Filtering and screening equipment for concrete aggregate

Abstract

The utility model discloses filtering and screening equipment for concrete aggregate. The filtering and screening equipment comprises a rack and a screening mechanism, the rear side of the upper end of the rack is fixedly connected with a feeding hopper through a supporting frame; the screening mechanism comprises screening rollers, the upper end of the machine frame is rotationally connected with three sets of evenly-distributed screening rollers, the three sets of screening rollers are distributed in a stepped mode from back to front, and the distance between the screening rollers grouped at the rearmost end is smaller than the distance between the screening rollers in the middle. The interval between the screening rollers in the middle group is smaller than the interval between the screening rollers in the foremost group, clamping teeth which are evenly distributed are fixedly connected to the outer arc faces of the screening rollers, and the clamping teeth of every two adjacent screening rollers in each group are distributed in a left-right staggered mode. The distances among the three groups of screening rollers are reduced from front to back, so that the concrete aggregate is filtered and sorted, and meanwhile, the load of a motor is reduced.

Description

Technical Field

[0001] This utility model relates to the field of concrete aggregate processing technology, specifically to a filtration and screening device for concrete aggregates. Background Technology

[0002] Concrete aggregates refer to the granular, loose materials that act as a skeleton or filler in concrete. They are divided into coarse aggregates and fine aggregates. Coarse aggregates include pebbles and crushed stone, while fine aggregates include natural sand and manufactured sand. Aggregates in concrete can improve its compressive and shear strength, increase its stability and load-bearing capacity. When concrete is subjected to loads, aggregates can bear part of the load, distribute the load, and reduce stress concentration, thereby improving the concrete's seismic and wind resistance. Aggregates in concrete can also improve its toughness and durability, reducing the likelihood of concrete failure due to external forces.

[0003] Concrete aggregates need to be filtered and screened first, usually using a drum screen or a vibrating screen. Drum screens can only screen concrete aggregate raw materials into two specifications. At the same time, when the drum screen or vibrating screen is running, the motor load is the weight of all the raw materials inside the screen plus the weight of the equipment itself, which is a high load and affects the service life of the motor. Therefore, we propose a filtering and screening device for concrete aggregates. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a filtration and screening device for concrete aggregates. By using screening rollers that are distributed in a stepped manner, the distance between the three sets of screening rollers decreases from front to back, thereby achieving the filtration and sorting of concrete aggregates and reducing the load on the motor. This can effectively solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a filtration and screening device for concrete aggregates, comprising a frame and a screening mechanism;

[0006] The upper rear side of the frame is fixedly connected to the feed hopper via a support frame;

[0007] Screening mechanism: It includes screening rollers. Three sets of evenly distributed screening rollers are rotatably connected to the upper end of the frame. The three sets of screening rollers are arranged in a stepped manner from back to front. The distance between the screening rollers in the last group is smaller than the distance between the screening rollers in the middle group, and the distance between the screening rollers in the middle group is smaller than the distance between the screening rollers in the foremost group. The outer arc surface of each screening roller is fixedly connected with evenly distributed teeth. The teeth of two adjacent screening rollers in each group are staggered left and right. The rear end of the frame is fixedly connected with a discharge baffle. The lower surface of the discharge baffle is tangent to the outer arc surface of the foremost screening roller. Through the stepped distribution of screening rollers, the distance between the three sets of screening rollers decreases from front to back, realizing the filtering and sorting of concrete aggregates, while reducing the load on the motor.

[0008] Furthermore, it also includes a control switch assembly, which is located on the left side of the frame. The input end of the control switch assembly is electrically connected to an external power source to control the start and stop of the motor.

[0009] Furthermore, the screening mechanism also includes a motor base, a motor, sprocket one, and sprocket two. Sprocket one and sprocket two are fixedly fitted onto the left end of each screening roller. Sprocket two is located on the far left of each screening roller. In the last group, adjacent sprocket one units are connected by chain one. In the last group, except for the first and last sprocket two units, adjacent sprocket two units are connected by chain two. In the middle group, adjacent sprocket one units are connected by chain three. In the middle group, except for the first and last sprocket two units, adjacent sprocket two units are connected by chain three. The two sprockets 2 are connected by chain 4. The two adjacent sprockets 1 in the frontmost group are connected by chain 5. Except for the frontmost and rearmost sprockets 2, the other two adjacent sprockets 2 in the frontmost group are connected by chain 6. A motor base is fixedly connected to the left side of the upper end of the frame. Three motors are fixedly connected to the bottom wall of the motor base. The output shaft of the motor is fixedly connected to the left side of the screening roller located at the rear end of the adjacent group. The input end of the motor is electrically connected to the output end of the control switch group, driving the screening roller of each group to rotate synchronously.

[0010] Furthermore, the lower end of the frame is fixedly connected with sorting frame one, sorting frame two and sorting frame three in sequence from back to front. Sorting frame one is located at the lower end of the screening rollers in the last group, sorting frame two is located at the lower end of the screening rollers in the middle group, and sorting frame three is located at the lower end of the screening rollers in the foremost group, so as to guide the sorted raw materials.

[0011] Furthermore, the openings of sorting boxes one and three face to the right, while the opening of sorting box two faces to the left, which facilitates loading.

[0012] Furthermore, two transition plates are fixedly connected to the upper end of the frame. The lower surface of the rear transition plate is tangent to the outer arc surface of the screening roller at the front end of the last group and the outer arc surface of the screening roller at the rear end of the middle group, respectively. The lower surface of the front transition plate is tangent to the outer arc surface of the screening roller at the front end of the middle group and the outer arc surface of the screening roller at the rear end of the front group, respectively, to prevent the raw material from falling from the transition position of each group.

[0013] Furthermore, the upper end of the frame is fixedly connected with partition 1 and partition 2 from back to front. Partition 1 is located at the lower end of the screening roller at the frontmost position in the last group, and partition 2 is located at the lower end of the screening roller at the frontmost position in the middle group. The front sides of partition 1 and partition 2 are both arc-shaped partitions to isolate raw materials of different specifications.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This filtration and screening equipment for concrete aggregates has the following advantages:

[0015] 1. The three sets of screening rollers are arranged in a stepped manner from back to front, and the gap between adjacent screening rollers and the teeth in the three sets increases from front to back. The raw materials of concrete aggregate that meet the requirements fall through the corresponding gaps, and the raw materials of concrete aggregate are screened into four different specifications, thereby realizing the filtration and sorting of concrete aggregate.

[0016] 2. Each motor drives a set of screening rollers to rotate synchronously. The load of each screening roller is the weight of the raw material at its upper end. The weight of the concrete aggregate raw material is evenly distributed, which greatly reduces the load on each motor and improves its service life. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the screening roller of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of partition one and partition two of this utility model.

[0021] In the diagram: 1. Frame, 2. Screening mechanism, 21. Screening roller, 22. Motor base, 23. Motor, 24. Sprocket 1, 25. Sprocket 2, 3. Gear, 4. Transition plate, 5. Partition 1, 6. Feed hopper, 7. Partition 2, 8. Discharge baffle, 9. Selection box 1, 10. Selection box 2, 11. Selection box 3, 12. Control switch group. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-4 This embodiment provides a technical solution: a filtration and screening device for concrete aggregates, including a frame 1 and a screening mechanism 2;

[0024] Frame 1: The upper rear side is fixedly connected to the feed hopper 6 via a support frame;

[0025] Screening mechanism 2 includes screening rollers 21. Three sets of evenly distributed screening rollers 21 are rotatably connected to the upper end of the frame 1. The three sets of screening rollers 21 are arranged in a stepped pattern from back to front. The spacing between the screening rollers 21 in the last group is smaller than the spacing between the screening rollers 21 in the middle group, and the spacing between the screening rollers 21 in the middle group is smaller than the spacing between the screening rollers 21 in the foremost group. Evenly distributed teeth 3 are fixedly connected to the outer arc surface of each screening roller 21. The teeth 3 of two adjacent screening rollers 21 in each group are staggered left and right. A discharge baffle 8 is fixedly connected to the rear end of the frame 1. The lower surface of the discharge baffle 8 is tangent to the outer arc surface of the foremost screening roller 21. Screening mechanism 2 also includes a motor base 22, a motor 23, a first sprocket 24, and a second sprocket 25. Each of the left ends of the screening roller 21 is fixedly fitted with a first sprocket 24 and a second sprocket 25. The second sprocket 25 is located on the far left of the screening roller 21. In the last group, adjacent first sprockets 24 are connected by chain 1. In the last group, except for the first and last sprockets 25, adjacent second sprockets 25 are connected by chain 2. In the middle group, adjacent first sprockets 24 are connected by chain 3. In the middle group, except for the first and last sprockets 25, adjacent second sprockets 25 are connected by chain 4. In the first group, adjacent first sprockets 24 are connected by chain 5. In the first group, except for the first and last sprockets 25, adjacent second sprockets 25 are connected by chain 5. The two adjacent sprockets 25 are connected by chain drive 6. A motor base 22 is fixedly connected to the left side of the upper end of the frame 1. Three motors 23 are fixedly connected to the bottom wall of the motor base 22. The output shafts of the motors 23 are fixedly connected to the left side of the screening roller 21 located at the rear end of the adjacent group. The input ends of the motors 23 are electrically connected to the output ends of the control switch group 12. From back to front, the lower end of the frame 1 is fixedly connected to sorting frames 9, 10, and 11. Sorting frame 9 is located at the lower end of the screening roller 21 in the rearmost group, sorting frame 20 is located at the lower end of the screening roller 21 in the middle group, and sorting frame 11 is located at the lower end of the screening roller 21 in the frontmost group. The openings of sorting frames 9 and 11 face to the right. The opening of frame 2 10 faces to the left. Two transition plates 4 are fixedly connected to the upper end of frame 1. The lower surface of the rear transition plate 4 is tangent to the outer arc surface of the screening roller 21 located at the front end in the last group and the outer arc surface of the screening roller 21 located at the rear end in the middle group. The lower surface of the front transition plate 4 is tangent to the outer arc surface of the screening roller 21 located at the front end in the middle group and the outer arc surface of the screening roller 21 located at the rear end in the front group. From back to front, partition 1 5 and partition 2 7 are fixedly connected to the upper end of frame 1. Partition 1 5 is located at the lower end of the screening roller 21 located at the front end in the last group, and partition 2 7 is located at the lower end of the screening roller 21 located at the front end in the middle group. The front sides of partition 1 5 and partition 2 7 are both arc-shaped partitions.The output shaft of motor 23 rotates, driving the last screening roller 21 of each group to rotate. Through the transmission of sprockets 24 and 25 and various chains, each group of screening rollers 21 rotates synchronously. The spacing between each group of screening rollers 21 is the same. At the same time, the spacing between the screening rollers 21 in the last group is smaller than the spacing between the screening rollers 21 in the middle group, and the spacing between the screening rollers 21 in the middle group is smaller than the spacing between the screening rollers 21 in the foremost group. The gap between adjacent screening rollers 21 and the cleats 3 in the three groups increases from back to front. As the concrete aggregate is driven forward by the teeth of the screening rollers 21, materials meeting the requirements fall through the gaps between adjacent screening rollers 21 and the teeth 3. The three different sizes of materials fall into sorting frames 1 (9), 2 (10), and 3 (11), respectively. The openings of sorting frames 1 (9) and 3 (11) face to the right, while the opening of sorting frame 2 (10) faces to the left for easy loading. Partitions 1 (5) and 2 (7) separate materials of different sizes, and a transition plate 4 prevents materials from falling off from the gaps between each set of screening rollers 21.

[0026] It also includes a control switch group 12, which is located on the left side of the frame 1, and the input terminal of the control switch group 12 is electrically connected to an external power supply.

[0027] The working principle of the concrete aggregate filtration and screening equipment provided by this utility model is as follows: The concrete aggregate raw material is fed into the feed hopper 6. Under the action of gravity, the concrete aggregate raw material slides down between the rear screening rollers 21. The output shaft of the motor 23 rotates, driving the last screening roller 21 of each group to rotate. Through the transmission of sprocket 1 24, sprocket 25, and various chains, each group of screening rollers 21 rotates synchronously. The spacing between each group of screening rollers 21 is the same. Simultaneously, the spacing between the last group of screening rollers 21 is smaller than the spacing between the middle group of screening rollers 21, and the spacing between the middle group of screening rollers 21 is smaller than the spacing between the frontmost group of screening rollers. The spacing between the grouped screening rollers 21, and the gap between adjacent screening rollers 21 and the teeth 3 in the three groups, increases from back to front. As the raw material of concrete aggregate is driven forward by the teeth of the screening rollers 21, the raw material that meets the requirements falls through the gap between adjacent screening rollers 21 and the teeth 3. The three different specifications of raw materials fall into sorting frames 1-9, 2-10 and 3-11 respectively. The openings of sorting frames 1-9 and 3-11 face to the right, and the opening of sorting frame 2-10 faces to the left for easy loading. Partitions 1-5 and 2-7 separate raw materials of different specifications. The transition plate 4 prevents raw materials from falling off from the gaps between each group of screening rollers 21.

[0028] It is worth noting that the motor 23 disclosed in the above embodiments can be a CH-32-1500-3-AB-G1-T motor, and the control switch group 12 is provided with a switch button corresponding to the motor 23 for controlling its switching operation.

[0029] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A filtration and screening device for concrete aggregates, characterized in that: Includes a frame (1) and a screening mechanism (2); The upper rear side of the frame (1) is fixedly connected to the feed hopper (6) via a support frame; Screening mechanism (2): It includes screening rollers (21). Three sets of evenly distributed screening rollers (21) are rotatably connected to the upper end of the frame (1). The three sets of screening rollers (21) are distributed in a stepped manner from back to front. The distance between the screening rollers (21) in the last group is smaller than the distance between the screening rollers (21) in the middle. The distance between the screening rollers (21) in the middle group is smaller than the distance between the screening rollers (21) in the foremost group. The outer arc surface of the screening rollers (21) is fixedly connected with evenly distributed teeth (3). The teeth (3) of two adjacent screening rollers (21) in each group are staggered left and right. The rear end of the frame (1) is fixedly connected with a discharge baffle (8). The lower surface of the discharge baffle (8) is tangent to the outer arc surface of the screening roller (21) at the foremost position.

2. The filtration and screening equipment for concrete aggregates according to claim 1, characterized in that: It also includes a control switch group (12), which is located on the left side of the frame (1), and the input end of the control switch group (12) is electrically connected to an external power supply.

3. The filtration and screening equipment for concrete aggregates according to claim 2, characterized in that: The screening mechanism (2) also includes a motor base (22), a motor (23), a sprocket one (24), and a sprocket two (25). The left end of the screening roller (21) is fixedly fitted with sprocket one (24) and sprocket two (25). Sprocket two (25) is located on the far left of the screening roller (21). In the last group, two adjacent sprocket one (24) are connected by chain one. In the last group, except for the sprocket two (25) at the front and rear ends, two adjacent sprocket two (25) are connected by chain two. In the middle group, two adjacent sprocket one (24) are connected by chain three. In the middle group, except for the sprocket two at the front and rear ends, two adjacent sprocket two (25) are connected by chain three. (25) The two adjacent sprockets (25) are connected by chain four. The two adjacent sprockets (24) in the frontmost group are connected by chain five. The two adjacent sprockets (25) in the frontmost group, except for the frontmost and rearmost sprockets (25), are connected by chain six. A motor base (22) is fixedly connected to the left side of the upper end of the frame (1). Three motors (23) are fixedly connected to the bottom wall of the motor base (22). The output shaft of the motor (23) is fixedly connected to the left side of the screening roller (21) located at the rearmost end in the adjacent group. The input end of the motor (23) is electrically connected to the output end of the control switch group (12).

4. The filtering and screening equipment for concrete aggregates according to claim 1, characterized in that: The lower end of the frame (1) is fixedly connected with sorting frame one (9), sorting frame two (10) and sorting frame three (11) in sequence from back to front. Sorting frame one (9) is located at the lower end of the screening roller (21) in the last group, sorting frame two (10) is located at the lower end of the screening roller (21) in the middle group, and sorting frame three (11) is located at the lower end of the screening roller (21) in the foremost group.

5. A filtration and screening device for concrete aggregates according to claim 4, characterized in that: The openings of sorting box one (9) and sorting box three (11) face to the right, and the opening of sorting box two (10) faces to the left.

6. The filtering and screening equipment for concrete aggregates according to claim 1, characterized in that: The upper end of the frame (1) is fixedly connected to two transition plates (4). The lower surface of the rear transition plate (4) is tangent to the outer arc surface of the screening roller (21) located at the front end in the last group and the outer arc surface of the screening roller (21) located at the rear end in the middle group. The lower surface of the front transition plate (4) is tangent to the outer arc surface of the screening roller (21) located at the front end in the middle group and the outer arc surface of the screening roller (21) located at the rear end in the front end group.

7. A filtration and screening device for concrete aggregates according to claim 1, characterized in that: The upper end of the frame (1) is fixedly connected with partition 1 (5) and partition 2 (7) from back to front. Partition 1 (5) is located at the lower end of the screening roller (21) at the frontmost position in the last group, and partition 2 (7) is located at the lower end of the screening roller (21) at the frontmost position in the middle group. The front sides of partition 1 (5) and partition 2 (7) are both arc-shaped partitions.

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