High-precision grinding device for hafnium oxide production

Abstract

The utility model belongs to the field of hafnium oxide production, especially relate to a high-precision grinding device for hafnium oxide production. The utility model discloses a kind of high-precision grinding device for hafnium oxide production that can flexibly adjust the spacing of grinding disc, including tank body, feed hopper, motor, rotating shaft, stirring rod, upper grinding plate, lower grinding plate etc.;The center of tank body bottom is provided with feed inlet, tank body top is provided with feed hopper, the top of tank body is provided with motor, the output shaft of motor bottom is connected with rotating shaft, rotating shaft extends into tank body, rotating shaft side is provided with a circle of stirring rod. The utility model adjusts the height of lower grinding plate by fixed structure, so that the gap between lower grinding plate and upper grinding plate changes, so that the equipment can grind raw materials of different fineness;Motor drives rotating shaft and stirring rod to rotate, and rotating stirring rod can scatter raw materials in tank body.

Description

Technical Field

[0001] This utility model belongs to the field of hafnium oxide production, and in particular relates to a high-precision grinding device for hafnium oxide production. Background Technology

[0002] Hafnium oxide, a rare metal oxide with high melting point, high hardness, excellent dielectric properties, and chemical stability, plays an irreplaceable role in high-precision fields such as semiconductor gate insulating layers, nuclear reactor control materials, aerospace high-temperature components, and optical coatings. Its performance is directly related to the uniformity and fineness of the powder particle size, and it is essential to avoid introducing impurities during the grinding process. This places extremely high demands on the precision, purity, and efficiency of hafnium oxide grinding equipment.

[0003] In the high-precision grinding process of hafnium oxide, the grinding disc type grinding device has become one of the mainstream equipment due to its advantages such as high grinding efficiency and good powder particle size uniformity. Its core working principle is that two relatively rotating grinding discs form a grinding gap. After the material enters the gap, it is refined under the squeezing and shearing action of the grinding discs.

[0004] However, the existing grinding disc type grinding device has obvious structural defects: most grinding discs are fixed, and the distance between the two grinding discs is fixed. On the one hand, after the hafnium oxide raw material is crushed and pretreated, some large particles or lumps may still remain. Since the distance between the grinding discs is fixed and usually set to be narrow to meet the needs of high-precision grinding, these large hafnium oxide particles have difficulty entering the grinding area between the two grinding discs and are prone to accumulating and clogging at the grinding disc inlet. This not only affects the continuity of production, but may also cause grinding disc wear and increased equipment vibration due to the compression of accumulated materials, thus reducing the service life of the equipment. In addition, the fixed grinding disc also has the problem of poor adaptability: when it is necessary to produce hafnium oxide powder with different particle size specifications, it is necessary to replace the grinding disc components with different spacing, which is cumbersome and time-consuming. Frequent disassembly can easily lead to a decrease in the installation accuracy of the grinding disc, which in turn affects the particle size uniformity of the ground powder.

[0005] Therefore, there is an urgent need to develop a high-precision grinding device for hafnium oxide production that can flexibly adjust the spacing between grinding discs. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a high-precision grinding device for hafnium oxide production that can flexibly adjust the spacing between grinding discs.

[0007] The technical solution is as follows: A high-precision grinding device for hafnium oxide production includes a tank, a feed hopper, a motor, a rotating shaft, a stirring rod, an upper grinding plate, a lower grinding plate, a fixing structure, and a discharge frame. A feed inlet is located at the center of the bottom of the tank, and a feed hopper is located at the top of the tank. A motor is located at the top of the tank, and a rotating shaft is connected to the output shaft at the bottom of the motor. The rotating shaft extends into the tank, and a ring of stirring rods is arranged on the side of the rotating shaft. An upper grinding plate is concentrically installed at the bottom of the tank, and a discharge frame is connected to the bottom edge of the upper grinding plate. A discharge port is located at the bottom of the discharge frame. The rotating shaft passes through the feed inlet and is connected to the lower grinding plate via the fixing structure. The fixing structure is used to fix lower grinding plates of different heights. The lower grinding plate is directly below the upper grinding plate, and there is a gap between the lower and upper grinding plates. The discharge frame communicates with this gap, and the bottom of the discharge frame is supported by a support rod.

[0008] As a further preferred embodiment, the fixing structure includes a pin and a spring. The lower grinding plate is vertically slidably connected to the rotating shaft. The lower part of the rotating shaft has two rows of symmetrically arranged insertion holes. The lower part of the rotating shaft has pins slidably arranged. A spring connects the pin and the rotating shaft. The end of the rotating shaft is inserted into the insertion hole.

[0009] As a further preferred option, the bottom of the tank body is a tapered shape that tapers downwards.

[0010] As a further preferred option, both the upper and lower grinding plates have inclined grinding grooves on their grinding surfaces.

[0011] As a further preferred embodiment, a conical plate is also included, with an upwardly recessed conical plate provided at the lower part of the rotating shaft, the conical plate being located at the feed inlet, and a gap existing between the conical plate and the feed inlet.

[0012] As a further preferred option, an annular inclined plate is also included, with an annular inclined plate provided at the bottom of the discharge frame.

[0013] As a further preferred option, the annular inclined plate above the discharge port has a notch, and the discharge port is located at the thinnest part of the annular inclined plate.

[0014] As a further preferred option, a brush plate is also included, with the bottom of the rotating shaft detachably equipped with a brush plate.

[0015] This invention has the following advantages: The height of the lower grinding plate is adjusted by a fixed structure, changing the gap between the lower and upper grinding plates, allowing the equipment to grind raw materials of varying fineness; the motor drives the rotating shaft and stirring rod to rotate, and the rotating stirring rod disperses the raw materials in the tank; the conical plate allows the raw materials to slowly disperse and enter between the lower and upper grinding plates, thereby improving grinding quality; the upper surface of the annular inclined plate is sloped, and the raw materials on the annular inclined plate are concentrated at the discharge port, thus reducing raw material residue in the equipment. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a three-dimensional structural diagram of the internal structure of this utility model.

[0018] Figure 3 This utility model Figure 2 The main view.

[0019] Figure 4 This is a three-dimensional structural diagram of the fixed structure of this utility model.

[0020] Figure 5 This is a three-dimensional structural diagram of the upper and lower grinding plates of this utility model.

[0021] The labels in the diagram are as follows: 1-Tank body, 1a-Inlet, 2-Feed hopper, 3-Motor, 4-Rotating shaft, 4a-Conical plate, 5-Stirring rod, 6-Upper grinding plate, 7-Lower grinding plate, 71-Insertion hole, 72-Pin, 73-Spring, 8-Discharge frame, 8a-Discharge port, 9-Annular inclined plate, 10-Brush plate. Detailed Implementation

[0022] The technical solution will be further described below with reference to specific embodiments. It should be noted that the terms "up," "down," "left," and "right" used in this document refer only to the position of the structure shown in the corresponding drawings. The serial numbers assigned to components in this document, such as "first," "second," etc., are only used to distinguish the described objects and have no sequential or technical meaning. Unless otherwise specified, terms such as "connection" and "linkage" in this application include both direct and indirect connections (linkages).

[0023] Example: A high-precision grinding apparatus for hafnium oxide production, such as... Figures 1-5As shown, the system includes a tank body 1, a feed hopper 2, a motor 3, a rotating shaft 4, a stirring rod 5, an upper grinding plate 6, a lower grinding plate 7, a fixing structure, and a discharge frame 8. A feed inlet 1a is located at the center of the bottom of the tank body 1. Raw materials in the tank body 1 enter the grinding position through the feed inlet 1a. The bottom of the tank body 1 is a downward-retracting cone shape to prevent raw material residue from remaining inside. A feed hopper 2 for adding raw materials to the tank body 1 is located at the top of the tank body 1. The feed hopper 2 is downward-retracting. A motor 3 is bolted to the top of the tank body 1. A rotating shaft 4 is connected to the output shaft at the bottom of the motor 3 via a coupling. The rotating shaft 4 extends into the tank body 1. A ring of stirring rods 5 is located on the side of the rotating shaft 4. The motor 3 drives the stirring rods... The stirring rod 5 rotates to break up the raw materials in the tank 1 to prevent them from clumping. An upper grinding plate 6 is concentrically fixed at the bottom of the tank 1. An annular discharge frame 8 is connected to the bottom edge of the upper grinding plate 6. The bottom of the discharge frame 8 has a discharge port 8a. The ground raw materials are discharged through the discharge port 8a. The rotating shaft 4 passes through the feed port 1a and is connected to the lower grinding plate 7 through a fixing structure. The fixing structure is used to fix the lower grinding plates 7 at different heights. The lower grinding plate 7 is directly below the upper grinding plate 6. The grinding surfaces of both the upper grinding plate 6 and the lower grinding plate 7 are inclined grinding grooves. There is a gap between the lower grinding plate 7 and the upper grinding plate 6. The discharge frame 8 communicates with this gap. The bottom of the discharge frame 8 is supported by a support rod.

[0024] A high-precision grinding device for hafnium oxide production: When grinding raw materials, the height of the lower grinding plate 7 is adjusted according to the coarseness of the raw materials and the required fineness of the raw materials through a fixed structure. Then, the motor 3 drives the rotating shaft 4, stirring rod 5 and lower grinding plate 7 to rotate. At this time, the raw materials are added into the tank 1 from the feed hopper 2. The rotating stirring rod 5 can break up the raw materials in the tank 1. The broken raw materials enter the space between the upper grinding plate 6 and the lower grinding plate 7 through the feed port 1a. The rotating lower grinding plate 7 cooperates with the upper grinding plate 6 to grind the raw materials. After grinding, the raw materials fall into the discharge frame 8 through the gap between the lower grinding plate 7 and the upper grinding plate 6, and then are discharged out of the equipment through the discharge port 8a. The grinding surfaces of the upper grinding plate 6 and the lower grinding plate 7 are both inclined grinding grooves, which can reduce the amount of raw materials stuck on the upper grinding plate 6 and the lower grinding plate 7. After the raw materials are ground, the motor 3 is stopped.

[0025] like Figure 4As shown, the fixing structure includes a pin 72 and a spring 73. The lower grinding plate 7 is vertically slidably connected to the rotating shaft 4. The lower part of the rotating shaft 4 has two rows of symmetrically arranged insertion holes 71. The lower part of the rotating shaft 4 has pins 72 slidably arranged. The pins 72 are connected to the rotating shaft 4 by a spring 73. The end of the rotating shaft 4 is inserted into the insertion holes 71 at the same height. When it is necessary to change the height of the lower grinding plate 7, the pins 72 are first pulled out of the insertion holes 71. Then, the lower grinding plate 7 is moved up or down to change its height, so that the gap between the lower grinding plate 7 and the upper grinding plate 6 changes. After the height of the lower grinding plate 7 is adjusted, the pins 72 are released, and the spring 73 returns to its original position, causing the pins 72 to be inserted back into the insertion holes 71 to fix the lower grinding plate 7.

[0026] like Figure 2 and Figure 3 As shown, it also includes a conical plate 4a. The lower part of the rotating shaft 4 is provided with an upwardly recessed conical plate 4a. The conical plate 4a is located at the feed inlet 1a, and there is a gap between the conical plate 4a and the feed inlet 1a. The raw material enters the space between the lower grinding plate 7 and the upper grinding plate 6 through the gap between the conical plate 4a and the feed inlet 1a for grinding. Because the conical plate 4a allows the raw material to enter the space between the lower grinding plate 7 and the upper grinding plate 6 slowly and dispersedly, the grinding quality is improved.

[0027] like Figure 2 and Figure 3 As shown, it also includes an annular inclined plate 9. An annular inclined plate 9 is provided at the bottom of the discharge frame 8. The annular inclined plate 9 above the discharge port 8a has a notch. The discharge port 8a is located at the thinnest part of the annular inclined plate 9. The ground raw material falls on the annular inclined plate 9. Because the upper surface of the annular inclined plate 9 is inclined, the raw material on the annular inclined plate 9 is concentrated at the discharge port 8a and discharged, thereby reducing the amount of raw material residue in the equipment.

[0028] like Figures 2-4 As shown, it also includes a brush plate 10, which is detachably mounted on the bottom of the rotating shaft 4. When it is necessary to clean the upper grinding plate 6 and the lower grinding plate 7, the brush plate 10 is first removed, and then the lower grinding plate 7 is removed for cleaning. At the same time, the brush plate 10 is moved upward to contact the bottom of the upper grinding plate 6. Then, the brush plate 10 is rotated by controlling the rotating shaft 4 to clean the bottom of the upper grinding plate 6. After the upper grinding plate 6 and the lower grinding plate 7 are cleaned, the brush plate 10 is removed, and then the lower grinding plate 7 is installed, and then the brush plate 10 is installed again.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A high-precision grinding apparatus for hafnium oxide production, characterized in that, The device includes a tank (1), a feed hopper (2), a motor (3), a rotating shaft (4), a stirring rod (5), an upper grinding plate (6), a lower grinding plate (7), a fixing structure, and a discharge frame (8). A feed inlet (1a) is located at the center of the bottom of the tank (1). A feed hopper (2) is located at the top of the tank (1). A motor (3) is located at the top of the tank (1). A rotating shaft (4) is connected to the output shaft at the bottom of the motor (3). The rotating shaft (4) extends into the tank (1). A stirring rod (5) is arranged around the side of the rotating shaft (4). The bottom is concentrically mounted with an upper grinding plate (6), and the bottom edge of the upper grinding plate (6) is connected to a discharge frame (8). The bottom of the discharge frame (8) is provided with a discharge port (8a). The rotating shaft (4) passes through the feed port (1a) and is connected to the lower grinding plate (7) through a fixing structure. The fixing structure is used to fix the lower grinding plates (7) of different heights. The lower grinding plate (7) is directly below the upper grinding plate (6). There is a gap between the lower grinding plate (7) and the upper grinding plate (6). The discharge frame (8) is connected to the gap. The bottom of the discharge frame (8) is supported by a support rod.

2. The high-precision grinding apparatus for hafnium oxide production as described in claim 1, characterized in that, The fixed structure includes a pin (72) and a spring (73). The lower grinding plate (7) is vertically slidably connected to the rotating shaft (4). The lower part of the rotating shaft (4) is symmetrically provided with two rows of insertion holes (71). The lower part of the rotating shaft (4) is slidably provided with pins (72). A spring (73) is connected between the pins (72) and the rotating shaft (4). The end of the rotating shaft (4) is inserted into the insertion hole (71).

3. The high-precision grinding apparatus for hafnium oxide production as described in claim 1, characterized in that, The bottom of the tank (1) is a tapered shape that tapers downwards.

4. The high-precision grinding apparatus for hafnium oxide production as described in claim 1, characterized in that, The grinding surfaces of the upper grinding plate (6) and the lower grinding plate (7) are both inclined grinding grooves.

5. The high-precision grinding apparatus for hafnium oxide production as described in claim 1, characterized in that, It also includes a conical plate (4a), and the lower part of the rotating shaft (4) is provided with an upwardly recessed conical plate (4a), the conical plate (4a) is located at the feed inlet (1a), and there is a gap between the conical plate (4a) and the feed inlet (1a).

6. The high-precision grinding apparatus for hafnium oxide production as described in claim 1, characterized in that, It also includes an annular inclined plate (9), and an annular inclined plate (9) is provided at the bottom of the discharge frame (8).

7. The high-precision grinding apparatus for hafnium oxide production as described in claim 6, characterized in that, The annular inclined plate (9) above the discharge port (8a) has a notch, and the discharge port (8a) is located at the thinnest part of the annular inclined plate (9).

8. The high-precision grinding apparatus for hafnium oxide production as described in claim 1, characterized in that, It also includes a brush plate (10), and the bottom of the rotating shaft (4) is detachably equipped with a brush plate (10).

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