A shovel device for a flour mill

Abstract

The utility model discloses a kind of shovel cutter devices for flour mill, be set in flour mill, comprising: shovel cutter frame lower seat, be set in the bottom of flour mill, move with flour mill main shaft, the shovel cutter frame lower seat is provided with guide plate;Shovel cutter assembly, be set on fixed shovel cutter frame lower seat, including shovel cutter;Air guide frame is connected with the shovel cutter frame lower seat, with multiple air guide blades.The utility model has beneficial effects, by setting guide plate to shovel cutter assembly guide material, improve the efficiency of conveying material of shovel cutter assembly, while setting multiple air guide blades, produce airflow, blow coarse particle falling from upside to grinding roller, reduce bottom material accumulation, simultaneously produced airflow also combines with the air outlet of fan of flour mill, improve powder carrying capacity, improve grinding efficiency.

Description

Technical Field

[0001] This utility model relates to the field of grinding mill technology, and more specifically to a shovel device for a grinding mill. Background Technology

[0002] The pendulum mill (also known as a suspension roller mill or Raymond mill) is a dry grinding equipment based on the "ring-roller" grinding principle, combined with airflow screening and pneumatic conveying. Its finished particle size can be adjusted within the range of 0.125-0.044mm (120-325 mesh), and it is suitable for non-flammable and non-explosive mineral materials with a Mohs hardness of less than 7 and a moisture content of less than 6%, including more than 200 kinds of materials such as kaolin, limestone, and metal oxides. It is widely used in metallurgy, chemical industry, building materials and other fields.

[0003] In existing grinding mills, a shovel is usually installed at the bottom. The shovel rotates to scoop up the material and convey it to the grinding roller. Although the shovel achieves the scooping action, some material still accumulates at the bottom of the grinding mill, affecting the grinding efficiency. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a shovel device for a grinding mill, which plays the role of guiding material. The shovel, together with the grinding roller and grinding ring, guides the material to improve the service life of the grinding mill.

[0005] Specifically, this utility model discloses a shovel device for a grinding mill, which is installed inside the grinding mill and includes:

[0006] The shovel holder lower seat is located at the bottom of the grinding mill and rotates with the main shaft of the grinding mill. A guide plate is provided on the shovel holder lower seat.

[0007] A shovel assembly, mounted on a fixed shovel holder base, includes a shovel;

[0008] The air guide frame, connected to the lower seat of the shovel frame, has multiple air guide blades.

[0009] The advantages of this utility model are that by setting a guide plate to guide the material to the shovel assembly, the material conveying efficiency of the shovel assembly is improved. At the same time, multiple guide vanes are set to generate airflow, which blows the coarse particles falling from the upper side toward the grinding roller, reducing the accumulation of material at the bottom. The generated airflow is also combined with the air outlet of the mill's fan to improve the powder carrying capacity and improve the grinding efficiency.

[0010] Furthermore, the air guide frame includes: a main body and an extension plate, the bottom of the main body is fixedly connected to the lower seat of the blade holder, the extension plate is fixedly installed around the main body, and the air guide blades are fixed to the extension plate.

[0011] The advantage of adopting the above technical solution is that the extended plate serves to fix the air guide blades, preventing them from shaking during high-speed rotation and ensuring the stability of the airflow.

[0012] Furthermore, a support plate is provided on the side of the protruding plate.

[0013] The advantage of adopting the above technical solution is that the support plate plays a supporting and fixing role. During use, the support plate provides support force to the protruding part, so that the protruding plate is fixed and the service life of the protruding plate is extended.

[0014] Furthermore, the guide plate is vertically fixed on the lower seat of the scraper holder and is provided with a guide surface, with the scraper located on the side of the guide surface.

[0015] The advantage of adopting the above technical solution is that, during the rotation of the grinding mill, the material falling on the lower seat of the shovel holder moves outward along the guide surface under the action of centrifugal force, guiding the material to the shovel position, and then the shovel sends the material to the grinding roller and grinding ring for grinding, reducing the accumulation of material on the lower seat of the shovel holder and improving processing efficiency.

[0016] Furthermore, a scraper holder is installed on the lower base of the scraper holder, the scraper is installed on the scraper holder, the scraper has a scraping surface, strip-shaped protrusions are provided on both sides of the scraping surface, and a material guide extension is provided on the top of the scraper.

[0017] The advantages of adopting the above technical solution are that the shovel continuously and evenly conveys the material to the grinding area, ensuring that the material can be effectively crushed. The strip-shaped protrusions are designed to prevent the material from slipping off the sides of the shovel surface during the shoveling process, enhancing the constraint and guiding effect on the material. The guide extension can further guide the material smoothly into the grinding gap between the grinding roller and the grinding ring when the shovel conveys the material upward, avoiding the material from scattering during the conveying process and improving the accuracy of the material entering the grinding area.

[0018] Furthermore, the grinding mill is equipped with grinding rollers, and the air guide vanes are disposed between the grinding rollers.

[0019] The advantage of adopting the above technical solution is that the air guide vanes set between the grinding rollers will not affect the normal operation of the grinding rollers. At the same time, the position of the vanes can ensure that the blown airflow flows outward, blowing the coarse particles that have not reached the fineness requirements after grinding by the grinding rollers to the gap between the grinding rollers and the grinding ring for secondary grinding, reducing the amount of coarse particles that fall directly to the bottom and accumulate.

[0020] Furthermore, the bottom of the shovel is provided with a feeding opening.

[0021] Furthermore, a mounting plate is provided at the bottom of the air guide frame, the mounting plate is connected to the lower seat of the shovel frame, and the material guide plate is arranged along the outer side of the mounting plate.

[0022] The advantage of adopting the above technical solution is that the mounting plate fixes the bottom of the air guide frame to the lower seat of the blade frame, ensuring that the entire air guide frame will not shake. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0024] Figure 1 This is an isometric schematic diagram of the overall installation structure of the shovel device for a grinding mill according to this utility model.

[0025] Figure 2 This is a cross-sectional view of the shovel device for a grinding mill installed inside the grinding mill.

[0026] Figure 3 This is a schematic diagram of the air guide frame structure of this utility model.

[0027] Figure 4 This is a schematic diagram of the lower support structure of the shovel holder of this utility model.

[0028] Figure 5 This is a schematic diagram of the shovel structure of this utility model.

[0029] The reference numerals used in the attached figures are as follows:

[0030] 1. Shovel holder lower seat; 2. Guide plate; 21. Guide surface; 3. Shovel; 31. Shovel surface; 32. Strip protrusion; 33. Guide extension; 34. Feed opening; 4. Air guide frame; 41. Main body; 42. Extension plate; 43. Mounting plate; 5. Air guide blade; 6. Support plate; 7. Grinding roller; 8. Shovel holder; 9. Grinding mill main shaft. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings.

[0032] like Figure 1-5 As shown, this utility model discloses a shovel device for a grinding mill, which is installed inside the grinding mill and includes:

[0033] The lower shovel holder 1 is located at the bottom of the grinding mill and rotates with the main shaft 9 of the grinding mill. A guide plate 2 is provided on the lower shovel holder 1.

[0034] The shovel assembly is mounted on the lower seat 1 of the fixed shovel holder and includes a shovel 3;

[0035] The air guide frame 4 is connected to the lower seat 1 of the shovel frame and has multiple air guide blades 5.

[0036] The advantages of this invention are that by setting the guide plate 2 to guide the material to the shovel assembly, the material conveying efficiency of the shovel assembly is improved. At the same time, multiple guide vanes 5 are set to generate airflow, which blows the coarse particles falling from the upper side toward the grinding roller 7, reducing the accumulation of material at the bottom. The generated airflow also combines with the air outlet of the mill's fan to improve powder carrying capacity and grinding efficiency.

[0037] In some implementations, the air guide frame 4 includes a main body 41 and an extension plate 42. The main body 41 is a cylindrical part, sleeved on the main shaft 9 of the grinding mill. As the main shaft 9 of the grinding mill rotates, an mounting plate 43 is fixedly connected to the bottom of the main body 41 and fixedly connected to the lower seat 1 of the shovel frame. The extension plate 42 is fixedly installed around the main body 41. The air guide blades 5 are fixed to the extension plate 42. The extension plate 42 is fixed to the outside of the main body 41 by welding. Multiple mounting holes are provided on the extension plate 42. The air guide blades 5 are fixed by screws. When installed in different grinding mills, air guide blades 5 of different sizes can be installed to achieve the best airflow effect. The air guide blades 5 generate airflow during rotation, blowing the coarse particles that fall after being screened by the classifier toward the grinding roller 7, so that the coarse powder is ground again until it is ground to the required fineness. Then the airflow merges with the airflow generated by the bottom fan to form a spiral wind, which improves the powder carrying capacity, improves the air conveying efficiency, and thus improves the mill output.

[0038] Furthermore, a support plate 6 is provided on the side of the extension plate 42. One side of the support plate 6 is fixed to the side of the extension plate 42, and the other side is fixed to the main body 41, which plays a good supporting and fixing role, so that the extension plate 42 with the air guide blades 5 is not easily damaged or shaken during rotation, thus extending the service life of the extension plate 42.

[0039] In some implementations, the guide plate 2 is vertically fixed on the lower seat of the scraper holder 1 and is evenly distributed around the perimeter of the mounting plate 43. A guide surface 21 is provided, and the scraper 3 is located on the side of the guide surface 21. The guide surface 21 is flat. During the rotation of the mill, the material will fall onto the lower seat of the scraper holder 1. The accumulation of material on the lower seat of the scraper holder 1 will not only affect the working efficiency of the scraper 3 but also affect the rotation of the main shaft, thereby affecting the working efficiency of the mill. Therefore, the guide plate 2 is provided. During the rotation of the mill, the material falling onto the lower seat of the scraper holder 1 will move outward along the guide surface 21 under the action of centrifugal force, guiding the material to the position of the scraper 3. The scraper 3 will then send the material to the grinding roller 7 and grinding ring for grinding, reducing the accumulation of material on the lower seat of the scraper holder 1 and improving the processing efficiency.

[0040] Furthermore, a scraper holder 8 is installed on the scraper holder base 1. The scraper holder 8 is locked and fixed on the scraper holder base 1. The scraper 3 is installed on the scraper holder 8 by screws. The scraper 3 has a scraping surface 31. Strip-shaped protrusions 32 are provided on both sides of the scraping surface 31. A guide protrusion 33 is provided on the top of the scraper 3. The guide protrusion 33 faces the gap between the grinding roller 7 and the grinding ring of the grinding mill. The scraper 3 is inclined as a whole, and an outwardly expanding feed opening 34 is provided on the lower side.

[0041] The scraper 3 continuously and evenly conveys the material to the grinding area, ensuring that the material can be effectively crushed. The strip-shaped protrusions 32 are designed to prevent the material from slipping off both sides of the scraper surface 31 during the scraping process, enhancing the constraint and guiding effect on the material. The guide extension 33 can further guide the material smoothly to the grinding gap between the grinding roller 7 and the grinding ring when the scraper 3 conveys the material upward, avoiding the material from scattering during the conveying process and improving the accuracy of the material entering the grinding area.

[0042] Furthermore, the grinding mill is equipped with grinding rollers 7, and guide vanes 5 are arranged between the grinding rollers 7, with the same number as the grinding rollers 7, and do not contact the grinding rollers 7.

[0043] This application, by setting up a guide plate 2 and an air guide frame 4, allows materials to enter the grinding area of ​​the mill more quickly, improving the efficiency of the mill. Simultaneously, it generates spiral air, enhancing powder carrying capacity and improving pneumatic conveying efficiency, thereby increasing the mill's output.

[0044] For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A shovel device for a grinding mill, disposed inside the grinding mill, characterized in that, include: The shovel holder lower seat (1) is set at the bottom of the grinding mill and rotates with the main shaft (9) of the grinding mill. A guide plate (2) is set on the shovel holder lower seat (1). The shovel assembly is mounted on the fixed shovel holder base (1) and includes a shovel (3). The air guide frame (4) is connected to the lower seat of the blade frame (1) and has multiple air guide blades (5).

2. The shovel device for a grinding mill according to claim 1, characterized in that, The air guide frame (4) includes a main body (41) and an extension plate (42). The bottom of the main body (41) is fixedly connected to the lower seat (1) of the shovel frame. The extension plate (42) is fixedly installed around the main body (41). The air guide blade (5) is fixed to the extension plate (42).

3. The shovel device for a grinding mill according to claim 2, characterized in that, A support plate (6) is provided on the side of the protruding plate (42).

4. The shovel device for a grinding mill according to claim 1, characterized in that, The guide plate (2) is vertically fixed on the lower seat (1) of the shovel holder and is provided with a guide surface (21). The shovel (3) is located on the side of the guide surface (21).

5. The shovel device for a grinding mill according to claim 1, characterized in that, The shovel holder base (1) is equipped with a shovel holder (8), the shovel (3) is mounted on the shovel holder (8), the shovel (3) has a shovel surface (31), the two sides of the shovel surface (31) are provided with strip-shaped protrusions (32), and the top of the shovel (3) is provided with a guide protrusion (33).

6. The shovel device for a grinding mill according to claim 1, characterized in that, The grinding mill is equipped with grinding rollers (7), and the air guide blades (5) are disposed between the grinding rollers (7).

7. The shovel device for a grinding mill according to claim 5, characterized in that, The bottom of the shovel (3) is provided with a feed opening (34).

8. The shovel device for a grinding mill according to claim 2, characterized in that, The bottom of the air guide frame (4) is provided with an installation plate (43), the installation plate (43) is connected to the lower seat (1) of the shovel frame, and the material guide plate (2) is provided along the outside of the installation plate (43).

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