An adjustable sand screening device
By adjusting the combination of the screening angle and the high-frequency vibration mechanism, the problems of unstable screening efficiency and sand accumulation in traditional sand screening devices have been solved, achieving efficient separation and production of fine and coarse sand.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIAONING PENGYUAN CONSTR ENG CO LTD
- Filing Date
- 2025-08-08
- Publication Date
- 2026-07-21
AI Technical Summary
Traditional sand screening devices have a fixed screening angle that cannot be flexibly adjusted, resulting in unstable screening efficiency, poor separation of fine and coarse sand, and a single screen vibration mode that leads to sand accumulation and low screen penetration, which cannot meet the needs of high-efficiency production.
The screen's rotation angle is adjusted by a linkage structure of cylinder, rack, gear and rotating frame. Combined with elastic elements, protrusions and motor-driven rotating roller vibration mechanism, the screen vibrates at a high frequency and regularly, ensuring that the sand is screened at the appropriate angle and separated and collected by coarse and fine sand guide boxes.
It improves the adaptability of sand screening devices to different types of sand, enhances the separation effect of fine and coarse sand, improves screening efficiency and quality, and meets the high-efficiency production needs of the construction and mining industries.
Smart Images
Figure CN224525270U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building engineering technology, and in particular to an adjustable sand screening device. Background Technology
[0002] In material handling processes in industries such as construction and mining, sand screening is a common and crucial step used to separate sand of different particle sizes. Traditional sand screening devices have several shortcomings. On the one hand, the screening angle is mostly fixed, making it difficult to adjust flexibly according to sand characteristics (such as moisture content and particle size distribution differences), resulting in unstable screening efficiency, poor separation of fine and coarse sand, and affecting the quality of subsequent processes. On the other hand, the screen vibration mode is singular, relying only on simple gravity or conventional vibration sources, which makes it easy for sand to accumulate on the screen, resulting in low fine sand penetration and time-consuming screening, failing to meet the needs of high-efficiency production.
[0003] Therefore, we propose an adjustable sand screening device. Utility Model Content
[0004] The main objective of this invention is to provide an adjustable sand screening device to prevent problems such as unstable screening efficiency, poor separation of fine and coarse sand, and impact on the quality of subsequent processes caused by a fixed screening angle that cannot be flexibly adjusted according to the characteristics of the sand. It also prevents problems caused by a single screen vibration mode, relying solely on simple gravity or conventional vibration sources, resulting in sand accumulation on the screen, low fine sand penetration, long screening time, and inability to meet the demands of high-efficiency production. This invention improves the adaptability of the sand screening device to different types of sand, enhances the separation effect of fine and coarse sand, and improves screening efficiency and quality to meet the needs of high-efficiency production in industries such as construction and mining. It effectively solves the problems in the background technology.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] An adjustable sand screening device includes a base plate, two symmetrical support plates fixedly connected to the top of the base plate, a first rotating rod rotatably connected between the two support plates, a gear fixedly connected to the middle of the outer periphery of the first rotating rod, a support platform fixedly connected to the top of the base plate, a cylinder fixedly installed at the top of the support platform, a rack fixedly connected to the telescopic end of the cylinder, the rack meshing with the gear, two symmetrical rotating frames fixedly connected to the outer periphery of the first rotating rod, a fine sand guide box fixedly connected to the top of the two rotating frames, a screening mechanism provided on the fine sand guide box, the screening mechanism including a screen, a fixed block, an elastic element, a protrusion, a motor, a second rotating rod, a support rod, a support block, and a rotating roller.
[0007] By adopting the above technical solution, when it is necessary to adjust the screening angle of the sand screening device to adapt to different sand screening requirements, the cylinder is started. The extension end of the cylinder pushes the rack to make linear reciprocating motion. Since the rack meshes with the gear, the gear will rotate with the movement of the rack, thereby driving the first rotating rod to rotate. The rotating frame on the outer periphery of the first rotating rod will rotate accordingly, realizing the angle adjustment of the fine sand guide box and the screening mechanism on it, so that the screen is at a suitable tilt angle, which makes it easy for the sand to be screened by its own gravity and subsequent screening.
[0008] Furthermore, the fixing block is fixedly connected to the top of the fine sand feed box and near the four corners, the elastic element is fixedly connected to the top of the fixing block, and the screen is fixedly connected to the top of the elastic element.
[0009] By adopting the above technical solution, the sand is conveyed to the screen, the fixed block provides a stable installation base for the elastic element, the elastic element supports the screen, and when the screen is impacted by the sand and acted upon by subsequent rotating rollers and other components, the elastic element can cooperate with the screen to perform reciprocating elastic vibration, which helps fine sand in the sand to fall through the mesh of the screen, while coarse sand remains on the screen. The initial separation of coarse and fine sand is achieved by utilizing the vibration and elasticity of the screen itself.
[0010] Furthermore, the protrusion is fixedly connected to the bottom end of the screen, and multiple protrusions are provided.
[0011] By adopting the above technical solution, multiple protrusions are distributed at the bottom of the screen. When the subsequent motor drives the rotating roller to rotate, the rotating roller will periodically contact and separate from the protrusions. During the rotation of the rotating roller, the protrusions will be subjected to intermittent pushing and squeezing forces. In conjunction with the elastic element, the screen will produce more regular vibration, which will enhance the sand screening effect and allow fine sand to pass through the screen more efficiently, avoiding the accumulation of sand and affecting the screening efficiency.
[0012] Furthermore, the motor is fixedly connected to the bottom of the fine sand guide box, and the second rotating rod is fixedly connected to the output end of the motor and rotates through the fine sand guide box to extend upward.
[0013] By adopting the above technical solution, the motor is turned on, and the output end of the motor rotates, which drives the second rotating rod to rotate. The second rotating rod, as a power transmission component, transmits the power of the motor upward to the support rod and other components, providing a power source for the rotation of the rotating roller, so that the rotating roller can rotate continuously. Together with the protrusion, it realizes the vibration drive of the screen, ensuring the power needs of sand screening operations.
[0014] Furthermore, the support rod is fixedly connected to the output end of the second rotating rod, and the rotating roller is rotatably connected to the top of the support rod through the support block and is symmetrically arranged in two sets. The rotating roller cooperates with the protrusion.
[0015] By adopting the above technical solution, the rotation of the second rotating rod drives the rotation of the support rod, and the rotating roller connected to the top of the support rod through the support block makes a circular motion. During the rotation of the rotating roller, it continuously contacts and separates from the protrusion at the bottom of the screen. By using the rolling of the rotating roller and the force on the protrusion, the driving force for the screen vibration is continuously provided, so that the screen maintains a high-frequency and stable vibration state, so that the sand is fully turned over and screened on the screen, the fine sand falls quickly, and the coarse sand moves to one end of the screen.
[0016] Furthermore, a coarse sand guide box is fixedly connected to one end of the fine sand guide box, and the coarse sand guide box is located at the lower part of one end of the screen.
[0017] By adopting the above technical solution, after being screened, the coarse sand will move towards one end of the screen due to its own gravity and the vibration of the screen, and eventually fall from one end of the screen into the coarse sand guide box located at the lower end of the screen. The coarse sand guide box guides the coarse sand to the designated collection position, while the fine sand passes through the screen, is collected by the fine sand guide box and guided to the subsequent fine sand collection stage, thus realizing the separate collection of coarse and fine sand.
[0018] Compared with the prior art, the present invention has the following beneficial effects:
[0019] (1) This utility model provides an adjustable sand screening device. With the help of the linkage structure of cylinder, rack, gear and rotating frame, the angle of fine sand guide box and screen can be easily adjusted. For sand with different moisture and particle size distribution, the tilt angle of the screen can be precisely adjusted, so that the sand can be screened efficiently by its own gravity and subsequent vibration, improving the adaptability to complex working conditions and ensuring screening quality and efficiency.
[0020] (2) The present invention provides an adjustable sand screening device. In the screening mechanism, the elastic element, the protrusion, the motor and the rotating roller work together to make the screen vibrate at a high frequency and regularly, so as to avoid the accumulation of sand and greatly improve the fine sand penetration rate. At the same time, the coarse sand guide box and the fine sand guide box have clear division of labor, so as to realize the precise separation and collection of coarse and fine sand, reduce mixing, reduce subsequent sorting costs, and improve the economy and practicality of the overall sand screening operation. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the structure of an adjustable sand screening device according to the present invention.
[0022] Figure 2 This is a partial cross-sectional view of the screening mechanism of an adjustable sand screening device according to this utility model.
[0023] Figure 3 This utility model relates to an adjustable sand screening device. Figure 2 Enlarged view of point A in the middle.
[0024] In the diagram: 1. Base plate; 2. Support plate; 3. First rotating rod; 4. Gear; 5. Support platform; 6. Cylinder; 7. Rack; 8. Rotating frame; 9. Fine sand guide box; 10. Screening mechanism; 11. Screen; 12. Fixed block; 13. Elastic element; 14. Protrusion; 15. Motor; 16. Second rotating rod; 17. Support rod; 18. Support block; 19. Rotating roller; 20. Coarse sand guide box. Detailed Implementation
[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0026] To prevent problems such as unstable screening efficiency, poor separation of fine and coarse sand, and negative impacts on subsequent processes caused by a fixed screening angle that cannot be flexibly adjusted according to sand characteristics; and to prevent issues such as sand accumulation on the screen, low fine sand penetration, long screening times, and inability to meet high-efficiency production requirements caused by a single screen vibration mode relying solely on simple gravity or conventional vibration sources, this paper aims to improve the adaptability of sand screening equipment to different types of sand, enhance the separation effect of fine and coarse sand, and improve screening efficiency and quality to meet the high-efficiency production needs of industries such as construction and mining. Figure 1 , Figure 2 , Figure 3 As shown, an adjustable sand screening device includes a base plate 1. Two symmetrical support plates 2 are fixedly connected to the top of the base plate 1. A first rotating rod 3 is rotatably connected between the two support plates 2. A gear 4 is fixedly connected to the middle of the outer periphery of the first rotating rod 3. A support platform 5 is fixedly connected to the top of the base plate 1. A cylinder 6 is fixedly installed on the top of the support platform 5. A rack 7 is fixedly connected to the telescopic end of the cylinder 6. The rack 7 meshes with the gear 4. Two symmetrical rotating frames 8 are fixedly connected to the outer periphery of the first rotating rod 3. A fine sand guide box 9 is fixedly connected to the top of the two rotating frames 8. A screening mechanism 10 is provided on the fine sand guide box 9. The screening mechanism 10 includes a screen 11, a fixed block 12, an elastic element 13, a protrusion 14, a motor 15, a second rotating rod 16, a support rod 17, a support block 18, and a rotating roller 19.
[0027] When in use, when it is necessary to adjust the screening angle of the sand screening device to adapt to different sand screening requirements, the cylinder 6 is started. The telescopic end of the cylinder 6 pushes the rack 7 to make linear reciprocating motion. Since the rack 7 meshes with the gear 4, the gear 4 will rotate with the movement of the rack 7, which in turn drives the first rotating rod 3 to rotate. The rotating frame 8 on the outer periphery of the first rotating rod 3 rotates accordingly, realizing the angle adjustment of the fine sand guide box 9 and the screening mechanism 10 on it, so that the screen 11 is at a suitable tilt angle, which makes it easy for the sand to be screened by its own gravity and subsequent screening.
[0028] For example, such as Figure 2 As shown, the present invention also includes the following: the fixing block 12 is fixedly connected to the top of the fine sand guide box 9 and near the four corners; the elastic element 13 is fixedly connected to the top of the fixing block 12; and the screen 11 is fixedly connected to the top of the elastic element 13.
[0029] During use, the sand is conveyed onto the screen 11. The fixing block 12 provides a stable mounting base for the elastic element 13. The elastic element 13 supports the screen 11. When the screen 11 is impacted by the sand and subjected to the action of subsequent components such as the rotating roller, the elastic element 13 can cooperate with the screen 11 to perform reciprocating elastic vibration, which helps the fine sand in the sand to fall through the mesh of the screen 11, while the coarse sand remains on the screen 11. The initial separation of coarse and fine sand is achieved by utilizing the vibration and elasticity of the screen itself.
[0030] For example, such as Figure 2 , Figure 3 As shown, the present invention also includes a protrusion 14 fixedly connected to the bottom end of the screen 11, and the protrusion 14 is provided in multiple forms.
[0031] During use, multiple protrusions 14 are distributed at the bottom of the screen 11. When the subsequent motor drives the rotating roller 19 to rotate, the rotating roller 19 will periodically contact and separate from the protrusions 14. During the rotation of the rotating roller 19, intermittent pushing and squeezing forces are generated on the protrusions 14. In conjunction with the elastic element 13, the screen 11 will produce more regular vibration, which will enhance the sand screening effect and allow fine sand to pass through the screen more efficiently, avoiding the accumulation of sand and affecting the screening efficiency.
[0032] For example, such as Figure 2 As shown, the present invention also includes a motor 15 fixedly connected to the bottom end of the fine sand guide box 9, and a second rotating rod 16 fixedly connected to the output end of the motor 15 and rotating through the fine sand guide box 9 and extending upward.
[0033] When in use, the motor 15 is turned on, and the output end of the motor 15 rotates, driving the second rotating rod 16 to rotate. The second rotating rod 16, as a power transmission component, transmits the power of the motor upward to the support rod 17 and other components, providing a power source for the rotation of the rotating roller 19, so that the rotating roller 19 can rotate continuously. Together with the protrusion 14, it realizes the vibration drive of the screen 11, ensuring the power needs of sand screening operations.
[0034] For example, such as Figure 2 , Figure 3 As shown, the present invention also includes the following: the support rod 17 is fixedly connected to the output end of the second rotating rod 16; the rotating roller 19 is rotatably connected to the top of the support rod 17 through the support block 18 and is provided in two symmetrical sets; the rotating roller 19 cooperates with the protrusion 14.
[0035] In use, the second rotating rod 16 rotates, driving the support rod 17 to rotate. The top of the support rod 17 is connected to the rotating roller 19 via the support block 18, which then makes a circular motion. During the rotation of the rotating roller 19, it continuously contacts and separates from the protrusion 14 at the bottom of the screen 11. By utilizing the rolling of the rotating roller 19 and the force exerted on the protrusion 14, the driving force for the vibration of the screen 11 is continuously provided, allowing the screen 11 to maintain a high-frequency and stable vibration state, so that the sand is fully turned over and screened on the screen, with fine sand falling quickly and coarse sand moving towards one end of the screen 11.
[0036] For example, such as Figure 1 As shown, the present invention also includes a coarse sand guide box 20 fixedly connected to one end of the fine sand guide box 9, and the coarse sand guide box 20 is located at the lower part of one end of the screen 11.
[0037] During use, after being screened by screen 11, the coarse sand will move towards one end of screen 11 due to its own weight and the vibration of the screen, and eventually fall from one end of screen 11 into the coarse sand guide box 20 located at the lower part of one end of screen 11. The coarse sand guide box 20 guides the coarse sand to the designated collection position, while the fine sand passes through screen 11 and is collected by fine sand guide box 9 and guided to the subsequent fine sand collection stage, thus realizing the separate collection of coarse and fine sand.
[0038] It should be noted that this utility model is an adjustable sand screening device. First, according to the sand screening requirements, the cylinder 6 is started, which drives the first rotating rod 3 and the rotating frame 8 to rotate through the meshing transmission of the rack 7 and gear 4. The angle of the fine sand guide box 9 and the screening mechanism 10 is adjusted so that the screen 11 is in a suitable tilt state. Then, sand is put into the screen 11. The elastic element 13 supported by the fixed block 12 cooperates with the subsequent vibration to make the screen 11 vibrate and screen initially. The fine sand passes through the screen and falls into the fine sand guide box 9. Coarse sand is retained, and then the motor 15 is turned on. Through the second rotating rod 16 and the support rod 17, the rotating roller 19 makes a circular motion, periodically contacting and disengaging with the protrusion 14 at the bottom of the screen 11. With the help of the elastic element 13, the screen 11 vibrates at a high frequency and in a stable manner, which strengthens the screening and causes the fine sand to fall faster and the coarse sand to move towards one end of the screen 11. Finally, the coarse sand falls into the coarse sand guide box 20 at the bottom of one end of the screen 11 and is guided and collected, while the fine sand is collected by the fine sand guide box 9, completing the coarse and fine sand separation and screening operation.
[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. An adjustable sand screening device, comprising a base plate (1), characterized in that, The top of the base plate (1) is fixedly connected to two symmetrical support plates (2), and a first rotating rod (3) is rotatably connected between the two support plates (2). A gear (4) is fixedly connected to the middle of the outer periphery of the first rotating rod (3). A support platform (5) is fixedly connected to the top of the base plate (1), and a cylinder (6) is fixedly installed on the top of the support platform (5). A rack (7) is fixedly connected to the telescopic end of the cylinder (6), and the rack (7) meshes with the gear (4). Two symmetrical rotating frames (8) are fixedly connected to the outer periphery of the first rotating rod (3). A fine sand guide box (9) is fixedly connected to the top of the two rotating frames (8). A screening mechanism (10) is provided on the fine sand guide box (9). The screening mechanism (10) includes a screen (11), a fixed block (12), an elastic element (13), a protrusion (14), a motor (15), a second rotating rod (16), a support rod (17), a support block (18), and a rotating roller (19).
2. The adjustable sand screening device according to claim 1, characterized in that: The fixing block (12) is fixedly connected to the top of the fine sand guide box (9) and near the four corners. The elastic element (13) is fixedly connected to the top of the fixing block (12). The screen (11) is fixedly connected to the top of the elastic element (13).
3. The adjustable sand screening device according to claim 1, characterized in that: The protrusion (14) is fixedly connected to the bottom end of the screen (11), and there are multiple protrusions (14).
4. The adjustable sand screening device according to claim 1, characterized in that: The motor (15) is fixedly connected to the bottom of the fine sand guide box (9), and the second rotating rod (16) is fixedly connected to the output end of the motor (15) and rotates through the fine sand guide box (9) and extends upward.
5. An adjustable sand screening device according to claim 1, characterized in that: The support rod (17) is fixedly connected to the output end of the second rotating rod (16). The rotating roller (19) is rotatably connected to the top of the support rod (17) through the support block (18) and is provided in two symmetrical sets. The rotating roller (19) cooperates with the protrusion (14).
6. The adjustable sand screening device according to claim 1, characterized in that: One end of the fine sand guide box (9) is fixedly connected to a coarse sand guide box (20), which is located at the lower part of one end of the screen (11).