Sand screening device for screening sand in building civil engineering
By combining the feeding cylinder, spiral conveyor paddle, and shovel plate, the problem of low efficiency in manual sand screening in small spaces is solved, achieving efficient and uniform screening results and improving the quality of sand screening at the construction site.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-25
- Publication Date
- 2026-03-31
AI Technical Summary
In small construction sites, manual sand sifting is inefficient, time-consuming, and labor-intensive, and the sifting is uneven, affecting the construction progress and the quality of the sand.
The design adopts a combination of feeding cylinder, spiral conveyor, feed hopper and shovel plate to reduce manual labor consumption. The spiral conveyor stablely transports sand, the baffle intercepts the sand thickness, and the shovel plate can be used automatically or manually to shovel sand to improve screening efficiency.
It improves the efficiency of sand screening, reduces the physical exertion of workers, ensures uniform sand screening, and enhances screening effect and quality.
Smart Images
Figure CN224058012U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of sand screening machines, specifically relating to a sand screening device for building and civil engineering. Background Technology
[0002] Sand screening devices, as important sand and gravel separation equipment, are widely used in many places such as river dredging, reservoir construction, and coal yard operations. In construction sites with limited space, due to site constraints, it is often difficult to use large-scale, highly automated sand screening equipment. Currently, the more common practice is to use small vibrating sand screening machines. In this scenario, sand is usually piled directly on the ground, and workers need to use shovels and other tools to shovel the sand onto the screening plates for screening.
[0003] However, this traditional sand screening method has many obvious drawbacks. First, relying on manual shovels to shovel sand onto the sieve is not only labor-intensive but also extremely time-consuming and labor-intensive, resulting in low efficiency and making it difficult to meet the screening efficiency requirements of construction sites, which may affect the overall construction progress. Second, because sand is manually piled onto the sieve each time, it is difficult to precisely control the distribution of sand on the sieve. This easily leads to uneven and incomplete screening during the screening process, causing some sand to not be fully screened, thus affecting the screening effect and quality, and increasing the difficulty and cost of subsequent processing. Utility Model Content
[0004] This utility model provides a sand screening device for building and civil engineering, which has the characteristics of reducing the physical labor expenditure of workers and improving the screening effect.
[0005] This utility model provides the following technical solution: It includes a sand screening machine body, a screen frame, and a screen plate. A baffle is provided on the inner side of the screen frame, and support clamps are slidably connected to both sides of the baffle. Both support clamps are installed on the inner wall of the screen frame. A feeding cylinder is provided on one side of the sand screening machine body, and the feeding cylinder corresponds to the raised end of the screen frame. A spiral conveyor is rotatably connected to the inner wall of the feeding cylinder. A drive motor corresponding to the position of the spiral conveyor is installed at the top of the feeding cylinder. A feeding hopper is installed on one side of the feeding cylinder, and the feeding hopper corresponds to the bottom position of the spiral conveyor. An opening corresponding to the position of the feeding hopper is opened on one side of the feeding cylinder. A shovel is rotatably connected to the inner wall of the feeding hopper, and the angle of the shovel is adjustable.
[0006] The sand screening machine has two support frames installed on one side of its main body. The two support frames are symmetrically distributed, and the feeding cylinder is installed between the two support frames.
[0007] The feeding cylinder is equipped with an L-shaped feeding cover on one side, and an opening corresponding to the position of the L-shaped feeding cover is opened on one side of the feeding cylinder. The L-shaped feeding cover is positioned corresponding to the screen frame and the screen plate, and the L-shaped feeding cover does not contact the screen frame and the screen plate. The L-shaped feeding cover is located between the baffle and the screen frame.
[0008] The screen frame is equipped with a swing plate at its bottom, and an elastic push plate is hinged to the side of the screen frame away from the feeding cylinder. The elastic push plate is in contact with the side wall of the swing plate, and a torsion spring is provided between the elastic push plate and the screen frame.
[0009] The baffle has several insertion holes on one side, and a positioning bolt is threaded onto the inner wall of one of the supporting clamps. The positioning bolt is inserted into the inner wall of the insertion hole.
[0010] A passive telescopic rod is installed on one side of the shovel plate, and the passive telescopic rod is rotatably connected to the outside of the feed hopper. An electrically controlled telescopic rod is installed on one side of the feed hopper, and one end of the electrically controlled telescopic rod is hinged to one end of the passive telescopic rod.
[0011] The shovel plate has an inclined plate at one end, which is slidably connected to the inner wall of the feed hopper.
[0012] The beneficial effects of this utility model are as follows: By using the feeding cylinder, spiral conveyor, feed hopper and shovel plate in combination, the physical strength of workers is reduced and work efficiency is improved. In addition, when the shovel plate flips downward, it can directly shovel the sand on the ground, and then flip and push it to the position of the spiral conveyor. It can be used in conjunction with manual shoveling. If there is a lot of sand, the shovel plate is used to shovel it; if there is a little sand, manual shoveling is used. In addition, the frequency of sand conveyed by the spiral conveyor is stable, reducing the need to pile a large amount of sand on the screen plate at one time, and improving the subsequent screening effect. The baffle plate intercepts the upper layer of sand, so that the sand does not participate in the screening in a thick state, further improving the subsequent screening effect.
[0013] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;
[0015] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;
[0016] Figure 3 for Figure 2 Enlarged diagram of section A in the middle;
[0017] Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 3 .
[0018] In the diagram: 1. Sand screening machine body; 11. Support frame; 2. Screen frame; 21. Screen plate; 22. Baffle; 221. Insertion hole; 23. Support clamp; 231. Positioning bolt; 24. Swing plate; 25. Elastic push plate; 3. Feeding cylinder; 31. Spiral conveyor; 311. Drive motor; 32. Feeding hopper; 33. Shovel plate; 331. Inclined plate; 332. Passive telescopic rod; 34. Electrically controlled telescopic rod; 35. L-shaped feeding cover. Detailed Implementation
[0019] Please see Figures 1-4 The present invention provides the following technical solution: a sand screening machine body 1, a screen frame 2, and a screen plate 21 are included. A baffle 22 is provided on the inner side of the screen frame 2. Supporting clamps 23 are slidably connected to both sides of the baffle 22. Both supporting clamps 23 are installed on the inner wall of the screen frame 2. A feeding cylinder 3 is provided on one side of the sand screening machine body 1. The feeding cylinder 3 corresponds to the raised end of the screen frame 2. A spiral conveying paddle 31 is rotatably connected to the inner wall of the feeding cylinder 3. A drive motor 311 corresponding to the position of the spiral conveying paddle 31 is installed at the top of the feeding cylinder 3. A feeding hopper 32 is installed on one side of the feeding cylinder 3. The feeding hopper 32 corresponds to the bottom position of the spiral conveying paddle 31. An opening corresponding to the position of the feeding hopper 32 is opened on one side of the feeding cylinder 3. A shovel plate 33 is rotatably connected to the inner wall of the feeding hopper 32. The angle of the shovel plate 33 is adjustable.
[0020] In this implementation scheme: the sand screening machine body 1 supports all components of the device. The sand screening machine body 1 drives the screen frame 2 through an internal vibrating device, so that the screen frame 2 drives the screen plate 21 to vibrate, thereby screening the sand on the screen plate 21. The screen frame 2 and the screen plate 21 are designed with an inclination so that larger sand particles can be automatically discharged. The feeding cylinder 3 is located at the rear of the sand screening machine body 1. The feeding cylinder 3 transports the sand inside through a spiral conveyor 31, so that the sand can be guided to the screen plate 21 for screening. The drive motor 311 drives the spiral conveyor 31 to rotate. The spiral conveyor 31 transports sand at a stable frequency, reducing the amount of sand piled on the screen plate 21 at one time, improving the subsequent screening effect. In addition, the baffle 22 intercepts the upper layer of sand, so that the sand does not... The sand will be used in screening with a thicker layer, which will further improve the subsequent screening effect. The feeding cylinder 3 feeds the sand through the feeding hopper 32. The feeding hopper 32 and the shovel plate 33 are in a low position, which makes it easy for workers to put the sand on the ground directly into the inside of the feeding hopper 32. Through the opening of the feeding cylinder 3, the sand in the feeding hopper 32 enters the feeding cylinder 3 and is conveyed by the spiral conveyor 31, which reduces the physical strength of workers and improves work efficiency. The shovel plate 33 can swing in the feeding hopper 32. When the shovel plate 33 tilts upward, it can push the sand towards the position of the spiral conveyor 31, which is convenient for conveying the sand. When the shovel plate 33 flips downward, it can directly shovel the sand on the ground and then flip and push it to the position of the spiral conveyor 31. It can be used in conjunction with manual sand shoveling. If there is a lot of sand, the shovel plate 33 is used to shovel it. If there is a little sand, manual sand shoveling is used.
[0021] Two support frames 11 are installed on one side of the sand screening machine body 1. The two support frames 11 are symmetrically distributed, and the feeding cylinder 3 is installed between the two support frames 11. The sand screening machine body 1 supports the feeding cylinder 3 through the two support frames 11, so that the feeding cylinder 3 can stably drive the spiral conveyor 31, the feed hopper 32 and the shovel 33 for use, and facilitates the overall movement of the device.
[0022] An L-shaped feeding hood 35 is installed on one side of the feeding cylinder 3. An opening corresponding to the position of the L-shaped feeding hood 35 is opened on one side of the feeding cylinder 3. The L-shaped feeding hood 35 corresponds to the positions of the screen frame 2 and the screen plate 21, and the L-shaped feeding hood 35 does not contact the screen frame 2 and the screen plate 21. The L-shaped feeding hood 35 is located between the baffle 22 and the screen frame 2. When the spiral conveyor 31 transfers sand from the bottom to the top, the feeding cylinder 3 guides the sand into the L-shaped feeding hood 35 through the opening. The L-shaped feeding hood 35 directly guides the sand into the space enclosed by the screen frame 2 and the screen plate 21, so that the sand can participate in the interception work of the baffle 22.
[0023] A swing plate 24 is installed at the bottom of the screen frame 2. An elastic push plate 25 is hinged to the side of the screen frame 2 away from the feeding cylinder 3. The elastic push plate 25 contacts the side wall of the swing plate 24. A torsion spring is provided between the elastic push plate 25 and the screen frame 2. The swing plate 24 swings at the bottom of the baffle 22 to prevent sand from clogging. The elastic push plate 25 is pushed by the torsion spring to squeeze the swing plate 24, so that the swing plate 24 can automatically return to its original position.
[0024] A number of insertion holes 221 are provided on one side of the baffle 22. A positioning bolt 231 is threadedly connected to the inner wall of one of the support clamps 23. The positioning bolt 231 is inserted into the inner wall of the insertion hole 221. The support clamp 23 is inserted into the insertion hole 221 through the positioning bolt 231, so that the position and height of the baffle 22 between the two support clamps 23 can be adjusted to adapt to different vibration frequencies.
[0025] A passive telescopic rod 332 is installed on one side of the shovel plate 33. The passive telescopic rod 332 is rotatably connected to the outside of the feed hopper 32. An electrically controlled telescopic rod 34 is installed on one side of the feed hopper 32. One end of the electrically controlled telescopic rod 34 is hinged to one end of the passive telescopic rod 332. The passive telescopic rod 332 is located outside the feed hopper 32. The support clamp 23 adjusts the angle of the passive telescopic rod 332 through the electrically controlled telescopic rod 34. The angle of the passive telescopic rod 332 is consistent with that of the shovel plate 33. When the electrically controlled telescopic rod 34 drives the passive telescopic rod 332 to rotate, the passive telescopic rod 332 can drive the shovel plate 33 to rotate synchronously, so that the shovel plate 33 can achieve angle adjustment.
[0026] One end of the shovel plate 33 is provided with an inclined plate 331, which is slidably connected to the inner wall of the feed hopper 32; the shovel plate 33 is inclined downward through the inclined plate 331, which facilitates the shoveling of sand on the ground.
[0027] The working principle and usage process of this utility model are as follows: When there is a lot of sandpaper, the electric telescopic rod 34 pushes the passive telescopic rod 332 to a horizontal angle. The shovel plate 33 drives the inclined plate 331 to flip downwards, and the device moves in the direction of the sand. The inclined plate 331 and the shovel plate 33 shovel the sand, and then flip and push it to the position of the spiral conveyor 31 for easy sand conveying. The drive motor 311 drives the spiral conveyor 31 to rotate. The spiral conveyor 31 transports the sand inside, so that the sand can be guided to the top of the screen plate 21 for screening. When there is less sand, it is manually shoveled into the feed hopper 32 for the spiral conveyor 31 to convey. The two work together. When the spiral conveyor 31 transfers the sand from the bottom to the top, the feeding cylinder 3 guides the sand into the L-shaped feeding hood 35 through the opening. The L-shaped feeding hood 35 directly guides the sand into the space enclosed by the screen frame 2 and the screen plate 21, so that the sand can participate in the interception work of the baffle 22, so that the sand will not participate in the screening in a thick state, and further improve the subsequent screening effect.
Claims
1. A sand screening device for use in construction civil engineering, comprising a sand screening machine body (1), a screen frame (2) and a screen plate (21), characterized in that: The screen frame (2) is provided with a baffle (22), both sides of the baffle (22) are slidably connected with support clamping plates (23), both of the support clamping plates (23) are installed on the inner wall of the screen frame (2), one side of the sand screening machine body (1) is provided with a feeding cylinder (3), the feeding cylinder (3) corresponds to the position of the raised end of the screen frame (2), the inner wall of the feeding cylinder (3) is rotatably connected with a spiral conveying paddle (31), the top end of the feeding cylinder (3) is installed with a driving motor (311) corresponding to the position of the spiral conveying paddle (31), one side of the feeding cylinder (3) is installed with a feeding hopper (32) corresponding to the position of the spiral conveying paddle (31), one side of the feeding cylinder (3) is provided with an opening corresponding to the position of the feeding hopper (32), the inner wall of the feeding hopper (32) is rotatably connected with a shovel plate (33), and the angle of the shovel plate (33) is adjustable.
2. A sand screening device for use in civil engineering construction according to claim 1, characterized in that: The sand screening machine body (1) is provided with two support frames (11) on one side, and the two support frames (11) are symmetrically distributed.
3. A sand screening device for use in civil engineering construction according to claim 1, characterized in that: The feeding cylinder (3) is provided with an L-shaped feeding cover (35) on one side, and the feeding cylinder (3) is provided with an opening corresponding to the position of the L-shaped feeding cover (35) on one side, the L-shaped feeding cover (35) corresponds to the positions of the screen frame (2) and the screen plate (21), and the L-shaped feeding cover (35) does not contact the screen frame (2) and the screen plate (21), and the L-shaped feeding cover (35) is between the baffle (22) and the screen frame (2).
4. A sand screening device for use in civil engineering construction according to claim 1, characterized in that: The screen frame (2) is provided with a swing plate (24) at the bottom, and the side of the screen frame (2) away from the feeding cylinder (3) is hingedly connected with an elastic push plate (25), the elastic push plate (25) is in contact with the side wall of the swing plate (24), and a torsional spring is arranged between the elastic push plate (25) and the screen frame (2).
5. A sand screening device for use in civil engineering construction according to claim 1, characterized in that: The baffle (22) is provided with a plurality of insertion holes (221) on one side, a positioning bolt (231) is threadedly connected to the inner wall of one of the support clamping plates (23), and the positioning bolt (231) is inserted into the inner wall of the insertion hole (221).
6. A sand screening device for use in civil engineering construction according to claim 1, characterized in that: The shovel plate (33) is provided with a passive telescopic rod (332) on one side, the passive telescopic rod (332) is rotatably connected to the outside of the feeding hopper (32), the feeding hopper (32) is provided with an electric telescopic rod (34) on one side, and one end of the electric telescopic rod (34) is hingedly connected to one end of the passive telescopic rod (332).
7. A sand screening device for use in civil engineering construction according to claim 1, characterized in that: The shovel plate (33) is provided with an inclined plate (331) at one end, and the inclined plate (331) is slidably connected to the inner wall of the feeding hopper (32).