Concrete admixture screening and grading device
By designing a double-layer screen plate structure and a rotating rod system, the problem of poor screening effect of the existing screening device is solved, and the complete separation of large and small particles in the admixture is achieved, which improves the screening efficiency.
Patent Information
- Application Number
- CN202422348813.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-09-26
AI Technical Summary
The existing screening device has poor screening effect when encountering more admixtures, resulting in mixing small particles and large particles, and secondary screening is required.
A concrete admixture screening and grading device is designed, adopting a double-layer screen plate structure, which drives the screen plate vibration through the rotating rod and bevel gear system, and provides additional thrust with the stabilizer rod and spring to improve screening efficiency.
The complete separation of large and small particles in the admixture is achieved, improving the screening efficiency and effect.
Smart Images
Figure CN223288457U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of concrete admixture screening, in particular to a concrete admixture screening and grading device. Background Art
[0002] Mineral admixtures are a type of finely dispersed siliceous material that is added to concrete in large quantities, typically accounting for 20% to 70% of the total cementitious material used. These materials, also known as mineral admixtures or supplementary cementitious materials, primarily include fly ash, ground slag powder, silica fume, and rice husk ash. Admixtures must be screened to control their particle size distribution, thereby improving the overall quality and performance of concrete.
[0003] The screening effect of the screening device in the prior art is poor when encountering a large amount of admixtures, resulting in a portion of small particles still being mixed with large particles, requiring secondary screening. Utility Model Content
[0004] In order to solve the problem that the screening effect of the screening device is poor when encountering a large number of admixtures, the purpose of the utility model is to provide a concrete admixture screening and grading device.
[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a concrete admixture screening and grading device, comprising a bottom plate, a screening box fixedly installed on the top of the bottom plate, two empty slots are provided on the inner wall of the screening box, a first screen plate and a second screen plate are movably provided in the two empty slots, a fixing rod is fixedly installed inside the two empty slots, the two fixing rods pass through the first screen plate and the second screen plate respectively, a rotating rod is rotatably provided on the outer side of the screening box, two first bevel gears are fixedly provided on the outer side of the rotating rod, the outer sides of the two first bevel gears are meshedly connected with the second bevel gear, and the middle parts of the two second bevel gears are fixedly provided with The rotating shaft, both of the rotating shafts rotate and pass through the screening box, and the outer sides of the two rotating shafts are fixed with symmetrically distributed cams, and the cams on the outer sides of the two rotating shafts are used in conjunction with the first screen plate and the second screen plate respectively. The outside of the screening box is fixedly installed with a collecting box and a conveying box, and a fixed box is fixedly installed on the side of the top of the bottom plate close to the conveying box. The conveying box is fixedly passed through the fixed box, and a material transport port is provided on the top of the fixed box. The interior of the fixed box rotates and passes through the first conveying blade, and the side of the fixed box close to the material transport port is fixedly installed with a stabilizing box, and the interior of the stabilizing box rotates and passes through the second conveying blade, and a discharge port is provided at the bottom end of the stabilizing box.
[0006] Preferably, a stabilizing rod is fixedly installed inside the two empty slots, and the stabilizing rods inside the two empty slots pass through the first sieve plate and the second sieve plate respectively. The upper surface and the lower surface of the inner wall of the two empty slots are fixedly installed with symmetrically distributed springs, and the springs inside the two empty slots are respectively fitted with the first sieve plate and the second sieve plate.
[0007] Compared with the prior art, the beneficial effects of the present invention are:
[0008] 1. This application can perform secondary screening on the admixture, so that the large and small particles in the admixture are separated more thoroughly, thereby improving the screening efficiency;
[0009] 2. The present application sets up a stabilizing rod and a spring so that when the first sieve plate and the second sieve plate vibrate, the spring can give the first sieve plate and the second sieve plate a certain thrust through elastic force, thereby increasing the vibration amplitude of the first sieve plate and the second sieve plate, and thus better screening the admixture. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0011] Figure 1 It is a schematic structural diagram of the utility model as a whole.
[0012] Figure 2 This is a schematic diagram of the structure inside the screening box of the present invention.
[0013] Figure 3 It is a structural schematic diagram of the material transport port in this utility model.
[0014] Figure 4 It is a schematic diagram of the structure inside the fixed box and the stable box in the utility model.
[0015] In the figure: 1. Bottom plate; 11. Screening box; 12. Empty slot; 13. First sieve plate; 14. Second sieve plate; 15. Fixed rod; 16. Rotating rod; 17. First bevel gear; 18. Second bevel gear; 19. Rotating shaft; 191. Cam; 192. Collecting box; 193. Conveying box; 194. Fixed box; 195. Material transport port; 196. First conveying blade; 197. Stabilizing box; 198. Second conveying blade; 199. Discharge port; 2. Stabilizing rod; 21. Spring; 3. Protective box; 4. First motor; 41. Second motor; 5. Third bevel gear; 51. Fourth bevel gear; 52. Linkage rod; 53. Belt; 6. Support block; 7. Discharge pipe; 8. Bracket. DETAILED DESCRIPTION
[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0017] Example: Figure 1-4 As shown, the utility model provides a concrete admixture screening and grading device, including a bottom plate 1, a screening box 11 is fixedly installed on the top of the bottom plate 1, the inner wall of the screening box 11 is provided with two empty slots 12, a first sieve plate 13 and a second sieve plate 14 are movably provided in the two empty slots 12, a fixing rod 15 is fixedly installed inside the two empty slots 12, the two fixing rods 15 pass through the first sieve plate 13 and the second sieve plate 14 respectively, a rotating rod 16 is rotatably provided on the outside of the screening box 11, two first bevel gears 17 are fixedly provided on the outside of the rotating rod 16, the outer sides of the two first bevel gears 17 are meshed with second bevel gears 18, the middle parts of the two second bevel gears 18 are fixed with rotating shafts 19, the two rotating shafts 19 both rotate and pass through the screening box 11, the two The outside of each rotating shaft 19 is fixed with a symmetrically distributed cam 191, and the cams 191 on the outside of the two rotating shafts 19 are used in conjunction with the first sieve plate 13 and the second sieve plate 14 respectively. A collecting box 192 and a conveying box 193 are fixedly installed on the outside of the screening box 11. A fixed box 194 is fixedly installed on the side of the top of the bottom plate 1 close to the conveying box 193. The conveying box 193 is fixedly passed through the fixed box 194, and a material transport port 195 is provided on the top of the fixed box 194. The internal rotation of the fixed box 194 is passed through the first conveying blade 196, and a stabilizing box 197 is fixedly installed on the side of the fixed box 194 close to the material transport port 195. The internal rotation of the stabilizing box 197 is passed through the second conveying blade 198, and a discharge port 199 is provided at the bottom end of the stabilizing box 197.
[0018] A stabilizing rod 2 is fixedly installed inside the two empty slots 12, and the stabilizing rod 2 inside the two empty slots 12 passes through the first sieve plate 13 and the second sieve plate 14 respectively. The upper surface and the lower surface of the inner wall of the two empty slots 12 are fixedly installed with symmetrically distributed springs 21, and the springs 21 inside the two empty slots 12 are respectively fitted with the first sieve plate 13 and the second sieve plate 14.
[0019] A protection box 3 is fixedly installed on one side of the screening box 11 close to the rotating rod 16. The rotating rod 16 rotates through the protection box 3. By providing the protection box 3, the rotating rod 16 can be supported to enable it to rotate smoothly.
[0020] A first motor 4 is coaxially fixedly installed on the top of the rotating rod 16, and a second motor 41 is coaxially fixedly installed on the end of the second conveying blade 198 away from the fixed box 194. By setting the first motor 4 and the second motor 41, the rotating rod 16 and the second conveying blade 198 can be driven to rotate.
[0021] A third bevel gear 5 is fixedly provided on the top of the first conveying blade 196, and a fourth bevel gear 51 is meshedly connected to the top of the third bevel gear 5. A linkage rod 52 is fixedly provided in the middle of the fourth bevel gear 51, and the linkage rod 52 and the second conveying blade 198 are rotatably connected by a belt 53. When the second conveying blade 198 rotates, it can drive the belt 53 to rotate, and the belt 53 drives the linkage rod 52 to rotate, and the linkage rod 52 drives the fourth bevel gear 51 to rotate, and the fourth bevel gear 51 drives the first conveying blade 196 to rotate through the third bevel gear 5.
[0022] The top of the stabilizing box 197 is fixedly mounted with symmetrically distributed support blocks 6, and the linkage rod 52 rotates through the support blocks 6. By providing the support blocks 6, the linkage rod 52 can be supported so that it can rotate smoothly.
[0023] A discharge pipe 7 is fixedly installed on one side of the bottom end of the stabilization box 197 near the discharge port 199. By providing the discharge pipe 7, the probability of the additive splashing is reduced, so that it can fall onto the surface of the first screen plate 13 better.
[0024] A bracket 8 is fixedly installed on one side of the stabilizing box 197 close to the belt 53, the second conveying blade 198 observes the bracket 8, and the second motor 41 is fixedly installed on the outside of the bracket 8. By setting the bracket 8, the second motor 41 can be supported and its stability can be improved.
[0025] Working principle: In actual use, the rotating rod 16 is driven to rotate, which drives the two first bevel gears 17 to rotate. The two first bevel gears 17 drive the two rotating shafts 19 to rotate through the two second bevel gears 18. The two rotating shafts 19 drive the cams 191 on their respective outer sides to rotate. When the cam 191 rotates to a certain angle, the protrusion of the cam 191 contacts the first sieve plate 13 and the second sieve plate 14, causing the first sieve plate 13 and the second sieve plate 14 to rise. When the protrusion of the cam 191 disengages from the first sieve plate 13 and the second sieve plate 14, the first sieve plate 13 and the second sieve plate 14 fall. This is repeated, causing the first sieve plate 13 and the second sieve plate 14 to vibrate. Then, the admixture is poured on the surface of the first sieve plate 13. At this time, the smaller particles in the admixture fall to the surface of the second sieve plate 14, and the smaller particles in the admixture on the surface of the second sieve plate 14 fall to the screening The bottom of the box 11, and then the admixture on the surface of the second sieve plate 14 enters the collecting box 192, while the admixture on the surface of the first sieve plate 13 enters the fixed box 194 through the conveying box 193, and by driving the first conveying blade 196 to rotate, the admixture in the fixed box 194 is driven to rise, and enters the stabilizing box 197 through the material transport port 195, and then the admixture in the stabilizing box 197 is driven to move by driving the second conveying blade 198 until it falls back to the surface of the first sieve plate 13 from the discharge port 199; by the provided stabilizing rod 2 and spring 21, when the first sieve plate 13 and the second sieve plate 14 vibrate, the spring 21 can give a certain thrust to the first sieve plate 13 and the second sieve plate 14 through elastic force, thereby increasing the vibration amplitude of the first sieve plate 13 and the second sieve plate 14, and thus better screening the admixture.
[0026] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.
Claims
1. A concrete admixture screening and grading device, comprising a bottom plate (1), characterized in that: A screening box (11) is fixedly installed on the top of the bottom plate (1), and two empty slots (12) are provided on the inner wall of the screening box (11), and a first screen plate (13) and a second screen plate (14) are movably provided in the two empty slots (12), and a fixing rod (15) is fixedly installed inside the two empty slots (12), and the two fixing rods (15) pass through the first screen plate (13) and the second screen plate (14), respectively. A rotating rod (16) is rotatably provided on the outer side of the screening box (11), and two first bevel gears (17) are fixedly provided on the outer side of the rotating rod (16), and the outer sides of the two first bevel gears (17) are meshed with second bevel gears (18), and the middle parts of the two second bevel gears (18) are fixedly provided with a rotating shaft (19), and the two rotating shafts (19) rotate and pass through the screening box (11), and the outer sides of the two rotating shafts (19) are fixedly provided with symmetrical The cams (191) are distributed, and the cams (191) on the outside of the two rotating shafts (19) are used in conjunction with the first screen plate (13) and the second screen plate (14) respectively. The outside of the screening box (11) is fixedly installed with a collecting box (192) and a conveying box (193). The top of the bottom plate (1) is fixedly installed with a fixed box (194) on the side close to the conveying box (193). The conveying box (193) is fixedly passed through the fixed box (194). The top of the fixed box (194) is provided with a material transport port (195). The interior of the fixed box (194) is rotated and passed through by a first conveying blade (196). The side of the fixed box (194) close to the material transport port (195) is fixedly installed with a stabilizing box (197). The interior of the stabilizing box (197) is rotated and passed through by a second conveying blade (198). The bottom of the stabilizing box (197) is provided with a discharge port (199).
2. A concrete admixture screening and grading device according to claim 1, characterized in that: Stabilizing rods (2) are fixedly installed inside the two empty slots (12), and the stabilizing rods (2) inside the two empty slots (12) respectively penetrate the first sieve plate (13) and the second sieve plate (14). Symmetrically distributed springs (21) are fixedly installed on the upper surface and the lower surface of the inner wall of the two empty slots (12), and the springs (21) inside the two empty slots (12) are respectively fitted with the first sieve plate (13) and the second sieve plate (14).
3. A concrete admixture screening and grading device according to claim 1, characterized in that: A protection box (3) is fixedly mounted on one side of the screening box (11) close to the rotating rod (16), and the rotating rod (16) rotates through the protection box (3).
4. A concrete admixture screening and grading device as claimed in claim 3, characterized in that: A first motor (4) is coaxially fixedly mounted on the top of the rotating rod (16), and a second motor (41) is coaxially fixedly mounted on one end of the second conveying blade (198) away from the fixed box (194).
5. A concrete admixture screening and grading device as claimed in claim 4, characterized in that: A third bevel gear (5) is fixedly provided on the top of the first conveying blade (196), a fourth bevel gear (51) is meshedly connected to the top of the third bevel gear (5), a linkage rod (52) is fixedly provided on the middle of the fourth bevel gear (51), and the linkage rod (52) and the second conveying blade (198) are rotationally connected via a belt (53).
6. A concrete admixture screening and grading device according to claim 5, characterized in that: A symmetrically distributed support block (6) is fixedly mounted on the top of the stabilizing box (197), and the linkage rod (52) rotates and penetrates the support block (6).
7. A concrete admixture screening and grading device according to claim 6, characterized in that: A discharge pipe (7) is fixedly mounted on one side of the bottom end of the stabilizing box (197) close to the discharge port (199).
8. A concrete admixture screening and grading device as claimed in claim 5, characterized in that: A bracket (8) is fixedly mounted on one side of the stabilizing box (197) close to the belt (53), the second conveying blade (198) observes the bracket (8), and the second motor (41) is fixedly mounted on the outside of the bracket (8).