Sand screening device with flying dust prevention structure for civil engineering construction
By designing a detachable arc-shaped screen plate and a sand screening device driven by a motor, the problems of inflexible screening and dust caused by fixed holes in drum-type sand screening machines were solved, achieving efficient screening of sand of different particle sizes and dust prevention.
Patent Information
- Application Number
- CN202520065540.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-13
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-01-13
AI Technical Summary
The existing drum-type sand screening machine has a fixed hole size that cannot be flexibly adjusted, making it difficult to screen out sand of different particle sizes, and at the same time generating a lot of dust during the screening process.
A sand screening device with a dust-proof structure was designed. The size of the holes can be flexibly adjusted by means of a detachable arc-shaped screen plate and bolt connection. Combined with the electric motor driving the screen drum and the conveying auger, it can screen sand of different particle sizes.
It enables flexible screening of sand with different particle sizes, reduces dust generation, and improves screening efficiency and flexibility.
Smart Images
Figure CN223761453U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of screening equipment technology, specifically to a sand screening device for civil engineering construction with a dust-proof structure. Background Technology
[0002] Sand, as a very common and important building material, is widely used in various construction projects. However, due to the different sizes of sand grains, the proportions used in mixing and blending vary slightly. To make the grain sizes within a batch of sand more similar, sand screening devices are generally used to sieve the sand.
[0003] To prevent the generation of a large amount of flying dust during the sand screening process, a drum-type sand screening machine is used. However, the existing drum-type sand screening machine mainly controls the coarseness of the sand through the holes on the drum. However, the size of the holes on the existing drum is fixed and cannot be changed, making it difficult to screen out sand of different particle sizes. Therefore, we have developed a sand screening device for civil engineering construction with a dust-proof structure. Utility Model Content
[0004] The purpose of this invention is to provide a sand screening device for civil engineering construction with a dust-proof structure, so as to solve the above-mentioned shortcomings in the technology.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A sand screening device for civil engineering construction with a dust-proof structure includes a screening box. Two partitions are fixedly installed on the inner wall of the screening box. The two partitions have fixing openings on the outer walls of both ends of the screening box. A screening roller is installed inside the screening box. Equally spaced fixing rings are fixedly installed on the outer wall of the screening roller. Equally spaced bearing rings are fixedly installed on the outer wall of each fixing ring. The outer rings of the bearing rings are fixedly connected to the inner walls of the fixing openings. Equally spaced mounting openings are opened on the outer walls of both sides of the screening roller. Positioning strips are fixedly installed on the top and bottom outer walls of the screening roller. First positioning holes are equally spaced on the outer walls of the positioning strips. An arc-shaped screening plate is engaged with the inner wall of each mounting opening. Connecting plates are fixedly installed at the top and bottom ends of the arc-shaped screening plate. A positioning plate is fixedly installed on the outer wall of one end adjacent to the connecting plate. Second positioning holes are equally spaced on the outer wall of the positioning plate. Matching bolts are fitted to the inner walls of the first and second positioning holes.
[0007] Furthermore, the bottom outer wall of the screening box is fixedly provided with storage bins distributed at equal intervals. The bottom outer wall of the storage bins is fixedly provided with vertically downward discharge pipes through openings. The outer wall of the discharge pipes is equipped with gates. The storage bins facilitate the storage of screened sand, and the discharge pipes facilitate the discharge of sand from the storage bins.
[0008] Furthermore, the top outer wall of the screening box has an opening, and a door panel is movably connected to the top side of the opening via a hinge. A door handle is fixedly provided on the top outer wall of the door panel, and the door panel inside the opening can be opened by using the door handle.
[0009] Furthermore, a first docking plate is fixedly mounted on one side of the outer wall of the fixing ring via a bracket. The outer wall of the first docking plate has equidistantly distributed first docking holes. A mounting plate is fixedly mounted on one side of the outer wall of the screening box. A first motor is fixedly mounted on the top outer wall of the mounting plate. A second docking plate is fixedly mounted on the output shaft of the first motor via a coupling. The outer wall of the second docking plate has equidistantly distributed second docking holes. The inner walls of the first and second docking holes are fitted with matching bolts. The second docking plate is docked with the first docking plate. The output shaft of the first motor rotates in conjunction with the bearing ring, which drives the screening roller to rotate inside the screening box.
[0010] Furthermore, a feed box is fixedly provided at the end of the screening box away from the first motor. A motor fixing cover is fixedly provided on one outer wall of the feed box. A second motor is fixedly provided on the inner wall of the motor fixing cover. The output shaft of the second motor passes through the outer wall of the feed box and is fixedly provided with a conveying auger through a coupling. The outer wall of the conveying auger is in contact with the inner wall of the screening drum. The output shaft of the second motor drives the conveying auger to rotate, which facilitates the input of sand in the feed box into the screening drum.
[0011] Furthermore, the outer walls on both sides of the screening box are fixed with equally spaced support legs, which facilitates the placement of this utility model in a designated position.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] In this invention, by unscrewing the bolts in the second and first positioning holes and disassembling the arc-shaped screen plate designed inside the mounting opening, an arc-shaped screen plate with a specified hole size is installed on the inner wall of the mounting opening, so that the positioning plate fits against one outer wall of the positioning strip. Bolts are then screwed into the inner walls of the second and first positioning holes, and the arc-shaped screen plate is replaced on the inner wall of the mounting opening, making it convenient to screen sand of different particle sizes. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.
[0015] Figure 1 This is a three-dimensional structural diagram of a sand screening device for civil engineering construction with a dust-proof structure according to the present invention.
[0016] Figure 2 This is a schematic diagram of a sand drying box structure for civil engineering construction with a dust-proof structure according to the present invention.
[0017] Figure 3 This is a schematic diagram of a drying drum structure for a sand screening device for civil engineering construction with a dust-proof structure according to the present invention.
[0018] Figure 4 This is a schematic diagram of an arc-shaped drying plate structure for a sand screening device for civil engineering construction with a dust-proof structure according to the present invention.
[0019] Figure 5 This is a schematic diagram of the first electric motor structure of a sand screening device for civil engineering construction with a dust-proof structure according to the present invention.
[0020] Figure 6 This is a schematic diagram of the second electric motor structure of a sand screening device for civil engineering construction with a dust-proof structure according to the present invention.
[0021] Explanation of reference numerals in the attached figures:
[0022] 1. Screening box; 2. Partition plate; 3. Fixing port; 4. Screening roller; 5. Fixing ring; 6. Bearing ring; 7. Fixing port; 8. Positioning strip; 9. First positioning hole; 10. Arc-shaped screening plate; 11. Connecting plate; 12. Positioning plate; 13. Second positioning hole; 14. First docking plate; 15. First docking hole; 16. Mounting plate; 17. First motor; 18. Second docking plate; 19. Second docking hole; 20. Feeding box; 21. Motor fixing cover; 22. Second motor; 23. Conveying auger; 24. Storage bin; 25. Discharge pipe; 26. Support legs; 27. Box opening; 28. Box door panel; 29. Door handle. Detailed Implementation
[0023] The following drawings will disclose several embodiments of this utility model. For clarity, many physical details will be described in the following description. However, it should be understood that these physical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these physical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.
[0024] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the utility model. They are merely used to distinguish components or operations described with the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0025] Example 1: Refer to Figures 1-6 As shown in the figure, this embodiment provides a sand screening device for civil engineering construction with a dust-proof structure, including a screening box 1. Two partitions 2 are fixedly installed on the inner wall of the screening box 1. The two partitions 2 have fixing openings 3 on the outer walls of both ends of the screening box 1. A screening roller 4 is installed inside the screening box 1. Fixing rings 5 are fixedly installed at equal intervals on the outer wall of the screening roller 4. Bearing rings 6 are fixedly installed at equal intervals on the outer wall of the fixing rings 5. The outer rings of the bearing rings 6 are fixedly connected to the inner wall of the fixing openings 3. The outer walls of both sides of the screening roller 4 have... The mounting openings 7 are evenly spaced inside. The top and bottom outer walls of the screening roller 4 are fixedly provided with positioning strips 8. The outer walls of the positioning strips 8 are provided with first positioning holes 9 evenly distributed. The inner wall of the mounting opening 7 is fitted with an arc-shaped screening plate 10. The top and bottom ends of the arc-shaped screening plate 10 are fixedly provided with connecting plates 11. The outer wall of one end of the adjacent connecting plate 11 is fixedly provided with a positioning plate 12. The outer wall of the positioning plate 12 is provided with second positioning holes 13 evenly distributed. The inner walls of the first positioning holes 9 and the second positioning holes 13 are equipped with matching bolts.
[0026] Example 2: Based on the scheme of Example 1, in this example, the bottom outer wall of the screening box 1 is fixedly equipped with storage bins 24 distributed at equal intervals. The bottom outer wall of the storage bins 24 is fixedly equipped with a vertically downward discharge pipe 25 through an opening. A gate is installed on the outer wall of the discharge pipe 25. The storage bins 24 facilitate the storage of screened sand, and the discharge pipe 25 facilitates the discharge of sand from the storage bins 24. The top outer wall of the screening box 1 has a box opening 27. A box door panel 28 is movably connected to the top side of the box opening 27 through a hinge. A door handle 29 is fixedly provided on the top outer wall of the box door panel 28. The box door panel 28 inside the box opening 27 can be opened through the door handle 29. The two outer walls of the screening box 1 are fixedly equipped with support legs 26 distributed at equal intervals. The support legs 26 facilitate the placement of this utility model in a designated position.
[0027] Example 3: Based on Example 1, in this example: A first mating plate 14 is fixedly installed on one side of the outer wall of the fixing ring 5 via a bracket. The outer wall of the first mating plate 14 has equidistantly distributed first mating holes 15. A mounting plate 16 is fixedly installed on one side of the outer wall of the screening box 1. A first motor 17 is fixedly installed on the top outer wall of the mounting plate 16. A second mating plate 18 is fixedly installed on the output shaft of the first motor 17 via a coupling. The outer wall of the second mating plate 18 has equidistantly distributed second mating holes 19. The inner walls of the first mating holes 15 and the second mating holes 19 are equipped with matching bolts. The second mating plate 18 and the first mating plate 14 are mated together. Next, the output shaft of the first motor 17 rotates in conjunction with the bearing ring 6, which drives the screening drum 4 to rotate inside the screening box 1. A feed box 20 is fixedly installed at the end of the screening box 1 away from the first motor 17. A motor fixing cover 21 is fixedly installed on the outer wall of one side of the feed box 20. A second motor 22 is fixedly installed on the inner wall of the motor fixing cover 21. The output shaft of the second motor 22 passes through the outer wall of the feed box 20 and is fixedly installed with a conveying auger 23 through a coupling. The outer wall of the conveying auger 23 is in contact with the inner wall of the screening drum 4. The output shaft of the second motor 22 drives the conveying auger 23 to rotate, which facilitates the input of sand in the feed box 20 into the screening drum 4.
[0028] Working principle of this utility model:
[0029] Reference Figures 1-6As shown, when using this utility model, the sand to be screened is first poured into the feed box 20. At this time, the output shaft of the second motor 22 drives the conveying auger 23 to rotate. The rotating conveying auger 23 feeds the sand into the screening drum 4. In conjunction with the output shaft of the first motor 17, the second docking plate 18 rotates. The second docking plate 18 drives the first docking plate 14 to rotate. The first docking plate 14 drives the screening drum 4 to rotate. The rotating screening drum 4, in conjunction with the conveying auger 23, passes the sand through the arc-shaped screening plate 10 for screening. The screened sand falls into the storage bins 24 at the bottom of the screening box 1. When using sand of the same particle size, open the box door 28 inside the box opening 27 using the door handle 29, unscrew the bolts in the second positioning hole 13 and the first positioning hole 9, remove the arc-shaped screen plate 10 inside the installation opening 7, install the arc-shaped screen plate 10 with the specified hole size on the inner wall of the installation opening 7, attach the positioning plate 12 to one side of the outer wall of the positioning strip 8, and screw the bolts into the inner walls of the second positioning hole 13 and the first positioning hole 9. This allows the arc-shaped screen plate 10 to be replaced, facilitating the screening of sand of different particle sizes. After the arc-shaped screen plate 10 has been replaced, close the box door 28 using the door handle 29.
[0030] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A sand screening device for civil engineering construction with anti-dust flying structure, comprising a screening box (1), characterized in that: The inner wall of the screening box (1) is fixedly provided with two partitions (2), two said partitions (2) are provided with fixed openings (3) on the outer wall of both ends of the screening box (1), the inside of the screening box (1) is provided with a screening drum (4), the outer wall of the screening drum (4) is fixedly provided with fixed rings (5) distributed at equal distances, the outer wall of the fixed ring (5) is fixedly provided with bearing rings (6) distributed at equal distances, the outer ring of the bearing ring (6) is fixedly connected with the inner wall of the fixed opening (3), the outer wall of both sides of the screening drum (4) is provided with mounting openings (7) distributed at equal distances, the top outer wall and the bottom outer wall of the screening drum (4) are fixedly provided with positioning strips (8), the outer wall of the positioning strip (8) is provided with first positioning holes (9) distributed at equal distances, the inner wall of the mounting opening (7) is clamped with an arc-shaped screening plate (10), the top and the bottom of both ends of the arc-shaped screening plate (10) are fixedly provided with connecting plates (11), one end of the outer wall of adjacent connecting plates (11) is fixedly provided with positioning plates (12), the outer wall of the positioning plate (12) is provided with second positioning holes (13) distributed at equal distances, the inner walls of the first positioning hole (9) and the second positioning hole (13) are matched with corresponding bolts.
2. The sand screening device for civil engineering construction with a fly ash prevention structure according to claim 1, characterized in that: The bottom outer wall of the screening box (1) is fixedly provided with storage bins (24) distributed at equal distances, the bottom outer wall of the storage bin (24) is fixedly provided with a vertically downward discharge pipe (25) through an opening, the outer wall of the discharge pipe (25) is mounted with a gate.
3. The sand screening device for civil engineering construction with a fly ash prevention structure according to claim 1, characterized in that: The top outer wall of the screening box (1) is provided with a box opening (27), one side of the top of the box opening (27) is movably connected with a box door plate (28) through a hinge, the top outer wall of the box door plate (28) is fixedly provided with a door handle (29).
4. The sand screening device for civil engineering construction with a fly ash prevention structure according to claim 1, characterized in that: One side of the outer wall of the fixed ring (5) is fixedly provided with a first butt joint disc (14) through a support, the outer wall of the first butt joint disc (14) is provided with first butt joint holes (15) distributed at equal distances, one side of the outer wall of the screening box (1) is fixedly provided with a mounting plate (16), the top outer wall of the mounting plate (16) is fixedly provided with a first motor (17), the output shaft of the first motor (17) is fixedly provided with a second butt joint disc (18) through a shaft coupling, the outer wall of the second butt joint disc (18) is provided with second butt joint holes (19) distributed at equal distances, the inner walls of the first butt joint hole (15) and the second butt joint hole (19) are matched with corresponding bolts.
5. The sand screening device for civil engineering construction with a fly ash prevention structure according to claim 4, characterized in that: One end of the screening box (1) away from the first motor (17) is fixedly provided with a feeding box (20), one side of the outer wall of the feeding box (20) is fixedly provided with a motor fixing cover (21), the inner wall of the motor fixing cover (21) is fixedly provided with a second motor (22), the output shaft of the second motor (22) passes through the outer wall of the feeding box (20) and is fixedly provided with a material conveying auger (23) through a shaft coupling, the outer wall of the material conveying auger (23) and the inner wall of the screening drum (4) are attached.
6. The sand screening device for civil engineering construction with a fly ash prevention structure according to claim 1, characterized in that: The outer walls of both sides of the screening box (1) are fixedly provided with support legs (26) distributed at equal distances.