A high pressure roller mill material guiding device

Abstract

The utility model relates to a high pressure roller mill material guiding device, including material guiding support, material guiding support includes stand, the number of stand is four, and the fixed connection of stand between has the slab, and the stand and slab form rectangular frame body, and the surface of material guiding support is rectangular opening, and the bottom surface is shuttle shape opening, the surface of each stand is fixedly installed with the installation screw rod respectively, and the material guiding groove is fixedly installed through the installation screw rod. The material guiding groove includes the groove body, the surface of groove body is provided with the feed inlet, the bottom surface is provided with the discharge port, and the four corners of groove body are fixedly connected with the connecting plate, and the mounting hole is set up on the connecting plate. The utility model has the advantages of: the structure design is more reasonable, is easy to process, and the processing cost is low, and the operation is convenient, and the installation is convenient, and the material guiding groove can make most of the material enter laminated crushing area, reduce the proportion of edge material circulating closed circuit crushing, reduce the edge effect and improve the crushing efficiency, reduce the energy consumption of dry method powder making process.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary equipment for high pressure roller mills, specifically a material guiding device for high pressure roller mills. Background Technology

[0002] Currently, in the material crushing process of high-pressure roller mills, materials fall through chutes into the middle of the roller gap for crushing. However, in reality, the pressure distribution on the roller surface is not uniform because the high-pressure roller mill applies pressure to the material through the relative rotation of the moving and stationary rollers. The roller surface pressure is distributed along the roller width in a way that is high in the middle and low at both ends, with a pressure curve similar to a parabola. The pressure drop on the roller surface from the middle to the ends of the roller system can reach 70%, meaning that about 80% to 85% of the material bed is subjected to higher roller surface pressure, and about 20% of the material at the ends of the roller system is not fully crushed, which is known as the "edge effect." Due to the edge effect, the pressure at both ends of the rollers gradually decreases during the crushing operation of the high-pressure roller mill, resulting in poorer crushing effect for materials closer to the roller edge. After being crushed by the roller mill and then passing through the classifier, the material returns to the intermediate bin and re-enters the roller mill for secondary or even multiple crushing processes. This reduces the crushing efficiency and production capacity of the high-pressure roller mill and increases the energy consumption of the dry grinding system.

[0003] Therefore, in view of the above-mentioned practical problems, it is necessary to design a high-pressure roller mill feeding device that can solve the above technical problems. Utility Model Content

[0004] The purpose of this utility model is to provide a high-pressure roller mill material guiding device with a more reasonable structural design, easy processing, low processing cost, convenient operation and installation. The material guide trough can allow most of the material to enter the lamination crushing zone, reduce the proportion of edge material circulation closed-loop crushing, reduce edge effect, improve crushing efficiency, and reduce energy consumption in the dry powder making process.

[0005] This utility model discloses a material guiding device for a high-pressure roller mill, including a material guiding bracket, which includes four columns. A plate is fixedly connected between the columns, forming a rectangular frame. The surface of the material guiding bracket has a rectangular opening, and the bottom surface has a spindle-shaped opening. Each column has a mounting screw fixedly installed on its surface, and a material guiding groove is fixedly installed by the mounting screw.

[0006] The installed guide bracket provides stable support for the guide chute, capable of supporting the chute and the material flow, constraining the material movement direction, and ensuring continuous and efficient operation of the production process. The guide bracket ensures stable installation and operation of the guide chute, guaranteeing its stability and sealing during material transport, effectively preventing material spillage and dust overflow, improving the efficiency and environmental friendliness of the conveying system, and fully ensuring the safety of operators. The guide chute, installed together with the guide bracket between the intermediate hopper and the high-pressure roller mill, allows most of the material to enter the "laminated crushing" zone, where "splitting crushing" and "abrasive crushing" occur, causing stress cracks, intragranular cracks, and grain boundary cracks in the material. This allows large, easily rolling particles to be crushed into single particles in the pressure attenuation areas at both ends of the roller surface, reducing the proportion of closed-loop crushing of edge material, improving dry milling efficiency, and reducing energy consumption in the dry milling process.

[0007] The mounting screws, located at the four corners of the guide bracket, are used to fix the guide chute. These screws allow adjustment of the guide chute's height, ensuring that material is concentrated in the center of the conveyor belt before reaching belt speed, preventing spillage. Adjusting the guide chute's height better accommodates material drop and conveyor belt speed, allowing material to enter the conveyor belt smoothly and efficiently, reducing spillage and waste during transport. It also helps prevent uneven material accumulation on the conveyor belt, thus avoiding belt misalignment. Uneven material distribution leads to uneven belt tension, causing belt misalignment and affecting the normal operation of the conveyor. Adjusting the height of the guide chute ensures even material distribution on the conveyor belt, maintaining stable operation. Adjusting the chute height also optimizes the seal between the chute and the conveyor belt, preventing material dust from leaking through the gap, which is crucial for reducing environmental pollution and improving the quality of the working environment. Furthermore, adjusting the chute height better accommodates the characteristics of different materials, ensuring smooth and stable material transport.

[0008] The feed trough includes a trough body, with a feed inlet on the surface and a discharge outlet on the bottom. Connecting plates are fixedly connected to the four corners of the trough body, and mounting holes are provided on the connecting plates.

[0009] The feed inlet is rectangular, and the discharge outlet is spindle-shaped.

[0010] The trough is funnel-shaped.

[0011] The feed trough includes a trough body with a feed inlet on the surface and a discharge outlet on the bottom. The feed inlet is rectangular, and the discharge outlet is spindle-shaped. Increasing the feed inlet area and decreasing the discharge outlet area allows most of the material to enter the "lamination crushing" zone, where "splitting crushing" and "abrasive crushing" occur. This causes stress cracks, intragranular cracks, and grain boundary cracks in the material. Large, easily rolling particles are crushed into single particles in the pressure attenuation areas at both ends of the roller surface. This reduces the proportion of closed-loop crushing of edge material circulation, improves the efficiency of dry powder making, and reduces the energy consumption of the dry powder making process. Before reaching belt speed, the material is constrained in the middle of the conveyor belt to prevent spillage. The spindle-shaped cross-section reduces friction between the material and the trough wall, avoids accumulation and blockage, and inhibits dust diffusion.

[0012] The inner wall of the tank is fixedly connected with a wear-resistant plate.

[0013] The wear-resistant plates prevent the feed chute from wearing through due to prolonged material feeding, reducing maintenance costs and extending the equipment's service life to 6-12 months; they also improve conveying efficiency, reduce material blockage by 50%, adapt to materials of different particle sizes, and control dust emission concentration below 10mg / m³, meeting GB 16297-1996 standards.

[0014] The beneficial effects of this utility model are: 1) The installed guide support provides stable support for the guide chute, capable of supporting the chute and the material flow, constraining the material movement direction, and providing stable support to ensure continuous and efficient operation of the production process. The guide support ensures the stable installation and operation of the guide chute, guaranteeing its stability and sealing during material conveying, thereby effectively preventing material spillage and dust overflow, improving the operating efficiency and environmental friendliness of the conveying system, and fully ensuring the operational safety of personnel. The guide chute, installed together with the guide support between the intermediate silo and the high-pressure roller mill, allows most of the material to enter the "laminated crushing" zone, where "splitting crushing" and "abrasive crushing" occur, causing stress cracks, intragranular cracks, and grain boundary cracks in the material. This allows large, easily rolling particles to be crushed into single particles in the pressure attenuation area at both ends of the roller surface, reducing the proportion of closed-loop crushing of edge material circulation, improving the efficiency of dry milling, and reducing the energy consumption of the dry milling process.

[0015] 2) The mounting screws, located at the four corners of the guide bracket, are used to fix the guide chute. These screws allow adjustment of the chute's height, ensuring that material is concentrated in the middle of the conveyor belt before reaching belt speed, preventing spillage. Adjusting the chute's height better accommodates material drop and conveyor belt speed, allowing material to enter the conveyor belt smoothly and efficiently, reducing spillage and waste during transport. It also helps prevent uneven material accumulation on the conveyor belt, thus avoiding belt misalignment. Uneven material accumulation leads to uneven belt tension, causing belt misalignment and affecting the normal operation of the conveyor. By properly adjusting the height of the guide chute, it is possible to ensure that the material is evenly distributed on the conveyor belt, maintaining its stable operation. Adjusting the height of the guide chute also optimizes the sealing effect between the guide chute and the conveyor belt, preventing material dust from leaking out through the gap between the guide chute and the belt. This is of great significance for reducing environmental pollution and improving the quality of the working environment. Furthermore, adjusting the height of the guide chute allows for better adaptation to the characteristics of different materials, ensuring the smoothness and stability of material transport.

[0016] 3) The feed trough includes a trough body with a feed inlet on the surface and a discharge outlet on the bottom. The feed inlet is rectangular and the discharge outlet is spindle-shaped. This increases the feed inlet area and reduces the discharge outlet area, allowing most of the material to enter the "lamination crushing" zone, where "splitting crushing" and "abrasive crushing" occur. This causes stress cracks, intragranular cracks, and grain boundary cracks in the material. Large, easily rolling particles are crushed into single particles in the pressure attenuation areas at both ends of the roller surface, reducing the proportion of closed-loop crushing of edge material circulation, improving the efficiency of dry powder making, and reducing the energy consumption of the dry powder making process. Before reaching belt speed, the material is constrained in the middle of the conveyor belt to prevent spillage. The spindle-shaped cross-section reduces the friction between the material and the trough wall, avoiding accumulation and blockage, and inhibiting dust diffusion.

[0017] 4) The wear-resistant plates can prevent the feed chute from wearing through due to long-term material feeding, reduce maintenance costs, and extend the service life of the equipment to 6-12 months; improve conveying efficiency, reduce material blockage rate by 50%, adapt to materials of different particle sizes, and control dust emission concentration below 10mg / m³, which meets the GB 16297-1996 standard. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Top view; Figure 3 This is a top view of the material guide bracket in this utility model; Figure 4 This is a top view of the material guide trough in this utility model; Figure 5 for Figure 4 The main view; In the diagram: 1. Mounting screw; 2. Guide bracket; 201. Rectangular opening; 202. Shuttle opening; 203. Plate; 3. Guide groove; 3. Connecting plate; 301. Mounting hole; 302. Groove; 303. Inlet; 304. Outlet; 4. Wear-resistant plate; 5. Column; 6. Detailed Implementation

[0019] Example 1. The present invention will be further described below with reference to the accompanying drawings.

[0020] This utility model includes a mounting screw 1, a material guide bracket 2, a rectangular opening 201, a shuttle-shaped opening 202, a plate 203, a material guide groove 3, a connecting plate 301, a mounting hole 302, a groove 303, a feed inlet 304, a discharge outlet 4, and columns 6. The specific structure includes the material guide bracket 2, which includes four columns 6. The plate 203 is fixedly connected between the columns 6, forming a rectangular frame. The surface of the material guide bracket 2 is a rectangular opening 201, and the bottom surface is a shuttle-shaped opening 202. A mounting screw 1 is fixedly installed on the surface of each column 6, and the material guide groove 3 is fixedly installed by the mounting screw 1.

[0021] The feed trough 3 includes a trough body 303, with a feed inlet 304 on the surface of the trough body 303 and a discharge outlet 4 on the bottom surface. Connecting plates 301 are fixedly connected to the four corners of the trough body 303, and mounting holes 302 are provided on the connecting plates 301.

[0022] The feed inlet 304 is rectangular, and the discharge outlet 4 is spindle-shaped.

[0023] The trough 303 is funnel-shaped.

[0024] The four uprights 6 are not less than 40mm in diameter and are made of Q345 material; the plate 203 is made of steel profile; the four mounting screws 1 are not less than 20mm in diameter and are made of Q345 material.

[0025] Usage: Four columns 6 are used, with a plate 203 welded between each column 6. The trough 303 is suspended on four mounting screws 1 through the connecting plate 301 and mounting holes 302. The height of the guide trough 3 is adjusted by the mounting screws 1. Before adjusting the height of the guide trough 3, the roller surface pressure should be calculated to the position where it drops to 70% based on the roller surface length and roller diameter of the high-pressure roller mill, and then the height of the guide trough 3 is adjusted. The opening of the center position of the discharge port 4 is K=2.3d, where d is the maximum particle size of the feed, and d<30mm. The length of the shuttle-shaped discharge port 4 is calculated to the position where the roller surface pressure drops to 70% based on the pressure curve. The guide bracket 2 is installed between the intermediate silo and the high-pressure roller mill. The guide trough 3 allows most of the material to enter the "laminated crushing" zone, reducing the proportion of closed-loop crushing of edge material circulation, reducing the "edge effect", improving crushing efficiency, and reducing energy consumption in the dry powder making process.

[0026] Example 2. This utility model includes a mounting screw 1, a material guide bracket 2, a rectangular opening 201, a shuttle-shaped opening 202, a plate 203, a material guide groove 3, a connecting plate 301, a mounting hole 302, a groove 303, a feed inlet 304, a discharge outlet 4, a wear-resistant plate 5, and columns 6. The specific structure includes the material guide bracket 2, which includes four columns 6. The plate 203 is fixedly connected between the columns 6, forming a rectangular frame. The surface of the material guide bracket 2 is a rectangular opening 201, and the bottom surface is a shuttle-shaped opening 202. A mounting screw 1 is fixedly installed on the surface of each column 6, and the material guide groove 3 is fixedly installed by the mounting screw 1.

[0027] The feed trough 3 includes a trough body 303, with a feed inlet 304 on the surface of the trough body 303 and a discharge outlet 4 on the bottom surface. Connecting plates 301 are fixedly connected to the four corners of the trough body 303, and mounting holes 302 are provided on the connecting plates 301.

[0028] The feed inlet 304 is rectangular, and the discharge outlet 4 is spindle-shaped.

[0029] The trough 303 is funnel-shaped.

[0030] The inner wall of the groove 303 is fixedly connected with a wear-resistant plate 5.

[0031] The four uprights 6 are not less than 40mm in diameter and are made of Q345 material; the plate 203 is made of steel profile; the four mounting screws 1 are not less than 20mm in diameter and are made of Q345 material.

[0032] Four columns 6 are used, with a plate 203 welded between each column 6. The trough 303 is suspended on four mounting screws 1 through connecting plates 301 and mounting holes 302. The height of the guide trough 3 is adjusted by the mounting screws 1. Before adjusting the height of the guide trough 3, the roller surface pressure should be calculated to reach 70% based on the roller surface length and roller diameter of the high-pressure roller mill using the pressure curve, and then the height of the guide trough 3 can be adjusted. The opening of the center position of the discharge port 4 is K=2.3d, where d is the maximum particle size of the feed, and d < 30mm; the length of the shuttle-shaped discharge port 4 is calculated by the pressure curve to the position where the roller surface pressure drops to 70%; wear-resistant plate 5 is welded on the inner surface of the guide trough 3 body 303 to prevent the guide trough 3 from being worn through due to long-term material guiding; the guide support 2 is installed between the intermediate silo and the high-pressure roller mill; the guide trough 3 allows most of the material to enter the "laminated crushing" zone, reducing the proportion of closed-loop crushing of edge material circulation, reducing the "edge effect", improving crushing efficiency, and reducing the energy consumption of the dry powder making process.

Claims

1. A material guiding device for a high-pressure roller mill, characterized in that: The material guide bracket (2) includes four columns (6). A plate (203) is fixedly connected between the columns (6). The columns (6) and the plate (203) form a rectangular frame. The surface of the material guide bracket (2) is a rectangular opening (201), and the bottom surface is a spindle-shaped opening (202). Each column (6) is fixedly installed with a mounting screw (1), and a material guide groove (3) is fixedly installed through the mounting screw (1).

2. The high-pressure roller mill feeding device as described in claim 1, characterized in that: The material guide trough (3) includes a trough body (303), with a feed inlet (304) on the surface of the trough body (303) and a discharge outlet (4) on the bottom surface. Connecting plates (301) are fixedly connected to the four corners of the trough body (303), and mounting holes (302) are provided on the connecting plates (301).

3. The high-pressure roller mill feeding device as described in claim 2, characterized in that: The feed inlet (304) is rectangular, and the discharge outlet (4) is spindle-shaped.

4. The high-pressure roller mill feeding device as described in claim 3, characterized in that: The trough (303) is funnel-shaped.

5. The high-pressure roller mill feeding device as described in claim 4, characterized in that: The inner wall of the trough (303) is fixedly connected with a wear-resistant plate (5).

Images