Sand screening machine for construction engineering

Abstract

This utility model discloses a sand screening machine for construction engineering, relating to the technical field of sand screening machines. The utility model includes a frame, with a sand storage funnel at the top of the frame. A sand accumulation funnel is fixedly connected to the top of the frame, and a telescopic column is installed at the top of the sand accumulation funnel. A movable screen frame is fixedly connected to the telescopic end of the telescopic column. A drive motor is installed at the top of the telescopic movable screen frame, and a shaking sand screening mechanism is installed inside the movable screen frame. This utility model utilizes the interaction between components such as the sand screening plate, rebound spring, and semi-circular plate of the shaking sand screening mechanism. The drive motor drives the semi-circular plate to rotate, compressing the force plate and causing the sand screening plate to vibrate up and down. This causes the first and second sand screening meshes to vibrate synchronously, completing the primary and secondary screening. The rebound spring provides elastic support, enhances vibration, and prevents mesh clogging. Qualified sand enters the funnel through the second sand screening mesh, improving screening efficiency and ensuring stable operation.

Description

Technical Field

[0001] This utility model belongs to the technical field of sand screening machines, and in particular relates to a sand screening machine for construction engineering. Background Technology

[0002] A sand screening machine for construction engineering is a device used to screen sand and gravel in construction projects. Its main function is to classify and screen sand and gravel through a screen, remove impurities that do not meet the standards, and ensure the quality and uniform particle size of building materials.

[0003] According to a public disclosure of a sand screening machine for construction engineering (Publication No.: CN223264227U), it includes a feeding box assembly, a sand screening frame assembly, a first transmission mechanism for reciprocating back and forth of the sand screening frame assembly, and a power mechanism. The sand screening frame assembly is located below the feeding box assembly, and the front side of the sand screening frame assembly contacts the output end of the first transmission mechanism. When the power mechanism drives the first transmission mechanism, it drives the sand screening frame assembly to reciprocate back and forth, causing the sand entering the sand screening frame assembly from the feeding box assembly to sway back and forth.

[0004] In the aforementioned application, through the precise cooperation between the feeding box assembly and the sand screening frame assembly, the sand screening machine can continuously perform horizontal shaking screening of the sand on the sand screening frame, thereby achieving a certain degree of particle size classification. However, this design has certain limitations, mainly in two aspects: First, during the screening process, it is impossible to effectively discharge the unqualified sand after screening in a timely manner, causing these unqualified sands to accumulate in the screening frame, thus affecting the efficiency of sand screening. Second, relying solely on horizontal shaking for screening cannot achieve more efficient particle classification, limiting the screening effect of the sand screening frame. As the screening operation proceeds, unqualified sand may gradually accumulate at the mesh openings of the screen, causing mesh blockage, which in turn affects the screening quality and work efficiency. Therefore, we propose a sand screening machine for construction engineering. Utility Model Content

[0005] The purpose of this utility model is to provide a sand screening machine for construction engineering. By designing components such as the sand screening plate, rebound spring and semi-arc plate of the shaking sand screening mechanism, it solves the problems of low screening efficiency, easy clogging of screen and poor equipment stability in the prior art.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a sand screening machine for construction engineering, including a frame, a sand storage funnel at the top of the frame, a fixed conveyor frame inside the frame, a movable conveyor frame on the side of the frame, a sand accumulation funnel fixedly connected to the top of the frame, a telescopic column at the top of the sand accumulation funnel, a movable screen frame fixedly connected to the telescopic end of the telescopic column, a drive motor at the top of the telescopic movable screen frame, a belt drive assembly on the output shaft of the drive motor, and a shaking sand screening mechanism inside the movable screen frame. The shaking sand screening mechanism includes a sand screening plate, which is fixedly connected inside a movable screen frame. A first sand screening mesh is fixedly connected to the top of the sand screening plate, and a second sand screening mesh is fixedly connected to the bottom of the sand screening plate. A rebound spring is fixedly connected to the bottom of the first sand screening mesh, and the end of the rebound spring away from the first sand screening mesh is fixedly connected to the top of the second sand screening mesh. A semi-circular plate is provided on the side of the movable screen frame, and a force-bearing plate is fixedly connected to the top of the sand accumulation funnel. The purpose is to achieve continuous and uniform screening of sand through the cooperation of the sand screening plate and the sand screening mesh, while ensuring that unqualified sand can be effectively discharged during the screening process.

[0007] Furthermore, the interior of the sand screening plate is hollow and reinforced with ribs. This is to improve the vibration transmission effect of the sand screening plate, making the sand screening machine more stable during vibration, avoiding abnormal vibration caused by structural instability, thereby improving screening efficiency and reducing the possibility of screen blockage.

[0008] Furthermore, the number of rebound springs is set to several and evenly distributed inside the sand screening plate, the purpose of which is to ensure that the sand screening mesh can rebound and push the sand a second time.

[0009] Furthermore, the top of the force-bearing plate is located on the displacement trajectory of the semi-arc plate, the purpose of which is to ensure that the force-bearing plate can be squeezed during the rotation of the semi-arc plate.

[0010] Furthermore, a quantitative feeding mechanism is provided at the bottom of the sand storage funnel. The quantitative feeding mechanism includes a rotating motor, which is fixedly connected to the side of the sand storage funnel. The output shaft of the rotating motor is fixedly connected to a rotating shaft, and a distribution baffle is fixedly connected to the circumferential surface of the rotating shaft. The purpose of this mechanism is to control the sand flow inside the sand storage funnel and prevent excessive sand from causing large-area blockage.

[0011] Furthermore, the distribution baffles are arranged in a circumferential array along the axis of rotation. The purpose is to optimize the flow path of the material by increasing the number of baffles and arranging them reasonably, thereby improving the quantitative effect.

[0012] Furthermore, the initial position of the distribution baffle is in contact with the inner wall of the outlet of the sand storage funnel, the purpose of which is to ensure that the sand storage funnel is in a closed state before other devices are started.

[0013] This utility model has the following beneficial effects: This invention utilizes the coordinated operation of components such as the sand screening plate, rebound spring, and semi-circular plate in a shaking sand screening mechanism. A drive motor, via a belt drive assembly, rotates the semi-circular plate, compressing the pressure plate and causing the sand screening plate to vibrate up and down. The sand screening plate employs a hollow, reinforced structure, providing excellent vibration transmission. This causes both screen mesh one and screen mesh two to vibrate synchronously. Screen mesh one performs initial screening of the sand, while qualified fine sand enters screen mesh two for secondary screening. Unqualified sand moves along the screen surface and is discharged from the side. The rebound spring provides elastic support to the screen mesh, enhancing the vibration amplitude and frequency, promoting sand separation, and preventing mesh clogging. The screened qualified sand passes through screen mesh two into a sand accumulation funnel and is then output via a conveyor frame, improving screening efficiency, preventing clogging, and ensuring continuous and stable operation.

[0014] This invention utilizes the coordinated operation of the rotating motor, rotating shaft, and distribution baffle assembly of the quantitative feeding mechanism. Before using this sand screening machine, the motor, drive motor, and telescopic column must be connected to an external power supply and control system, and the flexibility of the moving parts must be checked. During use, first start the motor of the quantitative feeding mechanism, which drives the rotating shaft and distribution baffle to rotate slowly, allowing the sand to fall evenly onto the first screen. The distribution baffle opens and closes intermittently to control the amount of sand fed, preventing excessive material from clogging the screen at once, thus improving screening efficiency and reducing the risk of malfunction.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a structural schematic diagram of the three-dimensional appearance of the frame of this utility model; Figure 2 This is a three-dimensional structural diagram of the sand-storing funnel of this utility model; Figure 3 This is a three-dimensional structural diagram of the shaking sand screening mechanism of this utility model; Figure 4 This is a three-dimensional enlarged structural diagram of the sand screening plate of this utility model; Figure 5 This is a three-dimensional enlarged structural diagram of the quantitative feeding mechanism of this utility model; Figure 6 This utility model Figure 4 A three-dimensional magnified structural diagram of A.

[0018] The attached diagram lists the components represented by each number as follows: 1. Frame; 2. Sand storage funnel; 3. Fixed conveyor frame; 4. Mobile conveyor frame; 5. Sand accumulation funnel; 6. Telescopic column; 7. Mobile screen frame; 8. Drive motor; 9. Belt drive assembly; 10. Shaking sand screening mechanism; 101. Sand screening plate; 102. Sand screening mesh II; 103. Rebound spring; 104. Semi-arc plate; 105. Force plate; 106. Sand screening mesh I; 11. Quantitative feeding mechanism; 111. Rotary motor; 112. Rotating shaft; 113. Distribution baffle. Detailed Implementation

[0019] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1-6 This utility model is a sand screening machine for construction engineering, including a frame 1, a sand storage funnel 2 on the top of the frame 1, a fixed conveyor frame 3 inside the frame 1, a movable conveyor frame 4 on the side of the frame 1, a sand accumulation funnel 5 fixedly connected to the top of the frame 1, a telescopic column 6 on the top of the sand accumulation funnel 5, a movable screen frame 7 fixedly connected to the telescopic end of the telescopic column 6, a drive motor 8 on the top of the telescopic movable screen frame 7, a belt drive assembly 9 on the output shaft of the drive motor 8, and a shaking sand screening mechanism 10 inside the movable screen frame 7. The shaking sand screening mechanism 10 includes a sand screening plate 101, which is fixedly connected inside the movable screen frame 7. A first sand screening mesh 106 is fixedly connected to the top of the sand screening plate 101, and a second sand screening mesh 102 is fixedly connected to the bottom of the sand screening plate 101. A rebound spring 103 is fixedly connected to the bottom of the first sand screening mesh 106. The end of the rebound spring 103 away from the first sand screening mesh 106 is fixedly connected to the top of the second sand screening mesh 102. A semi-arc plate 104 is provided on the side of the movable screen frame 7, and a force-bearing plate 105 is fixedly connected to the top of the sand accumulation funnel 5. The purpose is to achieve continuous and uniform screening of sand through the cooperation of the sand screening plate 101 and the sand screening mesh, while ensuring that unqualified sand can be effectively discharged during the screening process.

[0021] The interior of the sand screening plate 101 is hollow and has reinforcing ribs. The purpose of this is to improve the vibration transmission effect of the sand screening plate 101, so that the sand screening machine is more stable during vibration, avoids abnormal vibration caused by structural instability, thereby improving screening efficiency and reducing the possibility of screen blockage.

[0022] Several rebound springs 103 are provided and evenly distributed inside the sand screening plate 101. The purpose is to ensure that the sand screening mesh 106 can rebound and push the sand a second time.

[0023] The top of the force plate 105 is located on the displacement trajectory of the semi-arc plate 104, the purpose of which is to ensure that the semi-arc plate 104 can squeeze the force plate 105 during the rotation.

[0024] The bottom of the sand storage funnel 2 is provided with a quantitative feeding mechanism 11, which includes a rotating motor 111. The rotating motor 111 is fixedly connected to the side of the sand storage funnel 2. The output shaft of the rotating motor 111 is fixedly connected to a rotating shaft 112. A distribution baffle 113 is fixedly connected to the circumferential surface of the rotating shaft 112. The purpose of this mechanism is to control the sand flow inside the sand storage funnel 2 and prevent excessive sand from causing large-area blockage.

[0025] The distribution baffles 113 are arranged in a circular array along the circumference of the rotating axis 112. The purpose is to optimize the flow path of the material by increasing the number of baffles and arranging them in a reasonable manner, thereby improving the quantitative effect.

[0026] The initial position of the distribution baffle 113 is in contact with the inner wall of the outlet of the sand storage funnel 2. Its purpose is to ensure that the sand storage funnel 2 is in a closed state before other devices are started.

[0027] A specific application of this embodiment is as follows: Before using this sand screening machine, the rotating motor 111, drive motor 8, and telescopic column 6 need to be connected to an external power supply and control system, and the flexibility and smoothness of each moving part should be checked. When using this sand screening machine, first start the rotating motor 111 of the quantitative feeding mechanism 11, which drives the rotating shaft 112 and the distribution baffles 113 of the circumferential array to rotate slowly, so that the sand in the sand storage funnel 2 falls evenly onto the sand screening screen 106 of the moving screen frame 7 according to the set flow rate. The sand discharge is effectively controlled by the intermittent opening and closing of the distribution baffles 113, avoiding excessive material discharge at one time and screen blockage. Then start the drive motor 8, which drives the semi-arc plate 104 to rotate through the belt transmission assembly 9. During the rotation of the semi-arc plate 104, the force plate 105 is squeezed, causing the moving screen frame 7 and the sand screening plate 101 inside to move up and down. The sand screening plate 101 has a hollow reinforcing rib structure inside, which has good vibration. The dynamic conductivity drives the sand screening mesh 106 and sand screening mesh 102 to vibrate synchronously. Sand screening mesh 106 performs preliminary screening of the falling sand. Qualified fine sand falls into sand screening mesh 102 for secondary screening. Unqualified coarse sand and impurities move along the screen surface and are eventually discharged from the side of the screen frame. During the screening process, the semi-arc plate 104 on the side of the moving screen frame 7 periodically squeezes the force plate 105 at the top of the sand accumulation funnel 5 with the movement of the frame, causing the moving screen frame 7 to vibrate slightly up and down. At the same time, multiple rebound springs 103 evenly distributed inside the sand screening plate 101 are continuously compressed and rebounded during the screen vibration, forming elastic support for sand screening mesh 106, enhancing its vibration amplitude and frequency, effectively promoting the separation of sand particles and the self-cleaning of the screen, and preventing the mesh from clogging. The qualified sand after screening falls into the sand accumulation funnel 5 through sand screening mesh 102, and is finally output to the designated position through the fixed conveyor frame 3 or the moving conveyor frame 4.

[0028] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0029] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A sand screening machine for construction engineering, characterized in that, The device includes a frame (1), a sand-collecting funnel (2) on the top of the frame (1), a fixed conveyor frame (3) inside the frame (1), a movable conveyor frame (4) on the side of the frame (1), a sand-accumulating funnel (5) fixedly connected to the top of the frame (1), a telescopic column (6) on the top of the sand-accumulating funnel (5), a movable screen frame (7) fixedly connected to the telescopic end of the telescopic column (6), a drive motor (8) on the top of the telescopic movable screen frame (7), a belt drive assembly (9) on the output shaft of the drive motor (8), and a shaking sand-screening mechanism (10) inside the movable screen frame (7). The shaking sand screening mechanism (10) includes a sand screening plate (101), which is fixedly connected to the inside of the movable screen frame (7). A first sand screening mesh (106) is fixedly connected to the top of the sand screening plate (101), and a second sand screening mesh (102) is fixedly connected to the bottom of the sand screening plate (101). A rebound spring (103) is fixedly connected to the bottom of the first sand screening mesh (106), and the end of the rebound spring (103) away from the first sand screening mesh (106) is fixedly connected to the top of the second sand screening mesh (102). A semi-arc plate (104) is provided on the side of the movable screen frame (7), and a force-bearing plate (105) is fixedly connected to the top of the sand accumulation funnel (5).

2. The sand screening machine for construction engineering according to claim 1, characterized in that, The interior of the sand screening plate (101) is hollow and reinforced with ribs.

3. A sand screening machine for construction engineering according to claim 1, characterized in that, The number of rebound springs (103) is set to several, and they are evenly distributed inside the sand screening plate (101).

4. A sand screening machine for construction engineering according to claim 1, characterized in that, The top of the load-bearing plate (105) is located on the displacement trajectory of the semi-arc plate (104).

5. A sand screening machine for construction engineering according to claim 1, characterized in that, The bottom of the sand storage funnel (2) is provided with a quantitative feeding mechanism (11). The quantitative feeding mechanism (11) includes a rotating motor (111). The rotating motor (111) is fixedly connected to the side of the sand storage funnel (2). The output shaft of the rotating motor (111) is fixedly connected to a rotating shaft (112). The circumferential surface of the rotating shaft (112) is fixedly connected to a distribution baffle (113).

6. A sand screening machine for construction engineering according to claim 5, characterized in that, The number of the distribution baffles (113) is set to a certain number, and they are arranged in a circular array along the circumferential surface of the rotation axis (112).

7. A sand screening machine for construction engineering according to claim 5, characterized in that, The initial position of the distribution baffle (113) is in contact with the inner wall of the outlet of the sand storage funnel (2).

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