Wet crushing and screening system for tailing sand raw materials for brick making
By setting up pulping tanks and drum screening machines before and after the grinder, effective stirring and screening of fly ash is achieved, and the problems of high energy consumption of the grinder and excessive water absorption of fly ash are solved, improving production efficiency and products quality.
Patent Information
- Application Number
- CN202421434889.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-06-21
AI Technical Summary
Existing grinders have high energy consumption and low efficiency during the fly ash grinding process. Excessive fly ash absorbs water and affects the performance of the block, resulting in poor production performance.
A wet crushing and screening system was designed. Fly ash is first stirred in the pulping tank with water to form slurry, and then grind it through a crusher. The slurry is screened in combination with a roller screening machine to ensure uniform particle size. , avoid over-grinding and water absorption problems.
It significantly reduces the energy consumption of the system, improves the crushing efficiency and product quality, ensures good water absorption performance of fly ash, avoids over-grinding, and improves production quality.
Smart Images
Figure CN222197161U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of brick production, and in particular relates to a wet crushing and screening system for tailings sand raw materials used for brick making. Background Art
[0002] Steam-pressurized concrete blocks are made of fly ash as the main raw material, with a foaming agent added, water added and stirred, and voids formed by chemical reaction. The blocks are made through processes such as casting, pre-curing cutting, and autoclaving. The materials have good sound insulation and heat insulation properties, and are light and earthquake-resistant, making them a high-quality wall material. At present, in the process of using fly ash to produce steam-pressurized concrete, after the fly ash is purchased and returned to the factory, it is necessary to pulverize the fly ash. After the fly ash particle size is ground to 200 mesh, it is then put into the pulping tank and stirred with water to make pulp. In the above-mentioned powdering process, the fly ash powder is ground by a pulverizer. The pulverizer has the following shortcomings during use: First, the operating energy consumption of the pulverizer is large, and the grinding efficiency is low; second, during the grinding process, the fly ash needs to absorb a large amount of water. The fly ash with more water absorption has poor performance, which will affect the performance of the blocks after entering the foaming process. Therefore, it is an objective need to develop a wet crushing and screening system for tailings sand raw materials for brick making, which has a reasonable structural design, can significantly reduce the energy consumption of the device, and can ensure the production performance of the product. Summary of the invention
[0003] The utility model aims to provide a wet crushing and screening system for tailings sand raw materials for brick making, which has a reasonable structural design and can significantly reduce the energy consumption of the device and ensure the production performance of the product.
[0004] The purpose of the utility model is achieved in this way, including a pulping tank, a crusher, a drum screening machine and a mixing tank, the top of the pulping tank is provided with a feed port and a liquid inlet, the interior of the pulping tank is provided with a stirring mechanism, the crusher comprises a feed shell, a casing body and a discharge cone bucket which are connected in sequence, a crushing shell is installed on the inner wall of the casing body, a hammer crushing mechanism is installed inside the crushing shell, a screen is installed at the bottom of the crushing shell, a first conveying pipe connected to the feed shell is provided at the bottom of the pulping tank, a second conveying pipe connected to the drum screening machine is provided at the bottom of the discharge cone bucket, an aggregate cone bucket is provided below the drum screening machine, the bottom of the aggregate cone bucket is connected to the mixing tank, a recovery trough is provided below the discharge end of the drum screen fan, and a circulation pipe connected to the pulping tank is provided on the recovery trough.
[0005] Compared with the existing technology, the advantages of this device are: first, this system does not directly grind the fly ash, but first adds the fly ash into the slurry tank, adds water and stirs it into slurry, and then sends it to the crusher for grinding. The fly ash is first made into slurry by using the slurry tank and then the slurry is ground by the crusher. The advantage of this is that on the one hand, it can reduce the energy consumption of the system and improve the crushing efficiency of the crusher. On the other hand, it can avoid the problem of fly ash absorbing more water during the grinding process. Slurrying in the slurry tank can reduce the water absorption of fly ash, ensure that the fly ash has good water absorption performance after the crusher grinding treatment, which is beneficial to improve the production quality of the product; second, the set drum screening machine can screen the slurry after grinding, so that the particle size of the subsequent fly ash slurry is uniform, which is beneficial to improve the subsequent production quality of the product, and the unqualified slurry after screening is returned to the slurry tank and the crusher for repeated crushing, which can effectively improve the crushing quality of the unqualified slurry, ensure the uniform particle size after crushing, and avoid the phenomenon of over-grinding of slurry. In summary, this system has the advantages of reasonable structure, low energy consumption and high crushing efficiency. It can play a good role in improving the quality of subsequent products and is easy to promote and use. BRIEF DESCRIPTION OF THE DRAWINGS
[0006] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0007] Figure 2 is a side view of the crusher;
[0008] In the figure: 1- pulping tank, 2- crusher, 21- feed box, 22- casing body, 23- discharge cone bucket, 24- crushing shell, 25- screen, 26- rotating shaft, 27- driving motor, 28- crushing hammer, 29- crushing rod, 210- bushing, 211- first positioning plate, 212- first movable rod, 213- shock-absorbing casing, 214- first limit block, 215- first spring, 216- second positioning plate, 217- second movable rod, 218- second limit block, 219- second spring, 3- drum screening machine, 31- frame, 32- feed drum, 33- discharge drum, 34- screening drum, 35- cross bar, 36- brush plate, 4- mixing tank, 5- first conveying pipe, 6- second conveying pipe, 7- aggregate cone bucket, 8- recovery trough, 9- circulation pipe. DETAILED DESCRIPTION
[0009] The present invention is further described below in conjunction with the accompanying drawings, but the present invention is not limited in any way. Any changes or improvements made based on the teachings of the present invention belong to the protection scope of the present invention.
[0010] like Figures 1-2As shown, the utility model includes a pulping tank 1, a crusher 2, a drum screening machine 3 and a mixing tank 4. The top of the pulping tank 1 is provided with a feed inlet and a liquid inlet. The inside of the pulping tank 1 is provided with a stirring mechanism. The stirring mechanism can adopt a stirring mechanism driven by a motor used in the technology to rotate. The stirring mechanism can speed up the mixing speed of fly ash and water, so that the fly ash and water are fully mixed and uniform. The crusher 2 includes a feed shell 21, a shell body 22 and a discharge cone hopper 23 connected in sequence. The inner wall of the shell body 22 is provided with a crushing shell 24. A hammer crushing mechanism is installed inside the crushing shell 24, a screen 25 is installed at the bottom of the crushing shell 24, a first conveying pipe 5 connected to the feed shell 21 is provided at the bottom of the pulping tank 1, a second conveying pipe 6 connected to the drum screening machine 3 is provided at the bottom of the discharge cone hopper 23, a collecting cone hopper 7 is provided below the drum screening machine 3, and the bottom of the collecting cone hopper 7 is connected to the mixing tank 4, a recovery trough 8 is provided below the discharge end of the drum screen fan 3, and a circulation pipe 9 connected to the pulping tank 1 is provided on the recovery trough 8.
[0011] The working process of this system is: the fly ash purchased and returned to the factory is added into the pulping tank 1 through the feeding port through the conveying mechanism, and then water is added into the pulping tank 1 through the liquid inlet. After that, the stirring mechanism is turned on, and the stirring mechanism fully stirs the fly ash and water to make them into slurry, and then the slurry is transported to the crusher 2 through the first conveying pipe 5. The hammer crushing mechanism will fully beat and crush the slurry entering the crushing shell 24. After crushing, the slurry falls from the screen 25 into the discharge cone hopper 23, and then enters the drum screening machine 3 through the second conveying pipe 6 for screening. After the qualified slurry after screening falls into the aggregate cone hopper 7, it enters the mixing material 4 for processing and then enters the subsequent processing process. The unqualified slurry enters the recovery tank 8, and then returns to the pulping tank 1 through the circulation pipe 9. After stirring and mixing, it enters the crusher 2 again for crushing. This system first uses a pulping tank 1 to make fly ash into slurry, and then uses a crusher 2 to grind the slurry. The advantage of this is that on the one hand, it can reduce the energy consumption of the crusher 2 and improve the crushing efficiency of the crusher 2. On the other hand, it can avoid the problem of excessive water absorption of fly ash during the grinding process. Slurrying in the slurry tank 1 can reduce the water absorption of fly ash, ensuring that the fly ash has good water absorption performance after the grinding treatment of the crusher 2, which is beneficial to improving the production quality of the product; at the same time, the drum screening machine 3 can screen the slurry after grinding, which can ensure that the particle size of the fly ash entering the subsequent process is uniform, which is beneficial to improving the subsequent production quality of the product, and the unqualified slurry after screening is returned to the slurry tank 1 and the crusher 2 for repeated crushing, which can effectively improve the crushing quality of the unqualified slurry, ensure the uniform particle size after crushing, and avoid the phenomenon of over-grinding of the slurry.
[0012] Further, the hammer crushing mechanism includes a rotating shaft 26, a driving motor 27 and a crushing hammer 28. The driving motor is a structure used in the prior art. The finished product can be directly purchased according to the power size used. The rotating shaft 26 is rotatably mounted on the crushing shell 24. The driving motor 27 is mounted on the casing body 22, and the output shaft of the driving motor 27 is connected to the rotating shaft 24 in a transmission manner. A plurality of sleeves 210 are installed on the rotating shaft 24 at equal intervals. A plurality of crushing rods 29 are evenly distributed on the circumference of each sleeve 210. The crushing hammer 28 is detachably mounted on the crushing rod 29. When in use, the driving motor 27 drives the rotating shaft 24 to rotate. During the transmission process, the rotating shaft 24 drives the crushing rod 29 and the crushing hammer 28 to rotate. The rotating crushing rod 29 and the crushing hammer 28 can be hammered and crushed to achieve the purpose of crushing and grinding. In order to improve the hammering and crushing effect, preferably, a plurality of crushing teeth are arranged on the edge of the crushing hammer 28.
[0013] Furthermore, in order to increase the service life of the crusher 2 and reduce the vibration generated by crushing, first shock absorbing assemblies are symmetrically arranged on both sides of the crushing shell 24, and a second shock absorbing mechanism is symmetrically arranged on the bottom of the crushing shell 24.
[0014] Preferably, the first shock absorbing mechanism includes a first positioning plate 211 and a second movable rod 212, a shock absorbing housing 213 is arranged on the side wall of the housing body 22, the first positioning plate 211 is installed inside the shock absorbing housing 213, one end of the first movable rod 212 is installed on the side wall of the crushing shell 24 at an equal interval, the other end of the first movable rod 212 passes through the first positioning plate 211, and the other end of the first movable rod 212 is installed with a first limit block 214, and a first spring 215 is installed on the first movable rod 212 between the first positioning plate 211 and the crushing shell 24. The first spring 215 has good elastic potential energy. When the crusher 2 vibrates during operation, the first spring 215 cooperates with the first positioning plate 211 and the first movable rod 212, and the vibration generated will prompt the first movable rod 212 to slide left and right on the first positioning plate 211. During the sliding process, the first spring 215 can play a certain buffering role, greatly reducing the vibration generated by the crusher 2 in the horizontal direction.
[0015] Preferably, the second shock absorbing mechanism includes a second positioning plate 216 and a second movable rod 217. The second positioning plate 216 is installed on the inner wall of the casing body 22 above the discharge cone bucket 23. One end of the second movable rod 217 is installed at an equal interval on the bottom of the crushing shell 24. The other end of the second movable rod 217 penetrates the second positioning plate 216. A second limit block 218 is installed on the other end of the second movable rod 217. A second spring 219 is arranged on the second movable rod 217 between the second positioning plate 216 and the crushing shell 24. When the crusher 2 vibrates during operation, the second spring 219 cooperates with the second positioning plate 216 and the second movable rod 217. The vibration generated will prompt the second movable rod 217 to slide up and down on the second positioning plate 216. During the sliding process, the second spring 219 can play a certain buffering role, greatly reducing the vibration generated by the crusher 2 in the vertical direction.
[0016] Furthermore, in order to achieve a better screening effect, the drum screening machine 3 includes a frame 31 and a first support seat and a second support seat installed on the frame 31, a feed drum 32 is rotatably installed on the first support seat, a discharging drum 33 is installed on the second support seat, a screening drum 34 is installed between the feed drum 32 and the discharging drum 33, a gear transmission mechanism connected to the discharging drum 33 is arranged on the frame below the discharging drum 33, the gear transmission mechanism includes a motor, a gear and a gear ring, the gear is installed on the output shaft of the motor, the gear ring is installed on the discharging drum 33 and meshes with the gear, the aggregate cone hopper 7 is located on the frame 31 below the screening drum 34, when in use, the gear transmission mechanism drives the feed drum, the screening drum and the discharging drum to rotate, during the rotation process, after entering the screening drum from the feed drum, after being screened by the screening drum, qualified slurry falls into the aggregate cone hopper 7, and unqualified slurry is discharged from the discharging end into the recovery tank 8.
[0017] Preferably, in order to prevent the screening drum from being blocked during operation, a cross bar 35 is horizontally arranged in the screening drum 34, and the end of the cross bar 35 is installed in the recovery tank 8 through a vertical rod. A plurality of connecting rods are vertically installed at equal intervals on the cross bar 35, and a brush plate 36 that is in sliding contact with the screening drum 34 is installed at the lower end of each connecting rod. During the rotation of the screening drum, it is constantly in contact with the brush plate 36. During the contact process, the brush plate 36 can clean the screening drum to prevent the screening drum from being blocked.
[0018] In order to improve the continuity of slurry transportation between the slurry tank 1, crusher 2 and roller screening machine 3, slurry pumps are provided on the first conveying pipe 5, the second conveying pipe 6 and the circulation pipe 9. The slurry pump can use the structure in the existing technology, and the finished product can be directly purchased according to the pressure and flow rate used.
Claims
1. A wet crushing and screening system for tailings sand raw materials for brick making. Features: The invention comprises a pulping tank (1), a crusher (2), a drum screening machine (3) and a mixing tank (4), wherein the top of the pulping tank (1) is provided with a feed inlet and a liquid inlet, the interior of the pulping tank (1) is provided with a stirring mechanism, the crusher (2) comprises a feed shell (21), a shell body (22) and a discharge cone bucket (23) which are connected in sequence, a crushing shell (24) is installed on the inner wall of the shell body (22), a hammer crushing mechanism is installed inside the crushing shell (24), and a bottom of the crushing shell (24) is provided with a The slurry tank (1) is provided with a first conveying pipe (5) at the bottom thereof and connected to a feed shell (21); the discharge cone hopper (23) is provided with a second conveying pipe (6) at the bottom thereof and connected to a drum screening machine (3); a collecting cone hopper (7) is provided below the drum screening machine (3); the bottom of the collecting cone hopper (7) is connected to a mixing tank (4); a recovery trough (8) is provided below the discharge end of the drum screening machine (3); and a circulation pipe (9) is provided on the recovery trough (8) and connected to the slurry tank (1).
2. A wet crushing and screening system for tailings sand raw materials for brick making according to claim 1, Features: The hammer crushing mechanism comprises a rotating shaft (26), a driving motor (27) and a crushing hammer (28); the rotating shaft (26) is rotatably mounted on a crushing shell (24); the driving motor (27) is mounted on a casing body (22); and the output shaft of the driving motor (27) is transmission-connected to the rotating shaft (26); a plurality of shaft sleeves (210) are mounted on the rotating shaft (26) at equal intervals; a plurality of crushing rods (29) are evenly distributed on the circumference of each shaft sleeve (210); and the crushing hammer (28) is detachably mounted on the crushing rod (29).
3. A wet crushing and screening system for tailings sand raw materials for brick making according to claim 2, Features: A plurality of crushing teeth are arranged on the edge of the crushing hammer piece (28).
4. A wet crushing and screening system for tailings sand raw materials for brick making according to claim 1, Features: A first shock absorbing mechanism is symmetrically arranged on both sides of the crushing shell (24), and a second shock absorbing mechanism is symmetrically arranged on the bottom of the crushing shell (24).
5. A wet crushing and screening system for tailings sand raw materials for brick making according to claim 4, Features: The first shock absorbing mechanism comprises a first positioning plate (211) and a first movable rod (212); a shock absorbing housing (213) is arranged on the side wall of the housing body (22); the first positioning plate (211) is installed inside the shock absorbing housing (213); one end of the first movable rod (212) is installed on the side wall of the crushing shell (24) at an equal interval; the other end of the first movable rod (212) passes through the first positioning plate (211); a first limiting block (214) is installed on the other end of the first movable rod (212); and a first spring (215) is installed on the first movable rod (212) between the first positioning plate (211) and the crushing shell (24).
6. A wet crushing and screening system for tailings sand raw materials for brick making according to claim 4, Features: The second shock absorbing mechanism comprises a second positioning plate (216) and a second movable rod (217), wherein the second positioning plate (216) is mounted on the inner wall of the casing body (22) above the discharge cone bucket (23), one end of the second movable rod (217) is mounted at an equal interval on the bottom of the crushing shell (24), the other end of the second movable rod (217) passes through the second positioning plate (216), a second limit block (218) is mounted on the other end of the second movable rod (217), and a second spring (219) is arranged on the second movable rod (217) between the second positioning plate (216) and the crushing shell (24).
7. A wet crushing and screening system for tailings sand raw materials for brick making according to claim 1, Features: The drum screening machine (3) comprises a frame (31) and a first support seat and a second support seat mounted on the frame (31); a feed drum (32) is rotatably mounted on the first support seat, a discharge drum (33) is mounted on the second support seat, a screening drum (34) is mounted between the feed drum (32) and the discharge drum (33), a gear transmission mechanism connected to the discharge drum (33) is provided on the frame below the discharge drum (33), and the collecting cone bucket (7) is located on the frame (31) below the screening drum (34).
8. A wet crushing and screening system for tailings sand raw materials for brick making according to claim 7, Features: A cross bar (35) is horizontally arranged in the screening drum (34), and the end of the cross bar (35) is installed in the recovery tank (8) through a vertical rod. A plurality of connecting rods are vertically installed at equal intervals on the cross bar (35), and a brush plate (36) that is in sliding contact with the screening drum (34) is installed at the lower end of each connecting rod.
9. A wet crushing and screening system for tailings sand raw materials for brick making according to claim 1, Features: The first conveying pipe (5), the second conveying pipe (6) and the circulation pipe (9) are all provided with slurry pumps.