A ball mill centrifugal separation device

Abstract

The present invention is applicable to the technical field of ball milling. The present invention discloses a ball mill centrifugal separation device, comprising a separation inner cylinder and a separation outer cylinder sleeved outside the separation inner cylinder, wherein the separation inner cylinder is provided with an inner cylinder separation hole; the separation outer cylinder is provided with an outer cylinder separation hole for allowing materials to enter the inner cylinder separation hole and a medium conveying mechanism for providing energy for the grinding medium to move outward during rotation. When in use, the separation device rotates under the drive of a separation drive shaft, and the separation drive shaft is axially provided with a discharge channel, and the discharge channel is connected with the inner cylinder separation hole and the outer cylinder separation hole. The medium conveying mechanism accelerates the grinding medium and enables it to move away from the separation outer cylinder, while the ground materials with smaller diameters are distributed near the separation outer cylinder. On the one hand, it provides energy for the grinding media near the separation device to improve the grinding efficiency; on the other hand, it avoids the blockage caused by the grinding media being distributed near the separation device during separation, thereby improving the separation efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of ball milling, and in particular to a ball milling centrifugal separation device. Background Art

[0002] The existing wet ball milling equipment uses a centrifugal separator to separate the grinding media from the material. The centrifugal separator usually uses a separation screen structure for separation, but the separator is prone to blockage on the screen surface during separation, thereby affecting the separation efficiency. At the same time, when the grinding media and the material are distributed near the screen during separation, it affects both the grinding efficiency and the service life of the screen. Summary of the invention

[0003] The main technical problem solved by the present invention is to provide a ball mill centrifugal separation device, which can avoid the blockage caused by the distribution of grinding media and materials near the separation device during separation, thereby improving the separation efficiency, and can also provide energy for the grinding media near the separation device to improve the grinding efficiency.

[0004] In order to solve the above problems, the present invention provides a ball mill centrifugal separation device, which includes a separation inner cylinder and a separation outer cylinder sleeved outside the separation inner cylinder, wherein the separation inner cylinder is provided with an inner cylinder separation hole; the separation outer cylinder is provided with an outer cylinder separation hole for allowing materials to enter the inner cylinder separation hole and a medium conveying mechanism for providing energy for the grinding medium to move outward during rotation.

[0005] Furthermore, the medium conveying mechanism includes at least one conveying hole or conveying groove provided on the surface of the separation jacket.

[0006] Furthermore, the length direction of the conveying hole or conveying groove is consistent with the axial direction of the separation sleeve.

[0007] Furthermore, the separation inner cylinder comprises a cylindrical inner cylinder body, and an inner cylinder receiving chamber for receiving the separation rotating shaft and communicating with the inner cylinder separation hole is provided in the central axial direction of the inner cylinder body.

[0008] Furthermore, when the number of the conveying holes or conveying grooves is more than two, 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.

[0009] Furthermore, the length of the delivery hole or delivery groove is the same as the separation hole of the outer jacket.

[0010] Furthermore, the separation inner cylinder includes a free end and a limiting end, and the limiting end is provided with a first step.

[0011] Furthermore, the side wall of the inner cylinder receiving cavity at the free end is provided with a second step cooperating with the separation shaft.

[0012] Furthermore, a fixing hole for fixing the separation shaft and the separation inner cylinder is provided at the bottom of the inner cylinder receiving chamber.

[0013] Furthermore, the outer shell separation hole and the inner cylinder separation hole are inclined holes or arc-shaped holes.

[0014] Furthermore, the inner sides of the two axial ends of the separation outer sleeve are provided with outer sleeve fixing grooves matching the inner cylinder fixing grooves on the separation inner cylinder and fixing pins matching the inner cylinder fixing grooves and the outer sleeve fixing grooves after assembly.

[0015] The invention discloses a ball mill centrifugal separator, which is used to separate grinding media from grinding slurry. The ball mill centrifugal separator comprises a separation inner cylinder and a separation outer cylinder sleeved outside the separation inner cylinder. The separation inner cylinder is provided with an inner cylinder separation hole; the separation outer cylinder is provided with an outer cylinder separation hole for allowing materials to enter the inner cylinder separation hole and a medium conveying mechanism for providing energy for the grinding media to move outward when rotating. When in use, the separation device rotates under the drive of a separation shaft, and the separation shaft is axially provided with a discharge channel, and the discharge channel is connected with the inner cylinder separation hole and the outer cylinder separation hole. The medium conveying mechanism accelerates the grinding media and enables it to move away from the separation outer cylinder, while the ground materials with a smaller diameter are distributed near the separation outer cylinder. On the one hand, energy is provided for the grinding media near the separation device to improve the grinding efficiency; on the other hand, the grinding media is prevented from being distributed near the separation device during separation, which causes blockage, and the separation channel is shorter, and the separation efficiency is higher. At the same time, the separation device has only one inner cylinder separation hole and an outer cylinder separation hole connected with the inner cylinder separation hole. Under the action of the tension between the slurry, when the machine is stopped or initially started, the material is not easy to enter the inner cylinder separation hole, so as to avoid the grinding media in the discharged material. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the description only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 The invention is a schematic diagram of a radial cross-sectional structure of an embodiment of a ball mill centrifugal separation device.

[0018] Figure 2 It is a schematic structural diagram of a separation inner cylinder embodiment.

[0019] Figure 3 It is a schematic diagram of the separation inner cylinder along its axial structure.

[0020] Figure 4 yes Figure 3Schematic diagram of the cross-sectional structure of the middle separation inner cylinder along the AA direction.

[0021] Figure 5 yes Figure 3 Schematic diagram of the cross-section structure along the BB direction when the middle belt drives the shaft.

[0022] Figure 6 yes Figure 5 Schematic diagram of the cross-sectional structure along the EE direction.

[0023] Figure 7 It is a schematic diagram of the distribution of grinding media and materials when the ball mill centrifugal separation device is working.

[0024] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0025] The following is a further detailed description of the claims of the present invention in conjunction with specific embodiments and drawings. Obviously, the described embodiments are only part of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments proposed by ordinary technicians in this field before making creative work are within the scope of protection of the present invention.

[0026] It should be understood that in the description of the present invention, all directional indication terms, such as "upper", "lower", etc., indicate positions or positional relationships based on the positions or positional relationships shown in the drawings or the positions or positional relationships in which the invented product is usually placed when in use. They 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. They are only used to explain the relative positional relationship, movement, etc. of the components shown in the drawings. When the specific posture changes, the directional indication may also change accordingly.

[0027] In addition, the descriptions such as "first" and "second" 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 of "first" and "second" can explicitly or implicitly indicate at least one of the technical features. In the description of the present invention, "multiple" means at least two, that is, two or more, unless otherwise clearly defined; "at least one" means one or one and more.

[0028] like Figure 1 - Figure 6 As shown, the present invention provides an embodiment of a ball mill centrifugal separation device.

[0029] In the present invention, the slurry refers to the mixture of grinding media, grinding material and liquid during the explicit grinding process. The grinding media refers to grinding balls.

[0030] The ball mill centrifugal separation device is used to separate grinding media from grinding slurry, including a separation inner cylinder 2 and a separation outer cylinder 1 sleeved on the outer side of the separation inner cylinder 2, wherein the separation inner cylinder 2 is provided with an inner cylinder separation hole 24; the separation outer cylinder 1 is provided with an outer cylinder separation hole 11 for allowing materials to enter the inner cylinder separation hole 24 and a medium conveying mechanism for providing energy for the grinding media to move outward when rotating.

[0031] Specifically, the ball mill centrifugal separator is used to separate the material ground into a smaller diameter from the separation grinding medium from the grinding slurry, that is, to separate the material that meets the requirements from the separation grinding medium and the material particles with a larger diameter.

[0032] The medium conveying mechanism includes at least one conveying hole 12 provided on the surface of the separation jacket 1. The conveying hole 12 can also be provided as a conveying groove. For the convenience of description, the conveying hole 12 is taken as an example for description in this embodiment.

[0033] The separation inner cylinder 2 comprises a cylindrical inner cylinder body, and an inner cylinder receiving chamber 23 for receiving the separation rotating shaft 5 and communicating with the inner cylinder separation hole is arranged in the central axial direction of the inner cylinder body.

[0034] The length direction of the delivery hole 12 is the same as the axial direction of the separation jacket 1, and is the same as the jacket separation hole 11. The jacket separation hole 11 is the same as the inner cylinder separation hole 24. The delivery hole 12 and the jacket separation hole 11 are evenly distributed on the outer surface of the separation inner cylinder 2, that is, the jacket separation hole 11 and the delivery hole 12 are evenly distributed on the same circle with the axis of the separation jacket 1 as the center.

[0035] The separation inner cylinder 2 includes a free end and a limiting end, and the limiting end is provided with a first step 26 for limiting the separation outer sleeve 1. The side wall of the inner cylinder receiving cavity 23 at the free end is provided with a second step 27 that cooperates with the separation shaft 5, and the second step 27 can increase the reliability and stability of the fixing of the separation shaft 5 and the separation inner cylinder 2.

[0036] A fixing hole 20 for fixing the separation shaft 5 and the separation inner cylinder 2 is provided at the bottom of the inner cylinder receiving chamber 23 . A fixing bolt 25 is provided in the fixing hole 20 for fixing the separation shaft 5 and the separation inner cylinder 2 .

[0037] During installation, the inner sides of the two axial ends of the separation outer sleeve 1 are provided with outer sleeve fixing grooves matching the inner sleeve fixing grooves 21 on the separation inner sleeve 2 and fixing pins 4 matching the inner sleeve fixing grooves 21 and the outer sleeve fixing grooves after assembly. The fixing bolts 25 are fixed to the separation shaft 5 through the fixing holes 20 at the bottom of the inner sleeve receiving chamber 23.

[0038] like Figure 7As shown, when in use, the separation device rotates under the drive of the separation shaft 5, and rotates along the E direction. The separation shaft 5 is axially provided with a discharge channel 51, and the discharge channel 51 is connected with the inner cylinder separation hole 24 and the outer shell separation hole 11. The medium conveying mechanism provides energy for the movement of the grinding medium A, that is, when the grinding medium A and the material are distributed on the surface of the separation device at high speed, the conveying hole 12 makes the grinding medium A and the material move away from the separation outer shell 1 along the F direction, forming a layer around the surface of the separation outer shell 1, that is, the smaller diameter material is distributed closer to the separation outer shell 1, and the larger diameter material and the grinding medium A are distributed farther from the separation outer shell 1. When rotating at high speed, the outer shell separation hole 11, the inner cylinder separation hole 24 and the discharge channel 51 form a negative pressure, so that the smaller diameter material can be sucked into the outer shell separation hole 11, and then discharged through the discharge channel 51, while the larger diameter material and the grinding medium A remain outside the separation outer shell 1, thereby achieving separation, which can avoid the grinding medium being distributed near the separation device during separation, causing blockage, 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, thereby improving the grinding efficiency.

[0039] The inner cylinder separation hole 24 and the outer cylinder separation hole 11 can be set as needed, and it is best to set one respectively. In this way, there is only one inner cylinder separation hole 24 and the outer cylinder separation hole 11 connected to the inner cylinder separation hole 24. Under the action of tension between slurries, when the machine is shut down or started up, it is not easy for the material to enter the inner cylinder separation hole, thereby avoiding the presence of grinding media in the discharged material.

[0040] As required, the outer shell separation hole 11 and the inner cylinder separation hole 24 are preferably inclined holes or arc holes, which can ensure tangential entry into the outer shell separation hole 11, and the outer shell separation hole 11 can also accelerate the materials and grinding media A that cannot enter.

[0041] When the delivery hole 12 adopts a delivery slot, the delivery slot has the same structure and distribution as the delivery hole 12. Its working principle is also the same, which will not be described in detail. According to needs, the medium delivery mechanism can also be set to be distributed with delivery holes 12 at intervals.

[0042] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents, and these modifications or replacements may cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A ball mill centrifugal separation device, characterized in that: It comprises a separation inner cylinder and a separation outer cylinder sleeved on the outer side of the separation inner cylinder, wherein the separation inner cylinder is provided with an inner cylinder separation hole; the separation outer cylinder is provided with an outer cylinder separation hole for allowing materials to enter the inner cylinder separation hole and a medium conveying mechanism for providing energy for the grinding medium to move outward during rotation; the medium conveying mechanism comprises at least one conveying hole or conveying groove arranged on the surface of the separation outer cylinder, and the separation inner cylinder comprises a cylindrical inner cylinder body, wherein the inner cylinder body is provided with an inner cylinder receiving cavity axially arranged at the center of the inner cylinder body for receiving the separation rotating shaft and communicating with the inner cylinder separation hole.

2. The ball mill centrifugal separation device according to claim 1, characterized in that: The length direction of the conveying hole or conveying groove is consistent with the axial direction of the separation sleeve.

3. The ball mill centrifugal separation device according to claim 1 or 2, characterized in that: When the number of the conveying holes or conveying grooves is more than two, 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.

4. The ball mill centrifugal separation device according to claim 2, characterized in that: The length of the delivery hole or delivery groove is the same as the separation hole of the outer jacket.

5. The ball mill centrifugal separation device according to claim 1, characterized in that: The separation inner cylinder comprises a free end and a limiting end, and the limiting end is provided with a first step.

6. The ball mill centrifugal separation device according to claim 5, characterized in that: The side wall of the inner cylinder receiving cavity at the free end is provided with a second step which cooperates with the separation rotating shaft.

7. The ball mill centrifugal separation device according to claim 1, characterized in that: A fixing hole for fixing the separation rotating shaft and the separation inner cylinder is provided at the bottom of the inner cylinder receiving chamber.

8. The ball mill centrifugal separation device according to claim 1, characterized in that: The outer sleeve separation hole and the inner cylinder separation hole are inclined holes or arc holes.

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