Quartz sand magnetic separation and screening combination device based on hierarchical structure

Abstract

The invention relates to the technical field of quartz material screening, in particular to a quartz sand magnetic separation and screening combination device based on a hierarchical structure, which comprises a main body, a screening cavity is arranged in the main body, a screening mechanism is rotatably connected in the screening cavity, and the screening mechanism comprises a sleeve rotatably connected with the inner wall of the screening cavity; a first screen is arranged on the circumferential inner wall of the sleeve, a second screen is arranged at the bottom of the inner side of the sleeve, a pressing strip is arranged at the position, located above the second screen, in the sleeve, a fixing shaft is arranged in the center of the interior of the sleeve, a material turning plate is arranged on the outer wall of the lower section of the fixing shaft, and a first gear ring is fixedly connected to the position, close to the bottom, of the outer wall of the sleeve. A first mounting table is arranged at the position, close to the first gear ring, of the outer wall of the body. The screening dynamics and comprehensiveness are greatly enhanced through rotation of the sleeve, the material turning plate is raised and conveyed to the first screen to be filtered, a multi-path screening process is formed, and the problem that the screening pressure of a single screen is too large is solved.

Description

Technical Field

[0001] The invention relates to the technical field of quartz material screening, in particular to a quartz sand magnetic separation and screening combined device based on a hierarchical structure. Background Art

[0002] In the processing of quartz sand, the screening process is crucial and faces many challenges. Traditional quartz sand screening operations often suffer from uneven feeding, which seriously restricts the overall efficiency of the screening. Due to uneven feeding, a large amount of quartz sand may instantly rush into the screening device, exceeding its normal processing capacity, greatly reducing the screening speed and screening efficiency. At the same time, uneven feeding causes the quartz sand to be unevenly distributed on the screen surface, and local areas are too thick to accumulate. As a result, smaller particles of quartz sand cannot fully contact the screen surface and have difficulty passing through the screen holes accurately, which in turn affects the screening accuracy and makes the particle size of the final screened quartz sand product uneven.

[0003] In addition, many existing screening devices have structural design defects. For example, the vibration mode of the screen is relatively simple, with fixed amplitude and frequency, and cannot be flexibly adjusted according to the unique characteristics of quartz sand and the actual feeding situation. This lack of flexibility in the design results in the quartz sand moving on the screen surface not being active and sufficient enough, making efficient screening impossible. Furthermore, quartz sand itself has a certain viscosity and humidity, and is prone to agglomeration and caking under certain conditions, especially humid environments. The agglomerated quartz sand particles increase in size and are difficult to pass through the sieve holes smoothly. Even after multiple screenings, some quartz sand that does not meet the particle size requirements will remain in the sieve, resulting in incomplete screening, which seriously affects the quality and production efficiency of the quartz sand products. Summary of the Invention

[0004] The present invention provides a quartz sand magnetic separation and screening combined device based on a hierarchical structure to solve the problems proposed in the above background technology that the existing screening mechanism has a single screening method, and too much one-time feeding will slow down the screening speed, and at the same time will cause excessive accumulation in some areas, making it difficult for small particles of quartz sand to fully contact the screen surface, resulting in low screening efficiency.

[0005] In order to solve the above technical problems, the present invention adopts a technical solution: to provide a quartz sand magnetic separation and screening combined device based on a hierarchical structure, including a main body, a screening chamber is provided inside the main body, a screening mechanism is rotatably connected inside the screening chamber, the screening mechanism includes a sleeve rotatably connected to the inner wall of the screening chamber, a screen 1 is provided on the circumferential inner wall of the sleeve, a screen 2 is provided on the inner bottom of the sleeve, a pressure strip is provided above the screen 2 inside the sleeve, a fixed shaft is provided at the center position inside the sleeve, a flipping plate is provided on the outer wall of the lower section of the fixed shaft, a gear ring 1 is fixedly connected to the outer wall of the sleeve near the bottom, a mounting platform 1 is provided on the outer wall of the main body near the gear ring 1, a gear 1 is rotatably connected inside the mounting platform 1, the gear 1 is meshed with the gear ring 1, and a driving component 1 connected to the output end of the gear 1 is provided on the top of the mounting platform 1.

[0006] The present invention is further configured such that the bottom of the flipping plate is slidably connected to the top of the pressure strip, and the outer wall of the flipping plate is close to the screen.

[0007] The present invention is further configured such that the screening mechanism further includes a receiving hopper connected to the interior of the screening chamber, wherein the bottom end of the receiving hopper extends to the interior of the sleeve for receiving the quartz sand after magnetic separation.

[0008] The present invention is further configured such that a magnetic separation mechanism is provided on the top of the main body, and the magnetic separation mechanism includes a shell fixedly connected to the main body, a turntable is rotatably connected inside the shell, the upper section of the turntable is located inside the shell and is conical in design, the lower section of the turntable is cylindrical and extends to the inside of the main body, a number of clappers are evenly distributed on the top of the turntable, and the clappers are inclined in design, a limit frame is provided on the outside of the shell, a fixed shell is rotatably connected between the shell and the limit frame, and the inner wall of the fixed shell is provided with a magnetic part rotatably connected to the shell.

[0009] The present invention is further configured as follows: the turntable is located below the clapper and has a plurality of lifting plates evenly arranged on its outer wall; one side of the lifting plate adopts a section design; the inner wall of the shell is spirally provided with a guide strip corresponding to the position of the magnetic part; the guide strip is consistent with the spiral direction of the magnetic part; the outer wall of the fixed shell is provided with a second gear ring; the outer wall of the limit frame is provided with a second mounting platform corresponding to the position of the second gear ring; the internal rotation of the second mounting platform is connected to a second gear; the second gear is meshed with the second gear ring; the top of the second mounting platform is provided with a second drive component whose output end is connected to the second gear.

[0010] The present invention is further configured such that a feed port is provided at the top of the shell, the bottom of the feed port extends into the interior of the shell and is provided with a partition plate, the partition plate is provided with a receiving port near the top of the guide bar, one side of the receiving port is fixedly connected to the inner wall of the shell, and a material extraction component is provided inside the receiving port for sucking away the magnetic material entering therein.

[0011] The present invention is further configured such that a guide channel is formed between the guide bars, the guide bars are consistent with the spiral direction of the magnetic piece, and the bottom opening diameter of the partition plate is smaller than the circumferential diameter formed by the clapper board.

[0012] The present invention is further configured such that a slot is provided at the bottom of the turntable, a support platform is provided inside the slot, the lower section of the support platform is fixedly connected to the main body, and a drive component three having an output end connected to the turntable is provided inside the top of the support platform.

[0013] The beneficial effects of the quartz sand magnetic separation and screening combined device based on the hierarchical structure of the present invention are as follows: 1. The sleeve in the screening mechanism is conical in design, with screen 1 and screen 2 arranged inside, and a fixed shaft inside the sleeve and a gear ring 1 on the outer wall. The driving assembly 1 on the mounting platform 1 drives the gear 1 to rotate, and then the sleeve and its internal components rotate clockwise, so that the quartz sand is screened during the rotation process, which increases the dynamics and comprehensiveness of the screening. The bottom of the flipping plate is slidably connected to the top of the pressure bar and the outer wall is close to the screen 1. When the quartz sand falls in, part of the quartz sand falls directly to the bottom and is filtered by the screen 2, and part of it is lifted by the flipping plate during the falling process and sent to the screen 1 for filtration. When too much sand accumulates on the surface of the screen 2, the flipping plate can lift up the excess quartz sand to avoid damaging the screen 2. Through the synergistic effect of the two filters, the filtering effect and efficiency are greatly improved, and the problems of local excessive accumulation and small particles of quartz sand being difficult to fully contact the screen surface caused by uneven feeding in traditional screening devices are effectively solved, thereby improving the screening accuracy and overall efficiency.

[0014] 2. The clappers at the top of the turntable in the magnetic separation mechanism slap the incoming quartz sand, breaking up any clumps and allowing it to enter the magnetic separation process in a loose state. This effectively prevents clumped sand from shielding internal magnetic impurities and improves magnetic separation uniformity. The lifters on the turntable fling the sand toward the inner wall of the shell through the cut surface, causing the sand to form a complex motion trajectory within the shell, increasing its chances of being attracted by the magnetic elements. At the same time, the mutual collisions between the sand particles reduce the likelihood of small magnetic impurities being entrained by larger particles, thereby improving the magnetic separation efficiency. The spiral magnetic elements generate a rotating magnetic field, forming a continuous, dynamic adsorption zone within the shell. Compared to traditional magnetic field structures, they can more comprehensively capture magnetic impurities in various positions and motions. The rotation speed can be adjusted based on factors such as the sand feed rate and the magnetic impurity content. For example, when the feed rate is fast or there are a lot of magnetic impurities, the rotation speed can be increased to enhance adsorption capacity, further improving the magnetic separation effect and adaptability. The guide strips in the shell are consistent with the spiral direction of the magnetic piece and form a guide channel, which makes it easy for the magnetic impurities adsorbed on the magnetic piece to move upward along the channel to the receiving port and be extracted by the extraction component. At the same time, the partition plate limits the falling range of the quartz sand and prevents the scattered quartz sand from entering the receiving port, ensuring the efficiency and accuracy of the magnetic separation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, a detailed description is given below with reference to the accompanying drawings.

[0016] It should be noted that, unless otherwise defined, the technical or scientific terms used in the present invention should have the usual meanings understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0017] Figure 1 This is a three-dimensional structural diagram of a quartz sand magnetic separation and screening combined device based on a hierarchical structure of the present invention; Figure 2 This is a bottom view of a combined device for magnetic separation and screening of quartz sand based on a hierarchical structure according to the present invention; Figure 3 This is a diagram showing the internal structure of a combined device for magnetic separation and screening of quartz sand based on a hierarchical structure according to the present invention; Figure 4 This is a separation diagram of a quartz sand magnetic separation and screening combined device based on a hierarchical structure of the present invention; Figure 5 This is a cross-sectional view of a screening mechanism of a combined quartz sand magnetic separation and screening device based on a hierarchical structure according to the present invention; Figure 6 This is a diagram showing the internal structure of a magnetic separation mechanism of a combined quartz sand magnetic separation and screening device based on a hierarchical structure according to the present invention; Figure 7 This is a separation diagram of the magnetic separation mechanism of a quartz sand magnetic separation and screening combined device based on a hierarchical structure of the present invention; Figure 8 This is an exploded view of the magnetic separation mechanism of a quartz sand magnetic separation and screening combined device based on a hierarchical structure of the present invention.

[0018] The following are marked in the figure: 1. Main body; 11. Mounting platform 1; 12. Material receiving hopper; 13. Screening chamber; 2. Screening mechanism; 21. Sleeve; 22. Screen 1; 23. Screen 2; 231. Pressing strip; 24. Fixed shaft; 25. Turning plate; 26. Gear ring 1; 27. Gear 1; 28. Drive assembly 1; 3. Magnetic separation mechanism; 31. Shell; 311. Limiting frame; 312. Guide strip; 32. Turntable; 321. Lifting plate; 322. Clapper; 33. Fixed shell; 331. Gear ring 2; 332. Magnetic part; 34. Mounting platform 2; 341. Gear 2; 342. Drive component 2; 35. Feed port; 351. Partition plate; 352. Receiving port; 353. Extraction component; 36. Support platform; 361. Drive component 3. DETAILED DESCRIPTION

[0019] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other; the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left" and "right" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the positions or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limitations of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, unless otherwise expressly specified and limited, the term "connection" should be understood in a broad sense, for example, "connection" can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or a transmission connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two elements or the interaction relationship between two elements.

[0021] See also Figures 1-8 , a quartz sand magnetic separation and screening combined device based on a hierarchical structure, comprising a main body 1, wherein a screening chamber 13 is provided inside the main body 1; A screening mechanism 2 is rotatably connected to the inside of the screening chamber 13. The screening mechanism 2 includes a sleeve 21 rotatably connected to the inner wall of the screening chamber 13. A screen 22 is provided on the circumferential inner wall of the sleeve 21, and a screen 23 is provided on the inner bottom of the sleeve 21. A pressure strip 231 is provided above the screen 23 inside the sleeve 21. A fixed shaft 24 is provided at the center position inside the sleeve 21, and a flipping plate 25 is provided on the outer wall of the lower section of the fixed shaft 24. A gear ring 26 is fixedly connected to the outer wall of the sleeve 21 near the bottom, and a mounting platform 11 is provided on the outer wall of the main body 1 near the gear ring 26. A gear 27 is rotatably connected to the inside of the mounting platform 11, and the gear 27 is meshed with the gear ring 26. A driving component 28 with an output end connected to the gear 27 is provided on the top of the mounting platform 11.

[0022] By adopting the above technical solution, the driving component 28 will drive the gear ring 26 to rotate through the gear 27, thereby driving the sleeve 21 and its internal components to rotate clockwise. When the quartz sand falls in, some quartz sand will fall directly to the bottom, and then will be directly filtered by the screen 23 while rotating. Some will be lifted up by the flipping plate 25 during the falling process and sent to the screen 1 22 for filtration. Since the flipping plate 25 is arranged above the pressure bar 231, when too much quartz sand accumulates on the surface of the screen 23, the flipping plate 25 will lift up the excess quartz sand to avoid damaging the screen 23. The filtration of the two filters can greatly improve the filtration effect and efficiency.

[0023] The bottom of the flipping plate 25 is slidably connected to the top of the pressure strip 231, and the outer wall of the flipping plate 25 is close to the screen 22. The screening mechanism 2 also includes a receiving hopper 12 connected to the inside of the screening chamber 13. The bottom end of the receiving hopper 12 extends to the inside of the sleeve 21 for receiving quartz sand after magnetic separation.

[0024] By adopting the above technical solution, the bottom end of the receiving hopper 12 extends to the inside of the sleeve 21, and its function is to receive the quartz sand after magnetic separation, so that the magnetic separation process and the screening process can be effectively connected. After the quartz sand enters the screening mechanism 2, due to the special positional relationship between the flipping plate 25, the pressure strip 231 and the screen 1 22, during the falling process of the quartz sand, some quartz sand will fall directly to the bottom and be directly filtered by the screen 2 23 when the sleeve 21 rotates, while others will be lifted by the flipping plate 25 and sent to the screen 1 22 for filtration. When too much quartz sand accumulates on the surface of the screen 2 23, the flipping plate 25 can lift the excess quartz sand to avoid crushing the screen 2 23. Through the collaborative filtering effect of the two filter screens, the filtering effect and efficiency are greatly improved, and the quality and output of the quartz sand screening are guaranteed.

[0025] A magnetic separation mechanism 3 is provided on the top of the main body 1, and the magnetic separation mechanism 3 includes a shell 31 fixedly connected to the main body 1, and a turntable 32 is rotatably connected inside the shell 31. The upper section of the turntable 32 is located inside the shell 31 and is conical in design. The lower section of the turntable 32 is cylindrical and extends to the inside of the main body 1. A number of clappers 322 are evenly distributed on the top of the turntable 32, and the clappers 322 are inclined in design. A limit frame 311 is provided on the outside of the shell 31, and a fixed shell 33 is rotatably connected between the shell 31 and the limit frame 311. The inner wall of the fixed shell 33 is provided with a magnetic part 332 rotatably connected to the shell 31.

[0026] By adopting the above technical solution, when quartz sand enters the shell 31 through the feed port 35, it will directly fall on the top of the turntable 32 due to the restriction of the partition plate 351. The clapper 322 at the top of the turntable 32 slaps the incoming quartz sand while rotating to break up any lumps, ensuring that the quartz sand enters the subsequent magnetic separation link in a loose state. The broken quartz sand will fall along the inclined surface of the upper section of the turntable 32 due to gravity and be attracted by the magnetic part 332. However, smaller magnetic impurities may be blocked by large particles and difficult to be adsorbed. During the falling process, the quartz sand will be continuously thrown toward the inner wall of the shell 31 through the cross section by the lifting plate 321, causing the quartz sand to form a complex motion trajectory in the shell 31, increasing the chance of being attracted by the magnetic part 332 and reducing the possibility of tiny magnetic impurities being entrained by large particles. The magnetic part 332 will adsorb the magnetic impurities and make them stick to the inner wall of the shell 31, and move upward along the guide channel formed by the guide strips 312. When the lifting plate 321 throws the quartz sand toward the inner wall of the shell 31 and hits the clapper 322, the impurities will be collided and separated from the mixed quartz sand. When the magnetic impurities move to the top along the guide channel, they will enter the receiving port 352 and then be extracted by the extraction component 353.

[0027] The turntable 32 is located below the clapper 322 and is evenly provided with a number of lifting plates 321 on the outer wall. One side of the lifting plate 321 adopts a cross-section design. The inner wall of the shell 31 is spirally provided with a guide strip 312 at the position of the magnetic piece 332. The guide strip 312 is consistent with the spiral direction of the magnetic piece 332. The outer wall of the fixed shell 33 is provided with a gear ring 2 331. The outer wall of the limiting frame 311 is provided with a mounting platform 2 34 at the position of the gear ring 2 331. The mounting platform 2 34 is rotatably connected with a gear 2 341. The gear 2 341 is meshed with the gear ring 2 331. The top of the mounting platform 2 34 is provided with a driving component 2 342 whose output end is connected to the gear 2 341. A slot is provided at the bottom of the turntable 32, and a support platform 36 is provided inside the slot. The lower section of the support platform 36 is fixedly connected to the main body 1, and the top of the support platform 36 is provided with a driving component 3 361 whose output end is connected to the turntable 32.

[0028] By adopting the above technical solution, a slot is opened at the bottom of the turntable 32, and a support platform 36 is arranged inside the slot. The lower section of the support platform 36 is fixedly connected to the main body 1 to provide stable support for the turntable 32. A drive component three 361 with an output end connected to the turntable 32 is arranged inside the top of the support platform 36. The drive component three 361 can drive the turntable 32 to rotate clockwise, so that the quartz sand entering the shell 31 is first beaten and agglomerated by the clapper 322 under the rotation of the turntable 32, and then thrown to the inner wall of the shell 31 due to the action of the lifting plate 321 during the falling process, so as to realize a complex motion trajectory and improve the magnetic separation effect. In the whole process, the various components cooperate closely to ensure the efficient and orderly operation of the magnetic separation link.

[0029] A feed port 35 is provided at the top of the shell 31, and the bottom of the feed port 35 extends to the interior of the shell 31 and is provided with a partition plate 351. A receiving port 352 is provided at a position of the partition plate 351 near the top of the guide bar 312. One side of the receiving port 352 is fixedly connected to the inner wall of the shell 31. A suction component 353 is provided inside the receiving port 352 for sucking away the magnetic material entering therein. A guide channel is formed between the guide bars 312, and the spiral direction of the guide bars 312 is consistent with that of the magnetic piece 332. The diameter of the opening at the bottom of the partition plate 351 is smaller than the circumferential diameter of the circle formed by the clapper 322.

[0030] By adopting the above technical solution, the guide bars 312 form a guide channel, and the guide bars 312 and the magnetic member 332 have the same spiral direction and rotate in opposite directions. This design allows magnetic impurities adsorbed on the magnetic member 332 to move upward along the guide channel to the receiving port 352. The diameter of the bottom opening of the partition plate 351 is smaller than the circumference of the circle formed by the clapper plate 322. This effectively limits the falling range of the quartz sand, preventing the quartz sand from scattering near the receiving port 352 and interfering with the collection of magnetic impurities. At the same time, it ensures that the quartz sand can accurately land on the top of the turntable 32 for subsequent magnetic separation operations. The coordinated action of these components ensures the accuracy and efficiency of the magnetic separation process.

[0031] The working principle and usage process of the embodiment of the present invention are as follows: A guiding channel is formed between the guiding strips 312 , and the spiral directions of the guiding strips 312 and the magnetic member 332 are both counter-rotating. The diameter of the bottom opening of the partition plate 351 is smaller than the diameter of the circumference formed by the clapper plate 322 .

[0032] During use, drive assembly three 361 drives turntable 32 to rotate clockwise, drive assembly two 342 drives gear ring two 331 to rotate via gear two 341, and gear ring two 331 drives magnetic element 332 to rotate counterclockwise via fixed shell 33. Quartz sand enters shell 31 through feed port 35 and falls directly on top of turntable 32 due to the restriction of partition plate 351. Multiple inclined clappers 322 at the upper end of turntable 32 clapper the incoming quartz sand during rotation, breaking up any lumps and ensuring that the quartz sand enters the subsequent magnetic separation process in a loose state. This helps to improve the uniformity of magnetic separation, because agglomerated quartz sand may shield internal magnetic impurities, making it difficult for them to be attracted by the magnetic field. The broken-up quartz sand will fall along the inclined surface of the upper section of turntable 32 due to gravity, and thus be attracted by magnetic element 332.

[0033] However, smaller magnetic impurities may be blocked by larger quartz sand particles in the quartz sand, making it difficult for them to be effectively adsorbed by the magnetic field. For example, when the magnetic impurity particles are smaller than 0.1 mm, they may be adsorbed on the surface of larger quartz sand particles and leave the magnetic separation area along with the quartz sand, thereby reducing the removal rate of magnetic separation. Therefore, during the falling process, the quartz sand will be continuously thrown toward the inner wall of the shell 31 by the lifting plate 321 through the cut surface, causing the quartz sand to form a complex motion trajectory in the shell 31, which not only increases the chance of the quartz sand being attracted by the magnetic member 332, but also further reduces the possibility of tiny magnetic impurities being entrained by large particles through the mutual collision between the quartz sand. This helps in screening the magnetic piece 332. The magnetic piece 332 will continuously attract the magnetic impurities in the quartz sand through magnetic force, so that it sticks to the inner wall of the shell 31. As the magnetic piece 332 rotates, it will carry these impurities upward along the guide channel formed by the guide bars 312. Because the magnetic impurities will carry some quartz sand when they are adsorbed, when the lifting plate 321 throws the quartz sand to the inner wall of the shell 31, the impurities will be hit by the slapping plate 322 while being slapped, thereby separating the quartz sand mixed in it to improve the separation efficiency.

[0034] The spirally arranged magnetic element 332 is the core part of the magnetic separation. Its rotation generates a rotating magnetic field. When the quartz sand is swept toward the inner wall of the shell 31 and slides down the inner wall, the magnetic impurities such as metal debris in it will be adsorbed by the magnetic field force of the magnetic component. This spiral design allows the magnetic field to form a continuous, dynamic adsorption area within the shell 31. Compared with the traditional fixed magnetic field or simple linear magnetic field structure, it can more comprehensively capture magnetic impurities in different positions and motion states. The rotation of the magnetic element 332 can be driven by a motor, and its speed can be adjusted according to factors such as the feed rate of the quartz sand and the content of magnetic impurities. For example, when the feed rate is fast or there are more magnetic impurities, the speed of the magnetic component can be appropriately increased to enhance the magnetic field's ability to adsorb magnetic impurities.

[0035] When the magnetic impurities move to the top along the guide channel formed by the guide strip 312, they will enter the inside of the receiving port 352 and then be sucked away by the extraction component 353. The partition plate 351 is not only used to limit the falling range of the quartz sand, but also to prevent the scattered quartz sand from entering the inside of the receiving port 352.

[0036] After magnetic separation, the quartz sand will continue to fall along the turntable 32 and finally fall into the receiving hopper 12, and then fall into the sleeve 21 of the screening mechanism 2. The driving component 28 will drive the gear ring 26 to rotate through the gear 27, and the gear ring 26 will drive the sleeve 21 and its internal components to rotate clockwise. After the quartz sand falls in, some of the quartz sand will fall directly to the bottom, and then will be directly filtered by the screen 23 while rotating. Some will be lifted up by the flipping plate 25 during the falling process and sent to the screen 22 for filtration. Because the flipping plate 25 is set above the pressure bar 231, when too much quartz sand is accumulated on the surface of the screen 23, the flipping plate 25 will lift up the excess quartz sand to avoid crushing the screen 23. The filtration of the two filters can greatly improve the filtration effect and efficiency.

[0037] In summary, compared with the prior art, the embodiments of the present invention have the following advantages: Advantage 1: The top of the housing 31 of the magnetic separation mechanism 3 is equipped with a feed port 35 and a partition plate 351. The partition plate 351 effectively limits the falling range of the quartz sand, ensuring that the quartz sand lands accurately on the top of the turntable 32, preventing feed dispersion from affecting the magnetic separation effect. The clapper 322 at the top of the turntable 32 cooperates with the feed port 35 and the partition plate 351 to promptly clam up the quartz sand as it enters the magnetic separation process, ensuring that the quartz sand is in a loose state. This facilitates the adsorption of magnetic impurities by the magnetic element 332, thereby improving the uniformity and accuracy of the magnetic separation.

[0038] Advantage 2: The lifter 321 on the turntable 32 works in synergy with the guide bar 312 and spiral magnetic element 332 on the inner wall of the housing 31. The lifter 321 flings the quartz sand toward the inner wall, creating a complex trajectory within the housing 31. This increases the chance of contact with the magnetic element 332 and reduces the chance of small magnetic impurities being entrained by larger particles. The guide bar 312 and magnetic element 332 rotate in the same spiral direction and in opposite directions, forming a stable guide channel that facilitates the upward movement of magnetic impurities to the receiving port 352 for removal by the extraction assembly 353. This improves the efficiency and accuracy of magnetic separation and overcomes the incompleteness of magnetic separation in existing technologies.

[0039] Advantage 3: Sleeve 21 of screening mechanism 2 adopts a conical design, with screen 1 22 and screen 2 23 inside. This unique structure optimizes the screening path and time of quartz sand within sleeve 21. A flip plate 25 on fixed shaft 24 cooperates with pressure strip 231. When excessive quartz sand accumulates on the surface of screen 2 23, flip plate 25 lifts the excess sand and sends it to screen 1 22 for filtration, preventing damage to screen 2 23 and ensuring a stable and continuous screening process.

[0040] Advantage 4: Gear ring 26 on the outer wall of sleeve 21 is connected to gear 27 and drive assembly 28 on mounting platform 11, enabling clockwise rotational screening of sleeve 21 and its internal components. Compared to traditional fixed-screen vibratory screening, this rotary screening method allows for more dynamic and full movement of quartz sand on the screen, effectively resolving the low screening efficiency problem caused by the single screen vibration mode in existing technologies. By utilizing the collaborative filtering of the two screens, screening effectiveness and efficiency are greatly improved.

[0041] Advantage 5: The magnetic separation mechanism 3 and screening mechanism 2 within the main body 1 are tightly connected via the receiving hopper 12, forming a continuous process flow. The magnetically separated quartz sand can be continuously fed into the screening mechanism 2 for further processing, reducing losses and time wasted in the material transfer process and improving the overall efficiency of the quartz sand processing.

[0042] Advantage 6. The reasonable design and coordinated operation of the various components in the magnetic separation mechanism 3 and the screening mechanism 2 effectively improve the product quality problems caused by uneven feeding and screen structure defects in the existing technology, such as uneven particle size and incomplete removal of magnetic impurities, thereby improving the quality of quartz sand products, enhancing the competitiveness of products in the market, and improving the economic and production benefits of quartz sand processing as a whole.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A quartz sand magnetic separation and screening combined device based on a hierarchical structure, characterized in that: include: A main body (1), wherein a screening chamber (13) is provided inside the main body (1); The screening chamber (13) is rotatably connected to a screening mechanism (2), the screening mechanism (2) comprising a sleeve (21) rotatably connected to the inner wall of the screening chamber (13), a screen mesh 1 (22) being provided on the circumferential inner wall of the sleeve (21), a screen mesh 2 (23) being provided on the inner bottom of the sleeve (21), a pressure strip (231) being provided above the screen mesh 2 (23) in the sleeve (21), a fixed shaft (24) being provided at the center of the sleeve (21), the fixed shaft ( 24) The outer wall of the lower section is provided with a turning plate (25), the outer wall of the sleeve (21) is fixedly connected to a gear ring (26) near the bottom position, the outer wall of the main body (1) is provided with a mounting platform (11) near the gear ring (26), the mounting platform (11) is internally rotatably connected to a gear (27), the gear (27) is meshed with the gear ring (26), and the top of the mounting platform (11) is provided with a drive component (28) whose output end is connected to the gear (27).

2. The quartz sand magnetic separation and screening combined device based on a hierarchical structure according to claim 1 is characterized in that: The bottom of the flipping plate (25) is slidably connected to the top of the pressure strip (231), and the outer wall of the flipping plate (25) is close to the screen (22).

3. The quartz sand magnetic separation and screening combined device based on a hierarchical structure according to claim 1 is characterized in that: The screening mechanism (2) further comprises a receiving hopper (12) connected to the interior of the screening chamber (13), wherein the bottom end of the receiving hopper (12) extends into the interior of the sleeve (21) and is used to receive the quartz sand after magnetic separation.

4. The quartz sand magnetic separation and screening combined device based on a hierarchical structure according to claim 1 is characterized in that: A magnetic separation mechanism (3) is provided on the top of the main body (1), and the magnetic separation mechanism (3) includes a shell (31) fixedly connected to the main body (1), a turntable (32) is rotatably connected inside the shell (31), an upper section of the turntable (32) is located inside the shell (31) and has a conical design, and a lower section of the turntable (32) is cylindrical and extends into the interior of the main body (1), a plurality of clappers (322) are evenly distributed on the top of the turntable (32), and the clappers (322) are of an inclined design, a limiting frame (311) is provided outside the shell (31), a fixed shell (33) is rotatably connected between the shell (31) and the limiting frame (311), and a magnetic member (332) rotatably connected to the shell (31) is provided on the inner wall of the fixed shell (33).

5. The quartz sand magnetic separation and screening combined device based on a hierarchical structure according to claim 4 is characterized in that: The turntable (32) is located below the clapper (322) and has a plurality of lifting plates (321) uniformly arranged on its outer wall. One side of the lifting plate (321) adopts a section design. The inner wall of the shell (31) is spirally provided with a guide bar (312) corresponding to the position of the magnetic member (332). The guide bar (312) and the magnetic member (332) have the same spiral direction. The outer wall of the fixed shell (33) is provided with a second gear ring (331). The outer wall of the limiting frame (311) is provided with a second mounting platform (34) corresponding to the position of the second gear ring (331). The second mounting platform (34) is rotatably connected to the inside of the second gear ring (341). The second gear (341) is meshed with the second gear ring (331). The top of the second mounting platform (34) is provided with a driving component (342) whose output end is connected to the second gear (341).

6. The quartz sand magnetic separation and screening combined device based on a hierarchical structure according to claim 4 is characterized in that: The shell (31) is provided with a feed port (35) at the top, the feed port (35) extends to the inside of the shell (31) at its bottom and is provided with a partition plate (351), the partition plate (351) is provided with a receiving port (352) near the top of the guide bar (312), one side of the receiving port (352) is fixedly connected to the inner wall of the shell (31), and a material extraction component (353) is provided inside the receiving port (352) for sucking away the magnetic material entering therein.

7. The combined device for magnetic separation and screening of quartz sand based on a hierarchical structure according to claim 6, characterized in that: The guide bars (312) form a guide channel, the guide bars (312) and the magnetic member (332) have the same spiral direction, and the bottom opening diameter of the partition plate (351) is smaller than the circumference diameter formed by the clapper plate (322).

8. The quartz sand magnetic separation and screening combined device based on a hierarchical structure according to claim 4 is characterized in that: A notch is provided at the bottom of the turntable (32), a support platform (36) is provided inside the notch, a lower section of the support platform (36) is fixedly connected to the main body (1), and a drive component 3 (361) whose output end is connected to the turntable (32) is provided inside the top of the support platform (36).

Images