Winnowing sand making device

Abstract

The invention relates to the technical field of sand making, and discloses a winnowing sand making device which comprises a fixing frame and a collecting box, a combined powder concentrator base is arranged on the fixing frame, a machine body is arranged on the combined powder concentrator base, a draught fan is arranged on the machine body, a connecting channel is arranged on the draught fan, and a bag type dust collector is installed in the collecting box. The inner wall of the machine body is rotationally connected with a first side grading partition plate through a torsional spring, the inner wall of the machine body is rotationally connected with a second side grading partition plate through a torsional spring, and the inner wall of the machine body is fixedly connected with an outer cone plate. The modulus and fineness requirements of coarse sand, medium sand and fine sand of the device can be improved, particulate matter can continue to be subjected to air separation of airflow, and the air separation speed of the device to the medium sand can be further improved.

Description

Technical Field

[0001] This invention relates to the field of sand making technology, specifically to an air-classification sand making device. Background Technology

[0002] The background technology of air classification sand making equipment stems from the problems of low particle size classification accuracy, difficulty in controlling stone powder content, and serious loss of fine sand in traditional sand making processes. Traditional wet sand making consumes a lot of water and is prone to environmental pollution, while dry screening is prone to screen clogging and low classification efficiency. As the quality requirements of manufactured sand increase, there is a need for equipment that can efficiently separate sand and stone powder. Air classification technology, because it relies on airflow classification, can reduce water consumption and accurately control the particle size distribution of finished sand. It has gradually become an important solution to the above problems, promoting the research and development and application of air classification sand making equipment.

[0003] Patent CN204052160U discloses a wind-classified sand making device that uses wind power to select manufactured sand of different particle sizes, effectively reducing the powder content in manufactured sand. This patent includes a wind separation device, a vibrating conveyor, a crusher, a powder recovery tank, a bucket elevator, a dust collector, and a PLC controller. The aforementioned wind-classified sand making device has the following advantages: it can classify manufactured sand products according to customer needs through PLC control, controlling the particle size of the products and solving the problems of uneven gradation and high powder content in existing manufactured sand products; it can adopt a tower-type structure, which has advantages such as simple and compact structure, small footprint, and reduced sand making costs, making it possible to achieve secondary wind classification of materials, enhancing the effect of wind separation, and improving the accuracy of wind classification.

[0004] However, when the above-mentioned device is in use, it is difficult to simultaneously separate medium sand while dispersing large, medium and small particles of the material. This results in a decrease in the separation speed of the device, which affects the subsequent separation efficiency. Screening still requires screening devices. It cannot meet the modulus and fineness requirements of coarse sand, medium sand and fine sand. In addition, the sand contains a lot of stone powder. Therefore, an air-classification sand making device is proposed to solve the above-mentioned problems. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an air-classification sand making device in response to the shortcomings of the prior art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: an air-classifying sand making device, including a fixed frame and a collection box, a combined air classifier base is provided on the fixed frame, an organic body is provided on the combined air classifier base, a fan is provided on the organic body, a connecting channel is provided on the fan, a bag filter is installed in the collection box, a side classifying partition one is rotatably connected to the inner wall of the organic body by a torsion spring, a second side classifying partition two is rotatably connected to the inner wall of the organic body by a torsion spring, and an outer cone plate is fixedly connected to the inner wall of the organic body. A rotating column is rotatably connected to the inner wall of the plate. A motor is installed inside the outer cone plate. A fixed plate is installed inside the machine body. A cage-type rotor and stationary blades are installed on the fixed plate. A beater is fixedly connected to the circumferential surface of the rotating column. A reciprocating screw is rotatably connected to the inner wall of the beater. A roller is fixedly connected to the circumferential surface of the reciprocating screw. A T-block is movably connected to the circumferential surface of the reciprocating screw. A scraper is fixedly connected to the inner wall of the T-block. A pushing mechanism for pushing the medium sand out is provided on the circumferential surface of the machine body. The inner wall of the machine body is equipped with a discharge mechanism for fine sand particles. A feed inlet is located on the circumferential surface of the machine body, and a coarse sand outlet is located at the bottom of the combined classifier base. A conveying pipe is installed on the machine body, connecting the combined classifier base to the machine body. The machine body is connected to a blower, which in turn is connected to a connecting channel. The connecting channel is connected to a collection box. The rotating column is fixedly connected to the output end of the motor. The rollers are in contact with the machine body. The T-block is slidably connected to the inner wall of the clapper plate, and the scraper is in contact with the clapper plate. The scraper is used for... Scraping off the medium sand from the surface of the clapper can shake the discharged material, accelerate the dispersion speed of large, medium and small particles, and improve the modulus and fineness requirements of coarse, medium and fine sand in the device. Medium particles are hit by the clapper during the rotation of the clapper due to their own volume, causing them to fall onto the arc surface of the outer cone plate and the inner wall of the machine. The scraper can scrape off any particles that may be attached to the surface of the clapper, allowing the particles to continue to be air-separated by the airflow, which can further improve the air separation speed of the device for medium sand.

[0007] Preferably, the pushing mechanism includes a discharge channel, an electric push rod, a first fixed column, a connecting rod, a sliding column, an L-shaped rod, a push plate, an elastic telescopic rod, a protrusion, a second fixed column, and a sealing plate. The discharge channel is fixedly connected to the inner wall of the machine body. The electric push rod is fixedly connected to the circumferential surface of the machine body. The first fixed column is fixedly connected to the telescopic end of the electric push rod. The connecting rod is rotatably connected to the circumferential surface of the first fixed column. The sliding column is slidably connected to the inner wall of the discharge channel. The L-shaped rod is fixedly connected to the circumferential surface of the sliding column. The push plate is fixedly connected to the right side of the L-shaped rod. The elastic telescopic rod is fixedly connected to the inner wall of the push plate. The protrusion is fixedly connected to the telescopic end of the elastic telescopic rod. The second fixed column is fixedly connected to the inner wall of the protrusion. The sealing plate is fixedly connected to the circumferential surface of the second fixed column. The pushing mechanism also includes a scraper ring and an inclined plate. The scraper ring is fixedly connected to the inner wall of the T-block, the inclined plate is fixedly connected to the bottom of the clapper, the connecting rod is rotatably connected to the circumferential surface of the sliding column, the connecting rod is in contact with the discharge channel, the protrusion is in contact with the discharge channel, the sealing plate is in contact with the push plate, the push plate is in contact with the discharge channel, the sealing plate is in contact with the discharge channel, the scraper ring is in contact with the machine body, and the scraper ring is used to clean the medium sand remaining on the inner wall of the machine body. The inclined plate is in contact with the outer cone plate, the sealing plate seals the opening of the push plate, and the push plate can push the medium sand in the discharge channel to improve the discharge speed and efficiency of the medium sand, avoid the medium sand from being blocked at the entrance of the discharge channel when it is discharged, and can push the medium sand remaining on the arc surface of the outer cone plate. The inclined plate can push the medium sand to the discharge channel, which can accelerate the discharge speed of the medium sand and improve the sorting effect of the medium sand.

[0008] Preferably, the discharge mechanism includes an inner cone, a fine material inlet, a pipe, a second fixed plate, and a rubber plate. The inner cone is fixedly connected to the bottom of the first fixed plate, the fine material inlet is opened on the surface of the first fixed plate, the pipe is fixedly connected to the bottom of the inner cone, the second fixed plate is fixedly connected to the circumferential surface of the rotating column, and the rubber plate is rotatably connected to the inner wall of the second fixed plate via a torsion spring. The discharge mechanism also includes a vertical plate and an arc plate. The vertical plate is fixedly connected to the inner wall of the scraper ring, the arc plate is fixedly connected to the top of the vertical plate, the pipe contacts the machine body, and the rubber plate is connected to the pipe... The rubber plate contacts the pipe and is used to accelerate the discharge speed of fine particles in the pipe. The arc plate contacts the machine body, so that the rubber plate can strike the pipe to vibrate during the rotation process, which can increase the discharge speed of fine sand, improve the sorting effect of the device, clean the inner wall of the machine body, extend the service life of the device, accelerate the cleaning effect of the device, improve the sorting quality of the device, and eliminate the need for screening devices. It can meet the modulus and fineness requirements of coarse sand, medium sand and fine sand, and the stone powder content in the sand is very low, far below the national standard.

[0009] The present invention, by adopting the above technical solution, can bring the following beneficial effects: 1. This air-classifying sand making device, through the coordinated movement of the fixed frame, combined classifier base, machine body, fan, connecting channel, collection box, bag filter, side classifier I, side classifier II, outer cone plate, rotating column, fixed plate I, cage rotor, stationary blades, clapper, reciprocating screw, roller, T-block, and scraper, can shake the discharged material, accelerate the dispersion speed of large, medium, and small particles, and improve the modulus and fineness requirements of coarse, medium, and fine sand. Medium particles are impacted by the clapper due to their size during the rotation of the clapper, causing them to fall onto the arc surface of the outer cone plate and the inner wall of the machine body. The scraper can scrape off any particles that may be attached to the clapper surface, allowing the particles to continue to be air-classified, further improving the air-classification speed of medium sand.

[0010] 2. This air-separated sand making device utilizes the coordinated movement of a discharge channel, an electric push rod, a fixed column one, a connecting rod, a sliding column, an L-shaped rod, a push plate, an elastic telescopic rod, a protrusion, a fixed column two, a sealing plate, a scraper ring, and an inclined plate. The sealing plate seals the opening of the push plate, while the push plate pushes the medium sand in the discharge channel, improving the discharge speed and efficiency of the medium sand and preventing blockage at the entrance of the discharge channel during discharge. It can also push the medium sand remaining on the outer conical plate arc surface, and the inclined plate can push the medium sand to the discharge channel, accelerating the discharge speed of the medium sand and improving the sorting effect of the medium sand.

[0011] 3. This air-separated sand making device utilizes the coordinated movement of the inner cone, fine material inlet, pipe, fixed plate II, rubber plate, vertical plate, and arc plate. During rotation, the rubber plate vibrates by striking the pipe, increasing the discharge speed of fine sand and improving the separation effect. It also cleans the inner wall of the machine, extending its service life, accelerating the cleaning process, and enhancing the separation quality. It eliminates the need for screening devices and meets the modulus and fineness requirements for coarse, medium, and fine sand. Furthermore, the stone powder content in the sand is very low, far below national standards. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a half-sectional view of the body structure of the present invention; Figure 3 This is a schematic diagram of the outer cone plate structure of the present invention; Figure 4 This is a schematic diagram of the cage rotor structure of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of the structure at point A in the middle; Figure 6 For the present invention Figure 4 Enlarged view of the structure at point B in the middle; Figure 7 This is a schematic diagram of the actuation mechanism of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of the structure at point C; Figure 9 This is a schematic diagram of the material discharge mechanism of the present invention; Figure 10 For the present invention Figure 9 Enlarged view of the structure at point D.

[0013] In the diagram: 1. Fixed frame; 2. Combined air classifier base; 3. Machine body; 4. Fan; 5. Connecting channel; 6. Collection box; 7. Pushing mechanism; 8. Discharge mechanism; 9. Bag filter; 10. Side classifying partition 1; 11. Side classifying partition 2; 12. Outer cone plate; 13. Rotating column; 14. Fixed plate 1; 15. Cage rotor; 16. Stationary blade; 17. Pattering plate; 18. Reciprocating screw; 19. Roller; 20. T-block; 21. Scraper; 70 1. Discharge channel; 702. Electric push rod; 703. Fixed column one; 704. Connecting rod; 705. Sliding column; 706. L-bar; 707. Push plate; 708. Elastic telescopic rod; 709. Protrusion; 710. Fixed column two; 711. Sealing plate; 712. Scraper ring; 713. Inclined plate; 801. Inner cone; 802. Fine material inlet; 803. Pipe; 804. Fixed plate two; 805. Rubber plate; 806. Vertical plate; 807. Arc plate. Detailed Implementation

[0014] 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.

[0015] Please see Figures 1-10One embodiment of the present invention is as follows: an air-classifying sand making device, comprising a fixed frame 1 and a collection box 6, a combined air classifier base 2 mounted on the fixed frame 1, an organic body 3 mounted on the combined air classifier base 2, a fan 4 mounted on the organic body 3, a connecting channel 5 mounted on the fan 4, a bag filter 9 installed in the collection box 6, a side grading partition 10 rotatably connected to the inner wall of the organic body 3 via a torsion spring, a second side grading partition 11 rotatably connected to the inner wall of the organic body 3 via a torsion spring, and an outer cone plate 12 fixedly connected to the inner wall of the organic body 3. A rotating column 13 is rotatably connected to the inner wall of the cone plate 12. A motor is installed inside the outer cone plate 12. A fixed plate 14 is installed inside the machine body 3. A cage rotor 15 is installed on the fixed plate 14. A stationary blade 16 is installed on the fixed plate 14. A beater 17 is fixedly connected to the circumferential surface of the rotating column 13. A reciprocating screw 18 is rotatably connected to the inner wall of the beater 17. A roller 19 is fixedly connected to the circumferential surface of the reciprocating screw 18. A T-block 20 is movably connected to the circumferential surface of the reciprocating screw 18. A scraper 21 is fixedly connected to the inner wall of the T-block 20. Before the device is used, the material from the sand making machine is fed into the feed inlet of the dual-channel static classifier via a conveying device. During the falling process, the material will squeeze the side classifying baffle 10 and the side classifying baffle 21 to rotate at an angle. At the same time, the material is dispersed into large and small particles under the layer impact of the reaction force of the side classifying baffle 10 and the side classifying baffle 21. At the same time as the material enters, the blower 4 and the cage rotor 15 will start to generate airflow. Under the action of the airflow, medium and small particles of sand and stone powder can be separated from the material. At this time, large particles of sand can be discharged as coarse sand from the coarse sand outlet opened at the bottom of the combined classifier base 2. When the material comes into contact with the side classifying baffle 10 and the side classifying baffle 21, the side classifying baffle 10 and the side classifying baffle 21 will be reset by their own torsion springs. During this process, the discharged material can be shaken, which can accelerate the dispersion speed of large, medium and small particles of the material and improve the modulus and fineness requirements of the coarse sand, medium sand and fine sand of the device. The circumferential surface of the machine body 3 is provided with a pushing mechanism 7 for pushing medium sand to be discharged. The inner wall of the machine body 3 is provided with a discharge mechanism 8 for discharging fine sand particles. The circumferential surface of the machine body 3 is provided with a feed inlet. The bottom of the combined classifier base 2 is provided with a coarse sand outlet. A conveying pipe is installed on the machine body 3. The combined classifier base 2 is connected to the machine body 3. The machine body 3 is connected to the blower 4. The blower 4 is connected to the connecting channel 5. The connecting channel 5 is connected to the collection box 6. The rotating column 13 is fixedly connected to the output end of the motor. The roller 19 is in contact with the machine body 3. The T block 20 is slidably connected to the inner wall of the clapper plate 17. The scraper 21 is in contact with the clapper plate 17 and is used to scrape off the medium sand on the surface of the clapper plate 17. After the device discharges large sand particles, medium and small sand particles rise to another separation chamber due to their own gravity and the airflow. At this time, the motor starts, and the output of the motor drives the rotating column 13 to rotate. The rotation of the rotating column 13 drives the beater 17 to rotate. During the rotation, the beater 17 can disperse the medium and small sand particles that have arrived in this area. In this process, small sand particles and stone powder will continue to rise with the airflow through the surface openings of the stationary blades 16, while medium particles will be beaten by the beater 17 due to their own volume during the rotation. This causes medium-sized particles to fall onto the arc surface of the outer cone plate 12 and the inner wall of the machine body 3. Simultaneously, as the tapping plate 17 rotates, it drives the reciprocating screw 18 to rotate. The rotation of the reciprocating screw 18 drives the roller 19 to rotate, and the reciprocating screw 18 also drives the T-block 20 to rotate along with the rotating column 13. During rotation, the roller 19 experiences friction due to contact with the machine body 3. At this time, the roller 19 rotates around the rotating column 13 while simultaneously rotating itself. The rotation of the roller 19 drives the reciprocating screw 18 to rotate synchronously. The rotation of rod 18 will cause T-block 20 to rotate, but at this time T-block 20 is limited by the clapper plate 17. The clapper plate 17 causes T-block 20 to move up and down only through the reciprocating groove on the surface of the reciprocating screw 18 during the rotation of the reciprocating screw 18. The movement of T-block 20 will drive the scraper 21 to move back and forth first. The scraper 21 can scrape off any particles that may be attached to the surface of the clapper plate 17, allowing the particles to continue to be air-separated by the airflow, which can further improve the air separation speed of the device for medium sand, and ensure that there is basically no stone powder in the coarse sand and that the coarse sand will not be mixed into the medium sand. In the process of separating fine sand and stone powder, the material from the sand making machine is fed into the feed inlet of the dual-channel static classifier via a conveying device. During the fall, it is dispersed by the layer-by-layer impact of the classifying baffles on the air inlet side and the air outlet side. Under the action of airflow, medium and small particles of sand and stone powder are separated from the material, while large particles of sand are discharged from the coarse sand outlet as coarse sand. Since the dual-channel static classifier has two classification chambers inside, the separated medium and small particles of sand can be further classified into medium sand, fine sand and stone powder. The reasonable flow field distribution in the two classification chambers can ensure that there is basically no stone powder in the coarse sand and that the coarse sand will not mix into the medium sand, fine sand and stone powder. Overall working principle: It can shake the discharged material, which can accelerate the dispersion speed of large, medium and small particles of the material, and improve the modulus and fineness requirements of coarse sand, medium sand and fine sand of the device. During the rotation of the clapper plate 17, medium particles will be hit by the clapper plate 17 due to their own volume, causing the medium particles to fall on the arc surface of the outer cone plate 12 and the inner wall of the machine body 3. The scraper 21 can scrape off the particles that may be attached to the surface of the clapper plate 17, and allow the particles to continue to be air-separated by the airflow, which can further improve the air separation speed of the device for medium sand.

[0016] Please see Figures 1-10 Based on the above embodiments, in another embodiment of the present invention, the pushing mechanism 7 includes a discharge channel 701, an electric push rod 702, a first fixed column 703, a connecting rod 704, a sliding column 705, an L-shaped rod 706, a push plate 707, an elastic telescopic rod 708, a protrusion 709, a second fixed column 710, and a sealing plate 711. The discharge channel 701 is fixedly connected to the inner wall of the machine body 3, the electric push rod 702 is fixedly connected to the circumferential surface of the machine body 3, and the first fixed column 703 is fixedly connected to the telescopic end of the electric push rod 702. The connecting rod 704 is rotatably connected to the circumferential surface of the fixed column 703, the sliding column 705 is slidably connected to the inner wall of the discharge channel 701, the L-rod 706 is fixedly connected to the circumferential surface of the sliding column 705, the push plate 707 is fixedly connected to the right side of the L-rod 706, the elastic telescopic rod 708 is fixedly connected to the inner wall of the push plate 707, the protrusion 709 is fixedly connected to the telescopic end of the elastic telescopic rod 708, the second fixed column 710 is fixedly connected to the inner wall of the protrusion 709, and the sealing plate 711 is fixedly connected to the circumferential surface of the second fixed column 710. When the device is started, the medium-sized particles fall onto the arc surface of the outer cone plate 12 and are discharged through the discharge channel 701. At this time, the electric push rod 702 is activated, and its telescopic end drives the fixed column 703 to move downward. The movement of the fixed column 703 drives the connecting rod 704 to move. During the movement, the connecting rod 704 changes its angle synchronously. The rotation of the connecting rod 704 drives the sliding column 705 to slide on the inner wall of the discharge channel 701. The sliding of the sliding column 705 drives the L-rod 706 to move. The movement of the L-rod 706 drives the push plate 707 to move. The movement of the push plate 707 drives the elastic telescopic rod 708 to move. The movement of the elastic telescopic rod 708 will drive the protrusion 709 to move. When the protrusion 709 moves, it will be guided by the arc surface of the inner wall of the discharge channel 701. At this time, the elastic telescopic rod 708 will be reset by its own reset characteristics. The elastic telescopic rod 708 can drive the protrusion 709 to move. The movement of the protrusion 709 will drive the fixed column 710 to move. The movement of the fixed column 710 will drive the sealing plate 711 to move. At this time, the sealing plate 711 will seal the opening of the push plate 707. At the same time, the push plate 707 can push the medium sand in the discharge channel 701, improve the discharge speed and efficiency of the medium sand, and avoid the medium sand from being blocked at the entrance of the discharge channel 701 when it is discharged. The pushing mechanism 7 also includes a scraper ring 712 and an inclined plate 713. The scraper ring 712 is fixedly connected to the inner wall of the T block 20, the inclined plate 713 is fixedly connected to the bottom of the clapper plate 17, the connecting rod 704 is rotatably connected to the circumferential surface of the sliding column 705, the connecting rod 704 is in contact with the discharge channel 701, the protrusion 709 is in contact with the discharge channel 701, the sealing plate 711 is in contact with the push plate 707, the push plate 707 is in contact with the discharge channel 701, the sealing plate 711 is in contact with the discharge channel 701, the scraper ring 712 is in contact with the machine body 3, and the scraper ring 712 is used to clean the medium sand that remains on the inner wall of the machine body 3, and the inclined plate 713 is in contact with the outer cone plate 12. When the device is started, the T block 20 will drive the scraper ring 712 to move synchronously. The up and down movement of the scraper ring 712 can scrape the medium sand that is staying on the inner wall of the machine body 3 and drop it onto the surface of the outer cone plate 12. During the movement of the clapper plate 17, the movement of the clapper plate 17 will drive the inclined plate 713 to move synchronously. During the movement of the inclined plate 713, it can push the medium sand that is staying on the arc surface of the outer cone plate 12. The inclined plate 713 can push the medium sand to the discharge channel 701, which can speed up the discharge speed of the medium sand and improve the sorting effect of the medium sand. The discharge mechanism 8 includes an inner cone 801, a fine material inlet 802, a pipe 803, a second fixed plate 804, and a rubber plate 805. The inner cone 801 is fixedly connected to the bottom of the first fixed plate 14, the fine material inlet 802 is opened on the surface of the first fixed plate 14, the pipe 803 is fixedly connected to the bottom of the inner cone 801, the second fixed plate 804 is fixedly connected to the circumferential surface of the rotating column 13, and the rubber plate 805 is rotatably connected to the inner wall of the second fixed plate 804 by a torsion spring. When the device is started, fine sand and stone powder are conveyed through the airflow to the dynamic powder separation zone. During this process, some small sand particles fall into the inner cone 801 through the fine material inlet 802 under the action of the stationary blades 16 to complete the pre-separation. The remaining small sand particles and stone powder reach the dynamic powder separation zone. The material particles in this zone are mainly subjected to centrifugal force and gas drag force. The gas drag force on the stone powder is greater than the centrifugal force. After passing through the cage rotor 15, it is collected by the bag filter 9. The centrifugal force on the fine sand particles is greater than the gas drag force. The fine sand particles will fall into the inner cone 801 and fall out of the pipe 803 together with the above-mentioned fine materials. They can merge to form fine sand. At this time, the rotation of the rotating column 13 will drive the fixed plate 804 to rotate. The rotation of the fixed plate 804 will drive the rubber plate 805 to rotate. During the rotation, the rubber plate 805 can strike the pipe 803 to vibrate, which can increase the discharge speed of fine sand and improve the separation effect of the device. The discharge mechanism 8 also includes a vertical plate 806 and an arc plate 807. The vertical plate 806 is fixedly connected to the inner wall of the scraper ring 712, and the arc plate 807 is fixedly connected to the top of the vertical plate 806. The pipe 803 is in contact with the machine body 3, and the rubber plate 805 is in contact with the pipe 803. The rubber plate 805 is used to accelerate the discharge speed of fine particles in the pipe 803. The arc plate 807 is in contact with the machine body 3. When the device is started, as the scraper ring 712 rotates and rises, it drives the vertical plate 806 to rotate and move. The rotation of the vertical plate 806 drives the arc plate 807 to rotate and move. During this movement, the arc plate 807 can clean the particles from the inner wall of the machine body 3, which can improve the service life of the device, speed up the cleaning effect, and improve the sorting quality of the device. There is no need for screening with a screening device. It can meet the modulus and fineness requirements of coarse sand, medium sand and fine sand, and the stone powder content in the sand is very low, far below the national standard. Overall working principle: The pusher plate 707 can push the medium sand in the discharge channel 701, improve the discharge speed and efficiency of the medium sand, and avoid the medium sand from being blocked at the entrance of the discharge channel 701 during discharge. It can push the medium sand that is staying on the arc surface of the outer cone plate 12. The inclined plate 713 can push the medium sand to the discharge channel 701, which can accelerate the discharge speed of the medium sand and improve the sorting effect of the medium sand. During the rotation, the rubber plate 805 can strike the pipe 803 to vibrate, which can increase the discharge speed of fine sand and improve the sorting effect of the device. It can clean the particles on the inner wall of the machine body 3, which can extend the service life of the device, accelerate the cleaning effect of the device, and improve the sorting quality of the device. There is no need for screening of the screening device. It can meet the modulus and fineness requirements of coarse sand, medium sand and fine sand, and the stone powder content in the sand is very low, far below the national standard.

[0017] This invention provides an air-classification sand making device. Many methods and approaches exist for implementing this technical solution; the above description is merely a preferred embodiment of the invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention. All components not explicitly stated in this embodiment can be implemented using existing technology.

Claims

1. An air-classified sand making device, comprising a fixed frame (1) and a collection box (6), characterized in that: The fixed frame (1) is provided with a combined air classifier base (2), the combined air classifier base (2) is provided with an organic body (3), the organic body (3) is provided with a fan (4), the fan (4) is provided with a connecting channel (5), the collection box (6) is installed with a bag filter (9), the inner wall of the organic body (3) is rotatably connected to a side grading partition (10) by a torsion spring, the inner wall of the organic body (3) is rotatably connected to a side grading partition (2) by a torsion spring, the inner wall of the organic body (3) is fixedly connected to an outer cone plate (12), and the inner wall of the outer cone plate (12) is rotatably connected to a rotating column (13). The outer cone plate (12) is equipped with a motor, the body (3) is equipped with a fixing plate (14), the fixing plate (14) is equipped with a cage rotor (15), the fixing plate (14) is equipped with a stationary blade (16), the circumferential surface of the rotating column (13) is fixedly connected with a beater (17), the inner wall of the beater (17) is rotatably connected with a reciprocating screw (18), the circumferential surface of the reciprocating screw (18) is fixedly connected with a roller (19), the circumferential surface of the reciprocating screw (18) is movably connected with a T-block (20), and the inner wall of the T-block (20) is fixedly connected with a scraper (21).

2. The air-classification sand making device according to claim 1, characterized in that: The circumferential surface of the machine body (3) is provided with a pushing mechanism (7) for pushing medium sand to be discharged. The inner wall of the machine body (3) is provided with a discharge mechanism (8) for discharging fine sand particles. The circumferential surface of the machine body (3) is provided with a feed inlet. The bottom of the combined classifier base (2) is provided with a coarse sand outlet. The machine body (3) is equipped with a conveying pipe. The combined classifier base (2) is connected to the machine body (3). The machine body (3) is connected to the blower (4). The blower (4) is connected to the connecting channel (5). The connecting channel (5) is connected to the collection box (6). The rotating column (13) is fixedly connected to the output end of the motor.

3. The air-classification sand making device according to claim 2, characterized in that: The roller (19) contacts the machine body (3), the T block (20) is slidably connected to the inner wall of the clapper (17), the scraper (21) contacts the clapper (17), and the scraper (21) is used to scrape off the medium sand on the surface of the clapper (17).

4. The air-classification sand making device according to claim 3, characterized in that: The pushing mechanism (7) includes a discharge channel (701), an electric push rod (702), a first fixed column (703), a connecting rod (704), a sliding column (705), an L-shaped rod (706), a push plate (707), an elastic telescopic rod (708), a protrusion (709), a second fixed column (710), and a sealing plate (711). The discharge channel (701) is fixedly connected to the inner wall of the machine body (3). The electric push rod (702) is fixedly connected to the circumferential surface of the machine body (3). The first fixed column (703) is fixedly connected to the telescopic end of the electric push rod (702). The connecting rod (704) rotates to connect... The sliding column (705) is slidably connected to the inner wall of the discharge channel (701) and the L rod (706) is fixedly connected to the circumferential surface of the sliding column (705). The push plate (707) is fixedly connected to the right side of the L rod (706). The elastic telescopic rod (708) is fixedly connected to the inner wall of the push plate (707). The protrusion (709) is fixedly connected to the telescopic end of the elastic telescopic rod (708). The second fixed column (710) is fixedly connected to the inner wall of the protrusion (709). The sealing plate (711) is fixedly connected to the circumferential surface of the second fixed column (710).

5. The air-classification sand making device according to claim 4, characterized in that: The pushing mechanism (7) also includes a scraper ring (712) and an inclined plate (713). The scraper ring (712) is fixedly connected to the inner wall of the T block (20), and the inclined plate (713) is fixedly connected to the bottom of the clapper (17).

6. The air-classification sand making device according to claim 5, characterized in that: The connecting rod (704) is rotatably connected to the circumferential surface of the sliding column (705). The connecting rod (704) is in contact with the discharge channel (701). The protrusion (709) is in contact with the discharge channel (701). The sealing plate (711) is in contact with the push plate (707). The push plate (707) is in contact with the discharge channel (701). The sealing plate (711) is in contact with the discharge channel (701). The scraper ring (712) is in contact with the machine body (3). The scraper ring (712) is used to clean the medium sand that remains on the inner wall of the machine body (3). The inclined plate (713) is in contact with the outer cone plate (12).

7. The air-classification sand making device according to claim 6, characterized in that: The discharge mechanism (8) includes an inner cone (801), a fine material inlet (802), a pipe (803), a second fixed plate (804), and a rubber plate (805). The inner cone (801) is fixedly connected to the bottom of the first fixed plate (14). The fine material inlet (802) is opened on the surface of the first fixed plate (14). The pipe (803) is fixedly connected to the bottom of the inner cone (801). The second fixed plate (804) is fixedly connected to the circumferential surface of the rotating column (13). The rubber plate (805) is rotatably connected to the inner wall of the second fixed plate (804) by a torsion spring.

8. The air-classification sand making device according to claim 7, characterized in that: The discharge mechanism (8) also includes a vertical plate (806) and an arc plate (807). The vertical plate (806) is fixedly connected to the inner wall of the scraper ring (712), and the arc plate (807) is fixedly connected to the top of the vertical plate (806).

9. The air-classification sand making device according to claim 8, characterized in that: The pipe (803) is in contact with the machine body (3), the rubber plate (805) is in contact with the pipe (803), and the rubber plate (805) is used to accelerate the discharge speed of fine particles in the pipe (803), and the arc plate (807) is in contact with the machine body (3).

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