A homogenizing device for mixing metal-ceramic powders

Abstract

This utility model relates to the field of metal-ceramic powder processing technology and discloses a uniform material mixing device for metal-ceramic powders, including a drum. An auxiliary component includes multiple mounting grooves on the inner wall of the drum, each groove containing an inner liner plate. The outer wall of each liner plate has multiple positioning grooves, and the inner wall of each positioning groove has a protruding plate. One end of each protruding plate has a connecting rod and a piston. The inner wall of each positioning groove has a through groove, and the other end of the through groove has a hydraulic chamber. The inner wall of the hydraulic chamber has multiple cavities, with pressure valves and check valves at the inlet and outlet of each cavity. A spring is installed inside each cavity, and one end of each spring has a pressure plate. This utility model, by installing multiple flexibly retractable protruding plates on the inner side of the liner plate, provides cushioning when the grinding balls descend, reducing the impact on the liner plate and improving its service life. Simultaneously, the protruding plates are connected by hydraulic oil, causing the remaining protruding plates to bounce and disperse the surrounding metal-ceramic powder when impacted by the grinding balls, improving processing efficiency and uniformity.

Description

Technical Field

[0001] This utility model relates to the field of metal ceramic powder processing technology, specifically to a uniform mixing device for metal ceramic powder. Background Technology

[0002] Cermet powder is a composite powder made by mixing metallic and ceramic materials (or materials capable of producing ceramics), combining the toughness of metals with the high hardness, wear resistance, and high-temperature resistance of ceramics. Due to its unique properties, such as high hardness, high wear resistance, high temperature resistance, oxidation resistance, and good toughness, cermet powder plays an important role in many fields. It can not only significantly improve the performance of materials and components but also extend service life and reduce maintenance costs, thus possessing broad application prospects and significant economic value.

[0003] Mixing and homogenizing metal-ceramic powders are key steps in the preparation of high-performance metal-ceramic materials. The purpose is to ensure that the metal and ceramic powders are uniformly distributed at the microscale, thereby improving the consistency of material performance.

[0004] When using a ball mill to homogenize cermet powder, the mechanical force applied by the grinding balls to the powder during the ball milling process may increase the surface energy of the particles and generate static electricity during friction, thereby promoting particle agglomeration. This makes the cermet powder particles prone to agglomeration, resulting in poor powder dispersibility. Furthermore, the high hardness of cermet powder requires the use of high-strength grinding balls, leading to greater wear on the liner. Utility Model Content

[0005] The purpose of this invention is to provide a homogenizing device for mixing metal ceramic powders, in order to solve the problems mentioned in the background art, where the mechanical force applied by the grinding balls to the powder during homogenization of metal ceramic powders may increase the surface energy of the particles, and static electricity may be generated during friction, leading to agglomeration of metal ceramic powders and affecting the processing quality. Furthermore, the high-strength grinding balls used for metal ceramic powders cause significant wear to the internal liner of the ball mill.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a uniform material mixing device for metal-ceramic powder, comprising a drum, wherein an auxiliary component for assisting in uniform material mixing of metal-ceramic powder is provided inside the drum, the auxiliary component includes multiple mounting grooves provided on the inner wall of the drum, each of the multiple mounting grooves being provided with an inner liner plate, the outer wall of the inner liner plate being provided with multiple positioning grooves, the inner wall of each of the multiple positioning grooves being provided with a protruding plate, one end of the protruding plate being provided with a connecting rod and a piston, the inner wall of the positioning groove being provided with a through groove, and the other end of the through groove being provided with a hydraulic chamber;

[0007] The hydraulic chamber has multiple cavities on its inner wall. Pressure valves and check valves are installed at the inlet and outlet of each cavity. Springs are installed inside each cavity, and a pressure plate is installed at one end of each spring.

[0008] Preferably, a plurality of the mounting slots are arranged in an array on the inner wall of the roller, the inner liner is located in the mounting slot and is connected to the inner wall of the mounting slot by bolts, and the inner liner is parallel to the mounting slot.

[0009] Preferably, a plurality of the positioning grooves are arranged in a ring array on the outer wall of the inner liner plate, the protruding plate is located in the positioning groove and is slidably connected to the inner wall of the positioning groove, one end of the connecting rod is connected to the protruding plate, and the other end extends into the through groove and is connected to the piston.

[0010] Preferably, the end of the through groove away from the positioning groove is connected to the interior of the hydraulic chamber, the hydraulic chamber is filled with hydraulic oil, and the hydraulic oil flows into multiple through grooves and acts on the piston.

[0011] Preferably, a plurality of the cavity arrays are distributed on the inner wall of the hydraulic chamber, the pressure valve is located at the inlet of the cavity and can be opened by the oil pressure, and the check valve is located at the outlet of the cavity and can only be opened in one direction to the outside of the cavity.

[0012] Preferably, the pressure plate is located inside the cavity and is slidably connected to the inner wall of the cavity, and the two ends of the spring are respectively connected to the inner wall of the cavity and the pressure plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. By changing the inner liner plate to an embedded split structure and setting multiple retractable protrusions on its inner side, the protrusions are supported by hydraulic oil inside the inner liner plate and are connected to each other. When the grinding ball falls onto one of the protrusions, the protrusion retracts due to the impact of falling, and the other protrusions in the same row are ejected outward through the hydraulic connection. The protrusions also push and spread the metal ceramic powder covering them, effectively avoiding the agglomeration of powder particles and improving the efficiency and uniformity of metal ceramic powder processing. At the same time, the retractable protrusions can also buffer when the grinding ball falls, reducing the impact on the liner plate and improving the service life of the liner plate.

[0015] 2. By reserving multiple cavities in the inner wall of the hydraulic chamber inside the liner, and the inlet of the cavity is controlled by a pressure valve, when multiple convex plates are subjected to the load of falling grinding balls, the hydraulic pressure in the hydraulic chamber increases and cannot be released. The pressure valve is opened smoothly, allowing the oil to be temporarily discharged into the cavity, ensuring the normal use of the hydraulic chamber and convex plates, and ensuring the normal operation of the auxiliary structure.

[0016] This invention uses multiple flexible and retractable protrusions installed on the inner side of the liner to buffer the impact of the grinding balls as they come down, thereby reducing the impact on the liner and extending its service life. At the same time, the protrusions are connected by hydraulic oil, which causes the remaining protrusions to bounce and disperse the surrounding metal and ceramic powder when impacted by the grinding balls, thus improving the processing efficiency and uniformity. Attached Figure Description

[0017] Figure 1 This is an overall isometric view of the present invention;

[0018] Figure 2 This is a cross-sectional view of the roller of this utility model;

[0019] Figure 3 This is a diagram showing the split structure of the bottom area of ​​the roller in this utility model;

[0020] Figure 4 This is a cross-sectional view showing the distribution of the inner lining plates of the roller according to this utility model;

[0021] Figure 5 This is an enlarged view of part A of this utility model.

[0022] In the diagram: 1. Roller; 2. Mounting groove; 3. Liner plate; 301. Positioning groove; 4. Protruding plate; 401. Connecting rod; 402. Piston; 5. Through groove; 6. Hydraulic chamber; 7. Cavity; 701. Pressure valve; 702. Check valve; 8. Spring; 9. Pressure plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] All devices in this application adopt conventional models in the prior art, and the control method is through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art, which is common knowledge in the field, so this application will not explain it in detail.

[0025] Please see the appendix Figure 1-4As shown, a homogenizing device for mixing metal-ceramic powder includes a drum 1. The drum 1 has an auxiliary component inside for assisting in homogenizing the metal-ceramic powder. The auxiliary component includes multiple mounting grooves 2 on the inner wall of the drum 1 for positioning an inner liner plate 3 and ensuring the inner liner plate 3 is embedded and parallel to the inner wall of the drum 1. Each mounting groove 2 contains an inner liner plate 3, and the outer wall of the inner liner plate 3 has multiple positioning grooves 301 for receiving and positioning a protruding plate 4. 4. Angle positioning during extension and retraction: The inner walls of multiple positioning grooves 301 are provided with protruding plates 4. The protruding plates 4 can bear the grinding balls when they fall. At the same time, the grinding balls can be moved by the protruding plates 4 when the roller 1 rotates. One end of the protruding plate 4 is provided with a connecting rod 401 and a piston 402. The inner wall of the positioning groove 301 is provided with a through groove 5, which communicates with the hydraulic chamber 6, so that the oil in the hydraulic chamber 6 can flow into the through groove 5 to support the piston 402. The other end of the through groove 5 is provided with a hydraulic chamber 6, which is filled with hydraulic oil.

[0026] Multiple mounting slots 2 are arrayed on the inner wall of the roller 1. The inner liner 3 is located in the mounting slot 2 and is connected to the inner wall of the mounting slot 2 by bolts. The inner liner 3 is parallel to the mounting slot 2. Multiple positioning slots 301 are arrayed in a ring on the outer wall of the inner liner 3. The protruding plate 4 is located in the positioning slot 301 and is slidably connected to the inner wall of the positioning slot 301. One end of the connecting rod 401 is connected to the protruding plate 4, and the other end extends into the through slot 5 and is connected to the piston 402. The end of the through slot 5 away from the positioning slot 301 is connected to the inside of the hydraulic chamber 6. The hydraulic chamber 6 is filled with hydraulic oil, and the hydraulic oil flows into the multiple through slots 5 and acts on the piston 402.

[0027] In this embodiment: the hydraulic fluid in the hydraulic chamber 6 generates pressure, and the piston 402, in conjunction with the connecting rod 401, pushes the convex plate 4 out of the positioning groove 301, while supporting the convex plate 4. When the drum 1 is driven to rotate by the motor, the grinding ball is pushed by the two sides of the convex plate 4 to follow the rotation of the drum 1. When the grinding ball falls to the inner liner plate 3, it is supported by the convex plate 4. The positioning groove 301 causes the convex plate 4 to contract and buffer the impact force, reducing the impact on the inner liner plate 3. At the same time as the convex plate 4 contracts, it works with the piston 402 to squeeze the oil, so that the oil flows into the remaining through grooves 5. The increased pressure causes the convex plate 4 to extend outward and bounce up, pushing and dispersing the surrounding metal ceramic powder, improving the uniformity of the metal ceramic powder particle mixing, effectively avoiding particle agglomeration, and improving processing efficiency.

[0028] Example 2: This example is an improvement on Example 1. For details, please refer to [link / reference]. Figures 3-5The hydraulic chamber 6 has multiple cavities 7 on its inner wall, which are used as temporary storage spaces for hydraulic fluid. Pressure valves 701 and check valves 702 are respectively installed at the inlet and outlet of the multiple cavities 7. When the pressure in the hydraulic chamber 6 exceeds the set value of pressure valve 701, pressure valve 701 can be opened, so that the hydraulic fluid in the hydraulic chamber 6 will flow into the cavity 7 to reduce the pressure. Check valve 702 is used to control the discharge of hydraulic fluid in the cavity 7. A spring 8 is installed inside the cavity 7 to push and support the pressure plate 9. The pressure plate 9 is installed at one end of the spring 8.

[0029] Multiple cavities 7 are arranged in a ring array on the inner wall of the hydraulic chamber 6. The pressure valve 701 is located at the inlet of the cavity 7 and can be opened by the oil pressure. The check valve 702 is located at the outlet of the cavity 7 and can only be opened in one direction to the outside of the cavity 7. The pressure plate 9 is located inside the cavity 7 and is slidably connected to the inner wall of the cavity 7. The two ends of the spring 8 are connected to the inner wall of the cavity 7 and the pressure plate 9, respectively.

[0030] In this embodiment: when the convex plates 4 in the same row are simultaneously subjected to the downward pressure of the grinding balls, the pistons 402 of multiple convex plates 4 squeeze the hydraulic chamber 6, preventing the oil from flowing and spreading, which leads to an increase in the pressure inside the hydraulic chamber 6. When the pressure reaches the set value of the pressure valve 701, it is controlled to open, so that the oil can flow into the cavity 7 for temporary storage, reducing the oil pressure. After the grinding balls move away, the spring 8 and the pressure plate 9 work together to squeeze the oil in the cavity 7 through the one-way valve 702 to discharge it, so that the convex plates 4 can extend and retract to reset, ensuring that the pressure inside the hydraulic chamber 6 remains stable and ensuring the normal use of the convex plates 4.

[0031] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A homogenizing device for mixing cermet powder, comprising a roller (1), an auxiliary assembly for assisting in homogenizing the cermet powder is arranged inside the roller (1), characterized in that: The auxiliary component includes multiple mounting slots (2) disposed on the inner wall of the roller (1), each of the multiple mounting slots (2) being provided with an inner liner plate (3), the outer wall of the inner liner plate (3) being provided with multiple positioning slots (301), the inner wall of each of the multiple positioning slots (301) being provided with a protruding plate (4), one end of the protruding plate (4) being provided with a connecting rod (401) and a piston (402), the inner wall of the positioning slot (301) being provided with a through groove (5), and the other end of the through groove (5) being provided with a hydraulic chamber (6); The hydraulic chamber (6) has multiple cavities (7) on its inner wall. Pressure valves (701) and check valves (702) are respectively installed at the inlet and outlet of the multiple cavities (7). A spring (8) is installed inside the cavity (7), and a pressure plate (9) is installed at one end of the spring (8).

2. The homogenizing device for mixing cermet powder according to claim 1, characterized in that: Multiple mounting slots (2) are arrayed on the inner wall of the roller (1). The inner liner (3) is located in the mounting slot (2) and is connected to the inner wall of the mounting slot (2) by bolts. The inner liner (3) is parallel to the mounting slot (2).

3. The homogenizing device for mixing cermet powder according to claim 1, characterized in that: Multiple positioning grooves (301) are arranged in a ring array on the outer wall of the inner liner (3). The protruding plate (4) is located in the positioning groove (301) and is slidably connected to the inner wall of the positioning groove (301). One end of the connecting rod (401) is connected to the protruding plate (4), and the other end extends into the through groove (5) and is connected to the piston (402).

4. The homogenizing device for mixing cermet powder according to claim 3, characterized in that: The end of the through groove (5) away from the positioning groove (301) is connected to the interior of the hydraulic chamber (6). The hydraulic chamber (6) is filled with hydraulic oil, and the hydraulic oil flows into multiple through grooves (5) and acts on the piston (402).

5. The homogenizing device for mixing cermet powder according to claim 1, characterized in that: Multiple cavities (7) are arranged in a ring array on the inner wall of the hydraulic chamber (6). The pressure valve (701) is located at the inlet of the cavity (7) and can be opened by controlling the oil pressure. The check valve (702) is located at the outlet of the cavity (7) and can only be opened to the outside of the cavity (7).

6. The homogenizing device for mixing cermet powder according to claim 5, characterized in that: The pressure plate (9) is located inside the cavity (7) and is slidably connected to the inner wall of the cavity (7). The two ends of the spring (8) are respectively connected to the inner wall of the cavity (7) and the pressure plate (9).

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