A concrete aggregate screening and impurity removing device
By designing a screening cylinder and a rotating mechanism, combined with an inclined and retaining ring structure, the problem of incomplete screening in existing devices has been solved, achieving efficient screening of coarse aggregate and removal of impurities.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG TIANYI HEAVY STONE CONSTR TECH CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-03
AI Technical Summary
Existing screening and impurity removal devices are unable to completely remove small particle impurities from coarse aggregates, especially due to the lack of vibration devices, which leads to incomplete screening.
Screening is performed using a screening cylinder, and the coarse aggregate is rolled inside the rotating screening cylinder. Combined with the inclined design and the retaining ring structure, impurities are ensured to be discharged through the filter holes, and qualified aggregate enters the receiving bucket through the discharge port.
It achieves thorough screening of coarse aggregates, prevents retention, ensures that impurities and aggregates are collected separately, and improves screening efficiency and equipment lifespan.
Smart Images
Figure CN224443663U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a screening and impurity removal device, specifically a screening and impurity removal device for concrete aggregates. Background Technology
[0002] Concrete aggregates are granular loose materials that serve as the skeleton or filler in concrete. They are divided into coarse aggregates and fine aggregates. Coarse aggregates refer to pebbles, crushed stone, etc., while fine aggregates refer to natural sand, manufactured sand, etc. In the production of existing coarse aggregates, there are usually small particulate impurities such as sand particles. Therefore, screening and impurity removal devices are often required to remove small particulate impurities from the coarse aggregates, thereby obtaining the coarse aggregates we want.
[0003] Existing screening and impurity removal devices are generally mesh-type screening and impurity removal devices. For example, a combined screen for screening coarse aggregate in concrete, with publication number CN208991189U, is used. The aggregate is screened through the screen, but because it does not have a vibration device, it is difficult to completely screen out small particle impurities in the coarse aggregate. Utility Model Content
[0004] The present invention provides a concrete aggregate screening and impurity removal device to solve the above-mentioned technical problems. The device uses a screening cylinder to screen coarse aggregate, and controls the coarse aggregate to roll in the screening cylinder by rotating the screening cylinder, thereby making the screening more thorough.
[0005] To solve the above-mentioned technical problems, the technical solution of this utility model for a concrete aggregate screening and impurity removal device is as follows:
[0006] The device includes a left mounting frame, a right mounting frame, and a screening cylinder rotatably connected between the left and right mounting frames. The screening cylinder is inclined upwards from left to right, with a feed inlet on the left side and a retaining ring abutting against the right side wall. A discharge outlet is located at the lower end of the retaining ring. A receiving bucket is placed below the discharge outlet. Multiple parallel guide rods are connected to the right side of the left mounting frame. Rod sleeves are slidably connected to each of the guide rods. Each rod sleeve is connected to the retaining ring, and a spring is placed between the rod sleeve and the left mounting frame. Filter holes are provided on the screening cylinder. A drive device for rotating the screening cylinder is installed on either the left or right mounting frame.
[0007] A first bearing connects the screening cylinder to the right mounting bracket.
[0008] A fixing frame is connected to the left side of the inside of the screening cylinder; a connecting shaft coaxial with the screening cylinder is connected to the fixing frame; the connecting shaft is rotatably connected to the left mounting frame.
[0009] A second bearing is connected between the connecting shaft and the left mounting bracket.
[0010] The drive device includes a motor, a first pulley, a second pulley, and a transmission belt; the motor is mounted above the left mounting bracket; the first pulley is connected to the motor's shaft; the second pulley is connected to the connecting shaft; and the transmission belt is connected to the first pulley and the second pulley.
[0011] The technical effects that this utility model can achieve are:
[0012] 1. This utility model uses a screening cylinder to screen coarse aggregate. When in use, the coarse aggregate to be screened is put into the feed inlet. By rotating the screening cylinder, the coarse aggregate is tumbled to make the screening more thorough. In addition, by rotating the screening cylinder, the coarse aggregate can be prevented from being retained in the screening cylinder. It is ensured that the screened coarse aggregate can be collected in the receiving bucket from the discharge outlet by taking advantage of the inclined design of the screening cylinder.
[0013] 2. This utility model designs a retaining ring and uses a spring to press the retaining ring against the left side wall of the screening cylinder. This ensures that the discharge port is always located at the bottom while the screening cylinder rotates, so that the screened coarse aggregate falls from the discharge port into the receiving bucket. Attached Figure Description
[0014] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:
[0015] Figure 1 This is a cross-sectional view of a concrete aggregate screening and impurity removal device according to this utility model;
[0016] Figure 2 This is a schematic diagram of the structure of a concrete aggregate screening and impurity removal device according to the present invention;
[0017] Figure 3 yes Figure 2 Enlarged view of part A;
[0018] Figure 4 This is a schematic diagram of the screening cylinder structure;
[0019] Figure 5 This is a connection diagram of the retaining ring;
[0020] Figure 6 yes Figure 5 Enlarged view of part B. Detailed Implementation
[0021] The present invention will now be described in further detail with reference to the accompanying drawings.
[0022] See Figures 1 to 6 .
[0023] A concrete aggregate screening and impurity removal device includes a left mounting frame 1, a right mounting frame 2, and a screening cylinder 3 rotatably connected between the left mounting frame 1 and the right mounting frame 2. Specifically, the screening cylinder 3 is inclined upwards from left to right, and a first bearing 21 connects the screening cylinder 3 to the right mounting frame 2. A fixing frame 22 is connected to the left side inside the screening cylinder 3, and a connecting shaft 23 coaxial with the screening cylinder 3 is connected to the fixing frame 22. The connecting shaft 23 is rotatably connected to the left mounting frame 1, and a second bearing 24 connects the connecting shaft 23 to the left mounting frame 1. This invention reduces the friction between the connecting shaft 23 and the left mounting frame 1 during rotation by using the second bearing 24, and reduces the friction between the screening cylinder 3 and the right mounting frame 2 during rotation by using the first bearing 21, thereby increasing its service life.
[0024] The screening cylinder 3 has a feed inlet 4 on its right side and a retaining ring 5 against its left side wall. A discharge outlet 6 is located at the lower end of the retaining ring 5, and a receiving bucket 7 is placed below the discharge outlet 6. Multiple parallel guide rods 8 are connected to the right side of the left mounting frame 1. Specifically, two parallel guide rods 8 are connected to the right side of the left mounting frame 1. Rod sleeves 9 are slidably connected to both guide rods 8, and both rod sleeves 9 are connected to the retaining ring 5. Springs 10 are placed between the rod sleeves 9 and the left mounting frame 1. Filter holes 11 are provided on the screening cylinder 3. This invention uses springs 10 to keep the retaining ring 5 pressed against the left side wall of the screening cylinder 3. During the rotation of the screening cylinder 3, the retaining ring 5 ensures that the discharge outlet 6 remains below, thus ensuring that the screened coarse aggregate falls from the discharge outlet 6 into the receiving bucket 7.
[0025] A drive device for rotating the screening cylinder 3 is mounted on either the left mounting bracket 1 or the right mounting bracket 2; preferably, the drive device is mounted on the left mounting bracket 1. Specifically, the drive device includes a motor 31, a first pulley 32, a second pulley 33, and a transmission belt 34. The motor 31 is mounted above the left mounting bracket 1, the first pulley 32 is connected to the shaft of the motor 31, the second pulley 33 is connected to the connecting shaft 23, and the transmission belt 34 connects the first pulley 32 and the second pulley 33. In this invention, by turning on the motor 31, the motor 31 drives the first pulley 32 to rotate, which in turn drives the second pulley 33 and the connecting shaft 23 to rotate via the transmission belt 34. When the connecting shaft 23 rotates, the screening cylinder 3 also rotates. Therefore, in this invention, the screening cylinder 3 can be rotated by the motor 31 alone.
[0026] Instructions for use: When using this utility model, first turn on the motor 31, which will drive the screening cylinder 3 to rotate. Then, put the coarse aggregate to be screened into the feed inlet 4. The coarse aggregate to be screened falls into the screening cylinder 3. Because the screening cylinder 3 is tilted upward from left to right and is rotating, the coarse aggregate to be screened rolls inside the screening cylinder 3 and slides down along the screening cylinder 3. Small particles of impurities fall out of the screening cylinder 3 through the filter holes 11. The screened coarse aggregate falls into the receiving bucket 7 through the discharge port 6, thus completing the screening.
Claims
1. A concrete aggregate screening and impurity removal device, characterized in that: The system includes a left mounting bracket (1), a right mounting bracket (2), and a screening cylinder (3) rotatably connected between the left mounting bracket (1) and the right mounting bracket (2). The screening cylinder (3) is inclined upward from left to right, and a feed inlet (4) is provided on the left side of the screening cylinder (3), and a retaining ring (5) is abutted on the right side wall. A discharge outlet (6) is provided at the lower end of the retaining ring (5). A receiving bucket (7) is placed below the discharge outlet (6). Multiple parallel guide rods (8) are connected to the right side of the left mounting bracket (1). A rod sleeve (9) is slidably connected to each of the multiple guide rods (8). The rod sleeves (9) are all connected to the retaining ring (5), and a spring (10) is placed between the rod sleeves (9) and the left mounting bracket (1). Filter holes (11) are provided on the screening cylinder (3). A drive device for driving the screening cylinder (3) to rotate is installed on the left mounting bracket (1) or the right mounting bracket (2).
2. The impurity removing device for concrete aggregate screening according to claim 1, characterized in that: A first bearing (21) is connected between the screening cylinder (3) and the right mounting bracket (2).
3. The impurity removing device for concrete aggregate screening according to claim 1, characterized in that: A fixing frame (22) is connected to the left side inside the screening cylinder (3); a connecting shaft (23) coaxial with the screening cylinder (3) is connected to the fixing frame (22); the connecting shaft (23) is rotatably connected to the left mounting frame (1).
4. The apparatus according to claim 3, wherein: A second bearing (24) is connected between the connecting shaft (23) and the left mounting bracket (1).
5. The apparatus for screening and removing impurities of concrete aggregate according to claim 3, characterized in that: The drive device includes a motor (31), a first pulley (32), a second pulley (33), and a transmission belt (34); the motor (31) is mounted above the left mounting bracket (1); the first pulley (32) is connected to the rotating shaft of the motor (31); the second pulley (33) is connected to the connecting shaft (23); and the transmission belt (34) is connected to the first pulley (32) and the second pulley (33).