A stirring type scrubbing machine for quartz sand production

Abstract

The utility model discloses a kind of agitating type scrubbing machines for quartz sand production, it is related to quartz sand production field, including scrubbing cylinder, support driving structure, pivot, first impeller, second impeller and third impeller, the support driving structure includes support and drive assembly, the support is fixedly arranged above scrubbing cylinder, the drive assembly is fixedly arranged on support, the pivot is rotatably arranged on support, the pivot one end is drivingly connected with drive assembly, the other end extends to scrubbing cylinder interior, a plurality of groups first impeller are fixedly arranged along the axial direction of pivot, and the first impeller includes alternately arranged first type impeller and second type impeller;The utility model is by the alternate arrangement of first impeller, utilizes the axial flow generated by blade inside and outside reverse torsion, forms the convection circulation of up and down stagger in scrubbing cylinder, so that quartz sand particle is fully mixed, violent collision in three-dimensional space, improves impurity stripping efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of quartz sand production, specifically a stirring scrubbing machine for quartz sand production. Background Technology

[0002] In the production and processing of quartz sand, scrubbing is a crucial step in removing impurities such as clay and iron oxides from the surface of the quartz sand, and its effectiveness directly affects the subsequent purification process and the quality of the final product. The agitated scrubbing machine, as the core equipment in this process, primarily uses agitation to cause quartz sand particles to collide and rub against each other in water, thereby removing surface impurities. Currently, most agitated scrubbing machines on the market adopt a traditional design with multiple sets of unidirectional or counter-directional impellers. These machines rely on impeller rotation to generate fluid motion during operation, but due to the simple impeller design, they often only create a relatively simple flow pattern.

[0003] For example, when using a unidirectional impeller, the material mainly flows unidirectionally along the axial or radial direction, easily forming dead zones within the scrubbing cylinder. This results in some quartz sand particles not fully participating in collisions, leading to uneven scrubbing effects. While using multiple sets of counter-current impellers can generate some reverse flow, the coordination between the impellers is not optimized, and fluid movement is mostly confined to local areas, making it difficult to achieve three-dimensional circulation mixing throughout the entire cylinder. This results in uneven distribution of quartz sand particles during scrubbing, insufficient collisions between particles, and incomplete removal of surface impurities. Furthermore, due to insufficient mixing, light impurities may float on the surface while heavy particles settle at the bottom, further reducing scrubbing efficiency. These problems often necessitate extended scrubbing times or increased energy consumption in traditional scrubbing machines to achieve a certain effect, yet still fail to guarantee consistent product quality. Utility Model Content

[0004] The purpose of this invention is to provide a stirring scrubbing machine for quartz sand production, in order to solve the problems of the single impeller structure and uneven material flow in the existing scrubbing machine, which leads to scrubbing dead corners and impurity residue, affecting product quality stability and production efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a stirring scrubbing machine for quartz sand production, comprising a scrubbing cylinder, a support and drive structure, a rotating shaft, a first impeller, a second impeller, and a third impeller;

[0006] The scrubbing cylinder includes a cylinder body, a feeding port, a discharging port, and an overflow port. The feeding port and the overflow port are respectively fixedly installed on the upper side wall of the cylinder body, and the discharging port is fixedly installed at the center of the bottom of the cylinder body.

[0007] The support drive structure includes a bracket and a drive assembly. The bracket is fixedly mounted above the scrubbing drum, and the drive assembly is fixedly mounted on the bracket. The rotating shaft is rotatably mounted on the bracket, with one end of the rotating shaft being connected to the drive assembly and the other end extending into the drum body.

[0008] The first impeller is provided in several groups, and the several groups of the first impeller are fixedly arranged along the axial direction of the rotating shaft. The first impeller includes alternating first-type impellers and second-type impellers.

[0009] The second impeller is fixedly installed at one end of the rotating shaft near the discharge port, and the third impeller is fixedly installed at one end of the rotating shaft near the overflow port.

[0010] Preferably, both the first type of impeller and the second type of impeller include a first bushing and a plurality of first blades; the first bushing is fixedly sleeved on the rotating shaft, and the plurality of first blades are evenly fixedly disposed on the outer periphery of the first bushing;

[0011] The first blade is a torsion blade, and the torsion angle of the first blade changes continuously in the radial direction. The blade mounting angle of the end of the first blade near the first bushing is opposite to that of the end away from the first bushing. The inner part of the first blade of the first type of impeller generates an upward axial flow, and the outer part generates a downward axial flow. The inner part of the first blade of the second type of impeller generates a downward axial flow, and the outer part generates an upward axial flow.

[0012] Preferably, the drive assembly includes a drive component and a transmission unit. The drive component is fixedly mounted on the bracket, and the output shaft of the drive component is connected to the rotating shaft via the transmission unit.

[0013] Preferably, the second impeller includes a second bushing and a plurality of second blades;

[0014] The second bushing is fixedly sleeved on the rotating shaft, and several second blades are evenly fixedly arranged on the outer periphery of the second bushing;

[0015] The second blade is also a torsion blade, and the torsion angle of the second blade gradually changes from radial to horizontal. The second blade is used to generate an upward axial flow.

[0016] Preferably, the third impeller includes a third bushing and a plurality of third blades;

[0017] The third bushing is fixedly sleeved on the rotating shaft, and several third blades are evenly fixedly arranged on the outer circumference of the third bushing. The third blades are used to generate downward axial flow.

[0018] Preferably, the scrubbing drum further includes several brackets, and rubber shock-absorbing pads are fixedly installed at the bottom of the brackets.

[0019] Preferably, the first blade of the first impeller, the second blade of the second impeller, and the third blade of the third impeller are all arranged in a swept-back configuration.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. This utility model uses the alternating arrangement of the first impeller (first type and second type impeller) to generate axial flow by the reverse twisting of the inner and outer sides of the blades, forming an alternating convection circulation in the scrubbing cylinder, so that the quartz sand particles are fully mixed and violently collide in three-dimensional space. Compared with the traditional single impeller structure, it improves the impurity removal efficiency and solves the problems of uneven stirring and poor scrubbing effect of the existing device.

[0022] 2. This utility model achieves a complete material circulation without dead zones by combining a second impeller (pushing downwards and dispersing upwards) and a third impeller (pressing downwards). The second impeller prevents material from settling at the bottom, and the third impeller prevents material from floating at the top, thus improving material utilization and solving the problems of material settling and floating in existing devices. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0024] Figure 1 This is a first-view perspective three-dimensional structural diagram of an embodiment of the present utility model;

[0025] Figure 2 This is a second-view perspective three-dimensional structural diagram provided for an embodiment of the present utility model;

[0026] Figure 3 A three-dimensional structural diagram of the rotating shaft and its associated components provided in an embodiment of this utility model.

[0027] In the picture:

[0028] 1. Scrubbing cylinder; 101. Cylinder body; 102. Overflow port; 103. Feed port; 104. Discharge port; 2. Support; 3. Drive assembly; 301. Drive component; 302. Transmission unit; 4. Rotating shaft; 5. First impeller; 501. First bushing; 502. First blade; 6. Second impeller; 601. Second bushing; 602. Second blade; 7. Third impeller; 701. Third bushing; 702. Third blade; 8. Bracket. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0030] As attached Figure 1 To be continued Figure 3 As shown:

[0031] This utility model provides a stirring scrubbing machine for quartz sand production, including a scrubbing cylinder 1, a support and drive structure, a rotating shaft 4, a first impeller 5, a second impeller 6, and a third impeller 7. The scrubbing cylinder 1 includes a cylinder body 101, a feeding port 103, a discharge port 104, and an overflow port 102. The cylinder body 101 is made of stainless steel and has an inner diameter of 800-1500 mm and a height of 1200-2000 mm. The inner wall is polished to reduce material adhesion. The feeding port 103 is a 45° inclined square flange structure, which is fixedly installed on the upper side wall of the cylinder body 101 along with the overflow port 102. The overflow port 102 is 2 / 3 the height of the total height of the cylinder body 101 and is used to discharge wastewater and light impurities. The discharge port 104 is fixedly installed at the bottom center of the cylinder body 101 and is equipped with a manual gate valve to control the discharge. The support and drive structure includes a bracket 2 and a drive assembly 3. The bracket 2 is a portal steel structure. The structure is fixed to the ground foundation by bolts and is fixedly set above the scrubbing cylinder 1. The drive component 3 is fixedly set at the center of the crossbeam of the support 2 to provide stirring power. The rotating shaft 4 is a solid carbon steel shaft (diameter 80-150mm) and is rotatably set on the support 2 through a bearing seat. One end of the rotating shaft 4 is connected to the drive component 3 for transmission, and the other end extends into the cylinder 101, 300-500mm away from the bottom. The first impeller 5 is provided in 3-5 groups. Several groups of the first impeller 5 are fixedly set along the axial direction of the rotating shaft 4 with a spacing of 200-300mm. The first impeller 5 includes alternating first-type impellers and second-type impellers to realize material convection circulation. The second impeller 6 is fixedly set at the end of the rotating shaft 4 near the discharge port 104 to prevent the bottom material from settling. The third impeller 7 is fixedly set at the end of the rotating shaft 4 near the overflow port 102 to prevent the top material from floating.

[0032] During operation, the operator first adds quartz sand raw material and scrubbing liquid into the cylinder 101 through the feed port 103 (the liquid level is 5-10cm lower than the overflow port 102); the drive assembly 3 is started, driving the rotating shaft 4 and each impeller to rotate; the alternating structure of the first impeller 5 forms upper and lower convection, the second impeller 6 pushes the bottom material, and the third impeller 7 presses down the top material; the quartz sand collides violently in the circulation, and after impurities are stripped off, it is discharged from the overflow port 102 with the sewage; after completion, the discharge port 104 is opened to discharge the clean quartz sand; through the synergy of multiple impellers, the problems of uneven mixing and material deposition in traditional equipment are solved, and the efficiency of impurity stripping is improved.

[0033] As attached Figure 2 To be continuedFigure 3 As shown: In one embodiment of this utility model, both the first type of impeller and the second type of impeller include a first bushing 501 and a plurality of first blades 502; the first bushing 501 is a steel cylinder, which is fixedly sleeved on the rotating shaft 4 by a key connection to ensure that the impeller rotates synchronously with the rotating shaft 4; a plurality of first blades 502 (4-6) are evenly welded and fixedly disposed on the outer circumference of the first bushing 501, made of wear-resistant cast iron, and coated with a 0.5-1mm tungsten carbide coating, which improves the wear resistance by more than 2 times; the first blades 502 are torsion blades, which twist... The rotation angle changes continuously along the radial direction. The blade mounting angle of the end of the first blade 502 near the first bushing 501 and the end away from the first bushing 501 are opposite in direction. The inner side of the first blade 502 of the first type of impeller is twisted by 30-45° to generate an upward axial flow, and the outer side is twisted by -30 to -45° to generate a downward axial flow. The inner side of the first blade 502 of the second type of impeller is twisted by -30 to -45° to generate a downward axial flow, and the outer side is twisted by 30-45° to generate an upward axial flow, forming staggered convection.

[0034] During operation, after the operator starts the drive assembly 3, the first type of impeller rotates, pushing the material upward on the inner side and pressing the material downward on the outer side; the adjacent second type of impeller rotates synchronously, pressing the material downward on the inner side and pushing the material upward on the outer side; the axial flow formed by the two types of impellers intersects in the cylinder 101, causing the quartz sand particles to collide and rub violently in three-dimensional space; through the reverse twisting design of the blades, the uniformity of material mixing is improved, impurities are stripped more thoroughly, and the problem of dead corners in the traditional single impeller mixing is solved.

[0035] As attached Figure 1 To be continued Figure 2 As shown: In one embodiment of this utility model, the drive assembly 3 includes a drive component 301 and a transmission unit 302. The drive component 301 is a variable frequency motor with a power of 5.5-15kW, which is fixed on the bracket 2 by bolts. The speed can be adjusted by a frequency converter (50-300r / min) to adapt to the scrubbing requirements of different particle sizes of quartz sand (such as fine sand and medium sand). The transmission unit 302 is a combination of a synchronous belt and a coupling to achieve speed reduction and torque increase (reduction ratio 5:1-10:1), ensuring that the rotating shaft 4 obtains sufficient torque to drive the impeller to rotate and avoid overload shutdown.

[0036] During operation, the operator first adjusts the speed of the drive unit 301 according to the particle size of the quartz sand: 250-300 r / min for fine sand to enhance shearing force; 150-200 r / min for medium sand to avoid energy waste. After starting the drive unit 301, the power is transmitted to the rotating shaft 4 via the transmission unit 302, which reduces speed and increases torque, driving each impeller to rotate stably. Through frequency conversion speed regulation and speed reduction and torque increase, the equipment has stronger adaptability and more stable operation, solving the problem of poor adaptability of traditional fixed-speed equipment.

[0037] As attached Figure 2 To be continued Figure 3 As shown: In one embodiment of this utility model, the second impeller 6 includes a second bushing 601 and a plurality of second blades 602; the second bushing 601 is a steel cylinder, which is fixedly sleeved on the rotating shaft 4 by a key connection and rotates synchronously with the rotating shaft 4; a plurality of second blades 602 (4-6) are uniformly welded and fixedly disposed on the outer circumference of the second bushing 601, and the material is the same as that of the first blade 502 to ensure wear resistance; the second blades 602 are also torsion blades, with the torsion angle gradually changing to the horizontal (0°) along the radial direction, the inner part being torsion 45-60° to generate an upward axial flow to push the bottom deposited material, and the outer part being horizontally disposed, mainly playing a horizontal dispersion role to avoid material accumulation; the second impeller 6 is 300-500mm away from the bottom of the cylinder 101, and acts precisely on the easily deposited area.

[0038] During operation, after the staff starts the equipment, the second impeller 6 rotates with the shaft 4. The upward axial flow on the inner side pushes the quartz sand deposited at the bottom of the cylinder 101 upward, preventing the material from clumping. The horizontal dispersion effect on the outer side spreads the upward-pushed material to the surrounding areas, evenly integrating it into the material flow in the middle. Through the "upward push + dispersion" design, the amount of material deposited at the bottom is reduced by more than 90%, ensuring that all materials in the cylinder participate in the scrubbing and improving the material utilization rate.

[0039] As attached Figure 2 To be continued Figure 3 As shown: In one embodiment of this utility model, the third impeller 7 includes a third bushing 701 and several third blades 702; the third bushing 701 is a steel cylinder, which is fixedly sleeved on the rotating shaft 4 by a key connection, and is located 10-20cm below the liquid surface inside the cylinder 101; several third blades 702 (4-6) are evenly welded and fixedly disposed on the outer circumference of the third bushing 701, and the material is the same as that of the first blade 502 to ensure wear resistance and durability; the third blades 702 are used to generate downward axial flow, and adopt a torsion blade design, with the inner part torsion -45 to -60° and the outer part torsion -15 to -30°, forming a gradient downward thrust to prevent the top material from floating.

[0040] During operation, after the operator starts the equipment, the third impeller 7 rotates, generating a strong downward axial flow on the inner side, which pushes the light quartz sand floating near the liquid surface downward; a weak downward axial flow is generated on the outer side, guiding the material at the top to flow towards the middle; the two thrusts work together to make the material at the top quickly integrate into the convection circulation in the middle, avoiding insufficient scrubbing due to prolonged floating; through the gradient thrust design, the scrubbing rate of the material at the top is improved, solving the problem of dead corners in the scrubbing of material at the top of traditional equipment.

[0041] As attached Figure 1 To be continued Figure 2 As shown: In one embodiment of this utility model, the scrubbing drum 1 further includes several brackets 8 (3-4). The brackets 8 are made of angle steel welded together and are fixedly installed on the outer periphery of the bottom of the drum body 101 by bolts. They are evenly distributed to ensure that the drum body 101 is subjected to balanced force. A rubber shock-absorbing pad (10-15mm thick) is fixedly installed at the bottom of the bracket 8. The rubber material is nitrile rubber with a hardness of 50-60HA. It can absorb more than 60% of the vibration during equipment operation and reduce noise (the noise value is reduced from 85dB to below 65dB), preventing vibration from being transmitted to the ground and causing the equipment to shift.

[0042] During operation, the staff first installs the equipment on a flat ground, and the rubber shock-absorbing pads of the bracket 8 are in close contact with the ground. After the equipment is started, the vibration generated by the rotation of the shaft 4 and the impeller is absorbed by the rubber shock-absorbing pads, and the cylinder 101 remains stable without significant shaking. Through the shock absorption design, the equipment's operational stability is improved by 50%, the service life of components such as bearings and couplings is extended, and the workshop working environment is improved.

[0043] As attached Figure 2 To be continued Figure 3 As shown: In one embodiment of this utility model, the first blade 502 of the first impeller 5, the second blade 602 of the second impeller 6, and the third blade 702 of the third impeller 7 are all arranged in a swept-back configuration, forming an angle of 15-30° with the rotation direction of the rotating shaft 4. Compared with the traditional radially arranged blades, the swept-back design can reduce fluid resistance by more than 30%, reduce the energy consumption of the drive component 301, and enhance the shearing effect of the blades on the material, which is more conducive to the removal of impurities from the surface of quartz sand. The blade sweep angle can be adjusted according to the particle size of the material. When processing coarse sand, a 30° angle is used to enhance the shearing force, and when processing fine sand, a 15° angle is used to reduce resistance.

[0044] During operation, after the operator starts the equipment, the swept blades rotate, and the material flows along the swept direction of the blades, reducing resistance and energy consumption. At the same time, the swept structure makes the shearing action of the blades on the material more concentrated, and the collision between quartz sand particles is more intense, improving the efficiency of impurity removal. Through the swept design, the dual effects of energy saving and efficient scrubbing are achieved, solving the problems of high energy consumption and insufficient shearing force of traditional radial blades.

[0045] Working principle: The operator first checks the status of each component of the equipment: confirming that there is no residual material on the inner wall of the cylinder 101, the gate valve of the discharge port 104 is closed, and all impellers are securely connected. Then, the operator adds quartz sand raw material (such as medium sand) and scrubbing fluid (clean water or acidic solution) into the cylinder 101 through the feed port 103, controlling the level of the scrubbing fluid to be 1025-10cm below the overflow port to avoid overflow.

[0046] Based on the quartz sand particle size, the speed of the drive unit 301 (variable frequency motor) is adjusted to 150-200 r / min via a frequency converter. The drive unit 301 is started, and the power is transmitted to the rotating shaft 4 after being reduced and increased in torque by the transmission unit 302, causing the rotating shaft 4 to rotate synchronously with each impeller. At this time, the third impeller 7 (top) rotates, and the strong downward axial flow on the inner side pushes the quartz sand floating on the liquid surface downward, while the weak downward axial flow on the outer side guides the upper material to flow towards the middle. The first impeller 5 (3-5 groups) in the middle rotate alternately. The inner side of the first type of impeller pushes upward and the outer side presses downward, while the inner side of the second type of impeller presses downward and the outer side pushes upward, forming an alternating convection cycle, which drives the quartz sand particles to collide and rub violently in three-dimensional space, stripping away surface impurities. The second impeller 6 (bottom) rotates, pushing the bottom deposited material upward on the inner side and dispersing the material horizontally on the outer side to avoid agglomeration and deposition.

[0047] During the scrubbing process, impurities mix with wastewater and are discharged from overflow port 102. Workers can judge the scrubbing effect by observing the clarity of the wastewater discharged from overflow port 102. If the wastewater remains turbid, the scrubbing time can be appropriately extended (e.g., 5-10 minutes). After the wastewater becomes clear, the drive unit 301 is closed, and the gate valve of discharge port 104 is opened to discharge the cleaned quartz sand into the collection container.

[0048] After the material is discharged, close the gate valve of the discharge port 104, and new raw materials can be added for the next round of scrubbing. If it is necessary to stop the machine, add clean water into the cylinder 101, start the equipment to clean the inner wall and impeller, discharge the wastewater after cleaning, and finally cut off the power to complete the entire quartz sand scrubbing process.

[0049] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A stirring-type scrubbing machine for quartz sand production, characterized in that: It includes a scrubbing cylinder (1), a support drive structure, a rotating shaft (4), a first impeller (5), a second impeller (6), and a third impeller (7); The scrubbing cylinder (1) includes a cylinder body (101), a feeding port (103), a discharge port (104), and an overflow port (102). The feeding port (103) and the overflow port (102) are respectively fixedly installed on the upper side wall of the cylinder body (101), and the discharge port (104) is fixedly installed at the bottom center of the cylinder body (101). The support drive structure includes a bracket (2) and a drive assembly (3). The bracket (2) is fixedly mounted above the scrubbing drum (1), and the drive assembly (3) is fixedly mounted on the bracket (2). The rotating shaft (4) is rotatably mounted on the bracket (2). One end of the rotating shaft (4) is connected to the drive assembly (3) for transmission, and the other end extends into the inside of the drum (101). The first impeller (5) is provided with several groups, and the several groups of first impellers (5) are fixedly arranged along the axial direction of the rotating shaft (4). The first impeller (5) includes alternating first type impellers and second type impellers. The second impeller (6) is fixedly disposed at one end of the rotating shaft (4) near the discharge port (104), and the third impeller (7) is fixedly disposed at one end of the rotating shaft (4) near the overflow port (102).

2. The agitation-type scrubbing machine for quartz sand production according to claim 1, characterized in that: Both the first type of impeller and the second type of impeller include a first bushing (501) and a plurality of first blades (502); the first bushing (501) is fixedly sleeved on the rotating shaft (4), and the plurality of first blades (502) are evenly fixedly disposed on the outer periphery of the first bushing (501); The first blade (502) is a torsion blade, and the torsion angle of the first blade (502) changes continuously in the radial direction. The blade mounting angle of the end of the first blade (502) near the first bushing (501) is opposite to that of the end away from the first bushing (501). The inner part of the first blade (502) of the first type of impeller generates an upward axial flow, and the outer part generates a downward axial flow. The inner part of the first blade (502) of the second type of impeller generates a downward axial flow, and the outer part generates an upward axial flow.

3. The agitation-type scrubbing machine for quartz sand production according to claim 2, characterized in that: The drive assembly (3) includes a drive component (301) and a transmission unit (302). The drive component (301) is fixedly mounted on the bracket (2). The output shaft of the drive component (301) is connected to the rotating shaft (4) through the transmission unit (302).

4. The agitation-type scrubbing machine for quartz sand production according to claim 3, characterized in that: The second impeller (6) includes a second bushing (601) and a plurality of second blades (602). The second bushing (601) is fixedly sleeved on the rotating shaft (4), and several second blades (602) are evenly fixedly arranged on the outer periphery of the second bushing (601); The second blade (602) is also a torsion blade, and the torsion angle of the second blade (602) gradually changes from radial to horizontal. The second blade (602) is used to generate an upward axial flow.

5. The agitator-type scrubbing machine for quartz sand production according to claim 4, characterized in that: The third impeller (7) includes a third bushing (701) and several third blades (702). The third bushing (701) is fixedly sleeved on the rotating shaft (4), and several third blades (702) are evenly fixedly arranged on the outer periphery of the third bushing (701). The third blades (702) are used to generate downward axial flow.

6. The agitation-type scrubbing machine for quartz sand production according to claim 5, characterized in that: The scrubbing drum (1) also includes several brackets (8), and the bottom of each bracket (8) is fixedly provided with a rubber shock-absorbing pad.

7. The agitation-type scrubbing machine for quartz sand production according to claim 6, characterized in that: The first blade (502) of the first impeller (5), the second blade (602) of the second impeller (6) and the third blade (702) of the third impeller (7) are all arranged in a swept-back manner.

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