High-purity quartz sand production screening equipment

Abstract

The invention relates to the technical field of screening, in particular to high-purity quartz sand production screening equipment which comprises a rack, a vibration source, a storage barrel, a discharge barrel and a screening plate, the vibration source is arranged on the rack, the storage barrel is vertically arranged on the upper portion of the rack, and the cross sectional area of the storage barrel is adjustable. The storage barrel with the adjustable cross sectional area is arranged, before quartz sand is screened, the cross sectional area of the storage barrel is adjusted to be maximum, then the quartz sand is poured into the storage barrel, and then the cross sectional area is gradually reduced while the storage barrel shakes, so that the layering efficiency of the quartz sand is improved, and the quality of the quartz sand is improved. After the cross sectional area of the material storage barrel is reduced to the minimum, the quartz sand is screened through the material screening plates with different hole diameters, and due to the fact that the quartz sand is layered in advance according to the particle size before being screened, the screening efficiency is higher when the quartz sand is screened through the material screening plates, and screening hole blockage and screening hole abrasion of the material screening plates can be reduced easily.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of screening, in particular to a high-purity quartz sand production screening device. BACKGROUND

[0002] High-purity quartz sand refers to quartz sand with extremely low impurity (iron, aluminum, etc.) content, mainly used in high-end fields such as semiconductors, photovoltaics, and optics.

[0003] Because the downstream industries (such as semiconductor packaging and photovoltaic crucible) have strict requirements on the particle size of quartz sand, the quartz sand needs to be screened by a screening machine during production.

[0004] The existing screening machine usually includes multiple layers of screening meshes spaced apart in the vertical direction, and the aperture of the screening mesh decreases from top to bottom. When in use, the material to be screened is placed on the uppermost screening mesh, and then the vibration motor is started. Under the action of the vibration motor, the material rolls down along the inclined surface of the screening mesh, and in this process, the material with a particle size smaller than the aperture of the current screening mesh falls onto the next layer of screening mesh, so that materials with different particle sizes are separated.

[0005] However, the existing screening machine has the following problems when in use: because the materials with different particle sizes are first placed on the uppermost screening mesh, the uppermost screening mesh is prone to clogging, and the wear of the uppermost screening mesh is also more serious, which not only causes the overall screening efficiency to decrease, but also causes the maintenance cycle of the screening machine to be shortened. SUMMARY

[0006] Therefore, it is necessary to provide a high-purity quartz sand production screening device to solve the problem that the uppermost screening mesh is prone to clogging and the wear of the uppermost screening mesh is more serious.

[0007] The above-mentioned purpose is achieved by the following technical solutions: A high-purity quartz sand production screening device comprises: a rack; a vibration source arranged on the rack; a storage cylinder vertically arranged at the upper part of the rack, and the cross-sectional area of the storage cylinder is adjustable; a discharge cylinder vertically arranged at the lower part of the rack, and the inside of the discharge cylinder can be in communication with the bottom of the storage cylinder; a discharge port arranged on the circumference of the discharge cylinder, and the discharge port can be in communication with the inside of the discharge cylinder; a screening device arranged below the discharge port, used for screening the quartz sand falling in the discharge port.

[0008] Preferably, the storage cylinder comprises a ring-shaped base and a plurality of support side plates, the ring-shaped base is arranged on the rack, and the axis of the ring-shaped base is vertical, the plurality of support side plates are sequentially and circumferentially connected and surrounded into a ring, and are slidably connected to the upper surface of the ring-shaped base, and the plurality of support side plates can synchronously move towards or away from the center of the ring-shaped base along the radial direction of the ring-shaped base.

[0009] Preferably, the rack is provided with a first driving assembly for driving the plurality of support side plates to synchronously move towards or away from the center of the ring-shaped base along the radial direction of the ring-shaped base.

[0010] Preferably, the first driving assembly comprises a rotating ring, a plurality of guide wings, a plurality of horizontal rods and a vertical rod, the plurality of horizontal rods are connected to the plurality of support side plates one by one, the vertical rod is arranged at one end of the horizontal rod away from the support side plate, the rotating ring is rotatably arranged on the rack and can rotate around its axis, the plurality of guide wings are circumferentially and equidistantly arranged on the inner side of the rotating ring, the guide wings are provided with inclined guide grooves, and the vertical rod is slidably connected in the inclined guide grooves.

[0011] Preferably, the outer portion of the discharging cylinder and the discharging port are provided with an electromagnetic valve for controlling the opening and closing of the discharging port.

[0012] Preferably, the sieve comprises a plurality of sieve plates, and the plurality of sieve plates are arranged on the outer portion of the discharging cylinder in a vertical direction and are inclined, and the sieve hole diameters of the plurality of sieve plates decrease in a gradient from top to bottom.

[0013] Preferably, the discharging port has a plurality of discharging ports, and the plurality of discharging ports are arranged at different height positions of the discharging cylinder. The sieve has a plurality of sieves, and the plurality of sieves correspond to the plurality of discharging ports one by one, and each sieve comprises at least one sieve plate, and when the sieve plates included in the sieve are not less than two, the sieve hole diameters of the sieve plates decrease in a gradient from top to bottom.

[0014] Preferably, the discharging cylinder is slidably connected with a piston inside, and the piston can move along the axis of the discharging cylinder.

[0015] Preferably, the bottom of the rack is detachably provided with a plurality of concentric receiving grooves.

[0016] Preferably, the top of the rack is provided with a conical guide hopper, and the conical guide hopper is located above the storage cylinder and coaxial with the storage cylinder.

[0017] The beneficial effects of the present application are: The application sets the cross-sectional area adjustable storage cylinder, before screening the quartz sand, first adjusts the cross-sectional area of the storage cylinder to the maximum, then pours the quartz sand into the storage cylinder, then makes the cross-sectional area of the storage cylinder gradually reduce while shaking, so as to enhance the layering efficiency of the quartz sand, after the cross-sectional area of the storage cylinder is reduced to the minimum, the quartz sand is screened through the sieve plate with different aperture, since the quartz sand is layered according to the particle size in advance before screening, the screening efficiency is higher when screening through the sieve plate, and the sieve hole blockage of the sieve plate and the sieve hole wear of the sieve plate are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole schematic view of the high-purity quartz sand production screening equipment of the application; Figure 2 It is a front view of Figure 1 ; Figure 3 It is a top view of Figure 1 ; Figure 4 It is an A-A sectional view of Figure 3 ; Figure 5 It is a schematic view of the structure amplification at C of Figure 4 ; Figure 6 It is a schematic view of the structure amplification at B of Figure 4 ; Figure 7 It is a position schematic view of the lower supporting chassis in the high-purity quartz sand production screening equipment of the application; Figure 8 It is a front view of Figure 7 ; Figure 9 It is a D-D sectional view of Figure 8 ; Figure 10 It is a structure schematic view of the rotating ring in the high-purity quartz sand production screening equipment of the application; Figure 11 It is an upper structure schematic view of the rack in the high-purity quartz sand production screening equipment of the application; Figure 12 It is a lower structure schematic view of the rack in the high-purity quartz sand production screening equipment of the application; Figure 13 It is a distribution schematic view of the sieve plate in the high-purity quartz sand production screening equipment of the application; Figure 14 It is a position schematic view of the annular base in the high-purity quartz sand production screening equipment of the application; Figure 15It is a structure schematic view of a support side plate in a high-purity quartz sand production screening equipment of the application; Figure 16 It is a structure schematic view of a poking tooth in a high-purity quartz sand production screening equipment of the application.

[0019] Among them: 100, rack; 110, receiving trough; 120, conical guide hopper; 130, upper support ring; 140, first intermediate ring; 150, second intermediate ring; 160, cage support; 170, lower support base plate; 200, vibration source; 300, storage cylinder; 310, annular base; 320, support side plate; 400, discharge cylinder; 500, first driving assembly; 510, rotating ring; 520, guide wing plate; 521, inclined guide groove; 530, cross rod; 540, vertical rod; 550, first motor; 560, first driving wheel; 570, first driven wheel; 580, rotating rod; 590, second driven wheel; 591, limiting ring; 600, screening plate; 700, piston; 701, poking tooth; 702, rotating rod; 703, fixed rod; 704, first gear; 705, second gear; 706, second motor; 710, linear driving element. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the application clearer and more apparent, the following will further describe the application through examples and in conjunction with the drawings. It should be understood that the specific examples described herein are only used to explain the application and do not limit the application.

[0021] The serial numbers of components in this paper, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequence or technical meaning. And the "connection" and "coupling" of the application, unless otherwise specified, include direct and indirect connection (coupling). In the description of the application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. The orientation or positional relationship indicated in the drawing is based on the orientation or positional relationship shown in the drawing, and is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the application.

[0022] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature is "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. The first feature is "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is horizontally lower than the second feature.

[0023] As shown in Figures 1 to 16 A high-purity quartz sand production screening device includes a rack 100, a vibration source 200, a storage cylinder 300, a discharge cylinder 400, and a discharge port. The vibration source 200 is arranged on the rack 100. The storage cylinder 300 is vertically arranged at the upper part of the rack 100. The cross-sectional area of the storage cylinder 300 is adjustable. Specifically, the cross-sectional area of the storage cylinder 300 can be adjusted within a preset maximum value and a minimum value. The discharge cylinder 400 is vertically arranged at the lower part of the rack 100. The interior of the discharge cylinder 400 can be in communication with the bottom of the storage cylinder 300. The discharge port is arranged on the circumferential side of the discharge cylinder 400. The discharge port can be in communication or isolation with the interior of the discharge cylinder 400. A screen is arranged below the discharge port for screening the quartz sand falling in the discharge port.

[0024] In use, the worker first adjusts the cross-sectional area of the storage cylinder 300 to the maximum value, then pours the quartz sand to be screened into the storage cylinder 300, stops pouring when the amount of quartz sand in the storage cylinder 300 reaches the maximum pouring scale position, then starts the vibration source 200, and slowly adjusts the cross-sectional area of the storage cylinder 300 to the minimum value. In this process, because the storage cylinder 300 is subjected to vibration from the vibration source 200, the quartz sand in the storage cylinder 300 is forced to produce temporary gaps between each other. The quartz sand with small particle size quickly embeds into the gaps and gradually sinks down, at the same time, the quartz sand with small particle size pushes the quartz sand with large particle size from below during the sinking process, and the quartz sand with large particle size cannot enter the gaps of the quartz sand with small particle size, and finally the quartz sand with large particle size is continuously lifted upwards, and finally the quartz sand with different particle sizes is arranged in layers in the storage cylinder 300. Further, by slowly reducing the cross-sectional area of the storage cylinder 300 to the minimum value, the application can provide a larger vibration amplitude and particle displacement space for the quartz sand when the cross-sectional area of the storage cylinder 300 is larger, so that the quartz sand can obtain higher kinetic energy, so that the collision frequency between the quartz sand is increased, and the gap formation and filling cycle can be accelerated. As the cross-sectional area of the storage cylinder 300 gradually decreases, the radial constraint force on the quartz sand gradually increases, which creates a "dynamic screening field" that forces the quartz sand to rearrange, so that the quartz sand with small particle size is more easily moved downward, and the quartz sand with large particle size is more easily screened to the upper layer under the "bottleneck effect". Therefore, the purpose of improving the quartz sand layering efficiency can be achieved, and the quartz sand layering effect can be more significant, which is beneficial to the subsequent screening of the quartz sand.

[0025] After the cross-sectional area of the storage cylinder 300 is reduced to the minimum value, the quartz sand is sieved, specifically, the bottom of the storage cylinder 300 is connected to the inside of the discharge cylinder 400, at this time, the layered quartz sand enters the discharge cylinder 400, because the layered quartz sand is arranged in a layered form with small particle size in the lower layer and large particle size in the upper layer, the quartz sand that first enters the discharge cylinder 400 is quartz sand with small particle size, at this time, the discharge port is opened, the quartz sand in the discharge cylinder 400 starts to fall through the discharge port to the sieve below, because the quartz sand has been layered according to particle size before sieving, the particle size of the quartz sand falling on the sieve will not differ too much, it can be understood that if the particle size of the quartz sand falling on the sieve differs greatly, the quartz sand with large particle size and the quartz sand with small particle size will be easily squeezed into the same sieve hole of the sieve, and the present application reduces the particle size difference of the quartz sand falling on the sieve, thereby reducing the amount of sieve holes blocked by the sieve, that is, reducing the blockage and prolonging the maintenance cycle of the sieve, in addition, because the amount of quartz sand blocked in the sieve hole of the sieve is reduced, the resistance of the subsequent quartz sand falling along the inclined surface of the sieve from the "blockage" is significantly reduced, thereby improving the sieving efficiency, in addition, because the amount of quartz sand blocked in the sieve hole of the sieve is reduced, the sieve hole is less worn, thereby reducing the wear of the sieve and prolonging the service life of the sieve.

[0026] In further embodiments, as shown in Figure 9 、 Figure 14 and Figure 15 , the storage cylinder 300 includes an annular base 310 and a plurality of support side plates 320, the annular base 310 is arranged on the rack 100, and the axis of the annular base 310 is vertical, the plurality of support side plates 320 are sequentially and circumferentially lapped and enclosed into a ring, and are slidingly connected to the upper surface of the annular base 310, the plurality of support side plates 320 can synchronously approach or move away from the center of the annular base 310 along the radial direction of the annular base 310.

[0027] When the cross-sectional area of the storage cylinder 300 needs to be increased, the plurality of support side plates 320 are synchronously moved away along the radial direction of the annular base 310, at this time, the cross-sectional area of the annular area formed by the plurality of support side plates 320 is increased, on the contrary, when the cross-sectional area of the storage cylinder 300 needs to be reduced, the plurality of support side plates 320 are synchronously moved close along the radial direction of the annular base 310, at this time, the cross-sectional area of the annular area formed by the plurality of support side plates 320 is reduced.

[0028] Further, as shown in Figure 2 、 Figure 11 、 Figure 12 and Figure 13As shown, the rack 100 comprises an upper support ring 130, a first intermediate ring 140, a second intermediate ring 150, a cage support 160 and a lower support base 170, the lower support base 170 is installed on the ground, the second intermediate ring 150 is arranged at the upper end of the lower support base 170, the first intermediate ring 140 is elastically connected at the upper end of the second intermediate ring 150, and the two are connected through a plurality of compression springs uniformly distributed in the circumferential direction, the first intermediate ring 140 is coaxially fixedly connected with the annular base 310, and the annular base 310 is located on the inner side of the first intermediate ring 140, the cage support 160 is arranged between the first intermediate ring 140 and the upper support ring 130, and the storage cylinder 300 is located on the inner side of the cage support 160.

[0029] In a further embodiment, a first driving assembly 500 is arranged on the rack 100, and is used to drive the plurality of support side plates 320 to synchronously approach or move away from the center of the annular base 310 along the radial direction of the annular base 310.

[0030] Specifically, the first driving assembly 500 comprises a rotating ring 510, a guide wing plate 520, a horizontal rod 530 and a vertical rod 540, the horizontal rod 530 has a plurality of horizontal rods 530, the plurality of horizontal rods 530 are connected with the plurality of support side plates 320 one by one, the vertical rod 540 is arranged at one end of the horizontal rod 530 away from the support side plate 320, the rotating ring 510 is rotationally arranged on the rack 100, and the rotating ring 510 can rotate around its axis, the guide wing plate 520 has a plurality of guide wing plates 520, the plurality of guide wing plates 520 are circumferentially and equidistantly arranged on the inner side of the rotating ring 510, the guide wing plate 520 is provided with an inclined guide groove 521, the vertical rod 540 is slidingly connected in the inclined guide groove 521, and the inclined guide groove 521 is configured such that when the rotating ring 510 rotates clockwise, the plurality of support side plates 320 synchronously approach along the radial direction of the annular base 310, and when the rotating ring 510 rotates counterclockwise, the plurality of support side plates 320 synchronously move away along the radial direction of the annular base 310.

[0031] When it is needed to reduce the cross-sectional area of the storage cylinder 300, the rotating ring 510 is rotated clockwise around its axis, the rotating ring 510 drives the guide wing plate 520 to synchronously rotate, the guide wing plate 520 drives the vertical rod 540 to move towards the center of the annular base 310 through the inclined guide groove 521 arranged thereon, at this time, the vertical rod 540 drives the horizontal rod 530 to synchronously move, the horizontal rod 530 drives the support side plate 320 to synchronously move, so that the support side plate 320 moves towards the center of the annular base 310, thereby reducing the cross-sectional area of the annular area enclosed by the plurality of support side plates 320, and vice versa, when it is needed to increase the cross-sectional area of the storage cylinder 300, the rotating ring 510 is rotated counterclockwise around its axis, and the specific process is not described herein.

[0032] It should be further explained that, as shown in FIG. 1, Figure 14 and Figure 15As shown, in order to guide and limit the movement of the support side plate 320, the upper surface of the annular base 310 is circumferentially and equidistantly provided with a plurality of guide strips corresponding to the plurality of support side plates 320, and the extension direction of the guide strips is arranged at an angle with the diameter line of the annular base 310. The lower surface of the support side plate 320 is provided with a guide square groove which is slidingly connected to the guide strip.

[0033] When the support side plate 320 is subjected to the force from the cross rod 530, the support side plate 320 moves along the length direction of the guide strip under the guiding action of the guide strip and the guide square groove, so as to realize the mutual approach or mutual departure of the plurality of support side plates 320.

[0034] In order to enable the rotating ring 510 to rotate around its axis, as shown, Figure 5 The upper surface of the first intermediate ring 140 is provided with a first motor 550, the output end of the first motor 550 is fixedly connected with a first driving wheel 560, a rotating rod 580 is rotatably arranged between the first intermediate ring 140 and the upper support ring 130, the rotating rod 580 is provided with a first driven wheel 570, the first driven wheel 570 is frictionally and drivingly connected with the first driving wheel 560, and the rotating rod 580 is further provided with a second driven wheel 590 which is frictionally and drivingly connected with the inner circumferential surface of the rotating ring 510.

[0035] When the rotating ring 510 is rotated around its axis, the first motor 550 is started, the first motor 550 drives the first driving wheel 560 to rotate, the first driving wheel 560 drives the first driven wheel 570 to rotate, the first driven wheel 570 drives the rotating rod 580 to rotate, the rotating rod 580 drives the second driven wheel 590 to rotate, and the second driven wheel 590 drives the rotating ring 510 to rotate through the frictional driving connection with the inner circumferential surface of the rotating ring 510.

[0036] Further, in order to rotate and support the rotating ring 510, the lower end surface of the second driven wheel 590 is coaxially provided with a limiting ring 591, the upper end surface of the limiting ring 591 is in rotational contact with the lower end surface of the rotating ring 510, so as to realize the rotational support of the rotating ring 510.

[0037] Further, in order to make the support side plate 320 move uniformly on the upper and lower sides, the back surface of the support side plate 320 is provided with two cross rods 530 which are spaced apart upward and downward, the vertical rod 540 is fixedly connected with the two cross rods 530, and there are also two rotating rings 510 which are spaced apart upward and downward. In order to rotate and support the upper rotating ring 510 and drive the upper rotating ring 510 to rotate synchronously with the lower rotating ring 510, there are also two second driven wheels 590 and limiting rings 591, the two second driven wheels 590 are spaced apart on the rotating rod 580 and are frictionally and drivingly connected with the inner circumferential surface of the corresponding rotating ring 510.

[0038] In other embodiments, the first driving wheel 560, the first driven wheel 570 and the second driven wheel 590 can also be gears, and a tooth groove is formed on the inner circumferential surface of the rotating ring 510, so that the second driven wheel 590 is engaged with the inner circumferential surface of the rotating ring 510, to increase the accuracy of transmission.

[0039] In further embodiments, an electromagnetic valve is arranged on the outside of the discharge cylinder 400 and at the discharge port, for controlling the opening or closing of the discharge port. In the initial state, the electromagnetic valve controls each discharge port to be in the closed state, and when the discharge port needs to be opened, the electromagnetic valve is started, so that the corresponding discharge port is opened.

[0040] In further embodiments, the screening device includes a plurality of screening plates 600, which are arranged on the outside of the discharge cylinder 400 in the vertical direction and are inclined, and the screening aperture of the plurality of screening plates 600 decreases in a gradient from top to bottom.

[0041] Since the quartz sand that enters the discharge cylinder 400 first is quartz sand with small particle size, when the discharge port is opened, the quartz sand with small particle size first falls through the discharge port to the uppermost screening plate 600. Since the screening aperture of the plurality of screening plates 600 decreases in a gradient from top to bottom, the quartz sand with small particle size sequentially passes through the screen holes of each screening plate 600 from top to bottom, and finally rolls down along the inclined surface of the lowermost screening plate 600 to the designated collection position. When the quartz sand with small particle size is discharged, the quartz sand with medium particle size begins to fall through the discharge port to the uppermost screening plate 600. Similarly, the quartz sand with medium particle size sequentially passes through the screen holes of each screening plate 600 from top to bottom, until the quartz sand with medium particle size falls on the screening plate 600 with a smaller screening aperture than its particle size, and then rolls down along the inclined surface of the screening plate 600 to the designated collection position. Similarly, when the quartz sand with medium particle size is discharged from the inside of the discharge cylinder 400, the quartz sand with large particle size begins to be discharged from the discharge port of the discharge cylinder 400. Similarly, the quartz sand with large particle size falls on the uppermost screening plate 600, and since the screening aperture of the uppermost screening plate 600 is smaller than its particle size, the quartz sand with large particle size rolls down along the uppermost screening plate 600 to the designated collection position.

[0042] In another embodiment, the discharge port has multiple discharge ports, the multiple discharge ports are arranged at different height positions of the discharge cylinder 400, the sifter has multiple sifters, the multiple sifters correspond to the multiple discharge ports one by one, and each sifter includes at least one sieve plate 600. When the sieve plate 600 included by the sifter is not less than two, the sieve aperture of the sieve plate 600 decreases from top to bottom in a gradient. Taking the embodiment shown in the drawings as an example, the discharge cylinder 400 is provided with five discharge ports, the five discharge ports are arranged at different height positions of the discharge cylinder 400, and correspondingly, the sifter has five sifters. The sifter corresponding to the uppermost discharge port and the sifter corresponding to the lowermost discharge port each include only one sieve plate 600 without holes. The sifter corresponding to the second discharge port from top to bottom includes a sieve plate 600 with a medium aperture and a sieve plate 600 without holes. The sifter corresponding to the third discharge port from top to bottom includes a sieve plate 600 with a large aperture, a sieve plate 600 with a medium aperture, and a sieve plate 600 without holes. The sifter corresponding to the fourth discharge port from top to bottom includes a sieve plate 600 with a large aperture and a sieve plate 600 without holes.

[0043] After the quartz sand in the storage cylinder 300 is layered, the first discharge port from top to bottom is opened first. At this time, the quartz sand with small particle size is discharged from the first discharge port and rolls down to the designated discharge position along the corresponding sieve plate 600 without holes.

[0044] When it is observed that the quartz sand with medium particle size falling on the sieve plate 600 corresponding to the first discharge port begins to increase, the current discharge port is closed, and the second discharge port is opened. At this time, the quartz sand is discharged through the second discharge port. At this time, the quartz sand with medium particle size rolls down to the designated discharge position along the sieve plate 600 with a medium aperture because the particle size is greater than the aperture of the sieve plate 600 with a medium aperture. The quartz sand with small particle size falls down to the sieve plate 600 without holes through the sieve aperture of the sieve plate 600 with a medium aperture, and rolls down to the designated discharge position along the sieve plate 600 without holes.

[0045] When it is observed that the quartz sand with large particle size falling on the middle-aperture sieve plate 600 starts to become more and more, the current discharge port is closed, and the third discharge port is opened. At this time, the quartz sand falls on the large-aperture sieve plate 600. Since the particle size of the quartz sand with large particle size is greater than the aperture of the large-aperture sieve plate 600, the quartz sand with large particle size rolls down along the inclined surface of the large-aperture sieve plate 600 to the designated discharge position. The quartz sand with medium particle size and a small amount of quartz sand with small particle size pass through the large-aperture sieve plate 600 and fall on the middle-aperture sieve plate 600. The quartz sand with medium particle size falls along the inclined surface of the middle-aperture sieve plate 600 to the designated discharge position. The small amount of quartz sand with small particle size continues to fall on the non-aperture sieve plate 600 and then falls along the inclined surface of the non-aperture sieve plate 600 to the designated discharge position.

[0046] When it is observed that the quartz sand with large particle size falling on the large-aperture sieve plate 600 starts to become more and more, the current discharge port is closed, and the third discharge port is opened. At this time, the quartz sand falls on the large-aperture sieve plate 600. Since the particle size of the quartz sand with large particle size is greater than the aperture of the large-aperture sieve plate 600, the quartz sand with large particle size rolls down along the inclined surface of the large-aperture sieve plate 600 to the designated discharge position. The quartz sand with medium particle size and a small amount of quartz sand with small particle size pass through the large-aperture sieve plate 600 and fall on the middle-aperture sieve plate 600. The quartz sand with medium particle size falls along the inclined surface of the middle-aperture sieve plate 600 to the designated discharge position. The small amount of quartz sand with small particle size continues to fall on the non-aperture sieve plate 600 and then falls along the inclined surface of the non-aperture sieve plate 600 to the designated discharge position.

[0047] When it is observed that the quartz sand with large particle size falling on the large-aperture sieve plate 600 starts to become more and more, the current discharge port is closed, and the third discharge port is opened. At this time, the quartz sand falls on the large-aperture sieve plate 600. Since the particle size of the quartz sand with large particle size is greater than the aperture of the large-aperture sieve plate 600, the quartz sand with large particle size rolls down along the inclined surface of the large-aperture sieve plate 600 to the designated discharge position. The quartz sand with medium particle size and a small amount of quartz sand with small particle size pass through the large-aperture sieve plate 600 and fall on the middle-aperture sieve plate 600. The quartz sand with medium particle size falls along the inclined surface of the middle-aperture sieve plate 600 to the designated discharge position. The small amount of quartz sand with small particle size continues to fall on the non-aperture sieve plate 600 and then falls along the inclined surface of the non-aperture sieve plate 600 to the designated discharge position.

[0048] It can be understood that after the layered quartz sand, a part of quartz sand with different particle sizes will inevitably be mixed together in the middle section. Therefore, multiple sieve plates 600 with different apertures are arranged at the second, third, and fourth discharge ports to sieve the quartz sand falling at the corresponding discharge ports.

[0049] It can be understood that the multiple discharge ports are arranged at different height positions on the discharge cylinder 400 to maximize the area of the discharge ports and improve the sieving efficiency. It can be understood that taking five discharge ports as an example, if the five discharge ports are located at the same height on the circumference of the discharge cylinder 400, the transverse size of each discharge port is close to one-fifth of the arc length of the discharge cylinder 400. Conversely, if the five discharge ports are arranged at different height positions on the discharge cylinder 400, the transverse size of each discharge port can be greater than one-fifth of the arc length of the discharge cylinder 400.

[0050] Furthermore, there are multiple solenoid valves, each corresponding to a different discharge port, used to independently control the opening or closing of each discharge port.

[0051] Furthermore, to facilitate the collection of quartz sand of different particle sizes, the tilt angle of each screen plate 600 can be adjusted so that the falling point of quartz sand of different particle sizes is located at different positions in the radial direction of the discharge cylinder 400. That is, small-sized quartz sand falls in the same area in the radial direction of the discharge cylinder 400, medium-sized quartz sand falls in another area in the radial direction of the discharge cylinder 400, and large-sized quartz sand falls in yet another area in the radial direction of the discharge cylinder 400.

[0052] Furthermore, staff can manually observe the proportion of quartz sand of different particle sizes falling on the screen plate 600, and then manually control the opening or closing of each solenoid valve. Alternatively, an image detection module can be set up, such as a high-definition camera, to take real-time pictures of the screen plate 600, and then analyze and calculate the real-time pictures to determine the proportion of quartz sand of different particle sizes, and then automatically control the solenoid valves to open or close the corresponding discharge ports.

[0053] In a further embodiment, such as Figure 4 and Figure 6 As shown, a piston 700 is slidably connected inside the discharge cylinder 400, and the piston 700 can move along the axis of the discharge cylinder 400.

[0054] This design allows the discharge cylinder 400 to dynamically change according to the particle size of the quartz sand inside, thus preventing material buildup inside the discharge cylinder 400.

[0055] Furthermore, a linear drive element 710 is provided at the bottom of the piston 700, such as an electric telescopic rod, hydraulic cylinder, pneumatic cylinder, or other element with linear drive function. The telescopic end of the linear drive element 710 is coaxially connected to the piston 700. When the piston 700 needs to move along the cylinder wall of the discharge cylinder 400, the linear drive element 710 is activated, and the piston 700 is pulled synchronously through the telescopic end of the linear drive element 710. The linear drive element 710 is also signal-connected to multiple solenoid valves.

[0056] In the initial state, the upper end surface of the piston 700 is flush with the upper surface of the annular base 310, at this time, the piston 700 is used to isolate the inside of the storage cylinder 300 and the inside of the discharge cylinder 400, so as to ensure that the quartz sand in the storage cylinder 300 can be efficiently layered, when the electromagnetic valve corresponding to the first discharge port opens the first discharge port, the electromagnetic valve sends a signal to the linear drive element 710, the linear drive element 710 controls the piston 700 to fall to a height where the upper end surface is lower than the first discharge port, similarly, when the electromagnetic valve corresponding to the second discharge port opens the second discharge port, the piston 700 falls to a height where the upper end surface is lower than the second discharge port, when the electromagnetic valve corresponding to the third discharge port opens the third discharge port, the piston 700 falls to a height where the upper end surface is lower than the third discharge port, when the electromagnetic valve corresponding to the fourth discharge port opens the fourth discharge port, the piston 700 falls to a height where the upper end surface is lower than the fourth discharge port, when the electromagnetic valve corresponding to the fifth discharge port opens the fifth discharge port, the piston 700 falls to a height where the upper end surface is lower than the fifth discharge port.

[0057] Further, as shown in Figure 6 and Figure 16 , the telescopic end of the linear drive element 710 includes a fixed rod 703 and a rotating rod 702, the rotating rod 702 is coaxially fixedly connected with the piston 700, the upper surface of the piston 700 is circumferentially and equidistantly provided with a plurality of raking teeth 701, the rotating rod 702 is rotationally arranged on the fixed rod 703, a second gear 705 is arranged on the rotating rod 702, the outside of the fixed rod 703 is provided with a second motor 706, the output end of the second motor 706 is fixedly connected with a first gear 704, and the first gear 704 is engaged with the second gear 705.

[0058] In the process of discharging, the second motor 706 is started, the second motor 706 drives the first gear 704 to rotate, the first gear 704 drives the second gear 705 to rotate, the second gear 705 drives the rotating rod 702 to rotate, the rotating rod 702 drives the piston 700 to rotate, and the piston 700 drives the raking teeth 701 thereon to rotate synchronously, so as to raking the quartz sand on the circumference of the discharge cylinder 400 to the discharge port located on one side of the discharge cylinder 400, so that the quartz sand on the circumference of the discharge cylinder 400 can be uniformly discharged to the corresponding screening plate 600 through the discharge port.

[0059] In further embodiments, the bottom of the rack 100 is detachably provided with a plurality of concentric receiving grooves 110, in this embodiment, there are three receiving grooves 110, which respectively collect quartz sand of large, medium and small particle sizes.

[0060] In further embodiments, as shown in Figure 2As shown, the top of the rack 100 is provided with a tapered material guide hopper 120, which is located above the storage cylinder 300 and coaxial with the storage cylinder 300, and is arranged on the upper support ring 130.

[0061] The tapered material guide hopper 120 is arranged to guide the falling of the quartz sand, so that the quartz sand can be uniformly dropped into the storage cylinder 300.

[0062] The technical features of the above embodiments can be combined in any manner. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present disclosure.

[0063] The above embodiments only express several embodiments of the present application, the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of variations and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A high-purity quartz sand production screening equipment, characterized in that, include: frame; The vibration source is mounted on the frame; The storage cylinder is vertically arranged on the upper part of the frame, and the cross-sectional area of ​​the storage cylinder is adjustable; The discharge cylinder is vertically arranged at the bottom of the frame, and its interior can be connected to the bottom of the storage cylinder; The discharge port is located on one side of the discharge cylinder, and the discharge port can be connected to or isolated from the inside of the discharge cylinder. A sieve is located below the discharge port and is used to screen the quartz sand falling from the discharge port.

2. The high-purity quartz sand production screening equipment according to claim 1, characterized in that, The storage cylinder includes an annular base and multiple supporting side plates. The annular base is mounted on the frame and its axis is vertical. The multiple supporting side plates are connected end to end and form a ring around the circumference. They are slidably connected to the upper surface of the annular base. The multiple supporting side plates can move towards or away from the center of the annular base synchronously along the radial direction of the annular base.

3. The high-purity quartz sand production screening equipment according to claim 2, characterized in that, The frame is equipped with a first drive assembly for driving multiple support side plates to move synchronously toward or away from the center of the annular base along the radial direction of the annular base.

4. The high-purity quartz sand production screening equipment according to claim 3, characterized in that, The first drive assembly includes a rotating ring, guide vanes, crossbars, and vertical rods. There are multiple crossbars, each connected to a corresponding support side plate. The vertical rods are located at the ends of the crossbars away from the support side plates. The rotating ring is rotatably mounted on the frame and can rotate around its axis. There are multiple guide vanes, which are circumferentially spaced on the inner side of the rotating ring. The guide vanes have oblique guide grooves, and the vertical rods are slidably connected within the oblique guide grooves.

5. A high-purity quartz sand production screening equipment according to claim 1 or 4, characterized in that, An electromagnetic valve is installed on the outside of the discharge cylinder and at the discharge port to control the opening or closing of the discharge port.

6. The high-purity quartz sand production screening equipment according to claim 5, characterized in that, The screener includes multiple screen plates, which are vertically spaced and inclined outside the discharge cylinder, and the screening aperture of the multiple screen plates decreases in a gradient from top to bottom.

7. The high-purity quartz sand production screening equipment according to claim 5, characterized in that, There are multiple discharge ports, which are spaced out at different heights on the discharge cylinder. There are multiple screeners, and each screener corresponds to a different discharge port. Each screener includes at least one screen plate. When the screener includes at least two screen plates, the screen aperture of the screen plates decreases in a gradient from top to bottom.

8. The high-purity quartz sand production screening equipment according to claim 7, characterized in that, A piston is slidably connected inside the discharge cylinder, and the piston can move along the axis of the discharge cylinder.

9. The high-purity quartz sand production screening equipment according to claim 1, characterized in that, The bottom of the frame is detachably equipped with multiple concentric material receiving slots.

10. A high-purity quartz sand production screening equipment according to claim 1, characterized in that, A conical guide hopper is installed at the top of the frame. The conical guide hopper is located above the storage cylinder and is coaxial with the storage cylinder.

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