High-efficiency discharging mechanism of vertical mill

Abstract

The application relates to the technical field of vertical grinding machines, in particular to a high-efficiency discharging mechanism of a vertical grinding machine, which comprises a vertical grinding machine, a discharging pipe arranged in the vertical grinding machine, a sweeping device arranged at the lower end of the discharging pipe, a grinding disc rotatably arranged at the lower end of the discharging pipe in the vertical grinding machine, the sweeping device comprising a mounting pipe and a sweeping plate, the mounting pipe being slidingly arranged at the lower end of the discharging pipe, and a limiting protrusion being arranged on the inner side of the mounting pipe, the second motor in the grading discharging device being directly connected with the grading wheel, so that the energy loss in the power transmission process is reduced, the cooperation of the wear-resistant ring, the grinding disc and the grinding material cone enables the material falling on the grinding disc to be preliminarily crushed, the grinding efficiency of the whole equipment is improved, the spacing between the wear-resistant ring and the grinding material cone is adjusted by a cylinder, and the preliminary crushing effect of the material is adjusted.

Description

Technical Field

[0001] This invention relates to the technical field of vertical mills, and in particular to a high-efficiency discharge mechanism for vertical mills. Background Technology

[0002] Vertical roller mills, also known as roller mills, are large-scale grinding equipment that integrates crushing, grinding, drying, grading, and conveying. Due to their advantages such as high grinding efficiency, strong drying capacity, simple process flow, and small footprint, they are widely used in industries such as cement, power, metallurgy, and chemical engineering for grinding cement raw materials, clinker, slag, coal, and other industrial raw materials.

[0003] The basic working principle of a vertical mill is bed grinding. Material falls into the center of the mill disc through the feeding device, moves towards the edge of the disc under centrifugal force, and enters the grinding track. The grinding rollers, under the pressure of a hydraulic device, grind the material. The ground material is then blown up by a high-speed annular airflow (from the air ring) at the edge of the mill disc. Coarser material falls back to the mill disc or scraper for re-grinding, while finer material is carried by the airflow into the upper classifier for sorting. Qualified fine powder is collected as the finished product, while unqualified coarse powder is returned to the mill disc for further grinding.

[0004] A five-roller vertical mill, disclosed in Chinese patent application number CN202110262861.7, relates to the field of vertical mill technology. A motor is mounted on the frame, connected to the shaft of a reducer via a main coupling. The output shaft of the reducer is connected to the grinding disc. Five roller devices are hinged to the frame, and the adjusting feet of each roller device are hinged to the upper ends of the piston rods of five hydraulic cylinders. The lower ends of the five hydraulic cylinders are mounted on the frame. A vertical mill cavity is mounted on the upper end of the frame. A screw conveyor is installed on the lower side of the vertical mill cavity, with its discharge port corresponding to the center of the grinding disc. A grading device is mounted on the upper end of the vertical mill cavity, with a discharge port connected to its upper end. Several grading roller devices are mounted on the grading device.

[0005] In the operation of existing vertical mills, there is a transmission device between the motor and the classifying wheel, which leads to power transmission loss and increases the energy consumption of the equipment. In addition, the material conveyed by the feeding device may occasionally be large in size. Although it can be ground after entering the vertical mill, it will affect the grinding efficiency of the vertical mill. Furthermore, a small amount of material that has not been dried in time will inevitably remain on the surface of the grinding disc, which will affect the operation of the vertical mill. If too much material adheres to the upper part of the vertical mill, it will increase the load on the grinding disc drive structure. Summary of the Invention

[0006] To solve the above-mentioned technical problems, the present invention provides a high-efficiency discharge mechanism for a vertical mill.

[0007] The present invention provides a high-efficiency discharge mechanism for a vertical mill, comprising a vertical mill, wherein a discharge pipe is provided inside the vertical mill, a sweeping device is provided at the lower end of the discharge pipe, and a grinding disc is rotatably arranged inside the vertical mill at the lower end of the discharge pipe.

[0008] The material sweeping device includes an installation tube and a material sweeping plate. The installation tube is slidably disposed at the lower end of the material discharge tube. A limiting protrusion is provided on the inner side of the installation tube, and a limiting groove matching the limiting protrusion is provided on the outer side of the material discharge tube. A wear-resistant ring is provided inside the installation tube. An installation rod is eccentrically positioned in the middle of the grinding disc, and an abrasive cone is provided at the upper end of the installation rod, which is matched with the wear-resistant ring.

[0009] Preferably, the vertical mill is provided with a discharge pipe at the upper side and a grading discharge device at the upper end of the vertical mill. The discharge pipe is connected to the grading discharge device. A dust removal pipe is provided at the upper end of the vertical mill, and the lower end of the dust removal pipe is connected to the discharge pipe. An auxiliary feeding device is provided outside the vertical mill and is connected to the middle of the discharge pipe. A drying air supply device is also provided at the side of the vertical mill. A grinding device is provided at the upper end of the grinding disc inside the vertical mill. A drive structure is provided at the lower end of the vertical mill, and the drive structure drives the grinding disc to rotate.

[0010] Preferably, the mounting tube is provided with a mounting frame, the mounting frame is provided with a mounting support rod, the sweeping plate is provided at the lower end of the mounting support rod, and the lower end of the sweeping plate is also provided with an extension rubber plate.

[0011] Preferably, a cylinder is provided on the outer side of the bottom of the feeding pipe, a connecting ring is provided on the outside of the mounting pipe, and the output end of the cylinder is connected to the connecting ring.

[0012] Preferably, the output end of the drying air supply device is connected to the lower end of the vertical mill, and the drying air supply device includes an air supply pipe, which is herringbone shaped, and an electric heating wire is installed inside the air supply pipe.

[0013] Preferably, multiple grading and discharge devices are provided, and the multiple grading and discharge devices are evenly arranged on the upper side of the vertical mill. Multiple grinding devices are provided, and the multiple grinding devices are evenly arranged on the upper side of the grinding disc.

[0014] Preferably, the grading and discharge device includes a discharge branch pipe, which is disposed inside the vertical mill. The side of the discharge branch pipe near the center of the vertical mill is connected to the discharge pipe. A grading wheel is rotatably disposed between the discharge branch pipe and the inner wall of the vertical mill. A drive unit is disposed on the outer side of the vertical mill at the corresponding position of the grading wheel.

[0015] Preferably, the drive unit includes a first motor, the output end of the first motor is provided with a drive wheel, the side end of the grading wheel is provided with a connecting shaft, the connecting shaft rotates through the side wall of the vertical mill, the side end of the connecting shaft is provided with a driven wheel, a transmission belt is provided between the drive wheel and the driven wheel, and the first motor is located at the upper end of the vertical mill.

[0016] Preferably, the drive unit includes a second motor, which is disposed on the side wall of the vertical mill. The output end of the second motor rotates through the side wall of the vertical mill and is connected to the grading wheel.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: By incorporating components such as a grading discharge device, cylinder, sweeping plate, extended rubber plate, wear-resistant ring, and abrasive cone, and through the direct connection between the second motor within the grading discharge device and the grading wheel, energy loss during power transmission is reduced. The cooperation of the wear-resistant ring, grinding disc, and abrasive cone allows the material falling onto the grinding disc to undergo initial compression and crushing, thereby improving the overall grinding efficiency of the equipment. The distance between the wear-resistant ring and the abrasive cone is adjusted by the cylinder, thus regulating the initial compression and crushing effect of the material. Furthermore, to increase the output of the grading discharge device, the drying and air supply device, wear-resistant ring, and abrasive cone are coordinated and adjusted to further improve both the grinding and output efficiency of the equipment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the vertical mill of the present invention; Figure 3 This is a schematic diagram of the internal structure of a conventional vertical mill. Figure 4 This is a schematic diagram of the sweeping device of the present invention; Figure 5 This is a schematic diagram of the structure of the first type of graded discharge device corresponding to Embodiment 2 of the present invention; Figure 6 This is a schematic diagram of the structure of the second type of graded discharge device corresponding to Embodiment 2 of the present invention; Figure 7 This is a schematic diagram of the grading wheel of the present invention; Figure 8 This is a schematic diagram of the wear-resistant ring and abrasive cone of the present invention.

[0019] Reference numerals in the attached drawings: 1. Vertical mill; 2. Feed pipe; 3. Sweeping device; 4. Grinding disc; 5. Discharge pipe; 6. Grading and discharge device; 7. Dust removal pipe; 8. Auxiliary feeding device; 9. Drying and air supply device; 10. Grinding device; 11. Drive structure; 301. Mounting pipe; 302. Wear-resistant ring; 303. Sweeping plate; 304. Mounting frame; 305. Mounting support rod; 306. Connecting ring; 401. Mounting rod; 402. Grinding cone; 601. Discharge branch pipe; 602. Grading wheel; 603. First motor; 604. Drive wheel; 605. Connecting shaft; 606. Driven wheel; 607. Transmission belt; 608. Second motor. Detailed Implementation

[0020] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0021] Example 1 like Figures 1 to 4As shown, this invention discloses a high-efficiency discharge mechanism for a vertical mill, including a vertical mill 1, a discharge pipe 2 inside the vertical mill 1, a sweeping device 3 at the lower end of the discharge pipe 2, a grinding disc 4 rotatably mounted inside the vertical mill 1 at the lower end of the discharge pipe 2, a discharge pipe 5 at the upper side of the vertical mill 1, a grading discharge device 6 at the upper end of the vertical mill 1, the discharge pipe 5 being connected to the grading discharge device 6, and a dust removal pipe 7 at the upper end of the vertical mill 1, the lower end of the dust removal pipe 7 being connected to the discharge pipe 2. The vertical mill 1 is externally equipped with an auxiliary feeding device 8, which is connected to the middle of the discharge pipe 2. A drying air supply device 9 is also installed on the side of the vertical mill 1. Inside the vertical mill 1, a grinding device 10 is installed on the upper end of the grinding disc 4. A drive structure 11 is installed at the lower end of the vertical mill 1, driving the grinding disc 4 to rotate. After the equipment starts, the auxiliary feeding device 8 feeds the material into the discharge pipe 2, and then, under the action of gravity, the material falls from the discharge pipe 2. During the process, the dust removal pipe 7 has an upward suction force that absorbs and removes dust from the material. The material in the feed pipe 2 falls to the center of the grinding disc 4. The grinding disc 4 is driven by the drive structure 11 to rotate. As the grinding disc 4 rotates, the material in the center of the grinding disc 4 moves to the surroundings under the action of centrifugal force. When the material is between the grinding disc 4 and the grinding device 10, it is ground by the grinding device 10. Then, the material continues to move outward under the action of centrifugal force. The drying air supply device 9 sends hot air into the vertical mill 1, so that an upward airflow is formed near the side wall inside the vertical mill 1. The material thrown out by the grinding disc 4 moves upward under the action of the airflow. When the upward-moving material passes through the grading and discharge device 6, the material is screened. The material that has achieved the grinding effect passes through the grading and discharge device 6 and is discharged from the discharge pipe 5. The material that does not meet the standard falls back onto the grinding disc 4 under the action of gravity for further grinding.

[0022] The material sweeping device 3 includes an installation pipe 301 and a sweeping plate 303. The installation pipe 301 is located at the lower end of the feeding pipe 2. An installation frame 304 is installed outside the installation pipe 301, and an installation support rod 305 is installed on the installation frame 304. The sweeping plate 303 is located at the lower end of the installation support rod 305. During the feeding process of the feeding pipe 2, the material will accumulate at the center of the upper end of the grinding disc 4. Then, as the grinding disc 4 rotates, with the assistance of centrifugal force, the material at the center of the upper end of the grinding disc 4 will slowly move outward. The rotation of the grinding disc 4 and the sweeping plate 303 will generate relative movement. During the process of the material moving outward of the grinding disc 4, the sweeping plate 303 will help to make the material move more evenly, ensuring that the material is spread evenly on the entire upper end of the grinding disc 4, thereby improving the subsequent grinding effect and increasing the feeding efficiency.

[0023] The output end of the drying air supply device 9 is connected to the lower end of the vertical mill 1. The drying air supply device 9 includes an air supply pipe, which is herringbone shaped. An electric heating wire is installed inside the air supply pipe. The herringbone air supply pipe has two air outlets, which are connected to the lower ends of the vertical mill 1 on both sides respectively. The connection between the air supply pipe and the vertical mill 1 is inclined, so that the air force entering the vertical mill 1 presents a spiral upward air field. With the assistance of the electric heating wire, the air supply pipe is heated, so that the air force entering the vertical mill 1 is hot air, which can dry the material in the vertical mill 1 and prevent the material from sticking to the grinding disc 4.

[0024] like Figure 3 As shown, the conventional grading and discharge device 6 is a large grading wheel 602 at the upper end of the vertical mill 1. It is driven to rotate by an independent motor at the upper end of the vertical mill 1. The spiral upward air force inside the vertical mill 1 carries the ground material upward. The qualified material will pass through the grading wheel 602 and enter the interior of the grading wheel 602, and then be discharged through the discharge pipe 5.

[0025] Multiple grinding devices 10 are provided, and the multiple grinding devices 10 are evenly arranged on the upper end of the grinding disc 4. The material is ground and processed by the cooperation of multiple grinding devices 10 and grinding disc 4, so that the grinding efficiency of the material is higher.

[0026] During use, the auxiliary feeding device 8 uses the rotation of the feeding screw as power to move the material forward. The material is pushed into the feeding pipe 2 and falls from the feeding pipe 2 under the action of gravity. During this process, there is an upward suction force in the dust removal pipe 7, which absorbs and removes the dust in the material. The material in the feeding pipe 2 will fall at the center of the grinding disc 4. The grinding disc 4 is driven by the drive structure 11 to rotate. As the grinding disc 4 rotates, the material at the center of the grinding disc 4 moves to the surroundings under the action of centrifugal force.

[0027] During this process, the rotation of the grinding disc 4 and the relative movement of the sweeping plate 303 cause the material to move towards the outside of the grinding disc 4. With the assistance of the sweeping plate 303, the material moves more evenly, ensuring that the material is spread evenly on the entire upper part of the grinding disc 4, thereby improving the subsequent grinding effect and increasing the efficiency of material feeding.

[0028] As the grinding disc 4 rotates, when the material is located between the grinding disc 4 and the grinding device 10, the material is ground by the grinding device 10. Then, under the action of centrifugal force, the material continues to move outward. The drying air supply device 9 sends hot air into the vertical mill 1, so that an upward airflow is formed near the side wall inside the vertical mill 1. The spiral upward airflow inside the vertical mill 1 carries the ground material upward. The qualified material will pass through the classifying wheel 602 and enter the classifying wheel 602, and then be discharged through the discharge pipe 5. The unqualified material will fall back onto the grinding disc 4 under the action of gravity for further grinding.

[0029] Example 2 Based on the high-efficiency discharge mechanism of the vertical mill in Embodiment 1 above, if the conventional classifying wheel 602 malfunctions during use, the entire equipment needs to be shut down for repair, thus halting the entire process. To solve this problem, the following technical solution is proposed: like Figures 1 to 7 As shown, multiple grading discharge devices 6 are provided, and the multiple grading discharge devices 6 are evenly arranged on the upper side of the vertical mill 1. The material is screened through multiple grading discharge devices 6. When one fails, the operation of other grading discharge devices 6 is not affected during maintenance, ensuring that the entire process can be carried out continuously.

[0030] The grading and discharge device 6 includes a discharge branch pipe 601, which is located inside the vertical mill 1. The side of the discharge branch pipe 601 closest to the center of the vertical mill 1 is connected to the discharge pipe 5. A grading wheel 602 is rotatably arranged between the discharge branch pipe 601 and the inner wall of the vertical mill 1. A drive unit is arranged on the outside of the vertical mill 1 at the corresponding position of the grading wheel 602. The rotation of the grading wheel 602 is driven by the auxiliary drive unit. The spiral upward air force inside the vertical mill 1 carries the ground material upward. The qualified material will pass through the grading wheel 602 and enter the interior of the grading wheel 602, and then be discharged from the discharge pipe 5. The unqualified material will fall back onto the grinding disc 4 under the action of gravity for further grinding.

[0031] The drive unit includes a first motor 603, with a drive wheel 604 at the output end of the first motor 603, a connecting shaft 605 at the side end of the grading wheel 602, the connecting shaft 605 rotatably passing through the side wall of the vertical mill 1, and a driven wheel 606 at the side end of the connecting shaft 605. A transmission belt 607 is provided between the drive wheel 604 and the driven wheel 606. The first motor 603 is located at the upper end of the vertical mill 1. When the first motor 603 is started, its output end drives the drive wheel 604 to rotate. The rotation of the drive wheel 604, with the assistance of the transmission belt 607, drives the driven wheel 606 to rotate. The rotation of the driven wheel 606, with the assistance of the connecting shaft 605, drives the grading wheel 602 to rotate. The first motor 603 provides power for the rotation of the grading wheel 602, thus improving the screening effect of the grading wheel 602.

[0032] In the process of using this invention, once a grading and discharging device 6 malfunctions, without stopping the machine, the maintenance worker can quickly remove the grading and discharging device 6 and insert a pipe of the same volume as the grading and discharging device 6 into the installation location of the grading and discharging device 6 to close the discharge channel corresponding to the grading and discharging device 6. Then, the grading and discharging device 6 is repaired and reinstalled after the repair is completed, so that the entire equipment can achieve continuous production.

[0033] However, during the use of the aforementioned grading and discharging device 6, there is a drive wheel 604, a transmission belt 607, a driven wheel 606, and a connecting shaft 605 between the first motor 603 and the grading wheel 602, resulting in power transmission losses between the first motor 603 and the grading wheel 602. In order to further reduce the power transmission losses between the first motor 603 and the grading wheel 602, the drive unit of the grading and discharging device 6 is structurally optimized. like Figure 6 As shown, the drive unit includes a second motor 608, which is located on the side wall of the vertical mill 1. The output end of the second motor 608 rotates through the side wall of the vertical mill 1 and is connected to the classifying wheel 602. When the second motor 608 is started, its output end drives the classifying wheel 602 to rotate. The direct connection between the output end of the second motor 608 and the classifying wheel 602 reduces power transmission loss and improves the energy utilization efficiency of the second motor 608.

[0034] Example 3 Based on the high-efficiency discharge mechanism of the vertical mill in Embodiment 2 above, during use, the material conveyed by the auxiliary feeding device 8 may occasionally contain materials with larger volumes. After entering the vertical mill 1, although these materials can be ground, they will affect the grinding efficiency of the vertical mill 1. In addition, a small amount of material that has not been dried in time will inevitably remain on the surface of the grinding disc 4, which will affect the operation of the vertical mill 1. If too much material adheres to the upper part of the vertical mill 1, it will increase the load on the drive structure 11. Therefore, the following technical solution is proposed: like Figures 1 to 8 As shown, the feeding tube 2 is slidably disposed at the lower end of the mounting tube 301. A limiting protrusion is provided on the inner side of the mounting tube 301, and a limiting groove matching the limiting protrusion is provided on the outer side of the feeding tube 2. With the assistance of the limiting protrusion and the limiting groove, the feeding tube 2 can be relatively displaced with the mounting tube 301.

[0035] A wear-resistant ring 302 is installed inside the mounting tube 301. An mounting rod 401 is eccentrically installed in the middle of the grinding disc 4. An abrasive cone 402 is installed at the upper end of the mounting rod 401. The abrasive cone 402 matches the wear-resistant ring 302. When the grinding disc 4 rotates, the abrasive cone 402 is driven to rotate with the assistance of the mounting rod 401. The rotation of the abrasive cone 402 and the wear-resistant ring 302 cooperate to perform preliminary crushing on the material passing between them, so as to reduce the volume of the material and enable the vertical mill 1 to perform better grinding.

[0036] An extended rubber plate is also provided at the lower end of the sweeping plate 303. When the extended rubber plate is attached to the surface of the grinding disc 4, it can scrape off the material adhering to the upper end of the grinding disc 4 without damaging the sweeping plate 303 and the grinding disc 4, thus improving the stability of the equipment.

[0037] A cylinder is installed on the outer side of the bottom of the feeding pipe 2, and a connecting ring 306 is installed on the outside of the mounting pipe 301. The output end of the cylinder is connected to the connecting ring 306. When the cylinder is started, the output end of the cylinder drives the connecting ring 306 to rise and fall, thereby causing the mounting pipe 301 to rise and fall.

[0038] During the use of this invention, when the grading and discharge device 6 is damaged and disassembled for repair, the discharge efficiency of the qualified powder of the entire vertical mill 1 will decrease. In order to maintain the feeding and discharging balance of the vertical mill 1, the feeding efficiency of the auxiliary feeding device 8 will also decrease accordingly.

[0039] At the same time, when the graded discharge device 6 is damaged and disassembled for repair, the cylinder will also operate. At this time, the discharge amount of the discharge pipe 2 is reduced, and the output end of the cylinder drives the installation pipe 301 to descend through the connecting ring 306. After the installation pipe 301 descends, the extended rubber plate at the lower end of the sweeping plate 303 will stick to the upper surface of the grinding disc 4, thereby scraping and cleaning the material adhering to the surface of the grinding disc 4.

[0040] After the graded discharge device 6 is repaired and reinstalled, the feeding efficiency of the auxiliary feeding device 8 returns to its original state, and the cylinder operates accordingly. At this time, the feeding amount of the discharge pipe 2 increases, and the output end of the cylinder drives the installation pipe 301 to rise through the connecting ring 306. After the installation pipe 301 rises, the gap between the abrasive cone 402 and the wear-resistant ring 302 decreases. When the material in the discharge pipe 2 passes between the abrasive cone 402 and the wear-resistant ring 302, with the rotation of the grinding disc 4, the abrasive cone 402 and the wear-resistant ring 302 cooperate to initially squeeze and crush the material, thereby reducing the volume of the material falling on the upper end of the grinding disc 4 and making the subsequent grinding efficiency higher.

[0041] The operation of the cylinder can also be actively controlled through the equipment's control box. During manual adjustment of the equipment, increasing the air volume of the drying air supply device 9 can increase the output of the grading and discharging device 6. If the output of the grading and discharging device 6 does not increase after increasing the air volume of the drying air supply device 9, it indicates that the equipment's grinding efficiency limit has been reached. At this time, by controlling the operation of the cylinder, the distance between the abrasive cone 402 and the wear-resistant ring 302 is reduced, so that the volume of material falling on the upper part of the grinding disc 4 is smaller, thereby improving the equipment's grinding efficiency and achieving a larger output of the grading and discharging device 6 after increasing the air volume of the drying air supply device 9.

[0042] The main functions achieved by this invention are as follows: by setting up components such as a grading and discharging device 6, a cylinder, a sweeping plate 303, an extended rubber plate, a wear-resistant ring 302, and an abrasive cone 402, and by directly connecting the second motor 608 in the grading and discharging device 6 with the grading wheel 602, energy loss during power transmission is reduced. Through the cooperation of the wear-resistant ring 302, the grinding disc 4, and the abrasive cone 402, the material falling on the grinding disc 4 is initially crushed and pulverized, thereby improving the grinding efficiency of the entire equipment. The distance between the wear-resistant ring 302 and the abrasive cone 402 is adjusted by the cylinder, thereby adjusting the initial crushing and pulverizing effect of the material. In order to increase the output of the grading and discharging device 6, the drying and air supply device 9, the wear-resistant ring 302, and the abrasive cone 402 are coordinated and adjusted to improve the grinding efficiency and output efficiency of the equipment.

[0043] The present invention provides a high-efficiency discharge mechanism for a vertical mill. Its installation method, connection method, or setting method are all common mechanical methods. Any method that can achieve its beneficial effect can be implemented.

[0044] All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0045] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A high-efficiency discharge mechanism for a vertical mill, comprising a vertical mill (1), characterized in that, The vertical mill (1) is provided with a feeding pipe (2), and a sweeping device (3) is provided at the lower end of the feeding pipe (2). A grinding disc (4) is rotatably provided at the lower end of the feeding pipe (2) inside the vertical mill (1). The sweeping device (3) includes an installation tube (301) and a sweeping plate (303). The installation tube (301) is slidably disposed at the lower end of the feed tube (2). A limiting protrusion is provided on the inner side of the installation tube (301). A limiting groove matching the limiting protrusion is provided on the outer side of the feed tube (2). A wear-resistant ring (302) is provided inside the installation tube (301). An installation rod (401) is eccentrically provided in the middle of the grinding disc (4), and an abrasive cone (402) is provided at the upper end of the installation rod (401). The abrasive cone (402) matches the wear-resistant ring (302).

2. The high-efficiency discharge mechanism for a vertical mill as described in claim 1, characterized in that, The vertical mill (1) is provided with a discharge pipe (5) at the upper side. The vertical mill (1) is also provided with a grading discharge device (6) at the upper end. The discharge pipe (5) is connected to the grading discharge device (6). The vertical mill (1) is provided with a dust removal pipe (7) at the upper end. The lower end of the dust removal pipe (7) is connected to the feeding pipe (2). The vertical mill (1) is provided with an auxiliary feeding device (8) outside. The auxiliary feeding device (8) is connected to the middle of the feeding pipe (2). The vertical mill (1) is also provided with a drying air supply device (9) at the side. The vertical mill (1) is provided with a grinding device (10) at the upper end of the grinding disc (4) inside. The vertical mill (1) is provided with a drive structure (11) at the lower end. The drive structure (11) drives the grinding disc (4) to rotate.

3. The high-efficiency discharge mechanism for a vertical mill as described in claim 1, characterized in that, An installation frame (304) is provided on the outside of the installation tube (301), and an installation support rod (305) is provided on the installation frame (304). The material sweeping plate (303) is located at the lower end of the installation support rod (305), and an extension rubber plate is also provided at the lower end of the material sweeping plate (303).

4. The high-efficiency discharge mechanism for a vertical mill as described in claim 1, characterized in that, A cylinder is provided on the outer side of the bottom of the feeding pipe (2), and a connecting ring (306) is provided on the outside of the mounting pipe (301). The output end of the cylinder is connected to the connecting ring (306).

5. The high-efficiency discharge mechanism for a vertical mill as described in claim 2, characterized in that, The output end of the drying air supply device (9) is connected to the lower end of the vertical mill (1). The drying air supply device (9) includes an air supply pipe, which is herringbone shaped, and an electric heating wire is installed inside the air supply pipe.

6. The high-efficiency discharge mechanism for a vertical mill as described in claim 2, characterized in that, Multiple graded discharge devices (6) are provided, and the multiple graded discharge devices (6) are evenly arranged on the upper side of the vertical mill (1). Multiple grinding devices (10) are provided, and the multiple grinding devices (10) are evenly arranged on the upper side of the grinding disc (4).

7. The high-efficiency discharge mechanism for a vertical mill as described in claim 2, characterized in that, The grading and discharge device (6) includes a discharge branch pipe (601), which is located inside the vertical mill (1). The side of the discharge branch pipe (601) near the center of the vertical mill (1) is connected to the discharge pipe (5). A grading wheel (602) is rotatably arranged between the discharge branch pipe (601) and the inner wall of the vertical mill (1). A drive unit is provided on the outside of the vertical mill (1) at the corresponding position of the grading wheel (602).

8. The high-efficiency discharge mechanism for a vertical mill as described in claim 7, characterized in that, The drive unit includes a first motor (603), the output end of the first motor (603) is provided with a drive wheel (604), the side end of the grading wheel (602) is provided with a connecting shaft (605), the connecting shaft (605) rotates through the side wall of the vertical mill (1), the side end of the connecting shaft (605) is provided with a driven wheel (606), a transmission belt (607) is provided between the drive wheel (604) and the driven wheel (606), and the first motor (603) is located at the upper end of the vertical mill (1).

9. The high-efficiency discharge mechanism for a vertical mill as described in claim 7, characterized in that, The drive unit includes a second motor (608), which is located on the side wall of the vertical mill (1). The output end of the second motor (608) rotates through the side wall of the vertical mill (1) and is connected to the grading wheel (602).

Images