A percussion type standard vibrating screen machine with anti-blocking self-cleaning function

Abstract

The present application relates to the field of screening equipment, especially to a percussion standard vibrating screen with anti-blocking and self-cleaning function, comprising a base, a vibrating seat is rotatably connected to the top of the base, a vibrating screen mechanism is arranged on the vibrating seat, the vibrating screen mechanism is composed of several vibrating screen assemblies, each vibrating screen assembly comprises a shell, several shells are fixed on the vibrating seat through mounting assemblies, several filter screens are rotatably connected in the shell, and an annular inclined plate is fixedly connected to the outer ring wall of each filter screen. By arranging the filter screen, the annular baffle and the collecting box, after the screening is completed, the machine does not need to be stopped, the cover does not need to be opened, and the remaining materials on each layer of screen can be automatically and classifiedly discharged into the corresponding collecting box by using the rotation centrifugal force of the filter screen, so that the whole process is automatically completed, the labor intensity of the operator is reduced, and the material leakage, cross contamination and data recording error caused by manual operation are avoided.

Description

Technical Field

[0001] This invention relates to the field of screening equipment, and more particularly to a vibratory standard vibrating screen with anti-clogging and self-cleaning functions. Background Technology

[0002] A vibrating screen is a mechanical device used in conjunction with a test sieve for particle size analysis of materials, replacing manual sieving. Existing standard impact vibrating screens typically use an electric motor to drive an eccentric block to rotate, generating centrifugal force. This force is transmitted to the screen box via springs, causing the screen box to vibrate at high frequency, thereby separating the material according to particle size. Based on the sieving principle, under the action of vibration, the material gradually stratifies according to particle size, with larger particles moving upwards and smaller particles moving downwards, ultimately achieving the sieving purpose.

[0003] For example, the invention patent with application number CN202411815249.8 discloses a superconducting motor driven circular vibrating screen and its usage method. The superconducting motor driven circular vibrating screen includes a support base and a protective shell. The protective shell is equipped with a stirring component and a displacement component, and the displacement component is located below the stirring component.

[0004] The above cases still have the following shortcomings: For example, after screening, the material remaining on the screen of an existing vibrating screen usually needs to be removed by opening the casing or disassembling the screen. This process not only increases the labor intensity of the operators, but also easily causes material to scatter and pollute the environment. It can also easily cause data errors and affect screening efficiency.

[0005] To address these issues, this invention proposes a standard vibrating screen with anti-clogging and self-cleaning functions to solve the aforementioned problems. Summary of the Invention

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a standard vibrating screen machine with anti-clogging and self-cleaning function, comprising a base, a vibrating seat rotatably connected to the top of the base, a vibrating screen mechanism disposed on the vibrating seat, the vibrating screen mechanism being composed of several vibrating screen components, the vibrating screen components including: A housing, several of which are fixed to a vibrating seat by a mounting assembly, and several filter screens are rotatably connected inside the housing, with an annular inclined plate fixedly connected to the outer ring wall of the filter screen; A rotary drive mechanism for driving the filter screen to rotate; An annular baffle is slidably connected inside the housing at a position corresponding to the outer ring of the filter screen. An arc-shaped sealing cap, the end of which passes through an annular baffle and is fixedly connected to the shell; The notch is located on both sides of the housing with symmetrical arc-shaped sealing caps. A collection box is slidably connected to the outer wall of the housing at the position corresponding to the notch. The pushing mechanism drives the annular baffle to move upward during the start of the rotary drive mechanism, so that the material inside the shell enters the collection box through the notch.

[0007] Preferably, the vibrating screen assembly further includes: An air intake pipe is fixedly connected to the housing at a position corresponding to the lower part of the arc-shaped sealing cover. Several jet nozzles are fixedly connected to the top of the air intake pipe in a linear array for blowing air onto the bottom surface of the filter screen to clear blockages.

[0008] Preferably, the vibrating screen assembly further includes: A sealing plate, which is slidably connected inside an arc-shaped sealing cover; A pushing component drives a sealing plate to move downward as the annular baffle moves upward, thereby sealing the end of the arc-shaped sealing cap.

[0009] Preferably, the vibrating screen assembly further includes: An exhaust pipe is provided, with its bottom end fixedly connected to an arc-shaped sealing cap, its top end penetrating the outer wall of the housing, and a dustproof net fixedly connected to its bottom end.

[0010] Preferably, the actuating mechanism includes: An annular air chamber is formed inside the housing at a position corresponding to the annular inclined plate, and the annular inclined plate and the annular air chamber are connected by a sealing ring; Several sliding grooves are arranged in a circular array within an annular inclined plate. Sliding seats are slidably connected within each sliding groove, and a first spring is fixedly connected between the sliding seats. A compression shell is fixedly connected in a sliding groove. The compression shell is connected to an annular air chamber via an air passage. A piston is sealed and slidably mounted inside the compression shell. A connecting rod is fixedly connected to the side wall of the piston. The connecting rod is fixedly connected to a sliding seat. Several L-shaped sliding plates are arranged in a ring and are slidably connected to the inner wall of the housing. The bottom end of each L-shaped sliding plate extends into the annular air cavity, and the top end of each L-shaped sliding plate is fixedly connected to an annular baffle.

[0011] Preferably, the rotary drive mechanism includes: A drive motor is fixedly connected to the outer wall of the housing, and a drive gear is fixedly connected to the end of the output shaft of the drive motor. The drive gear is rotatably connected inside the housing. An annular rack plate is fixedly connected to the bottom surface of an annular inclined plate, and the annular rack plate meshes with a drive gear.

[0012] Preferably, the actuating component includes: A bracket is fixedly connected to the top of an arc-shaped sealing cover, and a first gear is rotatably connected to the bracket. The first rack is fixedly connected to the side wall of the annular baffle, and the first rack meshes with the first gear; The second rack is fixedly connected to the sealing plate and meshes with the first gear.

[0013] Preferred options also include: Two flip plates are symmetrically rotated and connected to both sides of the intake pipe; Two second gears are fixed coaxially to two flip plates, respectively. The U-shaped rack and pinion is slidably connected to the side wall of the intake pipe, and the two sides of the U-shaped rack and pinion are respectively engaged with two second gears; The flip drive assembly drives the U-shaped rack frame to move when the jet head sprays gas, causing the two flip plates to flip and seal the filter cleaning position, reducing gas leakage.

[0014] Preferably, the flip drive component includes: The inner tube is fixedly connected inside the air intake pipe. A sealing sheet is slidably connected inside the inner tube. A push rod is fixedly connected to the end of the sealing sheet. The end of the push rod passes through the end of the air intake pipe and slides to seal with the air intake pipe. A second spring is fixedly connected between the push rod and the air intake pipe. A drive plate is fixedly connected to a U-shaped rack frame. The drive plate has a slanted groove on its side wall. A sliding pin is fixedly connected to the end of the push rod and is slidably connected in the slanted groove.

[0015] Preferably, the mounting components include: Two screws are symmetrically and fixedly connected to the vibration base; The mounting cover and the sealing cover are symmetrically fixedly connected to mounting blocks on both sides of the housing. The mounting blocks are slidably connected to the screw, and a nut is provided at the top of the screw.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This invention, by setting up a filter screen, annular baffle, and collection box, eliminates the need to stop the machine, open the cover, or manually remove materials after screening. Utilizing the centrifugal force of the filter screen's rotation, the remaining materials on each layer of the screen are automatically and graded and discharged into the corresponding collection box. The entire process is fully automated, reducing the labor intensity of operators and avoiding material spillage, cross-contamination, and data recording errors caused by manual operation.

[0017] This invention, by setting up an air jet head, utilizes air pressure and a flip plate to form a locally sealed cavity during unclogging, enabling continuous blowing of the bottom surface of the continuously rotating filter screen. High-pressure airflow passes in reverse through the screen holes, removing difficult-to-screen particles or materials adhering due to moisture that are clogging the holes. The sealing of the flip plate reduces ineffective diffusion of gas into the housing, concentrating airflow energy in the cleaning area, thereby improving unclogging efficiency and air source utilization.

[0018] This invention, by setting up a sealing plate and an exhaust pipe, allows the sealing plate to move down synchronously when the annular baffle opens to discharge material, blocking the end of the arc-shaped sealing cover. This guides the rising airflow generated by the jet nozzle to be concentrated and orderly discharged from the shell through the exhaust pipe and dustproof net, preventing the airflow from blowing up the fine powder material in the collection box and causing dust. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram showing the connection between the housing, the annular baffle, and the collection box of the present invention; Figure 3 A cross-sectional view of the casing of the present invention. Figure 1 ; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 A cross-sectional view of the casing of the present invention. Figure 2 ; Figure 6 for Figure 5 Enlarged view at point B in the middle; Figure 7 This is a cross-sectional view of the annular inclined plate in this invention; Figure 8 This is a schematic diagram showing the connection between the air intake pipe and the jet head in this invention; Figure 9 This is a cross-sectional view of the air intake pipe in this invention.

[0020] In the diagram: 1. Base; 2. Vibration seat; 3. Screw; 4. Mounting cover; 5. Mounting block; 6. Nut; 7. Housing; 8. Notch; 9. Collection box; 10. Filter screen; 11. Annular inclined plate; 12. Drive motor; 13. Drive gear; 14. Annular rack plate; 15. Annular air chamber; 16. Sliding groove; 17. Compression shell; 18. Sliding seat; 19. First spring; 20. Piston; 21. Connecting rod; 22. L-shaped sliding plate; 23. Annular baffle; 24. Arc-shaped sealing cover; 25. Sealing plate; 26. Bracket; 27. First gear; 28. First rack; 29. ​​Second rack; 30. Exhaust pipe; 31. Dustproof net; 32. Inlet pipe; 33. Jet nozzle; 34. Flip plate; 35. Second gear; 36. U-shaped rack frame; 37. Drive plate; 38. Inclined groove; 39. Inner tube; 40. Sealing plate; 41. Push rod; 42. Sliding pin; 43. Second spring. Detailed Implementation

[0021] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0022] like Figures 1 to 9 The standard vibrating screen with anti-clogging and self-cleaning function shown includes a base 1, a vibrating seat 2 rotatably connected to the top of the base 1, and a vibrating screen mechanism on the vibrating seat 2, which is composed of several vibrating screen components. The vibrating screen assembly includes: The housing 7, several housings 7 are fixed to the vibrating seat 2 by the mounting assembly. Several filter screens 10 are rotatably connected inside the housing 7. An annular inclined plate 11 is fixedly connected to the outer ring wall of the filter screen 10. A rotary drive mechanism is used to drive the filter screen 10 to rotate. An annular baffle 23 is slidably connected to the housing 7 at the position corresponding to the outer ring of the filter screen 10. An arc-shaped sealing cover 24 is fixedly connected to the housing 7 after its end passes through the annular baffle 23. On the shell 7, arc-shaped sealing caps 24 are symmetrically opened on both sides of the notch 8, and a collection box 9 is slidably connected to the outer wall of the shell 7 at the position corresponding to the notch 8. The pushing mechanism drives the annular baffle 23 to move upward during the start-up of the rotary drive mechanism, so that the material in the shell 7 enters the collection box 9 through the notch 8; In existing technology, after screening, the material remaining on the screen of a vibrating screen usually needs to be removed by opening the housing 7 or disassembling the screen. This process not only increases the labor intensity of the operators but also easily causes material spillage and environmental pollution. It can also easily lead to data errors and affect screening efficiency. This technical solution can solve the above problems. The specific operation is as follows: When this vibrating screen is working, the housing 7 of each layer of vibrating screen assembly is first fixed on the vibrating seat 2 by the installation component, and the screen hole size of each layer of filter screen 10 is reduced from top to bottom to form multi-stage screening. Then, the vibration motor (not shown in the figure) inside the base 1 is started, driving the vibrating seat 2 to generate shock vibration. After the screening operation begins, the material to be screened is added from the feed port of the uppermost shell 7. Under the action of shock vibration, the material smaller than the screen hole of the filter screen 10 passes through the screen hole and falls into the next layer, while the material larger than the screen hole remains on the upper surface of the filter screen 10, thus completing the screening. After screening, the rotary drive mechanism starts to work. The drive motor 12 drives the drive gear 13 to rotate. The drive gear 13 meshes with the annular rack plate 14, driving the entire filter screen 10 and the annular inclined plate 11 to rotate together in the housing 7. The rotation of the filter screen 10 generates centrifugal force, causing the material on the screen that is stuck on the screen surface to gradually move towards the edge of the filter screen 10. As the filter screen 10 rotates, the push mechanism starts, driving the annular baffle 23 to slide upward along the inner wall of the housing 7, so that the notch 8 is opened. At this time, under the combined action of centrifugal force and vibration force, the material moves outward along the inclined surface of the annular inclined plate 11, automatically discharges from the housing 7 through the notch 8, and falls into the collection box 9. After the predetermined screening time is completed, the drive motor 12 is turned off, the mechanism is pushed to reset, and the annular baffle 23 falls to reseal the gap 8. Finally, the operator only needs to pull out the collection box 9 to take out the material on each layer of the screen without disassembling the shell 7 or taking out the filter screen 10. For multi-layer vibrating screen components, materials of different particle sizes can be automatically discharged into their respective collection boxes 9. The entire screening and discharge process can be completed continuously without interrupting the vibration, avoiding data errors caused by material scattering due to manual material handling, and eliminating the need for repeated installation of the screening machine, which would result in low efficiency.

[0023] As a further embodiment of the present invention, the installation components include: Two screws 3 are symmetrically and fixedly connected to the vibrating seat 2; Mounting cover 4, sealing cover and housing 7 are symmetrically fixed with mounting blocks 5 on both sides, mounting blocks 5 are slidably connected with screw 3, and screw 3 is provided with a nut 6 at the top of screw 3; Specifically, by setting screw 3 and mounting rod, the housing 7 can be disassembled, making it easy to replace filter screens 10 with different pore sizes.

[0024] As a further embodiment of the present invention, the vibrating screen assembly further includes: The air intake pipe 32 is fixedly connected to the housing 7 at the position below the arc-shaped sealing cover 24. Several jet nozzles 33 are fixedly connected to the top of the air intake pipe 32 in a linear array, which are used to blow air onto the bottom surface of the filter screen 10 to clear the blockage. Specifically, during the rotating sieving process of the filter screen 10, some particles with a diameter close to the screen holes may become stuck in the screen holes, or adhere to the bottom surface of the screen due to high material moisture content. To solve this problem, the present invention provides an air inlet pipe 32 and a jet nozzle 33. The outlet of the jet nozzle 33 faces the bottom surface of the filter screen 10. When an external air source (such as compressed air or a blower) is connected to the air inlet pipe 32, the gas is sprayed at high speed through the jet nozzle 33 to the bottom surface of the filter screen 10. As the filter screen 10 continues to rotate, the jet nozzle 33 can cover the entire screen surface. The high-pressure airflow passes through the screen holes from bottom to top, which can blow away the particles stuck in the screen holes and disperse the wet material or fine powder adhering to the mesh wire, thereby achieving automatic unclogging, reducing the material residue on the filter screen 10, and avoiding affecting the data of the next experiment.

[0025] As a further embodiment of the present invention, the vibrating screen assembly further includes: The sealing plate 25 is slidably connected inside the arc-shaped sealing cover 24; The push component, as the annular baffle 23 moves upward, drives the sealing plate 25 to move downward, so as to seal the end of the arc-shaped sealing cover 24; The vibrating screen assembly also includes: The exhaust pipe 30 is fixedly connected to the arc-shaped sealing cover 24 at its bottom end, the top end of the exhaust pipe 30 penetrates the outer wall of the housing 7, and a dustproof net 31 is fixedly connected to the bottom end of the exhaust pipe 30. Specifically, by setting the sealing plate 25, when the annular baffle 23 moves upward, the sealing plate 25 is driven downward by the pushing component to seal the end of the arc-shaped sealing cover 24. At this time, the gas in the arc-shaped sealing cover 24 can only be discharged through the exhaust pipe 30, thereby preventing the gas from leaking from the end of the arc-shaped sealing cover 24 and entering the collection box 9, causing the material in the collection box 9 to fly. As the annular baffle 23 moves downward, the push assembly drives the sealing plate 25 to move upward and reset, canceling the seal at the end of the arc-shaped sealing cover 24. Subsequently, the material remaining in the arc-shaped sealing cover 24 flows into the collection box 9 through the end of the arc-shaped sealing cover 24.

[0026] As a further embodiment of the present invention, the driving mechanism includes: An annular air chamber 15 is formed inside the housing 7 at a position corresponding to the annular inclined plate 11. The annular inclined plate 11 and the annular air chamber 15 are connected by a sealing ring. Several sliding grooves 16 are arranged in a ring array within an annular inclined plate 11. Sliding seats 18 are slidably connected within the sliding grooves 16, and a first spring 19 is fixedly connected between the sliding seats 18. A compression shell 17 is fixedly connected in a sliding groove 16. The compression shell 17 is connected to the annular air chamber 15 via an air passage. A piston 20 is sealed and slids inside the compression shell 17. A connecting rod 21 is fixedly connected to the side wall of the piston 20. The connecting rod 21 is fixedly connected to the sliding seat 18. Several L-shaped sliding plates 22 are arranged in an annular array and are slidably connected to the inner wall of the housing 7. The bottom end of the L-shaped sliding plate 22 extends into the annular air cavity 15, and the top end of the L-shaped sliding plate 22 is fixedly connected to the annular baffle 23. Specifically, by setting up an annular air chamber 15 and a compression shell 17, during the rotation of the filter screen 10, the sliding seat 18 is driven by centrifugal force to move the piston 20 away from the center. The first spring 19 is compressed. During the process of the piston 20 moving away from the center, the piston 20 moves along the inside of the compression shell 17, which increases the air pressure in the annular air chamber 15. This causes the L-shaped sliding plate 22 to drive the annular baffle 23 to move upward, so as to open the notch 8. When the filter screen 10 stops rotating, under the action of the first spring 19, the piston 20 is reset, the air pressure in the annular air chamber 15 decreases, and the L-shaped sliding plate 22 drives the annular baffle 23 to move downward, sealing the notch 8.

[0027] As a further embodiment of the present invention, the driving component includes: A bracket 26 is fixedly connected to the top of the arc-shaped sealing cover 24, and a first gear 27 is rotatably connected to the bracket 26. The first rack 28 is fixedly connected to the side wall of the annular baffle 23, and the first rack 28 meshes with the first gear 27. The second rack 29 is fixedly connected to the sealing plate 25 and meshes with the first gear 27. Specifically, by setting a first gear 27, a first rack 28, and a second rack 29, as the annular baffle 23 moves upward, the first rack 28 moves upward, thereby driving the first gear 27 to rotate. The first gear 27 drives the second rack 29 to move downward, thereby causing the sealing plate 25 to move downward.

[0028] As a further embodiment of the present invention, it also includes: Two flip plates 34 are symmetrically rotated and connected to both sides of the intake pipe 32; Two second gears 35 are coaxially fixed to two flip plates 34 respectively; U-shaped rack and pinion 36 is slidably connected to the side wall of the intake pipe 32, and the two sides of the U-shaped rack and pinion 36 are respectively engaged with two second gears 35; The flip drive assembly drives the U-shaped rack and pinion frame 36 to move when the jet head 33 sprays gas, causing the two flip plates 34 to flip and seal the cleaning position of the filter screen 10, reducing gas leakage. The flip drive component includes: The inner tube 39 is fixedly connected inside the air intake pipe 32. A sealing plate 40 is slidably connected inside the inner tube 39. A push rod 41 is fixedly connected to the end of the sealing plate 40. The end of the push rod 41 passes through the end of the air intake pipe 32 and slides and seals with the air intake pipe 32. A second spring 43 is fixedly connected between the push rod 41 and the air intake pipe 32. The drive plate 37 is fixedly connected to the U-shaped rack frame 36. The drive plate 37 has a groove 38 on its side wall. The end of the push rod 41 is fixedly connected to a sliding pin 42, which is slidably connected in the groove 38. Specifically, after the external air source is connected to the air inlet pipe 32, the air pressure in the inner pipe 39 increases, causing the sealing plate 40 and the push rod 41 to move. The second spring 43 is compressed. During the movement of the push rod 41, the sliding pin 42 moves along the inclined groove 38. Driven by the inclined groove 38, the U-shaped rack frame 36 moves downward, thereby driving the second gear 35 to rotate and the flip plate 34 to rotate, so as to seal the cleaning position of the filter screen 10, reduce gas leakage, and prevent the gas from affecting the material inside the housing 7. When the gas supply stops, the U-shaped rack frame 36 is reset and the flip plate 34 is reset and unfolded under the action of the second spring 43. At this time, the filter screen 10 continues to rotate, and the material in the arc-shaped sealing cover 24 is screened through the filter screen 10, which helps to improve the screening accuracy and avoid errors.

[0029] The working principle of this invention is as follows: When this vibrating screen is working, the housing 7 of each layer of vibrating screen assembly is first fixed on the vibrating seat 2 by the installation component, and the screen hole size of each layer of filter screen 10 is ensured to decrease from top to bottom in order to form multi-stage screening; Then, the vibration motor (not shown in the figure) inside the base 1 is started, driving the vibrating seat 2 to generate shock vibration. After the screening operation begins, the material to be screened is added from the feed port of the uppermost shell 7. Under the action of shock vibration, the material smaller than the screen hole of the filter screen 10 passes through the screen hole and falls into the next layer, while the material larger than the screen hole remains on the upper surface of the filter screen 10, thus completing the screening. After screening, the rotary drive mechanism starts to work. The drive motor 12 drives the drive gear 13 to rotate. The drive gear 13 meshes with the annular rack plate 14, driving the entire filter screen 10 and the annular inclined plate 11 to rotate together in the housing 7. The rotation of the filter screen 10 generates centrifugal force, causing the material on the screen that is stuck on the screen surface to gradually move towards the edge of the filter screen 10. As the filter screen 10 rotates, the push mechanism starts, driving the annular baffle 23 to slide upward along the inner wall of the housing 7, so that the notch 8 is opened. At this time, under the combined action of centrifugal force and vibration force, the material moves outward along the inclined surface of the annular inclined plate 11, automatically discharges from the housing 7 through the notch 8, and falls into the collection box 9. After the predetermined screening time is completed, the drive motor 12 is turned off, the mechanism is pushed to reset, and the annular baffle 23 falls to reseal the gap 8. Finally, the operator only needs to pull out the collection box 9 to take out the material on each layer of the screen without disassembling the shell 7 or taking out the filter screen 10. For multi-layer vibrating screen components, materials of different particle sizes can be automatically discharged into their respective collection boxes 9. The entire screening and discharge process can be completed continuously without interrupting the vibration, avoiding data errors caused by material scattering due to manual material handling, and eliminating the need for repeated installation of the screening machine, which would result in low efficiency.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A standard vibrating screen with anti-clogging and self-cleaning function, comprising a base (1), a vibrating seat (2) rotatably connected to the top of the base (1), a vibrating screen mechanism being provided on the vibrating seat (2), the vibrating screen mechanism being composed of several vibrating screen components, characterized in that, The vibrating screen assembly includes: The housing (7) is fixed to the vibrating seat (2) by a mounting assembly. Several filter screens (10) are rotatably connected inside the housing (7). An annular inclined plate (11) is fixedly connected to the outer ring wall of the filter screen (10). A rotary drive mechanism is provided for driving the filter screen (10) to rotate. An annular baffle (23) is slidably connected inside the housing (7) at the position corresponding to the outer ring of the filter screen (10); An arc-shaped sealing cover (24) is fixedly connected to the housing (7) after its end passes through an annular baffle (23); The notch (8) is symmetrically opened on both sides of the housing (7) of the arc-shaped sealing cover (24), and the outer wall of the housing (7) is slidably connected to the collection box (9) at the position corresponding to the notch (8). The pushing mechanism drives the annular baffle (23) to move upward during the start-up of the rotary drive mechanism, so that the material in the housing (7) enters the collection box (9) through the notch (8).

2. The impact-type standard vibrating screen with anti-clogging and self-cleaning function according to claim 1, characterized in that, The vibrating screen assembly further includes an air inlet pipe (32), which is fixedly connected to the housing (7) at the position below the arc-shaped sealing cover (24). Several jet nozzles (33) are fixedly connected to the top of the air inlet pipe (32) in a linear array for blowing air onto the bottom surface of the filter screen (10) to clear blockages.

3. The standard vibrating screen with anti-clogging and self-cleaning function according to claim 1, characterized in that, The vibrating screen assembly further includes: a sealing plate (25), which is slidably connected inside the arc-shaped sealing cover (24); The pushing component drives the sealing plate (25) to move downward as the annular baffle (23) moves upward, so as to seal the end of the arc-shaped sealing cover (24).

4. A standard vibrating screen with anti-clogging and self-cleaning function according to claim 3, characterized in that, The vibrating screen assembly also includes: The exhaust pipe (30) is fixedly connected to the bottom end of the arc-shaped sealing cover (24), the top end of the exhaust pipe (30) penetrates the outer wall of the housing (7), and a dustproof net (31) is fixedly connected to the bottom end of the exhaust pipe (30).

5. A standard vibrating screen with anti-clogging and self-cleaning function according to claim 1, characterized in that, The propulsion mechanism includes: An annular air chamber (15) is formed in the housing (7) at the position corresponding to the annular inclined plate (11). The annular inclined plate (11) and the annular air chamber (15) are connected by a sealing ring. Several sliding grooves (16) are arranged in a ring array within an annular inclined plate (11). A sliding seat (18) is slidably connected within the sliding groove (16). A first spring (19) is fixedly connected between the sliding seats (18). A compression shell (17) is fixedly connected in a sliding groove (16). The compression shell (17) is connected to the annular air chamber (15) via an air passage. A piston (20) is sealed and slidably inside the compression shell (17). A connecting rod (21) is fixedly connected to the side wall of the piston (20). The connecting rod (21) is fixedly connected to the sliding seat (18). Several L-shaped sliding plates (22) are arranged in an annular array and are slidably connected to the inner wall of the housing (7). The bottom end of the L-shaped sliding plate (22) extends into the annular air cavity (15), and the top end of the L-shaped sliding plate (22) is fixedly connected to the annular baffle (23).

6. A standard vibrating screen with anti-clogging and self-cleaning function according to claim 1, characterized in that, The rotary drive mechanism includes: A drive motor (12) is fixedly connected to the outer wall of the housing (7). A drive gear (13) is fixedly connected to the end of the output shaft of the drive motor (12). The drive gear (13) is rotatably connected inside the housing (7). An annular rack plate (14) is fixedly connected to the bottom surface of an annular inclined plate (11) and meshes with a drive gear (13).

7. A standard vibrating screen with anti-clogging and self-cleaning function according to claim 3, characterized in that, The pushing assembly includes: a bracket (26), which is fixedly connected to the top of the arc-shaped sealing cover (24), and a first gear (27) is rotatably connected to the bracket (26); a first rack (28), which is fixedly connected to the side wall of the annular baffle (23), and the first rack (28) meshes with the first gear (27); and a second rack (29), which is fixedly connected to the sealing plate (25), and the second rack (29) meshes with the first gear (27).

8. A standard vibrating screen with anti-clogging and self-cleaning function according to claim 2, characterized in that, Also includes: Two flip plates (34) are symmetrically rotated and connected to both sides of the air intake pipe (32); Two second gears (35) are coaxially fixed to two flip plates (34) respectively; U-shaped rack and pinion (36), which is slidably connected to the side wall of the intake pipe (32), and the two sides of the U-shaped rack and pinion (36) are respectively engaged with two second gears (35); The flip drive assembly drives the U-shaped rack frame (36) to move when the jet head (33) sprays gas, causing the two flip plates (34) to flip and seal the cleaning position of the filter screen (10) to reduce gas leakage.

9. The shock-type standard vibrating sieve machine with anti-blocking self-cleaning function according to claim 8, characterized in that, The flip drive component includes: An inner tube (39) is fixedly connected inside an air intake pipe (32). A sealing plate (40) is slidably connected inside the inner tube (39). A push rod (41) is fixedly connected to the end of the sealing plate (40). The end of the push rod (41) passes through the end of the air intake pipe (32) and slides and seals with the air intake pipe (32). A second spring (43) is fixedly connected between the push rod (41) and the air intake pipe (32). The drive plate (37) is fixedly connected to the U-shaped rack frame (36). The drive plate (37) has a groove (38) on its side wall. The end of the push rod (41) is fixedly connected to a sliding pin (42), which is slidably connected in the groove (38).

10. A standard vibrating screen with anti-clogging and self-cleaning function according to claim 1, characterized in that, The mounting assembly includes: two screws (3), which are symmetrically fixedly connected to the vibration seat (2); a mounting cover (4), which is symmetrically fixedly connected to both sides of the sealing cover and the housing (7) with mounting blocks (5), which are slidably connected to the screws (3), and a nut (6) is provided at the top of the screws (3).

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