A grinding mill separation structure
By designing guide components and separation structures in the grinding mill, the grinding media are separated by the difference in material mass, which solves the problems of separator wear and blockage in the grinding mill, achieving efficient separation and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- PUHLER (GUANGDONG) SMART NANO TECHNOLOGY CO LTD
- Filing Date
- 2022-08-30
- Publication Date
- 2026-04-21
AI Technical Summary
In existing grinding mills, the grinding media are easily broken under high-speed rotation, which leads to wear and blockage of the gap separator, affecting material flow. Furthermore, the broken grinding media are difficult to separate, reducing the separator's lifespan and increasing maintenance costs.
A separation structure for a grinding mill is designed, including a grinding chamber, a rotor, a separator, and a flow guide. The flow guide is designed to make the material flow form a rotational trajectory away from the separator, and separation is achieved by utilizing the difference in material mass, reducing the impact of the grinding media on the separator. A separation filter plate and separation cylinder structure are adopted to increase the separation area, and a support frame is used to improve stability. The rotor is designed to buffer unfinished grinding material, and the flow guide plate guides and throws out the grinding media.
It effectively reduces separator wear and clogging, extends separator life, reduces maintenance costs, and improves material grinding and separation effects.
Smart Images
Figure CN117654707B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a grinding structure, and more particularly to a grinding machine separation structure. Background Technology
[0002] The material and grinding media are in the grinding chamber of the grinder. The rotor rotates at high speed in the grinding chamber and drives the material and grinding media to perform high-speed circular motion. Under the action of centrifugal force, the grinding media with large mass and coarse material particles are in the outer layer, and the fine material particles are in the inner layer. Due to the high speed, the grinding media will collide and easily produce broken grinding media. Therefore, the inner grinding media and material must be separated by a gap separator. Material smaller than the gap of the separator can pass through the separator smoothly and come out of the chamber. Grinding media larger than the gap of the separator cannot pass through the separator and continue to be ground in the chamber.
[0003] Because some of the crushed grinding media will move in a circular motion along the outer diameter of the slot separator under the rotational force of the rotor, some of the crushed grinding media will continuously collide and rub against the slot separator, and the surface of the slot separator is also prone to wear. Moreover, when the size of the crushed grinding media is almost the same as the size of the slot of the separator, it is easy to get stuck in the slot. As the accumulation gradually increases, the slot of the separator is easily blocked by the crushed grinding media, thus hindering the flow of materials. Summary of the Invention
[0004] The purpose of this invention is to provide a separation structure for a grinding mill to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.
[0005] The solution to the technical problem of this invention is:
[0006] A grinding mill separation structure includes: a grinding cylinder having a grinding chamber inside; a grinding device having a rotatable rotor located within the grinding chamber; a separator connected to one side of the grinding chamber, with a discharge port located directly opposite the separator in the grinding chamber; and a flow guide connected to one side of the separator, the centerline of which is located on the rotation axis of the rotor, and the flow guide extending toward the rotation axis of the rotor in a direction away from the separator.
[0007] This technical solution has at least the following beneficial effects: Both the material and the grinding media are loaded into the grinding chamber, and the rotor rotates within the chamber to grind the material. The material and grinding media form a material flow that rotates around the separator within the grinding chamber. Simultaneously, because the guide element extends towards the rotor's rotation axis in a direction away from the separator, the material flow forms a flow trajectory rotating away from the separator at the position of the guide element. The ground material, being lighter, is located on the inner side of the material flow and can be separated by the separator and discharged from the outlet. The heavier, unground material and grinding media are located on the outer side of the material flow. When the grinding media approaches the separator, due to its greater mass, it easily separates along the flow trajectory formed at the guide element in a direction away from the separator. This reduces the impact and collision of the grinding media on the separator, making the separator less prone to wear and clogging, thereby increasing the separator's service life, reducing maintenance costs, and better ensuring the grinding and separation effect on the material.
[0008] As a further improvement to the above technical solution, the separator includes a separation filter plate with sub-separation holes. The inner wall of the grinding chamber has an installation groove, and the separation filter plate is connected to the installation groove. A separation gap exists between the separation filter plate and the inner bottom wall of the installation groove. The discharge port is located on the inner bottom wall of the installation groove, and the guide member is connected to the side of the separation filter plate away from the discharge port. By directly using the separation filter plate as the structure for separating the material from the grinding media, and installing the separation filter plate on the inner wall of the grinding chamber, the contact friction area between the grinding media and the separation filter plate during rotation is reduced. This better reduces wear on the separation filter plate and clogging of the sub-separation holes. After grinding, the material enters the separation gap through the sub-separation holes on the separation filter plate and is then discharged from the discharge port.
[0009] As a further improvement to the above technical solution, the separator includes a separation cylinder and a separation filter plate. One end of the separation cylinder is connected to the inner wall of the grinding chamber, and the separation filter plate is connected to the other end of the separation cylinder. A separation chamber is formed between the separation cylinder and the separation filter plate. The inner wall of the grinding chamber is provided with a discharge port that communicates with the separation chamber. The side wall of the separation cylinder is provided with a main separation hole that communicates with the separation chamber. The separation filter plate is provided with a sub-separation hole that communicates with the separation chamber. The guide member is connected to the side of the separation filter plate away from the discharge port. After grinding, the material can enter the separation chamber through the main separation hole on the separation cylinder and the sub-separation hole on the separation filter plate, and then be discharged from the discharge port. This increases the contact area for separating the material from the grinding media. When the grinding media approaches the separation cylinder and the separation filter plate, it can be guided by the guide member to throw the grinding media away from the separator.
[0010] As a further improvement to the above technical solution, a support frame is connected to the inner side of the separation cylinder, and the separation filter plate is connected to the end of the support frame. The support frame can improve the structural stability of the separation plate, making it less prone to deformation under the continuous impact of materials and grinding media, thereby further improving the overall service life.
[0011] As a further improvement to the above technical solution, a stirring groove is provided at one end of the rotor near the separator. Multiple slots are circumferentially arranged on the inner wall of the stirring groove around the rotation axis of the rotor. A transition gap is provided between the outer wall of the separation cylinder and the inner wall of the stirring groove, and a grinding gap is provided between the outer wall of the rotor and the inner wall of the grinding chamber. When the rotor rotates, the grinding media and unground materials, due to their large mass, mostly accumulate in the grinding gap. The rotor can buffer and block the grinding media and unground materials, reducing direct impact on the separator and thus reducing wear during use. Some of the grinding media and unground materials that enter the transition gap will also be thrown back into the grinding gap from the slots along the material flow direction. The ground material, due to its light mass, can enter the filtration gap from the slots and then enter the separator. This creates a less material-laden area outside the separator, reducing clogging and replacement frequency, lowering maintenance costs, and better ensuring the grinding and separation quality of the materials.
[0012] As a further improvement to the above technical solution, the flow guide includes a flow-encircling plate connected to the separation filter plate. Multiple flow-encircling plates are arranged in a circumferential array around the rotation axis of the rotor. The outer wall of the flow-encircling plate, located away from the rotation axis of the rotor, serves as its outer wall. The outer wall of the flow-encircling plate extends obliquely towards the rotation axis of the rotor in a direction away from the separation filter plate. The multiple flow-encircling plates are arranged radially, and their outer walls gradually incline in a direction away from the separation cylinder. This allows the rotating flow formed when the material rotates around the flow guide to throw heavier grinding media outwards.
[0013] As a further improvement to the above technical solution, the flow guide includes a flow guide plate connected to the separating filter plate, the flow guide plate extending spirally around the rotation axis of the rotor. When the material rotates, it is guided by the spiral of the flow guide plate, allowing the material to flow around it, thus throwing the heavier grinding media outward.
[0014] As a further improvement to the above technical solution, the grinding device includes a rotary drive component, which is driven and connected to the rotor, and can drive the rotor to rotate. The rotary drive component provides the driving force to rotate the rotor, which enables the rotor to stir and grind the material and grinding media in the separation cylinder, causing the material and grinding media to form a high-speed rotating material flow.
[0015] As a further improvement to the above technical solution, the grinding cylinder includes an outer cylinder, an inner cylinder, and an end cap. The inner cylinder is detachably connected to the outer cylinder, and one end of the outer cylinder and one end of the inner cylinder are both connected to the end cap. The inner cylinder can be removed from the outer cylinder, facilitating its disassembly and replacement. During use, it is not necessary to disassemble the entire inner cylinder from the grinding machine, reducing maintenance difficulty and costs. An installation gap exists between the inner wall of the outer cylinder and the outer wall of the inner cylinder, within which a heating or cooling device can be installed to heat or cool the grinding chamber. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of the present invention, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the separator according to a first embodiment of the present invention, wherein the arrow indicates the direction of material flow;
[0018] Figure 2 This is a schematic diagram of the separator in Embodiment 2 of the present invention, wherein the arrow indicates the direction of material flow;
[0019] Figure 3 This is a front view of Embodiment 2 of the flow guide of the present invention.
[0020] In the attached diagram: 100-grinding cylinder, 110-grinding chamber, 120-discharge port, 130-installation groove, 200-rotor, 210-stirring groove, 220-groove opening, 310-separation filter plate, 320-separation cylinder, 410-flow plate, 420-guide plate. Detailed Implementation
[0021] The following will clearly and completely describe the concept, specific structure, and technical effects of the present invention in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are all within the scope of protection of the present invention. Furthermore, all connection relationships mentioned herein do not simply refer to direct connection of components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this invention can be combined interactively without contradicting each other.
[0022] Reference Figure 1 A grinding mill separation structure includes: a grinding cylinder 100 having a grinding chamber 110 inside; a grinding device having a rotatable rotor 200 located within the grinding chamber 110; a separator connected to one side of the grinding chamber 110, with a discharge port 120 located in front of the separator in the grinding chamber 110; and a flow guide connected to one side of the separator, the centerline of which is located on the rotation axis of the rotor 200, and the flow guide extending toward the rotation axis of the rotor 200 in a direction away from the separator.
[0023] As described above, both the material and the grinding media are loaded into the grinding chamber 110. The rotor 200 rotates within the grinding chamber 110, thereby grinding the material. The material and the grinding media form a material flow that rotates around the separator within the grinding chamber 110. Simultaneously, because the guide element extends towards the rotation axis of the rotor 200 in a direction away from the separator, the material flow forms a flow trajectory around the direction away from the separator at the position of the guide element. The material after grinding is relatively light and located on the inner side of the material flow. It can be separated by the separator and discharged from the outlet 120. The heavier, unground material and the grinding media are located on the outer side of the material flow. When the grinding media approaches the separator, due to its greater mass, it is easily separated along the flow trajectory formed at the guide element in a direction away from the separator. This reduces the impact and collision of the grinding media on the separator, making the separator less prone to wear and clogging, thereby increasing the service life of the separator, reducing maintenance costs, and better ensuring the grinding and separation effect of the material.
[0024] The separator is mainly used to separate materials from grinding media. As an embodiment of the separator, the separator includes a separation filter plate 310 with sub-separation holes. The inner sidewall of the grinding chamber 110 is provided with a mounting groove 130. The separation filter plate 310 is connected to the mounting groove 130. There is a separation gap between the separation filter plate 310 and the inner bottom wall of the mounting groove 130. The discharge port 120 is located on the inner bottom wall of the mounting groove 130. The flow guide is connected to the side of the separation filter plate 310 away from the discharge port 120. The separation filter plate 310 is used directly as the structure for separating the material from the grinding medium. The separation filter plate 310 is installed on the inner wall of the grinding chamber 110, which reduces the contact friction area between the grinding medium and the separation filter plate 310 during rotation. This can better reduce the wear of the separation filter plate 310 and the blockage of the sub-separation holes. After grinding, the material enters the separation gap through the sub-separation holes on the separation filter plate 310, and then is discharged from the separation gap to the discharge port 120.
[0025] like Figure 2As shown in Embodiment 2, the separator includes a separation cylinder 320 and a separation filter plate 310. One end of the separation cylinder 320 is connected to the inner wall of the grinding chamber 110, and the separation filter plate 310 is connected to the other end of the separation cylinder 320. A separation chamber is formed between the separation cylinder 320 and the separation filter plate 310. The inner wall of the grinding chamber 110 is provided with a discharge port 120 that communicates with the separation chamber. The side wall of the separation cylinder 320 is provided with a main separation hole that communicates with the separation chamber. The separation filter plate 310 is provided with a sub-separation hole that communicates with the separation chamber. The flow guide is connected to the side of the separation filter plate 310 away from the discharge port 120. After grinding, the material can enter the separation chamber through the main separation hole on the separation cylinder 320 and the sub-separation hole on the separation filter plate 310, and then be discharged from the discharge port 120. This increases the contact area between the material and the grinding medium. When the grinding medium approaches the separation cylinder 320 and the separation filter plate 310, it can be guided by the guide to the material along the guide to make the grinding medium leave the separator.
[0026] In practical applications, the structure of the main separation hole and the sub-separation hole is not singular. They can be circular or irregularly shaped through holes, or strip-shaped through holes, or even tapered holes that are larger on the outside and smaller on the inside.
[0027] To further improve the deformation resistance of the separation cylinder 320, in this embodiment, a support frame is connected to the inner side of the separation cylinder 320, and the separation filter plate 310 is connected to the end of the support frame. The support frame can improve the structural stability of the separation plate, making the separation plate less prone to deformation under the continuous impact of materials and grinding media, thereby further improving the overall service life.
[0028] In both Embodiment 1 and Embodiment 2 of the separator, a stirring groove 210 is provided at one end of the rotor 200 near the separator. The inner wall of the stirring groove 210 is provided with a plurality of slots 220 around the rotation axis of the rotor 200. Furthermore, in Embodiment 2 of the separator, a transition gap is provided between the outer wall of the separation cylinder 320 and the inner wall of the stirring groove 210, and a grinding gap is provided between the outer wall of the rotor 200 and the inner wall of the grinding chamber 110. When rotor 200 rotates, the grinding media and unground materials, due to their large mass, mostly accumulate in the grinding gap. Rotor 200 can buffer and block the grinding media and unground materials, reducing direct impact on the separator and thus reducing wear on the separator during use. Some of the grinding media and unground materials that enter the transition gap will also be thrown back into the grinding gap from the slot 220 along the material flow direction. The ground material, due to its light mass, can enter the filter gap from the slot 220 and then enter the separator. This creates a less material area on the outside of the separator, reducing clogging and replacement frequency, lowering maintenance costs, and better ensuring the grinding and separation quality of the materials.
[0029] As one embodiment of the flow guide, the flow guide includes a flow-encircling plate 410 connected to the separating filter plate 310. Multiple flow-encircling plates 410 are arranged in a circumferential array around the rotation axis of the rotor 200. The outer wall of each flow-encircling plate 410, located away from the rotation axis of the rotor 200, serves as its outer wall. The outer wall of the flow-encircling plate 410 extends obliquely towards the rotation axis of the rotor 200 in a direction away from the separating filter plate 310. The multiple flow-encircling plates 410 are arranged radially, and their outer walls gradually incline in a direction away from the separating cylinder 320, so that when the material rotates around the flow guide, the resulting swirling flow can throw heavier grinding media outwards.
[0030] like Figure 3 As shown in Embodiment 2, the flow guide includes a flow guide plate 420 connected to the separating filter plate 310, which extends spirally around the rotation axis of the rotor 200. When the material rotates, it is guided by the spiral of the flow guide plate 420 and flows around it, thus throwing the heavier grinding media outward.
[0031] As a further embodiment of the grinding device, the grinding device includes a rotary drive component, which is driven and connected to the rotor 200. The rotary drive component can drive the rotor 200 to rotate. The rotary drive component can be installed on an external structural component or directly installed on the grinding cylinder 100. The rotary drive component provides the driving force to drive the rotor 200 to rotate, so that the rotor 200 can stir and grind the material and grinding media in the separation cylinder 320, causing the material and grinding media to form a high-speed rotating material flow.
[0032] After prolonged use, the inner wall of the grinding chamber 110 will also experience wear. To facilitate maintenance of the grinding cylinder 100, in this embodiment, the grinding cylinder 100 includes an outer cylinder, an inner cylinder, and an end cap. The inner cylinder is detachably connected to the outer cylinder, and one end of the outer cylinder and one end of the inner cylinder are both connected to the end cap. The inner cylinder can be removed from the outer cylinder, facilitating its disassembly and replacement. During use, it is not necessary to disassemble the entire inner cylinder from the grinding machine, reducing maintenance difficulty and costs. An installation gap exists between the inner wall of the outer cylinder and the outer wall of the inner cylinder, within which a heating or cooling device can be installed to heat or cool the grinding chamber 110.
[0033] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.
Claims
1. A separation structure for a grinding mill, characterized in that: include: A grinding cylinder (100) has a grinding chamber (110) inside. A grinding apparatus having a rotatable rotor (200) located within the grinding chamber (110); A separator is connected to one side of the grinding chamber (110), and the grinding chamber (110) has a discharge port (120) located opposite the separator. A flow guide, connected to one side of the separator, has its centerline located on the rotation axis of the rotor (200), and extends toward the rotation axis of the rotor (200) in a direction away from the separator, wherein: The flow guide includes a flow plate (410) connected to the separation filter plate (310). A plurality of flow plates (410) are arranged in a circumferential array around the rotation axis of the rotor (200). The side wall of the flow plate (410) away from the rotation axis of the rotor (200) is the outer wall. The outer wall of the flow plate (410) extends obliquely toward the rotation axis of the rotor (200) in a direction away from the separation filter plate (310). Alternatively, the flow guide may include a flow guide plate (420) connected to the separation filter plate (310), the flow guide plate (420) extending spirally around the rotation axis of the rotor (200).
2. The grinding mill separation structure according to claim 1, characterized in that: The separator includes a separation filter plate (310) with sub-separation holes. The inner wall of the grinding chamber (110) is provided with an installation groove (130). The separation filter plate (310) is connected to the installation groove (130). There is a separation gap between the separation filter plate (310) and the inner bottom wall of the installation groove (130). The discharge port (120) is located on the inner bottom wall of the installation groove (130). The guide is connected to the side of the separation filter plate (310) away from the discharge port (120).
3. The grinding mill separation structure according to claim 1, characterized in that: The separator includes a separation cylinder (320) and a separation filter plate (310). One end of the separation cylinder (320) is connected to the inner wall of the grinding chamber (110), and the separation filter plate (310) is connected to the other end of the separation cylinder (320). A separation chamber is formed between the separation cylinder (320) and the separation filter plate (310). The inner wall of the grinding chamber (110) is provided with a discharge port (120) that communicates with the separation chamber. The side wall of the separation cylinder (320) is provided with a main separation hole that communicates with the separation chamber. The separation filter plate (310) is provided with a sub-separation hole that communicates with the separation chamber. The flow guide is connected to the side of the separation filter plate (310) away from the discharge port (120).
4. The grinding mill separation structure according to claim 3, characterized in that: The inner side of the separation cylinder (320) is connected to a support frame, and the separation filter plate (310) is connected to the end of the support frame.
5. The grinding mill separation structure according to claim 3, characterized in that: The rotor (200) is provided with a stirring groove (210) at one end near the separator. The inner wall of the stirring groove (210) is provided with a plurality of slots (220) around the rotation axis of the rotor (200) in the circumferential direction. A transition gap is provided between the outer wall of the separator (320) and the inner wall of the stirring groove (210). A grinding gap is provided between the outer wall of the rotor (200) and the inner wall of the grinding chamber (110).
6. The grinding mill separation structure according to claim 1, characterized in that: The grinding device includes a rotary drive component, which is connected to the rotor (200) and can drive the rotor (200) to rotate.
7. The grinding mill separation structure according to claim 1, characterized in that: The grinding cylinder (100) includes an outer cylinder, an inner cylinder, and an end cap. The inner cylinder is detachably connected to the outer cylinder. One end of the outer cylinder and one end of the inner cylinder are both connected to the end cap. There is an installation gap extending circumferentially around the inner cylinder between the inner sidewall of the outer cylinder and the outer sidewall of the inner cylinder. The grinding cavity (110) is formed between the inner cylinder and the end cap.
Citation Information
Patent Citations
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