CN111185282B - A ball milling system - Google Patents

Abstract

The invention discloses a ball mill system, which includes a grinding cylinder and a centrifugal separation device, as well as a driving device that drives the centrifugal separation device to work. The centrifugal separation device includes a separation inner cylinder and a separation outer sleeve that is sleeved on the outside of the separation inner cylinder. The barrel is provided with an inner barrel separation hole; the separation outer cover is provided with an outer outer separation hole that allows materials to enter the inner barrel separation hole and a medium conveying mechanism that provides the power for the outward movement of the grinding medium when rotating. When in use, the separation device rotates under the drive of the separation drive shaft. The separation drive shaft is provided with a discharge channel in the axial direction, and the discharge channel is connected with the separation hole of the inner cylinder and the separation hole of the outer sleeve. The medium conveying mechanism accelerates the grinding medium. And it can keep away from the separation jacket, while the ground materials with smaller diameter are distributed near the separation jacket. On the one hand, it provides kinetic energy to the grinding media near the separation device to improve the grinding efficiency; on the other hand, it avoids clogging caused by the grinding media being distributed near the separation device during separation and improves the separation efficiency.

Description

A ball milling system

Technical field

The invention relates to the technical field of ball milling and grinding, and in particular to a ball milling system.

Background technique

Existing wet ball mill crushing equipment uses a centrifugal separator to separate the grinding media and materials. The centrifugal separator usually uses a separation screen structure for separation, but this separator is prone to clogging on the screen surface during separation, thus causing affect separation efficiency. At the same time, when the grinding media and materials are distributed near the screen during separation, it not only affects the grinding efficiency, but also affects the service life of the screen.

Contents of the invention

The main technical problem solved by the present invention is to provide a ball milling system. In this ball milling system, the grinding medium and materials are distributed near the separation device to prevent clogging and improve the separation efficiency. At the same time, it can also provide kinetic energy for the grinding medium near the separation device and improve the separation efficiency. Grinding efficiency.

In order to solve the above problems, the present invention provides a ball mill system, which includes a grinding barrel and a centrifugal separation device arranged in the grinding barrel, and a driving device that drives the centrifugal separation device to work. A separation jacket outside the inner cylinder, the separation inner cylinder is provided with an inner cylinder separation hole; the separation jacket is provided with a separation hole of the outer jacket that allows materials to enter the separation hole of the inner cylinder, and a medium conveying mechanism that provides the power for the outward movement of the grinding medium when rotating. , the medium transport mechanism includes at least one transport hole or transport groove provided on the surface of the separation outer sleeve, the separation inner cylinder includes a cylindrical inner cylinder, the center of the inner cylinder is axially provided with a receiving separation rotating shaft and is separated from the inner cylinder The inner cylinder storage cavity is connected with the hole.

Furthermore, the length direction of the conveying hole or the conveying groove is consistent with the axial direction of the separation sleeve.

Furthermore, when there are more than two conveying holes or conveying grooves, the outer jacket separation holes and the conveying holes or conveying grooves are evenly distributed on the same circle with the axis of the separation outer jacket as the center.

Furthermore, the length of the conveying hole or conveying groove is the same as that of the jacket separation hole.

Furthermore, the separation inner cylinder includes a free end and a limiting end, and the limiting end is provided with a first step.

Furthermore, the side wall of the inner cylinder storage cavity at the free end is provided with a second step that cooperates with the separation rotating shaft.

Furthermore, the bottom of the inner cylinder storage cavity is provided with a fixing hole for fixing the separation rotating shaft and the separation inner cylinder.

Furthermore, the outer sleeve separation hole and the inner cylinder separation hole are in the form of oblique holes or arc-shaped holes.

Furthermore, the inner sides of both axial ends of the separation sleeve are provided with outer cylinder fixing grooves that match the inner cylinder fixing grooves on the separation inner cylinder, and fixing pins that match the inner cylinder fixing grooves and the outer cylinder fixing grooves after assembly.

The invention discloses a ball mill system, which includes a grinding cylinder and a centrifugal separation device arranged in the grinding cylinder. , the separation inner cylinder is provided with an inner cylinder separation hole; the separation outer sleeve is provided with an outer sleeve separation hole that allows materials to enter the inner cylinder separation hole and a medium conveying mechanism that provides the power for the outward movement of the grinding medium when rotating. When in use, the separation device rotates driven by the separation shaft. The separation shaft is provided with a discharging channel in the axial direction, and the discharging channel is connected with the separation hole of the inner cylinder and the separation hole of the outer sleeve. The medium conveying mechanism accelerates the grinding medium and makes the It can stay away from the separation jacket, and the ground materials with smaller diameters are distributed near the separation jacket. On the one hand, it provides kinetic energy to the grinding media near the separation device to improve grinding efficiency; on the other hand, it avoids clogging caused by the grinding media being distributed near the separation device during separation, and the separation channel is shorter and the separation efficiency is higher. At the same time, the separation device only has an inner cylinder separation hole and an outer jacket separation hole connected to the inner cylinder separation hole. Under the action of the tension between the slurries, etc., when the machine is stopped or initially started, the material will not easily enter the inner cylinder separation hole to avoid Grinding media appears in the discharged material.

Description of the drawings

In order to more clearly explain the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings needed to describe the embodiments or the prior art. Obviously, the drawings in the description only show illustrate certain embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant appendices can also be obtained based on these drawings without exerting creative efforts. picture.

Figure 1 is a schematic structural diagram of a centrifugal separation device along its radial cross-section.

Figure 2 is a schematic structural diagram of an embodiment of a separated inner cylinder.

Figure 3 is a schematic diagram of the axial structure of the separated inner cylinder.

Figure 4 is a schematic cross-sectional structural view of the separated inner cylinder in Figure 3 along the A-A direction.

Fig. 5 is a schematic cross-sectional structural view along the B-B direction in Fig. 3 with a drive shaft.

Figure 6 is a schematic cross-sectional structural view along the E-E direction in Figure 5 .

Figure 7 is a schematic diagram of the distribution of grinding media and materials when the centrifugal separation device is working.

The realization of the purpose, functional features and advantages of the present invention will be further described with reference to the embodiments and the accompanying drawings.

Implementation

The claims of the present invention will be further described in detail below with reference to specific embodiments and figures. Obviously, the described embodiments are only some of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments proposed by those of ordinary skill in the art without creative work shall fall within the scope of protection of the present invention.

It should be understood that in the description of the present invention, all directional indicating terms, such as "up", "down", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the use of the product of the invention. The conventionally placed orientations or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. It is only used to explain the relative positional relationship, movement, etc. of each component as shown in the drawings. When the specific posture changes, the directional indication may also change accordingly.

In addition, descriptions such as "first", "second", etc. in the present invention are only used for distinction and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may be explicitly or implicitly combined with at least one technical feature. In the description of the present invention, "plurality" means at least two, that is, two or more, unless otherwise expressly limited; "at least one" means one or one and more.

As shown in Figures 1 to 6, the present invention provides an embodiment of a ball milling system.

In the present invention, the slurry refers to the mixture of grinding media, grinding materials and liquid during explicit grinding. The grinding media refers to grinding balls.

The ball mill system includes a grinding barrel and a centrifugal separation device arranged in the grinding barrel, as well as a driving device for the operation of the centrifugal separation device. The centrifugal separation device is used to separate the grinding media from the grinding slurry. It includes a separation inner cylinder 2 and The separation outer sleeve 1 is set on the outer part 2 of the separation inner cylinder. The separation inner cylinder 2 is provided with an inner cylinder separation hole 24; the separation outer sleeve 1 is provided with an outer separation hole 11 for allowing materials to enter the inner cylinder separation hole 24 and when rotating The media conveying mechanism provides the energy for the outward movement of the grinding media.

Specifically, the centrifugal separation device is used to separate materials ground into smaller diameters from the separation grinding media from the grinding slurry. That is to say, the materials that meet the requirements are separated from the separation grinding media and larger diameter material particles. The grinding barrel is also provided with a dispersing mechanism, which can be implemented using existing technology. The drive device includes an electromechanical device controlled by a controller.

The medium conveying mechanism includes at least one conveying hole 12 provided on the surface of the separation jacket 1, and the conveying hole 12 can also be provided as a conveying groove. For convenience of explanation, in this embodiment, the delivery hole 12 is taken as an example.

The separation inner cylinder 2 includes a cylindrical inner cylinder, and an inner cylinder storage cavity 23 is provided in the center of the inner cylinder to accommodate the separation rotating shaft 5 and communicate with the separation hole of the inner cylinder.

The length direction of the conveying hole 12 is the same as the axial direction of the separation jacket 1 and the same as the separation hole 11 of the jacket. The outer sleeve separation hole 11 is the same as the inner cylinder separation hole 24 . The conveying holes 12 and the outer jacket separation holes 11 are evenly distributed on the outer surface of the outer separation inner cylinder 2. That is to say, the outer jacket separation holes 11 and the conveying holes 12 are evenly distributed in the same circle with the axis center of the separation outer sleeve 1 as the center. superior.

The separation inner cylinder 2 includes a free end and a limiting end. The limiting end is provided with a first step 26 for limiting the separation outer sleeve 1 . The side wall of the inner cylinder storage cavity 23 at the free end is provided with a second step 27 that matches the separation shaft 5 . The second step 27 can increase the reliability and stability of fixing the separation shaft 5 and the separation inner cylinder 2 .

The bottom of the inner cylinder storage cavity 23 is provided with a fixing hole 20 for fixing the separation rotating shaft 5 and the separation inner cylinder 2. The fixing hole 20 is provided with a fixing bolt 25 to fix the separation rotating shaft 5 and the separation inner cylinder 2.

During installation, the inner sides of both axial ends of the separation sleeve 1 are provided with outer cylinder fixing grooves that match the inner cylinder fixing grooves 21 on the separation inner cylinder 2, and after assembly, there are fixing holes that match the inner cylinder fixing grooves 21 and the outer cylinder fixing grooves. Pin 4. The fixing bolt 25 is fixed to the separation shaft 5 through the fixing hole 20 at the bottom of the inner cylinder receiving cavity 23 .

As shown in Figure 7, when in use, the separation device rotates driven by the separation shaft 5 and rotates in the E direction. The separation shaft 5 is provided with a discharge channel 51 in the axial direction, and the discharge channel 51 is connected with the inner cylinder separation hole 24. Connected with the separation hole 11 of the jacket, the media transport mechanism provides energy for the movement of the grinding medium A. That is, when rotating at high speed, when the grinding medium A and the material are distributed on the surface of the separation device, the transport hole 12 causes the grinding medium A and the material to have a direction along F. Moving away from the separation jacket 1, stratification is formed around the surface of the separation jacket 1, that is, smaller diameter materials are distributed closer to the separation jacket 1, and larger diameter materials and grinding media A are distributed farther away from the separation jacket 1. When rotating at high speed, the outer sleeve separation hole 11, the inner cylinder separation hole 24 and the discharge channel 51 form a negative pressure, so that smaller diameter materials can be sucked into the outer sleeve separation hole 11 and then discharged through the discharge channel 51, while smaller diameter materials can be sucked into the outer sleeve separation hole 11 and then discharged through the discharge channel 51. The large materials and grinding media A are left outside the separation jacket 1 to achieve separation, which can avoid blockage caused by the grinding media being distributed near the separation device during separation, and the separation channel is shorter and the separation efficiency is higher. It can also provide grinding energy for materials with larger diameters and grinding media A, thus improving grinding efficiency.

The inner cylinder separation hole 24 and the outer jacket separation hole 11 can be set as needed. It is best to set one respectively, so that there is only one inner cylinder separation hole 24 and the outer jacket separation hole 11 connected with the inner cylinder separation hole 24. In the slurry Under the action of the tension between the machine and the machine, when the machine is stopped or initially started, the material will not easily enter the separation hole of the inner cylinder to avoid the presence of grinding media in the discharged material.

According to the needs, the outer sleeve separation hole 11 and the inner cylinder separation hole 24 are preferably inclined holes or arc-shaped holes, which can ensure that the outer sleeve separation hole 11 can be entered tangentially. The outer sleeve separation hole 11 can also be used for materials and grinding media that cannot enter. A accelerates.

When the conveying hole 12 adopts a conveying trough, the structure and distribution of the conveying trough and the conveying hole 12 are the same. Its working principle is also the same and will not be described again. If necessary, the medium conveying mechanism can also be arranged so that the conveying holes 12 are spaced apart.

The above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions of the foregoing embodiments. Modifications are made to the recorded technical solutions, or equivalent substitutions are made to some of the technical features, and these modifications or substitutions also cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of each embodiment of the present invention.

Claims (8)

1. The ball milling system comprises a grinding cylinder, a centrifugal separation device arranged in the grinding cylinder and a driving device for driving the centrifugal separation device to work, wherein the centrifugal separation device is used for separating grinding media from grinding slurry; the separation sleeve is provided with a sleeve separation hole for enabling materials to enter the inner barrel separation hole and a medium conveying mechanism for providing grinding medium with outward movement power during rotation, the medium conveying mechanism comprises a conveying hole or a conveying groove arranged on at least one surface of the separation sleeve, the separation inner barrel comprises a cylindrical inner barrel body, and an inner barrel containing cavity for containing the separation rotating shaft and communicating with the inner barrel separation hole is axially arranged in the center of the inner barrel body.

2. The ball milling system of claim 1, wherein: the length direction of the conveying hole or the conveying groove is consistent with the axial direction of the separation sleeve.

3. The ball milling system according to claim 1 or 2, wherein: when the number of the conveying holes or the conveying grooves is more than two, the outer sleeve separating holes and the conveying holes or the conveying grooves are uniformly distributed on the same circle taking the axis of the separating outer sleeve as the circle center.

4. The ball milling system of claim 2, wherein: the length of the conveying hole or the conveying groove is the same as that of the outer sleeve separating hole.

5. The ball milling system of claim 1, wherein: the separation inner barrel comprises a free end and a limiting end, and the limiting end is provided with a first step.

6. The ball milling system of claim 5, wherein: the inner barrel of free end accomodates chamber lateral wall and is equipped with separation pivot complex second step.

7. The ball milling system of claim 1, wherein: the bottom of the inner barrel accommodating cavity is provided with a fixing hole for fixing the separation rotating shaft and the separation inner barrel.

8. The ball milling system of claim 1, wherein: the outer sleeve separating hole and the inner cylinder separating hole are inclined holes or arc holes.