An intelligent high-purity quartz sand making machine

Abstract

The invention discloses an intelligent high-purity quartz sand making machine, which relates to the technical field of sand making machines and comprises an outer shell, wherein a cylindrical inner shell is arranged inside the outer shell, a lower grinding table is arranged on the top of the inner shell, and an upper grinding table rotatably installed in the outer shell is arranged directly above the lower grinding table, the upper grinding table is driven to rotate by a motor, the upper surface of the lower grinding table is conical, a feed inlet is arranged at the axis of the upper grinding table, an inclined bearing plate is arranged between the outer shell and the inner shell, and a discharge port located at the lowest point of the bearing plate is arranged on the outer shell. This intelligent high-purity quartz sand making machine performs impact trimming on the material by arranging an impact plate and an impact knife block, so as to trim the edges or corners on the surface of the material to make it closer to roundness, and by arranging upper and lower grinding tables and different movement modes of the two, the material is trimmed in a kneading manner and discharged after trimming to make it more roundness.

Description

Technical Field

[0001] The invention relates to the technical field of sand making machines, and in particular to an intelligent high-purity quartz sand making machine. Background Art

[0002] The quartz stone is transported by the vibrating feeder to the jaw crusher for the first crushing. The obtained material then enters the impact crusher for the next step of crushing to obtain smaller material particles. After being screened by the circular vibrating screen, those that meet the requirements enter the sand making machine for fine crushing. This is the quartz sand making process.

[0003] When the sand making machine is used for fine crushing, the most common one is the double roller sand making machine, which squeezes and crushes the material through the gap between the two rollers. Fine materials of a specific mesh size can be obtained by adjusting the gap. However, there is a problem with this type of sand making machine, that is, the fine materials produced by the extrusion method have poor particle shape, and the particles are randomly crushed, resulting in the fine materials being multi-sided, and even strip-shaped particles under certain conditions. For this reason, we propose an intelligent high-purity quartz sand making machine. Summary of the invention

[0004] The purpose of the present invention is to provide an intelligent high-purity quartz sand making machine to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an intelligent high-purity quartz sand making machine, comprising an outer shell, a cylindrical inner shell is arranged inside the outer shell, a lower grinding table is arranged on the top of the inner shell, an upper grinding table rotatably installed in the outer shell is arranged directly above the lower grinding table, the upper grinding table is driven to rotate by a motor, the upper surface of the lower grinding table is conical, a feed port is provided at the axis center of the upper grinding table, an inclined bearing plate is installed between the outer shell and the inner shell, and a discharge port is provided on the outer shell, which is located at the lowest point of the bearing plate.

[0006] Preferably, the lower grinding table is slidably arranged on the upper surface of the inner shell body, and at least three groups of mounting shafts are rotatably connected to the inner shell body along the vertical direction, and a connecting shaft rotatably connected to the mounting shaft is fixedly connected to the lower surface of the lower grinding table, and the connecting shaft is offset and parallel to the axis of the mounting shaft, and a circular array of connecting shafts is distributed on the lower grinding table, and any one of the mounting shafts is driven by a motor to make the lower grinding table rotate in the plane.

[0007] Preferably, at least two groups of impact plates are fixedly installed on the upper surface of the lower grinding table. The impact plates are arc-shaped as a whole and are distributed in a circular array on the lower grinding table. A drive shaft driven by a motor is rotatably installed on the inner shell, and an impact knife block is installed on the top of the drive shaft. The impact knife block knocks the falling material away when it rotates. There is a gap between two adjacent groups of impact plates, and the falling material hits the impact plate when it is knocked away by the impact knife block at any position of the fall.

[0008] Preferably, the impact surface of the impact plate is provided with a spirally arranged inner groove with a semi-circular cross-section, the inner groove surface is frosted, and the surface of the inner groove spirals around its axis as a whole along its spiral direction.

[0009] Preferably, an annular protrusion is provided on the upper surface of the lower grinding table, and the upper surface of the lower grinding table within the range of the annular protrusion is a rolling area. The lower grinding table is provided with a plurality of blanking holes distributed along the outer side of the annular protrusion, and the outer diameter edge area of ​​the upper surface of the lower grinding table is a grinding area.

[0010] Preferably, the spiral direction of the inner groove is consistent with the rotation direction of the drive shaft.

[0011] Preferably, the lower grinding table is connected to the upper surface of the inner shell by ball rolling.

[0012] Preferably, the planar rotation direction of the lower grinding table is consistent with the planar rotation direction of the upper grinding table.

[0013] Preferably, the vertical distance from the lowest point of the surface of the inner groove on a single impact plate to the upper surface of the lower grinding table is greater than the diameter of the material particles entering from the feed inlet.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention provides an impact plate and an impact blade block to impact and trim the material, thereby trimming the edges or corners on the surface of the material to make it closer to roundness.

[0016] The present invention provides an upper and lower grinding table, and the two have different motion modes, so that the material can be trimmed in a kneading manner, and discharged after trimming, so that it is more rounded;

[0017] The rotary motion of the lower grinding table in the present invention, in conjunction with the annular boss, can separate the powder in the material from particles of suitable size, thereby facilitating better collection of qualified material particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of the half-section outer shell of the present invention;

[0020] Figure 3 It is a schematic diagram of the half-section structure of the inner shell and the upper grinding table and the lower grinding table of the present invention;

[0021] Figure 4 for Figure 3 A schematic diagram of the structure of the middle A area;

[0022] Figure 5 for Figure 3 Schematic diagram of the top view;

[0023] Figure 6 It is a schematic diagram of the structure connecting the upper and lower parts of the lower grinding table;

[0024] Figure 7 It is a schematic diagram of the top view of the structure of the upper grinding table and the impact plate;

[0025] Figure 8 One of the implementations of installing the shaft and connecting the shaft;

[0026] Fig. 9 It is a schematic diagram of the front view of the end face of one side of the impact plate;

[0027] Fig.10 It is a formal structural diagram of the action surface of the impact plate;

[0028] Fig.11 The material trajectory diagram of the grinding area when the upper grinding table moves alone and the two grinding tables move simultaneously;

[0029] Fig.12 It is the critical state motion trajectory of the impact knife block impacting the material between two adjacent impact plates.

[0030] In the figure: 1-outer shell; 101-discharge port; 2-inner shell; 201-mounting shaft; 202-driving shaft; 2021-impact knife block; 3-lower grinding table; 301-connecting shaft; 302-impact plate; 3021-inner groove; 303-annular protrusion; 3a-rolling area; 3b-grinding area; 304-dropping hole; 4-upper grinding table; 401-feeding port; 5-carrying plate. DETAILED DESCRIPTION

[0031] 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.

[0032] See also Figure 1-Figure 7The present invention provides a technical solution: an intelligent high-purity quartz sand making machine, comprising an outer shell 1 fixedly mounted on a base, the outer shell is an annular cylindrical shape with two ends connected, and is fastened to the base by bolts, a cover plate is fixedly connected to the top of the outer shell 1, an inner shell 2 is coaxially arranged with the outer shell 1, and is also fixed to the base, an upper grinding table 4 and a lower grinding table 3 are both disc-shaped structures, and the axes of the two are colinear, a feed port 401 is arranged on the upper grinding table 4, and the feed port 401 is located at the center of the upper grinding table 4, a hopper is arranged on the cover plate corresponding to the feed port 401, and the bottom surface of the upper grinding table 4 is aligned with the upper surface of the lower grinding table 3 An outflow channel for materials is formed between the surfaces. The upper surface of the lower grinding table 3 is conical, descending from the axis to the outer diameter surface. The conical upper surface facilitates the material particles to enter from the feed port 401 and roll to the outer edge and then roll out. The top of the upper grinding table 4 is connected to the motor transmission fixed on the inner surface of the outer shell 1 through a belt, and the upper grinding table 4 is driven to rotate by the motor. The bearing plate 5 is an annular plate, which is tilted in the space between the outer shell 1 and the inner shell 2, and the highest point of the bearing plate 5 is located below the lower grinding table 3. The inclined bearing plate 5 is convenient for gathering the fallen materials in one piece, and then discharging them from the discharge port 101.

[0033] The material enters the feed port 401 from the hopper and diffuses to the surroundings under the action of the conical surface of the lower grinding table 3. At the same time, the upper grinding table 4 rotates, and the shaping area formed by the lower grinding table 3 is matched. The two grinding table surfaces clamp the particles, and the rotation of the upper grinding table and the diffusion movement of the material processing make the material finally form as follows Fig.11 The arc path shown in the figure and the non-linear motion cause the axis of the material particles rolling around the axis to change continuously, so that the edges and corners of the material are squeezed out during the rolling process to form relatively rounded material particles.

[0034] See also Figure 3 , Figure 6 , Figure 8 and Fig.11 The inner surface of the inner shell 2 is fixedly mounted with a bracket, and at least three sets of mounting shafts 201 are rotatably connected to the bracket through bearings. The top of the mounting shaft 201 is rotatably connected to the connecting shaft 301, such as Figure 8 As shown, the connecting shaft 301 is fixed at the bottom of the lower grinding table 3, nested in the mounting shaft 201 or rotatably connected through a flange, and the two form an eccentric rotation. The connecting shaft 301 and the mounting shaft 201 are preferably arranged in three groups, and the connecting shafts 301 are arranged in a uniform circular array, and the three groups of eccentric directions of the matching mounting shafts 201 are consistent in the initial state, so that the three groups of structures can rotate synchronously without interference resulting in a situation where the movement cannot be achieved. Any one of the three mounting shafts 201 passes through the bracket and extends a certain length, and is connected to the motor through a belt at the lower end of the mounting shaft for driving.

[0035] The motor drives a mounting shaft 201 to rotate through a belt, thereby causing the connecting shaft 301 to rotate with the axis of the mounting shaft 201 as the rotation center, thereby driving the lower grinding table 3 to rotate in the plane. The other two sets of mounting shafts 201 produce balanced support and improve stability. The rotation of the lower grinding table 3 cooperates with the plane rotation of the upper grinding table 4 to form a kneading action, producing Fig.11 The trajectory of the rotation action in the right view of the figure produces different motion trajectories according to the rotation direction of the lower grinding table 3. Fig.11 The movement directions of the lower grinding table 3 and the upper grinding table 4 are the same, that is, both are clockwise or counterclockwise, Fig.11 In clockwise direction.

[0036] The lower grinding table 3 rotates in a plane, and when the material is squeezed and ground, a downward pressure is generated on the lower grinding table 3, so the inner shell 2 is supported. The sliding friction is large, so a ball is arranged on the top of the inner shell 2 to replace the sliding friction with rolling friction, thereby reducing mechanical loss.

[0037] See also Figure 3 , Figure 5 , Figure 6 , Figure 7 and Fig.12 , when viewed from above, the impact plate 302 is in an arc shape as a whole, and each impact plate 302 is distributed in a circular array, centered around the axis of the lower grinding table, and a gap is provided between adjacent ends of two adjacent impact plates 302 to facilitate the outflow of materials. The drive shaft 202 is rotatably installed on the bracket on the inner shell 2 through a bearing, and the upper end of the drive shaft 202 is fixedly connected to a turntable, and the impact knife block 2021 is installed on the turntable. Multiple groups of impact knife blocks 2021 are evenly distributed, and an avoidance hole for the drive shaft 202 is opened at the axis of the lower grinding table 3, so that the lower grinding table 3 will not collide with the drive shaft 202 during the rotational movement. A boss with a spherical top is also fixed on the top of the turntable. The boss prevents the material from piling up on the top of the turntable. The more the number of impact plates 302, the more gaps are generated, and the material can diffuse around. However, the larger the number, the smaller the action surface of a single impact plate 302. 5-10 groups are a better choice, and both aspects are balanced.

[0038] After the material enters the feed port 401, it is in a vertical falling state. After the impact of the impact blade block 2021, it generates a horizontal movement speed, thereby shooting toward the impact plate 302. In order to prevent the material from directly flying out from the gap between two adjacent impact plates 302, it is necessary to block the gap with the end of the previous impact blade block 2021 in the rotation direction of the impact blade block 2021, that is, the state is as follows: Fig.12As shown, it is the most critical impact point. When the impact point is exceeded, the material will directly impact the next impact plate 302. Before this critical impact point and at this impact point, the material will impact the previous impact plate 302, so it will not fly out from the gap. Fig.12 The situation shown is the state and path state of the direct front state of the impact blade block 2021. If the impact angle is changed, the angle and position of the impact plate 302 need to be adjusted accordingly. After the material is impacted and generates an initial horizontal velocity, the arc-shaped impact plate 302 contacts and impacts the material. Due to the centrifugal force, the material will initially rebound on the impact plate 302 and then begin to roll on the inner surface of the impact plate 302. During the impact and rolling process, the impact plate 302 impacts and trims the sharp protrusions on the surface of the material particles to achieve the purpose of shaping.

[0039] See also Fig. 9 and Fig.10 In an untreated state, when the material hits the impact plate 302 and then rebounds and tends to stabilize, it will basically move on the inner surface of the impact plate 302 in the form of sliding, which weakens the shaping effect. Therefore, an inner groove 3021 with a semi-annular cross-section is opened on the impact surface of the inner surface of the impact plate 302, and the surface of the inner groove surface 3021 is frosted to make it rough, so that the material is easy to roll. In order to better roll, the inner groove 3021 is spirally arranged in the circumferential direction. As shown in the figure, when the impact knife block 2021 is in a clockwise rotating state, the inner groove 3021 is arranged in a clockwise spiral ascending state, and further, the inner groove surface 3021 is not only spiral in the vertical direction, but also spirally designed in the length direction, that is, the inner surface of the inner groove 3021 is spiral along its axis. In the figure, because the pitch of the spiral is large, it is not obvious.

[0040] After the material hits, it generates horizontal kinetic energy and rolls on the impact plate 302. The kinetic energy is gradually consumed and it eventually falls to the upper surface of the lower grinding table 3. In order not to affect the movement of the particles that are still rolling, the vertical distance from the lowest point of the inner groove 3021 to the upper surface of the lower grinding table 3 is greater than the theoretical maximum diameter of the particles that can enter the interior.

[0041] See also Figure 3 , Figure 4 , Figure 6 and Figure 7When the material enters the upper surface of the lower grinding table 3, it will also be accompanied by a lot of powder. These powders do not meet the specifications of the particles and therefore need to be screened out. The powder spreads to the surroundings on the upper surface of the lower grinding table 3. By setting the annular protrusion 303, the vertical height of which is smaller than the diameter of the qualified particles, the material particles can roll and bounce but will not be hindered from spreading around, while the powder of the material will be hindered. Moreover, because the kinetic energy generated by the qualified material particles during rolling is relatively large, they will fly up when they hit the annular protrusion 303, forming a In the parabolic state, it rises when it bounces, jumps over the drop hole 304, and then falls and continues to slide to reach the grinding area 3b. The rolling area 3a is used to make the material particles roll a little more distance to generate enough kinetic energy. The corresponding upper grinding table 4 is only located in the grinding area 3b. The other areas are avoided upward. The material powder accumulates on the edge of the annular protrusion 303. With the planar gyratory motion of the lower grinding table 3, the powder is thrown around and passes over the annular protrusion 303, and then discharged from the drop hole 304, realizing the separation of powder and qualified particles.

[0042] The material particles enter the feed port 401 from the hopper, and spread to the surroundings under the action of the boss on the turntable. As the material continues to fall, it contacts the impact knife block 2021, is knocked away by the impact knife block 2021, and then hits the impact plate 302. After the impact, the material rebounds and hits again. As the kinetic energy decreases, it begins to roll and hit on the surface of the inner groove 3021, and continuously trims the edges and corners of the surface of the material particles until the kinetic energy of the material is consumed and falls to the upper surface of the lower grinding table 3. If it happens to be in the gap between the two impact plates 302, it will roll down directly. The material particles in the gap area will continue to roll down from the gap with the planar rotation of the lower grinding table 3, and the powder in the material will also flow out together. Under the action of the conical slope of the lower grinding table, the rolling potential energy of the material particles is converted into kinetic energy with a certain speed. After contacting the annular protrusion 303, it jumps up and falls on the grinding area 3b or a position close to the grinding area 3b. Because the rotation of the lower grinding table 3 will cause the gap between the lower grinding table 3 and the upper grinding table 4 to change within a certain range, it is convenient for the material particles to enter the grinding area 3b between the two, and then with the movement of the two, an action similar to rolling balls with both hands is produced. The difference is that the upper grinding table 4 is always rotating, because the general forward direction is determined, it will not keep turning in circles, and then secondary shaping is carried out before discharge. At the same time, the material powder will be restricted by the annular protrusion 303, and with the rotation of the lower grinding 3, it is regularly thrown out, and because of its small kinetic energy and limited throwing distance, it is discharged from the drop hole 304. The rotation of the lower grinding table 3 has three functions. The first is to facilitate the discharge of materials from the surrounding range of the impact plate 302. The second is to facilitate the separation of materials and powders. The third function is to produce secondary finishing. The grinding area 3b belongs to secondary finishing, and the powder produced will be relatively small, and a powder collection mechanism can be further set at the carrier plate 5.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent high-purity quartz sand making machine, comprising an outer shell (1), Features: A cylindrical inner shell (2) is arranged inside the outer shell (1), a lower grinding table (3) is arranged on the top of the inner shell (2), an upper grinding table (4) rotatably mounted in the outer shell (1) is arranged directly above the lower grinding table (3), the upper grinding table (4) is driven to rotate by a motor, the upper surface of the lower grinding table (3) is conical, a feed port (401) is provided at the axis of the upper grinding table (4), an inclined bearing plate (5) is installed between the outer shell (1) and the inner shell (2), and a discharge port (101) is provided on the outer shell (1) and is located at the lowest point of the bearing plate (5); The lower grinding table (3) is slidably arranged on the upper surface of the inner shell (2), and at least three groups of mounting shafts (201) are rotatably connected to the inner shell (2) in a vertical direction. A connecting shaft (301) rotatably connected to the mounting shaft (201) is fixedly connected to the lower surface of the lower grinding table (3). The connecting shaft (301) is parallel to the axis of the mounting shaft (201) and is staggered. The connecting shafts (301) are arranged in a circular array on the lower grinding table (3). Any one of the mounting shafts (201) is driven by a motor to cause the lower grinding table (3) to perform a planar rotary motion. At least two groups of impact plates (302) are fixedly mounted on the upper surface of the lower grinding table (3); the impact plates (302) are arc-shaped as a whole and are distributed in a circular array on the lower grinding table (3); a drive shaft (202) driven by a motor is rotatably mounted on the inner shell (2); an impact blade block (2021) is mounted on the top of the drive shaft (202); the impact blade block (2021) knocks falling materials away when rotating; there is a gap between two adjacent groups of impact plates (302); and falling materials hit the impact plates (302) when being knocked away by the impact blade block (2021) at any position of the falling material.

2. According to claim 1, an intelligent high-purity quartz sand making machine, Features: The impact surface of the impact plate (302) is provided with an inner groove (3021) arranged in a spiral shape and having a semi-circular cross section. The inner groove (3021) is frosted, and the surface of the inner groove (3021) spirals around its axis as a whole along its spiral direction.

3. According to claim 1, an intelligent high-purity quartz sand making machine, Features: An annular protrusion (303) is provided on the upper surface of the lower grinding table (3); the upper surface of the lower grinding table (3) within the range of the annular protrusion (303) is a rolling area (3a); a plurality of drop holes (304) distributed along the outer side of the annular protrusion (303) are opened on the lower grinding table (3); and the outer diameter edge area of ​​the upper surface of the lower grinding table (3) is a grinding area (3b).

4. An intelligent high-purity quartz sand making machine according to claim 2, Features: The spiral direction of the inner groove (3021) is consistent with the rotation direction of the drive shaft (202).

5. The intelligent high-purity quartz sand making machine according to claim 1, Features: The lower grinding table (3) is connected to the upper surface of the inner shell (2) by ball rolling.

6. The intelligent high-purity quartz sand making machine according to claim 1, Features: The planar rotation direction of the lower grinding table (3) is consistent with the planar rotation direction of the upper grinding table (4).

7. An intelligent high-purity quartz sand making machine according to claim 2, Features: The vertical distance from the lowest point of the surface of the inner groove (3021) on a single impact plate (302) to the upper surface of the lower grinding table (3) is greater than the diameter of the material particles entering through the feed port (401).

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