Square swing screen and its superconducting motor drive assembly

Abstract

The present invention relates to the technical field of vibrating screens, and discloses a square rocking screen and a superconducting motor drive assembly thereof, wherein the square rocking screen comprises a support frame and a protective shell, wherein the protective shell is arranged inside the support frame, and an adjustment assembly is provided in the middle of the inner wall of the protective shell, wherein the adjustment assembly comprises two symmetrical adjustment bins, and each of the adjustment bins is slidably connected to two symmetrical first push plates, and a first clamping plate is provided on the left side of the two first push plates located at the upper part; through the mutual cooperation of the first air bin and the second air bin, the distance between the first clamping plate and the second clamping plate can be freely adjusted, and when the position of the second clamping plate is lowered, the movement amplitude of the first screen can be increased by swinging, thereby achieving the vibration amplitude to increase its screening efficiency, and when the first clamping plate rises, the area covered by the first clamping plate can be opened, so that the area of ​​the first screen is increased, thereby increasing the screening amount and avoiding accumulation.

Description

Technical Field

[0001] The invention relates to the technical field of vibrating screens, and in particular to a square swing screen and a superconducting motor drive assembly thereof. Background Art

[0002] The square swing screen is a high-precision screening equipment. Its design imitates the principle of manual screening. Through reciprocating rotary motion and a low-inclined screen surface, the material can pass through the screen surface quickly to achieve high-efficiency screening.

[0003] The intelligently controlled square swing screen with publication number CN118357149B comprises a main body, the top inner wall of the main body is rotatably connected with four connecting rollers, the four connecting rollers are symmetrically arranged in a group of two, and each group of connecting rollers is symmetrically distributed around the center of the main body, the four connecting rollers are rotatably connected with a screening box at one end away from the main body, the interior of the screening box is fixedly connected with an intermediate box, the front outer wall of the main body is fixedly connected with a motor, the outer surface of the output end of the motor is sleeved with a belt 1, the belt 1 penetrates the side wall of the intermediate box and extends to the inside, the extended end of the belt 1 is sleeved with an eccentric wheel, the top and bottom outer walls of the eccentric wheel both penetrate the side wall of the intermediate box and extend to the outside, the left side of the screening box is hinged with a discharge port, and the side of the screening box away from the discharge port is hinged with a feed port.

[0004] A square multi-stage swing screen with publication number CN115400946B comprises a frame, a plurality of hammer beams swingingly connected to the frame, an outer shell arranged inside the frame, and the outer wall of the outer shell is connected to the hammer beam, a discharge door arranged at one end of the outer shell, and an exciting motor arranged at the bottom of the outer shell, characterized in that: a plurality of layers of vibrating nets are installed inside the outer shell, and each of the vibrating nets is equipped with a plurality of cleaning devices capable of automatically cleaning debris and preventing blockage through the swing of the outer shell, and a plurality of impactors are installed on both sides of the cleaning device to strike the surface of the vibrating net A hitting ball; the cleaning device includes a driving device arranged on the vibration net for controlling the movement of the hitting ball, and a self-locking device arranged on the top of the driving device for rotating and self-locking to control the sliding distance of the hitting ball; the driving device includes a plurality of fixed grooves arranged on the vibration net, a plurality of clearance blocks arranged on the top of the fixed grooves, sliding cavities opened on both sides of the clearance blocks, a second movable rod movable in the clearance blocks and arranged in the middle of the sleeve rod, a lifting hammer arranged at the bottom of the second movable rod, and a random swing kit arranged on both sides of each fixed groove to control the swing of the hitting ball.

[0005] Based on the above scheme, square rocking screens mostly use motors to drive belts to rotate the eccentric block to generate vibration, and improve screening efficiency through vibration. However, in actual use, materials are continuously added, causing the material on the surface of the rocking screen to gradually increase. At this time, the gravity of the rocking screen is relatively large, and the vibration amplitude will gradually decrease, making it impossible to vibrate the material on the surface of the rocking screen, thereby affecting the screening efficiency. At the same time, materials are piled up together. If the screening efficiency is not improved in time according to the situation, too much material will be discharged from the discharge port before it is thoroughly screened, thereby affecting the final discharge volume. Summary of the invention

[0006] The object of the present invention is to provide a square swing screen and a superconducting motor drive assembly thereof to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a square swing screen, comprising a support frame and a protective shell, wherein the protective shell is arranged inside the support frame, and an adjustment component is arranged in the middle of the inner wall of the protective shell;

[0008] The adjustment assembly includes two symmetrical adjustment bins, each of which is slidably connected to two symmetrical first push plates, the left side of the two first push plates located at the upper part is provided with a first clamping plate, and the upper surface of the first clamping plate is inclined, the left side of the two first push plates located at the lower part is provided with a second clamping plate, and the side of the first clamping plate and the second clamping plate close to each other is provided with a magnet, and the magnetic properties of the two magnets are opposite;

[0009] A first screen arranged obliquely is slidably connected between the outer surfaces of the two adjustment bins, and the first screen is located between the first clamping plate and the second clamping plate. The upper surface of the first screen is in an inverted V shape. A slide is provided between the two adjustment bins, a baffle is slidably connected inside the slide, and a distance sensor is provided on the right side wall of the slide.

[0010] Through the cooperation between the slide and the baffle, when too much material accumulates on the surface of the first screen, the baffle can be gradually moved to the right to increase the distance between the baffle and the first screen, thereby increasing the discharge volume and avoiding blockage caused by excessive material accumulation; through the cooperation between the first clamping plate and the second clamping plate, the movement amplitude of the first screen can be increased, so that it vibrates more violently and the material can be screened quickly; through the cooperation between the first push plate and the magnet, the position of the first clamping plate can be adjusted to reopen the area of ​​the first screen covered by it, so that the area of ​​the first screen is increased, thereby achieving the efficiency of screening materials.

[0011] Preferably, the second clamping plate includes a frame, the cross-section of the frame is N-shaped, a rotating shaft is hinged between the inner side walls of the frame, a vibration plate is provided on the outer surface of the rotating shaft, and the upper surface of the vibration plate is an inclined surface, and torsion springs are sleeved on both ends of the rotating shaft, one end of each torsion spring is fixedly connected to the vibration plate, and the other end of each torsion spring is fixedly connected to the frame.

[0012] Preferably, the inner wall of each adjustment bin is provided with a first air bin, and the interior of each first air bin is slidably connected to two symmetrical second push plates, and the side surfaces of the two second push plates away from each other are fixedly connected to two symmetrical first positioning columns, and the other end of each first positioning column is fixedly connected to the first push plate close to it.

[0013] Preferably, the two adjustment bins are fixedly connected to a second air bin on one side close to each other, each of the second air bins is slidably connected to a rubber plate inside, the left side of each rubber plate is fixedly connected to two symmetrical second positioning columns, and the left end of each second positioning column is fixedly connected to the baffle, the back of the second air bin is connected to an air supply pipe, and the other end of the air supply pipe is connected to the middle of the front side of the first air bin.

[0014] Preferably, a feed plate and a second screen are respectively provided at the lower part of the inner wall of the protective shell, and the feed plate and the second screen are both inclined. The feed plate and the second screen are both located directly below the first screen, and the aperture of the second screen is smaller than the aperture of the first screen.

[0015] Preferably, a feed hopper is provided on the left portion of the upper surface of the protective shell, and the right side of the protective shell is respectively connected to a first row of hoppers, a second row of hoppers and a third row of hoppers, and the size of the first row of hoppers is respectively larger than the size of the second row of hoppers and the third row of hoppers.

[0016] Preferably, two symmetrical connecting seats are provided on the front and back of the protective shell, and four rectangularly distributed positioning pins are inserted into the upper surface of the support frame. The lower end of each positioning pin is fixedly connected to a spring, and the other end of each spring is fixedly connected to the upper surface of the connecting seat.

[0017] The present invention also provides a superconducting motor driving assembly for a square rocking screen, comprising a superconducting motor and an exciter, wherein the superconducting motor and the exciter are both arranged on the left part of the bottom wall of the protective shell, and the output end of the superconducting motor is fixedly connected to the input end of the exciter.

[0018] Technical effects of the present invention:

[0019] 1. The present invention adopts superconducting motor and excitation as vibration source, does not need belt transmission, eliminates the risk of downtime caused by belt breakage, does not install motor on the side, the center of gravity and centroid of the protective shell coincide, and the motion trajectory of each point of the protective shell remains consistent, thereby avoiding the problem of material deviation caused by inconsistent trajectories on both sides of the screen box.

[0020] 2. The present invention cooperates with the slide and the baffle. When too much material is accumulated on the surface of the first screen, the baffle can be gradually moved to the right to increase the distance between the baffle and the first screen, thereby increasing the discharge volume and avoiding blockage caused by excessive material accumulation.

[0021] 3. Under the action of the distance sensor, the present invention can detect the distance between the baffle and the distance sensor in real time. The smaller the distance, the more materials accumulated at the baffle and the lower the screening efficiency. It is necessary to make corresponding adjustments to make the screening force at this time adapt to the working state at this time.

[0022] 4. The present invention can freely adjust the distance between the first clamping plate and the second clamping plate through the mutual cooperation of the first air bin and the second air bin. When the position of the second clamping plate is lowered, the movement amplitude of the first screen can be increased by swinging, thereby achieving the vibration amplitude to increase its screening efficiency. When the first clamping plate rises, the area covered by the first clamping plate can be opened to increase the area of ​​the first screen, thereby increasing the screening amount and avoiding accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a cross-sectional schematic diagram of a left view of the support frame of the present invention;

[0025] Figure 3 It is a cross-sectional schematic diagram of the front view of the support frame of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of the first gas storage of the present invention;

[0027] Figure 5 It is a cross-sectional schematic diagram of the second gas compartment of the present invention;

[0028] Figure 6 It is a cross-sectional schematic diagram of the first gas compartment of the present invention;

[0029] Figure 7 This is a schematic diagram of the first screen structure of the present invention;

[0030] Figure 8 It is a schematic diagram of the framework structure of the present invention.

[0031] In the figure: 1. support frame; 2. protective shell; 3. adjustment component; 301. adjustment bin; 302. first push plate; 303. first clamping plate; 304. baffle; 305. magnet; 306. first screen; 307. slideway; 308. first air bin; 309. second push plate; 310. first positioning column; 311. second air bin; 312. rubber plate; 313. second positioning column; 314. air supply pipe; 4. second clamping plate; 401. frame; 402. rotating shaft; 403. vibration plate; 404. torsion spring; 5. feeding plate; 6. second screen; 7. feed hopper; 8. first row of hoppers; 9. second row of hoppers; 10. third row of hoppers; 11. connecting seat; 12. positioning pin; 13. spring; 14. superconducting motor. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Example

[0033] The present invention provides Figures 1 to 8 A square swing screen is shown, comprising a support frame 1 and a protective shell 2, wherein the support frame 1 and the protective shell 2 are elastically connected by a spring 13, and the protective shell 2 can be vibrated by vibrating the protective shell 2, so that material screening is more convenient, and an elastic connection is adopted to prevent the support frame 1 from falling off and loosening under long-term vibration. The protective shell 2 is arranged inside the support frame 1, and an adjustment component 3 is arranged in the middle of the inner wall of the protective shell 2. The adjustment component 3 can adjust the positions of the first clamping plate 303 and the second clamping plate 4 according to actual conditions. When the position of the second clamping plate 4 is changed, When the first screen 306 moves upward due to vibration, the potential energy disappears, and under the action of gravity, the second clamping plate 4 is driven to move downward, which can make the vibration plate 403 swing downward to store energy. When the downward force disappears, when the vibration force makes the first screen 306 rise again, the vibration plate 403 can also quickly reset, and apply a certain impact force to the first screen 306, so that the movement distance of the first screen 306 increases again, and the movement amplitude of the material on the surface of the first screen 306 increases, so that the screening efficiency is increased, and the materials piled together are too heavy to be thrown away for screening.

[0034] The adjustment assembly 3 includes two symmetrical adjustment bins 301, each of which is slidably connected to two symmetrical first push plates 302. When the first push plate 302 moves, it can drive the first clamping plate 303 and the second clamping plate 4 to move, and the first clamping plate 303 and the second clamping plate 4 fix the first screen 306 together, so that the three can move synchronously to avoid falling off during vibration. The left sides of the two first push plates 302 at the top are each provided with a first clamping plate 303, and the upper surface of the first clamping plate 303 is inclined. When the material slides onto the first clamping plate 303 When the material on the surface of the first clamping plate 303 is moved by the interaction of the inclined surface and the vibration, the material on the surface of the first clamping plate 303 can be effectively made to slide down to avoid accumulation. A second clamping plate 4 is provided on the left side of the two first push plates 302 at the bottom. A magnet 305 is provided on the side where the first clamping plate 303 and the second clamping plate 4 are close to each other, and the two magnets 305 have opposite magnetic properties. Under the action of the magnetic attraction of the magnet 305, the first clamping plate 303 and the second clamping plate 4 can be made close to each other, thereby fixing the first clamping plate 303, the second clamping plate 4 and the first screen 306 together to avoid falling off.

[0035] The second clamping plate 4 includes a frame 401, the cross section of the frame 401 is n-shaped, which can make the vibration plate 403 move freely in the groove to avoid collision. The inner wall of the frame 401 is hinged with a rotating shaft 402, and the rotating shaft 402 can drive the vibration plate 403 to swing, so that it can be adjusted to a suitable angle according to actual needs, making it more convenient to discharge materials. The outer surface of the rotating shaft 402 is provided with a vibration plate 403, and the upper surface of the vibration plate 403 is an inclined surface. Under the interaction of the inclined surface and the vibration, the material on the surface of the first clamping plate 303 can be effectively made to slide off to avoid pile-up. In the case of accumulation, both ends of the rotating shaft 402 are sleeved with torsion springs 404, one end of each torsion spring 404 is fixedly connected to the vibration plate 403, and the other end of each torsion spring 404 is fixedly connected to the frame 401. When the vibration plate 403 is swung downward by an external force, the torsion spring 404 can be deformed to generate a restoring elastic force, and when the force disappears, the vibration plate 403 can be quickly reset, pushing the first screen 306 above to move upward quickly, thereby increasing its movement amplitude, making the material attached to the surface of the first screen 306 vibrate with a larger amplitude, avoiding material accumulation, thereby improving the screening efficiency.

[0036] The first screen 306 is slidably connected between the outer surfaces of the two adjustment bins 301. The slanted first screen 306 can make the material slide to the right continuously to avoid accumulation and blockage. The first screen 306 is between the first clamping plate 303 and the second clamping plate 4. The upper surface of the first screen 306 is inverted V shape, which can make the material slide to both sides to avoid excessive material accumulation in the middle and affecting the overall screening effect. A slide 307 is provided between the two adjustment bins 301. The slide 307 is slidably connected with a baffle 304 inside. The baffle 304 can block the accumulated materials to avoid the materials passing through all at once and affecting the screening quality. A distance sensor is provided on the right side wall of the slide 307. The distance sensor can detect the distance between the baffle 304 and the distance sensor in real time. The smaller the distance, the more materials are accumulated at the baffle 304 and the lower the screening efficiency. It needs to be adjusted accordingly so that the screening force at this time is adapted to the working state at this time.

[0037] Through the cooperation between the slide 307 and the baffle 304, when too much material is accumulated on the surface of the first screen 306, the baffle 304 can be gradually moved to the right to increase the distance between the baffle 304 and the first screen 306, thereby increasing the discharge volume and avoiding blockage caused by excessive material accumulation. Through the cooperation between the first clamping plate 303 and the second clamping plate 4, the movement amplitude of the first screen 306 can be increased, so that it vibrates more violently and the material can be screened quickly. Through the cooperation between the first push plate 302 and the magnet 305, the position of the first clamping plate 303 can be adjusted to reopen the area of ​​the first screen 306 covered by it, so that the area of ​​the first screen 306 is increased, thereby achieving the efficiency of screening materials.

[0038] The inner wall of each adjustment bin 301 is provided with a first gas bin 308, and the first gas bin 308 is filled with gas. When the gas increases, it can push the two second push plates 309 to move. The interior of each first gas bin 308 is slidably connected with two symmetrical second push plates 309, and the two second push plates 309 are fixedly connected with two symmetrical first positioning columns 310 on the side away from each other, and the other end of each first positioning column 310 is fixedly connected to the first push plate 302 close to it. The first positioning column 310 can move with the second push plate 309, and the first positioning column 310 and the first push plate 302 are fixedly connected, so that the position of the first push plate 302 can be freely adjusted, so that the positions of the first clamping plate 303 and the second clamping plate 4 change, thereby increasing the movement amplitude of the first screen 306, making it vibrate more violently, so that the material can be screened quickly.

[0039] The side surfaces of the two adjustment bins 301 close to each other are fixedly connected with the second gas bins 311, and the interior of each second gas bin 311 is slidably connected with a rubber plate 312, and the left side of each rubber plate 312 is fixedly connected with two symmetrical second positioning posts 313, and the left end of each second positioning post 313 is fixedly connected to the baffle 304. When materials are piled up on the left side of the baffle 304, it gradually moves to the right under the action of gravity, and the rubber plate 312 gradually moves to the right under the push of the second positioning posts 313, exerting pressure on the gas inside the second gas storage bin, and the second gas bin 311 The back side is connected to an air supply pipe 314, and the other end of the air supply pipe 314 is connected to the middle of the front side of the first air bin 308. Under the action of the air supply pipe, the gas squeezed inside the second air bin 311 can be pushed into the first air bin 308, so that the gas inside the first air bin 308 gradually increases, so that the positions of the first clamping plate 303 and the second clamping plate 4 can be freely adjusted. Since the first clamping plate 303 is located at the top, under the action of gravity, the position of the second clamping plate 4 will be adjusted first. When the adjustment is completed, the second clamping plate 4 is adjusted again, so as to achieve the purpose of batch adjustment.

[0040] A feeding plate 5 and a second screen 6 are respectively provided at the lower part of the inner wall of the protective shell 2. The feeding plate 5 and the second screen 6 are both inclined. The feeding plate 5 can send the thoroughly screened material to the appropriate position. The second screen 6 is a fine screen, which can further screen the material to make the material screening more refined. The feeding plate 5 and the second screen 6 are both located directly below the first screen 306, and the aperture of the second screen 6 is smaller than that of the first screen 306 to avoid omissions during the screening process. A feeding hopper 7 is provided at the left part of the upper surface of the protective shell 2, and the right side of the protective shell 2 is respectively connected to the first row of hoppers 8, the second row of hoppers 9 and the third row of hoppers 10. The size of the first row of hoppers 8 is larger than that of the second row of hoppers 9 and the third row of hoppers 10, and the size of the first row of hoppers 8 is the largest to prevent the first row of hoppers from leaking. When the screen 306 is shaken, the first screen 306 and the first row hopper 8 are misaligned, causing material spillage. Two symmetrical connecting seats 11 are provided on the front and back of the protective shell 2. Four rectangularly distributed positioning pins 12 are inserted on the upper surface of the support frame 1. The lower end of each positioning pin 12 is fixedly connected to a spring 13, and the other end of each spring 13 is fixedly connected to the upper surface of the connecting seat 11. The support frame 1 and the protective shell 2 are elastically connected by the spring 13. The protective shell 2 can be vibrated by vibrating the protective shell 2, which makes material screening more convenient. At the same time, an elastic connection is adopted to prevent the support frame 1 from falling off and loosening under long-term vibration. At the same time, due to the presence of the spring 13, the vibration can be amplified to increase the screening efficiency.

[0041] The present invention also provides a superconducting motor driving assembly for a square swing screen, including a superconducting motor 14 and an exciter. The superconducting motor 14 and the exciter are both arranged on the left part of the inner bottom wall of the protective shell 2. The output end of the superconducting motor 14 and the input end of the exciter are fixedly connected. The superconducting motor 14 is installed at the center of gravity of the protective shell 2. A high-temperature superconductor is installed on the rotor of the superconducting motor 14. When the stator winding is energized to generate an alternating magnetic field, the high-temperature superconductor of the rotor generates eddy currents and then generates a strong magnetic field to drive the rotor to rotate. Since the resistivity of the high-temperature superconductor is extremely low and close to zero, the electromagnetic conversion efficiency is greatly improved and the heat generation of the winding is reduced. Under the same power, the high-temperature superconducting motor is more energy-efficient.

[0042] When in use, first start the superconducting motor 14 and the vibrator to make the protective shell 2 shake as a whole, and then continue to feed materials into the feed hopper 7. Under the action of gravity, the materials will accumulate on the surface of the first screen 306. The shaking of the first screen 306 can enable part of the materials to pass through the first screen 306, and then pass through the second screen 6 in turn to be collected on the feeding plate 5 below. Under the action of the inclined surface, materials with different screening degrees can be discharged in turn through the first row hopper 8, the second row hopper 9 and the third row hopper 10, thereby achieving the purpose of material separation.

[0043] When the distance sensor detection value reaches the first threshold, a certain amount of material is accumulated at the baffle 304, and the power of the superconducting motor 14 is turned to the maximum to increase the vibration amplitude. When the protective shell 2 shakes, the first screen 306 follows the protective shell 2 and increases the shaking amplitude, thereby increasing the vibration amplitude of the material accumulated on the surface of the first screen 306, avoiding the situation of inadequate screening.

[0044] When the distance sensor detects a value that reaches a second threshold, the amount of material accumulated at the baffle plate 304 increases. Under the action of the material's gravity, the baffle plate 304 pushes the second positioning column 313 to drive the rubber plate 312 to gradually move to the right, compressing the gas inside the second gas bin 311 so that the gas can enter the first gas bin 308 along the gas delivery pipe 314, causing the gas inside the first gas bin 308 to gradually increase. Since the first push plate 302 and the second push plate 309 are located at the top and have a certain gravity, when the gas inside the first gas bin 308 increases, the second push plate 309 located at the bottom will move downward first. Under the action of the first positioning column 310, the first push plate 302 drives the second clamping plate 4 to gradually move downward, causing the distance between the magnet 305 of the first clamping plate 303 and the magnet 305 of the second clamping plate 4 to increase. The distance between them gradually increases until the magnetic attraction between them is disconnected, thereby releasing the constraint on the vibration plate 403. Under the gravity of the vibration plate 403 itself, the vibration plate 403 swings downward. When the first screen 306 and the vibration plate 403 move upward through vibration, the potential energy disappears. Under the action of gravity, the second clamping plate 4 moves downward, which can make the vibration plate 403 swing downward, so that the torsion spring 404 is deformed by force and stores energy. When the downward force disappears, when the vibration force makes the first screen 306 rise again, the vibration plate 403 can also be quickly reset, and a certain impulse is applied to the first screen 306, so that the movement distance of the first screen 306 increases again, so that the movement amplitude of the material on the surface of the first screen 306 increases, so that the screening efficiency is increased, and it is avoided that the materials piled together are too heavy to be thrown and screened.

[0045] When the distance sensor detection value reaches the third threshold value, the accumulated material at the baffle 304 increases again. Under the action of the gravity of the material, the baffle 304 pushes the second positioning column 313 to drive the rubber plate 312 to gradually move to the far right, and the gas inside the second gas bin 311 completely enters the first gas bin 308 through the air supply pipe 314. Under the action of air pressure, the lower second push plate 309 is first moved to the maximum extent, and then the upper second push plate 309 is gradually moved upward. Under the action of the first positioning column 310, the upper first push plate 302 is pushed upward, thereby driving the first clamping plate 303 to gradually move upward, so that a gap appears between the first clamping plate 303 and the first screen 306. Since the upper surface of the first screen 306 is in an inverted V shape, the subsequent material can be gradually spread to both sides under the action of the inclined surface, and the screening efficiency is further improved by increasing the area of ​​the first screen 306, thereby avoiding the occurrence of material piling.

[0046] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A square rocking screen, comprising a support frame (1) and a protective shell (2), characterized in that: The protective shell (2) is arranged inside the support frame (1), and an adjustment component (3) is provided in the middle of the inner wall of the protective shell (2); The adjustment assembly (3) comprises two symmetrical adjustment chambers (301), each of the adjustment chambers (301) is slidably connected with two symmetrical first push plates (302), the left side of the two first push plates (302) located at the upper part is provided with a first clamping plate (303), and the upper surface of the first clamping plate (303) is inclined, the left side of the two first push plates (302) located at the lower part is provided with a second clamping plate (4), and the side surfaces of the first clamping plate (303) and the second clamping plate (4) close to each other are provided with magnets (305), and the magnetic properties of the two magnets (305) are opposite; A first screen (306) arranged in an inclined manner is slidably connected between the outer surfaces of the two adjustment bins (301), and the first screen (306) is located between the first clamping plate (303) and the second clamping plate (4). The upper surface of the first screen (306) is in an inverted V shape. A slideway (307) is provided between the two adjustment bins (301). A baffle (304) is slidably connected inside the slideway (307). The baffle (304) can block the materials piled up together. When too much material is piled up on the surface of the first screen (306), the baffle (304) can gradually move to the right, thereby increasing the distance between the baffle (304) and the first screen (306), thereby increasing the discharge amount. A distance sensor is provided on the right side wall of the slideway (307); The second clamping plate (4) comprises a frame (401), the cross section of the frame (401) is n-shaped, a rotating shaft (402) is hinged between the inner side walls of the frame (401), a vibration plate (403) is provided on the outer surface of the rotating shaft (402), and the upper surface of the vibration plate (403) is inclined, and torsion springs (404) are sleeved at both ends of the rotating shaft (402), one end of each torsion spring (404) is fixedly connected to the vibration plate (403), and the other end of each torsion spring (404) is fixedly connected to the frame (401); The inner wall of each adjustment bin (301) is provided with a first gas bin (308), the interior of each first gas bin (308) is slidably connected to two symmetrical second push plates (309), the side surfaces of the two second push plates (309) that are away from each other are fixedly connected to two symmetrical first positioning columns (310), and the other end of each first positioning column (310) is fixedly connected to the first push plate (302) that is close to it; The side surfaces of the two adjustment chambers (301) close to each other are fixedly connected to a second air chamber (311), the interior of each second air chamber (311) is slidably connected to a rubber plate (312), the left side surface of each rubber plate (312) is fixedly connected to two symmetrical second positioning columns (313), and the left end of each second positioning column (313) is fixedly connected to the baffle (304), the back side of the second air chamber (311) is connected to an air supply pipe (314), and the other end of the air supply pipe (314) is connected to the middle part of the front side of the first air chamber (308).

2. The square swing screen according to claim 1, characterized in that: A feeding plate (5) and a second screen (6) are respectively provided at the lower part of the inner wall of the protective shell (2); the feeding plate (5) and the second screen (6) are both arranged in an inclined manner; the feeding plate (5) and the second screen (6) are both located directly below the first screen (306); and the aperture of the second screen (6) is smaller than the aperture of the first screen (306).

3. The square swing screen according to claim 2, characterized in that: A feed hopper (7) is provided on the left portion of the upper surface of the protective shell (2), and a first row of hoppers (8), a second row of hoppers (9) and a third row of hoppers (10) are respectively connected to the right side of the protective shell (2), and the size of the first row of hoppers (8) is respectively larger than the size of the second row of hoppers (9) and the third row of hoppers (10).

4. The square swing screen according to claim 3, characterized in that: The front and back sides of the protective shell (2) are each provided with two symmetrical connecting seats (11); the upper surface of the support frame (1) is plugged with four rectangularly distributed positioning pins (12); the lower end of each positioning pin (12) is fixedly connected to a spring (13); and the other end of each spring (13) is fixedly connected to the upper surface of the connecting seat (11).

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