Coal mill with anti-sticking structure
By introducing cleaning components and coal grinding components into the coal mill, the problems of clogging of the feed pipe and unadjustable gap between the grinding roller and the grinding disc are solved, and the cleaning of the feed pipe and the improvement of the coal grinding effect are achieved, and the service life of the equipment is extended.
Patent Information
- Application Number
- CN202421628689.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-07-10
AI Technical Summary
The feed pipe of existing coal mills is prone to clogging and the gap between the grinding roller and the grinding disc cannot be adjusted with the changes in coal powder, which affects the effect of the coal grinding.
The cleaning components and coal grinding components are designed. The cleaning components scrape off the inner wall of the feed pipe by rotating the scraper. The gap between the coal grinding components can be adjusted through the grinding roller and the grinding disc to adapt to the changes in the coal powder. A blade is installed to initially cut the coal material, and the protective shell protects key components.
Ensure that the feed pipe is not blocked, improve the service life of the coal mill and the coal grinding effect, prevent key components from getting worn, and extend the service life of the equipment.
Smart Images
Figure CN223159350U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of coal mill equipment, in particular to a coal mill with an anti-sticking structure. Background Art
[0002] A coal mill is a mechanical device specifically used for grinding coal powder, and is widely used in industries such as thermal power generation, metallurgy, and refining. Its main function is to crush coal blocks and grind them into coal powder to meet the requirements of the coal powder furnace for the particle size and specific surface area of the coal powder, so that the coal powder can burn fully during the combustion process.
[0003] When the existing coal mill is in use, due to the certain humidity of the coal material and its large adhesiveness, it is easy to adhere into blocks on the inner wall of the feed pipe. Over time, the feed pipe is prone to blockage, causing damage to the coal mill. In addition, since the coal powder will become finer and finer during grinding, the gap between the grinding roller and the grinding disc of the existing coal mill cannot be adjusted with the change of the coal powder, which affects the coal grinding effect. Summary of the Utility Model
[0004] In order to overcome the shortcomings that the feed pipe of the existing coal mill is prone to blockage and the gap between the grinding roller and the grinding disc cannot be adjusted with the change of the coal powder, the utility model provides a coal mill with an anti-sticking structure.
[0005] The technical solution is as follows: A coal mill with an anti-sticking structure includes a base, a casing, a first motor, a feed hopper, a feed pipe, a discharge pipe, a coal grinding assembly, and a cleaning assembly. The top surface of the base is fixedly connected with the casing. An air inlet is opened on the left side of the lower part of the casing. The first motor is installed at the top inside the base. The feed hopper is fixedly connected to the rear side of the top of the casing. The feed pipe penetrates through the center of the top of the casing and is connected to the feed hopper. The discharge pipe penetrates through the front side of the top of the casing. The cleaning assembly is arranged inside the feed hopper, and the coal grinding assembly is arranged inside the casing.
[0006] Preferably, the coal grinding assembly includes a grinding disc, grinding rollers, and a triangular frame. The grinding disc is rotatably connected to the top of the base, and the bottom of the grinding disc is fixedly connected to the output shaft of the first motor. The triangular frame is slidably connected to the middle inside the casing. The feed pipe slidably penetrates through the middle of the triangular frame. Three grinding rollers are rotatably connected to the bottom of the triangular frame, and the grinding rollers are all in contact with the grinding disc.
[0007] Preferably, the coal grinding assembly further includes elastic members and guide rods. Guide rods are fixedly connected to the bottoms of the three corners of the triangular frame, and elastic members are sleeved on the guide rods. One end of the elastic member is connected to the triangular frame, and the other end of the elastic member is connected to the casing.
[0008] Preferably, the cleaning component includes a second motor, a worm, a worm gear, a rotating rod and a rotating scraping blade. A second motor is fixedly connected to the front part on the right side of the feed hopper. The output shaft of the second motor is fixedly connected to the worm. The worm is rotatably connected to the feed hopper. A rotating rod is rotatably connected to the inner top of the feed hopper. The rotating rod extends downward into the feed pipe. A worm gear is fixedly connected to the upper end of the rotating rod. The worm gear meshes with the worm. A rotating scraping blade is fixedly connected to the rotating rod. The rotating scraping blade contacts the inner wall of the feed pipe.
[0009] Preferably, it further includes blades. A plurality of blades are fixedly connected to the inner bottom surface of the feed hopper.
[0010] Preferably, it further includes a protective shell. A protective shell is fixedly connected to the front side of the upper part inside the feed hopper.
[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0012] 1. By arranging the cleaning component in the present utility model, the rotating scraping blade can scrape the sticky coal on the inner wall of the feed pipe, ensuring that the inner wall of the feed pipe is not blocked and ensuring the normal use of the coal mill. By arranging the coal grinding component, the gap between the coal grinding roller and the coal grinding disc can be adjusted according to the change of the coal powder, ensuring the coal grinding effect.
[0013] 2. By arranging the blades in the present utility model, the coal material can be preliminarily cut before entering the feed pipe, making it easier to grind. By arranging the protective shell, it can prevent the coal material from entering the meshing part of the worm and the worm gear, thereby prolonging its service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is a three-dimensional structural schematic diagram of the present utility model.
[0015] Figure 2 is a cross-sectional view of the base and the machine shell of the present utility model.
[0016] Figure 3 is an installation structural schematic diagram of the coal grinding component of the present utility model.
[0017] Figure 4 is an installation structural schematic diagram of the feed hopper and the cleaning component of the present utility model.
[0018] Figure 5 is an installation structural schematic diagram of the cleaning component and the feed pipe of the present utility model.
[0019] Marks in the drawings: 1 - base, 2 - machine shell, 201 - air inlet, 3 - first motor, 4 - feed hopper, 5 - feed pipe, 6 - discharge pipe, 7 - coal grinding component, 701 - coal grinding disc, 702 - coal grinding roller, 703 - triangular frame, 704 - elastic member, 705 - guide rod, 8 - cleaning component, 801 - second motor, 802 - worm, 803 - worm gear, 804 - rotating rod, 805 - rotating scraping blade, 9 - blade, 10 - protective shell. Detailed implementation manners
[0020] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.
[0021] Embodiment: A coal mill with an anti - adhesion structure, as Figure 1 and Figure 2 shown, includes a base 1, a casing 2, a first motor 3, a feed hopper 4, a feed pipe 5, a discharge pipe 6, a coal grinding assembly 7 and a cleaning assembly 8. The top surface of the base 1 is fixedly connected with the casing 2. An air inlet 201 is opened on the left side of the lower part of the casing 2. The first motor 3 is installed at the top inside the base 1. The feed hopper 4 is fixedly connected to the rear side of the top of the casing 2. The feed pipe 5 penetrates through the center of the top of the casing 2 and is connected to the feed hopper 4 in communication. The discharge pipe 6 penetrates through the front side of the top of the casing 2. A cleaning assembly 8 is arranged in the feed hopper 4, and a coal grinding assembly 7 is arranged in the casing 2.
[0022] As Figure 3 shown, the coal grinding assembly 7 includes a grinding disc 701, grinding rollers 702 and a tripod 703. The grinding disc 701 is rotatably connected to the top of the base 1, and the bottom of the grinding disc 701 is fixedly connected to the output shaft of the first motor 3. The tripod 703 is slidably connected to the middle part inside the casing 2. The feed pipe 5 slidably penetrates through the middle part of the tripod 703. Three grinding rollers 702 are rotatably connected to the bottom of the tripod 703, and the grinding rollers 702 are all in contact with the grinding disc 701. When the grinding disc 701 rotates relative to the grinding rollers 702, the coal material between them will be ground.
[0023] As Figure 3 shown, the coal grinding assembly 7 further includes an elastic member 704 and a guide rod 705. Guide rods 705 are fixedly connected to the bottoms of the three corners of the tripod 703, and elastic members 704 are sleeved on the guide rods 705. One end of the elastic member 704 is connected to the tripod 703, and the other end of the elastic member 704 is connected to the casing 2. When the tripod 703 moves upward, the elastic member 704 will be stretched.
[0024] As Figure 4 and Figure 5 shown, the cleaning assembly 8 includes a second motor 801, a worm 802, a worm gear 803, a rotating rod 804 and a rotating scraping blade 805. The second motor 801 is fixedly connected to the front part on the right side of the feed hopper 4. The output shaft of the second motor 801 is fixedly connected with the worm 802, and the worm 802 is rotatably connected to the feed hopper 4. The rotating rod 804 is rotatably connected to the top inside the feed hopper 4 and extends downward into the feed pipe 5. A worm gear 803 is fixedly connected to the upper end of the rotating rod 804, and the worm gear 803 meshes with the worm 802. A rotating scraping blade 805 is fixedly connected to the rotating rod 804, and the rotating scraping blade 805 is in contact with the inner wall of the feed pipe 5. When the rotating scraping blade 805 rotates relative to the feed pipe 5, it will scrape the inner wall of the feed pipe 5 to scrape off the coal material that has adhered into blocks.
[0025] In use, coal is fed into the feed pipe 5 through the feed hopper 4. The coal moves spirally downward along the rotating scraping blade 805 and accumulates on the grinding table 701. Initially, the grinding roller 702 is in close contact with the grinding table 701, and the elastic member 704 is in a normal state. The grinding table 701 is driven by the first motor 3 to rotate relative to the grinding roller 702. Since the coal is sandwiched between the grinding roller 702 and the grinding table 701, the grinding roller 702 is pushed upward, causing the tripod 703 to move upward and stretching the elastic member 704. The guide rod 705 guides the movement of the tripod 703. Under the continuous relative movement between the grinding roller 702 and the grinding table 701, the coal powder will be ground and become finer and finer. The distance between the grinding roller 702 and the grinding table 701 gradually decreases. Due to the elastic action of the elastic member 704, the tripod 703 is driven to move downward, keeping the coal in close contact with the grinding roller 702 and the grinding table 701, which can ensure the coal grinding effect. Hot air is introduced through the air inlet 201. The ground coal powder is driven by the hot air to move upward, passes through the coal grinding assembly 7, and is discharged from the discharge pipe 6. When coal blocks adhere to the inner wall of the feed pipe 5, the worm 802 is driven to rotate by the second motor 801. The worm 802 drives the worm gear 803 and the rotating rod 804 to rotate. The rotating scraping blade 805 on the rotating rod 804 scrapes off the adhered coal on the inner wall of the feed pipe 5, thus ensuring that the inner wall of the feed pipe 5 is not blocked.
[0026] As Figure 4 shown, it further includes blades 9. A plurality of blades 9 are fixedly connected to the inner bottom surface of the feed hopper 4. The blades 9 can preliminarily cut the coal before it enters the feed pipe 5, making it easier to grind.
[0027] As Figure 4 shown, it further includes a protective housing 10. The protective housing 10 is fixedly connected to the front side of the upper part inside the feed hopper 4. The protective housing 10 can prevent coal from entering the meshing part of the worm 802 and the worm gear 803, thereby extending its service life.
[0028] It should be understood that the above description is only for exemplary purposes and does not mean to limit the present invention. Those skilled in the art will understand that the variant forms of the present invention will be included within the scope of the claims herein.
Claims
1. A coal mill with an anti-sticking structure, characterized in that: It includes a base (1), a casing (2), a first motor (3), a feed hopper (4), a feed pipe (5), a discharge pipe (6), a coal grinding assembly (7) and a cleaning assembly (8). The top surface of the base (1) is fixedly connected to the casing (2). An air inlet (201) is opened on the left side of the lower part of the casing (2). The first motor (3) is installed at the inner top of the base (1). The feed hopper (4) is fixedly connected to the rear side of the top of the casing (2). The feed pipe (5) is connected through the center of the top of the casing (2). The feed pipe (5) is communicated with the feed hopper (4). The discharge pipe (6) is connected through the front side of the top of the casing (2). A cleaning assembly (8) is arranged in the feed hopper (4). The cleaning assembly (8) is used for cleaning the coal material that adheres and forms blocks. A coal grinding assembly (7) for grinding coal is arranged in the casing (2).
2. The coal mill with an anti-sticking structure according to claim 1 is characterized in that: The coal grinding assembly (7) includes a grinding disc (701), grinding rollers (702) and a tripod (703). The grinding disc (701) is rotatably connected to the top of the base (1). The bottom of the grinding disc (701) is fixedly connected to the output shaft of the first motor (3). The tripod (703) is slidably connected to the middle part inside the casing (2). The feed pipe (5) slidably penetrates through the middle part of the tripod (703). Three grinding rollers (702) are rotatably connected to the bottom of the tripod (703). The grinding rollers (702) are all in contact with the grinding disc (701).
3. The coal mill with an anti-sticking structure according to claim 2, characterized in that: The coal grinding assembly (7) further includes elastic members (704) and guide rods (705). Guide rods (705) are fixedly connected to the bottoms of the three corners of the tripod (703). Elastic members (704) are sleeved on the guide rods (705). One end of the elastic member (704) is connected to the tripod (703), and the other end of the elastic member (704) is connected to the casing (2).
4. A coal mill with an anti-sticking structure according to claim 3, characterized in that: The cleaning assembly (8) includes a second motor (801), a worm (802), a worm gear (803), a rotating rod (804) and a rotating scraping blade (805). The second motor (801) is fixedly connected to the front part on the right side of the feed hopper (4). The output shaft of the second motor (801) is fixedly connected to the worm (802). The worm (802) is rotatably connected to the feed hopper (4). The rotating rod (804) is rotatably connected to the inner top of the feed hopper (4). The rotating rod (804) extends downward into the feed pipe (5). A worm gear (803) is fixedly connected to the upper end of the rotating rod (804). The worm gear (803) meshes with the worm (802). A rotating scraping blade (805) is fixedly connected to the rotating rod (804). The rotating scraping blade (805) is in contact with the inner wall of the feed pipe (5). The rotating scraping blade (805) is used for scraping the coal material that adheres and forms blocks on the inner wall of the feed pipe (5).
5. The coal mill with an anti-sticking structure according to claim 4, characterized in that: It further includes blades (9). A plurality of blades (9) are fixedly connected to the inner bottom surface of the feed hopper (4). The blades (9) are used for preliminarily cutting the coal material.
6. The coal mill with an anti-sticking structure according to claim 5, characterized in that: It further includes a protective shell (10). The protective shell (10) is fixedly connected to the front side of the upper part inside the feed hopper (4). The protective shell (10) is used for protecting the components.