A kind of fine powder production process and equipment

Abstract

The present invention discloses a fine powder production process and equipment, and relates to the technical field of sand mills. The fine powder production equipment includes a feed pipe and a discharge assembly, and also includes a grinding assembly, a grinding body, a feeding cavity, and a discharge part. A production process of the fine powder production equipment is also disclosed, including the following steps: grinding bead feeding, raw material feeding, grinding, and material discharge. The present invention is provided with a feed pipe, a grinding assembly, a discharge assembly and a grinding body. The raw material is injected into the grinding assembly through the feed pipe and then ground. During the grinding process, the corresponding grinding method can be adjusted according to the hardness of the grinding material and the characteristics of the slurry concentration. For example, when the mineral concentration is small or easy to grind, a part of the slurry is separated before grinding, which can improve the grinding efficiency and prevent over-grinding from affecting the product quality; when the mineral concentration is large or difficult to grind, the uniformity of the distribution of the mineral in the cylinder can be improved, thereby improving the grinding efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of sand mills, and in particular to a fine powder production process and equipment thereof. Background Art

[0002] Sand mill, also known as bead mill, is mainly used for grinding materials. According to the performance, it can be roughly divided into horizontal sand mill, basket sand mill, vertical sand mill, etc. It is mainly composed of machine body, grinding cylinder, sand mill disc (push rod), grinding medium, motor and feed pump. The feeding speed is controlled by the feed pump. The grinding medium of this equipment is generally divided into zirconia beads, glass beads, zirconium silicate beads, etc. Fine powder refers to the material that is finely processed into powder. It is a general term for various powdered materials. When processing fine powder of materials, sand mills are often used to ensure the fine grinding degree of the powder of the materials.

[0003] The patent with publication number CN102029214A discloses a horizontal sand mill, including a grinding cylinder, a motor, a main shaft, a dispersion disk, an inlet and outlet, and a water inlet and outlet. The inner wall of the grinding cylinder is provided with a sandwich layer, the main shaft extends into the grinding cylinder, the dispersion disk is sleeved on the main shaft, and the dispersion disks are separated and positioned by spacers. A plurality of tangential grooves are provided in the dispersion disk, and a plurality of grooves are provided on the periphery of the dispersion disk. The structure is simple, and the channels form a tortuous grinding stroke, which increases and speeds up the grinding progress, forms a layered grinding in the same space, and the fineness of the ground material can reach the nanometer level.

[0004] There are some problems in the practical application of the above technical solution. The above technology only increases the grinding effect by setting tangential grooves, grooves and other structures in the dispersion disk so that each channel forms a tortuous grinding stroke, and the grinding method is relatively simple. However, in the actual grinding process, the characteristics of the material to be ground are changing or adjusting. The load of the equipment is different when grinding materials of different hardness and concentration. A single grinding method is likely to cause a decrease in the yield rate of the product, and the distribution of materials with higher hardness is uneven when grinding.

[0005] Therefore, it is necessary to invent a kind of fine powder production process and equipment thereof to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide a fine powder production process and equipment thereof to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a fine powder production device, comprising a feed pipe and a discharge assembly, and further comprising:

[0008] A grinding assembly, comprising a drive shaft and a cylinder, wherein the drive shaft is rotatably connected to the cylinder;

[0009] A grinding body, wherein a plurality of the grinding bodies are evenly distributed on the outer periphery of the driving shaft, and each of the grinding bodies is detachably connected to the driving shaft;

[0010] The grinding body comprises a fixed part and a movable part, wherein the movable part is connected to the fixed part through a connecting part, and the movable part can move relative to the fixed part under the action of the connecting part;

[0011] A material delivery cavity, the material delivery cavity is opened in the axial middle part of the driving shaft, and a material return plate is arranged in the material delivery cavity, and the material return plate can realize forward and reverse conveying of materials;

[0012] A discharge part, a plurality of the discharge parts are arranged on the driving shaft and penetrate the driving shaft, and each of the discharge parts is communicated with the feeding cavity.

[0013] Preferably, each of the fixed parts is provided with a through slot, a perforated plate is provided in the through slot, and the connecting part and the movable part are both placed in the corresponding through slot;

[0014] In an initial state, the movable portion is located in the through groove and forms a seal for the through groove.

[0015] Preferably, the end surface of each movable part and each fixed part are made of wear-resistant material.

[0016] Preferably, the elastic coefficient of the connection portion close to the feeding pipe is smaller than the elastic coefficient of the connection portion away from the feeding pipe.

[0017] Preferably, the discharging assembly is arranged at one end of the grinding assembly and is used to filter the ground material;

[0018] The discharging assembly includes a discharging pipe and a sieve plate. The discharging pipe is communicated with the cylinder. The sieve plate is fixedly connected with the cylinder. The sieve plate is placed in the cylinder.

[0019] Preferably, the sieve plate is configured as a trumpet-shaped structure, and a plurality of filter holes are opened in the middle, and the sieve plate is placed between the drive shaft and the discharge pipe.

[0020] Preferably, a plurality of grooves are formed on the outer side of each fixing portion.

[0021] Preferably, the discharge portion and the grinding body are arranged in a staggered manner, the return plate is arranged as a spiral structure, and one end of the feed cavity is fixedly connected to a valve body.

[0022] Preferably, it also includes a frame, the grinding assembly is placed on the top of the frame, and the grinding assembly is fixedly connected to the frame, the upper end of the frame is fixedly connected to a drive motor, and the output shaft of the drive motor is connected to the drive shaft through a coupling.

[0023] The invention also discloses a fine powder production process, comprising the following steps:

[0024] Step 1: Place the grinding beads into the grinding assembly;

[0025] Step 2: Raw material feeding: injecting the raw material to be processed into the interior of the grinding assembly through the feed pipe;

[0026] Step 3: Grinding: the raw material enters the grinding assembly and is ground under the action of the grinding beads inside the grinding assembly;

[0027] Step 4: Material discharge. The raw material moves inside the grinding assembly. When it moves to one end of the grinding assembly, the ground raw material is sieved and separated from the grinding beads. The raw material is discharged, and the grinding beads remain inside the grinding assembly. At this point, the grinding of the raw material can be completed. After the raw material is ground, it can be decided whether to put the raw material again for multiple processing based on the grinding standard of the raw material.

[0028] Technical effects and advantages of the present invention:

[0029] 1. The present invention provides a feed pipe and a grinding assembly. The feed pipe is used to add raw materials. After the raw materials enter the grinding assembly, they are fully mixed with the grinding beads. The return plate guides the undischarged raw materials and grinding beads to one end of the cylinder so that they can be repeatedly ground until they are qualified and discharged, which can effectively improve the grinding yield of the raw materials.

[0030] 2. The present invention arranges a grinding assembly and a grinding body so that the movable part can slide out of the through slot under the action of centrifugal force, and part of the material enters the feed cavity through the discharge part, and is discharged from the through slot through the return plate, so that the raw materials in the grinding assembly are evenly distributed. At the same time, the screen plate can also extend to grind the material, avoiding serious wear on the feed end and improving the grinding efficiency.

[0031] 3. The present invention sets a grinding assembly and a discharging assembly, drives the motor to rotate in the opposite direction, and conveys the raw materials into the grinding assembly through the feed pipe. At this time, part of the raw materials enter the feeding cavity through the discharge part, and the raw materials are conveyed through the return plate, so that the raw materials move to the discharging assembly and are screened. Qualified raw materials are discharged through the discharging pipe to avoid excessive grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0033] Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention.

[0034] Figure 3 It is a schematic cross-sectional view of the overall structure of the present invention.

[0035] Figure 4 It is a schematic diagram of the structure of the grinding assembly of the present invention.

[0036] Figure 5 It is a schematic diagram of the structure of the fixing part of the present invention.

[0037] Figure 6 It is a schematic cross-sectional view of the structure of the closed through groove of the movable part of the present invention.

[0038] Figure 7 It is a schematic cross-sectional view of the structure of the movable part sliding out of the through slot of the present invention.

[0039] Figure 8 It is a schematic cross-sectional view of the cylinder structure of the present invention.

[0040] In the figure: 1. feed pipe; 2. grinding assembly; 3. discharge assembly; 4. drive motor; 5. frame; 201. drive shaft; 202. cylinder; 203. feed cavity; 204. valve body; 206. grinding body; 207. groove; 208. discharge part; 209. return plate; 301. discharge pipe; 302. sieve plate; 2060. fixed part; 2061. through groove; 2062. movable part; 2063. connecting part; 2064. orifice plate. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Embodiment 1, the present invention provides as Figures 1 to 8 The fine powder production equipment shown comprises a feed pipe 1 and a discharge assembly 3. The end of the feed pipe 1 is connected to a feed pump for injecting grinding raw materials.

[0043] The grinding assembly 2 includes a driving shaft 201 and a cylinder 202. The feed pipe 1 is connected to the cylinder 202. The driving shaft 201 and the cylinder 202 are rotatably connected. The rotational connection position is sealed. The driving shaft 201 and the cylinder 202 are coaxial.

[0044] A plurality of grinding bodies 206 are evenly distributed on the periphery of the driving shaft 201 , and each grinding body 206 is detachably connected to the driving shaft 201 , such as by threaded connection or countersunk bolt connection, so that the grinding body 206 can be easily disassembled or replaced after excessive wear or damage.

[0045] The grinding body 206 includes a fixed part 2060 and a movable part 2062. The movable part 2062 and the fixed part 2060 can grind the material. The movable part 2062 is connected to the fixed part 2060 through the connecting part 2063. The connecting part 2063 can be a spring, a tension spring or a structure that can be deformed and reset. The movable part 2062 can move relative to the fixed part 2060 under the action of the connecting part 2063 to achieve different grinding effects.

[0046] The feeding cavity 203 is opened in the axial middle of the driving shaft 201. A return plate 209 is provided in the feeding cavity 203. The return plate 209 can realize the forward and reverse conveying of materials. Specifically, there are multiple return plates 209, which are located inside the feeding cavity 203 near the discharge end.

[0047] The discharge portion 208, multiple discharge portions 208 are opened on the driving shaft 201 and penetrate the driving shaft 201, each discharge portion 208 is connected with the feeding cavity 203, the discharge portion 208 can make the feeding cavity 203 communicate with the inside of the cylinder 202, the discharge portion 208 and the grinding body 206 are staggered, and the return plate 209 is set as a spiral structure, and its appearance is similar to that of a screw dragon. When the driving shaft 201 drives the return plate 209 to rotate, the return plate 209 can push the slurry material to realize the transportation of the slurry material.

[0048] Specifically, it also includes a frame 5, a grinding assembly 2 is placed on the top of the frame 5, and the grinding assembly 2 is fixedly connected to the frame 5. The frame 5 is used to fix the equipment. The lower side of the frame 5 has a larger weight to reduce the vibration of the equipment during operation. The upper end of the frame 5 is fixedly connected to a drive motor 4, and the drive motor 4 is electrically connected to a controller and a power supply. The controller can change the rotation direction and rotation speed of the drive motor 4. The output shaft of the drive motor 4 is connected to the drive shaft 201 through a coupling, and the grinding body 206 is driven to rotate through the drive shaft 201 to grind the mineral in the cylinder 202.

[0049] More specifically, the discharge component 3 is arranged at one end of the grinding component 2, and is used for filtering the ground material; the discharge component 3 includes a discharge pipe 301 and a sieve plate 302, the discharge pipe 301 is connected to the cylinder 202, the sieve plate 302 is fixedly connected to the cylinder 202, the sieve plate 302 is placed in the cylinder 202, the discharge pipe 301 is used to discharge the qualified ground material, and the end of the discharge pipe 301 is connected to the container for storing the material or the subsequent process equipment; the sieve plate 302 is used to filter the qualified ground material and intercept the grinding medium; and the sieve plate 302 is set as a horn structure, and a plurality of filter holes are opened in the middle to increase the contact area between the sieve plate 302 and the material and improve the efficiency of screening the material. The sieve plate 302 is placed between the drive shaft 201 and the discharge pipe 301.

[0050] During the material grinding process, the controller enables the drive motor 4 to drive the drive shaft 201 to rotate through a coupling or a reducer, and at the same time, the material pump transports the slurry to be ground into the cylinder 202 through the feed pipe 1. At this time, the slurry material is placed between the cylinder 202 and the drive shaft 201. After the slurry material enters the cylinder 202, the rotating fixed part 2060 contacts and grinds the slurry material. At the same time, the subsequently injected slurry pushes the slurry in the cylinder 202 to move toward the screen plate 302. The material in the slurry material that meets the grinding particle size diameter requirements penetrates the screen plate 302 and enters the subsequent process through the discharge pipe 301.

[0051] Part of the slurry and grinding media that do not meet the grinding requirements gather at the end of the driving shaft 201 and are transported to the feeding chamber 203 by the return plate 209. The material is then squeezed by the return plate 209 and transported to one end of the feeding chamber 203 close to the discharge portion 208. It is then discharged through the discharge portion 208 and re-enters between the driving shaft 201 and the cylinder 202 to be mixed with subsequent materials for secondary grinding to improve the grinding effect.

[0052] Embodiment 2, in actual grinding work, as the characteristics or types of the grinding materials change, it is also necessary to timely adjust the working state of the device to ensure the grinding effect of the fine powder. For example, when the hardness of the grinding material becomes smaller, during the crushing, pulping and transportation of the slurry material, the slurry material itself contains a relatively high amount of materials that meet the grinding particle size. When the ore containing a relatively high amount of materials that meet the grinding particle size directly enters the cylinder 202, and then passes through multiple groups of grinding bodies 206 during the forward flow process, the materials in the slurry material that originally meet the grinding particle size will be over-ground after being ground multiple times, which will not only increase the grinding burden of the grinding body 206, but also cause the final fine powder product to be over-ground, affecting the quality of the fine powder product. Therefore, it is necessary to timely adjust the working state of the device according to the characteristics of the supplied slurry material and the actual production situation.

[0053] Specifically, by detecting the characteristics of the slurry material, when the proportion of materials meeting the grinding particle size in the supplied slurry material exceeds a preset value, the controller causes the drive motor 4 to rotate forward and reverse along a set periodicity. During the reversal of the motor, the feed pump conveys the slurry material to between the drive shaft 201 and the cylinder 202 through the feed pipe 1. At this time, the slurry is affected by the injection of subsequent slurry materials and flows toward the sieve plate 302. At the same time, part of the slurry raw materials enter the feed cavity 203 through the discharge portion 208, and are pushed by the return plate 209 to accelerate the flow toward the sieve plate 302. At this time, the part of the slurry material that meets the grinding particle size requirements passes through the sieve plate 302 and enters the discharge pipe 301 and is then discharged. The part of the slurry material that does not meet the grinding particle size requirements and the grinding medium are blocked by the sieve plate 302 and retained in the cylinder 202. In this way, through the action of the feed cavity 203 and the return plate 209, a part of the slurry does not need to be ground, but is directly conveyed to the sieve plate 302 for separation, thereby preventing the slurry particles containing too many particles that meet the particle size from being over-ground, causing the product to be over-ground and affecting the product quality; at the same time, the grinding pressure is reduced and the grinding efficiency is improved.

[0054] In addition, the sieve plate 302 is impacted by the slurry material pushed by the return plate 209, and vibrates to clear the filter holes on the sieve plate 302, thereby preventing the sieve plate 302 from being blocked and improving the grinding effect.

[0055] During the forward rotation of the motor, the materials and grinding media that do not meet the particle size requirements and are blocked by the sieve plate 302 are sucked into the feed cavity 203 under the influence of the return plate 209 during the rotation of the drive shaft 201, and are discharged again through the discharge portion 208 to between the drive shaft 201 and the cylinder 202. During this process, the feed pump continues to inject slurry materials into the cylinder 202, and at the same time, the drive shaft 201 rotates to cause the fixed portion 2060 to collide and grind with the materials in the cylinder 202, so that the materials that do not meet the particle size requirements are crushed and discharged through the sieve plate 302, so as to ensure the grinding of unqualified materials and prevent unqualified materials from gathering at the sieve plate 302.

[0056] The controller can then make the drive motor 4 rotate in the opposite direction again. By alternating the rotation direction of the drive motor 4, the grinding efficiency can be improved while avoiding over-grinding of the slurry material due to excessive grinding, thereby effectively enhancing the grinding quality of the material and improving the grinding efficiency.

[0057] Embodiment 3, as mentioned above, in actual grinding work, changes in the characteristics or types of the grinding materials also require timely adjustment of the working state of the device to ensure the grinding effect of the fine powder. For example, during the grinding process, when the hardness of the ground material increases and the slurry concentration increases, after the slurry material is added from the feed end, most of the slurry material first gathers at the feed end position, and then, under the push of the subsequent slurry material, the slurry material contacts and is ground with the grinding body 206 during the movement to the discharge end. In the above process, the slurry material initially added, especially when the hardness of the mineral is relatively large, stays at the feed end. The material with large particle size and high hardness is relatively large, resulting in a relatively large grinding pressure on the grinding body 206 near the feed end, which makes the grinding body 206 near the feed end wear faster, and also reduces the grinding efficiency, and even causes accumulation and blockage, affecting normal production.

[0058] In view of the above problems existing in the production process, one end of the feeding chamber 203 is fixedly connected with a valve body 204, and the valve body 204 is arranged on a side close to the screen plate 302. In order to facilitate the automatic control of the entire grinding work, the valve body 204 can be specifically arranged as an electromagnetic valve body, and the valve body 204 and the driving motor 4 are electrically connected to the control system. The valve body 204 is used to control whether the end of the feeding chamber 203 near the discharge end is connected with the inside of the cylinder 202, so that it can adaptably adjust the grinding mode according to the different states of different slurry materials and the working conditions of the grinder to meet the grinding requirements of different materials.

[0059] Each fixed part 2060 is provided with a through slot 2061, and a perforated plate 2064 is provided in the through slot 2061. The perforated plate 2064 is a hollow structure, so that the through slot 2061 is connected with the feeding cavity 203. The connecting part 2063 and the movable part 2062 are both placed in the corresponding through slot 2061. The movable part 2062 can also grind the material. The end of the movable part 2062 can slide out of the through slot 2061. After the movable part 2062 moves relative to the through slot 2061, a gap is generated between the movable part 2062 and the fixed part 2060, and the slurry material can pass through the feeding cavity 203 and the through slot 2061 and flow to between the drive shaft 201 and the cylinder 202. In the initial state, the movable part 2062 is located in the through slot 2061 and forms a seal with the through slot 2061. The end of the movable part 2062 is inclined, and the other end of the connecting part 2063 is fixedly connected to the perforated plate 2064.

[0060] The elastic coefficient of the connecting part 2063 on the side close to the feed pipe 1 is smaller than the elastic coefficient of the connecting part 2063 on the side away from the feed pipe 1, so that during use, under the same force, the connecting part 2063 on the side close to the feeding end can move a greater distance relative to the through groove 2061, thereby ensuring that more material is discharged from the through groove 2061 on the side close to the feeding end, thereby preventing excessive material from being discharged to the discharging end through the through groove 2061, which cannot be effectively ground.

[0061] Specifically, a plurality of grooves 207 are provided on the outer side of the fixing part 2060, and the grooves 207 can improve the grinding effect of the fixing part 2060, the grinding medium, and the material. The fixing part 2060 is set to a square structure, which can improve the stirring and grinding effects.

[0062] Specifically, by detecting the characteristics of the slurry material, when the proportion of materials that do not meet the grinding particle size in the supplied slurry material exceeds the preset value or it is detected that the hardness of the minerals inside the slurry is high, the controller causes the drive motor 4 to rotate in the opposite direction and increases the rotation speed of the drive motor 4. At the same time, the controller closes the valve body 204 and closes the end of the feed chamber 203. At this time, the speed of the drive shaft 201 is increased due to the influence of the drive motor 4, the centrifugal force on the movable part 2062 increases and moves to the outside of the through groove 2061, and the through groove 2061 is no longer sealed, thereby connecting the through groove 2061 with the cylinder 202. After the through slot 2061 is opened, part of the slurry enters the feeding chamber 203 through the discharge part 208, and enters the through slot 2061 under the action of the return plate 209 and the centrifugal force, and then is discharged through the gap between the through slot 2061 and the movable part 2062, so that part of the material is dispersed to the middle position of the cylinder 202, preventing the slurry from accumulating at the feeding end, increasing the degree of wear of the fixed part 2060 at the feeding end, and preventing the material from accumulating at the feeding end and causing blockage. In the process again, the valve body 204 is closed to prevent the slurry from directly contacting the screen plate 302 and causing blockage. At this time, the slurry entering the feeding chamber 203 can only be discharged through the through slot 2061. At the same time, since the movable part 2062 extends out of the through slot 2061 and can participate in grinding, it cooperates with the fixed part 2060 to grind together, further improving the grinding effect.

[0063] It should be noted that the elastic coefficient of the connecting part 2063 on the side close to the feed pipe 1 is smaller than the elastic coefficient of the connecting part 2063 on the side away from the feed pipe 1. At the same time, affected by the different elastic coefficients of the connecting part 2063, the movable part 2062 on the side close to the feed pipe 1 slides out of the corresponding through slot 2061 by a larger distance, and the movable part 2062 on the side close to the screen plate 302 slides out of the corresponding through slot 2061 by a smaller distance. In this way, it is ensured that more materials are discharged from the through slot 2061 on the side close to the feeding end, while relatively less materials are discharged from the through slot 2061 on the side close to the discharging end. While improving the uniformity of distribution of materials with high hardness in the cylinder 202, it can prevent excessive materials from being discharged to the discharging end through the through slot 2061 close to the discharging end, making it impossible to carry out effective grinding, or even accumulating at the discharging end.

[0064] In summary, when the device is in use, the material is injected into the grinding component 2 through the feed pipe 1, and the material is mixed and collided with the grinding beads in the grinding component 2 to grind the raw material. The ground raw material continues to move toward one end of the grinding component 2, and after screening by the discharge component 3, the qualified raw material is discharged from the device, and the grinding beads and the raw material that has not been ground to a qualified degree remain in the grinding component 2, and flow back to one end of the grinding component 2, and mix with the subsequent raw material to continue the grinding operation.

[0065] When grinding easily grindable raw materials, the driving motor 4 rotates in the opposite direction, and the raw materials are conveyed into the grinding assembly 2 through the feed pipe 1. At this time, part of the raw materials enter the feed cavity 203 through the discharge portion 208, and are conveyed through the return plate 209, so that the raw materials move to the discharge assembly 3 and are screened. Qualified raw materials are discharged through the discharge pipe 301 to avoid over-grinding.

[0066] When grinding materials with higher hardness, the driving motor 4 is rotated in the opposite direction, and the valve body 204 is controlled to close the end of the feeding chamber 203. The raw materials are then transported to the grinding assembly 2 through the feeding pipe 1, and the rotation speed of the driving motor 4 is increased, so that the movable part 2062 slides out of the through groove 2061 under the influence of centrifugal force. At this time, part of the material enters the feeding chamber 203 through the discharge part 208, and is transported through the return plate 209 to be discharged from the through groove 2061, so that the raw materials in the grinding assembly 2 are uniform. At the same time, the movable part 2062 can also extend to grind the material, thereby avoiding serious wear on the feeding end and improving the grinding efficiency. At the same time, qualified materials penetrate the screen plate 302 and are discharged from the discharge pipe 301.

[0067] The present invention also provides a process for producing fine powder, comprising the following steps:

[0068] Step 1: Place the grinding beads into the grinding assembly 2;

[0069] The grinding beads are placed before the device is started and circulated inside the device to achieve continuous processing of raw materials;

[0070] Step 2: Raw material feeding: injecting the raw material to be processed into the interior of the grinding assembly 2 through the feed pipe 1;

[0071] The feed pipe 1 is connected to the delivery pump so that the raw materials are continuously injected into the feed pipe 1;

[0072] Step 3: Grinding: the raw material enters the grinding assembly 2 and is ground under the action of the grinding beads inside the grinding assembly 2;

[0073] The grinding beads in the grinding assembly 2 collide with the raw material after being mixed to achieve grinding of the raw material, and the operation mode of the equipment is adjusted according to the hardness of the raw material;

[0074] Step 4, material discharge. The raw material moves inside the grinding component 2. When it moves to one end of the grinding component 2, the ground raw material is sieved and separated from the grinding beads. The raw material is discharged, and the grinding beads remain inside the grinding component 2. At this point, the grinding of the raw material can be completed. After the raw material is ground, it can be decided whether to put the raw material again for multiple processing based on the grinding standard of the raw material.

[0075] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fine powder production device, comprising a feed pipe (1) and a discharge assembly (3), characterized in that: Also includes: A grinding assembly (2), comprising a drive shaft (201) and a cylinder (202), wherein the drive shaft (201) and the cylinder (202) are rotatably connected; A grinding body (206), wherein a plurality of the grinding bodies (206) are evenly distributed on the outer circumference of the driving shaft (201), and each of the grinding bodies (206) is detachably connected to the driving shaft (201); The grinding body (206) comprises a fixed part (2060) and a movable part (2062); the movable part (2062) is connected to the fixed part (2060) via a connecting part (2063); and the movable part (2062) can move relative to the fixed part (2060) under the action of the connecting part (2063); A material delivery cavity (203), the material delivery cavity (203) is opened in the axial middle part of the driving shaft (201), a material return plate (209) is arranged in the material delivery cavity (203), and the material return plate (209) can realize forward and reverse conveying of materials; A discharge portion (208), wherein a plurality of the discharge portions (208) are disposed on the drive shaft (201) and penetrate the drive shaft (201), and each of the discharge portions (208) is communicated with the feed cavity (203).

2. A fine powder production equipment according to claim 1, characterized in that: Each of the fixed parts (2060) is provided with a through slot (2061), a perforated plate (2064) is provided in the through slot (2061), and the connecting part (2063) and the movable part (2062) are both placed in the corresponding through slot (2061); In the initial state, the movable portion (2062) is located in the through groove (2061) and forms a seal with the through groove (2061).

3. A fine powder production equipment according to claim 2, characterized in that: The end surface of each movable portion (2062) and each fixed portion (2060) are both made of wear-resistant material.

4. A fine powder production equipment according to claim 2, characterized in that: The elastic coefficient of the connection part (2063) on the side close to the feeding pipe (1) is smaller than the elastic coefficient of the connection part (2063) on the side far from the feeding pipe (1).

5. A refined powder production equipment according to claim 1, characterized in that: The discharge assembly (3) is arranged at one end of the grinding assembly (2) and is used to filter the ground material; The discharge assembly (3) comprises a discharge pipe (301) and a sieve plate (302); the discharge pipe (301) is connected to the cylinder (202); and the sieve plate (302) is placed inside the cylinder (202).

6. A refined powder production equipment according to claim 5, characterized in that: The sieve plate (302) is configured as a trumpet-shaped structure and has a plurality of filter holes in the middle. The sieve plate (302) is placed between the drive shaft (201) and the discharge pipe (301).

7. A refined powder production equipment according to claim 2, characterized in that: A plurality of grooves (207) are formed on the outer side of each fixing portion (2060).

8. A refined powder production equipment according to claim 1, characterized in that: The material discharge portion (208) and the grinding body (206) are arranged in a staggered manner, the material return plate (209) is arranged as a spiral structure, and one end of the material delivery cavity (203) is fixedly connected to a valve body (204).

9. A refined powder production equipment according to claim 1, characterized in that: The machine also comprises a frame (5), the grinding assembly (2) is placed on the top of the frame (5), and the grinding assembly (2) is fixedly connected to the frame (5), and a driving motor (4) is fixedly connected to the upper end of the frame (5), and the output shaft of the driving motor (4) is connected to the driving shaft (201) via a coupling.

10. A fine powder production process, applied to a fine powder production device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Place the grinding beads into the grinding assembly (2); Step 2: feeding the raw materials, injecting the raw materials to be processed into the interior of the grinding assembly (2) through the feed pipe (1); Step 3: grinding: the raw material enters the grinding assembly (2) and is ground under the action of the grinding beads inside the grinding assembly (2); Step 4: Material discharge. The raw material moves inside the grinding assembly (2). When it moves to one end of the grinding assembly (2), the ground raw material is separated from the grinding beads through a sieve. The raw material is discharged, and the grinding beads remain inside the grinding assembly (2), completing the grinding of the raw material.

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