Double glass cover rotary vibration screen control feeding device

Abstract

The present application relates to the technical field of rotary vibration screen, in particular to a double glass cover rotary vibration screen control feeding device, which comprises a rotary vibration screen base, a screening frame is arranged on the top of the rotary vibration screen base through supporting springs, and a vibration motor is fixedly arranged at the bottom of the screening frame. By adopting the inner and outer double-layer glass cover and cooperating with the closed air interlayer structure, compared with the traditional single-layer sealing cover body, the synchronous improvement of heat insulation, noise reduction and visibility is realized, the heat transfer of high-temperature materials can be effectively blocked, the problem of dew condensation on the inner wall of the cover body is avoided, the vibration and noise generated by screening are greatly attenuated by the gas damping effect in the interlayer, and the working environment is improved; the double-layer glass cover adopts the combination of positioning assembly and sealing plug-in structure, which not only improves the stability of assembly connection, but also can maintain stable sealing state under long-term vibration working condition, and effectively inhibits dust overflow.

Description

Technical Field

[0001] This invention relates to the field of rotary vibrating screen technology, specifically to a double-glass-cover rotary vibrating screen control feeding device. Background Technology

[0002] Existing vibratory screening equipment typically uses a single glass cover or a simple sealed cover in conjunction with a traditional feeding structure to achieve the screening process in fine powder, high-temperature materials and dust-free screening operations. Such structures have many inherent defects in actual use.

[0003] Traditional single-glass dome structures have poor thermal insulation performance. When screening high-temperature materials or in environments with large temperature differences, condensation easily occurs on the inner and outer walls of the dome, affecting the observation of internal working conditions. Furthermore, the sound insulation effect is limited, resulting in significant equipment operating noise. The glass dome and frame are mostly connected using conventional flanges or clips, leading to insufficient sealing reliability. Long-term vibration can cause loosening and dust leakage, resulting in low disassembly and maintenance efficiency. Traditional feeding devices often use gravity feeding or simple screw feeding methods, causing material to easily accumulate on the screen surface, resulting in localized overload, screen blockage, and low screening efficiency. Simultaneously, the lack of effective dust suppression and pre-dispersion structures leads to severe dust generation during feeding, significant fine powder agglomeration, and an inability to achieve uniform material distribution and auxiliary screening.

[0004] To address this, we propose a double-glass-covered rotary vibrating screen feeding control device. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a double-glass-covered rotary vibrating screen control feeding device. By employing an inner and outer double-layered glass cover with a sealed, inflatable interlayer structure, compared to traditional single-layered sealed covers, it achieves simultaneous improvements in heat insulation, noise reduction, and visibility. It effectively blocks heat transfer from high-temperature materials, fundamentally avoiding condensation on the inner wall of the cover. Simultaneously, the gas damping effect within the interlayer significantly reduces the noise generated by vibration and screening, improving the working environment. The double-layered glass cover uses a combination of positioning assembly and sealed plug-in structure, effectively improving assembly accuracy and connection reliability. It maintains a stable sealing state under long-term vibration conditions, effectively suppressing dust leakage. Furthermore, it is easy to disassemble and assemble, reducing maintenance difficulty and downtime.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a double-glass-covered rotary vibrating screen feeding control device, comprising: The vibrating screen base has a screening frame on top supported by springs, and a vibrating motor is fixed at the bottom of the screening frame. A screen is also fixed in the middle of the screening frame, and the screening frame has an oversize discharge port and an undersize discharge port on both sides. The double glass cover assembly is provided on the top of the screening frame. The double glass cover assembly includes a mounting frame, an outer glass cover and an inner glass cover. The bottom of the outer glass cover and the inner glass cover are movably snapped to the top of the mounting frame, and the outer glass cover is located outside the inner glass cover. A feeding rack is fixedly provided in the middle of the outer glass cover and the inner glass cover, and an air layer is formed between the inner side of the outer glass cover, the outer side of the inner glass cover, the top of the mounting frame and the outer peripheral surface of the feeding rack. A feeding hopper is fixedly installed on top of the feeding frame, and a feeding control component is installed inside the feeding frame.

[0007] Preferably, the top of the mounting bracket is provided with annular mounting grooves that mate with the bottom of the outer glass cover and the inner glass cover, and the bottom of the outer glass cover and the inner glass cover are respectively sealed and inserted into the interior of the two annular mounting grooves.

[0008] Preferably, both the outer and inner glass covers are constructed from two metal parts and one glass part, with the two metal parts welded to the top and bottom of the glass part, respectively.

[0009] Preferably, the bottom of the outer and inner glass covers are provided with a number of glass cover positioning holes, and a positioning micro electric cylinder is fixedly provided on one side of the two annular mounting grooves, and the driving end of the positioning micro electric cylinder is movably connected to the inside of the glass cover positioning hole.

[0010] Preferably, the feeding control assembly includes a support frame, a feeding control motor, and a screw feeder. The support frame is fixedly installed at the bottom of the inside of the feeding hopper, and the feeding control motor is fixedly installed at the middle of the top of the support frame. A rotating sleeve is rotatably installed at the bottom of the support frame, and a screw feeder is fixedly installed on the surface of the rotating sleeve.

[0011] Preferably, the inner wall at the bottom of the feeding rack is provided with a plurality of air curtain nozzles, and the plurality of air curtain nozzles are all facing one side of the rotating sleeve. The central axis of the plurality of air curtain nozzles coincides with the central axis of the rotating sleeve. During feeding, the plurality of air curtain nozzles blow out an annular air curtain together to form a downward high-speed airflow wall, forcing the material to fall vertically, suppressing the dust from spreading to the surroundings, and forcibly pressing the fine powder against the screen to assist in screening.

[0012] Preferably, a first air guide ring is fixedly provided on the outer peripheral surface of the feeding rack, and a rotating material distribution rack is rotatably provided on the surface of the first air guide ring; a rotating control motor is fixedly provided on the lower side of one side of the feeding rack, and a drive gear is fixedly provided at the bottom end of the output shaft of the rotating control motor; an internal gear ring is fixedly provided on the top of the rotating material distribution rack, and the outer peripheral surface of the drive gear meshes with the tooth surface of the internal gear ring for transmission; a plurality of material distribution nozzles are fixedly provided on the outer peripheral surface of the bottom of the rotating material distribution rack.

[0013] Preferably, the feeding rack has an air inlet on one side and a guide air channel is provided at the bottom inside the feeding rack. The inside of the air inlet is connected to the inside of the guide air channel, and the inside of the guide air channel is connected to the inside of several air curtain nozzles and distributing nozzles respectively. Each air curtain nozzle and distributing nozzle is equipped with an electromagnetic control valve.

[0014] Preferably, a filter screen is fixedly provided at the bottom of the rotating sleeve; a second air guide ring is fixedly provided at the bottom of the support frame, and the interior of the second air guide ring is rotatably connected to the interior of the rotating sleeve; a dust suction channel is provided inside the support frame, and the inner wall of the dust suction channel is connected to the interior of the second air guide ring and the interior of the rotating sleeve respectively; a dust suction interface is fixedly provided on the outside of the feed hopper, and the interior of the dust suction interface is connected to the interior of the dust suction channel.

[0015] Compared with existing technologies, it has the following advantages: This invention employs a double-layered glass cover with a sealed, inflatable interlayer structure. Compared to traditional single-layered sealed covers, this achieves simultaneous improvements in heat insulation, noise reduction, and visibility. It effectively blocks heat transfer from high-temperature materials, fundamentally preventing condensation on the inner wall of the cover. Simultaneously, the gas damping effect within the interlayer significantly reduces noise generated by vibration and screening, improving the working environment. The double-layered glass cover combines positioning assembly with a sealed plug-in structure, effectively improving assembly accuracy and connection reliability. It maintains a stable, sealed state under long-term vibration conditions, effectively suppressing dust leakage. Furthermore, it is easy to assemble and disassemble, reducing maintenance difficulty and downtime.

[0016] This invention achieves precise control of the feeding process and dust suppression through a quantitative spiral feeding combined with an annular air curtain dust suppression structure. Compared with traditional gravity feeding or single feeding structures, it can stably control the feeding rate, avoid excessive material inflow causing screen blockage and insufficient screening. At the same time, the high-speed airflow wall formed by the air curtain can force the material to fall vertically, prevent dust from spreading upward, and press fine powder onto the screen surface, effectively increasing the probability of fine powder passing through the screen. Combined with a dynamic rotating material distribution structure, the material is evenly spread on the circumferential surface of the screen, eliminating local accumulation, significantly improving screen utilization and screening efficiency, and enhancing the accuracy of material grading.

[0017] In this invention, the spiral feeding frame and the air curtain nozzle work together to force the material to fall vertically to suppress dust overflow, and to press the fine powder against the screen to assist in screening. The dynamic cooperation between the rotating distribution frame and the distribution nozzles makes the material spread evenly on the screen surface, eliminating local accumulation. The negative pressure dust removal structure pre-separates the dust in the material during the feeding stage, reducing dust generation during the screening process. The whole invention achieves precise material control, efficient dispersion, assisted screening and pre-dust removal, significantly improving screening efficiency and the cleanliness of the working environment.

[0018] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description and the drawings. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a double-glass cover rotary vibrating screen control feeding device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the screening box and screen structure according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the dual-glass cover assembly structure according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the outer and inner glass cover structures according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the feeding hopper and feeding frame structure according to an embodiment of the present invention; Figure 6 This is an embodiment of the present invention. Figure 5 Enlarged schematic diagram of the structure at point A; Figure 7 This is a schematic diagram of the feeding rack and screw feeder structure according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the internal structure of the feed hopper and feed rack according to an embodiment of the present invention; Figure 9 This is an embodiment of the present invention. Figure 8 Enlarged schematic diagram of the structure at point B.

[0020] In the diagram, 1. Vibrating screen base; 2. Screening frame; 3. Double glass cover assembly; 4. Feed hopper; 5. Screen; 6. Outer glass cover; 7. Inner glass cover; 8. Mounting frame; 9. Air inlet; 10. Annular mounting groove; 11. Glass cover positioning hole; 12. Positioning micro electric cylinder; 13. Feeding frame; 14. Support frame; 15. Feeding control motor; 16. Rotary material distribution frame; 17. Internal gear ring; 18. Drive gear; 19. Rotary control motor; 20. Spiral feeding frame; 21. Rotating sleeve; 22. Filter screen; 23. Air curtain nozzle; 24. Material distribution nozzle; 25. Air inlet; 26. Airflow channel; 27. First air guide ring; 28. Second air guide ring; 29. ​​Dust suction interface; 30. Dust suction channel. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1

[0023] Please see Figures 1 to 9 As shown, a double-glass-covered rotary vibrating screen feeding control device includes: A vibrating screen base 1 is located on top of the vibrating screen base 1 and a screening frame 2 is provided by a support spring. A vibrating motor is fixedly provided at the bottom of the screening frame 2. A screen 5 is also fixedly provided in the middle of the screening frame 2. The screening frame 2 has an oversize discharge port and an undersize discharge port on both sides respectively.

[0024] The double glass cover assembly 3 is located on the top of the screening frame 2. The double glass cover assembly 3 includes a mounting frame 8, an outer glass cover 6, and an inner glass cover 7. The bottoms of the outer glass cover 6 and the inner glass cover 7 are movably engaged with the top of the mounting frame 8, and the outer glass cover 6 is located outside the inner glass cover 7. A feeding rack 13 is fixedly installed in the middle of the outer glass cover 6 and the inner glass cover 7. An air layer is formed between the inner side of the outer glass cover 6, the outer side of the inner glass cover 7, the top of the mounting frame 8, and the outer peripheral surface of the feeding rack 13. An air inlet 9 is provided on one side inside the mounting frame 8. Inert gas is injected into the air layer through the air inlet 9. When processing high-temperature materials or when the ambient temperature difference is large, the air layer can effectively block heat transfer and prevent condensation from occurring on the outer layer of the inner glass cover 7 due to contact with hot materials and contact with cold air. At the same time, the outer glass cover 6 and the inner glass cover 7, together with the intermediate air damping layer, can significantly attenuate sound wave propagation, reduce equipment operating noise, and improve the working environment.

[0025] The feeding hopper 4 is fixedly installed on the top of the feeding frame 13. The feeding frame 13 is equipped with a feeding control component. The top of the feeding hopper 4 is also equipped with a closed cover. The feeding control component controls the material entering the screening frame 2 to ensure the screening effect of the material inside the screening frame 2 and avoids feeding too much material, which would affect the screening effect.

[0026] It should be noted that the vibrating screen base 1 supports the screening frame 2 via a support spring. The vibrating motor at the bottom of the screening frame 2 provides vibration force. The screen 5 achieves material grading and screening. The mounting frame 8 of the double glass cover assembly 3 positions the outer glass cover 6 and the inner glass cover 7 in layers. The outer glass cover 6, the inner glass cover 7, the mounting frame 8, and the feeding frame 13 together form a sealed air layer. The air inlet 9 in the mounting frame 8 can fill the air layer with inert gas. The feeding hopper 4 at the top of the feeding frame 13, in conjunction with the internal feeding control component, achieves quantitative feeding. This structure utilizes the double-layer glass and inert gas... The air layer effectively blocks heat transfer when screening high-temperature materials or when there are large temperature differences in the environment, preventing condensation on the inner wall of the inner glass cover 7 from affecting observation due to alternating hot and cold temperatures. It also significantly attenuates the propagation of vibration and sound waves generated during screening by utilizing the air damping layer, reducing equipment operating noise. At the same time, the double glass cover structure improves the visibility of the screening process while ensuring airtightness and dust prevention. The feeding control component stably controls the feeding amount, preventing excessive material accumulation that could cause screen 5 to become clogged or insufficient screening. Overall, it achieves simultaneous improvement in heat insulation, noise reduction, dust prevention, and feeding control.

[0027] Example 2

[0028] Specifically, the top of the mounting bracket 8 is provided with annular mounting grooves 10 that mate with the bottom of the outer glass cover 6 and the inner glass cover 7, and the bottoms of the outer glass cover 6 and the inner glass cover 7 are respectively sealed and inserted into the interior of the two annular mounting grooves 10; wherein, the outer glass cover 6 and the inner glass cover 7 are each composed of two metal parts and one glass part, and the two metal parts are welded to the top and bottom of the glass part, respectively; the bottom of the outer circumference of the outer glass cover 6 and the inner glass cover 7 are provided with several glass cover positioning holes 11, and a positioning micro electric cylinder 12 is fixedly installed on one side inside the two annular mounting grooves 10, and the driving end of the positioning micro electric cylinder 12 is... The outer glass cover 6 and inner glass cover 7 are inserted into the internal positioning hole 11 of the glass cover; the bottom of the two annular mounting grooves 10 are provided with sealing gaskets. By inserting the bottom of the outer glass cover 6 and inner glass cover 7 into the two annular mounting grooves 10, and cooperating with the drive ends of several positioning micro electric cylinders 12 to insert into several glass cover positioning holes 11, the assembly between the outer glass cover 6, inner glass cover 7 and mounting frame 8 is completed. After the assembly between the outer glass cover 6, inner glass cover 7 and mounting frame 8, inert gas is injected into the air layer through the air filling hole 9. The air layer filled with inert gas is used to block heat transfer and noise transmission.

[0029] It should be noted that, based on Embodiment 1, this embodiment uses two sets of annular mounting grooves 10 at the top of the mounting bracket 8 to seal and insert into the bottom of the outer glass cover 6 and the inner glass cover 7, respectively. The sealing gasket at the bottom of the annular mounting groove 10 enhances the sealing performance of the contact surface. The glass cover positioning holes 11 on the outer periphery of the bottom of the outer glass cover 6 and the inner glass cover 7 form an insertion positioning with the driving end of the positioning micro electric cylinder 12 in the annular mounting groove 10. Both the outer glass cover 6 and the inner glass cover 7 are formed by welding glass parts with upper and lower metal parts. After assembly, inert gas is filled into the air layer through the air filling hole 9. This structure is... Through the cooperation of the annular mounting groove 10, the positioning miniature electric cylinder 12, and the glass cover positioning hole 11, the outer glass cover 6 and the inner glass cover 7 are quickly positioned and rigidly sealed, replacing the traditional threaded or snap-fit ​​connection. The assembly accuracy is higher and the disassembly and maintenance are more convenient. The metal and glass composite structure improves the overall structural strength and shock resistance of the glass cover. Combined with the inert gas layer formed by inflation, the heat insulation, noise reduction and dust prevention effects are further enhanced. At the same time, it ensures that the double-layer glass cover is stable and does not loosen under vibration conditions, solving the problems of easy condensation, poor sound insulation, unreliable sealing and inconvenient disassembly and assembly of traditional single glass covers.

[0030] Example 3

[0031] Specifically, the feeding control assembly includes a support frame 14, a feeding control motor 15, and a screw feeder 20. The support frame 14 is fixedly installed at the bottom inside the feeding hopper 4, and the feeding control motor 15 is fixedly installed at the middle of the top of the support frame 14. A rotating sleeve 21 is rotatably installed at the bottom of the support frame 14, and the screw feeder 20 is fixedly installed on the surface of the rotating sleeve 21. The outer circumferential surface of the screw feeder 20 slides in contact with the inner surface of the feeding frame 13. By controlling the screw feeder 20 to rotate inside the feeding frame 13, the material inside the feeding hopper 4 is fed into the screening frame 2.

[0032] Furthermore, the inner wall at the bottom of the feed rack 13 is provided with several air curtain nozzles 23, and all of the air curtain nozzles 23 face one side of the rotating sleeve 21. The central axis of the air curtain nozzles 23 coincides with the central axis of the rotating sleeve 21. During feeding, the air curtain nozzles 23 blow out an annular air curtain together to form a downward high-speed airflow wall, forcing the material to fall vertically, suppressing the dust from spreading to the surroundings, and forcibly pressing the fine powder against the screen to assist in screening.

[0033] Furthermore, a first air guide ring 27 is fixedly provided on the outer peripheral surface of the feeding rack 13, and a rotating material distribution rack 16 is rotatably provided on the surface of the first air guide ring 27; a rotating control motor 19 is fixedly provided on the lower side of one side of the feeding rack 13, and a drive gear 18 is fixedly provided at the bottom end of the output shaft of the rotating control motor 19; an internal gear ring 17 is fixedly provided on the top of the rotating material distribution rack 16, and the outer peripheral surface of the drive gear 18 meshes with the tooth surface of the internal gear ring 17 for transmission; a number of material distribution nozzles 24 are fixedly provided on the outer peripheral surface of the bottom of the rotating material distribution rack 16, and the horizontal included angle of each material distribution nozzle 24 ranges from 0° to -90°. During the rotation of the rotating material distribution rack 16, the material falling on the top of the screen 5 is diffused to the surrounding area through the several material distribution nozzles 24, thereby improving the screening efficiency of the screen 5 for the material.

[0034] Furthermore, an air inlet 25 is provided on one side of the feed rack 13, and an air guide channel 26 is also provided at the bottom inside the feed rack 13. The interior of the air inlet 25 is connected to the interior of the air guide channel 26, and the interior of the air guide channel 26 is connected to the interior of several air curtain nozzles 23 and distributing nozzles 24 respectively. Each air curtain nozzle 23 and distributing nozzle 24 is equipped with an electromagnetic control valve.

[0035] Furthermore, a filter screen 22 is fixedly provided at the bottom of the rotating sleeve 21; a second air guide ring 28 is fixedly provided at the bottom of the support frame 14, and the interior of the second air guide ring 28 is rotatably connected to the interior of the rotating sleeve 21; a dust suction channel 30 is provided inside the support frame 14, and the inner wall of the dust suction channel 30 is connected to the interior of the second air guide ring 28 and the rotating sleeve 21 respectively; a dust suction interface 29 is fixedly provided on the outer side of the feed hopper 4, and the interior of the dust suction interface 29 is connected to the interior of the dust suction channel 30.

[0036] It should be noted that the dust inside the rotating sleeve 21 is extracted by the dust suction interface 29 in conjunction with the dust suction channel 30 and the second air guide ring 28, and the material is filtered by the filter screen 22, so that the dust in the material is sent out through the dust suction channel 30, thereby reducing the dust in the material during the screening process of the vibrating screen.

[0037] Specifically, in this embodiment, the feeding control motor 15 is fixed by the support frame 14, driving the rotating sleeve 21 and the screw feeder 20 to rotate, thereby realizing quantitative material conveying. The air curtain nozzle 23 at the bottom of the feeding frame 13 blows an annular air curtain towards the rotating sleeve 21 along the central axis. The rotation control motor 19 drives the rotating distribution frame 16 to rotate through the meshing of the drive gear 18 and the internal gear ring 17. The distribution nozzle 24 at the bottom of the rotating distribution frame 16 spreads the material evenly around the screen 5 as it rotates. The air inlet 25 supplies air to the air curtain nozzle 23 and the distribution nozzle 24 through the air guide channel 26. The electromagnetic control valve inside each nozzle independently regulates the airflow state. The filter screen 22 at the bottom of the rotating sleeve 21 cooperates with the second air guide ring 2. 8. The dust suction channel 30 and the dust suction interface 29 form a negative pressure dust removal channel. This structure, through the cooperation of the spiral feeding frame 20 and the air curtain nozzle 23, forces the material to fall vertically to suppress dust overflow, and presses the fine powder onto the screen 5 to assist in screening. The dynamic cooperation of the rotating material distribution frame 16 and the material distribution nozzle 24 makes the material spread evenly on the surface of the screen 5, eliminating local accumulation. The negative pressure dust removal structure pre-separates the dust in the material during the feeding stage, reducing dust generation during the screening process. The whole structure achieves precise material control, efficient dispersion, auxiliary screening and pre-dust removal in one, significantly improving screening efficiency and the cleanliness of the working environment. At the same time, each airflow channel and transmission structure are synchronized and there are no redundant parts, which is suitable for the continuous and stable operation requirements of the vibrating screen.

[0038] Example 4

[0039] Specifically, this embodiment discloses a method for controlling the feeding device of a double-glass-covered rotary vibrating screen, including the following steps: Step 1: The vibrating screen base 1 supports and positions the screening frame 2 using a support spring. The vibration motor at the bottom of the screening frame 2 is powered on and started, causing the screen 5 to vibrate. The outer glass cover 6 and the inner glass cover 7 are respectively inserted into the corresponding annular mounting grooves 10 of the mounting bracket 8. The positioning micro electric cylinder 12 extends its drive end and inserts into the positioning hole 11 of the glass cover to complete rigid positioning and sealing assembly. Inert gas is injected into the air layer between the outer glass cover 6 and the inner glass cover 7 through the air inlet 9, so that the air layer forms a stable heat insulation and noise reduction damping layer, preventing condensation on the inner glass cover 7 and reducing the operating noise of the equipment.

[0040] Step 2: Put the material to be screened into the feed hopper 4, and keep the closed cover on the top of the feed hopper 4 closed; the external dust collection equipment forms a negative pressure channel through the dust collection interface 29, the dust collection channel 30 and the second air guide ring 28. The airflow passes through the filter screen 22 at the bottom of the rotating sleeve 21, and sucks up and discharges the fine dust mixed in the material, so as to achieve the pre-dust removal treatment of the material before it enters the screening area.

[0041] Step 3: The feeding control motor 15 on the support frame 14 is started, driving the rotating sleeve 21 and the screw feeder 20 to rotate at a uniform speed, and steadily conveying the pre-dust-removed material downward along the feeding frame 13; the external air source enters the air guide channel 26 through the air inlet 25, and the air curtain nozzle 23 at the bottom of the feeding frame 13 simultaneously sprays out an annular air curtain, forming a downward high-speed airflow wall, forcing the material to fall vertically and inhibiting the upward diffusion of dust, while pressing the fine powder against the screen 5 to assist in screening.

[0042] Step 4: The rotary control motor 19 starts and drives the rotary material distribution frame 16 to rotate continuously around the feed frame 13 through the meshing of the drive gear 18 and the internal gear ring 17. At the same time, the air guide channel 26 supplies air to the material distribution nozzle 24. The material distribution nozzle 24 rotates with the rotary material distribution frame 16, spreading the falling material evenly around the screen 5 to avoid local accumulation of material. The screening frame 2 continues to vibrate under the action of the vibrating motor. The screen 5 classifies and screens the evenly spread material. The undersize material passes through the screen 5 and is discharged from the undersize discharge port. The oversize material is discharged from the oversize discharge port along the inner wall of the screening frame 2.

[0043] Step 5: Throughout the screening process, the inert gas air layer continuously blocks the transfer of heat and the propagation of sound waves. The airflow of the air curtain nozzle 23 and the distributing nozzle 24 is independently regulated by the electromagnetic control valve. The screw feeder 20 maintains a constant speed to achieve continuous quantitative feeding. The pre-dust removal structure continuously reduces system dust. The double-layer glass cover maintains sealing and structural stability under vibration conditions, so that the device is in a low-noise and dust-free continuous working state for a long time.

[0044] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A feeding control device for a double-glass-covered rotary vibrating screen, characterized in that, include: A vibrating screen base (1) is located on the top of the vibrating screen base (1) and a screening frame (2) is provided by a support spring. A vibrating motor is fixedly provided at the bottom of the screening frame (2). A screen (5) is also fixedly provided in the middle of the screening frame (2). The screening frame (2) is provided with a discharge port for the material on the screen and a discharge port for the material under the screen on both sides. The double glass cover assembly (3) is provided on the top of the screening frame (2). The double glass cover assembly (3) includes a mounting frame (8), an outer glass cover (6) and an inner glass cover (7). The bottom of the outer glass cover (6) and the inner glass cover (7) are movably connected to the top of the mounting frame (8). The outer glass cover (6) is located outside the inner glass cover (7). The feed rack (13) is fixedly provided in the middle of the outer glass cover (6) and the inner glass cover (7). An air layer is formed between the inner side of the outer glass cover (6), the outer side of the inner glass cover (7), the top of the mounting frame (8) and the outer peripheral surface of the feed rack (13). The feeding hopper (4) is fixedly installed on the top of the feeding rack (13), and the feeding rack (13) is equipped with a feeding control component inside.

2. The feeding control device for a double-glass-covered rotary vibrating screen according to claim 1, characterized in that, The top of the mounting bracket (8) is provided with annular mounting grooves (10) that mate with the bottom of the outer glass cover (6) and the inner glass cover (7), and the bottom of the outer glass cover (6) and the inner glass cover (7) are respectively sealed and inserted into the interior of the two annular mounting grooves (10).

3. The feeding control device for a double-glass-covered vibrating screen according to claim 1, characterized in that, Both the outer glass cover (6) and the inner glass cover (7) are composed of two metal parts and one glass part, with the two metal parts welded to the top and bottom of the glass part, respectively.

4. The feeding control device for a double-glass-covered rotary vibrating screen according to claim 2, characterized in that, The bottom of the outer circumference of the outer glass cover (6) and the inner glass cover (7) are provided with several glass cover positioning holes (11). A positioning micro electric cylinder (12) is fixedly provided on one side inside the two annular mounting grooves (10), and the driving end of the positioning micro electric cylinder (12) is movably inserted into the glass cover positioning hole (11).

5. The feeding control device for a double-glass-covered rotary vibrating screen according to claim 1, characterized in that, The feeding control assembly includes a support frame (14), a feeding control motor (15), and a screw feeder (20). The support frame (14) is fixedly installed at the bottom inside the feeding hopper (4), and the feeding control motor (15) is fixedly installed at the middle of the top of the support frame (14). A rotating sleeve (21) is rotatably installed at the bottom of the support frame (14), and a screw feeder (20) is fixedly installed on the surface of the rotating sleeve (21).

6. The feeding control device for a double-glass-covered vibrating screen according to claim 5, characterized in that, The inner wall at the bottom of the feed rack (13) is provided with several air curtain nozzles (23), and the several air curtain nozzles (23) are all facing one side of the rotating sleeve (21). The central axis of the several air curtain nozzles (23) coincides with the central axis of the rotating sleeve (21). When feeding, the several air curtain nozzles (23) blow out an annular air curtain together to form a downward high-speed airflow wall, forcing the material to fall vertically, suppressing the dust from spreading to the surroundings, and forcibly pressing the fine powder against the screen to assist in screening.

7. The feeding control device for a double-glass-covered vibrating screen according to claim 1, characterized in that, The outer circumferential surface of the feed rack (13) is fixedly provided with a first air guide ring (27), and the surface of the first air guide ring (27) is rotatably provided with a rotating material distribution rack (16); a rotating control motor (19) is fixedly provided below one side of the feed rack (13), and a drive gear (18) is fixedly provided at the bottom of the output shaft of the rotating control motor (19); an internal gear ring (17) is fixedly provided at the top of the rotating material distribution rack (16), and the outer circumferential surface of the drive gear (18) meshes with the tooth surface of the internal gear ring (17) for transmission; a number of material distribution nozzles (24) are fixedly provided on the outer circumferential surface of the bottom of the rotating material distribution rack (16).

8. The feeding control device for a double-glass-covered rotary vibrating screen according to claim 1, characterized in that, The feed rack (13) has an air inlet (25) on one side, and a guide air channel (26) is provided at the bottom inside the feed rack (13). The interior of the air inlet (25) is connected to the interior of the guide air channel (26), and the interior of the guide air channel (26) is connected to the interior of several air curtain nozzles (23) and material distribution nozzles (24). Each air curtain nozzle (23) and material distribution nozzle (24) is equipped with an electromagnetic control valve.

9. The feeding control device for a double-glass-covered rotary vibrating screen according to claim 5, characterized in that, The bottom of the rotating sleeve (21) is fixedly provided with a filter screen (22); the bottom of the support frame (14) is fixedly provided with a second air guide ring (28), and the interior of the second air guide ring (28) is rotatably connected to the interior of the rotating sleeve (21). The interior of the support frame (14) is provided with a dust suction channel (30), and the inner wall of the dust suction channel (30) is connected to the interior of the second air guide ring (28) and the rotating sleeve (21) respectively. The outer side of the feed hopper (4) is fixedly provided with a dust suction interface (29), and the interior of the dust suction interface (29) is connected to the interior of the dust suction channel (30).

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