Quartz sand screening device

Abstract

The invention discloses a quartz sand screening device which comprises a screening mechanism, and a material receiving mechanism is installed on the screening mechanism. And the screening mechanism comprises a cover body, the bottom of the cover body is fixedly connected with a spraying dust falling ring, the bottom of the spraying dust falling ring is fixedly connected with a screening container, and the top of the cover body is fixedly connected with a feeding assembly. The quartz sand screening device has the beneficial effect of being environmentally friendly, and the problems that in the using process of an existing quartz sand screening device, raised dust generated in the sand screening process is not convenient to reduce, air in the processing environment is likely to be polluted, the body health of workers is harmed, large quartz sand particles are not convenient to automatically discharge, and the sand screening efficiency is reduced are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of quartz sand screening, and specifically relates to a quartz sand screening device. Background Art

[0002] A quartz sand screening device is a mechanical device specifically used to separate quartz sand according to different particle sizes. Through the physical screening principle, the quartz sand with different particle sizes is separated into finished products of different specifications to meet specific industrial needs. It is mainly used in the fields of glass manufacturing, ceramic production, foundry, water treatment, and photovoltaic materials.

[0003] A quartz sand screening device with a Chinese patent application number of 201920927604.9 includes a device base. Both left and right ends of the outer wall of the top of the device base are fixedly installed with support rods, and a placement base is fixedly installed on the outer wall of the top of the device base and between the two support rods. For this quartz sand screening device, by starting the motor, the first screening box and the second screening box can be driven to shake intermittently at a high frequency, thereby screening the quartz sand. Since the diameter of the leakage holes of the first screening net is larger than that of the second screening net, the quartz sand with the largest particle size remains in the first screening box, the quartz sand with the smallest particle size falls into the third screening box, and the quartz sand with a medium particle size falls into the second screening box, so as to screen out the quartz sand according to different particle sizes respectively, which is convenient for subsequent differential use according to different particle sizes of the quartz sand.

[0004] During the use of the existing quartz sand screening device, it is not convenient to reduce the dust generated during the sand screening process, which easily causes air pollution in the processing environment and endangers the health of the staff. Moreover, it is not convenient to automatically discharge larger quartz sand particles, reducing the sand screening efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide a quartz sand screening device, which has the advantage of environmental protection, and solves the problems that during the use of the existing quartz sand screening device, it is not convenient to reduce the dust generated during the sand screening process, which easily causes air pollution in the processing environment and endangers the health of the staff, and it is not convenient to automatically discharge larger quartz sand particles, reducing the sand screening efficiency.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A quartz sand screening device includes a screening mechanism, and a material receiving mechanism is installed on the screening mechanism;

[0007] The screening mechanism includes a cover body, a spray dust reduction ring is fixedly connected to the bottom of the cover body, a screening container is fixedly connected to the bottom of the spray dust reduction ring, and a feeding component is fixedly connected to the top of the cover body.

[0008] Preferably, as a quartz sand screening device of the present invention, a motor is fixedly connected to the center of the top of the cover body, quartz sand height measurement sensors are fixedly installed on both the left and right sides of the bottom of the cover body, and the output shaft of the motor is fixedly connected to a stirring assembly.

[0009] Preferably, as a quartz sand screening device of the present invention, a screening plate is movably connected to the inner cavity of the screening container, screening nets are installed on both the left and right sides inside the screening plate, and the stirring assembly is rotatably connected to the top of the screening plate.

[0010] Preferably, as a quartz sand screening device of the present invention, a vibration motor is fixedly installed at the center of the bottom of the screening plate, first springs are fixedly connected to both the front and rear sides of the bottom of the screening plate, the bottom of the first spring is fixedly connected to a support ring, and the support ring is fixedly installed at the bottom of the inner wall of the screening container.

[0011] Preferably, as a quartz sand screening device of the present invention, a plurality of ultrasonic transducers are installed at the bottom of the screening net, and the plurality of ultrasonic transducers are evenly distributed at the bottom of the screening net.

[0012] Preferably, as a quartz sand screening device of the present invention, microporous nozzles are installed around the surface of the spray dust suppression ring, and the water outlet holes of the microporous nozzles are inclined downward.

[0013] Preferably, as a quartz sand screening device of the present invention, the stirring assembly includes a rotating rod, the rotating rod is installed on the output shaft of the motor, a polygonal sleeve is fixedly connected to the bottom of the rotating rod, a polygonal column is slidably connected to the inner cavity of the polygonal sleeve, a stirring rod is fixedly connected to the bottom of the polygonal column, the bottom of the stirring rod is rotatably connected to the center of the top of the screening plate, and the bottom of the stirring rod is movably connected to the top of the screening net.

[0014] Preferably, as a quartz sand screening device of the present invention, a second spring is fixedly connected to the top of the polygonal column, the top of the second spring is fixedly connected to the top of the inner cavity of the polygonal sleeve, and a spiral blade is fixedly connected to the top of the stirring rod.

[0015] Preferably, as a quartz sand screening device of the present invention, the feeding assembly includes a feeding port, a distributing hopper is communicated with the bottom of the feeding port, a partition member is fixedly connected to the inner cavity of the distributing hopper, the motor is located at the bottom of the partition member, and the left and right sides of the bottom of the distributing hopper are communicated with blanking pipes, and the blanking pipes penetrate through to the bottom of the cover body.

[0016] Preferably, as a quartz sand screening device of the present invention, the diameters of the top of the feeding port and the distributing hopper are smaller than those of the bottom.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. By setting up a screening mechanism, the present invention can screen quartz sand of different particle sizes and reduce the dust generated during the screening process. During the operation of the screening mechanism, the quartz sand enters the distribution hopper through the feed inlet. Inside the distribution hopper, there is an inverted V-shaped partition that evenly diverts the quartz sand to the left and right discharge pipes. The bottom diameter of the distribution hopper is larger than the top to ensure the natural discharge of quartz sand without accumulation. After diversion, the quartz sand enters the left and right regions of the screening container through the discharge pipes, avoiding concentrated accumulation.

[0019] 2. By setting up a material collection mechanism, the present invention can automatically collect quartz sand of different particle sizes, improve the screening efficiency of quartz sand, and reduce the labor intensity of workers. When the material collection mechanism replaces the collection container, the output shaft of the reduction motor drives the drive rod to rotate. The drive rod drives the small transmission wheel to rotate, and the small transmission wheel drives the large transmission wheel and the second mounting rod to rotate through the transmission belt, thereby adjusting the inclination angle of the screening container to make the screening container flip. The angle sensor real-time monitors the rotation angle of the first mounting rod and feeds it back to the control system to ensure the accuracy of the inclination angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the present invention;

[0021] Figure 2 is a schematic structural diagram of the screening mechanism of the present invention;

[0022] Figure 3 is a cross-section of the material collection mechanism of the present invention Figure 1 ;

[0023] Figure 4 is a cross-section of the material collection mechanism of the present invention Figure 2 ;

[0024] Figure 5 is an exploded view of the stirring assembly of the present invention;

[0025] Figure 6 is an exploded view of the feed assembly of the present invention Figure 1 ;

[0026] Figure 7 is an exploded view of the feed assembly of the present invention Figure 2 ;

[0027] Figure 8 is a schematic structural diagram of the material collection assembly of the present invention Figure 1 ;

[0028] Figure 9 is a schematic structural diagram of the material collection assembly of the present invention Figure 2 ;

[0029] Figure 10 is of the present invention Figure 9 an enlarged view of A in.

[0030] In the figure: 100, screening mechanism; 200, material receiving mechanism; 101, cover body; 102, spray dust suppression ring; 103, screening container; 104, feeding assembly; 105, motor; 106, quartz sand height measurement sensor; 107, microporous nozzle; 108, support ring; 109, first spring; 110, screening plate; 111, screening mesh; 112, stirring assembly; 113, ultrasonic transducer; 114, vibration motor; 115, rotating rod; 116, multi-sided sleeve; 117, second spring; 118, multi-sided column; 119, spiral blade; 120, stirring rod; 121, feeding port; 122, material distribution hopper; 123, separator; 124, blanking pipe; 201, base; 202, slide rail; 203, pulley; 204, reduction motor; 205, small driving wheel; 206, mobile vehicle; 207, cylinder; 208, transmission belt; 209, large driving wheel; 210, first mounting rod; 211, support frame; 212, chuck; 213, collection container; 214, limit frame; 215, rack; 216, angle sensor; 217, second mounting rod; 218, connecting frame; 219, gear; 220, driving rod. Specific implementation manner

[0031] Please refer to Figures 1 - 10 , a quartz sand screening device, including a screening mechanism 100, and a material receiving mechanism 200 is installed on the screening mechanism 100.

[0032] Furthermore, the screening mechanism 100 includes a cover body 101, a spray dust suppression ring 102 is fixedly connected to the bottom of the cover body 101, a screening container 103 is fixedly connected to the bottom of the spray dust suppression ring 102, and a feeding assembly 104 is fixedly connected to the top of the cover body 101.

[0033] Furthermore, a motor 105 is fixedly connected to the center of the top of the cover body 101, quartz sand height measurement sensors 106 are fixedly installed on both the left and right sides of the bottom of the cover body 101, and the output shaft of the motor 105 is fixedly connected to a stirring assembly 112.

[0034] Furthermore, the quartz sand height measurement sensor 106 is one of a laser sensor, a radar sensor, and an ultrasonic sensor.

[0035] Further, the ultrasonic transducer 113 is electrically connected to an ultrasonic generator. The ultrasonic generator and the ultrasonic transducer 113 work together to convert electrical energy into mechanical energy, causing the ultrasonic transducer 113 to drive the screening mesh 111 to vibrate. The ultrasonic transducer 113 generates high-frequency sound waves of 20 - 40 kHz, making the quartz sand particles suspended on the sieve surface, reducing friction and promoting the penetration of fine particles through the sieve. Moreover, the ultrasonic transducer 113 can adjust the frequency, adjusting the sound wave frequency according to the particle size of the quartz sand. For example, low frequency is used for coarse particles to enhance fluidity, and high frequency is used for fine particles to improve the suspension effect.

[0036] Further, a screening plate 110 is movably connected to the inner cavity of the screening container 103. Screening meshes 111 are installed on the left and right sides inside the screening plate 110, and the stirring assembly 112 is rotatably connected to the top of the screening plate 110.

[0037] Further, the screening mesh 111 is fan-shaped.

[0038] Further, a vibration motor 114 is fixedly installed at the center of the bottom of the screening plate 110. The front and rear sides of the bottom of the screening plate 110 are fixedly connected to first springs 109, and the bottoms of the first springs 109 are fixedly connected to a support ring 108, and the support ring 108 is fixedly installed at the bottom of the inner wall of the screening container 103.

[0039] Further, a plurality of ultrasonic transducers 113 are installed at the bottom of the screening mesh 111, and the plurality of ultrasonic transducers 113 are evenly distributed at the bottom of the screening mesh 111.

[0040] Further, micro-nozzles 107 are installed around the surface of the spray dust suppression ring 102, and the water outlet holes of the micro-nozzles 107 are inclined downward.

[0041] Further, the water inlet of the micro-nozzle 107 is connected to a water source through a valve, and the sprayed water mist generates a water mist curtain of 10 - 50 μm, and the water mist curtain contacts the quartz sand for dust suppression.

[0042] Further, the stirring assembly 112 includes a rotating rod 115. The rotating rod 115 is installed on the output shaft of the motor 105. A multi-sided sleeve 116 is fixedly connected to the bottom of the rotating rod 115. A multi-sided column 118 is slidably connected to the inner cavity of the multi-sided sleeve 116. A stirring rod 120 is fixedly connected to the bottom of the multi-sided column 118. The bottom of the stirring rod 120 is rotatably connected to the center of the top of the screening plate 110, and the bottom of the stirring rod 120 is movably connected to the top of the screening mesh 111.

[0043] Further, the multi-sided column 118 and the multi-sided sleeve 116 are one of a triangle, a quadrilateral, and a hexagon.

[0044] Further, a second spring 117 is fixedly connected to the top of the multi-sided column 118, the top of the second spring 117 is fixedly connected to the top of the inner cavity of the multi-sided sleeve 116, and a spiral blade 119 is fixedly connected to the top of the stirring rod 120.

[0045] Further, the spiral blade 119 is made of an elastic material, and the elastic material is one of metal, plastic, and rubber.

[0046] Further, the feeding assembly 104 includes a feeding port 121, a material distribution hopper 122 is connected to the bottom of the feeding port 121, a partition member 123 is fixedly connected to the inner cavity of the material distribution hopper 122, the motor 105 is located at the bottom of the partition member 123, and the left and right sides of the bottom of the material distribution hopper 122 are connected to a blanking pipe 124, and the blanking pipe 124 penetrates to the bottom of the cover body 101.

[0047] Further, the diameters of the top of the feeding port 121 and the material distribution hopper 122 are smaller than those of the bottom.

[0048] Further, the partition member 123 divides the inner cavity of the material distribution hopper 122 into two blanking channels, and the blanking channels are connected to the blanking pipes 124.

[0049] Further, the partition member 123 is in an inverted "V" shape.

[0050] Further, the blanking pipe 124 is semi-circular, an arc-shaped groove for accommodating the motor 105 is provided on the opposite side of the two blanking pipes 124, a semi-circular hole matching the blanking pipe 124 is opened at the top of the cover body 101, and the blanking pipe 124 is installed in the semi-circular hole.

[0051] By providing the screening mechanism 100, quartz sand with different particle sizes can be screened, and the dust generated during the screening process can be reduced. During the operation of the screening mechanism 100, the quartz sand enters the material distribution hopper 122 through the feeding port 121. An inverted "V"-shaped partition member 123 is provided inside the material distribution hopper 122 to evenly distribute the quartz sand to the blanking pipes 124 on the left and right sides. The bottom diameter of the material distribution hopper 122 is larger than the top, ensuring that the quartz sand naturally falls and does not accumulate. The divided quartz sand enters the left and right side areas of the screening container 103 through the blanking pipes 124, avoiding concentrated accumulation.

[0052] During the process of the quartz sand descending, the spray dust suppression ring 102 and the micro-nozzle 107 work. The micro-nozzle 107 sprays a water mist curtain with a particle size of 10 - 50 μm, covering the opening area at the top of the screening container 103. The water mist is sprayed obliquely downward, collides with the dust particles and adsorbs and settles, reducing dust dispersion. The water pressure is adjusted by a valve, and the water pressure is 0.1 - 0.3 MPa. The spray amount is dynamically adjusted according to the dust concentration. And because both the material distribution hopper 122 and the feeding port 121 are set with a wider bottom and a narrower top, the dust rising inside the screening container 103 can be reduced.

[0053] Then, the quartz sand is vibrated and screened. After the motor 105 is started, it drives the stirring assembly 112 to work. The rotating rod 115 and the multi-sided sleeve 116 in the stirring assembly 112 rotate synchronously. The multi-sided sleeve 116 drives the multi-sided column 118 to rotate through the polygonal structure, so that the stirring rods 120 and the elastic spiral blades 119 at the bottom rotate and stir the quartz sand accumulated on the screening plate 110, preventing caking and dispersing the sand layer. During the rotation of the multi-sided column 118, it can also slide up and down through the second spring 117 to avoid the stirring rod 120 inhibiting the up and down vibration of the screening plate 110.

[0054] When screening, the ultrasonic transducer 113 at the bottom of the screening mesh 111 is driven by an ultrasonic generator to generate high-frequency vibrations of 20 - 40 kHz. When using low frequency, it enhances the particle fluidity and reduces the friction on the sieve surface. When switching to high frequency, it makes the fine sand in a suspended state and accelerates the passing through the sieve. The screening mesh 111 is designed as a fan shape, which can expand the effective screening area and improve the processing efficiency. At the same time, the vibration motor 114 is installed at the center of the bottom of the screening plate 110 and acts together with the first spring 109 and the support ring 108 to generate vertical vibrations with a vibration frequency of 5 - 15 Hz, further promoting the stratification and passing through the sieve of the quartz sand. During the vibration process, the piston rod of the cylinder 207 drives the chuck 212 to clamp and fix the screening container 103 to prevent the screening container 103 from shaking back and forth, affecting the front and back rotation accuracy of the screening container 103.

[0055] The quartz sand height measurement sensor 106 real-time monitors the accumulated height of the sand layer. When the sand layer height exceeds the set threshold, it reminds the staff to reduce the feeding speed or pause the feeding to prevent overload, and increases the power of the vibration motor 114 or the ultrasonic frequency to accelerate the screening. When the sand layer height is too low, the feeding is resumed to maintain continuous production. The fine-grained quartz sand passing through the sieve falls into the bottom of the screening container 103 through the screening mesh 111 and is discharged through the bottom opening into the receiving mechanism 200.

[0056] And the quartz sand height measurement sensor 106 real-time monitors the falling speed of the sand layer. When the sand layer accumulates too high and the feeding is paused, and the screening mesh 111 cannot screen the quartz sand, resulting in long-term accumulation of quartz sand, the receiving mechanism 200 is controlled by an external controller to replace the collection container 213. During the process of replacing the collection container 213, the screening mechanism 100 flips 180 degrees, and discharges the accumulated large-grained quartz sand through the feeding assembly 104 into the collection container 213 to achieve automatic cleaning. After the cleaning is completed, the staff controls the receiving mechanism 200 and the screening mechanism 100 to reset and continue to screen the quartz sand.

[0057] Further, the material receiving mechanism 200 includes a base 201. On both the left and right sides of the base 201, support frames 211 are fixedly connected. A first mounting rod 210 and a second mounting rod 217 are respectively rotatably connected to the support frames 211. The first mounting rod 210 and the second mounting rod 217 are fixedly connected to the left and right sides of the surface of the screening container 103.

[0058] Further, an air cylinder 207 is fixedly installed on the outer side of the support frame 211. The piston rod of the air cylinder 207 penetrates through the support frame 211 and is equipped with a chuck 212. The chuck 212 is connected to the surface of the screening container 103 to clamp it.

[0059] Further, an angle sensor 216 is provided at one end of the first mounting rod 210. The detection end of the angle sensor 216 is connected to the angle sensor 216. The angle sensor 216 is installed on the support frame 211. A large transmission wheel 209 is fixedly sleeved at one end of the second mounting rod 217. A small transmission wheel 205 is provided at the bottom of the large transmission wheel 209. A transmission belt 208 is in transmission connection on the surfaces of the small transmission wheel 205 and the large transmission wheel 209.

[0060] Further, a drive rod 220 is installed inside the small transmission wheel 205. The drive rod 220 is rotatably connected to the support frame 211. A reduction motor 204 is installed at one end of the drive rod 220. The other end of the drive rod 220 is rotatably connected to a connecting frame 218. The connecting frame 218 is fixedly installed on the support frame 211.

[0061] Further, a slide rail 202 is fixedly connected to the top of the base 201. A pulley 203 is movably connected inside the slide rail 202. The top of the pulley 203 is fixedly connected to a moving vehicle 206. On the front and rear sides of the top of the moving vehicle 206, limit frames 214 are fixedly connected. A detachable collection container 213 is installed inside the limit frames 214. The number of the collection containers 213 is two. The two collection containers 213 are located at the bottom of the screening container 103 to collect quartz sands with different particle sizes.

[0062] Further, a rack 215 is fixedly connected to the bottom of the moving vehicle 206. A gear 219 meshing with the rack 215 is fixedly sleeved on the surface of the drive rod 220 to drive the moving vehicle 206 to move back and forth to replace different collection containers 213.

[0063] By setting up the material receiving mechanism 200, quartz sand with different particle sizes can be automatically collected, improving the screening efficiency of quartz sand and reducing the labor intensity of workers. When replacing the collection container 213 of the material receiving mechanism 200, the output shaft of the reduction motor 204 drives the drive rod 220 to rotate. The drive rod 220 drives the small transmission wheel 205 to rotate. The small transmission wheel 205 drives the large transmission wheel 209 and the second mounting rod 217 to rotate through the transmission belt 208, thereby adjusting the inclination angle of the screening container 103, causing the screening container 103 to flip 180 degrees. The angle sensor 216 monitors the rotation angle of the first mounting rod 210 in real time and feeds it back to the control system to ensure the accuracy of the inclination angle.

[0064] During the flipping process of the screening container 103, the drive rod 220 synchronously drives the gear 219 to rotate. The gear 219 meshes with the rack 215 at the bottom of the mobile vehicle 206 to drive the mobile vehicle 206 to move along the slide rail 202, switching the position of the collection container 213. The slide rail 202 and the pulley 203 ensure the smooth sliding of the mobile vehicle 206 and prevent jamming. The collection container 213 is divided into two compartments for coarse sand and fine sand. Through the position switching of the mobile vehicle 206, during the screening stage, the collection container 213 for collecting fine sand is located directly below the screening container 103 to receive the screened fine sand. During the discharging stage, another screening container 103 is replaced to collect coarse sand. The limit frame 214 is used to fix the collection container 213 to prevent displacement and enable the rapid disassembly of the collection container 213 for easy cleaning.

[0065] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A quartz sand screening device, comprising a screening mechanism (100), characterized in that: The screening mechanism (100) is provided with a material receiving mechanism (200); The screening mechanism (100) comprises a cover body (101), the bottom of the cover body (101) is fixedly connected to a spray dust suppression ring (102), the bottom of the spray dust suppression ring (102) is fixedly connected to a screening container (103), and the top of the cover body (101) is fixedly connected to a feeding assembly (104).

2. A quartz sand screening device according to claim 1, characterized in that: A motor (105) is fixedly connected to the center of the top of the cover body (101), quartz sand height measurement sensors (106) are fixedly installed on both left and right sides of the bottom of the cover body (101), and a stirring assembly (112) is fixedly connected to the output shaft of the motor (105).

3. A quartz sand screening device according to claim 2, characterized in that: The inner cavity of the screening container (103) is movably connected to a screening plate (110), and screening nets (111) are installed on the left and right sides of the screening plate (110). The stirring component (112) is rotatably connected to the top of the screening plate (110).

4. A quartz sand screening device according to claim 3, characterized in that: A vibration motor (114) is fixedly installed at the center of the bottom of the screening plate (110), and first springs (109) are fixedly connected to the front and rear sides of the bottom of the screening plate (110). A support ring (108) is fixedly connected to the bottom of the first spring (109), and the support ring (108) is fixedly installed at the bottom of the inner wall of the screening container (103).

5. A quartz sand screening device according to claim 4, characterized in that: A plurality of ultrasonic transducers (113) are installed at the bottom of the screening net (111), and the plurality of ultrasonic transducers (113) are evenly distributed at the bottom of the screening net (111).

6. A quartz sand screening device according to claim 5, characterized in that: A microporous nozzle (107) is installed around the surface of the spray dust suppression ring (102), and the water outlet of the microporous nozzle (107) is arranged to be inclined downward.

7. A quartz sand screening device according to claim 6, characterized in that: The stirring assembly (112) comprises a rotating rod (115), wherein the rotating rod (115) is mounted on the output shaft of the motor (105), the bottom of the rotating rod (115) is fixedly connected to a polygonal sleeve (116), the inner cavity of the polygonal sleeve (116) is slidably connected to a polygonal column (118), the bottom of the polygonal column (118) is fixedly connected to a stirring rod (120), the bottom of the stirring rod (120) is rotatably connected to the top center of the screening plate (110), and the bottom of the stirring rod (120) is movably connected to the top of the screening net (111).

8. A quartz sand screening device according to claim 7, characterized in that: A second spring (117) is fixedly connected to the top of the polygonal column (118), the top of the second spring (117) is fixedly connected to the top of the inner cavity of the polygonal sleeve (116), and a spiral blade (119) is fixedly connected to the top of the stirring rod (120).

9. A quartz sand screening device according to claim 8, characterized in that: The feed assembly (104) includes a feed port (121), the bottom of the feed port (121) is connected to a distribution hopper (122), the inner cavity of the distribution hopper (122) is fixedly connected to a partition (123), the motor (105) is located at the bottom of the partition (123), and the left and right sides of the bottom of the distribution hopper (122) are connected to a discharge pipe (124), and the discharge pipe (124) passes through the bottom of the cover body (101).

10. A quartz sand screening device according to claim 9, characterized in that: The diameters of the tops of the feed inlet (121) and the distribution hopper (122) are smaller than the diameters of the bottoms.

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