Concrete sand-gravel material screening and conveying device

Abstract

The utility model relates to the technical field related to concrete production, in particular to a concrete gravel material screening and conveying device which comprises a bottom plate. Side plates are fixedly connected to the two sides of the bottom plate, a screen drum is arranged between the two side plates, a plurality of screen holes are evenly formed in the screen drum, and connecting plates are rotationally connected to the outer surfaces of the two ends of the screen drum. Under the matching action of the bottom plate, the side plate, the screen drum, the screen holes, the connecting plate, the conveying mechanism and the feeding mechanism, concrete sand and gravel are automatically conveyed into the device, sand and gravel are screened through the device, the screened sand and gravel are conveyed respectively, the labor amount of workers is reduced, and the working efficiency is improved. The problems that an existing concrete sand and gravel material screening and conveying device does not have the function of conveying screened sand and gravel separately, so that workers need to carry the screened sand and gravel, and the labor amount of the workers is increased are solved.

Description

Technical Field

[0001] The utility model relates to the technical field related to concrete production, and specifically relates to a concrete sand and gravel screening and conveying device. Background Art

[0002] Concrete refers to the general term of engineering composite materials that cementitious materials bond aggregates into a whole. Usually, the term "concrete" refers to cement concrete made of cement as the cementitious material, sand and stone as aggregates, and water (which may contain additives and admixtures) in a certain proportion and stirred. It is widely used in civil engineering. Before concrete production, a screening device needs to be used for filtering and screening.

[0003] The utility model patent with the publication number of CN219965518 discloses a raw material screening device for concrete production and processing, belonging to the technical field related to concrete production. To solve the problem that the existing technology does not have the function of repeatedly screening sand and gravel, resulting in the sand and gravel can only pass through the filter screen once, and the screening effect is poor. It includes two support plates. The top of the support plate is fixedly installed with a screening box. The opposite surfaces of the two support plates are movably installed with a conveyor belt. The top of the screening box is movably installed with a driving mechanism. The inner bottom wall of the screening box is fixedly installed with a vibration motor. The output shaft of the vibration motor is fixedly connected with a vibration shaft. The top of the vibration shaft is fixedly installed with a hinge block. The right side of the hinge block is hinged with a screen plate. This raw material screening device for concrete production and processing, by setting the driving mechanism, makes the screening device have the function of repeated screening when in use, can make the sand and gravel be screened more carefully, and avoid that when screening the sand and gravel, due to the influence of the feeding speed, during the screening process, some fine sand is not screened by the filter screen and is mixed into the coarse sand and discharged, resulting in a poor screening effect. The setting of the driving mechanism effectively solves this problem.

[0004] However, the above patent still has deficiencies: Although this patent can screen concrete sand and gravel, it does not have the function of separately conveying the screened sand particles and crushed stones, resulting in workers needing to carry the screened sand particles and crushed stones, increasing the labor intensity of workers. Content of the Utility Model

[0005] In order to make up for the above deficiencies, the utility model provides a concrete sand and gravel screening and conveying device to solve the problem that the existing concrete sand and gravel screening and conveying device does not have the function of separately conveying the screened sand particles and crushed stones, resulting in workers needing to carry the screened sand particles and crushed stones, increasing the labor intensity of workers as mentioned in the above background art.

[0006] The technical solution of the utility model is as follows:

[0007] A kind of screening and conveying device for concrete sand and gravel materials, comprising: a bottom plate; both sides of the bottom plate are fixedly connected with side plates, and a sieve cylinder is arranged between the two side plates. A number of sieve holes are evenly arranged inside the sieve cylinder. The outer surfaces of both ends of the sieve cylinder are rotatably connected with connecting plates, and the connecting plates are fixedly connected with the side plates; a conveying mechanism for conveying the screened sand grains is arranged at the bottom of the sieve cylinder; a feeding mechanism for conveying the sand and gravel materials into the sieve cylinder is arranged on one side of the sieve cylinder.

[0008] Preferably, the conveying mechanism comprises: a first conveyor belt is arranged at the bottom of the sieve cylinder. Both sides inside the first conveyor belt are provided with first conveyor rollers, and first rotating shafts are fixedly connected to the centers of the first conveyor rollers. One end of each of the first rotating shafts is rotatably connected with the side plate, and both ends of the other first rotating shaft penetrate through the side plate and extend to the outside of the side plate; a motor is fixedly connected to one of the side plates near the first rotating shaft, and the output end of the motor is fixedly connected with the first rotating shaft; a linkage mechanism for controlling the synchronous rotation of the sieve cylinder is arranged on the outer surface of one end of the first rotating shaft located outside the side plate.

[0009] Preferably, the linkage mechanism comprises: a first synchronous pulley is fixedly connected to the outer surface of one end of the first rotating shaft located outside the side plate. The first synchronous pulley is connected with a second synchronous pulley through a first synchronous belt, and a second rotating shaft is fixedly connected to the center of the second synchronous pulley; one end of the second rotating shaft away from the second synchronous pulley penetrates through the support frame and extends to the first gear. The support frame is fixedly connected with the side plate. A second gear is meshed with the top of the first gear, and a third rotating shaft is fixedly connected to the center of the second gear. One end of the third rotating shaft is rotatably connected with the support frame, and a first bevel gear is fixedly connected to the end of the third rotating shaft away from the support frame. A second bevel gear is meshed with one side of the first bevel gear, and the second bevel gear is fixed on the outer surface of the sieve cylinder.

[0010] Preferably, the feeding mechanism comprises: a second conveyor belt is arranged on one side of the sieve cylinder. Suspension plates are arranged on both sides of the second conveyor belt. Both ends inside the second conveyor belt are provided with second conveyor rollers, and fourth rotating shafts are fixedly connected to the centers of the second conveyor rollers. Both ends of the fourth rotating shaft are rotatably connected with the suspension plates; one end of one of the fourth rotating shafts penetrates through the suspension plate and extends to the third synchronous pulley. The third synchronous pulley is connected with a fourth synchronous pulley through a second synchronous belt, and the fourth synchronous pulley is fixed on the outer surface of the first rotating shaft.

[0011] Preferably, L-shaped support frames are fixedly connected to one side of the suspension plate away from the second conveyor belt. Two connecting rods are arranged inside each L-shaped support frame. The two ends of each connecting rod are fixedly connected to the suspension plate and the L-shaped support frame respectively. Structural plates are arranged at the bottoms of the L-shaped support frames, and the structural plates are fixedly connected to the L-shaped support frames and the side plates respectively.

[0012] Preferably, a suitable dragon blade is arranged inside the screening cylinder, and the dragon blade is fixedly connected to the screening cylinder.

[0013] Preferably, universal wheels with braking functions are arranged at the four corners of the bottom of the bottom plate, and the universal wheels are fixedly connected to the bottom plate.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] First, through the cooperation of the bottom plate, side plates, screening cylinder, screening holes, connecting plate, conveying mechanism and feeding mechanism of the present utility model, the device automatically conveys concrete sand and gravel materials into the device, screens the sand grains and crushed stones by the device, and conveys the screened sand grains and crushed stones separately, reducing the labor intensity of workers and solving the problem that the existing concrete sand and gravel screening and transmission device does not have the function of separately conveying the screened sand grains and crushed stones, resulting in the need for workers to carry the screened sand grains and crushed stones, increasing the labor intensity of workers.

[0016] Second, through the cooperation of the bottom plate, side plates, screening cylinder, screening holes, connecting plate, conveying mechanism and feeding mechanism of the present utility model, the concrete sand and gravel materials can be continuously tumbled and conveyed inside the screening cylinder, and then the sand grains inside the concrete sand and gravel materials are screened through the screening holes, improving the screening effect of the concrete sand and gravel materials and thus improving the practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of a concrete sand and gravel screening and transmission device of the present utility model;

[0018] Figure 2 is a side view sectional structural schematic diagram of a concrete sand and gravel screening and transmission device of the present utility model;

[0019] Figure 3 is a structural schematic diagram of the conveying mechanism of the present utility model;

[0020] Figure 4 is a structural schematic diagram of the linkage mechanism of the present utility model;

[0021] Figure 5 is a structural schematic diagram of the feeding mechanism of the present utility model.

[0022] In the figure:

[0023] 1. Bottom plate; 2. Side plate; 3. Sieve cylinder; 4. Connecting plate; 5. Conveying mechanism; 6. Feeding mechanism; 7. First conveyor belt; 8. First conveyor roller; 9. First rotating shaft; 10. Motor; 11. Linkage mechanism; 12. First synchronous pulley; 13. First synchronous belt; 14. Second synchronous pulley; 15. Second rotating shaft; 16. Support frame; 17. First gear; 18. Second gear; 19. Third rotating shaft; 20. First bevel gear; 21. Second bevel gear; 22. Second conveyor belt; 23. Suspension plate; 24. Second conveyor roller; 25. Fourth rotating shaft; 26. Third synchronous pulley; 27. Second synchronous belt; 28. Fourth synchronous pulley; 29. L-shaped support frame; 30. Connecting rod; 31. Structural plate; 32. Screw blade; 33. Universal wheel; 34. Sieve holes. Detailed implementation manners

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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 the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figures 1 to 5 , the above technical solutions of the present invention will be described in detail through the following embodiments:

[0026] A concrete sand and gravel screening and conveying device includes: a bottom plate 1; side plates 2 are fixedly connected to both sides of the bottom plate 1, and a screening cylinder 3 is arranged between the two side plates 2. A number of screening holes 34 are evenly opened inside the screening cylinder 3. The outer surfaces of both ends of the screening cylinder 3 are rotatably connected with connecting plates 4, and the connecting plates 4 are fixedly connected to the side plates 2; a conveying mechanism 5 for conveying the screened sand grains is arranged at the bottom of the screening cylinder 3; a feeding mechanism 6 for conveying the sand and gravel to the inside of the screening cylinder 3 is arranged on one side of the screening cylinder 3. When the conveying mechanism 5 is started, while the conveying mechanism 5 is running, it drives the feeding mechanism 6 and the screening cylinder 3. While the feeding mechanism 6 conveys the concrete sand and gravel to the inside of the screening cylinder 3, the screening cylinder 3 rotates self by the cooperation of the connecting plates 4. While the screening cylinder 3 rotates self, it drives the concrete sand and gravel to continuously tumble. While the concrete sand and gravel tumbles, the sand grains inside fall onto the conveying mechanism 5 through the screening holes 34 due to their smaller volume, so that the screening cylinder 3 conveys the crushed stones, and the conveying mechanism 5 conveys the sand grains, enabling the device to automatically convey the concrete sand and gravel to the inside of the device, screening the sand grains and crushed stones by the device, and respectively conveying the screened sand grains and crushed stones, reducing the labor intensity of workers, and solving the problem that the existing concrete sand and gravel screening and conveying device does not have the function of separately conveying the screened sand grains and crushed stones, resulting in the need for workers to carry the screened sand grains and crushed stones, increasing the labor intensity of workers.

[0027] As Figure 3 shown, the conveying mechanism 5 includes: a first conveyor belt 7 is arranged at the bottom of the screening cylinder 3. Both sides inside the first conveyor belt 7 are provided with first conveyor rollers 8. First rotating shafts 9 are fixedly connected to the centers of the first conveyor rollers 8. One of the first rotating shafts 9 is rotatably connected to the side plate 2 at both ends respectively, and both ends of the other first rotating shaft 9 penetrate through the side plate 2 and extend to the outside of the side plate 2; a motor 10 is fixedly connected to one side plate 2 near the first rotating shaft 9, and the output end of the motor 10 is fixedly connected to the first rotating shaft 9; a linkage mechanism 11 for controlling the synchronous rotation of the screening cylinder 3 is arranged on the outer surface of one end of the first rotating shaft 9 located outside the side plate 2. When the output end of the motor 10 is started to drive one of the first rotating shafts 9, the first rotating shaft 9 drives the first conveyor roller 8, and the first conveyor roller 8 drives the first conveyor belt 7 through the cooperation of the first rotating shaft 9 on the other side and the first conveyor roller 8, so that the first conveyor belt 7 conveys the sand grains falling from the screening cylinder 3.

[0028] As Figure 4As shown in the figure, the linkage mechanism 11 includes: A first synchronous wheel 12 is fixedly connected to the outer surface of one end of the first rotating shaft 9 located outside the side plate 2. The first synchronous wheel 12 is connected to a second synchronous wheel 14 through a first synchronous belt 13. A second rotating shaft 15 is fixedly connected to the center of the second synchronous wheel 14. One end of the second rotating shaft 15 away from the second synchronous wheel 14 penetrates through the support frame 16 and extends to the first gear 17. The support frame 16 is fixedly connected to the side plate 2. A second gear 18 is engaged with the top of the first gear 17. A third rotating shaft 19 is fixedly connected to the center of the second gear 18. One end of the third rotating shaft 19 is rotatably connected to the support frame 16. The end of the third rotating shaft 19 away from the support frame 16 is fixedly connected to a first bevel gear 20. A second bevel gear 21 is engaged with one side of the first bevel gear 20. The second bevel gear 21 is fixed to the outer surface of the screening cylinder 3. When the first rotating shaft 9 rotates, it drives the first synchronous wheel 12. The first synchronous wheel 12 drives the second synchronous wheel 14 through the first synchronous belt 13. When the second synchronous wheel 14 rotates, it drives the second rotating shaft 15. The second rotating shaft 15 drives the first gear 17. The first gear 17 drives the second gear 18. The second gear 18 drives the third rotating shaft 19. The third rotating shaft 19 drives the first bevel gear 20. When the first bevel gear 20 rotates, it drives the second bevel gear 21, so that the second bevel gear 21 drives the screening cylinder 3 to rotate self - rotatably.

[0029] As Figure 2 and Figure 5 shown in the figure, the feeding mechanism 6 includes: A second conveyor belt 22 is arranged on one side of the screening cylinder 3. Suspension plates 23 are arranged on both sides of the second conveyor belt 22. Second conveyor rollers 24 are arranged at both ends inside the second conveyor belt 22. A fourth rotating shaft 25 is fixedly connected to the center of the second conveyor roller 24. Both ends of the fourth rotating shaft 25 are rotatably connected to the suspension plates 23. One end of one of the fourth rotating shafts 25 penetrates through the suspension plate 23 and extends to the third synchronous wheel 26. The third synchronous wheel 26 is connected to a fourth synchronous wheel 28 through a second synchronous belt 27. The fourth synchronous wheel 28 is fixed to the outer surface of the first rotating shaft 9. When the first rotating shaft 9 rotates, it drives the fourth synchronous wheel 28. The fourth synchronous wheel 28 drives the third synchronous wheel 26 through the second synchronous belt 27. The third synchronous wheel 26 drives the fourth rotating shaft 25. The fourth rotating shaft 25 drives the second conveyor roller 24. The second conveyor roller 24 drives the second conveyor belt 22 to convey the concrete sand and gravel between the two suspension plates 23 through the cooperation of the fourth rotating shaft 25 on the other side and the second conveyor roller 24, so that the device automatically conveys the concrete sand and gravel into the interior of the screening cylinder 3.

[0030] As Figure 5As shown in the figure, L-shaped support frames 29 are fixedly connected to one side of the suspension plates 23 away from the second conveyor belt 22. Two connecting rods 30 are arranged inside each L-shaped support frame 29. The two ends of the connecting rod 30 are fixedly connected to the suspension plate 23 and the L-shaped support frame 29 respectively. Structural plates 31 are arranged at the bottoms of the L-shaped support frames 29. The structural plates 31 are fixedly connected to the L-shaped support frames 29 and the side plates 2 respectively, which can support the two suspension plates 23, so that one end of the two suspension plates 23 is located inside the screening cylinder 3.

[0031] As Figure 2 shown in the figure, a spiral blade 32 adapted to the inside of the screening cylinder 3 is arranged inside the screening cylinder 3. The spiral blade 32 is fixedly connected to the screening cylinder 3. When the screening cylinder rotates, it drives the spiral blade. While the spiral blade 32 and the screening cylinder 3 rotate, the concrete sand and gravel inside the screening cylinder 3 are tumbled and conveyed.

[0032] As Figure 1 and Figure 2 shown in the figure, universal wheels 33 with braking functions are arranged at the four corners of the bottom of the bottom plate 1. The universal wheels 33 are fixedly connected to the bottom plate 1, which is convenient for users to move and fix the device.

[0033] Working principle: The output end of the starting motor 10 drives one of the first rotating shafts 9. The first rotating shaft 9 drives the first conveying roller 8. The first conveying roller 8 drives the first conveyor belt 7 through the cooperation of the first rotating shaft 9 on the other side and the first conveying roller 8, so that the first conveyor belt 7 conveys the sand grains falling on the sieve drum 3. While the first rotating shaft 9 rotates, it drives the first synchronous wheel 12 and the fourth synchronous wheel 28. The first synchronous wheel 12 drives the second synchronous wheel 14 through the first synchronous belt 13. While the second synchronous wheel 14 rotates, it drives the second rotating shaft 15. The second rotating shaft 15 drives the first gear 17. The first gear 17 drives the second gear 18. The second gear 18 drives the third rotating shaft 19. The third rotating shaft 19 drives the first bevel gear 20. While the first bevel gear 20 rotates, it drives the second bevel gear 21, so that the second bevel gear 21 drives the sieve drum 3 to rotate. The fourth synchronous wheel 28 drives the third synchronous wheel 26 through the second synchronous belt 27. The third synchronous wheel 26 drives the fourth rotating shaft 25. The fourth rotating shaft 25 drives the second conveying roller 24. The second conveying roller 24 drives the second conveyor belt 22 to convey the concrete sand and gravel between the two floating plates 23 through the cooperation of the fourth rotating shaft 25 on the other side and the second conveying roller 24. Furthermore, the device automatically conveys the concrete sand and gravel into the interior of the sieve drum 3, and the device automatically conveys the concrete sand and gravel into the interior of the device. The device screens the sand grains and crushed stones, and conveys the screened sand grains and crushed stones separately, reducing the labor intensity of workers. It solves the problem that the existing concrete sand and gravel screening and transmission device does not have the function of separately conveying the screened sand grains and crushed stones, resulting in the need for workers to carry the screened sand grains and crushed stones, increasing the labor intensity of workers.

[0034] While the sieve drum 3 rotates, it drives the dragon blade. While the dragon blade 32 and the sieve drum 3 rotate, they tumble and convey the concrete sand and gravel inside the sieve drum 3. While the concrete sand and gravel tumbles and conveys inside the sieve drum 3, the sand grains inside, due to their smaller volume, fall through the sieve holes 34 onto the first conveyor belt 7, while the crushed stones, due to their larger volume, remain inside the sieve drum 3. The dragon blade 32 conveys the crushed stones while rotating, so that the cooperation of the first conveyor belt 7 and the dragon blade 32 conveys the sand grains and crushed stones to both sides of the device, enabling the concrete sand and gravel to continuously tumble and convey inside the sieve drum 3, and then screening the sand grains inside the concrete sand and gravel through the sieve holes 34, improving the screening effect of the concrete sand and gravel, and further improving the practicability.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A concrete sand and gravel screening and transmission device, comprising: Bottom plate (1); The invention is characterized in that both sides of the bottom plate (1) are fixedly connected to side plates (2), a sieve drum (3) is provided between the two side plates (2), a plurality of sieve holes (34) are evenly opened inside the sieve drum (3), and the outer surfaces of both ends of the sieve drum (3) are rotatably connected to connecting plates (4), and the connecting plates (4) are fixedly connected to the side plates (2); A conveying mechanism (5) for conveying the screened sand particles is provided at the bottom of the screen drum (3); A feeding mechanism (6) for conveying sand and gravel into the interior of the sieve drum (3) is provided on one side of the sieve drum (3); The conveying mechanism (5) comprises: a first conveyor belt (7) is provided at the bottom of the screen drum (3), first conveyor rollers (8) are provided on both sides of the interior of the first conveyor belt (7), and a first rotating shaft (9) is fixedly connected at the center of the circle of the first conveyor roller (8), wherein both ends of the first rotating shaft (9) are respectively rotatably connected to the side plate (2), and both ends of the other first rotating shaft (9) pass through the side plate (2) and extend to the outside of the side plate (2); A motor (10) is fixedly connected to one of the side plates (2) near the first rotating shaft (9), and an output end of the motor (10) is fixedly connected to the first rotating shaft (9); The first rotating shaft (9) is located on the outer surface of one end of the outer side of the side plate (2), and is provided with a linkage mechanism (11) for controlling the synchronous rotation of the screen drum (3).

2. A concrete sand and gravel screening and conveying device according to claim 1, characterized in that: The linkage mechanism (11) comprises: The first rotating shaft (9) is fixedly connected to the outer surface of one end of the outer side of the side plate (2) with a first synchronous wheel (12), the first synchronous wheel (12) is connected to the second synchronous wheel (14) via a first synchronous belt (13), and the center of the second synchronous wheel (14) is fixedly connected to the second rotating shaft (15); One end of the second rotating shaft (15) away from the second synchronous wheel (14) passes through the support frame (16) and extends to the first gear (17). The support frame (16) is fixedly connected to the side plate (2). The top of the first gear (17) is meshed with the second gear (18). The center of the second gear (18) is fixedly connected to the third rotating shaft (19). One end of the third rotating shaft (19) is rotatably connected to the support frame (16). One end of the third rotating shaft (19) away from the support frame (16) is fixedly connected to the first bevel gear (20). One side of the first bevel gear (20) is meshed with the second bevel gear (21). The second bevel gear (21) is fixed to the outer surface of the screen drum (3).

3. A concrete sand and gravel screening and conveying device according to claim 2, characterized in that: The feeding mechanism (6) comprises: A second conveyor belt (22) is provided on one side of the screen drum (3), and suspension plates (23) are provided on both sides of the second conveyor belt (22). Second conveyor rollers (24) are provided at both ends of the interior of the second conveyor belt (22), and a fourth rotating shaft (25) is fixedly connected to the center of the second conveyor roller (24), and both ends of the fourth rotating shaft (25) are rotatably connected to the suspension plates (23); One end of the fourth rotating shaft (25) passes through the suspension plate (23) and extends to the third synchronous wheel (26). The third synchronous wheel (26) is connected to the fourth synchronous wheel (28) via a second synchronous belt (27). The fourth synchronous wheel (28) is fixed to the outer surface of the first rotating shaft (9).

4. A concrete sand and gravel screening and conveying device according to claim 3, characterized in that: The side of the suspension plate (23) away from the second conveyor belt (22) is fixedly connected to an L-shaped support frame (29), and two connecting rods (30) are provided inside the L-shaped support frame (29). The two ends of the connecting rods (30) are respectively fixedly connected to the suspension plate (23) and the L-shaped support frame (29). The bottom of the L-shaped support frame (29) is provided with a structural plate (31), and the structural plate (31) is respectively fixedly connected to the L-shaped support frame (29) and the side plate (2).

5. The concrete sand and gravel screening and conveying device according to claim 1, characterized in that: A matching dragon blade (32) is provided inside the sieve cylinder (3), and the dragon blade (32) is fixedly connected to the sieve cylinder (3).

6. The concrete sand and gravel screening and conveying device according to claim 1, characterized in that: Universal wheels (33) with a braking function are provided at the four corners of the bottom of the base plate (1), and the universal wheels (33) are fixedly connected to the base plate (1).

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