CN211755568U

CN211755568U - Ball mill

Info

Publication number: CN211755568U
Application number: CN201922461820.1U
Authority: CN
Inventors: 朱国富; 沈大龙; 朱瑛; 周杏华; 刘玉娣
Original assignee: Changzhou Jinwo Welding And Cutting Equipment Co ltd
Current assignee: Changzhou Jinwo Welding And Cutting Equipment Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-10-27
Anticipated expiration: 2029-12-31

Abstract

The utility model relates to a ball mill, which comprises a power device, a main shaft, a pressing plate, a transmission disc, a grinding plate and an upper bracket and a lower bracket; the main shaft is at least divided into an upper section, a middle section and a lower section; the lower section of the main shaft is inserted into a central shaft hole of the pressure plate and fixedly connected with the pressure plate; the lower bracket is sleeved on the outer sides of the pressing plate and the middle section of the main shaft and movably connected with the pressing plate and the middle section of the main shaft; the transmission disc is sleeved outside the lower support and is movably connected with the lower support through a deep groove ball bearing; the pressing plate is fixedly connected with the transmission disc; the upper bracket is fixedly connected with the lower bracket, and the lower end of the upper bracket is connected with the middle section of the main shaft through a bearing group; the upper end of the upper bracket is connected with the upper section of the main shaft through a tapered roller bearing; and the upper end of the grinding plate main shaft is fixed in the groove and connected. The utility model discloses simple structure, the novelty has not only improved grinding work efficiency, and job stabilization is reliable moreover, has prolonged the life of equipment to the working noise of equipment has been reduced.

Description

Ball mill

Technical Field

The utility model belongs to the grinding device field, in particular to ball mill.

Background

The ball mill is the key equipment for crushing the materials after the materials are crushed. It is widely used in cement, silicate products, novel building materials, refractory materials, chemical fertilizers, hard alloy products, nonferrous metal ore dressing, glass ceramics and other production industries.

In the process of driving a cylinder to rotate at a high speed by a driving part of the existing ball mill, a grinding body generates a larger centrifugal inertia force due to too high rotating speed, so that the grinding body is attached to the inner surface of the cylinder and does constant-speed circular motion along with the inner surface, and therefore, the ball mill cannot impact and crush materials and loses due effects. When the grinding quality of the ball mill for the materials is reduced, the particle diameter of the materials is larger, so that the strength of hard alloy products produced by the materials is reduced, and the durability is reduced.

In addition, in the process of driving the cylinder to rotate at high speed by a power device including the horizontal grinding mill, the ball mill can generate jumping or instability phenomenon integrally due to high rotating speed, working noise during grinding is increased, and the service life of the ball mill is shortened.

Disclosure of Invention

An object of the utility model is to provide an upright ball mill that the equilibrium is high, stability is good to solve the technical problem of the ball mill among the prior art.

In order to realize the purpose, the technical scheme of the utility model is that:

a ball mill comprises a power device, a main shaft, a pressing plate, a transmission disc, a grinding plate, an upper bracket and a lower bracket; the main shaft is at least divided into an upper section, a middle section and a lower section, and the radiuses of the upper section, the middle section and the lower section are gradually reduced; the power device is connected with the transmission disc;

the pressing plate is provided with a central shaft hole, and the lower section of the main shaft is inserted into the central shaft hole of the pressing plate and fixedly connected with the pressing plate;

the lower bracket is sleeved on the outer sides of the pressing plate and the middle section of the main shaft and movably connected with the pressing plate and the middle section of the main shaft; the transmission disc is sleeved outside the lower support and is movably connected with the lower support through a deep groove ball bearing; the pressing plate extends outwards and is fixedly connected with the lower end face of the transmission disc;

the upper bracket is fixedly connected with the lower bracket, and the joint of the upper bracket and the lower bracket is positioned in the direction of the upper bracket to form an annular groove; the nut is arranged and is fixedly sleeved on the middle section of the main shaft, a reverse annular groove corresponding to the annular groove is formed between the nut and the upper section of the main shaft, a bearing group installation cavity is formed between the annular groove and the reverse annular groove in a combined mode, and the lower end of the upper support is connected with the middle section of the main shaft through a bearing group;

the upper end of the upper bracket is provided with a mounting groove, and the upper end of the upper bracket is connected with the upper section of the main shaft through a large conical roller bearing arranged in the mounting groove;

the grinding plate is characterized in that a fixing groove is formed in the center of the bottom surface of the grinding plate, and the upper end face of the spindle is embedded into the fixing groove and fixedly connected with the grinding plate.

As a further improvement of the utility model: and a framework oil seal is arranged between the lower support and the middle section of the main shaft, so that oil injected into the upper support is prevented from leaking.

As a further improvement of the utility model: the bearing group comprises a cylindrical roller bearing above and a tapered roller bearing below, and a gap is arranged between the cylindrical roller bearing and the tapered roller bearing, so that the working stability of the grinding machine is ensured.

As a further improvement of the utility model: and a retaining pad is arranged between the tapered roller bearing and the nut below the tapered roller bearing, so that the stable work of the bearing is ensured.

As a further improvement of the utility model: and a sealing ring is arranged between the lower support and the middle section of the main shaft.

As a further improvement of the utility model: an oil filling hole is formed in the upper support, and lubricating oil is filled between the upper support and the main shaft.

As a preferred embodiment of the present invention: the grinding device is provided with a cylinder body which is fixed on a grinding plate.

The utility model discloses a theory of operation does: the power device is connected with the transmission disc and drives the transmission disc to rotate, the transmission disc drives the pressing plate and the main shaft to rotate, and the main shaft drives the grinding plate to rotate.

The utility model has direct and simple transmission structure, and improves the grinding work efficiency; simultaneously the utility model discloses a structural design to the main shaft is for rotating and supporting the core, has guaranteed the equilibrium of equipment, and whole support stable in structure has reduced beating or vibrations of equipment when high-speed operation simultaneously, has prolonged the life of equipment, and has reduced the operating noise of equipment.

Drawings

Fig. 1 is an assembly diagram of the present invention.

Detailed Description

The technical solution of the present invention will be further described with reference to the accompanying drawings and specific embodiments.

Example 1, as shown in figure 1: the embodiment relates to a ball mill, which comprises a power device, a main shaft 1, a pressure plate 4, a transmission disc 5, a grinding plate 6, an upper bracket and a lower bracket; the main shaft 1 is divided into an upper section, a middle section and a lower section, wherein the upper section 1-3 of the main shaft is divided into an upper stage and a lower stage, and the radiuses of the upper section, the middle section and the lower section of the main shaft are gradually reduced; the power device is connected with the transmission disc 5 through a belt.

As shown in fig. 1: the pressing plate 4 is provided with a central shaft hole, the lower section 1-1 of the main shaft is inserted into the central shaft hole of the pressing plate, and the pressing plate 4 is fixedly connected; as shown in fig. 1: the lower bracket 3 is similar to an inverted H-shaped structure, and the middle of the lower bracket is provided with a shaft hole which is sleeved at the outer side of the middle section 1-2 of the main shaft through the shaft hole and is movably connected with the main shaft; the lower part of the lower bracket is sleeved on the upper part of the pressure plate 4; as shown in fig. 1: a framework oil seal 10 and a sealing ring 11 are arranged between the lower support 3 and the middle section 1-2 of the main shaft, and the sealing ring 11 is positioned below the framework oil seal 10.

As shown in fig. 1: the transmission disc 5 is sleeved outside the lower support 3 and is movably connected with the lower support 3 through two rows of deep groove ball bearings 7, the inner ring of each deep groove ball bearing 7 is supported by an outer clamp spring 8, the outer clamp spring 8 is fixed on the lower support 3, and the outer ring of each deep groove ball bearing 7 is supported on the pressing plate 4; as shown in fig. 1: the pressing plate 4 extends outwards and is fixedly connected with the lower end face of the transmission disc 5.

As shown in fig. 1: the upper bracket 2 is fixedly connected with the lower bracket 3, and the joint of the upper bracket and the lower bracket is positioned in the direction of the upper bracket to form an annular groove; a nut 9 is arranged and is fixedly sleeved on the middle section 1-2 of the main shaft, a reverse annular groove corresponding to the annular groove is formed between the nut 9 and the upper section 1-3 of the main shaft, a bearing group installation cavity is formed between the annular groove and the reverse annular groove in a combined manner, and the lower end of the upper bracket 2 is connected with the middle section 1-2 of the main shaft through a bearing group; as shown in fig. 1: the bearing set comprises an upper cylindrical roller bearing 12 and a lower tapered roller bearing 14, a gap is arranged between the cylindrical roller bearing 12 and the tapered roller bearing 14, specifically, an inner ring of the cylindrical roller bearing 12 is supported by a clamp spring 8 fixed on the main shaft, and the cylindrical roller bearing 12 is connected with an outer ring of the tapered roller bearing 14 through a spacer 13; and a retaining pad is arranged between the inner ring of the tapered roller bearing 14 and the lower nut 9.

As shown in fig. 1: the upper end of the upper bracket 2 is provided with a mounting groove, and the upper end of the upper bracket 2 is connected with the upper level of the upper section 1-3 of the main shaft through a large conical roller bearing 15 arranged in the mounting groove. As shown in fig. 1: a fixed groove is formed in the center of the bottom surface of the grinding plate 6, and the upper end surface of the main shaft 1 is embedded into the fixed groove and fixedly connected with the grinding plate 6 through bolts; as shown in fig. 1: a dustproof felt 16 is arranged between the grinding plate 6 and the upper bracket 2.

As shown in fig. 1: an oil filling hole 2-1 is arranged on the upper bracket, and lubricating oil is filled between the upper bracket 2 and the main shaft 1.

The machine of grinding in this embodiment is still including the barrel, common structures such as box, for example the barrel can be fixed on grinding the board, and the upper bracket is fixed on the box etc. because it is the same with other equipment, does not have the innovation, the utility model discloses no longer discuss one by one.

The utility model discloses simple structure, the novelty has not only improved grinding work efficiency, and job stabilization is reliable moreover, has prolonged the life of equipment to the working noise of equipment has been reduced.

The foregoing embodiments and description have been provided to illustrate the principles of the invention and, without departing from the spirit and scope of the invention, there are various changes and modifications that fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A ball mill characterized in that: comprises a power device, a main shaft, a pressing plate, a transmission disc, a grinding plate, an upper bracket and a lower bracket; the main shaft is at least divided into an upper section, a middle section and a lower section, and the radiuses of the upper section, the middle section and the lower section are gradually reduced; the power device is connected with the transmission disc; the pressing plate is provided with a central shaft hole, and the lower section of the main shaft is inserted into the central shaft hole of the pressing plate and fixedly connected with the pressing plate;

the lower bracket is sleeved on the outer sides of the pressing plate and the middle section of the main shaft and movably connected with the pressing plate and the middle section of the main shaft; the transmission disc is sleeved outside the lower support and is movably connected with the lower support through a deep groove ball bearing; the pressing plate extends outwards and is fixedly connected with the lower end face of the transmission disc; the upper bracket is fixedly connected with the lower bracket, and the joint of the upper bracket and the lower bracket is positioned in the direction of the upper bracket to form an annular groove; the nut is arranged and is fixedly sleeved on the middle section of the main shaft, a reverse annular groove corresponding to the annular groove is formed between the nut and the upper section of the main shaft, a bearing group installation cavity is formed between the annular groove and the reverse annular groove in a combined mode, and the lower end of the upper support is connected with the middle section of the main shaft through a bearing group; the upper end of the upper bracket is provided with a mounting groove, and the upper end of the upper bracket is connected with the upper section of the main shaft through a large conical roller bearing arranged in the mounting groove; the grinding plate is characterized in that a fixing groove is formed in the center of the bottom surface of the grinding plate, and the upper end face of the spindle is embedded into the fixing groove and fixedly connected with the grinding plate.

2. The ball mill according to claim 1, characterized in that: and a framework oil seal is arranged between the lower support and the middle section of the main shaft.

3. The ball mill according to claim 1, characterized in that: the bearing group comprises a cylindrical roller bearing above and a tapered roller bearing below, and a gap is arranged between the cylindrical roller bearing and the tapered roller bearing.

4. The ball mill according to claim 3, characterized in that: and a retaining pad is arranged between the tapered roller bearing and the lower nut.

5. The ball mill according to claim 2, characterized in that: and a sealing ring is arranged between the lower support and the middle section of the main shaft.

6. The ball mill according to claim 1, characterized in that: an oil filling hole is formed in the upper support, and lubricating oil is filled between the upper support and the main shaft.

7. The ball mill according to claim 1, characterized in that: the grinding device is provided with a cylinder body which is fixed on a grinding plate.