CN117840024A - Sand and stone vibration screening device and sorting system - Google Patents

Abstract

The present invention discloses a sand and gravel vibration screening device and sorting system, comprising a sand and gravel screening device body, wherein a feeding hopper is arranged at the upper end of the sand and gravel screening device body. By sequentially arranging and installing a coarse sand screening plate, a medium sand screening plate, and a fine sand screening plate on the inner side of the sand and gravel screening device body, the sorting of sand and gravel with different particle sizes can be realized. A sand material storage system is added below the discharge end of the discharge hopper, so that the classified storage of sand and gravel with different particle sizes can be realized. At this time, two groups of driving parts are controlled to run synchronously. Under the action of the vibration sorting system, the magnetic impact block reciprocates and hammers the bottom connecting frame plate connecting the lower end position of each group of screening plates, and assists in vibrating the sand and gravel above the inclined screening plate to avoid the blockage of the screen hole. In combination with the setting of the upper knocking system, continuous hammering of the upper end position of the screening plate can be realized, so as to solve the problem that the existing screen holes are easily blocked with stones and difficult to shake out, and stones stuck in different numbers of screens can be shaken off.

Description

A sand and gravel vibration screening device and sorting system

Technical Field

The invention belongs to the technical field of sand and gravel sorting, and specifically relates to a sand and gravel vibration screening device and a sorting system.

Background technique

Sand and gravel aggregate is one of the materials used in the field of building materials. In the specific production process, the sand and gravel aggregate production system is often required to crush, screen, wash, store and transport the raw materials of sand and gravel aggregate. The existing sand and gravel aggregate production system includes a crusher, a conveyor, a screening device, and a cleaning device. During production, the raw materials of sand and gravel aggregate are first crushed by a crusher. The crushed sand and gravel aggregate will be transported to the screening device through a conveyor and sorted into sand and gravel aggregates of different particle sizes.

In the prior art, a screen is connected to the ground using a plurality of springs distributed in a vertical array, and the springs are placed on the ground through a base; then a vibration motor is installed on the screen as a vibration source; when in use, the vibration of the vibration motor causes the screen to vibrate, and the sand and gravel aggregates in the screen are screened.

However, in actual use, the vibration motor continuously vibrates the screen to complete the screening of aggregates, and the different numbers of screen holes are easily clogged and the stones are difficult to shake out, affecting the efficiency of sorting.

Therefore, we proposed a sand and gravel vibration screening device and sorting system to solve the problem that the existing screen holes are easily clogged with stones and difficult to shake out. The system can shake out stones stuck in different numbers of screens.

Summary of the invention

In view of the shortcomings of the prior art, the purpose of the present invention is to provide a sand and gravel vibration screening device and sorting system, which has the advantage of solving the problem that the holes of the existing screens are easily clogged with stones and are difficult to shake out, and can shake out stones stuck in different numbers of screens.

To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sand and gravel vibrating screening device and a sorting system, comprising a sand and gravel screening device body, a feeding hopper is arranged at the upper end of the sand and gravel screening device body, a coarse sand screening plate, a medium sand screening plate and a fine sand screening plate are arranged inside the sand and gravel screening device body, the coarse sand screening plate, the medium sand screening plate and the fine sand screening plate are arranged in sequence from top to bottom, a discharge port is arranged at the inclined low point of the coarse sand screening plate, the medium sand screening plate and the fine sand screening plate, a discharge hopper is fixedly added to the outside of the discharge port, and A sand storage system is provided at the lower side of the discharging hopper, a T-shaped support plate is fixedly installed on the outer surface of the side of the sand and gravel screening device body away from the discharging hopper, a vibration sorting system is provided on the outer side of the T-shaped support plate, and the vibration sorting system is arranged at the lower end position of the upper angle of the coarse sand screening plate, the medium sand screening plate and the fine sand screening plate, and a U-shaped support frame is fixedly mounted on one end of the sand and gravel screening device body away from the vibration sorting system, an electric telescopic rod is fixedly installed on the upper end of the U-shaped support frame, and an upper knocking system is provided at the output end of the electric telescopic rod.

Preferably, the sand storage system includes a blanking box and a fine sand storage box, the blanking boxes are arranged in three groups, and baffles are distributed on the outer sides of two blanking boxes, the baffles are set in three, and the three baffles are arranged in a stepped shape as a whole, the fine sand storage box is movably installed directly below the fine sand screening plate, and the lower surface of the fine sand storage box is movably connected to the bottom of the inner cavity of the sand and gravel screening device body.

Preferably, the vibration sorting system includes a driving member, and the driving member is provided with two groups. The two groups of driving members are respectively fixedly mounted on the upper surfaces of both ends of the T-shaped support plate, and the driving directions of the two groups of driving members are opposite. A linkage component is fixedly connected to the output shaft of the driving member, and the linkage component includes a transmission chain and a transmission gear combination.

Preferably, the output end of the linkage assembly is fixedly connected to a cam plate, a movable shaft is fixedly connected to the inner wall of one end of the cam plate, a movable vertical plate is provided on the outer surface of the movable shaft, an auxiliary limiting sliding groove is provided on the inner surface of the movable vertical plate, and the inner surface of the sliding groove is movably connected to the outer surface of the movable shaft.

Preferably, the outer surface of the movable vertical plate on the side away from the driving member is fixedly connected to a limiting strip plate, and the limiting strip plate is fixedly installed on the outer surface of the sand and gravel screening device body. A movable groove is opened on the inner wall of the limiting strip plate, and a magnetic slider is slidably connected to the inner surface of the movable groove.

Preferably, the vibration sorting system also includes a bottom connecting frame plate, which is fixedly installed on the lower ends of the coarse sand screening plate, the medium sand screening plate and the fine sand screening plate, and a sliding rod is fixedly installed on the inner surface of the bottom connecting frame plate, and the other end of the sliding rod is fixedly connected to a supporting block fixedly connected to the lower surfaces of the coarse sand screening plate, the medium sand screening plate and the fine sand screening plate, and a magnetic impact unit is arranged on the inner side of the supporting block. The bottom connecting frame plates are arranged in two groups, and the bottom connecting frame plates are symmetrically distributed about the central axis of the coarse sand screening plate, and a bottom auxiliary vibration unit is fixedly added to the outer surface of the bottom connecting frame plate.

Preferably, the magnetic impact unit includes a spiral telescopic spring bar and a magnetic impact block, one end of the spiral telescopic spring bar is fixedly connected to the outer surface of the support block, the other end of the spiral telescopic spring bar is fixedly connected to the outer surface of the magnetic impact block, the spiral telescopic spring bar and the magnetic impact block are respectively slidably connected to the outer surface of the sliding rod, and the magnetic impact block has a trapezoidal truncated cone-shaped columnar structure as a whole.

Preferably, the upper knocking system includes an anti-collision cylinder, a limiting groove is provided on the inner wall of the anti-collision cylinder, the lower end of the anti-collision cylinder is fixedly connected to the oblique lower angle upper surfaces of the coarse sand screening plate, the medium sand screening plate and the fine sand screening plate respectively, the upper end inner surface of the anti-collision cylinder is slidably connected to the outer surface of the piston rod at the output end of the electric telescopic rod, and the lower end of the piston rod at the output end of the electric telescopic rod is provided with an automatic lifting and falling unit.

Preferably, the automatic lifting and falling unit includes a lifting cylinder, which is arranged in two groups. The two groups of lifting cylinders are symmetrically distributed about the central axis of the anti-collision cylinder, the upper end of the lifting cylinder is fixedly connected to the lower end of the piston rod, and the outer surface of the lifting cylinder is slidingly connected to the inner wall of the anti-collision cylinder, and the inner side of the lifting cylinder is movably connected with a grab arm, and the grab arms are respectively rotatably connected to the inner wall of the lifting cylinder, and the grab arms are arranged in two groups, and the grab arms are mirror-distributed about the piston rod, the outer surface of the upper end of the grab arm is movably abutted against the inner wall of the fitting groove preset at the upper end of the anti-collision cylinder, and an elastic clamping unit is arranged on the inner side of the grab arm.

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

The coarse sand screening plate, the medium sand screening plate and the fine sand screening plate are arranged and installed on the inner side of the sand and gravel screening device body in sequence, so as to sort the sand and gravel with different particle sizes. By adding a sand storage system below the discharge end of the discharging hopper, the classified storage of sand with different particle sizes can be realized. At this time, the two groups of driving parts are controlled to run synchronously. Under the action of the vibration sorting system, the magnetic impact block reciprocates and hammers the bottom connecting frame plate connecting the lower end of each group of screening plates, and assists in vibrating the sand and gravel above the inclined screening plate to avoid clogging of the screen holes. In combination with the setting of the upper knocking system, continuous hammering of the upper end of the screening plate can be realized, which solves the problem that the existing screen holes are easily clogged with stones and are difficult to shake out, and can shake out stones stuck in different numbers of screens.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a three-dimensional structure of the present invention;

FIG2 is a schematic diagram of a three-dimensional cross-sectional structure of the present invention;

FIG3 is a schematic diagram of the connection structure between the vibration sorting system and the screening plate of the present invention;

FIG4 is a schematic diagram of a partial three-dimensional structure of a vibration sorting system of the present invention;

FIG5 is an enlarged structural schematic diagram of point A in FIG4 of the present invention;

FIG6 is a partial bottom view of the coarse sand screening plate of the present invention;

FIG7 is a schematic side cross-sectional structural diagram of the sand and gravel screening device body of the present invention;

FIG8 is an enlarged structural schematic diagram of point B in FIG7 of the present invention;

FIG. 9 is an enlarged structural schematic diagram of point C in FIG. 8 of the present invention.

In the figure: 1. Sand and gravel screening device body; 2. Feeding hopper; 3. Discharging hopper; 4. Baffle; 5. Dropping box; 6. Fine sand storage box; 7. Coarse sand screening plate; 8. Medium sand screening plate; 9. Fine sand screening plate; 10. Bottom connecting frame plate; 11. T-shaped support plate; 12. Driving member; 13. Linkage assembly; 14. Cam plate; 15. Movable shaft rod; 16. Moving vertical plate; 161. Limiting strip plate; 16 2. Magnetic slider; 17. Support block; 18. Sliding rod; 19. Spiral telescopic spring strip; 20. Magnetic impact block; 21. Curved spring plate; 22. Mounting frame; 23. Impact ball; 24. U-shaped support frame; 25. Electric telescopic rod; 26. Anti-collision cylinder; 261. Limiting groove; 262. Fitting groove; 27. Lifting cylinder; 28. Grasping arm; 29. Elastic component; 30. Hammer weight; 31. T-shaped clamping rod.

Detailed ways

In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Embodiment 1

Please refer to Figures 1 to 9. The present invention provides a technical solution: a sand and gravel vibration screening device and a sorting system, including a sand and gravel screening device body 1, a feeding hopper 2 is arranged at the upper end of the sand and gravel screening device body 1, and a coarse sand screening plate 7, a medium sand screening plate 8 and a fine sand screening plate 9 are respectively arranged inside the sand and gravel screening device body 1. The coarse sand screening plate 7, the medium sand screening plate 8 and the fine sand screening plate 9 are arranged in sequence from top to bottom, and a discharge port is arranged at the inclined low point of the coarse sand screening plate 7, the medium sand screening plate 8 and the fine sand screening plate 9, and a discharge port is fixedly provided outside the discharge port, and the discharge hopper 3 A sand storage system is arranged at the lower side, a T-shaped support plate 11 is fixedly installed on the outer surface of one side of the sand and gravel screening device body 1 away from the discharge hopper 3, a vibration sorting system is arranged on the outer side of the T-shaped support plate 11, and the vibration sorting system is arranged at the lower end position of the upper angle of the coarse sand screening plate 7, the medium sand screening plate 8 and the fine sand screening plate 9, a U-shaped support frame 24 is fixedly arranged at one end of the sand and gravel screening device body 1 away from the vibration sorting system, an electric telescopic rod 25 is fixedly installed on the upper end of the U-shaped support frame 24, and an upper knocking system is arranged at the output end of the electric telescopic rod 25, and the sand storage system includes There are a blanking box 5 and a fine sand storage box 6, the blanking box 5 is arranged in three groups, and baffles 4 are distributed on the outside of two blanking boxes 5, and the baffles 4 are arranged in three groups. The three baffles 4 are arranged in a stepped shape as a whole, and the fine sand storage box 6 is movably installed just below the fine sand screening plate 9, and the lower surface of the fine sand storage box 6 is movably connected to the bottom of the inner cavity of the sand and gravel screening device body 1. By sequentially arranging the coarse sand screening plate 7, the medium sand screening plate 8, and the fine sand screening plate 9 on the inner side of the sand and gravel screening device body 1, the sorting of sand and gravel with different particle sizes is realized, and the discharge end of the discharge hopper 3 is increased. A sand storage system is provided to realize classified storage of sand of different particle sizes. At this time, the two groups of driving parts 12 are controlled to run synchronously. Under the action of the vibration sorting system, the magnetic impact block 20 reciprocates and hammers the bottom connecting frame plate 10 connected to the lower end of each group of screening plates, and assists in vibrating the sand and gravel above the inclined screening plate to avoid blockage of the screen holes. In combination with the setting of the upper knocking system, continuous hammering of the upper end of the screening plate can be realized, which solves the problem that the existing screen holes are easily blocked by stones and difficult to shake out, and can shake out stones stuck in different numbers of screens.

Embodiment 2

Referring to Figures 1-9, based on the first embodiment, this embodiment adds a vibration sorting system:

The vibration sorting system includes a driving member 12, which is provided with two groups. The two groups of driving members 12 are respectively fixedly installed on the upper surfaces of both ends of the T-shaped support plate 11, and the driving directions of the two groups of driving members 12 are opposite. A linkage component 13 is fixedly connected to the output shaft of the driving member 12, and a cam plate 14 is fixedly connected to the output end of the linkage component 13. A movable shaft rod 15 is fixedly connected to the inner wall of one end of the cam plate 14, and a movable vertical plate 16 is provided on the outer surface of the movable shaft rod 15. A sliding groove for auxiliary limiting is provided on the inner surface of the movable vertical plate 16. The inner surface of the sliding groove is movably connected to the outer surface of the movable shaft rod 15. The outer surface of the movable vertical plate 16 away from the driving member 12 is fixedly connected to a limiting strip plate 161. The limiting strip plate 161 is fixedly installed on the outer surface of the sand and gravel screening device body 1, and a moving groove is provided on the inner wall of the limiting strip plate 161. The inner surface of the moving groove is slidably connected with a magnetic suction slider 162. The vibration sorting system also includes a bottom connecting frame plate 10, and a bottom connecting frame plate 10 is provided. The connecting frame plate 10 is fixedly installed on the lower ends of the coarse sand screening plate 7, the medium sand screening plate 8 and the fine sand screening plate 9, and a sliding rod 18 is fixedly installed on the inner surface of the bottom connecting frame plate 10. The other end of the sliding rod 18 is fixedly connected to a support block 17 fixedly connected to the lower surfaces of the coarse sand screening plate 7, the medium sand screening plate 8 and the fine sand screening plate 9. A magnetic impact unit is arranged on the inner side of the support block 17. The bottom connecting frame plate 10 is arranged in two groups. The bottom connecting frame plates 10 are symmetrically distributed about the central axis of the coarse sand screening plate 7. A bottom auxiliary vibration unit is fixedly provided on the outer surface of the bottom connecting frame plate 10. The magnetic impact unit includes a spiral telescopic spring strip 19 and a magnetic impact block 20. One end of the spiral telescopic spring strip 19 is fixedly connected to the outer surface of the support block 17, and the other end of the spiral telescopic spring strip 19 is fixedly connected to the outer surface of the magnetic impact block 20. The spiral telescopic spring strip 19 and the magnetic impact block 20 are respectively slidably connected to the outer surface of the sliding rod 18, and the magnetic impact block 20 is a trapezoidal truncated cone columnar structure as a whole.

The driving member 12 is controlled to be turned on so that its output shaft rotates as the hub of power transmission. At this time, the linkage assembly 13 drives the transmission chain to move and makes multiple sets of gears move synchronously, thereby realizing the synchronous rotation of multiple sets of cam plates 14. At this time, the movable shaft rod 15 fixedly connected to the upper end of the cam plate 14 drives the movable vertical plate 16 connected to the magnetic slider 162 to move horizontally. At this time, the limiting strip 161 and the magnetic collision block 20 are two magnetic poles of opposite sexes that attract each other. When the magnetic slider 162 moves to the left under the action of the driving force, the magnetic collision block 20 slides horizontally on the surface of the sliding rod 18, thereby realizing the collision with the bottom connection frame plate 10. When the magnetic slider 162 moves horizontally to the right inside the limiting strip 161, the magnetic impact block 20 moves away from the bottom connecting frame plate 10, and at this time the spiral telescopic spring bar 19 is affected by the pushing force from the magnetic impact block 20 to produce a contraction deformation. When the magnetic slider 162 moves back and forth horizontally, the magnetic impact block 20 reciprocates and impacts the bottom connecting frame plate 10. At this time, the vibration force exerted on the bottom connecting frame plate 10 is transmitted to the screening plate connected above, so that continuous shaking of multiple groups of screening plates can be achieved, further solving the problem that the existing screen holes are easily clogged with stones and are difficult to shake out, and stones stuck in different numbers of screens can be shaken out.

Embodiment 3

Referring to Figures 1-9, based on the first embodiment, this embodiment adds an upper striking system:

The upper knocking system includes an anti-collision cylinder 26, and a limiting groove 261 is provided on the inner wall of the anti-collision cylinder 26. The lower end of the anti-collision cylinder 26 is fixedly connected to the upper surfaces of the lower angles of the coarse sand screening plate 7, the medium sand screening plate 8, and the fine sand screening plate 9, respectively. The inner surface of the upper end of the anti-collision cylinder 26 is slidably connected to the outer surface of the piston rod at the output end of the electric telescopic rod 25. The lower end of the piston rod at the output end of the electric telescopic rod 25 is provided with an automatic lifting and falling unit. The automatic lifting and falling unit includes a lifting cylinder 27. The lifting cylinder 27 is provided in two groups, and the two groups of lifting cylinders 2 7 is symmetrically distributed about the central axis of the anti-collision cylinder 26, the upper end of the lifting cylinder 27 is fixedly connected to the lower end of the piston rod, and the outer surface of the lifting cylinder 27 is slidably connected to the inner wall of the anti-collision cylinder 26, and the inner side of the lifting cylinder 27 is movably connected with a grab arm 28, which is rotatably connected to the inner wall of the lifting cylinder 27 respectively. There are two groups of grab arms 28, which are mirror-distributed about the piston rod, and the outer surface of the upper end of the grab arm 28 is movably abutted against the inner wall of the fitting groove 262 preset at the upper end of the anti-collision cylinder 26, and an elastic clamping unit is provided on the inner side of the grab arm 28;

By adding an upper knocking system at the upper oblique lower end of the coarse sand screening plate 7, the medium sand screening plate 8, and the fine sand screening plate 9, the U-shaped support frame 24 is erected at a position of the sand and gravel screening device body 1 close to the screening plate discharge port, and the electric telescopic rod 25 is fixedly installed on the upper end of the U-shaped support frame 24. At this time, the electric telescopic rod 25 is controlled to rise and fall synchronously, and the lifting cylinder 27 slides on the inner wall of the anti-collision cylinder 26 under the lifting action of the electric telescopic rod 25. At this time, when the grab arm 28 moves to the upper end of the T-shaped clamping rod 31, the lower end of the grab arm 28 is adapted to clamp with the upper part of the T-shaped clamping rod 31, driving the hammer 3 0 is lifted, at this time, the electric telescopic rod 25 is controlled to be lifted, and when the upper end of the grab arm 28 is lifted to a position that fits with the inner wall of the fitting groove 262, the fitting groove 262 blocks the grab arm 28, and the upper end of the grab arm 28 is slightly closed. At this time, the lower end of the grab arm 28 is slightly opened, and the lower end of the grab arm 28 is separated from the T-shaped clamping rod 31. At this time, the hammer weight 30 falls and hammers with the upper end of the screening plate, thereby achieving the effect of automatic reciprocating hammering, further solving the problem that the existing screen holes are easily blocked with stones and difficult to shake out, and different numbers of stones stuck in the screen can be shaken out.

Embodiment 4

Referring to Figures 1-9, based on the third embodiment, this embodiment adds a bottom auxiliary vibration unit:

The bottom auxiliary vibration unit includes a curved spring plate 21, one end of which is fixedly connected to the outer surface of the bottom connecting frame plate 10 by bolts, a mounting frame 22 is fixedly installed on the upper curved surface of the curved spring plate 21, and an impact ball 23 is rotatably connected to the inner side of the mounting frame 22, and the upper end outer surface of the impact ball 23 is movably connected to the lower end outer surface of the coarse sand screening plate 7, the medium sand screening plate 8, and the fine sand screening plate 9 respectively;

By adding an auxiliary vibration unit at the bottom, when the bottom connecting frame plate 10 is subjected to the reciprocating impact of the magnetic impact block 20, a certain amount of shaking will be generated. When the shaking is transmitted to the screening plate, it will also be transmitted to the curved spring plate 21 connected to one side of the bottom connecting frame plate 10. At this time, the curved spring plate 21 is vibrated, and the mounting frame 22 drives the impact ball 23 to shake up and down, which can assist in knocking the lower end of the screening plate and accelerate the shaking-off speed of the sand and gravel on the upper end of the screening plate, further solving the problem that the existing screen holes are easily clogged with stones and are difficult to shake out, and stones stuck in different numbers of screens can be shaken off.

Embodiment 5

Referring to Figures 1-9, based on the fourth embodiment, this embodiment adds an elastic clamping unit:

The elastic clamping unit includes an elastic component 29, both ends of which are fixedly connected to the inner surface of the gripping arm 28, and a T-shaped clamping rod 31 is movably clamped at the lower end of the gripping arm 28. A hammer weight 30 slidably connected to the inner wall of the anti-collision cylinder 26 is fixedly connected at the lower end of the T-shaped clamping rod 31, and the lower surface of the hammer weight 30 is movably connected to the upper surfaces of the coarse sand screening plate 7, the medium sand screening plate 8, and the fine sand screening plate 9 respectively.

By adding an elastic component 29 on the inner side of the grab arm 28, it is possible to achieve rapid resetting after the grab arm 28 and the T-shaped clamping rod 31 are separated, which is convenient for the subsequent automatic clamping and lifting of the hammer 30 by the grab arm 28. The T-shaped clamping rod 31 is set as a "T"-shaped columnar structure to facilitate the clamping of the lower end of the grab arm 28 and prevent it from falling off during the lifting process, which is convenient for effective limiting. It further solves the problem that the existing screen holes are easily clogged with stones and are difficult to shake out, and different numbers of stones stuck in the screen can be shaken out.

The working principle and use process of the present invention:

First, the staff pours the sand and gravel to be sorted from the feeding hopper 2 into the interior of the sand and gravel screening device body 1. The sand and gravel are first screened by the coarse sand screening plate 7. A sand storage system is added below the discharge end of the discharge hopper 3 to realize the classified storage of sand materials with different particle sizes. At this time, the two sets of driving parts 12 are controlled to run synchronously, so that their output shafts rotate as the hub of power transmission. At this time, the linkage component 13 drives the transmission chain to move and makes multiple sets of gears move synchronously, realizing the synchronous rotation of multiple sets of cam plates 14. At this time, the movable shaft rod 15 fixedly connected to the upper end of the cam plate 14 drives the movable vertical plate 16 connected to the magnetic suction slider 162 to move horizontally. At this time, there are two magnetic poles of opposite sex between the limit strip 161 and the magnetic collision block 20. When the magnetic slider 162 moves to the left under the action of the driving force, the magnetic collision block 20 slides horizontally on the surface of the slide rod 18, thereby realizing the collision with the bottom connection frame plate 10. When the magnetic slider 162 moves horizontally to the right inside the limit strip 161, the magnetic collision block 20 moves away from the bottom connection frame plate 10, and at this time, the spiral telescopic elastic strip 19 is affected by the pushing force from the magnetic collision block 20 to produce contraction deformation. When the magnetic slider 162 moves back and forth horizontally, the magnetic collision block 20 reciprocates and collides with the bottom connection frame plate 10. At this time, the bottom connection frame plate 1 0 is transmitted to the screening plate connected above, so that the continuous shaking of multiple groups of screening plates can be achieved. In addition, the electric telescopic rod 25 is controlled to rise and fall synchronously, and the lifting cylinder 27 slides on the inner wall of the anti-collision cylinder 26 under the lifting action of the electric telescopic rod 25. At this time, when the grasping arm 28 moves to the upper end of the T-shaped card rod 31, the lower end of the grasping arm 28 is adapted to clamp with the upper part of the T-shaped card rod 31, driving the hammer 30 to rise. At this time, the electric telescopic rod 25 is controlled to rise, and when the upper end of the grasping arm 28 is lifted to the position that fits with the inner wall of the fitting groove 262, the fitting groove 262 blocks the grasping arm 28, and the upper end of the grasping arm 28 is slightly closed. At this time, the lower end of the grab arm 28 is slightly opened, and the lower end of the grab arm 28 is separated from the T-shaped clamping rod 31. At this time, the hammer weight 30 falls and hammers with the upper end of the screening plate, thereby realizing the effect of automatic reciprocating hammering. In addition, when the bottom connecting frame plate 10 is reciprocated by the magnetic impact block 20, a certain vibration will be generated. When the vibration is transmitted to the screening plate, it will also be transmitted to the curved spring plate 21 connected to one side of the bottom connecting frame plate 10. At this time, the curved spring plate 21 is vibrated, and the mounting frame 22 drives the impact ball 23 to shake up and down, which can assist in knocking the lower end of the screening plate and accelerate the shaking-off speed of the sand and gravel on the upper end of the screening plate.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims (9)

1. A sand and gravel vibrating screening device and a sorting system, comprising a sand and gravel screening device body (1), characterized in that: a feeding hopper (2) is arranged at the upper end of the sand and gravel screening device body (1), a coarse sand screening plate (7), a medium sand screening plate (8) and a fine sand screening plate (9) are arranged inside the sand and gravel screening device body (1), the coarse sand screening plate (7), the medium sand screening plate (8) and the fine sand screening plate (9) are arranged in sequence from top to bottom, a discharge port is arranged at the inclined low point of the coarse sand screening plate (7), the medium sand screening plate (8) and the fine sand screening plate (9), a discharge port is fixedly provided outside the discharge port, and the discharge hopper (3) ) is provided with a sand material storage system at the lower side, a T-shaped support plate (11) is fixedly installed on the outer surface of one side of the sand and gravel screening device body (1) away from the discharge hopper (3), a vibration sorting system is provided on the outer side of the T-shaped support plate (11), and the vibration sorting system is arranged at the lower end position of the upper angle of the coarse sand screening plate (7), the medium sand screening plate (8) and the fine sand screening plate (9), and a U-shaped support frame (24) is fixedly installed at one end of the sand and gravel screening device body (1) away from the vibration sorting system, an electric telescopic rod (25) is fixedly installed on the upper end of the U-shaped support frame (24), and an upper knocking system is provided at the output end of the electric telescopic rod (25). 2. A sand and gravel vibration screening device and sorting system according to claim 1, characterized in that: the sand storage system includes a blanking box (5) and a fine sand storage box (6), the blanking boxes (5) are arranged in three groups, and baffles (4) are distributed on the outside of two blanking boxes (5), the baffles (4) are arranged in three groups, and the three baffles (4) are arranged in a stepped shape as a whole, the fine sand storage box (6) is movably installed directly below the fine sand screening plate (9), and the lower surface of the fine sand storage box (6) is movably connected to the bottom of the inner cavity of the sand and gravel screening device body (1). 3. A sand and gravel vibration screening device and sorting system according to claim 1, characterized in that: the vibration sorting system includes a driving member (12), and the driving member (12) is provided with two groups, and the two groups of driving members (12) are respectively fixedly installed on the upper surfaces of both ends of the T-shaped support plate (11), and the driving directions of the two groups of driving members (12) are opposite, and a linkage component (13) is fixedly connected to the output shaft of the driving member (12). 4. A sand and gravel vibration screening device and sorting system according to claim 3, characterized in that: the output end of the linkage assembly (13) is fixedly connected to a cam plate (14), and a movable shaft rod (15) is fixedly connected to the inner wall of one end of the cam plate (14), and the outer surface of the movable shaft rod (15) is provided with a movable vertical plate (16), and the inner surface of the movable vertical plate (16) is provided with a sliding groove for auxiliary limiting, and the inner surface of the sliding groove is movably connected to the outer surface of the movable shaft rod (15). 5. A sand and gravel vibration screening device and sorting system according to claim 4, characterized in that: the outer surface of the movable vertical plate (16) on one side away from the driving member (12) is fixedly connected to a limiting strip (161), and the limiting strip (161) is fixedly installed on the outer surface of the sand and gravel screening device body (1), and a movable groove is opened on the inner wall of the limiting strip (161), and a magnetic suction slider (162) is slidably connected to the inner surface of the movable groove. 6. A sand and gravel vibration screening device and sorting system according to claim 1, characterized in that: the vibration sorting system also includes a bottom connecting frame plate (10), the bottom connecting frame plate (10) is fixedly installed on the lower ends of the coarse sand screening plate (7), the medium sand screening plate (8) and the fine sand screening plate (9), the inner surface of the bottom connecting frame plate (10) is fixedly installed with a sliding rod (18), the other end of the sliding rod (18) is fixedly connected to a support block (17) fixedly connected to the lower surfaces of the coarse sand screening plate (7), the medium sand screening plate (8) and the fine sand screening plate (9), the inner side of the support block (17) is provided with a magnetic impact unit, the bottom connecting frame plate (10) is arranged in two groups, the bottom connecting frame plates (10) are symmetrically distributed about the central axis of the coarse sand screening plate (7), and the outer surface of the bottom connecting frame plate (10) is fixedly provided with a bottom auxiliary vibration unit. 7. A sand and gravel vibration screening device and sorting system according to claim 6, characterized in that: the magnetic impact unit includes a spiral telescopic spring bar (19) and a magnetic impact block (20), one end of the spiral telescopic spring bar (19) is fixedly connected to the outer surface of the support block (17), and the other end of the spiral telescopic spring bar (19) is fixedly connected to the outer surface of the magnetic impact block (20), the spiral telescopic spring bar (19) and the magnetic impact block (20) are respectively slidably connected to the outer surface of the sliding rod (18), and the magnetic impact block (20) is a trapezoidal truncated cone columnar structure as a whole. 8. A sand and gravel vibration screening device and sorting system according to claim 1, characterized in that: the upper knocking system includes an anti-collision cylinder (26), the inner wall of which is provided with a limiting groove (261), the lower end of the anti-collision cylinder (26) is fixedly connected to the upper surfaces of the lower angles of the coarse sand screening plate (7), the medium sand screening plate (8), and the fine sand screening plate (9), respectively, the upper inner surface of the anti-collision cylinder (26) is slidably connected to the outer surface of the piston rod at the output end of the electric telescopic rod (25), and the lower end of the piston rod at the output end of the electric telescopic rod (25) is provided with an automatic lifting and falling unit. 9. A sand and gravel vibration screening device and sorting system according to claim 8, characterized in that: the automatic lifting and falling unit includes a lifting cylinder (27), the lifting cylinder (27) is arranged in two groups, the two groups of lifting cylinders (27) are symmetrically distributed about the central axis of the anti-collision cylinder (26), the upper end of the lifting cylinder (27) is fixedly connected to the lower end of the piston rod, and the outer surface of the lifting cylinder (27) is slidably connected to the inner wall of the anti-collision cylinder (26), the inner side of the lifting cylinder (27) is movably connected with a grab arm (28), the grab arm (28) is respectively rotatably connected to the inner wall of the lifting cylinder (27), the grab arm (28) is arranged in two groups, the grab arm (28) is distributed in a mirror image with respect to the piston rod, the upper end outer surface of the grab arm (28) is movably abutted against the inner wall of the fitting groove (262) preset at the upper end of the anti-collision cylinder (26), and the inner side of the grab arm (28) is provided with an elastic clamping unit.