Aggregate screening device for prefabricating concrete tower drum
By combining a reciprocating mechanism and an inclined screening device, rapid grading and screening of aggregates is achieved, solving the problem of low efficiency in traditional vibrating screening and improving screening efficiency and accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SINOHYDRO BUREAU 4 JIUQUAN NEW ENERGY EQUIPCO
- Filing Date
- 2025-08-18
- Publication Date
- 2026-07-24
AI Technical Summary
Traditional aggregate screening equipment suffers from low efficiency due to vibrating screening, resulting in slow aggregate screening speed.
The reciprocating mechanism drives the screen shell to move back and forth. Combined with the inclined screening device, the aggregate is rapidly screened by the eccentric rotation of the rollers and the extrusion of the slide bar. The aggregate is then graded and screened through the grading screen holes of the screen plate.
It improves the efficiency and accuracy of aggregate screening, shortens the residence time of aggregate on the screen plate, and reduces the generation of defective products.
Smart Images
Figure CN224542320U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of concrete tower manufacturing technology, and relates to a concrete tower, and more particularly to an aggregate screening device for prefabricated concrete towers. Background Technology
[0002] Aggregates, as an indispensable key component in concrete and mortar, play a dual role as both load-bearing skeleton and filler material, directly affecting the mechanical properties and durability of concrete. Based on particle size, aggregates can be divided into coarse aggregates and fine aggregates, each with its unique uses and importance. The addition of coarse aggregates effectively enhances the compressive strength of concrete, enabling it to withstand greater loads; while fine aggregates play a crucial role in improving the density and impermeability of concrete, ensuring its stability and durability under various environmental conditions.
[0003] Aggregate screening is an important physical process that uses specialized screening equipment to classify aggregates according to different particle size grades to meet the quality standards of specific engineering materials. In the actual concrete production process, traditional screening equipment often uses vibration to screen aggregates. However, screening by vibration causes the material to move and be screened only by vibration, resulting in low screening efficiency and slow aggregate screening speed. Therefore, there is an urgent need for an aggregate screening device for precast concrete towers to solve these problems. Utility Model Content
[0004] The purpose of this utility model is to address the aforementioned problems in existing technologies by proposing an aggregate screening device for precast concrete towers. The technical problem this utility model aims to solve is: how to achieve rapid screening of aggregates and improve screening efficiency.
[0005] The objective of this utility model can be achieved through the following technical solutions: A concrete tower precast aggregate screening device includes a base, an L-shaped fixing frame above the base, a screening shell above the L-shaped fixing frame, a screening mechanism for screening aggregate inside the screening shell, and a reciprocating mechanism for moving and rapidly screening the screening shell at the bottom of the screening shell. The reciprocating mechanism includes a fixing plate fixed to the adjacent side of two L-shaped fixing frames, a rotating rod rotatably connected to the top of the fixing plate, a rotating disk fixed to the top of the outer wall of the rotating rod, a roller eccentrically rotatably connected to the top of the rotating disk, mounting blocks fixed at both ends of the top of the fixing plate, and through grooves opened at both ends of the two mounting blocks, with sliding rods slidably installed inside the through grooves. Second connecting blocks are fixed to the top of the two sliding rods that are far apart from each other, and the two second connecting blocks are fixed to the bottom ends of the screening shell.
[0006] The working principle of this utility model is as follows: the rollers will squeeze the inner wall of the long chute block and move the long chute block, which will then drive the slide rod to move back and forth, and drive the screening shell to move back and forth, which can screen the aggregate more quickly.
[0007] The two slide bars are fixed with the same long slide block on their sides that are close to each other, and the roller is located inside the long slide block; A motor is installed at the bottom of the fixed plate, and the output shaft of the motor is fixedly connected to the bottom of the rotating rod.
[0008] The screening mechanism includes a screen plate fixed to the top of the inner wall of the screening shell. A first screen hole is opened at the top and bottom of one end of the screen plate, and a second screen hole is opened at the top and bottom of the other end of the screen plate. The diameter of the first screen hole is smaller than that of the second screen hole. A feed inlet is fixed at the top end of the screening shell. Both ends of the top of the sieve plate are fixed with guide plates, and both guide plates are inclined. The bottom center and one end of the inner wall of the screening shell are fixed with inclined plates, and two interconnected discharge ports are opened on one side of the screening shell, and the two discharge ports correspond to one side of the two inclined plates respectively. The bottom four corners of the screening shell are fixed with first connecting blocks. The bottom of the inner wall of the two L-shaped fixing frames is provided with a sliding groove, and two sliders are slidably arranged inside the sliding groove. The multiple first connecting blocks are respectively fixedly connected to the top of the multiple sliders.
[0009] Using the above structure, the first and second screen holes at both ends of the screen plate can classify and screen the aggregate. The screened aggregate will then fall into the bottom of the screen shell and be discharged through the inclined plate. Both L-shaped brackets have support legs fixed to their bottoms, and the bottom of the support legs is fixed to the top of the base, and the L-shaped brackets are set at an angle.
[0010] By adopting the above structure and tilting the L-shaped fixing frame, the device is in an inclined state, which can quickly screen the aggregate and improve the screening efficiency.
[0011] Compared with the prior art, the aggregate screening device for precast concrete towers of this utility model has the following advantages: 1. In this utility model, a reciprocating mechanism is provided. When the rotating rod drives the rotating disk to rotate, it will drive the roller to rotate eccentrically. Then, the roller will move inside the long strip slide block to squeeze it. Then, the long strip slide block will drive the slide rod to move back and forth, and drive the screening shell to move back and forth. The aggregate on the surface of the screen plate will be screened faster due to the reciprocating movement. The residence time of the aggregate on the screen plate is shortened, and screening can be completed more quickly, improving the overall work efficiency, improving the screening accuracy, and reducing the generation of unqualified products. Attached Figure Description
[0012] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a side view of the reciprocating mechanism in this utility model; Figure 3 This is a partial structural diagram of the reciprocating mechanism in this utility model; Figure 4 This is a partial structural diagram of the L-shaped fixing frame in this utility model; Figure 5 This is a partial exploded view of the screening mechanism in this utility model.
[0013] In the diagram, 1 is the base; 2 is the support leg; 201 is the L-shaped fixing frame; 202 is the chute; 203 is the slider; 3 is the screening shell; 301 is the feed inlet; 302 is the screen plate; 303 is the guide plate; 304 is the first screen hole; 305 is the second screen hole; 306 is the discharge port; 307 is the inclined plate; 308 is the first connecting block; 4 is the fixing plate; 401 is the rotating disk; 402 is the motor; 403 is the slide rod; 404 is the second connecting block; 405 is the rotating rod; 406 is the mounting block; 407 is the long chute block; and 408 is the roller. Detailed Implementation
[0014] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0015] like Figures 1-5As shown, a concrete tower precast aggregate screening device includes a base 1, an L-shaped fixing frame 201 above the base 1, a screening shell 3 above the L-shaped fixing frame 201, a screening mechanism for screening aggregate inside the screening shell 3, and a reciprocating mechanism for moving and rapidly screening the screening shell 3 at the bottom of the screening shell 3. The reciprocating mechanism includes a fixing plate 4 fixed to the side of the two L-shaped fixing frames 201 that are close to each other. A rotating rod 405 is rotatably connected to the top of the fixing plate 4. A rotating disk 401 is fixed to the top of the outer wall of the rotating rod 405. A roller 408 is eccentrically rotatably connected to the top of the rotating disk 401. Mounting blocks 406 are fixed to both ends of the top of the fixing plate 4. Both ends of the two mounting blocks 406 are provided with through grooves. Sliding rods 403 are slidably provided inside the through grooves. Second connecting blocks 404 are fixed to the top of the two sliding rods 403 that are far apart from each other. The two second connecting blocks 404 are fixed to the bottom ends of the screening shell 3. Two sliding rods 403 are fixed with the same elongated sliding block 407 on their adjacent sides, and the roller 408 is located inside the elongated sliding block 407. A motor 402 is installed at the bottom of the fixed plate 4, and the output shaft of the motor 402 is fixedly connected to the bottom of the rotating rod 405. The screening mechanism includes a screen plate 302 fixed to the top of the inner wall of the screening shell 3. A first screen hole 304 communicating between the top and bottom of one end of the screen plate 302 is opened, and a second screen hole 305 communicating between the top and bottom of the other end of the screen plate 302 is opened. The diameter of the first screen hole 304 is smaller than the diameter of the second screen hole 305. A feed inlet 301 is fixed at one end of the top of the screening shell 3. Both ends of the top of the sieve plate 302 are fixed with guide plates 303, and both guide plates 303 are inclined. Inclined plates 307 are fixed at the center of the bottom of the inner wall of the screening shell 3 and at one end. Two interconnected discharge ports 306 are opened on one side of the screening shell 3, and the two discharge ports 306 correspond to one side of the two inclined plates 307 respectively. First connecting blocks 308 are fixed at the four corners of the bottom of the screening shell 3. Sliding grooves 202 are opened on the bottom of the inner walls of the two L-shaped fixing frames 201, and two sliders 203 slide inside each sliding groove 202. Multiple first connecting blocks 308 are fixedly connected to the tops of multiple sliders 203 respectively. Support legs 2 are fixed to the bottom of both L-shaped fixing frames 201, and the bottoms of the support legs 2 are fixed to the tops of the base 1. The L-shaped fixing frames 201 are inclined.
[0016] The working principle of this utility model is as follows: In use, the aggregate to be screened is first fed into the top of the screening shell 3 through the feed inlet 301. Since the screening shell 3 is inclined, the aggregate moves along the surface of the screen plate 302 and is guided by the guide plate 303, gradually sliding. When the aggregate passes through the first screen hole 304 and the second screen hole 305, the screen plate 302 performs grading and screening of the aggregate, achieving a rapid screening effect. The screened aggregate then falls into the bottom of the screening shell 3 through the first screen hole 304 and the second screen hole 305, and is discharged from the outlet 306 through the inclined plate 307. The aggregate can then be collected by the operator. During the screening process, the motor 402 is activated. 402 drives the rotating rod 405 to rotate, which in turn drives the rotating disk 401 to rotate. The rotating disk 401 drives the roller 408 to rotate eccentrically. The roller 408 then presses against the inner wall of the long chute block 407, and the long chute block 407 drives the slide rods 403 at both ends to move back and forth. The through slots at both ends of the mounting block 406 guide the slide rods 403. When the slide rods 403 move, they drive the second connecting block 404 to move, and the second connecting block 404 drives the screening shell 3 to move back and forth. When the screening shell 3 moves, it drives the first connecting block 308 to move. The first connecting block 308 drives the slider 203 to slide inside the chute 202, thereby achieving the effect of reciprocating the screening shell 3 and quickly screening the aggregate.
[0017] In summary, in this utility model, by providing a reciprocating mechanism, when the rotating rod 405 drives the rotating disk 401 to rotate, it will drive the roller 408 to rotate eccentrically. Then, the roller 408 will move inside the elongated sliding block 407 to squeeze it. Then, the elongated sliding block 407 will drive the sliding rod 403 to reciprocate, and drive the screening shell 3 to reciprocate. The aggregate on the surface of the screen plate 302 will be screened faster due to the reciprocating movement. The residence time of the aggregate on the screen plate is shortened, and screening can be completed more quickly, improving the overall working efficiency, improving the screening accuracy, and reducing the generation of unqualified products.
[0018] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.
Claims
1. A screening device for aggregates used in the prefabrication of concrete towers, comprising a base (1), characterized in that, An L-shaped fixing frame (201) is provided above the base (1), and a screening shell (3) is provided above the L-shaped fixing frame (201). The screening shell (3) is provided with a screening mechanism for screening aggregates inside, and a reciprocating mechanism for moving and screening the screening shell (3) quickly is provided at the bottom of the screening shell (3). The reciprocating mechanism includes a fixed plate (4) fixed on the side of two L-shaped fixed frames (201) close to each other. A rotating rod (405) is rotatably connected to the top of the fixed plate (4). A rotating disk (401) is fixed to the top of the outer wall of the rotating rod (405). A roller (408) is eccentrically rotatably connected to the top of the rotating disk (401). Mounting blocks (406) are fixed at both ends of the top of the fixed plate (4). Both ends of the two mounting blocks (406) are provided with through grooves. Sliding rods (403) are slidably provided inside the through grooves. Second connecting blocks (404) are fixed to the tops of the two sliding rods (403) that are far apart from each other. The two second connecting blocks (404) are fixed to the bottom ends of the screening shell (3).
2. The aggregate screening device for precast concrete towers according to claim 1, characterized in that, The two slide bars (403) are fixed with the same elongated slide block (407) on their sides that are close to each other, and the roller (408) is located inside the elongated slide block (407).
3. The aggregate screening device for precast concrete towers according to claim 1, characterized in that, The bottom of the fixed plate (4) is equipped with a motor (402), and the output shaft of the motor (402) is fixedly connected to the bottom of the rotating rod (405).
4. The aggregate screening device for precast concrete towers according to claim 3, characterized in that, The screening mechanism includes a screen plate (302) fixed to the top of the inner wall of the screening shell (3). A first screen hole (304) is opened at the top and bottom of one end of the screen plate (302), and a second screen hole (305) is opened at the top and bottom of the other end of the screen plate (302). The diameter of the first screen hole (304) is smaller than the diameter of the second screen hole (305). A feed inlet (301) is fixed at one end of the top of the screening shell (3).
5. The aggregate screening device for precast concrete towers according to claim 4, characterized in that, The top two ends of the sieve plate (302) are fixed with guide plates (303), and the two guide plates (303) are inclined. The bottom center and one end of the inner wall of the screening shell (3) are fixed with inclined plates (307), and two interconnected discharge ports (306) are opened on one side of the screening shell (3), and the two discharge ports (306) correspond to one side of the two inclined plates (307).
6. The aggregate screening device for precast concrete towers according to claim 5, characterized in that, The bottom four corners of the screening shell (3) are fixed with first connecting blocks (308), the bottom of the inner wall of the two L-shaped fixing frames (201) are provided with sliding grooves (202), and two sliders (203) are slidably provided inside the sliding grooves (202), and the multiple first connecting blocks (308) are respectively fixedly connected to the top of the multiple sliders (203).
7. The aggregate screening device for precast concrete towers according to claim 1, characterized in that, The bottom of each of the two L-shaped fixing brackets (201) is fixed with a support leg (2), and the bottom of the support leg (2) is fixed to the top of the base (1), and the L-shaped fixing bracket (201) is set at an angle.