Grinding machine air ring adjusting device

Abstract

The utility model relates to the technical field of mineral grinding, and discloses a grinding machine air ring adjusting device which comprises an air ring and a grinding disc which are arranged in a grinding machine shell, the air ring is coaxially arranged on the inner wall of the grinding machine shell, the grinding disc is located in the air ring and rotates around the axis of the grinding disc, the grinding disc and the air ring are coaxially arranged, and a ventilation gap is formed between the air ring and the grinding disc. A baffle mechanism used for adjusting the size of the ventilation gap is arranged on the side, facing the grinding disc, of the air ring and comprises a plurality of telescopic baffles distributed in the circumferential direction of the air ring, and every two adjacent telescopic baffles are arranged in an attached mode. The device has the effect of prolonging the service life of the device.

Description

Technical Field

[0001] The present application relates to the technical field of mineral grinding, and in particular to a grinding machine air ring adjustment device. Background Art

[0002] Vertical grinding mill is an ideal equipment for grinding industry that integrates crushing, drying, grinding, grading and conveying. It is used to grind block, granular and powdered raw materials into required powdered materials. There are many kinds of ores, including river pebbles, bluestone, limestone, etc. These rocks are widely used in building materials, chemical industry, metallurgy, ceramics, refractory materials and other industries due to their different characteristics and different chemical functions. When mineral powder is needed, a vertical grinding mill is needed to grind the ore into powder.

[0003] The air ring in the grinding mill plays an important role in material separation, cooling and efficiency improvement. In the production process of powder, the material is crushed and pulverized by multiple grinding rollers on the grinding disc. Under the continuous drive of centrifugal force, the material moves continuously to the outer edge of the grinding disc. When the material leaves the grinding disc, it encounters the hot gas entering the mill through the air ring and rises with it. It enters the separator through the middle shell of the mill. In this process, the material and the hot gas have sufficient heat exchange, and the water is quickly evaporated. The powder concentrator controls the particle size of the finished product at the outlet of the roller mill. Particles larger than the specified size are separated and fall back to the grinding disc. Materials that meet the fineness requirements enter the dust collector through the powder concentrator, and the collected finished products are sent to the finished product warehouse.

[0004] A Chinese patent with announcement number CN218502186U discloses a mineral grinding device, including a mill cylinder and a mill support connected thereto, a material inlet is arranged on the side wall of the mill cylinder, a material outlet is arranged on the top, a grinding disc and a grinding roller are arranged inside the mill cylinder, a rotary air lock valve is arranged at the material inlet, the grinding disc is arranged at the bottom of the mill cylinder, the outer periphery of the grinding disc contacts the inner wall of the mill cylinder through an air ring, the grinding disc is connected to a power device so as to rotate, an air inlet is arranged below the air ring, the roller surface of the grinding roller is in close contact with the grinding surface of the grinding disc and the grinding disc drives the grinding roller to rotate, the fine minerals can be quickly ground, the operation is simple, the material processing quality is good, and the speed is fast.

[0005] The above-mentioned grinder has an air ring that supplies air to the inside of the mill cylinder. In order to meet the need of adjusting the air volume during operation, the air supply volume needs to be adjusted by a fan. However, when the air supply volume is adjusted by a fan, it is easy for the powder at the connection between the grinding disc and the air ring to fall into the gap between the grinding disc and the air ring when the air volume is reduced. The long-term accumulation of powder will cause the grinding disc and the air ring to wear due to the heat generated by the friction of the powder. Utility Model Content

[0006] In order to increase the service life of the device, the present application provides a grinding machine air ring adjustment device.

[0007] The present application provides a grinding machine air ring adjustment device adopts the following technical solution:

[0008] A grinding machine air ring adjustment device comprises an air ring and a grinding disc arranged in a grinding machine housing, wherein the air ring is coaxially arranged on the inner wall of the grinding machine housing, the grinding disc is located in the air ring and rotates around its own axis and is coaxially arranged with the air ring, a ventilation gap is arranged between the air ring and the grinding disc, a baffle mechanism for adjusting the size of the ventilation gap is arranged on the side of the air ring facing the grinding disc, and the baffle mechanism comprises a plurality of telescopic baffles distributed along the circumference of the air ring, and two adjacent telescopic baffles are arranged in close proximity.

[0009] By adopting the above technical solution, when the grinding disc starts to rotate, the size of the ventilation gap will change through the telescopic adjustment of the telescopic baffle, thereby realizing precise control of the air volume during the grinding process, and reducing the possibility of powder entering the ventilation gap while the grinding disc is rotating, and reducing the probability of the grinding disc being damaged due to continuous friction between the powder and the grinding disc in the ventilation gap, thereby extending the service life of the device; when the grinding disc stops rotating, several telescopic baffles are reset to facilitate ventilation and cleaning of residual powder in the ventilation gap, thereby reducing the error in powder output.

[0010] Optionally, the telescopic baffle includes a baffle body fixedly set on the air ring and a first-level baffle slidably set on the baffle body, and the first-level baffle slides toward the grinding disc to adjust the ventilation gap. When the first-level baffle slides toward the grinding disc to an extreme position, the end of the first-level baffle away from the baffle body abuts against the upper surface of the grinding disc. At this time, the first-level baffle and the baffle body jointly cover the ventilation gap.

[0011] By adopting the above technical solution, when the ventilation gap needs to be adjusted, the first baffle is driven to slide on the baffle body. As the first baffle slides, the size of the ventilation gap will change accordingly, thereby achieving precise control of the air volume during the grinding process. This design can not only effectively prevent powder from falling into the gap between the grinding disc and the air ring, but also significantly reduce the wear caused by the friction of the powder, thereby extending the service life of the equipment.

[0012] Optionally, a guide groove is provided on the inner bottom wall of the first-level baffle plate in the sliding direction of the grinding disc, and the length direction of the guide groove is matched with the sliding stroke of the first-level baffle plate. A guide block is slidably arranged in the guide groove, and the guide block is arranged on the corresponding baffle plate body.

[0013] By adopting the above technical solution, when the first-level baffle is sliding, the guide block will slide accordingly in the guide groove, thereby ensuring that the first-level baffle can always slide smoothly and accurately along the predetermined trajectory, further improving the accuracy of the ventilation gap adjustment.

[0014] Optionally, a limiting slide groove is provided on the inner bottom wall of the first-level baffle plate parallel to the guide groove, the limiting slide groove is matched with the guide groove in the length direction, and a driving groove is provided in the first-level baffle plate in communication with the matching limiting slide groove, a vertically arranged driving column rotates together in the limiting slide groove and the driving groove, and the driving column and the limiting slide groove are slidably matched along the length direction of the limiting slide groove, the driving column is provided on the baffle plate body, a rack is fixedly provided on the inner side wall of the driving groove along the length direction of the driving groove, a secondary driven gear is meshed on the rack, and the secondary driven gear is sleeved on the driving column.

[0015] By adopting the above technical solution, the driving column is driven to rotate, and the driving column rotates to drive the sleeved secondary driven gear to rotate synchronously. Since the corresponding tooth grooves between the secondary driven gear and the rack are meshed, power transmission is realized. When the secondary driven gear rotates, the rack should drive the primary baffle to rotate along with the rotation of the secondary driven gear. However, under the sliding matching limit of the guide groove and the guide block, the rack can only drive the primary baffle to slide back and forth along the guide of the guide groove along with the rotation of the secondary driven gear, thereby realizing the sliding of the primary baffle on the baffle body. The back and forth sliding of the primary baffle on the baffle body causes the size of the ventilation gap to change accordingly, thereby realizing the precise control of the air volume during the grinding process.

[0016] Optionally, the driving column rotates vertically and penetrates the baffle body, and the end of the driving column extending out of the baffle body is sleeved with a first-level driven gear, the wind ring is rotatably provided with a gear ring on the side wall at the bottom of the baffle body, and several of the first-level driven gears are meshed with the gear ring together, a motor is provided on the side wall of the wind ring, and the output shaft of the motor is sleeved with a driving gear meshed with the gear ring.

[0017] By adopting the above technical solution, when the motor is started, its output shaft will drive the driving gear to rotate, and the driving gear will then drive the gear ring to rotate. Since the gear ring is meshed with multiple primary driven gears, the rotation of the gear ring will synchronously drive all primary driven gears and the driving column connected thereto to rotate. This design realizes the synchronous control of multiple telescopic baffles, greatly simplifies the operation process, and improves the adjustment efficiency.

[0018] Optionally, a limit strip is vertically arranged on the inner ring side wall of the secondary driven gear, and a limit slot is provided on the side wall of the driving column corresponding to the limit strip. The limit strip is vertically inserted into the limit slot, and the limit strip and the limit slot are plug-fitted together.

[0019] By adopting the above technical solution, when installing the secondary driven gear on the driving column, the limit bar on the secondary driven gear is vertically inserted into the limit groove on the driving column, ensuring stable cooperation between the two during synchronous rotation and improving the convenience of installation for the operator.

[0020] Optionally, a guide surface is provided on the side wall of the primary baffle facing the grinding disc.

[0021] By adopting the above technical solution, the guide surface can better guide the wind flow, reduce wind resistance and improve ventilation efficiency during the sliding process of the first-level baffle; and the setting of the guide surface facilitates the first-level baffle to move toward the grinding disc and abut against the upper surface of the grinding disc, thereby reducing the possibility of damage to the first-level baffle due to abutment or bumping, thereby further extending the service life of the equipment.

[0022] Optionally, a wear-resistant layer is provided on the inner wall of the air ring.

[0023] By adopting the above technical solution, a wear-resistant layer is provided on the inner wall of the air ring to further improve the durability of the air ring and reduce wear during long-term operation.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. When the grinding disc starts to rotate, the size of the ventilation gap will change through the telescopic adjustment of the telescopic baffle, thereby realizing precise control of the air volume during the grinding process, and reducing the possibility of powder entering the ventilation gap while the grinding disc is rotating, and reducing the probability of the grinding disc being damaged by continuous friction between the powder and the grinding disc in the ventilation gap, thereby extending the service life of the device; when the grinding disc stops rotating, several telescopic baffles are reset to facilitate ventilation and cleaning of residual powder in the ventilation gap, reducing the error of powder output;

[0026] 2. When the ventilation gap needs to be adjusted, the first baffle is driven to slide on the baffle body. As the first baffle slides, the size of the ventilation gap will change accordingly, thereby achieving precise control of the air volume during the grinding process. This design can not only effectively prevent powder from falling into the gap between the grinding disc and the air ring, but also significantly reduce the wear caused by the friction of the powder, thus extending the service life of the equipment;

[0027] 3. When the primary baffle is sliding, the guide block will slide accordingly in the guide groove, thereby ensuring that the primary baffle can always slide smoothly and accurately along the predetermined trajectory, further improving the accuracy of the ventilation gap adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a cross-sectional view of the overall structure of an embodiment of the present application applied to a grinding machine.

[0029] Figure 2 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0030] Figure 3 It is a schematic diagram showing the connection relationship between a group of baffle bodies and a primary baffle in an embodiment of the present application.

[0031] Figure 4 It is a schematic diagram showing the connection relationship between the gear ring and the baffle body in the embodiment of the present application.

[0032] Figure 5 It is an exploded view showing the connection relationship between the secondary driven gear and the driving column in the embodiment of the present application.

[0033] Description of reference numerals:

[0034] 01. Grinding machine housing; 011. Ventilation port; 012. Ventilation gap; 02. Electric reducer; 1. Air ring; 2. Grinding disc; 3. Baffle mechanism; 31. Telescopic baffle; 311. Baffle body; 312. Primary baffle; 3121. Guide groove; 3122. Limiting slide groove; 3123. Driving groove; 4. Guide block; 5. Driving column; 51. Primary driven gear; 52. Secondary driven gear; 521. Limiting strip; 53. Limiting groove; 6. Gear ring; 7. Motor; 71. Driving gear; 8. Rack. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-5 This application is described in further detail.

[0036] The embodiment of the present application discloses a grinding machine air ring adjustment device.

[0037] Reference Figure 1 A grinding machine air ring adjustment device includes an air ring 1 and a grinding disc 2. The air ring 1 is coaxially fixed on the inner wall of a grinding machine housing 01, and a wear-resistant layer is coated on the inner wall of the air ring 1. The grinding disc 2 is coaxially arranged with the air ring 1, and the grinding disc 2 is located in the air ring 1 and rotates around its own axis through an electric reducer 02. There is a ventilation gap 012 between the air ring 1 and the grinding disc 2, and the ventilation gap 012 is connected to the ventilation port 011 of the grinding machine housing 01. A baffle mechanism 3 for adjusting the size of the ventilation gap 012 is arranged on the side of the air ring 1 facing the grinding disc 2.

[0038] Reference Figure 1 When the grinding disc 2 starts to rotate, the size of the ventilation gap 012 will change through the adjustment of the baffle mechanism 3, thereby achieving precise control of the air volume during the grinding process; when the grinding disc 2 stops rotating, the baffle mechanism 3 is reset to facilitate ventilation into the ventilation gap 012 to clean up the residual powder.

[0039] Reference Figure 1 , Figure 2 and Figure 3The baffle mechanism 3 includes a plurality of telescopic baffles 31. Six telescopic baffles 31 are used as an example in this embodiment. The six telescopic baffles 31 are distributed along the circumference of the wind ring 1 on the side of the wind ring 1 facing the grinding disc 2. Each telescopic baffle 31 includes a baffle body 311 and a primary baffle 312. The baffle body 311 is fixedly arranged on the side wall of the wind ring 1 facing the wind ring 1. The primary baffle 312 is slidably arranged on the top wall of the baffle body 311 in the direction facing the grinding disc 2. A guide surface is provided on the side wall of the primary baffle 312 facing the grinding disc 2. The primary baffle 312 slides toward the grinding disc 2 to adjust the ventilation gap 012.

[0040] Reference Figure 1 , Figure 2 and Figure 3 When the primary baffle 312 slides toward the grinding disc 2 to the extreme position, the end guide surface of the primary baffle 312 away from the baffle body 311 abuts against the upper surface of the grinding disc 2. At this time, the primary baffle 312 and the baffle body 311 jointly cover the ventilation gap 012.

[0041] Reference Figure 3 A guide groove 3121 is provided on the inner bottom wall of the first baffle plate 312 in the sliding direction of the grinding disc 2. The length direction of the guide groove 3121 is matched with the sliding stroke of the first baffle plate 312. A guide block 4 is slidably arranged in the guide groove 3121, and the bottom wall of the guide block 4 is fixedly arranged on the top wall of the baffle body 311.

[0042] Reference Figure 3 A limiting slot 3122 is provided on the inner bottom wall of the primary baffle 312 parallel to the guide slot 3121. The limiting slot 3122 is matched with the guide slot 3121 in the length direction, and a driving slot 3123 is provided in the primary baffle 312 to connect with the matching limiting slot 3122. A vertically arranged driving column 5 is rotated together in the limiting slot 3122 and the driving slot 3123. The driving column 5 is slidably matched with the limiting slot 3122 along the length direction of the limiting slot 3122, and the driving column 5 is rotatably provided on the baffle body 311 through a bearing.

[0043] Reference Figure 2 and Figure 4 The wind ring 1 is located on the side wall of the bottom of the baffle body 311, and a gear ring 6 is rotatably arranged through a bearing. A motor 7 is fixedly arranged on the side wall of the wind ring 1. A driving gear 71 is fixedly sleeved on the output shaft of the motor 7, and the driving gear 71 is meshed with the gear ring 6. Each driving column 5 is fixedly sleeved with a primary driven gear 51 meshing with the gear ring 6.

[0044] Reference Figure 3 and Figure 5A rack 8 is fixedly arranged on the inner side wall of the driving groove 3123 along the length direction of the driving groove 3123, and a secondary driven gear 52 is meshed on the rack 8. The secondary driven gear 52 is located in the driving groove 3123, and a limiting strip 521 is vertically integrally formed on the inner ring side wall of the secondary driven gear 52. A limiting groove 53 is provided on the side wall at the top of the driving column 5 corresponding to the limiting strip 521. The limiting strip 521 is vertically inserted in the limiting groove 53, and the limiting strip 521 and the limiting groove 53 are plugged into each other.

[0045] The implementation principle of a grinding machine air ring adjustment device in the embodiment of the present application is as follows: when the motor 7 is started, its output shaft will drive the driving gear 71 to rotate, and the driving gear 71 will then drive the gear ring 6 to rotate; since the gear ring 6 is meshed with multiple primary driven gears 51, the rotation of the gear ring 6 will synchronously drive all primary driven gears 51 and the driving column 5 connected thereto to rotate; the driving column 5 rotates to drive the sleeved secondary driven gear 52 to rotate synchronously, and since the corresponding tooth grooves between the secondary driven gear 52 and the rack 8 are meshed, power transmission is achieved. When the secondary driven gear 52 rotates, the rack 8 should drive the primary baffle 312 to rotate as the secondary driven gear 52 rotates. However, under the sliding cooperation limit of the guide groove 3121 and the guide block 4, the rack 8 can only drive the primary baffle 312 to slide back and forth along the guide groove 3121 as the secondary driven gear 52 rotates, thereby achieving the sliding of the primary baffle 312 on the baffle body 311. The back and forth sliding of the primary baffle 312 on the baffle body 311 causes the size of the ventilation gap 012 to change accordingly, thereby achieving precise control of the air volume during the grinding process.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A grinding machine air ring adjustment device, characterized in that , comprising an air ring (1) and a grinding disc (2) arranged in a grinding machine housing (01), wherein the air ring (1) is coaxially arranged on the inner wall of the grinding machine housing (01), the grinding disc (2) is located in the air ring (1) and rotates around its own axis, and is coaxially arranged with the air ring (1), a ventilation gap (012) is arranged between the air ring (1) and the grinding disc (2), and a baffle mechanism (3) for adjusting the size of the ventilation gap (012) is arranged on the side of the air ring (1) facing the grinding disc (2), and the baffle mechanism (3) includes a plurality of telescopic baffles (31) distributed along the circumference of the air ring (1), and two adjacent telescopic baffles (31) are arranged in close contact with each other.

2. A grinding machine air ring adjustment device according to claim 1, characterized in that: The telescopic baffle (31) comprises a baffle body (311) fixedly arranged on the air ring (1) and a primary baffle (312) slidably arranged on the baffle body (311); the primary baffle (312) slides toward the grinding disc (2) to adjust the ventilation gap (012); when the primary baffle (312) slides toward the grinding disc (2) to an extreme position, the end of the primary baffle (312) away from the baffle body (311) abuts against the upper surface of the grinding disc (2); at this time, the primary baffle (312) and the baffle body (311) jointly cover the ventilation gap (012).

3. A grinding machine air ring adjustment device according to claim 2, characterized in that: A guide groove (3121) is provided on the inner bottom wall of the primary baffle (312) in the sliding direction toward the grinding disc (2); the length direction of the guide groove (3121) is matched with the sliding stroke of the primary baffle (312); a guide block (4) is slidably arranged in the guide groove (3121); and the guide block (4) is arranged on the corresponding baffle body (311).

4. A grinding machine air ring adjustment device according to claim 3, characterized in that: A limiting slide groove (3122) is provided on the inner bottom wall of the first baffle plate (312) parallel to the guide groove (3121), and the limiting slide groove (3122) is matched with the guide groove (3121) in the length direction, and a driving groove (3123) is provided in the first baffle plate (312) to communicate with the matching limiting slide groove (3122), and a vertically arranged driving column (55) is rotated together in the limiting slide groove (3122) and the driving groove (3123). ), and the driving column (5) and the limiting slide groove (3122) are slidably matched along the length direction of the limiting slide groove (3122), the driving column (5) is arranged on the baffle body (311), and a rack (8) is fixedly arranged on the inner side wall of the driving groove (3123) along the length direction of the driving groove (3123), and a secondary driven gear (52) is meshed on the rack (8), and the secondary driven gear (52) is sleeved on the driving column (5).

5. A grinding machine air ring adjustment device according to claim 4, characterized in that: The driving column (5) is rotatably mounted through the baffle body (311) in the vertical direction, and the end of the driving column (5) extending out of the baffle body (311) is sleeved with a primary driven gear (51). A gear ring (6) is rotatably mounted on the side wall of the air ring (1) located at the bottom of the baffle body (311), and a plurality of the primary driven gears (51) are meshed with the gear ring (6). A motor (7) is mounted on the side wall of the air ring (1), and a driving gear (71) meshed with the gear ring (6) is sleeved on the output shaft of the motor (7).

6. A grinding machine air ring adjustment device according to claim 4, characterized in that: A limit strip (521) is vertically arranged on the inner ring side wall of the secondary driven gear (52), and a limit groove (53) is provided on the side wall of the driving column (5) corresponding to the limit strip (521). The limit strip (521) is vertically inserted into the limit groove (53), and the limit strip (521) and the limit groove (53) are plug-fitted.

7. The grinding machine air ring adjustment device according to claim 2, characterized in that: A guide surface is provided on the side wall of the primary baffle (312) facing the grinding disc (2).

8. The grinding machine air ring adjustment device according to claim 1, characterized in that: A wear-resistant layer is provided on the inner side wall of the air ring (1).

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