Sandstone crushing and screening integrated device for concrete processing

Abstract

The utility model provides a gravel crushing and screening integrated device for concrete processing, which relates to the technical field of concrete gravel processing and comprises a shell, the top of the shell is fixedly connected with a feed hopper, the bottom of the shell is fixedly connected with three discharge hoppers, and the inner side of the shell is provided with a rolling screening mechanism; the rolling screening mechanism comprises a positioning frame, one side of the positioning frame is fixedly connected with the inner wall of the shell, and one side of the positioning frame is rotationally connected with a screening barrel. By means of the screening holes arranged on the surface of the screening cylinder from small to large and the conical structure, multi-stage screening of gravel is completed in the rolling process, the gravel is output in a classified mode through the three discharging hoppers, efficient grading is achieved in a single process, and the screening efficiency is improved; crushed gravels are quantitatively vibrated and conveyed, so that the gravels are prevented from being excessively gathered in the screening barrel, the stable screening rate is ensured, the load of a screening mechanism is reduced, the service life is prolonged, and screening continuity is kept.

Description

Technical Field

[0001] This utility model relates to the field of concrete processing technology, and in particular to an integrated device for crushing and screening sand and gravel for concrete processing. Background Technology

[0002] Gravel, produced by crushing sand and gravel, is a common construction material in the building industry. After crushing sand and gravel, the resulting pulverized material particles vary in size. Particles exceeding a certain size need to be fed back into the crusher for secondary crushing. Most existing sand and gravel crushers do not have screening capabilities. The crushed sand and gravel particles need to be conveyed to screening equipment via a conveyor belt, and then the unqualified coarse material is sent back to the sand and gravel crusher for secondary crushing via a conveyor belt. This results in a large footprint for the entire sand and gravel crushing and screening production line.

[0003] Existing technology, patent number CN222132006U, discloses a sand and gravel crushing and screening device. This utility model's crusher directly screens the material being crushed using a set of screens. It has a compact structure, and through the lifting mechanism, different arc-shaped areas on the arc-shaped baffle can contact the screen. When the first arc-shaped surface contacts the screen, the material is screened; when the second and third arc-shaped surfaces contact the screen, coarse materials of different particle sizes are poured out from the top of the screen along the strip seams, resulting in high screening efficiency. However, existing technologies require repeated adjustments to the screen aperture during the screening of crushed sand and gravel, and there is only one discharge port, making it impossible to promptly classify and collect sand and gravel of different sizes, thus affecting the efficiency of subsequent sand and gravel processing. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide an integrated crushing and screening device for sand and gravel in concrete processing.

[0005] This utility model is achieved through the following technical solution:

[0006] An integrated crushing and screening device for concrete processing includes an outer shell. A feed hopper is fixedly connected to the top of the outer shell, and three discharge hoppers are fixedly connected to the bottom of the outer shell. A rolling screening mechanism is arranged inside the outer shell. The rolling screening mechanism includes a positioning frame, one side of which is fixedly connected to the inner wall of the outer shell. A screening cylinder is rotatably connected to one side of the positioning frame. Multiple screening holes 1, 2, and 3 are opened on the outer side of the screening cylinder. Two stirring rods are fixedly connected to one side of the screening cylinder. A positioning tube is rotatably connected to the outer side of the screening cylinder. One side of the positioning tube is fixedly connected to the inner side of the outer shell. An inclined baffle is fixedly connected to the inner side of the positioning tube. A feeding hopper is fixedly connected to the top of the positioning tube. The multiple screening holes 1, 2, and 3 are arranged in descending order of size on the outer side of the screening cylinder. A servo motor is fixedly connected to the outer side of the outer shell. The output end of the servo motor is fixedly connected to one side of the screening cylinder. The screening cylinder has a conical cross-section. A crushing and feeding mechanism is arranged outside the feed hopper.

[0007] As can be seen, in the above technical solution, the rotation of the screening cylinder allows sand and gravel to be screened in multiple stages through screening holes three, two and one, thereby improving the screening efficiency of the rolling screening mechanism.

[0008] Optionally, in one possible implementation, the crushing and feeding mechanism includes two servo motors, one side of which is fixedly connected to the outside of the feed hopper. A crushing roller is fixedly connected to the output end of the servo motor, and the outside of the crushing roller is rotatably connected to the inside of the feed hopper. Two baffles are fixedly connected to the inside of the feed hopper. A servo motor is fixedly connected to one side of the feed hopper, and a dispersing roller is fixedly connected to the output end of the servo motor. Three grooves are provided on the outside of the dispersing roller. Multiple support rods are fixedly connected to the inside of the outer shell. Support rods are slidably connected to the top of the support rods. Springs are sleeved on the outside of both support rods. A vibrating plate is fixedly connected to the top of the support rod. A guide plate is fixedly connected to one side of the vibrating plate. A vibrating motor is fixedly connected to the bottom of the vibrating plate.

[0009] As can be seen, in the above technical solution, the rotation of the dispersing roller and the three grooves allows the crushed sand and gravel to fall quantitatively onto the top of the vibrating plate, enabling the vibrating plate to maintain good vibration efficiency and allowing the sand and gravel to move downwards evenly for screening.

[0010] The beneficial effects of this utility model are:

[0011] This invention, by setting up a rolling screening mechanism, compared with the prior art, utilizes screening holes of different diameters arranged from small to large on the surface of the screening cylinder: screening hole three, screening hole two, and screening hole one. The conical shape of the screening cylinder allows the sand and gravel to be screened during the rolling process. Furthermore, three discharge hoppers are used to classify and output the screened sand and gravel. Multi-stage screening is completed in a single process, improving screening efficiency.

[0012] At the same time, by setting up a crushing and feeding mechanism, compared with the existing technology, the crushed sand and gravel can be conveyed in a quantitative manner by vibration, which avoids excessive accumulation of crushed sand and gravel inside the screening cylinder, so that the screening cylinder can maintain a better screening rate, reduce the amount of sand and gravel screened by the rolling screening mechanism at the same time, and maintain the screening continuity of the screening mechanism while extending its service life. Attached Figure Description

[0013] Figure 1 A schematic diagram of the overall structure of this utility model is shown;

[0014] Figure 2 A schematic diagram of the rear structure in this utility model is shown;

[0015] Figure 3 A partial schematic diagram of the connection between the screening cylinder and the positioning tube in this utility model is shown;

[0016] Figure 4 A partial schematic diagram of the connection between the vibrating plate and the guide plate in this utility model is shown;

[0017] Figure 5 A partial schematic diagram of the connection between the feed hopper and the dispersing roller in this utility model is shown;

[0018] Figure 6 A partial schematic diagram of the connection between the feed hopper and the crushing roller in this utility model is shown;

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Outer shell; 2. Feed hopper; 3. Positioning frame; 4. Screening cylinder; 5. Screening hole one; 6. Screening hole two; 7. Screening hole three; 8. Stirring rod; 9. Servo motor one; 10. Positioning tube; 11. Inclined baffle; 12. Feeding hopper; 13. Servo motor two; 14. Crushing roller; 15. Baffle; 16. Servo motor three; 17. Dispersing roller; 18. Groove; 19. Support rod one; 20. Support rod two; 21. Spring; 22. Vibrating plate; 23. Guide plate; 24. Vibrating motor; 25. Discharge hopper. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and preferred embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0022] In the description of the utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0023] Example 1: An integrated crushing and screening device for concrete processing includes a shell 1, a feed hopper 2 fixedly connected to the top of the shell 1, three discharge hoppers 25 fixedly connected to the bottom of the shell 1, and a rolling screening mechanism arranged inside the shell 1. The rolling screening mechanism includes a positioning frame 3, one side of which is fixedly connected to the inner wall of the shell 1, and a screening cylinder 4 rotatably connected to one side of the positioning frame 3. The outer side of the screening cylinder 4 has multiple screening holes 1 5, 2 6, and 3 7. Two stirring rods 8 are fixedly connected to one side of the screening cylinder 4, and a positioning tube 10 is rotatably connected to the outer side of the screening cylinder 4. One side of the positioning tube 10 is fixedly connected to the inner side of the shell 1, and the inner side of the positioning tube 10 is fixedly connected to... An inclined baffle 11 is provided. A feeding hopper 12 is fixedly connected to the top of the positioning tube 10. Multiple screening holes 5, 6, and 7 are arranged in descending order of size on the outside of the screening cylinder 4. A servo motor 9 is fixedly connected to the outside of the outer shell 1. The output end of the servo motor 9 is fixedly connected to one side of the screening cylinder 4. The screening cylinder 4 has a conical cross-section. A crushing and feeding mechanism is provided on the outside of the feeding hopper 2. The servo motor 9 drives the screening cylinder 4 to rotate, so that the sand and gravel entering the screening cylinder 4 are guided by the conical inclined shape of the screening cylinder 4 and are screened sequentially through screening holes 7, 6, and 5. The sand and gravel are then collected by three discharge hoppers 25.

[0024] Example 2: The crushing and feeding mechanism includes two servo motors 13. One side of the servo motor 13 is fixedly connected to the outside of the feed hopper 2. A crushing roller 14 is fixedly connected to the output end of the servo motor 13. The outside of the crushing roller 14 is rotatably connected to the inside of the feed hopper 2. Two baffles 15 are fixedly connected to the inside of the feed hopper 2. A servo motor 16 is fixedly connected to one side of the feed hopper 2. A dispersing roller 17 is fixedly connected to the output end of the servo motor 16. Three grooves 18 are provided on the outside of the dispersing roller 17. Multiple support rods 19 are fixedly connected to the inside of the outer shell 1. Support rods 2 are slidably connected to the top of the support rods 19. 20. Springs 21 are sleeved on the outer sides of support rod 19 and support rod 20. Vibration plate 22 is fixedly connected to the top of support rod 20. Guide plate 23 is fixedly connected to one side of vibration plate 22. Vibration motor 24 is fixedly connected to the bottom of vibration plate 22. The crushing of sand and gravel is completed by two crushing rollers 14. Through the rotation of dispersion roller 17 and three grooves 18, sand and gravel can be quantitatively fed to the top of vibration plate 22. The weight of sand and gravel accumulated on the surface of vibration plate 22 will not exceed the vibration force of vibration motor 24, so that vibration plate 22 can maintain good vibration conveying efficiency for sand and gravel.

[0025] Working principle of this utility model: This utility model designs an integrated crushing and screening device for sand and gravel used in concrete processing. The specific structure is shown in the attached instruction manual. Figure 1-6As shown, in this technical solution, through the cooperation between various structures, when crushing sand and gravel for concrete processing, the sand and gravel are first poured into the top of the feed hopper 2. Under the guidance of the two baffles 15, the sand and gravel gather on one side of the two crushing rollers 14. Then, the two servo motors 13 drive the crushing rollers 14 to rotate in opposite directions, so that the two crushing rollers 14 can crush the sand and gravel. After that, the crushed sand and gravel will enter the groove 18 inside the dispersing roller 17. Then, the servo motor 16 drives the dispersing roller 17 and the three grooves 18 to rotate. When the groove 18 containing the crushed sand and gravel moves to the bottom of the feed hopper 2, the sand and gravel inside the groove 18 will fall to the top of the vibrating plate 22. Then, the vibrating motor 24 will vibrate the vibrating plate 22. At the same time, the vibrating plate 22 will vibrate up and down through the support rod 1 19, support rod 20 and spring 21, so that the sand and gravel on the top of the vibrating plate 22 will move along the surface of the vibrating plate 22 to one side of the guide plate 23 and pass through the guide plate. The 23 particles are concentrated and moved into the inside of the feeding hopper 12. Guided by the feeding hopper 12, the sand and gravel can enter the inside of the positioning tube 10. The inclined baffle 11 causes the sand and gravel to move into the inside of the screening cylinder 4. At the same time, the servo motor 9 drives the screening cylinder 4 to rotate between the positioning frame 3 and the positioning tube 10. Then, the screening cylinder 4 drives the two stirring rods 8 to move the sand and gravel inside the positioning tube 10, so that the sand and gravel can enter the inside of the screening cylinder 4 more quickly. Then, under the rotation of the screening cylinder 4, the conical setting of the screening cylinder 4 allows the sand and gravel to move towards the screening hole 5 inside the screening cylinder 4 during the rotation of the screening cylinder 4. Thus, the sand and gravel can pass through the screening hole 7, the screening hole 6, and the screening hole 5 in sequence, so that the sand and gravel can be rotated and screened by the screening cylinder 4 in the order of small to large. Finally, the screened sand and gravel fall into the inside of the three discharge hoppers 25, so that sand and gravel of different sizes can be collected separately for different processing purposes.

[0026] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A sandstone crushing and screening integrated device for concrete processing, comprising a shell (1), characterized in that, The shell (1) top fixedly connected with feeding hopper (2), the shell (1) bottom fixedly connected with three discharge hopper (25), the shell (1) inside is provided with rolling screening mechanism; The rolling screening mechanism includes a positioning frame (3), one side of the positioning frame (3) is fixedly connected with the inner wall of the shell (1), one side of the positioning frame (3) is rotatably connected with a screening cylinder (4), a plurality of screening holes (5), screening holes (6) and screening holes (7) are formed in the outer side of the screening cylinder (4), two stirring rods (8) are fixedly connected to one side of the screening cylinder (4), and a positioning tube (10) is rotatably connected to the outer side of the screening cylinder (4). The feeding hopper (2) is provided with a crushing and feeding mechanism outside.

2. The sand and gravel crushing and screening integrated device for concrete processing according to claim 1, characterized in that, The positioning tube (10) is fixedly connected with the inner side of the shell (1), the inner side of the positioning tube (10) is fixedly connected with an inclined baffle (11), and the top of the positioning tube (10) is fixedly connected with a feeding hopper (12).

3. The sand and gravel crushing and screening integrated device for concrete processing according to claim 2, characterized in that, A plurality of screening holes (5), screening holes (6) and screening holes (7) are arranged in order from large to small on the outer side of the screening cylinder (4), a servo motor (9) is fixedly connected to the outer side of the shell (1), the output end of the servo motor (9) is fixedly connected with one side of the screening cylinder (4), and the cross section of the screening cylinder (4) is conical.

4. The sand and gravel crushing and screening integrated device for concrete processing according to claim 1, characterized in that, The crushing and feeding mechanism includes two servo motors (13), one side of the servo motor (13) is fixedly connected with the outer side of the feeding hopper (2), the output end of the servo motor (13) is fixedly connected with a crushing roller (14), and the outer side of the crushing roller (14) is rotatably connected with the inner side of the feeding hopper (2).

5. The sand and gravel crushing and screening integrated device for concrete processing according to claim 4, characterized in that, The inner side of the feeding hopper (2) is fixedly connected with two baffles (15), one side of the feeding hopper (2) is fixedly connected with a servo motor (16), the output end of the servo motor (16) is fixedly connected with a dispersion roller (17), and the outer side of the dispersion roller (17) is provided with three grooves (18).

6. The sand and gravel crushing and screening integrated device for concrete processing according to claim 5, characterized in that, The inner side of the shell (1) is fixedly connected with a plurality of supporting rods (19), the top of the supporting rod (19) is slidably connected with a supporting rod (20), the outer sides of the supporting rod (19) and the supporting rod (20) are sleeved with springs (21), and the top of the supporting rod (20) is fixedly connected with a vibrating plate (22).

7. The sand and gravel crushing and screening integrated device for concrete processing according to claim 6, characterized in that, The vibrating plate (22) is fixedly connected with a guide plate (23) on one side, and a vibrating motor (24) is fixedly connected to the bottom of the vibrating plate (22). The vibrating plate (22) is fixedly connected with a guide plate (23) on one side, and a vibrating motor (24) is fixedly connected to the bottom of the vibrating plate (22).

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