A feeding and screening device for quartz sand

Abstract

This invention belongs to the field of quartz sand screening, specifically a quartz sand feeding and screening device, including a removal box. An input pipe is fixedly installed at the top of the removal box. A cavity is formed inside the removal box. A central disk is rotatably connected to the top of the inner side of the removal box. Three equally spaced separating fan blades are arranged on the outer side of the central disk. An electromagnet is installed inside the separating fan blades. A switching assembly is provided between the electromagnet and a connected power source to control the on / off state of the electromagnet. A baffle is fixedly installed at the bottom of the inner side of the removal box. By setting the separating fan blades and the controllable electromagnet, quartz sand only needs to be fed into the removal box through the input pipe. Through the repeated rotation of the three separating fan blades, the iron-containing impurities in the quartz sand can be quickly and effectively removed. The process is smooth and uninterrupted, greatly improving the removal efficiency. It can be used in large-scale removal operations.

Description

Technical Field

[0001] This invention belongs to the field of quartz sand screening, specifically a quartz sand feeding and screening device. Background Technology

[0002] Quartz sand is quartz particles produced by crushing and processing quartz stone. Quartz stone is a non-metallic mineral, a hard, wear-resistant, and chemically stable silicate mineral, whose main mineral component is SiO2.

[0003] Quartz sand is extracted from the natural environment and often contains iron filings. To ensure the quality of quartz sand products, it is necessary to remove the iron impurities and screen out qualified quartz sand.

[0004] A Chinese patent with publication number CN214077778U discloses a quartz sand feeding and screening device, including a main body, a feed inlet, a magnetic suction device, a damping device, a vibrating motor, and a screen. The main body is equipped with vibrating motors on both sides. The magnetic suction rod is energized through a circuit, and the magnetic suction rod itself uses its own electromagnetic force to perform magnetic filtration of the filtered quartz sand, which can effectively remove iron minerals mixed in with the quartz sand, thus improving the practicality and multifunctionality of the device.

[0005] Existing screening devices have a relatively simple structure, making it difficult to screen quartz sand quickly and effectively. They are not up to the task in large-scale screening operations and require a lot of energy during the screening process, resulting in low practicality.

[0006] Therefore, the present invention provides a feeding and screening device for quartz sand. Summary of the Invention

[0007] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0008] The technical solution adopted by this invention to solve its technical problem is as follows: A quartz sand feeding and screening device of this invention includes a removal box, an input pipe fixedly installed at the top of the removal box, a cavity opened on the inner side of the removal box, a central disk rotatably connected to the inner side of the removal box near the top, three equally spaced separating fan blades arranged on the outer side of the central disk, an electromagnet arranged on the inner side of the separating fan blades, a switching assembly arranged between the electromagnet and a connected power supply, the switching assembly being used to control the on / off state of the electromagnet, and a baffle fixedly installed at the bottom inner side of the removal box. By setting the separating fan blades and the controllable electromagnet, quartz sand only needs to be input into the removal box through the input pipe, allowing the quartz sand to interact with the input pipe... The top surface of the lower separating fan blades contacts the electromagnet, which is then energized and magnetic, effectively adsorbing iron-containing impurities from the quartz sand. The separating fan blades rotate under the impact of the quartz sand. As the separating fan blades tilt, unadsorbed quartz sand falls to one side of the baffle. Due to inertia, the separating fan blades continue to rotate. When they reach the other side of the baffle, a switching assembly de-energizes the electromagnet, causing the adsorbed iron impurities to move to the other side of the baffle under gravity. Through the repeated rotation of the three separating fan blades, the iron-containing impurities in the quartz sand can be removed quickly and effectively. The process is smooth and uninterrupted, greatly improving the impurity removal efficiency, making it suitable for large-scale impurity removal applications.

[0009] Preferably, the baffle is vertically arranged and located on one side of the center of the impurity removal box, while the feed pipe is located on the other side of the center of the impurity removal box. During operation, in conjunction with the baffle, when the separating fan blades are quickly rotated to the top, the magnetism of the electromagnet is eliminated. This arrangement allows the filtered quartz sand to have enough space to fall onto one side of the baffle, while the filtered iron impurities can fall onto the top surface of the adjacent separating fan blades from a height. At this time, the top surface of the adjacent separating fan blades is inclined, which ensures that the iron impurities fall smoothly onto the other side of the baffle.

[0010] Preferably, a plurality of contact blocks are fixedly installed on one side of the separating fan blade. The side with the contact blocks fixedly installed faces upward when rotated to the bottom of the input pipe. The contact blocks are conical in shape, and the volume of the contact blocks gradually increases from one end near the central disk to the other end. During operation, the arrangement of the contact blocks not only increases the contact area between the quartz sand and the separating fan blade, but also, during the tilting process of the separating fan blade, when the quartz sand flows, the upper layer of quartz sand will also pass through the gaps of the contact blocks, which can adsorb the iron impurities on the inner side again, thereby further improving the iron impurity removal effect.

[0011] Preferably, the top and bottom surfaces of the separating fan blades are both concave arc-shaped. A ratchet is fixedly installed on one side of the central disc. The ratchet is located in the side wall of the impurity removal box and is rotatably connected to the side wall. A pawl is provided on the outer side of the ratchet. The pawl is rotatably connected to the impurity removal box and meshes with the ratchet. During operation, the concave arc-shaped design on both sides of the separating fan blades increases the volume of quartz sand that can be collected and reduces the problem of quartz sand splashing everywhere when falling in. The concave design on the bottom allows iron impurities to flow more smoothly downward on the arc surface when passing through, reducing the problem of iron impurity residue. The ratchet and pawl design allows the central disc to rotate only clockwise, reducing the amount of iron impurities falling into the finished quartz sand in the final stage.

[0012] Preferably, the switching assembly includes a squeezing ball, and a sliding groove is provided on the inner side of the separating fan blade. The squeezing ball is slidably connected to the sliding groove. A pressing button is fixedly installed at the end of the sliding groove near the electromagnet. The pressing button is used to control the energization state of the electromagnet and the power supply. During operation, as the separating fan blade moves, when the separating fan blade is below the input tube and in a horizontal state, the sliding groove is in an inclined state. At this time, the squeezing ball slides down under the action of gravity and squeezes the pressing button, energizing the electromagnet and allowing the adsorption of iron impurities to proceed normally. When the separating fan blade is about to reach the top, the squeezing ball will disengage from the pressing button under the action of gravity, disconnecting the circuit and eliminating the adsorption effect. Through this setting, the mechanical triggering and disconnection effect is achieved without setting up a complex program control, greatly reducing the problem of program failure leading to equipment malfunction.

[0013] Preferably, a slider is fixedly connected to one end of the separating fan blade near the central disk. Three sets of T-shaped slots are provided on the outer side of the central disk. The slider is T-shaped, and the length of the slot is greater than the length of the slider. The slider is slidably connected to the central disk through the slot. Two sets of springs are fixedly connected between the slider and the inner wall of the slot. Several protrusions are fixedly installed on the inner wall of the impurity removal box. These protrusions movably fit against the outer side of the separating fan blade. During operation, the slots and slider allow the separating fan blade to slide horizontally parallel on the central disk. Simultaneously, the protrusions and springs ensure that the separating fan blade continuously contacts the protrusions during movement, causing it to oscillate horizontally. This not only makes the filtered quartz sand fall more easily but also facilitates the fall of iron impurities, reducing residue on the outer side of the separating fan blade. It also makes the compression ball more sensitive to changes in gravity direction, reducing the problem of the compression ball not moving in the accurate position. Furthermore, it allows the quartz sand to oscillate evenly when falling into the separating fan blade, reducing the problem of insufficient contact caused by central accumulation.

[0014] Preferably, the impurity removal box has an internal interlayer. Two sets of rotating shafts are rotatably connected to the inner side of the interlayer. Short rods and long rods are fixedly installed on the outer side of the rotating shafts, arranged symmetrically. An adsorption block is fixedly installed at one end of the short rod, and an impact ball is fixedly installed at one end of the long rod. Two through holes are formed between the interlayer and the internal cavity of the impurity removal box. A spring is fixedly connected between the long rod and the impurity removal box. During operation, the arrangement of the rotating shafts, long rods, and short rods forms a lever structure. When a magnetic separating fan blade passes the position of the adsorption block at one end of the short rod, it pulls the short rod to rotate. After the separating fan blade rotates away, the spring pulls the long rod and the impact ball back, allowing the impact ball to temporarily disengage from the through hole under inertia and impact other separating fan blades. This effectively amplifies the vibration effect of the separating fan blades, further improving the effect of the separating fan blades in discharging quartz sand and iron impurities, and also assists in the movement of the compression ball.

[0015] Preferably, one of the through holes is located slightly to one side directly below the central disk, and the other through hole is located slightly above one side at the same horizontal position as the central disk. During operation, the positions of the two through holes are coordinated to ensure that the impact ball can accurately contact the side of the separating fan blade. The impact points are: the location where the separating fan blade tilts down to discharge quartz sand and the location where the electromagnet is de-energized. This targeted approach enhances the vibration effect and further improves the effect of discharging quartz sand and iron impurities outward.

[0016] Preferably, a positioning sleeve is fixedly installed on the inner wall between the interlayer and the cavity of the impurity removal box. The positioning sleeve is cylindrical, and the adsorption block is slidably connected to the positioning sleeve. There is a gap between the adsorption block and the positioning sleeve. During operation, the positioning sleeve can ensure the movement trajectory of the adsorption block and reduce the problem of the adsorption block shifting to other directions under the drive of the separation fan blade, which would cause the short rod to bend.

[0017] Preferably, an isolation pad is fixedly installed in the middle of the through hole. The isolation pad is made of elastic material. During operation, the isolation pad can not only reduce the problem of quartz sand entering the interlayer, but also act as a buffer to reduce the rigid collision between the separation fan blades and the impact ball, allowing the equipment to operate for a long time.

[0018] The beneficial effects of this invention are as follows:

[0019] 1. The quartz sand feeding and screening equipment of the present invention, by setting separation fan blades and controllable electromagnets, only requires feeding quartz sand into the impurity removal box through the feeding pipe. Through the repeated rotation of the three separation fan blades, the iron-containing impurities in the quartz sand can be removed quickly and effectively. The process is smooth and uninterrupted, which greatly improves the impurity removal efficiency.

[0020] 2. The quartz sand feeding and screening equipment of the present invention, with the addition of contact blocks, not only increases the contact area between the quartz sand and the separating fan blades, but also, during the tilting process of the separating fan blades, the upper layer of quartz sand will also pass through the gaps of the contact blocks, which can adsorb the iron impurities on the inner side again, thereby further improving the iron impurity removal effect. Attached Figure Description

[0021] The invention will now be further described with reference to the accompanying drawings.

[0022] Figure 1 This is a perspective view of the present invention;

[0023] Figure 2 This is a cross-sectional view of the impurity removal box of the present invention;

[0024] Figure 3 This is a cross-sectional view showing the connection between the central disk and the separating fan blades of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the impurity removal box and the rotating shaft in this invention;

[0026] Figure 5 This is a cross-sectional view of the through groove and the isolation pad in this invention;

[0027] In the diagram: 1. Impurity removal box; 2. Input pipe; 3. Separating fan blade; 4. Through hole; 5. Protrusion; 6. Contact block; 7. Adsorption block; 8. Baffle; 9. Impact ball; 10. Long rod; 11. Spring 1; 12. Rotating shaft; 13. Short rod; 14. Positioning sleeve; 15. Isolation pad; 16. Central plate; 17. Ratchet; 18. Slide groove; 19. Squeezing ball; 20. Press button; 21. Spring 2; 22. Electromagnet; 23. Slider; 24. Pawl. Detailed Implementation

[0028] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0029] Example 1

[0030] like Figures 1 to 2As shown in the embodiment of the present invention, a quartz sand feeding and screening device includes a removal box 1. An input pipe 2 is fixedly installed at the top of the removal box 1. A cavity is formed inside the removal box 1. A central disk 16 is rotatably connected to the inner side of the removal box 1 near its top. Three equally spaced separating fan blades 3 are arranged on the outer side of the central disk 16. An electromagnet 22 is arranged inside the separating fan blades 3. A switching assembly is provided between the electromagnet 22 and a connected power source. The switching assembly is used to control the on / off state of the electromagnet 22. A baffle 8 is fixedly installed at the bottom inner side of the removal box 1. During operation, the quartz sand is taken from the natural environment and often contains iron filings. To ensure the quality of the quartz sand products, it is necessary to remove the iron impurities from the quartz sand and screen out qualified quartz sand. This is achieved by setting the separating fan blades... With the controllable electromagnet 22, quartz sand is simply fed into the impurity removal box 1 through the input pipe 2, allowing the quartz sand to contact the top surface of the separating fan blade 3 below the input pipe 2. At this time, the electromagnet 22 is energized and magnetic, which can effectively adsorb iron-containing impurities in the quartz sand. The separating fan blade 3 will rotate under the impact of the quartz sand. As the separating fan blade 3 tilts, the quartz sand that is not adsorbed will fall into one side of the baffle 8. Under the action of inertia, the separating fan blade 3 will continue to rotate. When it rotates to the other side of the baffle 8, the electromagnet 22 is de-energized and loses its magnetic force using the switching assembly, so that the adsorbed iron impurities will enter the other side of the baffle 8 under the action of gravity. Through the repeated rotation of the three separating fan blades 3, the effect of quickly and effectively removing iron-containing impurities from the quartz sand can be achieved. The process is smooth and uninterrupted, greatly improving the impurity removal efficiency.

[0031] like Figures 1 to 2 As shown, the baffle 8 is vertically arranged and located on one side of the center of the impurity removal box 1. The inlet pipe 2 is located on the other side of the center of the impurity removal box 1. During operation, in conjunction with the arrangement of the baffle 8, when the separating fan blade 3 is quickly rotated to the top, the magnetism of the electromagnet 22 is eliminated. Through this arrangement, the filtered quartz sand has enough space to fall into one side of the baffle 8, while the filtered iron impurities can fall to the top surface of the adjacent separating fan blade 3 from a high position. At this time, the top surface of the adjacent separating fan blade 3 is in an inclined state, which can ensure that the iron impurities fall smoothly into the other side of the baffle 8.

[0032] like Figures 1 to 2As shown, several contact blocks 6 are fixedly installed on one side of the separating fan blade 3. The side with the contact blocks 6 fixedly installed faces upward when rotated to below the input pipe 2. The contact blocks 6 are conical in shape, and the volume of the contact blocks 6 gradually increases from one end near the central disk 16 to the other end. During operation, the arrangement of the contact blocks 6 not only increases the contact area between the quartz sand and the separating fan blade 3, but also, during the tilting process of the separating fan blade 3, when the quartz sand flows, the upper layer of quartz sand will also pass through the gaps of the contact blocks 6, which can adsorb the iron impurities on the inner side again, further improving the iron impurity removal effect.

[0033] like Figures 1 to 2 As shown, the top and bottom surfaces of the separating fan blade 3 are both concave arc-shaped. A ratchet 17 is fixedly installed on one side of the central disk 16. The ratchet 17 is located in the side wall of the impurity removal box 1 and is rotatably connected to the side wall. A pawl 24 is provided on the outer side of the ratchet 17. The pawl 24 is rotatably connected to the impurity removal box 1 and meshes with the ratchet 17. During operation, the concave arc-shaped design on both sides of the separating fan blade 3 increases the volume of quartz sand that can be received and reduces the problem of quartz sand splashing everywhere when it falls in. The concave design at the bottom allows iron impurities to flow more smoothly downward on the arc surface when passing through, reducing the problem of iron impurity residue. The ratchet 17 and pawl 24 design allow the central disk 16 to rotate only clockwise, reducing the amount of iron impurities falling into the finished quartz sand in the final stage.

[0034] like Figure 3 As shown, the switching assembly includes a squeezing ball 19, and a sliding groove 18 is provided on the inner side of the separating fan blade 3. The squeezing ball 19 is slidably connected to the sliding groove 18. A pressing button 20 is fixedly installed at one end of the sliding groove 18 near the electromagnet 22. The pressing button 20 is used to control the energization state of the electromagnet 22 and the power supply. During operation, as the separating fan blade 3 moves, when the separating fan blade 3 is located below the input tube 2 and in a horizontal state, the sliding groove 18 is in an inclined state. At this time, the squeezing ball 19 slides down under the action of gravity and squeezes the pressing button 20, energizing the electromagnet 22 and allowing the adsorption of iron impurities to proceed normally. When the separating fan blade 3 is about to reach the top, the squeezing ball 19 will disengage from the pressing button 20 under the action of gravity, disconnecting the circuit and eliminating the adsorption effect. Through this setting, the mechanical triggering and disconnection effect is achieved without setting up a complex program control, which greatly reduces the problem of program failure causing the equipment to malfunction.

[0035] like Figure 3As shown, a slider 23 is fixedly connected to one end of the separating fan blade 3 near the central disk 16. Three sets of T-shaped slots are provided on the outer side of the central disk 16. The slider 23 is T-shaped, and the length of the slot is greater than the length of the slider 23. The slider 23 is slidably connected to the central disk 16 through the slot. Two sets of springs 21 are fixedly connected between the slider 23 and the inner wall of the slot. Several protrusions 5 are fixedly installed on the inner wall of the impurity removal box 1. The protrusions 5 are movably fitted against the outer side of the separating fan blade 3. During operation, in conjunction with the slot and slider 23, the separating fan blade 3 can move within the central disk 16. The separator slides horizontally on the center plate 16. With the help of the protrusion 5 and the spring 21, the separator blade 3 will continuously contact the protrusion 5 during its movement, causing the separator blade 3 to sway horizontally. This not only makes it easier for the filtered quartz sand to fall, but also makes it easier for the iron impurities to fall, reducing the residue on the outside of the separator blade 3. At the same time, it makes the extrusion ball 19 more sensitive to changes in the direction of gravity, reducing the problem of the extrusion ball 19 not moving in the accurate position. It also makes the quartz sand sway evenly when it falls into the separator blade 3, reducing the problem of insufficient contact caused by accumulation in the center.

[0036] like Figure 4 As shown, the impurity removal box 1 has an internal interlayer. Two sets of rotating shafts 12 are rotatably connected to the inner side of the interlayer. Short rods 13 and long rods 10 are fixedly installed on the outer side of each rotating shaft 12. The long rods 10 and short rods 13 are symmetrically arranged. An adsorption block 7 is fixedly installed at one end of the short rod 13, and an impact ball 9 is fixedly installed at one end of the long rod 10. Two through holes 4 are formed between the interlayer and the internal cavity of the impurity removal box 1. A spring 11 is fixedly connected between the long rod 10 and the impurity removal box 1. During operation, the spring 11, in conjunction with the rotating shafts 12, long rods 10, and short rods 13... The system is designed to form a lever structure. When the magnetic separating fan blade 3 passes the adsorption block 7 at one end of the short rod 13, it will pull the short rod 13 to rotate. After the separating fan blade 3 rotates away, in conjunction with the spring 11, it will pull the long rod 10 and the impact ball 9 back, allowing the impact ball 9 to temporarily disengage from the through hole 4 under inertia. This allows it to impact other separating fan blades 3, thereby effectively amplifying the vibration effect of the separating fan blade 3 and further improving the effect of the separating fan blade 3 in discharging quartz sand and iron impurities. It can also assist in the movement of the squeezing ball 19.

[0037] like Figure 2As shown, one of the through holes 4 is located directly below and slightly to one side of the central disk 16, and the other through hole 4 is located slightly above and to one side of the central disk 16 at the same horizontal position. During operation, the positions of the two through holes 4 are coordinated to ensure that the impact ball 9 can accurately contact the side of the separating fan blade 3. The impact points are: the position where the separating fan blade 3 tilts down to discharge quartz sand and the position where the electromagnet 22 is de-energized. This targeted approach enhances the vibration effect and further improves the effect of discharging quartz sand and iron impurities outward.

[0038] like Figure 4 As shown, a positioning sleeve 14 is fixedly installed on the inner wall between the interlayer and the cavity of the impurity removal box 1. The positioning sleeve 14 is cylindrical. The adsorption block 7 is slidably connected to the positioning sleeve 14, and there is a gap between the adsorption block 7 and the positioning sleeve 14. During operation, the positioning sleeve 14 can ensure the movement trajectory of the adsorption block 7 and reduce the problem of the adsorption block 7 shifting to other directions under the drive of the separation fan blade 3, which would cause the short rod 13 to bend.

[0039] Example 2

[0040] like Figure 5 As shown in the first embodiment, another embodiment of the present invention is as follows: an isolation pad 15 is fixedly installed in the middle of the through hole 4. The isolation pad 15 is made of elastic material. When working, the isolation pad 15 can not only reduce the problem of quartz sand entering the interlayer, but also act as a buffer to reduce the rigid collision between the separation fan blade 3 and the impact ball 9, so that the equipment can run for a long time.

[0041] During operation, quartz sand is taken from the natural environment and often contains iron filings. To ensure the quality of quartz sand products, iron impurities need to be removed, and qualified quartz sand is screened out. By setting up a separating fan blade 3 and a controllable electromagnet 22, quartz sand is simply put into the impurity removal box 1 through the input pipe 2, allowing the quartz sand to contact the top surface of the separating fan blade 3 below the input pipe 2. At this time, the electromagnet 22 is energized and magnetic, which can effectively adsorb the iron impurities in the quartz sand. The separating fan blade 3 will rotate under the impact of the quartz sand. As the separating fan blade 3 tilts, the unadsorbed quartz sand will fall to one side of the baffle 8. Under the action of inertia, the separating fan blade 3 will continue to rotate. When it rotates to the other side of the baffle 8, the switch is used. The component de-energizes electromagnet 22, causing it to lose its magnetism. This allows the adsorbed iron impurities to be drawn to the other side of baffle 8 under gravity. The repeated rotation of the three separating fan blades 3 achieves rapid and effective removal of iron impurities from the quartz sand, with a smooth and uninterrupted process, significantly improving removal efficiency. During operation, in conjunction with the baffle 8, the magnetism of electromagnet 22 is eliminated when the separating fan blades 3 rotate to their highest point. This design allows sufficient space for the filtered quartz sand to fall onto one side of baffle 8, while the filtered iron impurities fall to the top surface of adjacent separating fan blades 3, which are tilted at this point, ensuring the iron impurities fall smoothly to the other side of baffle 8. During operation, in conjunction with the contact block... The design of block 6 not only increases the contact area between the quartz sand and the separating fan blade 3, but also, during the tilting process of the separating fan blade 3, the upper layer of quartz sand flows through the gaps in the contact block 6, allowing it to further adsorb iron impurities on the inner side, thus improving the iron impurity removal effect. During operation, the concave arc design on both sides of the separating fan blade 3 increases the volume of quartz sand it can hold, while reducing the problem of quartz sand splashing everywhere when falling in. The concave design at the bottom allows iron impurities to flow more smoothly downwards on the arc surface, reducing the problem of iron impurity residue. The ratchet 17 and pawl 24 design ensure that the central disc 16 can only rotate clockwise, reducing the amount of iron impurities falling into the quartz sand in the final stage. The finished product is equipped with a button 20, which is used to control the energization state of the electromagnet 22 and the power supply. During operation, as the separating fan blade 3 moves, when the separating fan blade 3 is located below the input tube 2 and in a horizontal state, the slide 18 is in an inclined state. At this time, the squeezing ball 19 slides down under the action of gravity and squeezes the button 20, energizing the electromagnet 22 and allowing the adsorption of iron impurities to proceed normally. When the separating fan blade 3 is about to reach the top, the squeezing ball 19 will detach from the button 20 under the action of gravity, disconnecting the circuit and eliminating the adsorption effect. Through this setting, the mechanical triggering and disconnection effect is achieved without setting up a complex program control, which greatly reduces the problem of program failure causing the equipment to malfunction.During operation, the slot and slider 23 allow the separating blade 3 to slide horizontally on the central disk 16. Simultaneously, the protrusion 5 and spring 21 ensure that the separating blade 3 continuously contacts the protrusion 5 during movement, causing it to oscillate horizontally. This facilitates the fall of filtered quartz sand and iron impurities, reducing residue on the outer side of the separating blade 3. It also makes the compression ball 19 more sensitive to changes in gravity, preventing it from failing to move accurately. Furthermore, it ensures even oscillation of the quartz sand as it falls into the separating blade 3, reducing central accumulation and ensuring comprehensive contact. During operation, the rotating shaft 12, long rod 10, and short rod 13 form a lever structure. When the magnetic separating blade 3 passes the adsorption block 7 at one end of the short rod 13, it pulls the short rod 13 to rotate. After rotation and separation, the spring 11 pulls the long rod 10 and the impact ball 9 back, allowing the impact ball 9 to temporarily disengage from the through hole 4 under inertia. This allows it to impact other separating blades 3, effectively amplifying the vibration effect of the separating blades 3 and further improving their ability to expel quartz sand and iron impurities. It also assists in the movement of the compression ball 19. During operation, the placement of the two through holes 4 ensures that the impact ball 9 accurately contacts the side of the separating blade 3, impacting at the location where the separating blade 3 tilts down to discharge quartz sand and at the location where the electromagnet 22 is de-energized. This targeted approach enhances the vibration effect, further improving the expulsion of quartz sand and iron impurities. During operation, the positioning sleeve 14 ensures the movement trajectory of the adsorption block 7, reducing the risk of the adsorption block 7 shifting in other directions under the influence of the separating blades 3, which could cause the short rod 13 to bend.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A quartz sand feeding and screening device, characterized in that: The device includes a cleaning box (1), with an input pipe (2) fixedly installed at the top of the cleaning box (1). A cavity is opened on the inner side of the cleaning box (1). A central disk (16) is rotatably connected to the inner side of the cleaning box (1) near the top. Three equally spaced separating fan blades (3) are arranged on the outer side of the central disk (16). An electromagnet (22) is arranged on the inner side of the separating fan blades (3). A switch assembly is arranged between the electromagnet (22) and the connected power supply. The switch assembly is used to control the on and off of the electromagnet (22). A baffle (8) is fixedly installed at the bottom of the inner side of the cleaning box (1). The baffle (8) is arranged vertically, and the baffle (8) is located on one side of the center of the impurity removal box (1), while the input pipe (2) is located on the other side of the center of the impurity removal box (1). A number of contact blocks (6) are fixedly installed on one side of the separating fan blade (3). When the side with the contact blocks (6) is rotated to the bottom of the input tube (2), it faces upward. The contact blocks (6) are arranged in a conical shape, and the volume of the contact blocks (6) gradually increases from one end near the central disk (16) to the other end. The top and bottom surfaces of the separating fan blades (3) are both concave arc-shaped. A ratchet (17) is fixedly installed on one side of the central disk (16). The ratchet (17) is located in the side wall of the impurity removal box (1) and is rotatably connected to the side wall. A pawl (24) is provided on the outside of the ratchet (17). The pawl (24) is rotatably connected to the impurity removal box (1) and meshes with the ratchet (17). The switch assembly includes a squeeze ball (19), and a slide groove (18) is provided on the inner side of the separating fan blade (3). The squeeze ball (19) is slidably connected to the slide groove (18). A push button (20) is fixedly installed at one end of the slide groove (18) near the electromagnet (22). The push button (20) is used to control the energization state of the electromagnet (22) and the power supply. The separating fan blade (3) is fixedly connected to a slider (23) at one end near the central disk (16). Three sets of T-shaped slots are provided on the outer side of the central disk (16). The slider (23) is T-shaped. The length of the slot is greater than the length of the slider (23). The slider (23) is slidably connected to the central disk (16) through the slot. Two sets of springs (21) are fixedly connected between the slider (23) and the inner wall of the slot. Several protrusions (5) are fixedly installed on the inner side wall of the impurity removal box (1). The protrusions (5) are movably attached to the outer side of the separating fan blade (3). The interior of the impurity removal box (1) is provided with a sandwich layer. Two sets of rotating shafts (12) are rotatably connected to the inner side of the sandwich layer. A short rod (13) and a long rod (10) are fixedly installed on the outer side of the rotating shaft (12). The long rod (10) and the short rod (13) are arranged symmetrically. An adsorption block (7) is fixedly installed at one end of the short rod (13), and an impact ball (9) is fixedly installed at one end of the long rod (10). Two through holes (4) are opened between the sandwich layer and the internal cavity of the impurity removal box (1). A spring (11) is fixedly connected between the long rod (10) and the impurity removal box (1).

2. The quartz sand feeding and screening equipment according to claim 1, characterized in that: One of the through holes (4) is located directly below the center disk (16) and slightly to one side, while the other through hole (4) is located on the same horizontal position as the center disk (16) and slightly above it.

3. The quartz sand feeding and screening equipment according to claim 2, characterized in that: A positioning sleeve (14) is fixedly installed on the inner wall between the interlayer and the cavity of the impurity removal box (1). The positioning sleeve (14) is cylindrical. The adsorption block (7) is slidably connected to the positioning sleeve (14), and there is a gap between the adsorption block (7) and the positioning sleeve (14).

4. The quartz sand feeding and screening equipment according to claim 3, characterized in that: An isolation pad (15) is fixedly installed in the middle of the through hole (4), and the isolation pad (15) is made of elastic material.

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