Multi-stage screening equipment for producing unshaped refractory material
By combining multi-stage screening equipment with water flow dynamics to achieve raw material grading and cleaning, the problems of high energy consumption and large footprint of traditional mechanical screening equipment are solved. This achieves efficient screening and cleaning integration, ensuring stable equipment operation and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LUOYANG RUITAI REFRACTORY MATERIALS CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-05-08
AI Technical Summary
Existing traditional mechanical screening equipment is energy-intensive, prone to wear and tear, occupies a large area, and cannot simultaneously remove impurities from the surface of raw materials, resulting in cumbersome production line equipment.
Design a multi-stage screening device that combines hydrodynamics to achieve raw material movement and screening, integrates screening and cleaning functions, utilizes propeller blades and direct-drive blades to form three-dimensional turbulence, simultaneously performs raw material grading and cleaning, and quickly solves screen hole clogging through an anti-clogging cylinder structure.
It reduces energy consumption, decreases equipment footprint, simplifies process flow, improves production efficiency, and ensures screening accuracy and stable equipment operation.
Smart Images
Figure CN224208205U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of screening equipment technology, and in particular to a multi-stage screening equipment for the production of unshaped refractory materials. Background Technology
[0002] As a key basic material in high-temperature industries such as metallurgy, building materials, and chemicals, the performance of unshaped refractories is closely related to the particle size distribution of the raw materials. Controlling the aggregate particle size distribution can not only improve the density and strength of the material, but also enhance its erosion resistance and thermal stability.
[0003] Currently, the industry commonly uses traditional mechanical screening equipment, such as vibrating screens and cylindrical screens, to classify and screen unshaped refractory materials. While these devices can achieve a certain degree of particle size separation, they have some drawbacks. For example, mechanical screening relies on a motor to directly drive the screen vibration or rotation, resulting in high energy consumption. Furthermore, long-term operation of the equipment can easily lead to component wear and tear, resulting in high maintenance costs. Secondly, the single function of mechanical screening can only complete particle size classification and cannot simultaneously remove impurities such as mud and dust adhering to the surface of the raw materials during the screening process. This requires additional cleaning equipment, leading to a large footprint and cumbersome processes in the production line. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a multi-stage screening device for the production of unshaped refractory materials. It has the advantages of integrating screening and cleaning functions, low energy consumption, and effective prevention of screen clogging, thus solving some of the problems mentioned in the background technology.
[0005] This utility model provides the following technical solution: a multi-stage screening device for the production of unshaped refractory materials, comprising a water tank and a base. A stirring shaft is rotatably installed at the bottom center of the water tank. Uniformly distributed propeller blades are fixedly installed on the outer side of the stirring shaft near the lower side. Uniformly distributed straight-push blades are fixedly installed on the outer side of the stirring shaft near the upper side. A large-hole screen cylinder is fixedly installed in the center of the interior of the water tank. A small-hole screen cylinder is fixedly installed on the outer side of the large-hole screen cylinder inside the water tank. Matching annular collection troughs are installed between the water tank and the small-hole screen cylinder, and between the small-hole screen cylinder and the large-hole screen cylinder. Uniformly distributed water passage holes are provided on the annular collection troughs. Pick-up and drop racks are fixedly connected to the upper end of the annular collection troughs on both the left and right sides.
[0006] Furthermore, a screening motor is fixedly installed at the lower middle of the water tank, and the upper output end of the screening motor is fixedly connected to the stirring shaft through a coupling. A drain outlet is provided at the front end of the water tank near the lower side, and the drain outlet is used to discharge the wastewater after screening and cleaning.
[0007] Furthermore, an anti-clogging cylinder is installed inside the large-hole screen cylinder. The anti-clogging cylinder is in close contact with the large-hole screen cylinder. The upper end of the anti-clogging cylinder has rolled edges on both the front and rear sides. The rolled edges are slidably connected to the large-hole screen cylinder. A positioning bolt is installed through and fixedly installed between the rolled edges and the large-hole screen cylinder at the middle. The anti-clogging cylinder and the screen holes on the large-hole screen cylinder are the same size and correspond one-to-one.
[0008] Furthermore, an anti-clogging cylinder II is installed inside the small-hole screen cylinder. The anti-clogging cylinder II is in close contact with the small-hole screen cylinder. The upper end of the anti-clogging cylinder II has rolled edges II on both the front and rear sides. The rolled edges II are slidably connected to the small-hole screen cylinder. A positioning bolt II is installed through and fixedly installed between the rolled edges II and the small-hole screen cylinder at the middle. The screen holes on the anti-clogging cylinder II and the small-hole screen cylinder are the same size and correspond one-to-one to avoid affecting the screening. The positioning bolts are used to fix the anti-clogging cylinder and the screen cylinder, preventing displacement due to water flow and changes in the passing area of the screen holes.
[0009] Furthermore, a rotating frame is fixedly installed on the upper end of the base. The rotating frame is fixedly fitted on the outside of the water tank. The water tank is rotatably installed on the upper end of the base through the rotating frame. Its rear end can also play a limiting role through structures such as electric push rods to improve stability.
[0010] Furthermore, a screw lifting mechanism is fixedly installed at the middle of the rear side of the upper end of the base. A movable part is threadedly connected to the screw of the screw lifting mechanism. An electric push rod is rotatably installed at the front end of the movable part. A connecting plate is fixedly installed at the middle of the rear end of the rotating frame. The front output end of the electric push rod is rotatably connected to the connecting plate, which facilitates the flipping operation of the water tank and makes it easy to clean the inside or perform other operations.
[0011] The advantages of this utility model are as follows:
[0012] 1. This equipment uses propeller blades and direct-drive blades to work together to agitate the water flow, creating a three-dimensional turbulent flow of the raw materials within the water tank. During the multi-stage screening process, the water flow simultaneously washes the surface of the raw materials, integrating screening and cleaning functions into one. Compared to traditional equipment that requires screening and cleaning to be done in separate steps, this equipment reduces the equipment footprint, simplifies the process, effectively improves production efficiency, and ensures that impurities are cleaned while the raw materials are being screened and graded.
[0013] 2. By setting a rotatable anti-clogging cylinder and using positioning bolts one and two to limit and release the connection with the screen cylinder, when the screen holes become blocked, simply unscrew the positioning bolts to remove them, and rotate the anti-clogging cylinder to push out the aggregate stuck on the screen holes. There is no need to disassemble the screen cylinder, which quickly solves the blockage problem, ensures the continuous and stable operation of the equipment, and avoids the impact of screen hole blockage on screening efficiency and accuracy. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0015] Figure 2 This is a schematic diagram of the internal structure of the water tank of this utility model;
[0016] Figure 3 This is a schematic diagram of the stirring structure of this utility model;
[0017] Figure 4 This is a schematic diagram of the bottom structure of the water tank of this utility model.
[0018] In the diagram: 1. Water tank; 2. Stirring shaft; 3. Propeller blade; 4. Straight-push blade; 5. Large-hole sieve cylinder; 6. Small-hole sieve cylinder; 7. Annular collection trough; 8. Water passage hole; 9. Pick-up and drop-off frame; 10. Screening motor; 11. Water outlet; 12. Anti-blocking cylinder one; 13. Rolled edge one; 14. Positioning bolt one; 15. Anti-blocking cylinder two; 16. Rolled edge two; 17. Positioning bolt two; 18. Base; 19. Rotating frame; 20. Screw lifting mechanism; 21. Moving part; 22. Electric push rod; 23. Connecting plate. Detailed Implementation
[0019] 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.
[0020] Please see Figures 1-4A multi-stage screening device for the production of unshaped refractory materials includes a water tank 1 and a base 18. A stirring shaft 2 is rotatably mounted at the bottom center of the water tank 1. Uniformly distributed propeller blades 3 are fixedly mounted on the outer side of the stirring shaft 2 near its lower side. Uniformly distributed straight-push blades 4 are fixedly mounted on the outer side of the stirring shaft 2 near its upper side. A large-aperture screen cylinder 5 is fixedly mounted in the center of the interior of the water tank 1. A small-aperture screen cylinder 6 is fixedly mounted on the outer side of the large-aperture screen cylinder 5 inside the water tank 1. Matching fittings are installed between the water tank 1 and the small-aperture screen cylinder 6, and between the small-aperture screen cylinder 6 and the large-aperture screen cylinder 5. The annular collection tank 7 is equipped with evenly distributed water holes 8. Pick-up and drop racks 9 are fixedly connected to the upper end of the annular collection tank 7 on both the left and right sides. A screening motor 10 is fixedly installed in the middle of the lower end of the water tank 1. The upper output end of the screening motor 10 is fixedly connected to the stirring shaft 2 via a coupling. A drain outlet 11 is provided at the front end of the water tank 1 near the lower side. During use, the water tank 1 is filled with clean water, and the screening motor 10 is turned on to drive the propeller blades 3 and straight-push blades 4 on the stirring shaft 2 to rotate. When adding raw materials, be careful to pour them into the large-hole sieve cylinder 5 in the middle. The large-angle propeller blade 3 rapidly agitates the bottom water flow, generating an upward thrust that guides the water flow in a spiral upward motion. Then, the small-angle straight-push blade 4 propels the water flow towards the wall of the large-pore screen cylinder 5. Through this synergistic effect, the raw material forms a three-dimensional turbulent flow within the water tank 1, breaking the regular arrangement of the raw material caused by the eddy current and promoting the mixing and dispersion of particles of different sizes. At the same time, under the entrainment effect of the water flow, raw materials with a size smaller than the sieve aperture size of the large-pore screen cylinder 5 can pass through, while some oversized aggregate particles remain inside the large-pore screen cylinder 5. This process continues until the smallest particle size raw material passes through. The smallest aggregate particles are screened between the small-hole screen cylinder 6 and the inner wall of the water tank 1. Medium-sized aggregate particles are screened between the small-hole screen cylinder 6 and the large-hole screen cylinder 5. The innermost large-hole screen cylinder 5 collects extra-large aggregate particles. Compared with traditional mechanical screening equipment, this device uses water flow power to realize the movement and screening of raw materials. This not only reduces energy consumption, but also washes the surface of the raw materials during the screening process, achieving the effect of cleaning and removing impurities simultaneously. This achieves the purpose of integrating screening and cleaning, reducing the equipment footprint, and improving product quality and production efficiency.
[0021] Please see Figure 2The large-hole sieve cylinder 5 has an anti-blocking cylinder 12 installed inside, which is fitted to the large-hole sieve cylinder 5. The upper end of the anti-blocking cylinder 12 has rolled edges 13 on both the front and rear sides, which are slidably connected to the large-hole sieve cylinder 5. A positioning bolt 14 passes through and is fixedly installed between the rolled edges 13 and the large-hole sieve cylinder 5 at the middle. The small-hole sieve cylinder 6 has an anti-blocking cylinder 2 15 installed inside, which is fitted to the small-hole sieve cylinder 6. The upper end of the anti-blocking cylinder 2 15 has rolled edges 16 on both the front and rear sides, which are slidably connected to the small-hole sieve cylinder 6. The screen cylinders 6 are slidably connected. The rolled edge 2 16 and the small hole screen cylinder 6 are both fixedly installed with positioning bolts 2 17 through the middle. The positioning bolts 1 14 or 2 17 can be removed by using a wrench or other means to loosen them, thereby releasing the limiting relationship between the large hole screen cylinder 5 and the anti-blocking cylinder 1 12 or the small hole screen cylinder 6 and the anti-blocking cylinder 2 15. Then, by rotating the anti-blocking cylinder 1 12 or the anti-blocking cylinder 2 15, the aggregate that may be stuck on the screen hole can be pushed out, preventing the use due to blockage and ensuring the rationality and integrity of the device during use.
[0022] Please see Figure 1 and Figure 4 A rotating frame 19 is fixedly installed on the upper end of the base 18. The rotating frame 19 is fixedly fitted on the outside of the water tank 1. A screw lifting mechanism 20 is fixedly installed at the middle of the rear side of the upper end of the base 18. A moving part 21 is threadedly connected to the screw of the screw lifting mechanism 20. An electric push rod 22 is rotatably installed at the front end of the moving part 21. A connecting plate 23 is fixedly installed at the middle of the rear end of the rotating frame 19. The front output end of the electric push rod 22 is rotatably connected to the connecting plate 23. The annular collection trough 7 can be removed from the water tank 1 by the pick-and-place frame 9, thereby removing the collected aggregate. The moving part 21 can be driven to rise by running the screw lifting mechanism 20. During the rising process of the moving part 21, the extension of its output end can be controlled to drive the water tank 1 to flip, thereby facilitating the removal of oversized aggregates or impurities by the staff.
[0023] Working Principle: During use, fill water tank 1 with clean water. Turn on the screening motor 10 to drive the propeller blades 3 and 4 on the stirring shaft 2. When adding raw materials, ensure they are poured into the large-aperture screen cylinder 5 in the middle. The large-angle propeller blades 3 quickly stir the water flow at the bottom, creating an upward thrust that guides the water flow in a spiral. Then, the small-angle 4 pushes the water flow towards the wall of the large-aperture screen cylinder 5. Through this synergistic effect, the raw materials form a three-dimensional turbulent flow within water tank 1, breaking the regular arrangement of the raw materials caused by the eddies and promoting the mixing and dispersion of particles of different sizes. Simultaneously, under the entrainment effect of the water flow, raw materials smaller than the sieve apertures of the large-aperture screen cylinder 5 can pass through, while some oversized aggregates remain inside the large-aperture screen cylinder 5. This process continues until the smallest particle size passes through the sieve apertures of the small-aperture screen cylinder 6, i.e., the smallest particle size in water tank 1. The smallest aggregate size is screened between the inner wall and the small-hole screen cylinder 6. Medium-sized aggregates are screened between the small-hole screen cylinder 6 and the large-hole screen cylinder 5. The innermost large-hole screen cylinder 5 collects extra-large aggregates. Furthermore, the annular collection trough 7 can be removed from the water tank 1 by the pick-and-place frame 9, thereby removing the collected aggregates. The moving part 21 can be raised by running the screw lifting mechanism 20. During the rise of the moving part 21, the extension of its output end can be controlled to cause the water tank 1 to flip. In addition, the positioning bolt 14 or positioning bolt 27 can be removed by using a wrench, thereby releasing the limiting relationship between the large-hole screen cylinder 5 and the anti-blocking cylinder 12 or the small-hole screen cylinder 6 and the anti-blocking cylinder 25. Then, by rotating the anti-blocking cylinder 12 or the anti-blocking cylinder 25, the aggregates that may be stuck on the screen holes can be pushed out.
Claims
1. A multi-stage screening device for the production of unshaped refractory materials, comprising a water tank (1) and a base (18), characterized in that: A stirring shaft (2) is rotatably installed at the bottom center of the water tank (1). A uniformly distributed propeller blade (3) is fixedly installed on the outer side of the stirring shaft (2) near the lower side. A uniformly distributed straight-push blade (4) is fixedly installed on the outer side of the stirring shaft (2) near the upper side. A large-hole sieve cylinder (5) is fixedly installed in the middle of the interior of the water tank (1). A small-hole sieve cylinder (6) is fixedly installed on the outer side of the large-hole sieve cylinder (5) inside the water tank (1). A matching annular collection trough (7) is installed between the water tank (1) and the small-hole sieve cylinder (6) and between the small-hole sieve cylinder (6) and the large-hole sieve cylinder (5). A uniformly distributed water passage hole (8) is provided on the annular collection trough (7). A pick-and-place rack (9) is fixedly connected to the upper end of the annular collection trough (7) on both the left and right sides.
2. The multi-stage screening equipment for the production of unshaped refractory materials according to claim 1, characterized in that: A screening motor (10) is fixedly installed at the middle of the lower end of the water tank (1). The upper output end of the screening motor (10) is fixedly connected to the stirring shaft (2) through a coupling. A water outlet (11) is provided at the front end of the water tank (1) near the lower side.
3. The multi-stage screening equipment for the production of unshaped refractory materials according to claim 1, characterized in that: An anti-blocking cylinder (12) is installed inside the large-hole screen cylinder (5). The anti-blocking cylinder (12) is in close contact with the large-hole screen cylinder (5). The upper end of the anti-blocking cylinder (12) is provided with rolled edges (13) on both the front and rear sides. The rolled edges (13) are slidably connected to the large-hole screen cylinder (5). The rolled edges (13) and the large-hole screen cylinder (5) are connected by a positioning bolt (14) that passes through and is fixedly installed in the middle.
4. The multi-stage screening equipment for the production of unshaped refractory materials according to claim 1, characterized in that: The small hole sieve cylinder (6) is equipped with an anti-blocking cylinder two (15) inside. The anti-blocking cylinder two (15) is in close contact with the small hole sieve cylinder (6). The upper end of the anti-blocking cylinder two (15) is provided with rolled edges two (16) on both the front and rear sides. The rolled edges two (16) are slidably connected to the small hole sieve cylinder (6). The rolled edges two (16) and the small hole sieve cylinder (6) are connected and fixedly installed with positioning bolts two (17) through the middle.
5. The multi-stage screening equipment for the production of unshaped refractory materials according to claim 1, characterized in that: A rotating frame (19) is fixedly installed on the upper end of the base (18), and the rotating frame (19) is fixedly fitted on the outside of the water tank (1).
6. The multi-stage screening equipment for the production of unshaped refractory materials according to claim 5, characterized in that: A screw lifting mechanism (20) is fixedly installed at the middle of the rear side of the upper end of the base (18). A movable part (21) is threadedly connected to the screw of the screw lifting mechanism (20). An electric push rod (22) is rotatably installed at the front end of the movable part (21). A connecting plate (23) is fixedly installed at the middle of the rear end of the rotating frame (19). The front output end of the electric push rod (22) is rotatably connected to the connecting plate (23).