Raw material grinding device for polishing liquid production

Abstract

This invention discloses a raw material grinding device for polishing slurry production, belonging to the field of polishing slurry raw material grinding technology. The invention includes a grinding tank rotatably mounted on a support frame and an outer ring pipe fixedly mounted on the support frame. The grinding tank has symmetrical inner linings at both ends, with the inner diameter of the linings gradually decreasing from both ends towards the center. A separation mechanism is installed on the outer ring pipe. When the screen plate rotates inside the outer ring pipe, the separation mechanism separates the grinding balls and alumina powder in the mixture. This invention features an inner lining with a gradually decreasing inner diameter from both ends towards the center. During unloading, by slowly rotating the grinding tank, the mixture inside the lining gradually slides down to the feed port under gravity and then slides out, achieving convenient, clean, safe, and efficient discharge. Simultaneously, the separation mechanism performs three-stage screening of the mixture, which is convenient, practical, safe, clean, and hygienic. The discharge control mechanism controls the discharge speed of the mixture, further controlling and improving the screening effect.

Description

Technical Field

[0001] This invention relates to the field of polishing slurry raw material grinding technology, specifically to a raw material grinding device for polishing slurry production. Background Technology

[0002] Alumina is used as a raw material for polishing slurries, and ball mills are the equipment used for fine grinding of alumina. Existing grinding mills often require long grinding times to ensure the grinding balls thoroughly grind the alumina particles, forming alumina powder. After grinding, a mixture of grinding balls and alumina powder forms in the liner of the existing ball mill. Removing this mixture from the liner requires manual shoveling; this process is cumbersome, dust can be inhaled unsanitary, and impurities can easily be introduced into the alumina powder. Furthermore, the mixture needs to be sieved after removal to obtain the final alumina powder, which is also a complex procedure. To solve the problems of cumbersome alumina powder separation and acquisition, this invention provides a raw material grinding device for polishing slurry production. Summary of the Invention

[0003] To address the aforementioned technical deficiencies, the present invention aims to provide a raw material grinding device for polishing fluid production, wherein the inner diameter of the liner gradually decreases from both ends to the center; when unloading, by slowly rotating the grinding tank, the mixture inside the liner will gradually slide down to the feed port under the action of gravity and then slide out; at the same time, the separation mechanism realizes three-stage screening of the mixture; thus solving the technical problems mentioned in the background art.

[0004] To solve the above technical problems, the present invention adopts the following technical solution: The present invention provides a raw material grinding device for polishing liquid production, comprising: a grinding tank rotatably mounted on a support frame, and an outer ring pipe fixedly mounted on the support frame; A grinding tank cover is installed inside the feed inlet on the side of the grinding tank. The inner opening end of the outer ring pipe is rotatably installed on the outside of the grinding tank. The upper and lower tops of the outer ring pipe are respectively provided with a discharge port and a feed inlet. An arc-shaped screen plate and an arc-shaped sealing plate are respectively provided inside the discharge port and the feed inlet. Two actuating screen plates are installed on the outside of the grinding tank. The actuating screen plates are slidably installed inside the outer ring pipe and the two actuating screen plates are respectively located on both sides of the feed inlet. The grinding jar is provided with symmetrical inner linings at both ends, and the inner diameter of the linings gradually decreases from both ends toward the center. The outer ring tube is equipped with a separation mechanism. When the agitator screen plate rotates inside the outer ring tube, the separation mechanism separates the grinding balls and alumina powder in the mixture.

[0005] Preferably, the separation mechanism includes the arc-shaped sieve plate, the ring tube sieve section, and the downwardly inclined sieve pipe. The sieve pipe is installed outside the outer ring tube and its top end is connected to the outer ring tube. The top end of the sieve pipe is lower than the horizontal height of the axis of the outer ring tube, and the bottom end of the sieve pipe is connected to the grinding ball outlet pipe.

[0006] Preferably, the bottom end of the outer ring pipe is connected to a powder outlet pipe corresponding to the arc-shaped sieve plate, and the powder outlet pipe is located outside the arc-shaped sieve plate.

[0007] Preferably, the outer wall of the outer ring pipe between the top of the screening pipe and the arc-shaped screen plate is evenly distributed with screen holes to form the ring pipe screening area.

[0008] Preferably, the bottom surface of the lower screen plate of the screening pipe is connected to an inclined receiving pipe, the bottom end of the inclined receiving pipe is connected to the side of the powder outlet pipe, the upper open end of the inclined receiving pipe is connected to the outer wall of the outer ring pipe, and the ring pipe screening section is located inside the upper open end of the inclined receiving pipe.

[0009] Preferably, a discharge control mechanism is installed on the screening pipe. The discharge control mechanism includes a vertical baffle. A strip-shaped limiting hole is opened on the upper plate of the screening pipe. The vertical baffle is slidably installed in the strip-shaped limiting hole. A driving component is installed on the lower surface of the ear plate at the top of the vertical baffle. The driving component drives the vertical baffle to slide up and down to adjust the discharge speed of the grinding balls in the screening pipe.

[0010] Preferably, the driving component is an electric telescopic rod or a manual telescopic component. The electric telescopic rod is installed on the upper plate of the screening pipe, and the output end of the electric telescopic rod is connected to the lower bottom surface of the ear plate. The manual telescopic component is a screw and an inner threaded tube that are threaded together. The inner threaded tube is rotatably installed on the upper plate of the screening pipe, and the end of the screw is fixedly installed on the lower bottom surface of the ear plate.

[0011] Preferably, the maximum and minimum dimensions of the lining thickness are Dmax and Dmin, respectively; wherein, 5cm <Dmax<8cm,0.25cm<Dmax-Dmin<0.5cm。

[0012] Preferably, in the feeding mode, the grinding jar rotates so that the feeding port corresponds to the position of the top feeding port, and the grinding jar cover is removed; a guide tube with a fan-shaped cross-section is installed in the feeding port, and the arc-shaped ear plates extending from both ends of the guide tube are attached to the outside of the outer ring tube. When the guide tube is installed in the feeding port, the end of the guide tube extends into the grinding jar. Before the mixing mode, the grinding jar rotates so that the feed port aligns with the feed inlet at the top, and the grinding jar cover is installed inside the feed port; In the unloading mode, the grinding jar rotates so that the feed port aligns with the feed inlet at the top, the grinding jar cover is removed, and the arc-shaped sealing plate is installed at the feed inlet.

[0013] Preferably, the grinding jar is rotatably mounted between the two sides of the support frame, and several support rods are mounted on the base of the support frame. The outer ring pipe and the screening pipe are supported by the several support rods.

[0014] The beneficial effects of this invention are as follows: 1. The present invention is designed so that the inner diameter of the liner gradually decreases from both ends to the center. When unloading, as long as the grinding tank is rotated slowly, the mixed material in the liner will gradually slide down to the feed port under the action of gravity and then slide out, so as to achieve convenient, clean, safe and efficient material discharge.

[0015] When unloading is required, the grinding jar cover is removed, and the mixture of grinding balls and alumina powder enters the screening chamber. The mixture in the screening chamber is first screened by an arc-shaped screen plate. When the grinding jar drives the two rotating screen plates to rotate slowly, the mixture in the screening chamber is further screened by the ring pipe screening section. The mixture entering the screening pipe is screened a third time by the lower screen plate. The alumina powder separated by the ring pipe screening section and the lower screen plate is guided to the powder outlet pipe through the inclined receiving pipe and then collected. After three screenings, the grinding balls and alumina powder in the mixture are screened relatively cleanly. It is convenient, practical, safe, clean and hygienic.

[0016] This invention controls the outflow speed of the mixed material through a discharge control mechanism, thereby retaining a portion of the mixed material that may not be completely screened in the screening chamber. As the two rotating screen plates rotate, a second screening is achieved, resulting in a better screening effect. The distance between the bottom of the vertical baffle and the lower screen plate can be controlled according to the actual screening effect, making it convenient and practical. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the mixing mode of a raw material grinding device for producing polishing fluid provided by the present invention.

[0019] Figure 2 for Figure 1 Top view.

[0020] Figure 3 for Figure 2 Sectional view of AA.

[0021] Figure 4 for Figure 2 A cross-sectional view of BB.

[0022] Figure 5 This is a schematic diagram of the unloading mode of a raw material grinding device for producing polishing fluid provided by the present invention.

[0023] Figure 6 This is a schematic diagram of the feeding mode of a raw material grinding device for producing polishing fluid provided by the present invention.

[0024] Figure 7 for Figure 6 Vertical sectional view.

[0025] Figure 8 This is a schematic diagram of the structure of the grinding jar cap in this invention.

[0026] Figure 9 This is a schematic diagram of the material guide tube in this invention.

[0027] Figure 10 This is a schematic diagram of the vertical baffle and drive assembly in this invention.

[0028] Explanation of reference numerals in the attached drawings: 1-Support frame, 11-Side frame, 12-Support rod, 2-Grinding jar, 21-Grinding jar cover, 22-Inner liner, 3-Outer ring pipe, 31-Arc-shaped sieve plate, 32-Arc-shaped sealing plate, 33-Ring pipe screening section, 34-Screening pipe, 341-Grinding ball outlet pipe, 35-Powder outlet pipe, 36-Inclined receiving pipe, 37-Guide pipe, 371-Arc-shaped ear plate, 4-Actuating sieve plate, 5-Vertical baffle, 51-Drive assembly. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example 1: like Figures 1 to 10As shown, this embodiment provides a raw material grinding device for polishing slurry production, including: a grinding tank 2 rotatably mounted on a support frame 1, and an outer ring pipe 3 fixedly mounted on the support frame 1. Specifically, the grinding tank 2 is rotatably mounted between two side frames 11 of the support frame 1. Several support rods 12 are installed on the base of the support frame 1. The outer ring pipe 3 and the screening pipe 34 are supported by several support rods 12 to ensure stable support for the outer ring pipe 3. The grinding tank 2 and the outer ring pipe 3 are rotatably connected by a large bearing. The two side frames 11 provide support for the grinding tank 2, while the outer ring pipe 3 does not provide support for the grinding tank 2. In fact, the power source driving the grinding tank 2 is a servo motor. A reducer is installed between the servo motor and the grinding tank 2 to adjust the rotation speed of the grinding tank 2. This part is prior art and is not shown in the attached drawings, so it will not be described in detail here.

[0031] like Figure 3 and Figure 5 As shown, a grinding tank cover 21 is installed inside the feed inlet on the side of the grinding tank 2. The grinding tank cover 21 is located at the center of the side of the grinding tank 2, which is also the area with the smallest inner diameter of the inner liner 22. The inner opening end of the outer ring pipe 3 is rotatably installed on the outside of the grinding tank 2. The upper and lower tops of the outer ring pipe 3 are respectively provided with a discharge port and a feed port. The discharge port and the feed port are respectively provided with an arc-shaped screen plate 31 and an arc-shaped sealing plate 32. The size of the discharge port and the feed port is larger than that of the feed inlet to facilitate the loading and unloading of the grinding tank cover 21. Two actuating screen plates 4 are installed on the outside of the grinding jar 2. The actuating screen plates 4 are slidably installed inside the outer ring pipe 3 and the two actuating screen plates 4 are located on both sides of the feed port. In fact, the two actuating screen plates 4, the outer wall of the outer ring pipe 3 and the outer wall of the grinding jar 2 form a screening chamber. When unloading is required, the grinding jar cover 21 is removed and the mixture of grinding balls and alumina powder enters the screening chamber. The mixture in the screening chamber is first screened by the arc-shaped screen plate 31. Then, as the grinding jar cover 21 rotates slowly, the mixture in the screening chamber is separated from the grinding balls and alumina powder by the separation mechanism described below.

[0032] The grinding pot 2 is provided with liners 22 that are symmetrical to each other at both ends, and the inner diameter of the liners 22 gradually decreases from the two ends toward the central position. In the existing grinding pot 2, when the grinding pot sealing cover 21 is opened for discharging, only the mixed material located in the middle part of the liner 22 can slide out smoothly; while most of the mixed material located at both ends of the liner 22 needs to be manually scraped out, which has cumbersome process steps and is not clean and hygienic. In the present application, the inner diameter of the liner 22 is set to gradually decrease from the two ends to the central position; when discharging, as long as the grinding pot 2 is slowly rotated, the mixed material in the liner 22 will gradually slide to the material conveying port and then slide out under the action of gravity, realizing convenient, clean, safe and efficient discharging. More specifically, the maximum and minimum thickness dimensions of the liner 22 are Dmax and Dmin respectively; wherein, 5cm < Dmax < 8cm, 0.25cm < Dmax - Dmin < 0.5cm; the thickness of the liner 22 of the existing grinding pot 2 is generally 4-8cm, which can meet the requirement; if the difference between the inner diameter Dmin at the central position of the liner 22 and the inner diameter Dmax at the two ends is too large, it will not only cause insufficient thickness of the liner at the central position, but also cause all the mixed material in the liner 22 to accumulate at the central position; and by setting 0.25cm < Dmax - Dmin < 0.5cm, the difference between the two ends and the central position is not large, which can meet the discharging requirement and at the same time better avoid the mixed material from accumulating at the central position during grinding, which is convenient and practical.

[0033] Please refer to Figures 5 to 7As shown, a separation mechanism is installed in the outer ring pipe 3. When the screen plate 4 rotates inside the outer ring pipe 3, the separation mechanism separates the grinding balls and alumina powder in the mixture. Specifically, the separation mechanism includes an arc-shaped screen plate 31, a ring pipe screening section 33, and a downwardly inclined screening pipe 34. The screening pipe 34 is installed outside the outer ring pipe 3, and its top end is connected to the outer ring pipe 3. The top end of the screening pipe 34 is lower than the horizontal height of the axis of the outer ring pipe 3 to ensure that when the mixture in the screening chamber rotates to the top of the screening pipe 34, the mixture can slide into the screening pipe 34 under gravity. The bottom end of the screening pipe 34 is connected to the grinding ball outlet pipe 341 for the grinding balls to slide out and be collected after screening. More specifically, the bottom end of the outer ring pipe 3 is connected to the powder outlet pipe 35 corresponding to the arc-shaped screen plate 31. The powder outlet pipe 35 is located outside the arc-shaped screen plate 31 to facilitate the outflow and collection of the screened alumina powder. More specifically, screen holes are evenly distributed on the outer wall of the outer ring pipe 3 between the top of the screening pipe 34 and the arc-shaped screen plate 31 to form a ring pipe screening section 33. When the grinding tank 2 drives the two actuating screen plates 4 to rotate slowly, the mixture in the screening chamber is further screened through the ring pipe screening section 33. More specifically, the bottom surface of the lower screen plate 341 of the screening pipe 34 is connected to the inclined receiving pipe 36. The bottom end of the inclined receiving pipe 36 is connected to the side of the powder outlet pipe 35. The upper open end of the inclined receiving pipe 36 is connected to the outer wall of the outer ring pipe 3. The ring pipe screening section 33 is located inside the upper open end of the inclined receiving pipe 36. In actual use, the mixture entering the screening pipe 34 is screened for the third time by the lower screen plate 341. The alumina powder screened by the ring pipe screening section 33 and the lower screen plate 341 is guided to the powder outlet pipe 35 through the inclined receiving pipe 36 and then collected. After three screenings, the grinding balls and alumina powder in the mixture are screened relatively cleanly.

[0034] Please see Figure 5 and Figure 10As shown, a discharge control mechanism is installed on the screening pipe 34. The discharge control mechanism includes a vertical baffle 5. A strip-shaped limiting hole is opened on the upper plate of the screening pipe 34. The vertical baffle 5 is slidably installed in the strip-shaped limiting hole. A drive assembly 51 is installed on the lower bottom surface of the ear plate at the top of the vertical baffle 5. The drive assembly 51 drives the vertical baffle 5 to slide up and down, adjusting the discharge speed of the grinding balls in the screening pipe 34. Specifically, the drive assembly 51 is an electric telescopic rod or a manual telescopic component. The electric telescopic rod is installed on the upper plate of the screening pipe 34, and the output end of the electric telescopic rod is connected to the lower bottom surface of the ear plate. The manual telescopic component is a screw and an inner threaded tube that are threaded together. The inner threaded tube is rotatably installed on the upper plate of the screening pipe 34, and the end of the screw is fixedly installed on the lower bottom surface of the ear plate. In actual use, the distance between the bottom of the vertical baffle 5 and the lower screen plate 341 is adjusted by the drive component 51, thereby adjusting the discharge speed of the grinding balls. This design can prevent the mixed material from being discharged too quickly from the screening pipe 34, resulting in incomplete screening. In the screening chamber, the mixed material far from the axis of the grinding tank 2 is screened more cleanly after three screenings, while the mixed material close to the axis of the grinding tank 2 may not be screened cleanly. Therefore, the discharge control mechanism controls the discharge speed of the mixed material, thereby retaining the part of the mixed material that may not be screened cleanly in the screening chamber. As the two actuating screen plates 4 rotate, a second screening is achieved to achieve a better screening effect. The distance between the bottom of the vertical baffle 5 and the lower screen plate 341 can be controlled according to the actual screening effect, which is convenient and practical.

[0035] Please see Figure 6 and Figure 7 As shown, in the feeding mode, the grinding jar 2 rotates so that the feed inlet aligns with the top feed inlet. The grinding jar cover 21 is then removed. The grinding jar cover 21 is fastened to the grinding jar 2 with screws, and can also be easily removed with an electric wrench. The grinding jar cover 21 also has a handle (not shown) for easy removal and handling. A fan-shaped guide tube 37 is installed inside the feed inlet. Arc-shaped ear plates 371 extending from both ends of the guide tube 37 are attached to the outside of the outer ring tube 3. When the guide tube 37 is installed inside the feed inlet, its end extends into the grinding jar 2. The guide tube 37 facilitates easy feeding. Before the mixing mode, the grinding jar 2 rotates so that the feed inlet aligns with the top feed inlet, and the grinding jar cover 21 is installed inside the feed inlet. Simultaneously, an arc-shaped sealing plate 32 is installed inside the feed inlet. In the unloading mode, the grinding tank 2 rotates so that the feed port is aligned with the top feed port. The grinding tank cover 21 is removed, and the feed port is fitted with an arc-shaped sealing plate 32. At the same time, the distance between the bottom of the vertical baffle 5 and the lower screen plate 341 is adjusted to facilitate material discharge.

[0036] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A raw material grinding device for producing polishing slurry, characterized in that, include: The grinding jar (2) is rotatably mounted on the support frame (1), and the outer ring pipe (3) is fixedly mounted on the support frame (1). The grinding tank (2) has a grinding tank cover (21) installed inside the feed inlet on the side. The inner opening of the outer ring pipe (3) is rotatably installed on the outside of the grinding tank (2). The bottom and top of the outer ring pipe (3) have a discharge port and a feed inlet, respectively. The discharge port and the feed inlet are respectively provided with an arc-shaped screen plate (31) and an arc-shaped sealing plate (32). Two actuating screen plates (4) are installed on the outside of the grinding tank (2). The actuating screen plates (4) are slidably installed inside the outer ring pipe (3) and the two actuating screen plates (4) are respectively located on both sides of the feed inlet. The grinding tank (2) is provided with symmetrical inner linings (22) at both ends; the outer ring pipe (3) is equipped with a separation mechanism, and when the agitator sieve plate (4) rotates inside the outer ring pipe (3), the separation mechanism separates the grinding balls and alumina powder in the mixture; The separation mechanism includes the arc-shaped sieve plate (31), the ring pipe sieve section (33), and the inclined downward sieve pipe (34). The sieve pipe (34) is installed outside the outer ring pipe (3) and the top end of the sieve pipe (34) is connected to the outer ring pipe (3). The top end of the sieve pipe (34) is lower than the horizontal height of the axis of the outer ring pipe (3). The bottom end of the sieve pipe (34) is connected to the grinding ball outlet pipe (341). The bottom end of the outer ring pipe (3) is connected to the powder outlet pipe (35) corresponding to the arc-shaped sieve plate (31), and the powder outlet pipe (35) is located outside the arc-shaped sieve plate (31); The outer wall of the outer ring pipe (3) between the top of the screening pipe (34) and the arc-shaped screen plate (31) is evenly distributed with screen holes to form the ring pipe screening area (33). The bottom surface of the lower screen plate of the screening pipe (34) is connected to the inclined receiving pipe (36). The bottom end of the inclined receiving pipe (36) is connected to the side of the powder outlet pipe (35). The upper open end of the inclined receiving pipe (36) is connected to the outer wall of the outer ring pipe (3). The ring pipe screening section (33) is located inside the upper open end of the inclined receiving pipe (36). The screening pipe (34) is equipped with a discharge control mechanism, which includes a vertical baffle (5). A strip-shaped limiting hole is opened on the upper plate of the screening pipe (34). The vertical baffle (5) is slidably installed in the strip-shaped limiting hole. A drive assembly (51) is installed on the bottom surface of the ear plate at the top of the vertical baffle (5). The drive assembly (51) drives the vertical baffle (5) to slide up and down, thereby adjusting the discharge speed of the grinding balls in the screening pipe (34).

2. The raw material grinding device for producing polishing slurry as described in claim 1, characterized in that, The drive assembly (51) is an electric telescopic rod or a manual telescopic component. The electric telescopic rod is installed on the upper plate of the screening pipe (34), and the output end of the electric telescopic rod is connected to the lower bottom surface of the ear plate. The manual telescopic component is a screw and an inner spiral tube that are threaded together. The inner spiral tube is rotatably installed on the upper plate of the screening pipe (34), and the end of the screw is fixedly installed on the lower bottom surface of the ear plate.

3. A raw material grinding device for producing polishing slurry as described in claim 1 or 2, characterized in that, The maximum and minimum dimensions of the lining (22) thickness are Dmax and Dmin, respectively; where 5cm <Dmax<8cm,0.25cm<Dmax-Dmin<0.5cm。 4. The raw material grinding device for producing polishing slurry as described in claim 3, characterized in that, In the feeding mode, the grinding jar (2) rotates so that the feeding port corresponds to the position of the feed inlet at the top, and the grinding jar cover (21) is removed; a guide tube (37) with a fan-shaped cross-section is installed in the feed inlet, and the arc-shaped ear plates (371) extending from both ends of the guide tube (37) are attached to the outside of the outer ring tube (3). When the guide tube (37) is installed in the feed inlet, the end of the guide tube (37) extends into the grinding jar (2); Before the mixing mode, the grinding jar (2) rotates so that the feed port corresponds to the feed inlet at the top, and the grinding jar cover (21) is installed inside the feed port; In the unloading mode, the grinding tank (2) rotates so that the feed port corresponds to the feed port at the top, the grinding tank cover (21) is removed, and the arc-shaped sealing plate (32) is installed on the feed port.

5. The raw material grinding device for producing polishing slurry as described in claim 4, characterized in that, The grinding jar (2) is rotatably installed between the two side frames (11) of the support frame (1). Several support rods (12) are installed on the bottom frame of the support frame (1). The outer ring pipe (3) and the screening pipe (34) are supported by several support rods (12).

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