A replaceable trunnion grinding cylinder

Abstract

The utility model discloses a replaceable ear shaft grinding cylinder, comprising a grinding cylinder inner cylinder and a grinding cylinder outer sleeve, a grinding cylinder hoop plate is fixed on the grinding cylinder outer sleeve, a grinding cylinder ear shaft seat is fixed on the grinding cylinder hoop plate, the grinding cylinder ear shaft seat is provided with a positioning hole and a thread hole, an ear shaft is installed through the positioning hole, and the ear shaft is fixed to the grinding cylinder ear shaft seat through the combination of bolts and thread holes. The utility model is suitable for the grinding work of most vertical stirring mills, reduces the difficulty of welding at the ear shaft, shortens the working hours and reduces the cost; secondly, the processability is optimized, so that when the grinding cylinder is locally damaged, only the damaged part needs to be replaced, thereby reducing waste; the ear shaft has an eccentric positioning boss, the ear shaft height can be adjusted, and the interchangeability problem is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of grinding cylinders, and in particular relates to a replaceable trunnion grinding cylinder. Background Art

[0002] With the continuous development of science and technology, customers have higher and higher requirements for equipment in various aspects (such as structure, performance, appearance, practicality, etc.). How to reduce the downtime of customers after some core components of the equipment are damaged has also become a prerequisite that must be considered for equipment innovation. The design of the grinding cylinder ear shaft of the existing stirring mill is to open holes in the grinding cylinder hoop plate and the grinding cylinder outer shell, insert the ear shaft and weld it. This structure first requires opening holes in the grinding cylinder outer shell, which destroys the integrity of the grinding cylinder outer shell. The welding difficulty at the ear shaft is relatively high. Once welding defects occur during the welding process of the ear shaft and the grinding cylinder outer shell, it will inevitably cause the jacket to leak; secondly, the grinding cylinder adopts an integral welding method. Whether the ear shaft is damaged or the cylinder body is damaged, the grinding cylinder needs to be replaced as a whole, causing great waste; thirdly, the grinding cylinder will inevitably expand and deform due to heat during the welding process, and will shrink when it is cold after the welding is completed. This deformation is irregular and uncontrollable, resulting in the uniqueness of the grinding cylinders produced. The grinding cylinders cannot be mass-produced. When the grinding cylinder is damaged during use, the interchangeability between the new and old grinding cylinders is very poor. Utility Model Content

[0003] In order to overcome the above technical problems existing in the prior art, the purpose of the utility model is to provide a replaceable trunnion grinding cylinder, which shortens the working time and reduces the cost.

[0004] The utility model provides a replaceable ear shaft grinding cylinder, comprising a grinding cylinder inner cylinder and a grinding cylinder outer cylinder, a grinding cylinder hoop plate is fixed on the grinding cylinder outer cylinder, a grinding cylinder ear shaft seat is fixed on the grinding cylinder hoop plate, the grinding cylinder ear shaft seat is provided with a positioning hole and a thread hole, the ear shaft is installed through the positioning hole, and the ear shaft is fixed to the grinding cylinder ear shaft seat by the combination of bolts and thread holes.

[0005] A grinding cylinder hoop plate is welded and fixed on the outer sleeve of the grinding cylinder, and a grinding cylinder trunnion seat is welded and fixed on the grinding cylinder hoop plate.

[0006] The grinding cylinder trunnion seat is provided with thread holes, and the lower part of the grinding cylinder trunnion seat is provided with positioning holes.

[0007] The ear shaft is provided with an eccentric positioning boss, and the positioning boss is installed in the positioning hole.

[0008] A flat washer and a spring washer are arranged between the bolt and the ear shaft.

[0009] The upper parts of the ear shaft and the grinding cylinder ear shaft seat are provided with pins.

[0010] The utility model provides a replaceable ear shaft grinding cylinder, which has the beneficial effect of being suitable for the grinding work of most vertical stirred mills, reducing the difficulty of welding at the ear shaft, shortening the working hours and reducing the cost; secondly, the processability is optimized so that when local damage occurs to the grinding cylinder, only the damaged part needs to be replaced, thus reducing waste; the ear shaft has an eccentric positioning boss, the ear shaft height can be adjusted, and the interchangeability problem is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0012] Figure 2 It is a structural schematic diagram of the utility model;

[0013] Figure 3 yes Figure 1 A-direction view;

[0014] Note in the figure:

[0015] 1. Grinding cylinder hoop plate; 2. Grinding cylinder ear shaft seat; 3. Pin; 4. Ear shaft; 5. Grinding cylinder outer shell; 6. Grinding cylinder inner cylinder; 7. Bolt; 8. Eccentric positioning boss. DETAILED DESCRIPTION

[0016] With reference to the accompanying drawings, a replaceable trunnion grinding cylinder provided by the utility model is described in detail in combination with an embodiment.

[0017] Example

[0018] Reference Figure 1-Figure 3 The replaceable trunnion grinding cylinder of the present embodiment comprises a grinding cylinder inner cylinder 6 and a grinding cylinder outer shell 5. The grinding cylinder hoop plate 1 is directly welded to the grinding cylinder outer shell according to the size of the drawing during the manufacturing process of the grinding cylinder, and the grinding cylinder trunnion seat 2 is welded to the grinding cylinder hoop plate 1. The grinding cylinder trunnion seat 2 is provided with a thread hole, and the lower part of the grinding cylinder trunnion seat is provided with a positioning hole. The trunnion 4 is provided with an eccentric positioning boss 8. The eccentric positioning boss 8 of the trunnion 4 and the positioning hole of the grinding cylinder trunnion seat 2 are installed in coordination. The trunnion 4 is fixed to the grinding cylinder trunnion seat 2 by bolts 7, spring washers, and flat washers. The pin 3 is drilled and embedded in the trunnion 4 and the grinding cylinder trunnion seat 2 after the trunnion 4 is fixed.

[0019] When the grinding cylinder of the stirred mill is damaged, first remove the entire grinding cylinder from the equipment, take out the pin 3 through the wire puller, remove the bolt 7, spring washer, and flat washer, screw the bolt 7 out of the thread hole, and disengage the eccentric locating boss 8 of the ear shaft 4 from the locating hole of the grinding cylinder ear shaft seat. Separate the ear shaft 4 from the cylinder body. If the ear shaft 4 is damaged, replace the ear shaft 4.

[0020] Replace the damaged cylinder with a new one, insert the eccentric positioning boss 8 of the ear shaft 4 into the positioning hole of the grinding cylinder ear shaft seat 2, and adjust the position of the ear shaft 4 by rotating the ear shaft 4. Use bolts 7, spring washers, and flat washers to fix the ear shaft 4 on the grinding cylinder ear shaft seat 2 and lock it, re-drill and insert the pin 3, and finally reinstall the entire grinding cylinder onto the stirring mill.

Claims

1. A replaceable trunnion grinding cylinder, comprising a grinding cylinder inner cylinder and a grinding cylinder outer cylinder, characterized in that: A grinding cylinder hoop plate is fixed on the outer sleeve of the grinding cylinder, a grinding cylinder ear shaft seat is fixed on the grinding cylinder hoop plate, the grinding cylinder ear shaft seat is provided with a positioning hole and a thread hole, the ear shaft is installed through the positioning hole, and the ear shaft is fixed to the grinding cylinder ear shaft seat by bolts and thread holes.

2. The replaceable trunnion grinding cylinder according to claim 1, characterized in that: A grinding cylinder hoop plate is welded and fixed on the outer sleeve of the grinding cylinder, and a grinding cylinder trunnion seat is welded and fixed on the grinding cylinder hoop plate.

3. The replaceable trunnion grinding cylinder according to claim 1, characterized in that: The grinding cylinder trunnion seat is evenly distributed with thread holes, and the lower part of the grinding cylinder trunnion seat is provided with a positioning hole.

4. The replaceable trunnion grinding cylinder according to claim 3, characterized in that: The ear shaft is provided with an eccentric positioning boss, and the positioning boss is installed in the positioning hole.

5. The replaceable trunnion grinding cylinder according to claim 1, characterized in that: A flat washer and a spring washer are arranged between the bolt and the ear shaft.

6. The replaceable trunnion grinding cylinder according to claim 1, characterized in that: The upper parts of the ear shaft and the grinding cylinder ear shaft seat are provided with pins.

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