A multi-stage screening device for quartz sand production

Abstract

The present invention relates to the technical field of quartz sand screening equipment, and in particular to a multi-stage screening device for quartz sand production, comprising a chassis, a mounting frame connected to the chassis through a shock-absorbing spring, a barrel body provided on the upper part of the mounting frame, the barrel body comprising at least three cylinders, the cylinders are stacked from bottom to top, the lower parts of the side walls of the cylinders are connected to discharge channels, the top cylinder is equipped with a cylinder cover, the inner lower part of the bottom cylinder is connected to a conical guide plate, and the mounting frame and the top of the cylinder are provided with a connector. The present invention uses a connector composed of a groove ring, an arc-shaped pressure block, a wedge-shaped block, a spring I and an arc-shaped block, so that the assembly and disassembly of the entire cylinder can be completed by rotating the cylinder and the cylinder cover, the assembly of the filter screen and the cylinder can be completed by inserting the card plate into the card slot of the cylinder, and the disassembly of the filter screen and the cylinder can be completed by pulling the card plate out of the card slot of the cylinder, thereby realizing the function of quickly and conveniently loading and unloading the cylinder and the filter screen.

Description

Technical Field

[0001] The invention relates to the technical field of quartz sand screening equipment, in particular to a multi-stage screening device for quartz sand production. Background Art

[0002] In the production of quartz sand, multi-stage screening is a crucial process, which aims to classify the crushed quartz raw materials according to different particle size ranges to meet the specific requirements of quartz sand particle size, purity and other physical and chemical properties in glass manufacturing, casting, ceramics, chemicals, electronics, construction and other fields. Since different industries have different emphases on the quality standards of quartz sand, the fine screening of quartz sand is particularly critical.

[0003] In the field of fine screening of quartz sand, ultrasonic vibration screening machines are widely adopted due to their efficient screening capabilities and excellent processing of fine particles. This type of equipment combines the mechanical vibration of traditional vibrating screens with ultrasonic vibration technology, and significantly improves screening efficiency and screening accuracy through innovative screening methods, especially when processing sticky, easily agglomerated or extremely fine particle materials that are difficult to handle with traditional screening technology.

[0004] However, existing ultrasonic vibration screening machines have certain limitations in their design. For example, their cylinders and filter screens are usually assembled with fasteners such as screws and bolts, which means that when assembling and disassembling the cylinder or filter screen, the operator needs to repeatedly twist multiple parts. Such a design is not only time-consuming and labor-intensive, but also increases the complexity of the operation and the potential risk of errors. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a multi-stage screening device for quartz sand production with fast and convenient loading and unloading functions.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a multi-stage screening device for quartz sand production, comprising a chassis, a mounting frame connected to the chassis through a shock-absorbing spring, a vibrator installed on the mounting frame, a cylinder body provided on the upper part of the mounting frame, the cylinder body comprising at least three cylinders, the cylinders are stacked on each other from bottom to top, the lower parts of the side walls of the cylinders are connected to discharge channels, the topmost cylinder is equipped with a cylinder cover, the inside of the bottommost cylinder is connected to a conical guide plate, the mounting frame and the top of the cylinder are provided with a clamp, and the adjacent cylinders, the cylinders and the mounting frame are connected to each other. The mounting frame, cylinder and cylinder cover are all fixed by a connector, a feed hopper is installed in the middle of the cylinder cover, a hollow vibration-transmitting rod is installed on the top of the mounting frame, the hollow vibration-transmitting rod passes through the conical material guide plate and extends into the cylinder, at least two ultrasonic transducers are axially installed in the hollow vibration-transmitting rod, and slots are opened on the inner walls of the cylinders except the bottom cylinder, in which a card plate that can be pulled out upward is inserted, a filter screen is connected to the lower part of the card plate, and the filter screen is slidably inserted into the outer wall of the hollow vibration-transmitting rod, and the sieve holes of the filter screen distributed from top to bottom gradually decrease.

[0007] Preferably, the connector includes a groove ring, an arc-shaped pressure block, a wedge-shaped block, a spring I and an arc-shaped block. The mounting frame and the top of the cylinder are both connected to the groove ring, the groove of the groove ring is connected to the arc-shaped pressure block, the inner bottom of the groove ring is provided with a wedge-shaped block that can move up and down, the bottom of the wedge-shaped block and the inner bottom of the groove ring are connected with a spring I, the wedge-shaped block is located directly below the arc-shaped pressure block, the lower parts of the outer walls of the cylinder and the cylinder cover are both connected with arc-shaped blocks, the arc-shaped blocks are inserted into the corresponding groove rings and are located at the lower side of the arc-shaped pressure block, the arc-shaped blocks can be moved to the bottom of the arc-shaped pressure block and fit with the arc-shaped pressure block by rotation, and the arc-shaped blocks are provided with positioning grooves that fit with the wedge-shaped blocks.

[0008] Preferably, the filter screen includes a large magnetic ring, a large iron ring, a screen, a small magnetic ring and a small iron ring. The large iron ring is connected to the lower part of the card plate, and the large magnetic ring is slidably connected to the card plate. The large magnetic ring is located on the upper side of the large iron ring. The screen, the small magnetic ring and the small iron ring are all slidably inserted on the outer wall of the hollow vibration transmission rod. The small magnetic ring is located on the upper side of the small iron ring. The center of the screen is clamped between the small magnetic ring and the small iron ring, and the outer edge of the screen is clamped between the large magnetic ring and the large iron ring. The screen holes on the filter screen distributed from top to bottom gradually decrease.

[0009] Preferably, an adjuster for pulling the screen to arch upward is provided on the top of the small magnetic ring, and the adjuster includes a connecting ring connected to the top of the small magnetic ring, the connecting ring is slidably mounted on the outer wall of the hollow vibration transmission rod, an iron ring and a rotating ring are placed on the top of the small magnetic ring, the rotating ring is located inside the iron ring and outside the connecting ring, the rotating ring is threadedly connected to the iron ring, through holes are opened on the connecting ring at uniform intervals along the circumferential direction, a plug rod is slidably connected to the inner bottom of the through hole, a fixed block is connected to the inner top of the through hole, the bottom of the fixed block is fitted with the top of the plug rod, a movable block is connected to the side of the top of the plug rod close to the rotating ring, a spring II is connected between the movable block and the fixed block, at least two groups of sockets that fit the plug rod are spaced from top to bottom on the hollow vibration transmission rod, and extrusion blocks are connected to the inner wall of the rotating ring at uniform intervals along the circumferential direction. The extrusion block can be rotated to extrude the corresponding plug rod to move and insert it into the socket, and the material of the screen is soft metal.

[0010] Preferably, the regulator also includes a covering ring and a covering strip. The top of the connecting ring is connected to a covering ring for covering the jack and the gap between the connecting ring and the rotating ring. The covering ring is slidably mounted on the outer wall of the hollow vibration transmitting rod. The covering ring is conical. The top of the iron ring is provided with a covering strip inclined upward. The covering strip fits against the outer wall of the rotating ring to cover the threads on the rotating ring and the iron ring.

[0011] Preferably, a spiral shock rod is connected to the outer wall of the small iron ring, the spiral shock rod is located on the lower side of the screen and fits with the screen, a support is provided at intervals on the lower side of the spiral shock rod, the support is connected to the lower part of the inner wall of the cylinder to support the spiral shock rod, and the material of the spiral shock rod is soft metal.

[0012] Preferably, the support member includes a hinged seat connected to the lower part of the inner wall of the cylinder, the hinged seat is located on the lower side of the large iron ring, a support rod is hinged on the hinged seat, the support rod is located on the lower side of the spiral shock-inducing rod and contacts with the spiral shock-inducing rod, and a torsion spring is connected between the support rod and the hinged seat.

[0013] Preferably, a transparent window for viewing the material screening status is embedded in the cylinder cover.

[0014] Preferably, the lower parts of the outer walls of the cylinder and the cylinder cover are connected with an annular sealing strip, which is located on the upper side of the arc block and is used to seal the groove ring.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention uses a connector composed of a groove ring, an arc-shaped pressure block, a wedge-shaped clamping block, a spring I and an arc-shaped block, so that the assembly and disassembly of the entire cylinder can be completed by rotating the cylinder and the cylinder cover, and the assembly of the filter screen and the cylinder can be completed by inserting the clamping plate into the clamping groove of the cylinder, and the disassembly of the filter screen and the cylinder can be completed by pulling the clamping plate out of the clamping groove of the cylinder, thereby realizing the function of quickly and conveniently loading and unloading the cylinder and the filter screen, greatly shortening the time for manual loading and unloading of the cylinder and the filter screen, reducing the operation intensity, and thus achieving significant optimization of the production process.

[0017] 2. Through the synergistic effect of the large magnetic ring, large iron ring, small magnetic ring and small iron ring, the screen can be firmly clamped. By separating the large magnetic ring and the large iron ring, as well as the small magnetic ring and the small iron ring, the screen can be easily released, which is convenient for replacing the screen and improves the maintenance efficiency and flexibility of the equipment.

[0018] 4. The adjuster can pull the screen upward to the ideal state, which helps the quartz sand larger than the screen hole to slide to the edge of the screen, prevents excessive accumulation of materials in the center of the screen, and promotes the quartz sand larger than the screen hole to be quickly discharged through the discharge channel, effectively improving the screening efficiency and screening accuracy.

[0019] 5. Through the cooperation of torsion springs, support rods and spiral vibration rods, the screen can be supported, effectively avoiding the downward depression of the screen after long-term high-intensity work, ensuring that the screen is always in the best working state of arching upward, thereby improving the screening efficiency and accuracy; and through the spiral vibration rod as an amplifier and conductor of vibration energy, the vibration energy is efficiently transmitted to the screen, significantly increasing the vibration amplitude of the screen, thereby greatly improving the screening efficiency and screening accuracy of quartz sand. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2 It is a partial three-dimensional structural schematic diagram of the present invention.

[0022] Figure 3 It is an exploded view of the card connector of the present invention.

[0023] Figure 4 It is a three-dimensional structural schematic diagram of the wedge-shaped clamping block and spring II of the present invention.

[0024] Figure 5 It is a partial three-dimensional structural schematic diagram of the card connector of the present invention.

[0025] Figure 6 The three-dimensional structure of the cylinder of the present invention is shown in FIG. Figure 1 .

[0026] Figure 7 The three-dimensional structure of the cylinder of the present invention is shown in FIG. Figure 2 .

[0027] Figure 8 It is a schematic diagram of the connection between the cylinder, the clamping plate and the filter screen of the present invention.

[0028] Fig. 9 It is an exploded view of the filter screen and the regulator of the present invention.

[0029] Fig.10 A cross-sectional view of the regulator of the present invention Figure 1 .

[0030] Fig.11 A cross-sectional view of the regulator of the present invention Figure 2 .

[0031] Fig.12 It is an exploded view of the regulator of the present invention.

[0032] Fig.13 The figure is a schematic diagram of the installation of the spiral vibration-inducing rod, the hinged seat and the support rod of the present invention.

[0033] Fig.14 It is a schematic diagram of the three-dimensional structure of the spiral vibration-inducing rod, the hinged seat and the support rod of the present invention.

[0034] Fig.15 It is a connection diagram of the hinge seat, the support rod and the torsion spring of the present invention.

[0035] The serial numbers in the figure are: 1-chassis, 2-shock-absorbing spring, 3-mounting frame, 4-vibrator, 5-cylinder, 51-cylinder, 52-discharging channel, 53-cylinder cover, 54-clip connector, 541-groove ring, 542-arc pressure block, 543-wedge-shaped card block, 544-spring I, 545-arc block, 546-card slot, 55-conical guide plate, 6-feed hopper, 61-transparent window, 62-ring sealing strip, 7-hollow vibration transmission rod, 8-ultrasonic transducer, 9-card slot, 10-card plate, 11- Filter screen, 111-large magnetic ring, 112-large iron ring, 113-screen, 114-small magnetic ring, 115-small iron ring, 12-regulator, 120-jack, 121-connecting ring, 122-through hole, 123-insertion rod, 124-fixed block, 125-movable block, 126-spring II, 127-iron ring, 128-rotating ring, 129-extrusion block, 1210-covering ring, 1211-covering strip, 13-spiral vibration-inducing rod, 14-hinged seat, 15-support rod, 16-torsion spring. DETAILED DESCRIPTION

[0036] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0037] A multi-stage screening device for quartz sand production, see Figure 1-Figure 10, including a chassis 1, a shock-absorbing spring 2 and a mounting frame 3. Four shock-absorbing springs 2 are evenly spaced in the circumferential direction in the chassis 1. The mounting frame 3 is installed on the top of the shock-absorbing spring 2. A vibrator 4 is installed in the mounting frame 3. The vibrator 4 is an eccentric block vibrator 4. The eccentric block vibrator 4 has small amplitude, high frequency, low noise, strong and uniform exciting force, stable amplitude, simple structure and easy maintenance. A cylinder 5 is arranged on the upper part of the mounting frame 3. The cylinder 5 includes three cylinders 51 stacked on each other from bottom to top. The lower part of the side wall of the cylinder 51 is connected with a discharge channel 52. The three discharge channels 52 are distributed in a ring shape to guide the quartz sand of different particle sizes screened out to different directions, ensuring that the quartz sand of each particle size screened out is accurately separated and collected, thereby achieving high-quality In order to facilitate the classification and subsequent processing of large amounts of materials, the topmost cylinder 51 is equipped with a cylinder cover 53, and the inner lower part of the bottommost cylinder 51 is connected to a conical material guide plate 55. The top of the cylinder cover 53 and the outer wall of the cylinder 51 are connected with handles, and the cylinder cover 53 and the cylinder 51 can be easily manipulated by the handles. The mounting frame 3 and the top of the cylinder 51 are both provided with a connector 54. The bottommost cylinder 51 is firmly assembled with the mounting frame 3 through the connector 54 on the mounting frame 3, and the cylinder cover 53 is firmly assembled with the cylinder 51 through the connector 54 on the topmost cylinder 51. The two upper and lower adjacent cylinders 51 are also firmly assembled through their respective connectors 54. The connector 54 includes a groove ring 541, an arc-shaped pressure block 542, a wedge-shaped block 543, a spring I 544 and an arc-shaped Block 545, the top of the mounting frame 3 and the cylinder 51 are both connected with a groove ring 541, the groove of the groove ring 541 is connected with an arc-shaped pressure block 542, the inner bottom of the groove ring 541 is spaced apart with five slide grooves, the slide groove is slidably connected with a wedge-shaped block 543 that can move up and down, a positioning rod is connected in the slide groove, the wedge-shaped block 543 is slidably connected to the positioning rod, and a spring I 544 is sleeved on the positioning rod, and the two ends of the spring I 544 are respectively connected to the bottom of the wedge-shaped block 543 and the inner bottom of the slide groove, the wedge-shaped block 543 is located directly below the arc-shaped pressure block 542, the lower part of the outer wall of the cylinder 51 and the cylinder cover 53 are both connected with an arc-shaped block 545, and the arc-shaped block 545 is inserted into the corresponding groove ring 541 and is located at the lower side of the arc-shaped pressure block 542, and the arc-shaped block 545 The arc block 545 is provided with five slots 546 which fit with the wedge-shaped block 543. The top of the mounting frame 3 is conical so as to better fit with the conical guide plate 55. A feed hopper 6 is provided in the middle of the cylinder cover 53. A hollow vibration transmission rod 7 is provided on the top of the mounting frame 3. The hollow vibration transmission rod 7 penetrates the conical guide plate 55 and extends into the cylinder 51. Two upper and lower ultrasonic transducers 8 are provided in the hollow vibration transmission rod 7. The inner side walls of the topmost cylinder 51 and the middle cylinder 51 are provided with slots 9. A card plate 10 which can be pulled out upward is inserted in the slots 9. A filter screen 11 is connected to the lower part of the card plate 10. The filter screen 11 is slidably inserted into the outer wall of the hollow vibration transmission rod 7.The mesh holes of the upper filter screen 11 are larger than those of the lower filter screen 11. The filter screen 11 includes a large magnetic ring 111, a large iron ring 112, a screen 113, a small magnetic ring 114 and a small iron ring 115. The large iron ring 112 is connected to the lower part of the card plate 10. The large magnetic ring 111 is slidably connected to the card plate 10. The large magnetic ring 111 is located on the upper side of the large iron ring 112. The screen 113, the small magnetic ring 114 and the small iron ring 115 are all slidably plugged on the outer wall of the hollow vibration transmission rod 7. The small magnetic ring 114 is located on the upper side of the small iron ring 115. The center of the screen 113 is clamped between the small magnetic ring 114 and the small iron ring 115. The outer edge of the screen 113 is clamped between the large magnetic ring (111) and the large iron ring 112. The mesh holes of the screen 113 on the upper filter screen 11 are larger than those of the screen 113 on the lower filter screen 11.

[0038] When it is necessary to assemble the cylinder 5 and the filter screen 11, the cylinder 51 connected with the conical guide plate 55 is inserted downward into the groove ring 541 at the top of the mounting frame 3, and the arc block 545 on the cylinder 51 connected with the conical guide plate 55 is inserted into the groove ring 541 at the top of the mounting frame 3. The arc block 545 is lower than the arc pressure block 542 in the groove ring 541 at the top of the mounting frame 3. The cylinder 51 connected with the conical guide plate 55 is rotated to drive the arc block 545 thereon to rotate to the bottom of the arc pressure block 542 and fit with the arc pressure block 542, so that the arc block 545 is pressed and locked in the groove ring 541 by the arc pressure block 542, so that the cylinder 51 connected with the conical guide plate 55 can be assembled with the mounting frame 3. When the arc block 545 rotates, it squeezes the inclined surface on the wedge-shaped block 543 to push the wedge-shaped block 543 downward, and the spring I 544 is compressed accordingly. When the five positioning grooves 546 on the arc block 545 are aligned with the five wedge-shaped blocks 543 respectively, under the resetting action of the spring I 544, the wedge-shaped block 543 can be moved upward and inserted into the positioning grooves 546 on the arc block 545, so that the arc block 545 can be locked to prevent the arc block 545 from rotating and disengaging from the arc pressure block 542, so that the cylinder 51 connected with the conical guide plate 55 can be firmly assembled with the mounting frame 3.

[0039] By repeating the above operation, the upper and lower adjacent cylinders 51 can be firmly assembled together, and the cylinder cover 53 and the uppermost cylinder 51 can be firmly assembled together. After the middle cylinder 51 is installed, the filter screen 11 with a small mesh is first installed in the middle cylinder 51, and the clamping plate 10 connected to the filter screen 11 with a small mesh is inserted into the clamping groove 9 of the middle cylinder 51, and the filter screen 11 with a small mesh can be installed in the middle cylinder 51. Before assembling the cylinder cover 53, the filter screen 11 with a larger mesh is first installed in the uppermost cylinder 51, and the clamping plate 10 connected to the filter screen 11 with a larger mesh is inserted into the clamping groove 9 of the uppermost cylinder 51, and the filter screen 11 with a larger mesh can be installed in the uppermost cylinder 51. After the filter screen 11 is installed in the cylinder 51, the screen 113, the small magnetic ring 114 and the small iron ring 115 on the filter screen 11 are then sleeved on the outer wall of the hollow vibration transmission rod 7.

[0040] When quartz sand screening is required, the quartz sand material is introduced into the cylinder 51 through the feed hopper 6, and the quartz sand is preliminarily screened through the screen 113 on the upper filter screen 11. The quartz sand smaller than the sieve holes of the upper screen 113 falls onto the lower filter screen 11, and the quartz sand is secondary screened through the screen 113 on the lower filter screen 11. The quartz sand smaller than the sieve holes of the lower screen 113 falls onto the conical guide plate 55, thereby realizing multi-stage screening of the quartz sand. The three quartz sands of different particle sizes screened out are discharged outward through three discharge channels 52 respectively. Controlling the vibrator 4 to work can make the mounting frame 3 drive the cylinder 5 to vibrate, thereby driving the filter screen 11 to vibrate and effectively vibrate and screen the quartz sand. At the same time, controlling the ultrasonic transducer 8 to work can convert high-frequency electrical vibration into mechanical vibration of the same frequency, and efficiently transmit the vibration energy to the small magnetic ring 114 and the small iron ring 115 through the hollow vibration transmission rod 7. The small magnetic ring 114 and the small iron ring 115 serve as the transmission nodes of the vibration energy, and finally transmit the vibration to the screen 113. Thus, the device combines the mechanical vibration of the traditional vibrating screen with the ultrasonic vibration technology, enhances the vibration effect of the screen 113, not only helps the quartz sand material to move smoothly on the screen surface, but also promotes the efficient screening process. More importantly, ultrasonic vibration helps to prevent the quartz sand material from clogging the screen hole, thereby significantly improving the screening efficiency and screening accuracy.

[0041] When the screen 113 is worn out after long-term use and needs to be replaced, the cylinder cover 53 is rotated to drive the arc block 545 thereon to rotate, and disengage the arc pressure block 542 in the groove ring 541 at the top of the uppermost cylinder 51, thereby releasing the lock between the cylinder cover 53 and the uppermost cylinder 51, and then the cylinder cover 53 can be removed from the top of the uppermost cylinder 51, and then the upper side filter screen 11 can be taken out from the uppermost cylinder 51, and the above operation is repeated to release the lock between the uppermost cylinder 51 and the middle cylinder 51, and then the uppermost cylinder 51 can be taken away, and then the lower side filter screen 11 can be taken out from the middle cylinder 51. After the filter screen 11 is taken out, the large magnetic ring 111 and the large iron ring 112 are separated, and the small magnetic ring 114 and the small iron ring 115 are separated, so that the clamping of the screen 113 can be released to replace the screen 113. After the new screen 113 is placed on the large iron ring 112, the large magnetic ring 111 is placed on the upper side of the screen 113, and the small magnetic ring 114 and the small iron ring 115 are placed on the upper and lower sides of the screen 113 respectively. Through the magnetic force of the large magnetic ring 111, the large iron ring 112 can be firmly adsorbed and fixed to the bottom of the large magnetic ring 111, and through the magnetic force of the small magnetic ring 114, the small iron ring 115 can be firmly adsorbed and fixed to the bottom of the small magnetic ring 114, thereby clamping the screen 113 firmly.

[0042] In this way, the device uses a connector 54 composed of a groove ring 541, an arc-shaped pressure block 542, a wedge-shaped block 543, a spring I 544 and an arc-shaped block 545, so that the entire cylinder 5 can be assembled and disassembled by rotating the cylinder 51 and the cylinder cover 53. The filter screen 11 and the cylinder 5 can be assembled by inserting the clamping plate 10 into the clamping groove 9 of the cylinder 51, and the filter screen 11 and the cylinder 5 can be disassembled by pulling the clamping plate 10 out of the clamping groove 9 of the cylinder 51, thereby realizing the function of quickly and conveniently loading and unloading the cylinder 5 and the filter screen 11, greatly shortening the time for manual loading and unloading of the cylinder 5 and the filter screen 11, reducing the operating intensity, and thus achieving significant optimization of the production process. Through the coordinated action of the large magnetic ring 111, the large iron ring 112, the small magnetic ring 114 and the small iron ring 115, the screen 113 can be firmly clamped. By separating the large magnetic ring 111 and the large iron ring 112, as well as the small magnetic ring 114 and the small iron ring 115, the screen 113 can be easily released, which facilitates the replacement of the screen 113 and improves the maintenance efficiency and flexibility of the equipment.

[0043] See also Figure 8-Figure 12The top of the small magnetic ring 114 is provided with an adjuster 12 for pulling the screen 113 to arch upward. The adjuster 12 includes a connecting ring 121 connected to the top of the small magnetic ring 114. The connecting ring 121 is slidably sleeved on the outer wall of the hollow vibration transmission rod 7. An iron ring 127 and a rotating ring 128 are placed on the top of the small magnetic ring 114. The rotating ring 128 is located inside the iron ring 127 and outside the connecting ring 121. The rotating ring 128 is threadedly connected to the iron ring 127. Three through holes 122 are evenly spaced along the circumferential direction on the connecting ring 121. The inner bottom of the through hole 122 is slidably connected to the plug rod 123. The inner side of the through hole 122 A fixed block 124 is connected to the top, and the bottom of the fixed block 124 fits with the top of the plug rod 123. A movable block 125 is connected to the side of the top of the plug rod 123 near the rotating ring 128. A spring II 126 is connected between the movable block 125 and the fixed block 124. The hollow vibration transmission rod 7 is provided with two groups of upper and lower sockets 120 that fit with the plug rod 123. The number of sockets 120 in each group is three rows, and the three rows of sockets 120 are evenly distributed along the circumference of the hollow vibration transmission rod 7. The number of sockets 120 in each row is five, and the five sockets 120 in each row are evenly distributed from top to bottom. The lowermost socket 120 of the upper group is located above the upper ultrasonic transducer 8. The lowermost jack 120 of the lower group is located on the upper side of the lower ultrasonic transducer 8. The outer wall of the rotating ring 128 is connected with friction strips at uniform intervals along the circumferential direction. The friction between the rotating ring 128 and the hand can be increased through friction to prevent slipping, so as to facilitate the rotation of the rotating ring 128. The inner wall of the rotating ring 128 is connected with three extrusion blocks 129 at uniform intervals along the circumferential direction. The three extrusion blocks 129 correspond to the three insertion rods 123 one by one. The shape of the extrusion block 129 is arc-shaped, and the inner wall of the extrusion block 129 adopts an inclined surface design, so that the extrusion block 129 can rotate to squeeze the corresponding insertion rod 123 through its upper inclined surface to move and insert it into the jack 120. Inside, the top of the connecting ring 121 is connected with a covering ring 1210 for covering the insertion hole 120 and the gap between the connecting ring 121 and the rotating ring 128. The covering ring 1210 is slidably mounted on the outer wall of the hollow vibration transmission rod 7. The covering ring 1210 is conical to guide the quartz sand material downward. The top of the iron ring 127 is installed with a covering strip 1211 inclined upward. The covering strip 1211 fits with the outer wall of the rotating ring 128 to cover the threads on the rotating ring 128 and the iron ring 127. The material of the screen 113 is soft metal such as copper, aluminum or alloy, which has good flexibility and elasticity and can be deformed under the action of external force.

[0044] Through the magnetic force of the small magnetic ring 114, the iron ring 127 can be firmly adsorbed and fixed on the top of the small magnetic ring 114. After the lower filter screen 11 is installed inside the middle cylinder 51, the fixed clamping plate 10 is manually pressed to prevent the large iron ring 112 and the large magnetic ring 111 from moving upward, thereby ensuring that the outer side of the screen 113 is firmly pressed. Then, the upward pull ring 128 drives the small magnetic ring 114 to move upward, and the upward movement of the small magnetic ring 114 prompts the small iron ring 115 to move upward accordingly, thereby pulling the screen 113 to arch upward to the required amplitude. When the screen 113 reaches the ideal arched state, one hand fixes the iron ring 127, and the other hand rotates the rotating ring 128 to drive the extrusion block 129 to rotate and extrude the corresponding plug rod 123 to move and insert it into the socket 120, so that the connecting ring 121 can be locked to prevent it from moving down, and the small magnetic ring 114 is pulled by the connecting ring 121, so that the small magnetic ring 114 and the small iron ring 115 are locked to prevent the small magnetic ring 114 and the small iron ring 115 from moving down, so that the screen 113 can maintain the upward arched state for screening. The upward arching of the screen 113 for screening helps to make the quartz sand with a size larger than its sieve hole slide to the edge of the screen 113, prevent the material from excessively piling up in the center of the screen 113, and promote the quartz sand with a size larger than the sieve hole size of the screen 113 to be quickly discharged outward through the discharge channel 52, effectively improving the screening efficiency and screening accuracy.

[0045] The covering ring 1210 can effectively cover the insertion hole 120 and the gap between the connecting ring 121 and the rotating ring 128, thereby preventing quartz sand from entering the hollow vibration transmission rod 7 through the insertion hole 120, thereby avoiding wear or malfunction of the internal ultrasonic transducer 8 due to the entry of quartz sand, and preventing quartz sand from entering the gap between the connecting ring 121 and the rotating ring 128 and causing the extrusion block 129 to get stuck; the covering strip 1211 can tightly cover the threaded area on the rotating ring 128 and the iron ring 127 to prevent quartz sand from entering the threads, thereby maintaining the smooth rotation and adjustment function between the rotating ring 128 and the iron ring 127.

[0046] After the upper filter screen 11 is installed in the uppermost cylinder 51, the above operation is repeated to pull the screen 113 on the upper filter screen 11 to an upwardly arched state for screening. When the insertion rod 123 is moved and inserted into the insertion hole 120, the movable block 125 is driven to move in the direction close to the fixed block 124 to compress the spring II 126. When the filter screen 11 needs to be taken out of the cylinder 51, the iron ring 127 is fixed with one hand and the rotating ring 128 is reversed with the other hand, thereby driving the extrusion block 129 to reverse and disengage from the insertion rod 123. Under the resetting action of the spring II 126, the fixed block 124 drives the insertion rod 123 to be pulled out of the insertion hole 120 to release the lock on the connecting ring 121 and the small magnetic ring 114, and then the filter screen 11 can be taken out of the cylinder 51.

[0047] See also Figure 13-Figure 15 A spiral shock-inducing rod 13 is connected to the outer wall of the small iron ring 115, and the spiral shock-inducing rod 13 is located at the lower side of the screen 113 and fits with the screen 113. Five support members are evenly spaced along the circumferential direction at the lower part of the inner wall of the top cylinder 51 and the middle cylinder 51. The upper support member is located at the lower side of the upper spiral shock-inducing rod 13, and the lower support member is located at the lower side of the lower spiral shock-inducing rod 13. The support member includes a hinged seat connected to the lower part of the inner wall of the cylinder 51 14, the hinged seat 14 is located at the lower side of the large iron ring 112, and a support rod 15 is hinged on the hinged seat 14. The support rod 15 is located at the lower side of the spiral vibration rod 13 and contacts with the spiral vibration rod 13. Two torsion springs 16 are symmetrically connected between the support rod 15 and the hinged seat 14. The spiral vibration rod 13 is made of soft metal such as copper, aluminum or alloy, has good flexibility and elasticity, can be deformed under the action of external force, and thus better fit the screen 113.

[0048] The torsion spring 16 can keep the support rod 15 in close contact with the spiral shock rod 13, and the support rod 15 can support the spiral shock rod 13, so that the spiral shock rod 13 can be kept in close contact with the upwardly arched screen 113, so that the screen 113 can be supported by the cooperation of the torsion spring 16, the support rod 15 and the spiral shock rod 13, effectively avoiding the downward depression phenomenon that may occur after long-term high-intensity work of the screen 113, ensuring that the screen 113 is always in the best working state of arching upward, thereby improving the screening efficiency and accuracy. When the hollow shock-transmitting rod 7 vibrates, the vibration energy is transmitted to the spiral shock-inducing rod 13 through the small iron ring 115. Subsequently, the spiral shock-inducing rod 13 acts as an amplifier and conductor of the vibration energy, and efficiently transmits the vibration energy to the screen 113, significantly increasing the vibration amplitude of the screen 113, thereby greatly improving the screening efficiency and screening accuracy of quartz sand.

[0049] See also Figure 1 Two transparent windows 61 are symmetrically embedded and installed on the cylinder cover 53 with the feed hopper 6 as the center, and the quartz sand screening situation in the cylinder 5 can be easily checked through the transparent windows 61.

[0050] join Figure 1 and Figure 3 As shown, the lower parts of the outer walls of the cylinder 51 and the cylinder cover 53 are connected with an annular sealing strip 62 , and the annular sealing strip 62 is located on the upper side of the arc block 545 .

[0051] When the cylinder cover 53 is inserted into the groove ring 541 at the uppermost end, the annular sealing strip 62 on the cylinder cover 53 is also inserted into the groove of the groove ring 541 to form a tight seal; similarly, when the cylinder 51 is inserted into the groove ring 541 on its lower side, the annular sealing strip 62 on the cylinder 51 is also inserted into the corresponding groove ring 541 to achieve a sealing effect, thereby effectively preventing the leakage of fine particles and the intrusion of external impurities.

[0052] The above-mentioned embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those skilled in the art, several modifications, improvements and substitutions can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims

1. A multi-stage screening device for producing quartz sand, comprising a chassis (1), a mounting frame (3) connected to the chassis (1) via a shock-absorbing spring (2), a vibrator (4) mounted on the mounting frame (3), a cylinder (5) being provided on the upper part of the mounting frame (3), characterized in that: The cylinder body (5) comprises at least three cylinders (51), which are stacked from bottom to top. The lower parts of the side walls of the cylinders (51) are connected to discharge channels (52). The topmost cylinder (51) is provided with a cylinder cover (53). The bottommost cylinder (51) is internally connected to a conical guide plate (55). The mounting frame (3) and the top of the cylinders (51) are provided with a clamp (54). Adjacent cylinders (51), the cylinder (51) and the mounting frame (3), and the cylinder (51) and the cylinder cover (53) are fixed by the clamp (54). A feed hopper (6) is installed in the middle of the cylinder cover (53). A hollow vibration transmission rod (7) is installed on the top of the mounting frame (3). The hollow vibration transmission rod (7) The conical guide plate (55) extends into the cylinder (51), at least two ultrasonic transducers (8) are axially mounted in the hollow vibration transmission rod (7), and the inner side walls of the other cylinders (51) except the bottom cylinder (51) are provided with a card slot (9), a card plate (10) that can be withdrawn upward is inserted into the card slot (9), and a filter screen (11) is connected to the lower part of the card plate (10), and the filter screen (11) is slidably inserted into the outer wall of the hollow vibration transmission rod (7), and the screen holes of the filter screen (11) distributed from top to bottom gradually decrease, and the filter screen (11) includes a large magnetic ring (111), a large iron ring (112), a screen (113), a small magnetic ring (114) and a small iron ring (115); An adjuster (12) for pulling the screen (113) to arch upward is provided on the top of the small magnetic ring (114). The adjuster (12) includes a connecting ring (121) connected to the top of the small magnetic ring (114). The connecting ring (121) is slidably mounted on the outer wall of the hollow vibration transmission rod (7). An iron ring (127) and a rotating ring (128) are placed on the top of the small magnetic ring (114). The rotating ring (128) is located inside the iron ring (127) and outside the connecting ring (121). The rotating ring (128) is threadedly connected to the iron ring (127). Through holes (122) are evenly spaced along the circumferential direction on the connecting ring (121). The inner bottom of the through hole (122) is slidably connected to a plug rod (123). A fixed block (124) is connected to the inner top of (122), the bottom of the fixed block (124) is fitted with the top of the insertion rod (123), a movable block (125) is connected to the top of the insertion rod (123) near the rotating ring (128), a spring II (126) is connected between the movable block (125) and the fixed block (124), at least two groups of insertion holes (120) that fit with the insertion rod (123) are spaced from top to bottom on the hollow vibration transmission rod (7), and extrusion blocks (129) are connected to the inner wall of the rotating ring (128) at uniform intervals along the circumferential direction, and the extrusion block (129) can be rotated to squeeze the corresponding insertion rod (123) to move and insert it into the insertion hole (120), and the screen (113) is made of soft metal; The regulator (12) further comprises a covering ring (1210) and a covering strip (1211). The top of the connecting ring (121) is connected with the covering ring (1210) for covering the insertion hole (120) and the gap between the connecting ring (121) and the rotating ring (128). The covering ring (1210) is slidably sleeved on the outer wall of the hollow vibration transmission rod (7). The covering ring (1210) is conical. The top of the iron ring (127) is provided with a covering strip (1211) inclined upward. The covering strip (1211) is fitted with the outer wall of the rotating ring (128) to cover the threads on the rotating ring (128) and the iron ring (127).

2. A multi-stage screening device for quartz sand production according to claim 1, characterized in that: The connector (54) comprises a groove ring (541), an arc-shaped pressure block (542), a wedge-shaped clamping block (543), a spring I (544) and an arc-shaped block (545). The mounting frame (3) and the top of the cylinder (51) are both connected with the groove ring (541). The groove of the groove ring (541) is connected with the arc-shaped pressure block (542). The inner bottom of the groove ring (541) is provided with a wedge-shaped clamping block (543) capable of moving up and down. The bottom of the wedge-shaped clamping block (543) and the inner bottom of the groove ring (541) are connected with a spring I (544). 4), the wedge-shaped clamping block (543) is located directly below the arc-shaped pressing block (542), and the lower parts of the outer walls of the cylinder (51) and the cylinder cover (53) are connected with arc-shaped blocks (545). After the arc-shaped blocks (545) are inserted into the corresponding groove ring (541), they are located below the arc-shaped pressing block (542). The arc-shaped blocks (545) can be moved to the bottom of the arc-shaped pressing block (542) by rotation and fit with the arc-shaped pressing block (542). The arc-shaped blocks (545) are spaced apart with clamping grooves (546) that fit with the wedge-shaped clamping blocks (543).

3. A multi-stage screening device for quartz sand production according to claim 2, characterized in that: The large iron ring (112) is connected to the lower part of the card plate (10), the large magnetic ring (111) is slidably connected to the card plate (10), the large magnetic ring (111) is located on the upper side of the large iron ring (112), the screen (113), the small magnetic ring (114) and the small iron ring (115) are all slidably plugged on the outer wall of the hollow vibration transmission rod (7), the small magnetic ring (114) is located on the upper side of the small iron ring (115), the center of the screen (113) is clamped between the small magnetic ring (114) and the small iron ring (115), the outer edge of the screen (113) is clamped between the large magnetic ring (111) and the large iron ring (112), and the screen holes of the screen (113) on the filter screen (11) distributed from top to bottom gradually decrease.

4. A multi-stage screening device for quartz sand production according to claim 3, characterized in that: A spiral shock-inducing rod (13) is connected to the outer wall of the small iron ring (115), the spiral shock-inducing rod (13) is located at the lower side of the screen (113) and is in contact with the screen (113), a support member is provided at intervals on the lower side of the spiral shock-inducing rod (13), and the support member is connected to the lower part of the inner wall of the cylinder (51) to support the spiral shock-inducing rod (13), and the material of the spiral shock-inducing rod (13) is soft metal.

5. A multi-stage screening device for quartz sand production according to claim 4, characterized in that: The support member comprises a hinge seat (14) connected to the lower part of the inner wall of the cylinder (51), the hinge seat (14) being located at the lower side of the large iron ring (112), a support rod (15) being hingedly connected to the hinge seat (14), the support rod (15) being located at the lower side of the spiral vibration-inducing rod (13) and in contact with the spiral vibration-inducing rod (13), and a torsion spring (16) being connected between the support rod (15) and the hinge seat (14).

6. A multi-stage screening device for quartz sand production according to claim 1, characterized in that: A transparent window (61) for viewing material screening conditions is embedded in the barrel cover (53).

7. A multi-stage screening device for quartz sand production according to claim 2, characterized in that: The lower parts of the outer walls of the cylinder (51) and the cylinder cover (53) are both connected with an annular sealing strip (62), which is located on the upper side of the arc block (545) and is used to seal the groove ring (541).

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