mechanism.

2. The anti-blocking grain processing pulverizing apparatus according to claim 1, characterized in that: The crushing mechanism includes two crushing rollers (4) arranged side by side inside the crushing box (1) and below the feeding hopper (2), and a crushing roller (5) arranged inside the crushing box (1) and below the two crushing rollers (4). Guide baffles (6) are symmetrically fixedly connected to both sides of the inner top wall of the crushing box (1), and the channel formed between the two guide baffles (6) is connected to the feeding hopper (2).

3. The anti-blocking grain processing milling apparatus of claim 2, wherein: The drive mechanism includes spur gears (7) symmetrically arranged on both sides of the upper end inside the transmission box (3), and a motor (23) fixedly connected to the lower middle part of the outer side of the transmission box (3). The two spur gears (7) mesh, and a synchronous pulley (8) is coaxially fixedly connected to the outer side of the right spur gear (7). A synchronous pulley (9) is fixedly connected to the output shaft of the motor (23). The synchronous pulley (9) and the synchronous pulley (8) are connected by a synchronous belt drive. The ends of the two spur gears (7) away from the transmission box (3) are fixedly connected to the two crushing rollers (4) through a rotating shaft. The ends of the synchronous pulley (9) away from the transmission box (3) are fixedly connected to the crushing roller (5) through a rotating shaft. The ends of the crushing rollers (4) and (5) away from the transmission box (3) are rotatably connected to the inner wall of the crushing box (1) through bearings.

4. The anti-blocking grain processing pulverizing apparatus according to claim 3, characterized in that: The scraping mechanism includes several sleeves (10) that are horizontally and fixedly connected to the upper ends of the inner walls on both sides of the crushing box (1). A push rod (11) is movably sleeved inside each sleeve (10). A spring (12) is provided at one end of the push rod (11) facing the sleeve (10). Both ends of the spring (12) are fixedly connected to the push rod (11) and the sleeve (10), respectively. An upper scraper (22) is fixedly connected to one end of the push rod (11) away from the sleeve (10). A horizontal plate (13) is provided inside the crushing box (1) at both the upper and lower ends of the upper scraper (22). The horizontal plate (13) is located away from the upper scraper (22). The upper scraper (22) is fixedly connected to the inner wall of the crushing box (1). The end of the upper scraper (22) slides in contact with the outer periphery of the crushing roller (4). A vertical plate (14) is fixedly connected to the middle of the inner bottom wall of the crushing box (1). A lower scraper (15) is provided above the vertical plate (14). A groove (16) is opened at the middle of the bottom end of the lower scraper (15) to slide and cooperate with the vertical plate (14). Several springs (17) are provided inside the groove (16). The upper and lower ends of the springs (17) are fixedly connected to the lower scraper (15) and the vertical plate (14) respectively. The end of the lower scraper (15) slides in contact with the outer periphery of the crushing roller (5).

5. The anti-blocking grain processing comminution apparatus of claim 4, wherein: The lower part of the inside of the crushing box (1) is provided with a triangular pushing block (18) on both sides, and the lower part of the outside of the crushing box (1) is fixedly connected with an electric push rod (19) on both sides, the output shaft of the electric push rod (19) is fixedly connected with the triangular pushing block (18), and the bottom end of the crushing box (1) and the two sides of the vertical plate (14) are provided with a discharge port (20).

6. The anti-blocking grain processing milling apparatus of claim 5, wherein: The front right corner of the transmission box (3) is fixedly connected with a PLC controller (21), and the PLC controller (21) is electrically connected with the electric push rod (19) and the motor (23).

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