Pneumatic feed vertical mill

Abstract

The utility model provides a kind of pneumatic feeding vertical mill, specifically related to grinding equipment technical field, including machine body, and the material cylinder being set to the top of machine body, the top of material cylinder is equipped with placing groove, placing groove is equipped with storage hopper, the bottom end middle part of storage hopper is equipped with feeding pipe, the bottom of feeding pipe passes through the top of machine body, and it is located in machine body, the top of material cylinder is equipped with connecting frame, the top end middle part of connecting frame is equipped with cylinder, the output end of cylinder passes through connecting frame, and is connected with quantitative injection part, quantitative injection part includes the rod body being connected with the output end of cylinder, and the conical plate being set to the outer surface of rod body and being matched with feeding pipe, and the cover plate being set to the bottom of rod body and being used for sealing the bottom end of rod body;The setting of storage hopper can temporarily store raw materials of external feeding equipment feeding, and the setting of cylinder and quantitative injection part can quantitatively inject raw materials in storage hopper to the inside of machine body.

Description

Technical Field

[0001] This utility model relates to the field of grinding equipment technology, and in particular to a pneumatically fed vertical mill. Background Technology

[0002] Vertical roller mills are ideal large-scale grinding equipment, widely used in industries such as cement, power, metallurgy, chemical, and non-metallic minerals. They integrate crushing, drying, grinding, and classification conveying, offering high production efficiency. They can grind lumpy, granular, and powdery raw materials into the required powdered materials. The crushed material overflows from the edge of the grinding disc, while the powdery material is carried away by a high-speed airflow rising from the bottom of the machine. As the airflow and powdery material pass through the classifier at the top of the mill, the rapidly rotating rotor separates the coarse powder, which falls back to the center of the grinding disc for regrinding. The fine powder exits the mill with the airflow and is collected in a dust collection device, becoming the finished product. Particles not carried away by the airflow overflow the grinding disc and return to the mill's feed inlet via an external circulation bucket elevator, where they re-enter the mill with newly fed raw materials for regrinding.

[0003] However, the existing feeding structures used in vertical mills are belt conveyors or bucket elevators. However, these two feeding methods cannot control the amount of raw material fed. As a result, after the raw material is injected into the vertical mill, it will accumulate in the middle of the machine, which will put a load on the grinding and screening work of the vertical mill and reduce the grinding efficiency of the raw material itself. In addition, the existing raw material usually accumulates in the middle of the machine after injection, which wastes a lot of time in terms of raw material diffusion. Utility Model Content

[0004] To address the aforementioned problems, this invention proposes a pneumatically fed vertical mill to more accurately resolve these issues.

[0005] This utility model is achieved through the following technical solution:

[0006] This utility model proposes a pneumatically fed vertical mill, including a machine body and a material cylinder disposed on the top of the machine body. A placement groove is provided on the top of the material cylinder, and a storage hopper is disposed within the placement groove. A feed pipe is disposed at the bottom center of the storage hopper, and the bottom of the feed pipe passes through the top of the machine body and is located within the machine body. A connecting frame is provided on the top of the material cylinder, and a cylinder is disposed at the top center of the connecting frame. The output end of the cylinder passes through the connecting frame and is connected to a metering injection device. The metering injection device includes a rod body connected to the output end of the cylinder, a conical plate disposed on the outer surface of the rod body and cooperating with the feed pipe, and a cover plate disposed at the bottom of the rod body for sealing the bottom end of the rod body. A gas injection channel is provided within the rod body, and an air pump is located on one side of the material cylinder. The output end of the air pump is connected to the gas injection channel. Several air holes communicating with the gas injection channel are provided on the lower end face of the rod body.

[0007] Furthermore, the present invention includes a grinding chamber inside the machine body, a grinding plate at the bottom of the grinding chamber, and an electric motor at the bottom of the machine body. The output end of the electric motor passes through the bottom of the machine body and is connected to the grinding plate.

[0008] Furthermore, the lower end face of the body is provided with an air duct, which is connected to an external wind-powered component.

[0009] Furthermore, in this invention, a screening screen is provided at the bottom of the placement trough, and an output pipe connected to the material cylinder is provided on one side of the material cylinder.

[0010] Furthermore, the present invention provides mounting plates on both sides of the machine body, and grinding parts are provided on the mounting plates.

[0011] Furthermore, the bottom of the machine body is provided with a foot bracket.

[0012] The beneficial effects of this utility model are:

[0013] The storage hopper is used to temporarily store raw materials conveyed by external feeding equipment. Its capacity and structural design are matched with the conveying capacity of the external feeding equipment to ensure a stable supply and safe temporary storage of raw materials. By controlling the movement of the cylinder, the metering injection component is driven to move up and down precisely, thereby accurately injecting the raw materials in the storage hopper into the machine body according to the set dosage. This effectively improves the accuracy and stability of raw material injection and ensures the efficient operation of the vertical mill grinding process. The feed pipe can store the raw materials to be injected, while the cover plate can seal the bottom of the feed pipe to ensure that the feed pipe can effectively block the storage of raw materials. At the same time, after the raw materials are injected into the pipe, powder can be prevented from moving into the feed pipe. The conical plate can limit the amount of raw material falling and scrape the raw materials adhering to the inner wall of the feed pipe, which can effectively prevent the waste of raw materials.

[0014] The installation of air pumps, gas injection pipes, and air vents can provide a driving force to the raw materials during the injection process, allowing the raw materials injected into the grinding chamber to diffuse directly within the grinding chamber, effectively preventing the accumulation of raw materials. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic cross-sectional view of the material cylinder and metering injection component in this utility model;

[0017] Figure 3 This is a schematic diagram of the overall bottom view structure of this utility model.

[0018] In the diagram, 1. Machine body; 11. Motor; 12. Mounting plate; 13. Grinding parts; 14. Legs; 2. Material cylinder; 21. Placement trough; 22. Storage hopper; 23. Feed pipe; 24. Connecting frame; 25. Cylinder; 26. Screening screen; 27. Output pipe; 3. Quantitative injection component; 31. Rod; 32. Conical plate; 33. Cover plate; 34. Gas injection channel; 35. Air pump; 36. Air hole; 4. Air duct. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of this utility model. Obviously, the described embodiments are some, but not all, of the embodiments of this utility model. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. Example

[0020] refer to Figure 1-3 A pneumatically fed vertical mill includes a body 1 and a material cylinder 2 disposed on the top of the body 1. A placement groove 21 is provided on the top of the material cylinder 2, and a storage hopper 22 is disposed within the placement groove 21. A feed pipe 23 is disposed at the center of the bottom end of the storage hopper 22. The bottom of the feed pipe 23 passes through the top of the body 1 and is located inside the body 1. A connecting frame 24 is disposed on the top of the material cylinder 2, and a cylinder 25 is disposed at the center of the top of the connecting frame 24. The output end of the cylinder 25 passes through the connecting frame 24 and is connected to a metering injection device 3. The metering injection component 3 includes a rod 31 connected to the output end of the cylinder 25, a conical plate 32 disposed on the outer surface of the rod 31 and cooperating with the feed pipe 23, and a cover plate 33 disposed at the bottom of the rod 31 and used to seal the bottom end of the rod 31. A gas injection channel 34 is opened inside the rod 31. An air pump 35 is located on one side of the material cylinder 2. The output end of the air pump 35 is connected to the gas injection channel 34. A number of air holes 36 communicating with the gas injection channel 34 are opened on the lower end face of the rod 31.

[0021] The storage hopper 22 is designed to temporarily store raw materials fed from external feeding equipment. The cylinder 25 and the metering injection device 3 can meterly inject the raw materials in the storage hopper 22 into the machine body 1. The feed pipe 23 is designed to store the raw materials to be injected, and the cover plate 33 is designed to seal the bottom of the feed pipe 23, ensuring that the feed pipe 23 effectively blocks the storage of raw materials. At the same time, after the raw materials are injected into the pipe, powder can be prevented from moving into the feed pipe 23. The conical plate can block the raw materials in the storage hopper after moving into the feed pipe, thereby accurately limiting the flow rate of raw materials during the falling process. At the same time, during its up and down movement, it effectively scrapes the raw material residue attached to the inner wall of the feed pipe, reducing raw material waste, improving raw material utilization, and ensuring the uniformity and continuity of the feed of the vertical mill.

[0022] The coordinated operation of the air pump, gas injection channel, and air holes provides a stable driving force for the raw material during the injection process, enabling the raw material to quickly diffuse to all areas of the grinding chamber at the moment of injection. This effectively avoids the accumulation of raw material in the middle of the grinding chamber, significantly improves the grinding efficiency and quality of the raw material, and enhances the overall performance of the vertical mill.

[0023] In this embodiment, the conical plate is arranged in an inverted conical shape;

[0024] In this embodiment, a grinding chamber is provided inside the machine body 1, a grinding plate is provided at the bottom of the grinding chamber, and a motor 11 is provided at the bottom of the machine body 1. The output end of the motor 11 passes through the bottom of the machine body 1 and is connected to the grinding plate.

[0025] The grinding chamber is designed to store raw materials, while the motor 11 drives the grinding plate to rotate, allowing the raw materials on the grinding plate to spread to the surrounding area, thus ensuring the grinding process.

[0026] like Figure 1 As shown, an air duct 4 is provided on the lower end face of the body 1, and the air duct 4 is connected to an external wind-powered component;

[0027] like Figure 2 As shown, a screen 26 is provided at the bottom of the inside of the placement trough 21, and an output pipe 27 connected to the material cylinder 2 is provided on one side of the material cylinder 2.

[0028] In this embodiment, the screening mesh 26 can be 100 mesh, 120 mesh or 200 mesh.

[0029] The screen frame can be used to screen the ground raw materials, and the screened raw materials will be output to the outside through the output pipe 27.

[0030] like Figure 1 As shown, mounting plates 12 are provided on both sides of the machine body 1, and grinding parts 13 are provided on the mounting plates 12;

[0031] The grinding element 13 is provided to grind the raw material located on the grinding plate, thereby ensuring the grinding of the raw material.

[0032] In this embodiment, a foot bracket 14 is provided at the bottom of the body 1.

[0033] Working principle:

[0034] First, the staff uses external feeding equipment, such as a bucket elevator, to transport the raw materials into the storage hopper 22 for temporary storage. When feeding is required, the cylinder 25 drives the metering injection device 3 downwards. Simultaneously, the cover plate 33 detaches from the bottom of the feed pipe 23, and the raw materials inside the storage hopper 22 fall into the grinding chamber through the feed pipe 23. As the rod 31 moves downwards, the conical plate 32 gradually contacts the inner wall of the feed hopper, preventing the raw materials from falling. Simultaneously, the conical plate 32 scrapes the raw materials adhering to the inner wall of the feed pipe 23 during its downward movement. After the raw material injection is complete, the cylinder 25 drives the metering injection device 3... The machine is reset and the cover plate 33 is used to seal the bottom of the feed pipe 23. After the raw material falls into the machine body 1, the motor 11 drives the grinding plate to rotate and moves the raw material on the grinding plate. The grinding element 13 grinds the raw material on the grinding plate. During the grinding process, the wind element injects air into the machine body 1 through the air duct 4 and blows the ground raw material powder upward. The upward-blown raw material is screened at the screen 26. The qualified raw material powder enters the placement tank 21 and is output to the outside through the output pipe 27. The unqualified raw material continues to fall into the grinding chamber and is ground repeatedly.

[0035] It should be noted that the air duct, grinding parts, grinding plates and motor structure in this application are all existing structures, and these structures are not the focus of protection in this application. Therefore, their specific structures are not described in detail in this document. At the same time, this utility model only protects the mechanical parts, and the functions implemented by the software control part are not within the scope of protection of this utility model.

[0036] Of course, there may be other implementations of this utility model. Based on this implementation, other implementations obtained by those skilled in the art without any creative effort are all within the scope of protection of this utility model.

Claims

1. A pneumatically fed vertical mill, characterized in that, The device includes a machine body and a material cylinder located on top of the machine body. A placement groove is formed at the top of the material cylinder, and a storage hopper is placed within the placement groove. An inlet pipe is located at the bottom center of the storage hopper, and the bottom of the inlet pipe passes through the top of the machine body and is located within the machine body. A connecting frame is provided at the top of the material cylinder, and a cylinder is located at the top center of the connecting frame. The output end of the cylinder passes through the connecting frame and is connected to a metering injection device. The metering injection device includes a rod body connected to the output end of the cylinder, a conical plate located on the outer surface of the rod body and cooperating with the inlet pipe, and a cover plate located at the bottom of the rod body for sealing the bottom end of the rod body. A gas injection channel is formed within the rod body. An air pump is located on one side of the material cylinder, and the output end of the air pump is connected to the gas injection channel. Several air holes communicating with the gas injection channel are formed on the lower end face of the rod body.

2. The pneumatically fed vertical mill according to claim 1, characterized in that, The machine body has a grinding chamber, and a grinding plate is provided at the bottom of the grinding chamber. An electric motor is provided at the bottom of the machine body, and the output end of the electric motor passes through the bottom of the machine body and is connected to the grinding plate.

3. A pneumatically fed vertical mill according to claim 1, characterized in that, The lower end face of the body is provided with an air duct, which is connected to an external wind-powered component.

4. A pneumatically fed vertical mill according to claim 1, characterized in that, A screening screen is installed at the bottom of the placement trough, and an output pipe connected to the material cylinder is provided on one side of the material cylinder.

5. A pneumatically fed vertical mill according to claim 1, characterized in that, The machine body has mounting plates on both sides, and grinding parts are provided on the mounting plates.

6. A pneumatically fed vertical mill according to claim 1, characterized in that, The bottom of the machine body is equipped with a stand.

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