A quartz sand pulverizing apparatus having an impurity filtering function

Abstract

The application belongs to the technical field of quartz sand powder making, and specifically relates to a quartz sand powder making device with impurity filtering function. The powder making device comprises a base, a top cover assembly, a crushing cone assembly and a power wheel. The top cover assembly is installed on the base, the crushing cone assembly is installed at the central position of the base, the power wheel penetrates from the side wall of the base, the power wheel is in transmission connection with the crushing cone assembly, the crushing cone assembly and the top cover assembly constitute a periodically changed meshing gap, the up and down directions of the meshing gap are respectively the feeding and discharging directions of the material, a receiving groove and a grinding wheel are arranged below the base, and the quartz sand is crushed into particles by the crushing cone assembly cooperating with the top cover assembly and then enters the lower water adding and grinding area. An airflow posture adjusting structure is arranged on the outer surface of the meshing cone, the airflow posture adjusting structure changes the posture of the quartz sand entering the meshing gap so that the long axis direction of the quartz sand tends to the circumferential direction with the main shaft as the axis.

Description

Technical Field

[0001] This invention relates to the field of quartz sand powder production technology, specifically to a quartz sand powder production device with impurity filtration function. Background Technology

[0002] Quartz sand, as a major source of silicon, is an important raw material in the electronics and electrical industries.

[0003] After the quartz sand ore is mined, it needs to be crushed, impurities removed, and powdered before being packaged and stored for later use.

[0004] In existing technologies, traditional jaw crushers or cone crushers are generally used for coarse crushing, which can only achieve a particle size of about 5mm. Traditional crushers cannot directly produce powdered quartz sand. Further crushing is required, such as roller grinding or pneumatic crushing with pneumatic impact, to achieve further crushing. For example, documents such as CN216936194U, CN216172613U, and CN117101784B all use a meshing wheel crushing method to crush quartz sand into powder step by step, which requires a long operation time. Alternatively, roller crushing methods require frequent maintenance, and the crushing efficiency of roller meshing wheels is relatively low. Summary of the Invention

[0005] The purpose of this invention is to provide a quartz sand powdering device with impurity filtration function to solve the problems raised in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A quartz sand pulverizing device with impurity filtration function is disclosed. The pulverizing device includes a base, a top cover assembly, a crushing cone assembly, and a drive wheel. The top cover assembly is installed on the base, and the crushing cone assembly is installed in the center of the base. The drive wheel extends into the side wall of the base and is connected to the crushing cone assembly. The crushing cone assembly and the top cover assembly form a periodically changing meshing gap. The vertical direction of the meshing gap is the feeding and discharging direction of the material, respectively. A receiving trough and a grinding wheel are provided below the base. The crushing cone assembly, in conjunction with the top cover assembly, crushes the quartz sand into microparticles, which then enter the water-adding grinding area below.

[0007] The material to be processed is fed into the machine from the top cover assembly. The material is mainly quartz sand ore that has undergone preliminary crushing. Quartz sand with a particle size of 5-20mm is fed into the device and crushed into particles smaller than 2mm by the crushing cone assembly. The particles fall into the lower space, where the quartz sand is agitated and washed in water. Some mud and other impurities dissolve into the water, while a few other insoluble impurities are washed away from the quartz sand particles. The quartz sand undergoes further grinding in the water, using a meshing auger or similar structure for agitation. The friction between the quartz sand particles themselves is used for further crushing. After water grinding, the particles are filtered, washed, and dried to obtain quartz sand powder. This application mainly combines the crusher and water grinding process to produce quartz sand particles with similar particle sizes of less than 2mm from the uneven primary particles through a fine crushing process. The particles are then further ground by the friction between themselves to become powder.

[0008] The top cover assembly includes a top cover shell and a meshing cylinder. The crushing cone assembly includes a meshing cone, a main shaft, and a shaft seat. The shaft seat is fixed relative to the inner wall of the machine base. The main shaft is eccentrically mounted inside the shaft seat. The meshing cone is mounted on the top of the main shaft. The drive wheel is connected to the main shaft for transmission. The top cover shell is mounted on the machine base. The meshing cylinder is fixed in the center of the top cover shell. The lower inner surface of the meshing cylinder mates with the upper surface of the meshing cone to communicate the meshing gap and crush the quartz sand in the gap. An airflow attitude adjustment structure is provided on the outer surface of the meshing cone. The airflow attitude adjustment structure changes the attitude of the quartz sand entering the meshing gap, so that the long axis of the quartz sand tends to be circumferential with the main axis as the axis.

[0009] After the material enters the gap between the meshing cone and the meshing cylinder, the main shaft is driven by the power wheel to rotate eccentrically. During the rotation, due to the limitation of the installation position, the meshing cone actually rotates and oscillates around a center, which is the operation of the prior art, and will not be elaborated here. When the material enters the meshing gap, if there are no other limiting factors, the quartz sand particles will fall into the meshing gap in any posture, and due to gravity, a large proportion of the particles fall in the direction of their long axis vertically. In this application, the long axis refers to the direction of the longest dimension when the particle is not a standard sphere. When the radial direction of the long axis of the quartz sand is the axis of the main shaft, the stone... Quartz sand cannot be fully held in the meshing gap; instead, it is squeezed and broken apart while the gap is still relatively large. The broken quartz sand falls quickly and cannot be further reduced in size. If most of the quartz sand falls in the circumferential direction of the main shaft axis into the gap between the meshing cone and the meshing cylinder, then the meshing gap will complete the crushing process of the quartz sand in a smaller size. The quartz sand is crushed more thoroughly. Even if the front part is crushed, the rear part of the quartz sand has been held in place and will not break apart and bounce to the discharge port. Therefore, if the long axis of the quartz sand is along the circumferential direction, it can enter a smaller meshing gap, and the crushed quartz sand powder will tend to have a uniform and small particle size.

[0010] The crushing cone assembly also includes a sealing swing block and an air intake pipe. The sealing swing block is sleeved on the main shaft, with its upper surface abutting against the lower surface of the meshing cone. The air intake pipe is connected to the lower side wall of the shaft seat. The spindle is equipped with a core hole extending upward from the bottom end. The core hole is a blind hole. Side holes are provided on the side wall of the spindle. The side holes are located below the section where the spindle and the meshing cone are installed. A downward-extending air passage groove is provided on the inner wall of the meshing cone. The upper surface of the meshing cone is divided into a meshing surface and a guide surface. The guide surface is located obliquely above the meshing surface. The air passage groove extends from the top of the meshing cone to at least the axial position at the guide surface. Several air holes are also provided circumferentially on the meshing cone. The air holes pass through the guide surface and are tangential to the guide surface.

[0011] High-pressure gas enters the device through the inlet pipe and is blown out through the core hole, side hole, and air passage groove in sequence from each air hole. The tangentially blown gas blows the falling quartz sand here. If the long axis of the quartz sand falls along the meshing cone, it will be subject to greater gas blowing force, causing the long axis of the quartz sand to deflect and change its posture. The long axis of the quartz sand tends to fall along the circumference of the meshing cone, thus completing the process of adjusting the falling posture of the quartz sand.

[0012] The stomata have an upward tilt angle of 5 to 20°.

[0013] The upward-sloping air vents adjust the orientation of the quartz sand, allowing it to change its long axis towards the circumference of the meshing cone while also having a downward-sloping angle that aligns with the velocity direction of the quartz sand entering the meshing gap.

[0014] The powder-making equipment also includes a guide tube, which is installed inside the top cover shell and located above the meshing cylinder. The guide tube is in the shape of an inverted trumpet.

[0015] The guide tube guides the quartz sand material entering the device into the gap between the meshing cylinder and the meshing cone to prevent material from accumulating above.

[0016] The inner surface of the guide tube is provided with a spiral groove.

[0017] The quartz sand is allowed to roll downwards along a spiral path, sequentially entering the gap between the crushing cone assembly and the meshing cylinder, preventing the machine from being overloaded and jammed due to excessively rapid material entry in a short period of time.

[0018] The spiral lower end of the groove extends in the direction of the air outlet.

[0019] The spiral direction of the falling quartz sand points towards the direction of the gas outlet, allowing the quartz sand to directly face the incoming gas flow and quickly change its posture to the designed posture.

[0020] The top cover assembly is floatingly mounted to the base, and a vertical lifting structure is provided between the top cover shell and the base.

[0021] After the device has been running for a period of time, when it is necessary to clean the meshing gap between the meshing cylinder and the meshing cone, the top cover shell, meshing cylinder and guide cylinder are lifted together by the lifting structure. The meshing gap can be reached from the side of the base. It can be rinsed by high pressure water gun or other means, or the surface of the meshing gap can be checked for defects and whether surface repair is needed to ensure high hardness at the meshing gap.

[0022] The drive wheel receives power via a belt, and a flywheel is also installed at the end of the drive wheel. The flywheel accounts for more than 40% of the weight of the rotating parts of the device.

[0023] Belt drives prevent overload, while flywheels store excess power during normal operation, providing extra power to compensate for momentary overload and prevent jamming.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention comprehensively processes quartz sand and gravel materials by combining a cone crusher and a water mill structure. The cone crusher crushes the material into smaller particles, which are then washed with water and ground into finer powder using their own friction. After that, only drying is required. The crusher is specifically designed to handle small particles. For small particles, the orientation of the material entering the meshing surface affects the direction of force. This application blows tangential gas at the meshing cone to change the long axis of the particles towards the circumferential direction, allowing the material particles to enter the end of the meshing gap. This results in more thorough meshing and crushing, eliminating the problem of large particles breaking off and bouncing downwards, and producing more uniform material particles. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the external structure of the main body of the present invention; Figure 2 This is a schematic diagram of the internal cross-sectional structure of the present invention; Figure 3 This is a three-dimensional schematic diagram of the cross-sectional structure of the present invention; Figure 4 This is a schematic diagram of the external shape of the meshing cone and the main shaft of the present invention; Figure 5 This is a schematic diagram of the cross-sectional structure of the meshing cone and the main shaft of the present invention; Figure 6 for Figure 5 Partial view A in the middle; Figure 7 This is a schematic diagram illustrating the working principle of the crushing cone assembly in conjunction with the top cover assembly of the present invention. Figure 8 This is a schematic diagram of the posture adjustment principle of quartz sand entering the gap between the meshing cone and the meshing cylinder from a top-down perspective, according to the present invention. In the diagram: 1. Base; 2. Top cover assembly; 21. Top cover shell; 22. Meshing cylinder; 23. Guide cylinder; 231. Groove; 3. Crushing cone assembly; 31. Meshing cone; 311. Meshing surface; 312. Guide surface; 313. Air passage groove; 314. Air hole; 32. Main shaft; 321. Core hole; 322. Side hole; 33. Sealing block; 36. Shaft seat; 37. Air inlet pipe; 4. Power wheel; 9. Quartz sand. Detailed Implementation

[0026] 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.

[0027] A quartz sand pulverizing device with impurity filtration function is disclosed. The pulverizing device includes a base 1, a top cover assembly 2, a crushing cone assembly 3, and a drive wheel 4. The top cover assembly 2 is installed on the base 1, and the crushing cone assembly 3 is installed in the center of the base 1. The drive wheel 4 extends into the side wall of the base 1 and is connected to the crushing cone assembly 3 by transmission. The crushing cone assembly 3 and the top cover assembly 2 form a periodically changing meshing gap. The vertical direction of the meshing gap is the feeding and discharging direction of the material, respectively. A receiving trough and a grinding wheel are provided below the base 1. The crushing cone assembly 3, in conjunction with the top cover assembly 2, crushes the quartz sand 9 into microparticles, which then enter the water-adding grinding area below.

[0028] like Figure 1 , 2 As shown, the material to be processed is fed into the machine from above the top cover assembly 2. The material is mainly quartz sand ore that has undergone preliminary crushing. Quartz sand with a particle size of 5-20mm is fed into the device and crushed into particles smaller than 2mm by the crushing cone assembly 3. The particles fall into the lower space, where the quartz sand is first washed by stirring in water. Some mud and other impurities dissolve into the water, and a few other insoluble impurities are washed away from the quartz sand particles in the water. The quartz sand undergoes further grinding in the water, using a meshing auger or other structure for stirring. The friction between the quartz sand particles themselves is used for further crushing. After water grinding, the particles are filtered, washed, and dried to obtain quartz sand powder. This application mainly combines the crusher and water grinding process to produce quartz sand particles with similar particle sizes of less than 2mm from the uneven primary particles through a fine crushing process. The particles are then further ground by the friction between themselves to become powder.

[0029] Top cover assembly 2 includes a top cover shell 21 and a meshing cylinder 22. Crushing cone assembly 3 includes a meshing cone 31, a main shaft 32, and a shaft seat 36. The shaft seat 36 is fixed relative to the inner wall of the machine base 1. The main shaft 32 is eccentrically mounted inside the shaft seat 36. The meshing cone 31 is mounted on the top of the main shaft 32. The drive wheel 4 is connected to the main shaft 32 for transmission. The top cover shell 21 is mounted on the machine base 1. The meshing cylinder 22 is fixed in the center of the top cover shell 21. The lower inner surface of the meshing cylinder 22 mates with the upper surface of the meshing cone 31 to communicate the meshing gap and crush the quartz sand 9 in the gap. An airflow attitude adjustment structure is provided on the outer surface of the meshing cone 31. The airflow attitude adjustment structure changes the attitude of the quartz sand entering the meshing gap, so that the long axis direction of the quartz sand tends to be circumferential with the main shaft 32 as the axis.

[0030] like Figures 2-7 As shown, after the material enters the gap between the meshing cone 31 and the meshing cylinder 22, the main shaft 32 is driven by the power wheel 4 to rotate eccentrically. During the rotation, due to the limitation of the installation position, the meshing cone 31 actually rotates and oscillates around a center. This is the operation of the prior art, which will not be described in detail here. When the material enters the meshing gap, if there are no other limiting factors, the quartz sand particles will fall into the meshing gap in any posture. Due to gravity, a large proportion of the particles fall in the direction of the long axis vertically. In this application, the long axis refers to the direction of the longest dimension when the particle is not a standard sphere. Figure 8 As shown, when the long axis of the quartz sand 9 is radially aligned with the axis of the main shaft 32, the quartz sand 9 cannot be fully held by the meshing gap. Instead, it is squeezed and broken apart when the gap is still relatively large. The broken quartz sand 9 falls down quickly and cannot further reduce the particle size. If most of the quartz sand 9 falls in the circumferential direction along the axis of the main shaft 32, the meshing cone 31 and the meshing cylinder 22 will complete the crushing process of the quartz sand 9 at a smaller size. The quartz sand 9 will be crushed more thoroughly. Even if the front part is crushed, the rear part of the quartz sand 9 will be held and will not break apart and bounce to the discharge port. Therefore, by allowing the long axis of the quartz sand 9 to be along the circumferential direction, it can enter a smaller meshing gap, and the crushed quartz sand powder will have a more uniform and smaller particle size.

[0031] The crushing cone assembly 3 also includes a sealing swing block 33 and an air inlet pipe 37. The sealing swing block 33 is sleeved on the main shaft 32, and the upper surface of the sealing swing block 33 abuts against the lower surface of the meshing cone 31. The air inlet pipe 37 is connected to the lower side wall of the shaft seat 36. The spindle 32 is provided with a core hole 321 extending upward from the bottom end. The core hole 321 is a blind hole. A side hole 322 is provided on the side wall of the spindle 32. The side hole 322 is located below the section where the spindle 32 and the meshing cone 31 are installed. A downward-extending air groove 313 is provided on the inner wall of the meshing cone 31. The upper surface of the meshing cone 31 is divided into a meshing surface 311 and a guide surface 312. The guide surface 312 is located obliquely above the meshing surface 311. The air groove 313 extends from the top of the meshing cone 31 to at least the axial position at the guide surface 312. Several air holes 314 are also provided circumferentially on the meshing cone 31. The air holes 314 pass through the guide surface 312 and are tangential to the guide surface 312.

[0032] like Figures 2-7 As shown, the high-pressure gas entering the device from the air inlet pipe 37 is blown out from each air hole 314 through the core hole 321, side hole 322, and air passage groove 313. The tangentially blown gas blows the falling quartz sand 9 here. If the long axis of the quartz sand 9 falls along the meshing cone 31, it will be subject to greater gas blowing force, and the long axis of the quartz sand 9 will deflect, thereby changing its posture. The long axis of the quartz sand 9 tends to fall along the circumference of the meshing cone 31, thus completing the process of adjusting the falling posture of the quartz sand 9.

[0033] The pores 314 have an upward tilt angle of 5~20°.

[0034] like Figure 4 As shown, the air vent 314 blows out gas at an upward angle to adjust the posture of the quartz sand 9, so that when the long axis of the quartz sand 9 changes to tend towards the circumference of the meshing cone 31, it also has an downward angle to match the velocity direction of the quartz sand 9 entering the meshing gap.

[0035] The powder making equipment also includes a guide tube 23, which is installed inside the top cover shell 21 and located above the meshing tube 22. The guide tube 23 is in the shape of an inverted trumpet.

[0036] The guide tube 23 guides the quartz sand 9 entering the device into the gap between the meshing tube 22 and the meshing cone 31 to prevent the material from accumulating above.

[0037] The inner surface of the guide tube 23 is provided with a spiral groove 231.

[0038] The quartz sand 9 is allowed to roll downwards along a spiral path and enter the gap between the crushing cone assembly 3 and the meshing cylinder 22 in sequence, preventing the machine from being overloaded and jammed due to excessively rapid material entry in a short period of time.

[0039] The spiral lower end of the groove 231 extends in the direction of the air outlet of the vent 314.

[0040] like Figure 4 , 8As shown, the spiral direction of the falling quartz sand 9 points towards the air outlet direction of the vent 314, allowing the quartz sand 9 to directly face the incoming gas flow and quickly change its posture to the designed posture.

[0041] The top cover assembly 2 is floatingly installed with the base 1, and a vertical lifting structure is provided between the top cover shell 21 and the base 1.

[0042] like Figure 1 , 2 As shown, after the device has been running for a period of time, when it is necessary to clean the meshing gap between the meshing cylinder 22 and the meshing cone 31, the top cover shell 21, the meshing cylinder 22, and the guide cylinder 23 are lifted together by the lifting structure. The meshing gap can be reached from the side of the base 1. It can be rinsed by high-pressure water gun or other means, or the surface of the meshing gap can be checked for defects and whether surface repair is needed to ensure high hardness at the meshing gap.

[0043] The power wheel 4 is powered by a belt, and a flywheel is also installed at the end of the power wheel 4. The flywheel accounts for more than 40% of the weight of the rotating parts of the device.

[0044] Belt drives prevent overload, while flywheels store excess power during normal operation, providing extra power to compensate for momentary overload and prevent jamming.

[0045] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A quartz sand powdering device with impurity filtration function, characterized in that: The powder making equipment includes a base (1), a top cover assembly (2), a crushing cone assembly (3), and a power wheel (4). The top cover assembly (2) is installed on the base (1), and the crushing cone assembly (3) is installed in the center of the base (1). The power wheel (4) extends into the side wall of the base (1) and is connected to the crushing cone assembly (3) by transmission. The crushing cone assembly (3) and the top cover assembly (2) form a periodically changing meshing gap. The upper and lower directions of the meshing gap are the feeding and discharging directions of the material, respectively. A receiving trough and a grinding wheel are provided below the base (1). The crushing cone assembly (3) works with the top cover assembly (2) to crush the quartz sand (9) into particles and then enter the water-adding grinding area below. The top cover assembly (2) includes a top cover shell (21) and a meshing cylinder (22). The crushing cone assembly (3) includes a meshing cone (31), a main shaft (32), and a shaft seat (36). The shaft seat (36) is fixed relative to the inner wall of the machine base (1). The main shaft (32) is eccentrically installed inside the shaft seat (36). The meshing cone (31) is installed on the top of the main shaft (32). The power wheel (4) is connected to the main shaft (32) for transmission. The top cover shell (21) is installed on the machine base (1). The meshing cylinder (22) is fixed in the center of the top cover shell (21). The lower inner surface of the meshing cylinder (22) and the upper surface of the meshing cone (31) cooperate to communicate the meshing gap and crush the quartz sand (9) in the gap. The outer surface of the meshing cone (31) is provided with an airflow attitude adjustment structure. The airflow attitude adjustment structure changes the attitude of the quartz sand entering the meshing gap so that the long axis direction of the quartz sand tends to the circumferential direction with the main axis (32) as the axis. The crushing cone assembly (3) also includes a sealing swing block (33) and an air inlet pipe (37). The sealing swing block (33) is sleeved on the main shaft (32), and the upper surface of the sealing swing block (33) abuts against the lower surface of the meshing cone (31). The air inlet pipe (37) is connected to the lower side wall of the shaft seat (36). The main shaft (32) is provided with a core hole (321) extending upward from the bottom end. The core hole (321) is a blind hole. The main shaft (32) is provided with a side hole (322) on the side wall. The side hole (322) is located below the section where the main shaft (32) and the meshing cone (31) are installed. The meshing cone (31) is provided with a downward extending air groove (313) on the inner wall. The upper surface of the meshing cone (31) is divided into a meshing surface (311) and a guide surface (312). The guide surface (312) is located obliquely above the meshing surface (311). The air groove (313) extends from the top of the meshing cone (31) to at least the axial position at the guide surface (312). The meshing cone (31) is also provided with a number of air holes (314) around its circumference. The air holes (314) pass through the guide surface (312) and are tangential to the guide surface (312). The vent (314) has an upward tilt angle of 5~20°.

2. The quartz sand powdering equipment with impurity filtration function according to claim 1, characterized in that: The powder making equipment also includes a guide tube (23), which is set inside the top cover shell (21). The guide tube (23) is located above the meshing tube (22) and is in the shape of an inverted trumpet.

3. A quartz sand powdering device with impurity filtration function according to claim 2, characterized in that: The inner surface of the guide tube (23) is provided with a groove (231), which is spiral in shape.

4. A quartz sand powdering device with impurity filtration function according to claim 3, characterized in that: The spiral lower end of the groove (231) extends in the direction of the air outlet (314).

5. A quartz sand powdering device with impurity filtration function according to claim 1, characterized in that: The top cover assembly (2) is floatingly installed with the base (1), and a vertical lifting structure is provided between the top cover shell (21) and the base (1).

6. A quartz sand powdering device with impurity filtration function according to claim 1, characterized in that: The power wheel (4) is powered by a belt, and a flywheel is also provided at the end of the power wheel (4). The weight of the flywheel accounts for more than 40% of the weight of the rotating parts of the device.

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