Mixing soil aggregate screening device
By designing a rotatable screening cylinder, a motor drive, and an automatic cleaning mechanism, the problem of screen hole clogging was solved, achieving efficient screening and automatic cleaning, and reducing labor intensity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YICHANG XUDA COMMERCIAL CONCRETE CO LTD
- Filing Date
- 2025-05-28
- Publication Date
- 2026-05-12
AI Technical Summary
In existing screening devices, larger particle impurities are prone to clogging the screen holes, resulting in reduced screening efficiency and requiring manual cleaning by staff, which increases the workload.
A mixed soil aggregate screening device was designed, which adopts a rotatable screening cylinder, motor drive, lifting plate and electric telescopic rod. The device cleans up blockages and impurities by inserting the rod, and automatically discharges impurities by using a sealing rod and spring structure, reducing manual intervention.
It achieves automated impurity cleaning, improves screening efficiency, reduces the labor intensity of workers, and simplifies the cleaning process.
Smart Images
Figure CN224221897U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of screening device technology, and in particular to a screening device for mixed soil aggregate. Background Technology
[0002] Concrete aggregates refer to granular loose materials that serve as the skeleton or filler in concrete. Concrete aggregates 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 with a particle size of less than 4.75mm are called fine aggregates, commonly known as sand. Before use, fine aggregates need to be screened using a screening device to remove larger particle impurities. However, when using modern screening devices, some larger particle impurities are easily blocked in the screen holes, resulting in reduced screening efficiency. This requires manual cleaning by workers, increasing their workload. Utility Model Content
[0003] This utility model discloses a mixed soil aggregate screening device, which solves the problem that large particle impurities are easily blocked in the screen holes of the screening device, and subsequently require manual cleaning by staff.
[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0005] A mixed soil aggregate screening device includes a housing, a rotatable screening cylinder inside the housing, a motor for driving the screening cylinder inside the housing, and a feed pipe passing through the axis of one side of the screening cylinder on the housing. The top and bottom of the screening cylinder have openings, and a sealing rod movable to the outside of the opening is provided in the opening. A connecting rod is fixed between the two sealing rods. Connecting plates fixed inside the screening cylinder are provided on both sides of the sealing rods. A spring is fixed between the connecting plate and the sealing rod. A lifting plate is provided above the screening cylinder. An insertion rod that can be inserted into the screen hole on the screening cylinder is fixed at the bottom of the lifting plate. An electric telescopic rod for driving the lifting plate is provided on the housing.
[0006] Compared with the prior art, the present invention has the following beneficial effects:
[0007] Fine aggregate is fed into the screening cylinder through the feed pipe. The motor is started to rotate the screening cylinder. After entering the cylinder, the fine aggregate falls through the screen holes, completing the screening process. Larger particles remain in the screening cylinder. When it is necessary to clean impurities clogging the screening cylinder, the electric telescopic rod is activated, causing the lifting plate to move the insert rod downwards. The insert rod first enters the screen hole corresponding to the insert rod on the screening cylinder, pushing away the impurities clogging the screen holes. Then the insert rod returns to its original position, and the screening cylinder rotates again. This process is repeated until the other screen holes on the screening cylinder are aligned with the insert rod, allowing for the cleaning of impurities clogging those other screen holes. After the impurities are cleaned, a sealing rod is positioned directly below the lifting plate. The lifting plate then moves the insert rod downwards, causing it to push the upper sealing rod downwards. This compresses the spring located above the screening cylinder, causing the connecting rod to push the lower sealing rod downwards and stretch the spring located below the screening cylinder. After the lower sealing rod moves outside the screening cylinder, the impurities inside the screening cylinder can be discharged through the opening at the bottom of the screening cylinder. This invention can effectively clean the impurities clogging the screen holes on the screening cylinder and allow the cleaned impurities to be effectively discharged without manual operation by the staff, thus reducing the labor intensity of the workers. Attached Figure Description
[0008] Figure 1 This is a schematic diagram of the structure of this utility model from a frontal sectional view;
[0009] Figure 2 for Figure 1 A magnified structural diagram at point A.
[0010] In the diagram: 1. Box body; 2. Screening cylinder; 21. Motor; 3. Feed pipe; 31. Feed hopper; 4. Sealing rod; 41. Connecting rod; 42. Connecting plate; 43. Spring; 44. Limiting rod; 45. Folding tube; 46. Sleeve; 5. Lifting plate; 51. Insert rod; 52. Electric telescopic rod; 6. Baffle; 7. Connecting frame; 71. Rotating rod; 72. Discharge plate; 8. Discharge port; 9. Vibrator. Detailed Implementation
[0011] The specific content of this utility model will be described in detail below with reference to the accompanying drawings and embodiments.
[0012] like Figure 1 and Figure 2As shown, this utility model provides a mixed soil aggregate screening device, including a box body 1, a rotatable screening cylinder 2 inside the box body 1, a motor 21 for driving the screening cylinder 2 inside the box body 1, and a feed pipe 3 penetrating one side of the axis of the screening cylinder 2 on the box body 1; the top and bottom of the screening cylinder 2 are both provided with openings, and a sealing rod 4 that can be moved out of the opening is provided in the opening; a connecting rod 41 is fixed between the two sealing rods 4; a connecting plate 42 fixed inside the screening cylinder 2 is provided on both sides of the sealing rod 4; a spring 43 is fixed between the connecting plate 42 and the sealing rod 4; a lifting plate 5 is provided above the screening cylinder 2; an insertion rod 51 that can be inserted into the screen hole on the screening cylinder 2 is fixed at the bottom of the lifting plate 5; and an electric telescopic rod 52 for driving the lifting plate 5 is provided on the box body 1. The feed pipe 3 is rotatably connected to the screening cylinder 2. After the motor 21 is started to rotate the screening cylinder 2, when the fine aggregate enters the screening cylinder 2 through the feed pipe 3, the fine aggregate in the screening cylinder 2 can be effectively screened as the screening cylinder 2 rotates, allowing qualified fine aggregate to fall downward through the screen holes on the screening cylinder 2. After the fine aggregate is screened, the screening cylinder 2 can be rotated so that the screen holes on the screening cylinder 2 are sequentially positioned directly below the insertion rod 51 (there is one set of insertion rod 51 and several sets of screen holes on the screening cylinder 2, with the number of screen holes in each set being the same as the number of insertion rods 51). Then, the electric telescopic rod 52 is started to drive the lifting plate 5 to repeatedly raise and lower the insertion rod 51. After the insertion rod 51 is inserted into the screen hole, the impurities blocking the screen hole can be pushed out. The fixed end of the electric telescopic rod 52 is fixed to the housing 1, and the telescopic end of the electric telescopic rod 52 is connected to the lifting plate 5. When half of the screen holes on the screening cylinder 2 are open... After the screening is completed, both sealing rods 4 are located directly below the insertion rod 51. At this time, the insertion rod 51 moves downward, which pushes the upper sealing rod 4 downward, causing the connecting rod 41 to drive the lower sealing rod 4 downward. The spring 43 connected to the lower sealing rod 4 is stretched, while the spring 43 connected to the upper sealing rod 4 is compressed. When the lower sealing rod 4 moves to the opening at the bottom of the screening cylinder 2, the opening is opened, and the impurities in the screening cylinder 2 can be discharged, completing the cleaning of the impurities in the screening cylinder 2. After the screening cylinder 2 has screened the fine aggregate for a certain period of time, if there are too many large particles of impurities accumulated in the screening cylinder 2, the conveying of the fine aggregate can be paused, and the two sealing rods 4 can be moved downward to discharge the impurities. Then the conveying of the fine aggregate can continue. This operation process is simple and fast, and the impact on the screening efficiency of the fine aggregate is negligible.
[0013] like Figure 1As shown, the bottom of the box 1 has a discharge port 8, and a connecting frame 7 is fixed to the bottom of the box 1. A rotating rod 71 is rotatably connected to the inner side of the connecting frame 7, and a discharge plate 72 is fixed on the rotating rod 71. The connecting frame 7 is U-shaped, and a servo motor (not shown in the figure) for driving the rotating rod 71 is fixed on the connecting frame 7. The rotating shaft of the servo motor is fixed to one end of the rotating rod 71. When the driving motor drives the rotating rod 71 to rotate at a certain angle, the discharge plate 72 can be tilted. When the right side of the discharge plate 72 is lower than the left side, it can be used for the fixed-point discharge of fine aggregate with screening. When the left side of the discharge plate 72 is lower than the right side, it can be used for the discharge of large particles of impurities. The discharge port 8 can discharge large particles of impurities and fine aggregates to the outside of the box 1.
[0014] like Figure 1 and Figure 2 As shown, the connecting plate 42 is L-shaped, and a limiting rod 44, which is slidably connected to the sealing rod 4, passes through the connecting plate 42 and is located inside the spring 43. A folded tube 45, which covers the spring 43, is fixed to the inner side of the connecting plate 42, and a sleeve 46, which covers the portion of the limiting rod 44 outside the connecting plate 42, is fixed to the connecting plate 42. The limiting rod 44 can increase the stability of the spring 43 and the stability of the sealing rod 41 when it moves; the folded tube 45 can prevent fine aggregate from contacting the spring 43, and the sleeve 46 can prevent fine aggregate from contacting the limiting rod 44.
[0015] like Figure 1 As shown, two baffles 6 are fixed inside the housing 1, and the screening cylinder 2 is located between the two baffles 6. The main body of the motor 21 is fixed inside the housing 1, and a connecting column is fixed on the rotating shaft of the motor 21, passing through one of the baffles 6 and fixed to one side of the screening cylinder 2. The baffles 6 can prevent the fine aggregate screened in the screening cylinder 2 from accumulating at the bottom of the housing 1, so that the fine aggregate screened in the screening cylinder 2 and the impurities discharged later can be discharged through the discharge port 8 at the bottom of the housing 1. After the motor 21 is started, the rotating shaft of the motor 21 can drive the screening cylinder 2 to rotate through the connecting column.
[0016] like Figure 1 As shown, a feed hopper 31 is fixed on one side of the housing 1, and the end of the feed pipe 3 away from the screening cylinder 2 passes through the housing 1 and is connected to the feed hopper 31. Fine aggregate can be fed into the feed hopper 31, and then discharged into the screening cylinder 2 through the feed pipe 3.
[0017] like Figure 1 As shown, a vibrator 9 is fixed inside the housing 1 via a support plate, and the vibrating end of the vibrator 9 is connected to the feed pipe 3. After the vibrator 9 is started, it can cause the feed pipe 3 to vibrate, preventing fine aggregate from clogging inside the feed pipe 3.
[0018] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A mixed soil aggregate screening device, comprising a housing (1), characterized in that: The box (1) is equipped with a rotatable screening cylinder (2), and the box (1) is equipped with a motor (21) for driving the screening cylinder (2). The box (1) is equipped with a feed pipe (3) that passes through the center of the axis on one side of the screening cylinder (2). The top and bottom of the screening cylinder (2) are both open, and a sealing rod (4) that can be moved out of the opening is provided in the opening. A connecting rod (41) is fixed between the two sealing rods (4). A connecting plate (42) fixed in the screening cylinder (2) is provided on both sides of the sealing rod (4). A spring (43) is fixed between the connecting plate (42) and the sealing rod (4). A lifting plate (5) is provided above the screening cylinder (2). A rod (51) that can be inserted into the screen hole on the screening cylinder (2) is fixed at the bottom of the lifting plate (5). An electric telescopic rod (52) for driving the lifting plate (5) is provided on the box (1).
2. The mixed soil aggregate screening device according to claim 1, characterized in that: The bottom of the box (1) is provided with a feeding port (8), and a connecting frame (7) is fixed at the bottom of the box (1). A rotating rod (71) is rotatably connected to the inner side of the connecting frame (7), and a feeding plate (72) is fixed on the rotating rod (71).
3. The mixed soil aggregate screening device according to claim 1, characterized in that: The connecting plate (42) is L-shaped, and a limiting rod (44) that is slidably connected to and connected to the sealing rod (4) passes through the connecting plate (42). The limiting rod (44) is located inside the spring (43). A folded tube (45) that covers the spring (43) is fixed inside the connecting plate (42), and a sleeve (46) that covers the part of the limiting rod (44) outside the connecting plate (42) is fixed on the connecting plate (42).
4. The mixed soil aggregate screening device according to claim 1, characterized in that: The box (1) has two baffles (6) fixed inside, the screening cylinder (2) is located between the two baffles (6), the main body of the motor (21) is fixed inside the box (1), and a connecting column is fixed on the rotating shaft of the motor (21) that passes through a baffle (6) and is fixed to one side of the screening cylinder (2).
5. The mixed soil aggregate screening device according to claim 1, characterized in that: A feed hopper (31) is fixed on one side of the box (1), and the end of the feed pipe (3) away from the screening cylinder (2) passes through the box (1) and is connected to the feed hopper (31).
6. The mixed soil aggregate screening device according to claim 1, characterized in that: A vibrator (9) is fixed inside the housing (1) by a bearing plate, and the vibrating end of the vibrator (9) is connected to the feed pipe (3).