A tough ball mill for magnetic abrasives

Abstract

This solution discloses a tough ball mill for magnetic abrasives in the field of ball milling equipment, including an inner cylinder, an outer cylinder and an elastic mechanism, wherein the inner cylinder is composed of a plurality of arc-shaped fixed plates and an arc-shaped inner lining plate arranged at intervals, and the elastic mechanism includes a positioning block, wherein the positioning block passes through the outer cylinder, and the positioning block outer shell is provided with a positioning ring, and the positioning block outer shell is provided with a first spring, and the first spring is clamped on the positioning ring, and both ends of the first spring are fixedly connected to the fixed plate, and the inner lining plate is slidably connected to the fixed plates on both sides. The ball mill in this solution can reduce the probability of damage to the inner lining plate during use.

Description

Technical Field

[0001] The invention relates to the field of ball milling equipment, in particular to a toughness ball mill for magnetic abrasives. Background Art

[0002] Magnetic grinding technology is a processing technology that uses the effect of magnetic abrasives and auxiliary magnetic fields for precision grinding. This process has strong adaptability and is suitable for both plane grinding and two-dimensional and even three-dimensional complex curved surface grinding. It can be widely used in machinery, molds, medical equipment, electronics and optics. Magnetic grinding has good flexibility, adaptability, self-sharpening, controllability, low temperature rise, no degenerate layer, high processing quality, high efficiency, and no need for tool wear compensation and no need for shaping. It has attracted widespread attention internationally. The research results on magnetic grinding have also been applied in many occasions such as plane, outer cylindrical surface, inner cylindrical surface and forming surface finishing and burr removal. For example, in the conventional magnetic grinding process, the workpiece is placed between the N and S poles, so that the workpiece maintains a certain gap relative to the N and S poles, and then the granular magnetic abrasive is placed in the magnetic field. The magnetic abrasive is orderly arranged in the direction of the magnetic lines of force in the magnetic field to form a magnetic grinding brush. When the workpiece moves relative to the magnetic pole, the magnetic grinding brush immediately grinds the surface of the workpiece. However, in the magnetic grinding process of magnetic materials, the surface of the workpiece can be magnetized by magnetic poles, such as the poles of the tool. Therefore, the granular magnetic abrasive may be attracted by the magnetic force of the workpiece surface, bending in the middle of the magnetic grinding brush, and the granular magnetic abrasive may be stirred at the lower end, which may cause problems such as abrasive refinement, crushing and reduced sharpness. In addition, some magnetic abrasives are attracted by the magnetic workpiece and remain on the processing surface, which gradually reduces the granular magnetic abrasives involved in cutting and reduces the processing efficiency, especially when processing larger workpiece surfaces. This situation is more prominent.

[0003] Ball mill is the key equipment for crushing materials after they are broken. Ball mill has a wide range of uses and is widely used in cement, silicate products, new building materials, refractory materials, fertilizers, black and non-ferrous metal beneficiation, glass and ceramics and other production industries. With the rapid development of society, people need to use production industries in more and more places, so the production industry has an increasing demand for ball mills. Existing ball mills are generally composed of a horizontal cylinder, a hollow shaft for inlet and outlet, and a grinding head. Step linings and flat linings are provided inside the cylinder. When the cylinder of the ball mill rotates, the grinded material is attached to the lining plate inside the cylinder due to inertia, centrifugal force and friction and is taken away. When it is brought to a certain height, the grinded material falls due to its own gravity, and then smashes the material in the cylinder, thereby completing the crushing of the raw materials. Since the objects to be ground are mostly steel balls, when the balls fall from a certain height, they will collide violently with the liner, resulting in loud noise. At the same time, it is very easy to damage the liner, causing damage to the ball mill cylinder structure and failure to grind normally. Summary of the invention

[0004] The present invention is intended to provide a tough ball mill for magnetic abrasives, so as to solve the problem that the inner lining plate of the existing ball mill is damaged after the ground material collides with the inner lining plate during use.

[0005] A toughness ball mill for magnetic abrasives in this scheme includes an inner cylinder, an outer cylinder and an elastic mechanism, wherein the inner cylinder is composed of a plurality of arc-shaped fixed plates and an arc-shaped inner lining plate arranged at intervals, and the elastic mechanism includes a positioning block, wherein the positioning block passes through the outer cylinder, a positioning ring is disposed on the outer sleeve of the positioning block, a first spring is disposed on the outer sleeve of the positioning block, the first spring is clamped on the positioning ring, both ends of the first spring are fixedly connected to the fixed plate, and the inner lining plate is slidably connected to the fixed plates on both sides.

[0006] The working principle and beneficial effects of this solution: During use, when the outer cylinder rotates, the inner cylinder drives the object to be ground to rotate accordingly. When the object to be ground reaches a certain height, it falls due to its own gravity and hits the inner cylinder. At this time, the inner lining plate is squeezed by gravity, and the first spring is compressed, so that the inner lining plate slides between two adjacent fixed plates. Due to the setting of the positioning ring, the part of the first spring located on the positioning ring is stretched, and the part located under the positioning ring is squeezed, so as to disperse the force on the inner lining plate and the outer cylinder. The device in this solution uses the first spring to reduce the impact, and sets a positioning block and a positioning ring to divide the force of the first spring into the inner lining plate, the positioning ring and the outer cylinder to bear, so as to disperse the force generated by the impact.

[0007] Furthermore, a groove is provided in the positioning block, a limit block is provided in the groove, the limit block is fixedly connected to a limit rod, one end of the limit rod away from the limit block is fixedly connected to the inner lining plate, a second spring is sleeved on the limit rod, one end of the second spring is connected to the inner lining plate, and the other end of the second spring is connected to the inner bottom of the groove. This arrangement enables the limit rod to bear the impact force first, the limit block moves downward so that the part of the second spring located below the limit block is squeezed, and when the second spring is squeezed to a certain extent, it will drive the positioning block to compress, and this arrangement can disperse the impact force into multiple steps, the limit block bears the first part, and then transmits it to the second spring at the lower part of the limit block, so that the part of the second spring located below the limit block is compressed, and when it is compressed to a certain extent, the impact force drives the positioning block to move downward, so that the positioning block compresses the first spring, thereby decomposing the impact force.

[0008] Furthermore, the circumferential surface of the positioning block is vertically slidably connected to the outer cylinder, so that the positioning block can be easily displaced.

[0009] Furthermore, an air passage is provided on the positioning block, one end of which is connected to the inner tube and the outer tube, and the other end of which is connected to the outside of the outer tube. In this way, when the inner lining plate is impacted and squeezed, the gas between the outer tube and the inner tube is compressed, and the gas energy is sent out through the air passage, which can reduce noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of a toughness ball mill for magnetic abrasives of the present invention;

[0011] Figure 2 for Figure 1 Sectional view

[0012] Figure 3 for Figure 2 A partial enlarged view of . DETAILED DESCRIPTION

[0013] The following is a further detailed description through specific implementation methods:

[0014] The reference numerals in the drawings of the specification include: outer cylinder 1, inner lining plate 2, fixing plate 3, positioning block 4, first spring 5, positioning ring 6, limiting rod 7, second spring 8, limiting block 9, airway 10.

[0015] The embodiment is basically as shown in the attached Figure 1 , Figure 2 and Figure 3As shown: A toughness ball mill for magnetic abrasives, comprising an inner cylinder, an outer cylinder 1 and an elastic mechanism, wherein the inner cylinder is composed of a plurality of arc-shaped fixing plates 3 and an arc-shaped inner lining plate 2 arranged at intervals, wherein the fixing plates 3 and the inner lining plate 2 are arranged vertically, and the elastic mechanism comprises a positioning block 4, wherein the positioning block 4 penetrates the outer cylinder 1, wherein the circumferential surface of the positioning block 4 is vertically slidably connected to the outer cylinder 1, wherein an air passage 10 is arranged on the positioning block 4, wherein one end of the air passage 10 is connected to the inner cylinder and the outer cylinder 1, and the other end of the air passage 10 is connected to the outside of the outer cylinder 1, and a positioning ring is arranged on the outer cover of the positioning block 4 6. A first spring 5 is provided on the outer sleeve of the positioning block 4, and the first spring 5 is clamped on the positioning ring 6. Both ends of the first spring 5 are fixedly connected to the fixing plate 3. The inner lining plate 2 is slidably connected to the fixing plates 3 on both sides. A groove is provided in the positioning block 4, and a limit block 9 is provided in the groove. The limit block 9 is fixedly connected to a limit rod 7. One end of the limit rod 7 away from the limit block 9 is fixedly connected to the inner lining plate 2. A second spring 8 is sleeved on the limit rod 7. One end of the second spring 8 is connected to the inner lining plate 2, and the other end of the second spring 8 is connected to the inner bottom of the groove.

[0016] When in use, when the outer cylinder 1 rotates, the inner cylinder drives the grinded material to rotate accordingly. When the grinded material reaches a certain height, it falls due to its own gravity and hits the inner cylinder. At this time, the inner lining plate 2 is squeezed by gravity, and the limit rod 7 first bears the impact force, and the limit block 9 moves down so that the part of the second spring 8 located below the limit block 9 is squeezed. When the second spring 8 is squeezed to a certain extent, it will drive the positioning block 4 to be compressed, and the first spring 5 is compressed, so that the inner lining plate 2 slides between two adjacent fixed plates 3. Due to the setting of the positioning ring 6, the part of the first spring 5 located on the positioning ring 6 The part under the positioning ring 6 is stretched, and the part under the positioning ring 6 is squeezed, so as to disperse the force on the inner lining plate 2 and the outer tube 1. This arrangement disperses the impact force into multiple steps. The limit block bears the first part, and then transmits it to the second spring 8 under the limit block, so that the part of the second spring 8 under the limit block is compressed. When compressed to a certain extent, the impact force drives the positioning block 4 to move downward, so that the positioning block 4 compresses the first spring 5, thereby decomposing the impact force; at the same time, after the inner lining plate 2 is impacted and squeezed, the gas between the outer tube 1 and the inner tube is compressed, and the gas energy is sent out through the airway 10, which can reduce noise. The device in this scheme uses the first spring 5 to reduce the impact, and sets the positioning block 4 and the positioning ring 6. The force of the first spring 5 is divided into the inner lining plate 2, the positioning ring 6 and the outer tube 1 to bear, so as to disperse the force generated by the impact.

[0017] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A toughness ball mill for magnetic abrasives, characterized in that: The cam is an elastic member formed between a first end and a second end of the first spring, the second end of the second spring being connected to the cam and the second end of the second spring being connected to the cam.

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