A sand screening device for construction
By introducing a multi-layer agitation mechanism and staggered mixing rack into the sand screening device, the problems of damp sand and gravel accumulation and sticking are solved, achieving uniform displacement and efficient screening of sand and gravel.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WEIFANG GLUTINOUS RICE DECORATION ENG CO LTD
- Filing Date
- 2025-04-21
- Publication Date
- 2026-06-09
AI Technical Summary
In multi-layer sand screening equipment, damp sand and gravel tend to accumulate and stick to the screen mesh, affecting the screening effect.
A sand screening device including a multi-layer agitation mechanism was designed. The device uses a drive component to drive an interlaced agitator to form an interlaced sweeping action on the screen. The wave-shaped sweeping frame rotates on the screen surface to dynamically break up the sand and gravel accumulation layer.
It effectively prevents the accumulation of damp sand and gravel, improves screening efficiency, ensures uniform displacement of sand and gravel, and quickly screens out sand and gravel of different specifications.
Smart Images
Figure CN224332680U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of engineering material screening technology, and in particular to a sand screening device for building construction. Background Technology
[0002] Sand and gravel are essential building materials during construction. Different sizes of sand and gravel are required for different construction processes, so sand screening devices are needed on-site to screen the sand and gravel.
[0003] Multi-layer sand screening equipment is highly practical because it can screen out sand and gravel of various sizes at the same time. However, this type of multi-layer sand screening equipment also has certain limitations: when screening with multi-layer sand screening devices, since sand and gravel at construction sites are mostly piled up on-site in advance, they are inevitably affected by environmental factors and weather conditions, resulting in a certain amount of moisture in the sand and gravel. When the relatively wet sand and gravel passes through the screen, there will be sand and gravel accumulation and sticking to the screen, which will affect the screening effect. Utility Model Content
[0004] This utility model provides a sand screening device for construction, which, when screening sand and gravel through a multi-layered screen, performs intermittent sweeping motions against the screen to help spread and screen the wet sand and gravel accumulated on the screen, thereby solving the problems mentioned in the background art.
[0005] When sand and gravel carrying a certain amount of moisture are screened, they may accumulate and stick to the screen, affecting the screening effect.
[0006] To achieve the above objectives, this utility model provides a sand screening device for construction, including a screening body with built-in multi-layer screening components and a multi-layer agitation mechanism. The multi-layer agitation mechanism includes a driving component and an interlaced stirring frame. The driving component is located at the top inner side of the screening body. One end of the interlaced stirring frame is connected to the output end of the driving component, and the other end penetrates vertically through the screen portion of the multi-layer screening components. The rotation plane of the stirring frame is parallel to and fits against the screen portion of the multi-layer screening components, thereby forming an interlaced sand and gravel sweeping action on the screen portion of the multi-layer screening components.
[0007] As a further embodiment of this utility model, the multi-layer screening component includes a positioning frame that fits against the inner wall of the screening body and a base screen disposed inside the positioning frame. The base screen and the positioning frame are arranged in multiple layers parallel from top to bottom inside the screening body, and the diameter of the screen holes of the base screen decreases from top to bottom.
[0008] As a further embodiment of this utility model, the staggered stirring frame includes a central shaft connected to the output end of the drive component and multiple staggered sweeping frames arranged in parallel outside the central shaft. A through groove is provided on the base screen, and the shaft of the central shaft passes through the through groove. The multiple staggered sweeping frames are respectively attached to the surface of the multi-layer base screen.
[0009] There is a certain gap between the central shaft and the through groove.
[0010] Based on this, the edge of the staggered sweeping frame is close to the edge of the base screen. The staggered sweeping frame includes a wave-shaped first sweeping frame and a second sweeping frame. When the wave bends of the first sweeping frame and the second sweeping frame are rotating, the sweeping positions of the base screen are staggered.
[0011] As a further embodiment of this utility model, a synchronization pad is provided at the top inner side of the screening body. The bottom end of the synchronization pad is inclined, and the inclination angle is the same as that of the basic screen. The driving component is provided at the bottom end of the synchronization pad and is perpendicular to the basic screen. A limiting frame for limiting the driving component is provided at the bottom end of the synchronization pad.
[0012] As a further embodiment of this utility model, the end of the screening body is provided with a feed inlet, and the inlet of the feed inlet faces the top layer of the staggered sweeping frame. The basic screen and the positioning frame are inclinedly arranged on the inner wall of the screening body. The side wall and bottom of the screening body are provided with discharge ports, and the discharge ports correspond to the discharge positions of multiple basic screens respectively. The side wall of the screening body is provided with a vibration motor.
[0013] Based on this, the outlets of the discharge ports are oriented in different directions, which makes it convenient to use containers to receive sand and gravel during sand screening.
[0014] This technical solution uses the top-level staggered sweeping frame to break up and spread the sand and gravel to be screened onto the base screen in the first instance. At the same time, the multi-layered inclined base screen and the staggered sweeping frame attached to the surface of the inclined base screen generate intermittent staggered sweeping action when the wave-shaped staggered sweeping frame rotates, which dynamically breaks up the sand and gravel accumulation layer and effectively solves the problem of water-containing sand and gravel accumulating and sticking to the screen.
[0015] Compared with the prior art, this utility model provides a sand screening device for building construction, which has the following beneficial effects:
[0016] This invention utilizes a drive unit to drive multiple staggered sweeping frames to sweep across the multi-layered base screen during the vibration screening process. The rotation of the wave-shaped first and second sweeping frames on the surface of the base screen creates staggered sweeping planes, which can push the sand and gravel to move evenly and staggered, thereby breaking up the accumulation layer of damp sand and gravel to prevent the accumulation of wet sand from affecting the screening efficiency.
[0017] In addition, the introduced sand and gravel fall immediately onto the contact point between the top layer of the base screen and the staggered sweeping frame. The rotation of the staggered sweeping frame can immediately disperse and flatten the fallen sand and gravel. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the internal structure distribution of this utility model;
[0020] Figure 3 This is a schematic diagram of the overall structure of this utility model after the inlet is removed;
[0021] Figure 4 This is a schematic diagram of the overall structure of this utility model from another perspective after removing the feed inlet;
[0022] Figure 5 This is a schematic diagram of the structural distribution of the staggered stirring rack and the basic screen in this utility model;
[0023] Figure 6 This is a structural breakdown diagram of the multi-layer screening component, driving component, and staggered stirring rack in this utility model;
[0024] Figure 7 This is a schematic diagram of the mixing routes of the first and second sweeping frames in this utility model.
[0025] In the diagram: 1. Screening body; 11. Feed inlet; 12. Discharge outlet; 13. Vibration motor; 2. Multi-layer screening assembly; 21. Basic screen; 22. Positioning frame; 3. Drive component; 4. Interlaced stirring rack; 41. Central shaft; 42. Interlaced sweeping rack; 421. First sweeping rack; 422. Second sweeping rack; 5. Synchronization pad. Detailed Implementation
[0026] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] Reference Figure 1 , Figure 2 , Figure 4 and Figure 7 To prevent the accumulation and adhesion of some moisture-containing sand and gravel to the screen during the vibration screening process, which would affect the screening efficiency, this utility model discloses a sand screening device for construction. This device includes a screening body 1 with a built-in multi-layer screening component 2, and a multi-layer agitation mechanism. The multi-layer agitation mechanism includes a drive component 3 and an interlaced stirring frame 4. The drive component 3 is located at the top inner side of the screening body 1. One end of the interlaced stirring frame 4 is connected to the output end of the drive component 3, and the other end vertically penetrates the screen portion of the multi-layer screening component 2. The rotating plane of the interlaced stirring frame 4 is parallel to and conforms to the screen portion of the multi-layer screening component 2, thereby creating an interlaced sand and gravel sweeping action on the screen portion of the multi-layer screening component 2.
[0028] The multi-layer screening component 2 includes a base screen 21 and a positioning frame 22. The positioning frame 22 is set against the inner wall of the screening body 1. The base screen 21 is set inside the positioning frame 22. The base screen 21 and the positioning frame 22 are arranged in parallel from top to bottom on the inner side of the screening body 1, and the diameter of the screen holes of the base screen 21 decreases from top to bottom.
[0029] A synchronization pad 5 is provided at the top inner side of the screening body 1. The bottom end of the synchronization pad 5 is inclined, and the inclination angle is the same as that of the basic screen 21. The driving component 3 is located at the bottom end of the synchronization pad 5 and is perpendicular to the basic screen 21. A limiting frame for the driving component 3 is provided at the bottom end of the synchronization pad 5. When the driving component 3 is perpendicular to the basic screen 21, the staggered stirring rack 4 installed at the output end of the driving component 3 can also maintain a state perpendicular to the basic screen 21.
[0030] Specifically, the staggered stirring rack 4 includes a central shaft 41 and staggered sweeping racks 42. A through groove is provided on the base screen 21. The end of the central shaft 41 is connected to the output end of the drive unit 3, and the shaft of the central shaft 41 passes through the through groove. Multiple staggered sweeping racks 42 are arranged in parallel on the outside of the central shaft 41, and each layer of staggered sweeping racks 42 is respectively attached to the surface of the corresponding base screen 21.
[0031] The central shaft 41 has a certain gap with the through groove, which allows for a buffer gap between the central shaft 41 and the through groove during vibration screening, preventing the central shaft 41 from moving and making hard contact with the inner wall of the through groove.
[0032] like Figure 5 and Figure 6 As shown, the edge of the staggered sweeping frame 42 is close to the edge of the base screen 21. Figure 7 In the process, the staggered sweeping frame 42 includes a first sweeping frame 421 and a second sweeping frame 422. Both the first sweeping frame 421 and the second sweeping frame 422 are wave-shaped frames, and the wave bends of the first sweeping frame 421 and the second sweeping frame 422 are in a rotating state, so the sweeping positions of the base screen 21 are staggered.
[0033] It should be clarified that when the length of the basic screen 21 is close to the diameter of the rotating plane of the staggered sweeping frame 42, only one set of the driving component 3 and the staggered stirring frame 4 is set in the screening body 1. When the length of the basic screen 21 is a multiple of the diameter of the rotating plane of the staggered sweeping frame 42, the number of sets of the driving component 3 and the staggered stirring frame 4 is increased accordingly, so that the staggered sweeping frame 42 can cover the length of the basic screen 21 and ensure the sweeping area.
[0034] like Figure 6 and Figure 7 As shown, when the first sweeping frame 421 and the second sweeping frame 422 rotate on the surface of the base screen 21, their wavy frame sweeps alternately through the intervals generated by the rotation, which can promote the uniform displacement of sand and gravel and drive the sand and gravel to move alternately when sweeping and flattening the sand and gravel, thereby dynamically breaking up the sand and gravel accumulation layer.
[0035] like Figure 1 and Figure 2 As shown, the screening body 1 has an inlet 11 at one end, with the inlet of the inlet 11 facing the top layer of the staggered sweeping frame 42. This allows the introduced sand and gravel to fall onto the contact point between the top layer base screen 21 and the staggered sweeping frame 42 immediately. The rotation of the staggered sweeping frame 42 disperses the falling sand and gravel, helping it to quickly spread and flatten on the base screen 21, thus increasing screening efficiency. The base screen 21 and positioning frame 22 are inclined on the inner wall of the screening body 1. The screening body 1 has outlets 12 on its side walls and bottom, each corresponding to a different outlet position on the base screen 21. Figure 3 and Figure 4As shown, due to the inclined setting of the base screen 21, the sand and gravel will eventually roll to the bottom of one side of the base screen 21 and be discharged through the discharge port 12. The discharge port 12 of the base screen 21 located at the bottom layer is located directly below, allowing the falling sand and gravel to be discharged directly. The side wall of the screening body 1 is equipped with a vibration motor 13. The vibration of the vibration motor 13 can drive the entire screening body 1 and the base screen 21 to vibrate. When the sand and gravel are poured in from the feed port 11, the multi-layer vibrating base screen 21 can complete multiple brushing of the sand and gravel, and the brushed sand and gravel are discharged through multiple discharge ports 12 respectively.
[0036] Furthermore, the outlets 12 have different orientations, which makes it convenient to use containers to receive the sand and gravel when the screening is completed and the various sizes of screened sand and gravel are discharged.
[0037] Working principle: The vibration motor 13 is started, causing the entire screening body 1 and multi-layer screening components 2 to vibrate. Then, the drive unit 3 is started, driving the staggered stirring frame 4 to rotate. This causes multiple staggered sweeping rotating frames 42 to sweep across the multi-layered base screen 21. The sand and gravel to be screened are poured into the screening body 1 through the feed inlet 11. The poured sand and gravel immediately lands at the contact point between the top base screen 21 and the staggered sweeping rotating frames 42. The rotation of the staggered sweeping rotating frames 42 immediately disperses the falling sand and gravel, helping it to quickly spread and flatten on the base screen 21. At this time, the sand and gravel on the base screen 21... Screening is completed under the vibration action. During the screening process, the first sweeping frame 421 and the second sweeping frame 422 rotate on the surface of the base screen 21. When the wavy frame of the first sweeping frame 421 and the second sweeping frame 422 rotates, it generates an interlaced sweeping plane on the surface of the base screen 21, which can push the sand and gravel to move evenly and cause the sand and gravel to move in an interlaced manner, thereby breaking the accumulation layer of wet sand and gravel to prevent the accumulation of wet sand from affecting the screening efficiency. When the multi-layer base screen 21 completes multiple brushing of the sand and gravel, the sand and gravel screened by each layer of base screen 21 are discharged through their corresponding discharge port 12, thereby completing the sand screening.
[0038] 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 preferred examples and are not intended to limit the 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 claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A sand screening device for building construction, comprising a screen section, characterized in that, It also includes a multi-layer agitation mechanism, which includes an interlaced agitator (4) capable of rotating on the surface of the screen portion; The staggered mixing rack (4) includes at least one first sweeping rack (421); And at least one second sweeper (422); The first sweeping frame (421) and the second sweeping frame (422) form intersecting sweeping paths on the surface of the screen portion to create an intersecting pushing effect on the sand and gravel on the surface of the screen portion.
2. The sand screening device for building construction according to claim 1, characterized in that, It also includes a screening body (1) with a built-in multi-layer screening component (2), the multi-layer screening component (2) includes a positioning frame (22) that fits against the inner wall of the screening body (1) and a base screen (21) that is set inside the positioning frame (22), the base screen (21) constituting the screen part; The basic screen (21) and positioning frame (22) are arranged in multiple layers from top to bottom on the inner side of the screening body (1), and the screen hole diameter of the basic screen (21) decreases from top to bottom.
3. A sand screening device for building construction according to claim 2, characterized in that, The multi-layer stirring mechanism also includes a driving component (3), which is disposed at the top inner side of the screening body (1); The staggered stirring rack (4) includes a central shaft (41) connected to the output end of the drive unit (3) and multiple staggered sweeping racks (42) arranged in parallel outside the central shaft (41); The staggered sweeping frame (42) is composed of a first sweeping frame (421) and a second sweeping frame (422). The base screen (21) is provided with a through groove. The shaft of the central shaft (41) passes vertically through the through groove. The multiple staggered sweeping frames (42) are respectively attached to the surface of the multi-layer base screen (21). There is a gap between the central shaft (41) and the through groove.
4. A sand screening device for building construction according to claim 3, characterized in that, The edge of the staggered sweeping frame (42) is close to the edge of the base screen (21). The first sweeping frame (421) and the second sweeping frame (422) are wavy structures. When the wavy bends of the first sweeping frame (421) and the second sweeping frame (422) are rotating, they exert an intermittent pushing effect on the sand and gravel on the base screen (21).
5. A sand screening device for building construction according to claim 3, characterized in that, The inner top of the screening body (1) is provided with a synchronous pad (5). The bottom of the synchronous pad (5) is inclined, and the inclination angle is the same as that of the basic screen (21). The driving component (3) is provided at the bottom of the synchronous pad (5), and the driving component (3) is perpendicular to the basic screen (21). The bottom of the synchronous pad (5) is provided with a limiting frame that restricts the driving component (3).
6. A sand screening device for building construction according to claim 3, characterized in that, The screening body (1) is provided with a feed inlet (11) at its end, and the feed inlet (11) faces the top layer of the staggered sweeping frame (42). The basic screen (21) and the positioning frame (22) are inclined on the inner wall of the screening body (1). The side wall and bottom of the screening body (1) are provided with discharge outlets (12), and the discharge outlets (12) correspond to the discharge positions of multiple basic screens (21). The side wall of the screening body (1) is provided with a vibration motor (13).
7. A sand screening device for building construction according to claim 6, characterized in that, The outlets (12) have different orientations.