A raw material discharging device for superfine fly ash production
By introducing a pressing mechanism and a vibration mechanism into the ultrafine fly ash production device, combined with an anti-sticking coating, the problem of fly ash agglomeration under humidity is solved, realizing automated material conveying, improving material flowability, and reducing dust flowability and material loss.
Patent Information
- Application Number
- CN202522681242.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-18
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-18
AI Technical Summary
Existing ultrafine fly ash production feeding devices are prone to fly ash particles agglomerating into clumps in high humidity environments, causing blockages in the feeding devices. Furthermore, existing mixing mechanisms are prone to dust pollution and have a high material loss rate.
A feeding device including a pressing mechanism, a vibration mechanism, and an anti-stick coating was designed. The material loosening and feeding smoothness are controlled by an electric telescopic rod and a vibration motor. Combined with the setting of a mesh plate and a feeding auger, the crushing and conveying of materials are realized.
This enabled smooth material feeding, reduced dust spillage and material loss, and improved production efficiency.
Smart Images
Figure CN224929931U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fly ash production technology, and more specifically to a raw material feeding device for the production of ultrafine fly ash. Background Technology
[0002] Ultrafine fly ash is an active mineral admixture made by further refining ordinary fly ash (usually with a particle size > 45 μm) to a specific surface area ≥ 600 m² / kg (or an average particle size ≤ 10 μm) through a grinding process. It is widely used in high-performance concrete, cement production and other fields.
[0003] During production, if the ambient humidity is slightly high, the moisture between fly ash particles will cause them to stick together and form clumps. This results in only a portion of the material being discharged from the silo, causing it to collapse while the rest remains stuck in place. The raw materials need to be evenly conveyed to the grinding mill by a feeding device, but the existing feeding device ensures even feeding by setting up a stirring mechanism. This stirring process not only easily causes dust pollution but also results in a high material loss rate.
[0004] Therefore, there is an urgent need for a raw material feeding device for the production of ultrafine fly ash. Utility Model Content
[0005] The technical problem to be solved by this utility model is to provide a raw material feeding device for the production of ultrafine fly ash, so as to solve the problems in the background art.
[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows.
[0007] A raw material feeding device for ultrafine fly ash production includes a feeding hopper with a cylindrical upper part and a funnel-shaped lower part, and a cover on the top of the feeding hopper; the cover is provided with a vent pipe and a feeding port with a valve, and a dust cover is provided on the vent pipe; a pressing mechanism is provided on the upper part of the feeding hopper, and a vibration mechanism is provided on the lower part of the feeding hopper, and the controlled ends of the pressing mechanism and the vibration mechanism are connected to a PLC controller; a discharge port is provided at the bottom of the feeding hopper, the discharge port is connected to a feeding auger, the feeding auger is connected to a conveying motor, and the conveying motor is connected to the PLC controller.
[0008] To further optimize the technical solution, the pressing mechanism includes an electric telescopic rod connected to the lower end face of the cover. The telescopic end of the electric telescopic rod is connected to a horizontally set pressure plate located inside the material feeding bin, and the pressure plate is evenly provided with through holes.
[0009] The technical solution is further optimized so that the distance between the edge of the pressure plate and the edge of the feeding bin is 2-5mm.
[0010] To further optimize the technical solution, the inner wall of the feeding hopper is provided with an anti-stick coating to reduce the adhesion of raw materials, and the thickness of the anti-stick coating is 0.5-1mm.
[0011] To further optimize the technical solution, the material feeding bin is equipped with a mesh plate that is parallel to the pressure plate. The diameter of the through holes on the pressure plate is 2-10cm, and the diameter of the mesh on the mesh plate is 1-5cm.
[0012] To further optimize the technical solution, the vibration mechanism includes a vibration motor installed in the hopper section of the feeding bin for loosening and sliding the material down, and the controlled end of the vibration motor is connected to a PLC controller.
[0013] To further optimize the technical solution, the feeding auger is inclined upwards, and the angle between the feeding auger and the horizontal plane is 15-30°.
[0014] The technological advancements achieved by this utility model are as follows, due to the adoption of the above technical solutions.
[0015] This utility model provides a raw material feeding device for ultrafine fly ash production. It employs a pressing mechanism to crush and break up large clumps of raw material that are adhered to the feeding hopper. A mesh plate further crushes the raw material. A vibrating motor in the funnel section at the bottom of the feeding hopper promotes smooth feeding. This utility model has the advantages of simple structure, smooth feeding, minimal dust overflow, and low material loss. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model from another angle; Figure 3 This is a partial sectional view of the present invention.
[0017] The components include: 1. feeding hopper, 2. cover, 21. vent pipe, 22. dust cover, 23. feeding port, 3. electric telescopic rod, 4. pressure plate, 5. mesh plate, 6. vibrating motor, 7. feeding auger, and 8. conveyor motor. Detailed Implementation
[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0019] A raw material feeding device for the production of ultrafine fly ash, combined with Figures 1 to 3 As shown, it includes a feeding hopper 1, a cover 2, a pressing mechanism, a mesh plate 5, a vibrating motor 6, a feeding auger 7, and a conveying motor 8. The cover 2 is equipped with a vent pipe 21, a dust cover 22, and a feeding port 23; the pressing mechanism includes an electric telescopic rod 3 and a pressure plate 4.
[0020] The upper part of the feeding hopper 1 is cylindrical and the lower part is funnel-shaped. The inner wall of the feeding hopper 1 is covered with an anti-stick coating with a thickness of 0.5-1mm. The anti-stick coating is a Teflon spray coating or a ceramic wear-resistant layer, used to reduce the adhesion of raw materials.
[0021] A cover 2 is installed on the top of the feeding hopper 1, and a sealing ring is installed on the edge of the cover 2 to prevent dust from overflowing and polluting the environment.
[0022] A vent pipe 21 is installed on the cover 2 to ensure that the air pressure in the discharge hopper 1 is the same as the atmospheric pressure, so that the material can automatically slide down under the action of gravity. A dust cover 22 is installed on the vent pipe 21 to prevent dust from overflowing.
[0023] The cap 2 is equipped with a feeding port 23 with a valve. When no material is being added, the valve is closed to achieve the sealing effect of the feeding port 23.
[0024] A pressing mechanism is installed on the upper part of the feeding hopper 1. The pressing mechanism includes an electric telescopic rod 3 connected to the lower end face of the cover 2, and the controlled end of the electric telescopic rod 3 is connected to a PLC controller. The electric telescopic rod 3 is positioned at the center of the cover 2 to ensure force balance. The telescopic end of the electric telescopic rod 3 is connected to a horizontally positioned pressure plate 4, which is located inside the feeding hopper 1 to press down the raw material inside the feeding hopper 1 during descent. A reinforcing rod can be connected between the electric telescopic rod 3 and the pressure plate 4 to increase the stability of the mechanism. The pressure plate 4 has uniformly distributed through holes, the diameter of which can be set to 2-10cm. The distance between the edge of the pressure plate 4 and the edge of the feeding hopper 1 is 2-5mm to prevent the pressure plate 4 from shifting during lifting and lowering, which could cause wear to the inner wall of the feeding hopper 1.
[0025] A vibration mechanism is installed at the bottom of the feeding hopper 1. The vibration mechanism includes a vibration motor 6 installed in the funnel part of the feeding hopper 1. The vibration mechanism is used to loosen the material and make it slide down. The controlled end of the vibration motor 6 is connected to a PLC controller.
[0026] A mesh screen 5 is installed inside the feeding hopper. The mesh screen 5 is located at the bottom of the cylindrical shape of the feeding hopper and is connected to the inner wall of the feeding hopper. The mesh screen 5 is arranged parallel to the pressure plate 4. The diameter of the mesh on the mesh screen 5 is 1-5cm. The mesh screen 5 can further break up the lumps in the raw materials and increase the uniformity of the raw materials.
[0027] A discharge port is provided at the bottom of the feeding hopper 1, and the discharge port is connected to the feeding auger 7. The feeding auger 7 is inclined upward, and the angle between the feeding auger 7 and the horizontal plane is 15-30° to increase the stability of the conveying process and reduce the risk of blockage. The feeding auger 7 is connected to the conveying motor 8, and the conveying motor 8 is connected to the PLC controller.
[0028] All connections in this device are sealed with sealant and gaskets to ensure tight connections and prevent material leakage during transport.
[0029] In practical use, the raw materials enter the feeding hopper 1 through the feeding port 23 for storage. After feeding is completed, the valve of the feeding port 23 is closed. The PLC controller sends signals to the feeding auger 7 and the vibration mechanism to drive the auger to transport and facilitate feeding. At the same time, the vibration motor 6 vibrates the bottom of the feeding hopper 1 to accelerate the sliding of the raw materials. During the feeding process, at regular intervals, the PLC controller sends signals to the pressing mechanism. The electric telescopic rod 3 drives the pressure plate 4 to press down, pressing down the raw materials that have not been fed in time and causing them to disperse under force. When the raw materials fall onto the mesh plate 5, the mesh plate 5 crushes the large clumps of material in the raw materials, further increasing the uniformity of the material to facilitate smooth feeding. After the raw materials enter the feeding auger 7 through the discharge port of the feeding hopper 1, they are discharged from the discharge end of the feeding auger 7 and enter the next process.
Claims
1. A raw material feeding device for the production of ultrafine fly ash, characterized in that: The hopper (1) is cylindrical at the top and funnel-shaped at the bottom. A cover (2) is provided on the top of the hopper (1). A vent pipe (21) and a feeding port (23) with a valve are provided on the cover (2). A dust cover (22) is provided on the vent pipe (21). A pressing mechanism is provided on the top of the hopper (1). A vibration mechanism is provided on the bottom of the hopper (1). The controlled ends of the pressing mechanism and the vibration mechanism are connected to a PLC controller. A discharge port is provided at the bottom of the hopper (1). The discharge port is connected to a feeding auger (7). The feeding auger (7) is connected to a conveying motor (8). The conveying motor (8) is connected to a PLC controller.
2. The raw material feeding device for ultrafine fly ash production according to claim 1, characterized in that: The pressing mechanism includes an electric telescopic rod (3) connected to the lower end face of the cover (2). The telescopic end of the electric telescopic rod (3) is connected to a pressure plate (4) that is horizontally set and located in the material feeding bin (1). The pressure plate (4) has through holes evenly opened on it.
3. The raw material feeding device for ultrafine fly ash production according to claim 2, characterized in that: The distance between the edge of the pressure plate (4) and the edge of the feeding bin (1) is 2-5mm.
4. The raw material feeding device for ultrafine fly ash production according to claim 3, characterized in that: The inner wall of the feeding hopper (1) is provided with an anti-stick coating to reduce the adhesion of raw materials, and the thickness of the anti-stick coating is 0.5-1mm.
5. The raw material feeding device for ultrafine fly ash production according to claim 4, characterized in that: The feeding hopper (1) is provided with a mesh plate (5) with mesh and arranged parallel to the pressure plate (4). The diameter of the through hole on the pressure plate (4) is 2-10cm, and the diameter of the mesh on the mesh plate (5) is 1-5cm.
6. The raw material feeding device for ultrafine fly ash production according to claim 1, characterized in that: The vibration mechanism includes a vibration motor (6) installed in the hopper section of the feeding bin (1) for loosening and sliding the material down, and the controlled end of the vibration motor (6) is connected to a PLC controller.
7. The raw material feeding device for ultrafine fly ash production according to claim 1, characterized in that: The feeding auger (7) is inclined upward, and the angle between the feeding auger (7) and the horizontal plane is 15-30°.