Bentonite pulverizer air duct guard plate structure

Abstract

The utility model discloses an air duct guard plate structure of a bentonite flour mill, which belongs to the technical field of bentonite flour mills and comprises an air duct, a replacement groove is arranged in the middle of the top surface of the air duct, a material grinding barrel is arranged in the middle of an inner cavity of the air duct, a plurality of air blowing ports are arranged on the side surface of the material grinding barrel, and a cover barrel is mounted at the top of the material grinding barrel. According to the bentonite grinding machine, the annular rubber cylinder is arranged in the inner cavity of the air cylinder in the sleeved mode, air is guided into the inner cavity of the grinding cylinder from the blower nozzle, the annular rubber cylinder, the air inlet and the blowing nozzle to blow and separate ground bentonite, and the annular rubber cylinder is used for preventing the inner wall of the air cylinder from being affected by impurities in wind power to be abraded; and the fixing between the cover cap and the air duct can be removed by detaching the butterfly screws, so that the cover cap is lifted upwards, the annular rubber barrel in the inner cavity of the air duct is replaced, the inner wall of the air duct is effectively prevented from being abraded, and the air duct has good practicability.

Description

Technical Field

[0001] This utility model relates to the technical field of bentonite grinding mills, and more specifically, to a structure for a duct guard plate of a bentonite grinding mill. Background Technology

[0002] Bentonite, also known as bentonite, soapstone, or bentonite rock, is a non-metallic mineral with montmorillonite as its main mineral component. After mining, bentonite is processed using a grinding mill, with the Raymond mill being a commonly used grinding equipment. During the grinding process, air is blown into the mill through a duct to screen the ground powder.

[0003] A search revealed that utility model patent CN220835888U discloses a duct liner structure for a bentonite grinding mill. The duct liner body is designed in a streamlined shape according to the airflow direction within the duct, facilitating air delivery. A countersunk hole is provided on one side of the duct liner body, with countersunk bolts inside. This reduces the impact and wear on the bolt heads caused by materials within the duct and facilitates installation and disassembly. The duct liner body is made of high-chromium cast iron, a wear-resistant steel material, increasing the equipment's service life. A high-temperature resistant layer is provided on one side of the duct liner body inside the duct, and a wear-resistant coating is provided on the outside of this layer. The high-temperature resistant layer prevents the heat from the powder itself after grinding from affecting the duct liner body, preventing rapid aging and extending the equipment's service life. The wear-resistant coating increases the wear resistance of the duct liner body surface, further extending the equipment's service life. However, the aforementioned patents still have the following shortcomings: the high-temperature resistant layer and wear-resistant coating will still wear down with continuous operation of the equipment, and the air duct guard plate is fixed to the base plate, making it inconvenient to replace, thus the service life of the equipment needs to be improved. Therefore, we propose a new air duct guard plate structure for a bentonite grinding mill. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide a structure for the air duct guard plate of a bentonite grinding mill.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] A bentonite grinding mill air duct guard plate structure includes an air duct, a replacement groove provided in the middle of the top surface of the air duct, an abrasive cylinder provided in the middle of the inner cavity of the air duct, multiple air outlets provided on the side of the abrasive cylinder, a cover cylinder installed on the top of the abrasive cylinder, an air inlet fixedly connected to the side of the air duct, an annular rubber cylinder sleeved in the inner cavity of the air duct, the air inlet and air inlet of the annular rubber cylinder being concentrically arranged, multiple air inlets opened on the inner side of the annular rubber cylinder, the positions of the air inlets and air outlets being aligned, a cover installed on the top of the air duct, a perforation provided on the top of the cover, a sealing block fixedly connected to the bottom surface of the cover, the bottom end of the sealing block extending through the replacement groove into the inner cavity of the air duct and fitting against the top surface of the annular rubber cylinder.

[0007] As a preferred embodiment of this utility model, the outer side of the air duct is provided with a plurality of first screw holes, the side of the cover is provided with a plurality of mounting holes, the outer side of the cover is sleeved on the outer side of the air duct, and the inner cavity of each mounting hole is fitted with a wing screw, the end of the wing screw being threaded into the inner cavity of the first screw hole.

[0008] As a preferred embodiment of this utility model, the top surface of the abrasive cylinder is provided with a plurality of second screw holes, the bottom end of the cover is fixedly connected with an installation ring, a plurality of hexagonal screws are sleeved on the installation ring, and the bottom ends of the plurality of hexagonal screws are respectively threaded into the inner cavity of the second screw holes, and the side of the installation ring is in contact with the inner wall of the through hole.

[0009] As a preferred embodiment of this utility model, a grinding ring is fixedly sleeved on the inner wall of the abrasive cylinder.

[0010] In a preferred embodiment of this utility model, the inner wall of the air duct and the outer side of the annular rubber cylinder are fitted together, the inner side of the annular rubber cylinder and the outer side of the abrasive cylinder are fitted together, and the inlet end of the annular rubber cylinder is provided with a guide bevel.

[0011] In a preferred embodiment of this utility model, the inner side of the cover is fitted to the outer side of the air duct, and the side of the sealing block is fitted to the inner wall of the air duct.

[0012] Compared with existing technologies, the advantages of this utility model are:

[0013] In this invention, an annular rubber sleeve is fitted inside the air duct, allowing gas to be introduced from the blower, the annular rubber sleeve, the air inlet, and the air outlet into the inner cavity of the abrasive cylinder to blow and separate the ground bentonite. The annular rubber sleeve prevents the inner wall of the air duct from being worn by impurities in the airflow. Furthermore, by removing the wing screws, the fixing between the cover and the air duct can be released, allowing the cover to be lifted upwards to replace the annular rubber sleeve inside the air duct, effectively preventing wear on the inner wall of the air duct. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is an exploded view of the overall structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the ventilation duct of this utility model;

[0017] Figure 4 This is a cross-sectional schematic diagram of the annular rubber cylinder of this utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the cover of this utility model.

[0019] Explanation of the labels in the diagram:

[0020] 1. Air duct; 2. Replacement slot; 3. Abrasive cylinder; 4. Air outlet; 5. Blower; 6. Annular rubber cylinder; 7. Air inlet; 8. Cover; 9. Sealing block; 10. Through hole; 11. Mounting hole; 12. First screw hole; 13. Wing screw; 14. Second screw hole; 15. Cover; 16. Mounting ring; 17. Hexagonal screw; 18. Grinding ring; 19. Air guide bevel. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Example 1:

[0025] Please see Figure 1-5 A bentonite grinding mill air duct guard plate structure includes an air duct 1, a replacement groove 2 is provided in the middle of the top surface of the air duct 1, an abrasive cylinder 3 is provided in the middle of the inner cavity of the air duct 1, multiple air outlets 4 are provided on the side of the abrasive cylinder 3, a cover 15 is installed on the top of the abrasive cylinder 3, an air inlet 5 is fixedly connected to the side of the air duct 1, an annular rubber cylinder 6 is sleeved in the inner cavity of the air duct 1, the air inlet of the annular rubber cylinder 6 and the air outlet 5 are arranged concentrically, multiple air inlets 7 are opened on the inner side of the annular rubber cylinder 6, the positions of the air inlets 7 and the air outlets 4 are aligned, a cover 8 is installed on the top of the air duct 1, a perforation 10 is provided on the top of the cover 8, a sealing block 9 is fixedly connected to the bottom surface of the cover 8, the bottom end of the sealing block 9 extends through the replacement groove 2 into the inner cavity of the air duct 1 and fits against the top surface of the annular rubber cylinder 6.

[0026] In this embodiment, the inner cavity of the air duct 1 is the air channel, so as to supply air to the inner side of the abrasive cylinder 3.

[0027] For details, please refer to Figures 1 to 5 Multiple first screw holes 12 are provided on the outer side of the air duct 1, and multiple mounting holes 11 are provided on the side of the cover 8. The outer side of the cover 8 is fitted onto the outer side of the air duct 1. A wing screw 13 is fitted into the inner cavity of each mounting hole 11, and the end of the wing screw 13 is threaded into the inner cavity of the first screw hole 12.

[0028] In this embodiment, the cover 8 is installed on the air duct 1 by the cooperation of the first screw hole 12, the mounting hole 11 and the wing screw 13.

[0029] For details, please refer to Figures 1 to 3 The top surface of the abrasive cylinder 3 is provided with multiple second screw holes 14. The bottom end of the cover cylinder 15 is fixedly connected to the mounting ring 16. Multiple hexagonal screws 17 are fitted on the mounting ring 16. The bottom ends of the multiple hexagonal screws 17 are respectively threaded into the inner cavity of the second screw hole 14. The side of the mounting ring 16 is in contact with the inner wall of the through hole 10.

[0030] In this embodiment, the cover 15 is installed on the top of the abrasive cylinder 3 by the cooperation of the second screw hole 14 and the hexagonal screw 17.

[0031] For details, please refer to Figure 3 The inner wall of the abrasive cylinder 3 is fixedly fitted with a grinding ring 18.

[0032] In this embodiment, bentonite is ground by the cooperation of grinding ring 18 and grinding roller on Raymond mill.

[0033] For details, please refer to Figures 2 to 4 The inner wall of the air duct 1 is in contact with the outer side of the annular rubber cylinder 6, the inner side of the annular rubber cylinder 6 is in contact with the outer side of the abrasive cylinder 3, and the inlet end of the annular rubber cylinder 6 is provided with a guide bevel 19.

[0034] In this embodiment, the sealing of the annular rubber cylinder 6 within the cavity of the air duct 1 is ensured, the gas introduced by the air inlet 5 is smoothly introduced into the cavity of the annular rubber cylinder 6, and the air guide bevel 19 is used to ensure the smooth flow of gas from the air inlet 5 into the cavity of the annular rubber cylinder 6.

[0035] For details, please refer to Figure 1 , Figure 2 and Figure 5 The inner side of the cover 8 fits against the outer side of the air duct 1, and the side of the sealing block 9 fits against the inner wall of the air duct 1.

[0036] In this embodiment, the stability of the cover 8 installed on the air duct 1 is ensured, while the sealing of the replacement groove 2 is ensured by the fit between the side of the sealing block 9 and the inner wall of the air duct 1.

[0037] Working principle: During use, the grinding roller and grinding ring 18 work together to grind the bentonite. A blower blows external air in through the air inlet 5, causing the air inside the air inlet 5 to enter the annular rubber cylinder 6. The air flows within the annular rubber cylinder 6 and is guided to the inside of the grinding cylinder 3 through the air inlet 7 on the annular rubber cylinder 6 and the air outlet 4 on the grinding cylinder 3. This air agitates the bentonite inside the grinding cylinder 3, pushing the properly ground bentonite upwards. The movement allows qualified bentonite to be discharged. Additionally, when the annular rubber cylinder 6 wears down, the wing screw 13 is removed from the first screw hole 12 and the mounting hole 11 to release the cover 8, allowing the cover 8 to be lifted upwards. This allows the annular rubber cylinder 6 inside the air duct 1 to be removed, and a new annular rubber cylinder 6 to be inserted into the air duct 1. The cover 8 is then reinstalled on the air duct 1 to replace the annular rubber cylinder 6, preventing wear on the air duct within the air duct 1.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A duct liner structure for a bentonite grinding mill, characterized in that: The device includes a duct (1), a replacement groove (2) is provided in the middle of the top surface of the duct (1), an abrasive cylinder (3) is provided in the middle of the inner cavity of the duct (1), a plurality of air outlets (4) are provided on the side of the abrasive cylinder (3), a cover (15) is installed on the top of the abrasive cylinder (3), a blower (5) is fixedly connected to the side of the duct (1), and an annular rubber cylinder (6) is sleeved in the inner cavity of the duct (1). The air inlet and the blower (5) of the annular rubber cylinder (6) are concentric. The inner side of the annular rubber cylinder (6) is provided with multiple air inlets (7), the positions of the air inlets (7) and the air outlets (4) are aligned. The top of the air duct (1) is equipped with a cover (8), the top of the cover (8) is provided with a perforation (10), and the bottom surface of the cover (8) is fixedly connected with a sealing block (9). The bottom end of the sealing block (9) extends through the replacement groove (2) to the inner cavity of the air duct (1) and is in contact with the top surface of the annular rubber cylinder (6).

2. The structure of the air duct guard plate for a bentonite grinding mill according to claim 1, characterized in that: The outer side of the air duct (1) is provided with a plurality of first screw holes (12), and the side of the cover (8) is provided with a plurality of mounting holes (11). The outer side of the cover (8) is fitted onto the outer side of the air duct (1). The inner cavity of each mounting hole (11) is fitted with a wing screw (13), and the end of the wing screw (13) is threaded into the inner cavity of the first screw hole (12).

3. The structure of the air duct guard plate for a bentonite grinding mill according to claim 1, characterized in that: The top surface of the abrasive cylinder (3) is provided with a plurality of second screw holes (14). The bottom end of the cover cylinder (15) is fixedly connected to an installation ring (16). A plurality of hexagonal screws (17) are fitted on the installation ring (16). The bottom ends of the plurality of hexagonal screws (17) are respectively threaded into the inner cavity of the second screw hole (14). The side of the installation ring (16) and the inner wall of the through hole (10) are in contact.

4. The structure of the air duct guard plate for a bentonite grinding mill according to claim 1, characterized in that: The inner wall of the abrasive cylinder (3) is fixedly fitted with a grinding ring (18).

5. The structure of the air duct guard plate for a bentonite grinding mill according to claim 1, characterized in that: The inner wall of the air duct (1) is in contact with the outer side of the annular rubber cylinder (6), the inner side of the annular rubber cylinder (6) is in contact with the outer side of the abrasive cylinder (3), and the inlet end of the annular rubber cylinder (6) is provided with a guide bevel (19).

6. The structure of the air duct guard plate for a bentonite grinding mill according to claim 1, characterized in that: The inner side of the cover (8) is in contact with the outer side of the air duct (1), and the side of the sealing block (9) is in contact with the inner wall of the air duct (1).

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