Vibrating screen capable of adjusting discharge size according to vibration frequency

Abstract

The invention provides a vibrating screen capable of adjusting the discharging size according to the vibration frequency, and relates to the technical field of vibrating screens, the vibrating screen comprises a base, a shell, a screen mesh and a baffle, the shell is located on the upper surface of the base, the baffle and the screen mesh are both located in the shell, and an adjusting structure is arranged in the position, located above the screen mesh, of the shell; the adjusting structure comprises a first sieve plate, the first sieve plate is installed in the shell, a second sieve plate is slidably connected into the first sieve plate, and the second sieve plate is shorter than the first sieve plate. The problems that in the using process of the vibrating screen, a traditional vibrating screen with different hole diameters is replaced for materials with different hole diameters, but the efficiency of the vibrating screen is easily reduced due to the fact that replacement of the vibrating screen is tedious, and the precision of an existing internally-adjusted vibrating screen is difficult to master when the vibrating screen is adjusted; the vibrating screen is not difficult to replace during adjustment, and the precision of the screen holes is difficult to confirm.

Description

Technical Field

[0001] The invention relates to the technical field of vibrating screens, and in particular to a vibrating screen capable of adjusting the size of a discharge material according to a vibration frequency. Background Art

[0002] The vibrating screen is composed of a base, a shell, a screen and a baffle. It is a device used to vibrate and screen materials and is more common in daily life.

[0003] Prior art, such as the invention with publication number CN113477512B, discloses a vibrating screen, which uses at least two unit screens, each unit screen comprising: a screen box having a screen surface extending along a first direction and a second direction, and having opposite feed ends and discharge ends at both ends of the screen surface in the first direction; wherein the screen surface is an inclined surface and the height of the feed end is higher than the height of the discharge end; at least one excitation motor is installed on the screen box along the second direction; wherein at least two unit screens are arranged along the first direction, and in two adjacent unit screens, the discharge end of one unit screen is connected to the feed end of the other unit screen, so that the screen surfaces of the at least two unit screens are in the same on a plane; wherein the vibration intensity of each unit screen is different, and along the first direction and based on the height, the vibration intensity decreases as the height decreases; wherein the first direction is perpendicular to the second direction, which solves the problem that when using the traditional unit equal vibration intensity vibrating screen for material depth screening, the vibration intensity at the feed end and the discharge end is equal, the material at the feed end is prone to accumulation, the material layer thickness increases, looseness and stratification become slower, the screening efficiency decreases, and the screening effect deteriorates; the material layer thickness at the discharge end becomes thinner rapidly due to the high vibration intensity, the material moves too fast, the residence time on the screen surface is short, and it fails to be screened in time, the unit area processing capacity is small, the screen surface utilization rate is low, and the screening effect is poor, which seriously restricts the problem of large-scale quality improvement and efficiency enhancement of my country's coal.

[0004] The inventors found in their daily work that in the process of using vibrating screens, traditional vibrating screens are replaced with vibrating screens of different apertures in order to process materials of different aperture sizes. However, replacing the vibrating screen is rather cumbersome, which may easily reduce the efficiency of the vibrating screen. However, it is difficult to control the accuracy of the existing internally adjusted vibrating screen during adjustment, which may easily lead to the problem that the vibrating screen adjustment is either difficult to replace or difficult to confirm the accuracy of the sieve holes. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a vibrating screen that can adjust the discharge size according to the vibration frequency.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a vibrating screen capable of adjusting the discharge size according to the vibration frequency, comprising a base, an outer shell, a screen and a baffle, the outer shell being located on the upper surface of the base, the baffle and the screen being both located inside the outer shell, an adjusting structure being provided inside the outer shell above the screen, the adjusting structure comprising a first screen plate, the first screen plate being installed inside the outer shell, a second screen plate being slidably connected inside the first screen plate, the second screen plate being shorter than the first screen plate, slide grooves being provided on both sides of the first screen plate and the outer shell at an end away from the baffle, a slide rod being slidably connected to the inner wall of the slide rod, the ends of the two slide rods close to each other being fixedly connected to the second screen plate, a servo cylinder being installed above the outer shell, an output shaft being installed at the output end of the servo cylinder, a connecting plate being fixedly connected to the end of the output shaft away from the servo cylinder, a connecting plate being fixedly connected to the inner wall of the connecting plate The lockhole that is formed on the two ends of the sliding seat is formed on the upper side of the sliding seat, and the sliding seat has two opposite ends. The two ends of the sliding seat are fixedly connected to the two ends of the sliding seat, and the two ends of the sliding seat are fixedly connected to the two ends of the sliding seat.

[0007] Preferably, a round rod is fixedly connected to the interior of the connecting rail, and the round rod is slidably connected to the connecting rod.

[0008] Preferably, a limiting rod is arranged inside the connecting groove, the limiting rod is slidably connected to the second sieve plate, the limiting rod is fixedly connected to the first sieve plate, and the spring is sleeved on the arc surface of the limiting rod.

[0009] Preferably, the screen is made of polymer rubber nylon, and the first screen plate and the second screen plate are made of stainless steel.

[0010] Preferably, the first sieve plate has the same sieve hole as the second sieve plate, and the movable distance between the first sieve plate and the second sieve plate exceeds one sieve hole.

[0011] Preferably, the inner walls on both sides of the shell are provided with a leveling structure, and the leveling structure includes two connecting grooves, and the two connecting grooves are opened on both sides of the shell, and the inner walls on both sides of the shell are fixedly connected to the limiting rails, and the two connecting grooves and the inner walls of the limiting rails are slidably connected with the same long rod, and the arc surface of the long rod is fixedly connected to the scraper, and the scraper is directed downward, and both ends of the long rod are fixedly connected to connecting pipes, and both sides of the shell are fixedly connected to limiting blocks, and the inner wall of the limiting block is opened with a screw, and the end of the shell away from the baffle is fixedly connected to two fixing rods, and a servo motor is installed on the end of the fixing rod away from the shell, and the output end of the servo motor is connected to the screw, and the screw is threadedly connected to the threaded pipe.

[0012] Preferably, the cross-section of the fixing rod is "L"-shaped, and the fixing rod is made of stainless steel.

[0013] Preferably, protective pads are fixedly connected to both sides of the scraper, and the cross-section of the protective pads is rectangular.

[0014] Preferably, an auxiliary structure is provided on the upper surface of the scraper, and the auxiliary structure includes a threaded ring, which is rotatably connected to the scraper, a slide plate is slidably connected to the inner wall of the scraper, a screw rod is slidably connected to the inner wall of the scraper, and the screw rod is threadedly connected to the threaded ring, and positioning rods are fixedly connected at both ends of the slide plate, and the positioning rods are slidably connected to the scraper.

[0015] Preferably, the arc surface of the threaded ring is fixedly connected with an anti-slip sleeve, the cross-section of the anti-slip sleeve is circular, and the anti-slip sleeve is a rubber sleeve.

[0016] Compared with the prior art, the advantages and positive effects of the present invention are:

[0017] 1. In the present invention, by setting an adjustment structure, the problem of replacing a traditional vibrating screen with a vibrating screen of different apertures for materials of different apertures is solved. However, the replacement of the vibrating screen is cumbersome, which may easily reduce the efficiency of the vibrating screen. However, it is difficult to control the accuracy of the existing internally adjusted vibrating screen during adjustment, which may easily lead to the vibrating screen being difficult to replace or difficult to confirm the accuracy of the sieve holes. The present device can facilitate the effect of extremely precise adjustment of the sieve holes.

[0018] 2. In the present invention, by setting a leveling structure, it is possible to avoid excessive accumulation of materials during vibrating and screening, which may easily cause the materials to be vibrated out of the shell and cause the materials to fall and be contaminated. This device can easily spread the materials inside the shell.

[0019] 3. In the present invention, by providing an auxiliary structure, the scraper can be easily adjusted to avoid the scraper being too short to completely flatten the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The present invention provides a schematic diagram of a three-dimensional structure of a vibrating screen capable of adjusting the discharge size according to the vibration frequency;

[0021] Figure 2 The present invention provides a schematic diagram of an adjustment structure of a vibrating screen capable of adjusting the discharge size according to the vibration frequency;

[0022] Figure 3 The present invention proposes a vibrating screen that can adjust the discharge size according to the vibration frequency Figure 2 A magnified image of point A;

[0023] Figure 4 The present invention proposes a vibrating screen that can adjust the discharge size according to the vibration frequency Figure 2 A partial structural diagram of

[0024] Figure 5 The present invention proposes a vibrating screen that can adjust the discharge size according to the vibration frequency Figure 2 A cross-sectional view of the interior portion of

[0025] Figure 6 The present invention proposes a vibrating screen that can adjust the discharge size according to the vibration frequency Figure 5 A schematic diagram of the side structure of

[0026] Figure 7 The present invention proposes a vibrating screen that can adjust the discharge size according to the vibration frequency Figure 4 Schematic diagram of the local structure;

[0027] Figure 8 The present invention provides a schematic diagram of a leveling structure of a vibrating screen capable of adjusting the size of the discharge material according to the vibration frequency;

[0028] Fig. 9 The present invention proposes a vibrating screen that can adjust the discharge size according to the vibration frequency Figure 8 The enlarged view of point B;

[0029] Fig.10 The present invention provides a schematic diagram of an auxiliary structure of a vibrating screen capable of adjusting the discharge size according to the vibration frequency.

[0030] Legend: 1. Base; 2. Shell; 3. Screen; 4. Baffle; 5. Adjustment structure; 501. Servo cylinder; 502. Output shaft; 503. Connecting rail; 504. Connecting rod; 505. Connecting plate; 506. Connecting belt; 507. Connecting shaft; 508. Connecting shaft; 509. Sliding rod; 510. First sieve plate; 511. Second sieve plate; 512. Limiting rod; 513. Spring; 514. Slideway; 5 15. Indicator block; 516. Scale groove; 517. Round rod; 518. Bolt; 519. Notch; 6. Leveling structure; 61. Limit block; 62. Screw; 63. Servo motor; 64. Threaded pipe; 65. Fixing rod; 66. Limit rail; 67. Connecting groove; 68. Scraper; 69. Protective pad; 7. Auxiliary structure; 71. Slide plate; 72. Positioning rod; 73. Screw; 74. Threaded ring; 75. Anti-slip sleeve. DETAILED DESCRIPTION

[0031] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0033] Embodiment 1, as Figure 1-10 As shown, the present invention provides a vibrating screen capable of adjusting the discharge size according to the vibration frequency, comprising a base 1, a shell 2, a screen 3 and a baffle 4, the shell 2 being located on the upper surface of the base 1, the baffle 4 and the screen 3 being located inside the shell 2, an adjusting structure 5 being provided inside the shell 2 above the screen 3, leveling structures 6 being provided on the inner walls on both sides of the shell 2, and an auxiliary structure 7 being provided on the upper surface of the scraper 68.

[0034] The specific settings and functions of the adjustment structure 5, the leveling structure 6 and the auxiliary structure 7 are described in detail below.

[0035] like Figures 2 to 7As shown, the adjustment structure 5 includes a first sieve plate 510, which is installed inside the shell 2, and the second sieve plate 511 is slidably connected inside the first sieve plate 510. The first sieve plate 510 and the second sieve plate 511 can adjust the aperture of the sieve plate. The sliding distance between the first sieve plate 510 and the second sieve plate 511 does not exceed the diameter of a sieve hole. The second sieve plate 511 is shorter than the first sieve plate 510. The first sieve plate 510 and the shell 2 are provided with a slide groove 514 on both sides of the end away from the baffle 4. The inner wall of the slide groove 514 is slidably connected with a slide rod 509. The ends of the two slide rods 509 close to each other are fixedly connected to the second sieve plate 511. A servo cylinder 501 is installed above the shell 2, and an output end of the servo cylinder 501 is installed with an output The output shaft 502 is fixedly connected with a connecting plate 505 at one end away from the servo cylinder 501. The connecting plate 505 is used to connect the output shaft 502 and the connecting rod 504. It is a relatively important connecting component of the whole device. The inner wall of the connecting plate 505 is fixedly connected with the connecting rod 504. The upper end of the housing 2 is fixedly connected with two connecting rails 503. The connecting rails 503 are slidably connected with the connecting rod 504. Both ends of the connecting rod 504 are fixedly connected with connecting shafts 507. The ends of the two sliding rods 509 away from each other are fixedly connected with connecting shafts 508. The arc surfaces of the connecting shafts 507 and the connecting shafts 508 at the same end are fixedly connected with the same connecting belt 506. The first screen plate 510 is threadedly connected with bolts 506 on both sides of the end away from the connecting shaft 508. 18. When the bolt 518 is tightened, it abuts against the second sieve plate 511. The inner wall of the second sieve plate 511 near one end of the connecting shaft 508 is provided with a plurality of notches 519. The notch 519 is located between the two groups of sieve holes of the second sieve plate 511. A spring 513 is arranged inside the notch 519. The two ends of the spring 513 are respectively fixedly connected to the notch 519 and the first sieve plate 510. When the first sieve plate 510 and the second sieve plate 511 are adjusted, the second sieve plate 511 drives the spring 513 to stretch. Then, when the sieve holes need to be restored, the spring 513 contracts and drives the first and second sieve plates to reset. A plurality of scale grooves 516 are provided on the upper surface of the connecting rail 503. The scales on the scale grooves 516 accurately correspond to the scales of the first connecting plate 505 and the second The size of the aperture between the connecting plates 505, the indicator block 515 can conveniently indicate the position of the scale groove 516, a plurality of notches 519 are evenly distributed on the connecting rail 503, the arc surfaces at both ends of the connecting rod 504 are fixedly connected with the indicator blocks 515, the pointer direction of the indicator block 515 points to the scale groove 516, the inside of the connecting rail 503 is fixedly connected with a round rod 517, the round rod 517 is slidably connected to the connecting rod 504, the round rod 517 limits the connecting rod 504, so that the sliding of the connecting rod 504 is more stable, a limit rod 512 is arranged inside the connecting groove 67, the limit rod 512 is slidably connected to the second sieve plate 511, the limit rod 512 is fixedly connected to the first sieve plate 510, and the spring 513 is sleeved on the arc surface of the limit rod 512.The limiting rod 512 can limit the spring 513 to prevent the spring 513 from being deformed during use, thereby increasing the service life of the spring 513. The screen 3 is made of high molecular rubber nylon, the first screen plate 510 and the second screen plate 511 are made of stainless steel, the first screen plate 510 and the second screen plate 511 have the same sieve holes, and the movable distance between the first screen plate 510 and the second screen plate 511 exceeds one sieve hole.

[0036] The effect achieved by the entire adjustment structure 5 is that when it is necessary to adjust the size of the sieve holes between the first sieve plate 510 and the second sieve plate 511, the servo cylinder 501 is started to operate, the servo cylinder 501 drives the output shaft 502 to move, the output shaft 502 drives the connecting plate 505 to move, the connecting plate 505 drives the connecting rod 504 to move, the connecting rod 504 slides on the inner wall of the connecting rail 503, the connecting rod 504 drives the connecting shaft 507 to move, the connecting shaft 507 drives the connecting belt 506 and the connecting shaft 508 to move, the connecting shaft 508 drives the sliding rod 509 to slide on the inner wall of the slide groove 514, the sliding rod 509 drives the second sieve plate 511 to slide on the inner wall of the first sieve plate 510, and then the connecting rod 504 drives the indicating block 515 to move, and when it moves to the appropriate scale groove 516, the servo cylinder 501 is stopped, and then the bolt 518 is screwed to fix it, and then the first sieve plate 510 and the second sieve plate 511 are used.

[0037] like Figure 8 and Fig. 9 As shown, the leveling structure 6 includes two connecting grooves 67, and the two connecting grooves 67 are opened on both sides of the shell 2. The inner walls of the two sides of the shell 2 are fixedly connected to the limit rails 66. The two connecting grooves 67 and the inner walls of the limit rails 66 are slidably connected with the same long rod. The long rod is equivalent to a connecting mechanism, which is used to connect the drive component and the scraper 68. The scraper 68 is a plate used to scrape the material flat. The arc surface of the long rod is fixedly connected to the scraper 68, and the direction of the scraper 68 is downward. Both ends of the long rod are fixedly connected to the connecting pipe, and both sides of the shell 2 are fixedly connected to the limit block 61. The limit block A screw 62 is provided on the inner wall of 61, and two fixing rods 65 are fixedly connected to the end of the shell 2 away from the baffle 4. A servo motor 63 is installed on the end of the fixing rod 65 away from the shell 2, and the output end of the servo motor 63 is connected to the screw 62, and the screw 62 is threadedly connected to the threaded tube 64. The cross-section of the fixing rod 65 is "L" shaped, and the fixing rod 65 is made of stainless steel. Protective pads 69 are fixedly connected on both sides of the scraper 68. The cross-section of the protective pad 69 is rectangular. The protective pad 69 can protect the scraper 68 to prevent excessive wear of the scraper 68 during use.

[0038] The effect achieved by the entire leveling structure 6 is that when the material needs to be leveled, the servo motor 63 is started to operate, the servo motor 63 drives the screw 62 to rotate, the screw 62 rotates on the inner wall of the limit block 61, the screw 62 drives the threaded tube 64 to move, the threaded tube 64 drives the inserted rod to move, the long rod slides on the inner wall of the connecting groove 67 and the limit rail 66, the long rod drives the scraper 68 to move, the scraper 68 pushes the material, and the scraper 68 pushes the material into the outer shell 2 for screening.

[0039] like Figure 1 and Fig.10 As shown, the auxiliary structure 7 includes a threaded ring 74, which is rotatably connected to the scraper 68, a slide plate 71 is slidably connected to the inner wall of the scraper 68, a screw rod 73 is slidably connected to the inner wall of the scraper 68, the screw rod 62 is threadedly connected to the threaded ring 74, both ends of the slide plate 71 are fixedly connected to positioning rods 72, the positioning rod 72 is slidably connected to the scraper 68, and an anti-slip sleeve 75 is fixedly connected to the arc surface of the threaded ring 74. The cross-section of the anti-slip sleeve 75 is a circular ring, and the anti-slip sleeve 75 is a rubber sleeve.

[0040] The effect achieved by the entire auxiliary structure 7 is that when the length of the scraper 68 needs to be adjusted, the threaded ring 74 is rotated to move, the threaded ring 74 drives the screw 62 to move, the screw 62 slides on the inner wall of the scraper 68, the screw 62 drives the slide plate 71 to move downward, the slide plate 71 drives the positioning rod to move, the positioning rod 72 can limit the slide plate 71 when it slides, and then the slide plate 71 is adjusted to extend the length of the scraper 68.

[0041] The overall working principle is that when the size of the sieve holes between the first sieve plate 510 and the second sieve plate 511 needs to be adjusted, the servo cylinder 501 is started to operate, the servo cylinder 501 drives the output shaft 502 to move, the output shaft 502 drives the connecting plate 505 to move, the connecting plate 505 drives the connecting rod 504 to move, the connecting rod 504 slides on the inner wall of the connecting rail 503, the connecting rod 504 drives the connecting shaft 507 to move, the connecting shaft 507 drives the connecting belt 506 and the connecting shaft 508 to move, the connecting shaft 508 drives the sliding rod 509 to slide on the inner wall of the slide groove 514, the sliding rod 509 drives the second sieve plate 511 to slide on the inner wall of the first sieve plate 510, and then the connecting rod 504 drives the indicating block 515 to move, and when it moves to the appropriate scale groove 516, the servo cylinder 501 is stopped, and then the bolt 518 is screwed to fix it, and then the first sieve plate 51 0 and the second screen plate 511 are used. When the material needs to be scraped flat, the servo motor 63 is started to operate. The servo motor 63 drives the screw 62 to rotate. The screw 62 rotates on the inner wall of the limit block 61. The screw 62 drives the threaded tube 64 to move. The threaded tube 64 drives the inserted rod to move. The long rod slides on the inner wall of the connecting groove 67 and the limit rail 66. The long rod drives the scraper 68 to move. The scraper 68 pushes the material. The scraper 68 pushes the material into the outer shell 2 for screening. When the length of the scraper 68 needs to be adjusted, the threaded ring 74 is rotated to move. The threaded ring 74 drives the screw 62 to move. The screw 62 slides on the inner wall of the scraper 68. The screw 62 drives the slide plate 71 to move downward. The slide plate 71 drives the positioning rod to move. The positioning rod 72 can be limited when the slide plate 71 slides, and then the slide plate 71 is adjusted to extend the length of the scraper 68.

[0042] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A vibrating screen capable of adjusting the size of a discharge material according to a vibration frequency, comprising a base (1), a housing (2), a screen (3) and a baffle (4), characterized in that: The housing (2) is located on the upper surface of the base (1); the baffle (4) and the screen (3) are both located inside the housing (2); an adjustment structure (5) is provided inside the housing (2) above the screen (3); the adjustment structure (5) comprises a first screen plate (510); the first screen plate (510) is installed inside the housing (2); a second screen plate (511) is slidably connected inside the first screen plate (510); the second screen plate (511) is shorter than the first screen plate (510); and both sides of the first screen plate (510) and the housing (2) away from the baffle (4) are provided with sliding grooves (514); The inner wall of the slide groove (514) is slidably connected to a slide rod (509), and the ends of the two slide rods (509) close to each other are fixedly connected to the second sieve plate (511). A servo cylinder (501) is installed above the shell (2), and an output shaft (502) is installed at the output end of the servo cylinder (501). The end of the output shaft (502) away from the servo cylinder (501) is fixedly connected to a connecting plate (505), and the inner wall of the connecting plate (505) is fixedly connected to a connecting rod (504). The upper end of the shell (2) is fixedly connected to two connecting rails (503), and the connecting rails (503) are connected to the connecting rails (503). The rod (504) is slidably connected, and both ends of the connecting rod (504) are fixedly connected with a connecting shaft (507), and the ends of the two sliding rods (509) that are away from each other are fixedly connected with a connecting shaft (508), and the arc surface of the connecting shaft (507) and the connecting shaft (508) at the same end is fixedly connected with a same connecting belt (506), and the first sieve plate (510) is threadedly connected with bolts (518) on both sides of the end away from the connecting shaft (508), and the bolts (518) are abutted against the second sieve plate (511) when tightened, and the inner wall of the second sieve plate (511) close to the end of the connecting shaft (508) is provided with a plurality of A plurality of notches (519) are provided, wherein the notches (519) are located between two groups of sieve holes of the second sieve plate (511); a spring (513) is provided inside the notch (519); two ends of the spring (513) are fixedly connected to the notch (519) and the first sieve plate (510), respectively; a plurality of scale grooves (516) are provided on the upper surface of the connecting rail (503); a plurality of notches (519) are evenly distributed on the connecting rail (503); and an indicating block (515) is fixedly connected to the arc surfaces at both ends of the connecting rod (504); and the pointer of the indicating block (515) points to the scale groove (516).

2. A vibrating screen capable of adjusting the discharge size according to the vibration frequency according to claim 1, characterized in that: A round rod (517) is fixedly connected to the interior of the connecting rail (503), and the round rod (517) is slidably connected to the connecting rod (504).

3. A vibrating screen capable of adjusting the discharge size according to the vibration frequency according to claim 1, characterized in that: A limiting rod (512) is disposed inside the connection groove (67); the limiting rod (512) is slidably connected to the second sieve plate (511); the limiting rod (512) is fixedly connected to the first sieve plate (510); and the spring (513) is sleeved on the arc surface of the limiting rod (512).

4. A vibrating screen capable of adjusting the discharge size according to the vibration frequency according to claim 1, characterized in that: The screen (3) is made of polymer rubber nylon, and the first screen plate (510) and the second screen plate (511) are made of stainless steel.

5. The vibrating screen capable of adjusting the discharge size according to the vibration frequency according to claim 1, characterized in that: The first sieve plate (510) and the second sieve plate (511) have the same sieve holes, and the movable distance between the first sieve plate (510) and the second sieve plate (511) exceeds one sieve hole.

6. A vibrating screen capable of adjusting the discharge size according to the vibration frequency according to claim 1, characterized in that: The inner walls on both sides of the shell (2) are provided with a leveling structure (6), the leveling structure (6) comprising two connecting grooves (67), the two connecting grooves (67) being arranged on both sides of the shell (2), the inner walls on both sides of the shell (2) being fixedly connected to the limit rails (66), the two connecting grooves (67) and the inner walls of the limit rails (66) being slidably connected to the same long rod, the arc surface of the long rod being fixedly connected to a scraper (68), the scraper (68) being directed downward, and both ends of the long rod being fixedly connected to the inner walls of the limit rails (66). Both sides of the housing (2) are fixedly connected to a connecting pipe, both sides of the housing (2) are fixedly connected to a limit block (61), the inner wall of the limit block (61) is provided with a screw rod (62), one end of the housing (2) away from the baffle (4) is fixedly connected to two fixing rods (65), one end of the fixing rod (65) away from the housing (2) is installed with a servo motor (63), the output end of the servo motor (63) is connected to the screw rod (62), and the screw rod (62) is threadedly connected to the threaded pipe (64).

7. A vibrating screen capable of adjusting the discharge size according to the vibration frequency according to claim 6, characterized in that: The cross section of the fixing rod (65) is L-shaped, and the fixing rod (65) is made of stainless steel.

8. A vibrating screen capable of adjusting the discharge size according to the vibration frequency according to claim 6, characterized in that: Protection pads (69) are fixedly connected to both sides of the scraper (68), and the cross-section of the protection pads (69) is rectangular.

9. The vibrating screen capable of adjusting the discharge size according to the vibration frequency according to claim 1, characterized in that: An auxiliary structure (7) is provided on the upper surface of the scraper (68), and the auxiliary structure (7) comprises a threaded ring (74), the threaded ring (74) is rotatably connected to the scraper (68), a slide plate (71) is slidably connected to the inner wall of the scraper (68), a screw rod (73) is slidably connected to the inner wall of the scraper (68), the screw rod (62) is threadedly connected to the threaded ring (74), and positioning rods (72) are fixedly connected to both ends of the slide plate (71), and the positioning rods (72) are slidably connected to the scraper (68).

10. A vibrating screen capable of adjusting the discharge size according to the vibration frequency according to claim 9, characterized in that: The arc surface of the threaded ring (74) is fixedly connected to an anti-slip sleeve (75); the cross section of the anti-slip sleeve (75) is in the shape of a circular ring; the anti-slip sleeve (75) is a rubber sleeve.

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