CN113262976B

CN113262976B - Vibrating screen

Info

Publication number: CN113262976B
Application number: CN202110649220.7A
Authority: CN
Inventors: 刘小平; 李学时; 郭克文; 文斌; 张泉波
Original assignee: Hunan Yuhuan Precision Manufacturing Co ltd
Current assignee: Hunan Yuhuan Precision Manufacturing Co ltd
Priority date: 2021-06-10
Filing date: 2021-06-10
Publication date: 2022-04-22
Anticipated expiration: 2041-06-10
Also published as: CN113262976A

Abstract

The invention discloses a vibrating screen, which comprises: a vibrating screen box body; the vibrating screen comprises a vibrating screen box, a plurality of screen plates, a plurality of vibrating screen box bodies, a plurality of vibrating screen plates and a plurality of vibrating screen plates, wherein the plurality of screen plates are arranged in the vibrating screen box body; the sieve plate opening and closing mechanism is connected with the sieve plate to drive the sieve plate to rotate and open or combine the sieve plate into a sieve pore. This shale shaker can carry out automatic clearance to the sieve mesh, does not need artifical clearance, can shorten screening time, improves screening efficiency, can work continuously, satisfies automation line's requirement.

Description

Vibrating screen

Technical Field

The invention relates to the technical field of environment-friendly screening and classification, in particular to a vibrating screen used for screening broken iron scraps.

Background

With the increasing emphasis on environmental protection, people want to change waste into valuable. Such as scrap iron. However, the value of different scrap iron pieces is evaluated. Therefore, the sample is taken first to obtain various index data such as the components, the particle sizes and the like. An important link for realizing the process is to sieve the scrap steel and the scrap iron.

For screening scrap iron, there are manual screens, and there are also machine-powered vibrating screens, such as reciprocating vibrating screens, rotary drum vibrating screens, or vibrating screens with vibrators. Due to the large difference in the components and shapes of the objects to be screened, the objects often block the screen holes or are not hung in the screen holes (in terms of shapes). If the situation occurs, the sieve holes can be cleaned manually by a manual sieve, but the labor intensity is high; with machine screens, it is also quite difficult to clean the screen openings, often requiring shut-down to open the screened screen panels for manual cleaning.

In the screening of scrap iron and steel, the scrap iron and steel has large difference in components and shapes, and is in a block shape, a granule shape and a slender strip shape. The long and thin strip-shaped (waste iron wires) enter the sieve pores, are easy to hang in the sieve pores and cannot fall down, and are clamped in the sieve pores, so that the screening efficiency is influenced. The current cleaning is one by one manual cleaning, the work is quite complex, continuous work cannot be carried out, and obviously, the cleaning device cannot adapt to continuous, efficient and automatic unattended working environment.

Disclosure of Invention

The invention mainly aims to provide a vibrating screen, which aims to solve the technical problems that oversize materials of the existing vibrating screen are easily hung in screen holes, the screening efficiency is influenced, and the cleaning is difficult.

In order to achieve the above object, the present invention provides a vibrating screen comprising:

a vibrating screen box body;

the vibrating screen comprises a vibrating screen box, a plurality of screen plates, a plurality of vibrating screen box bodies, a plurality of vibrating screen plates and a plurality of vibrating screen plates, wherein the plurality of screen plates are arranged in the vibrating screen box body;

the sieve plate opening and closing mechanism is connected with the sieve plate to drive the sieve plate to rotate and open or combine the sieve plate into a sieve pore.

Further, sieve mechanism that opens and shuts includes:

the sieve plate opening and closing motor is fixedly arranged on the vibrating sieve box body;

the sieve plate opening and closing eccentric wheel is arranged on a rotating shaft of the sieve plate opening and closing motor;

the connecting rod is hinged with the sieve plate opening and closing eccentric wheel;

the sieve plate rotating shifting block is arranged at the end part of the sieve plate and is hinged with the connecting rod.

Furthermore, the sieve mechanism that opens and shuts still includes a connecting rod push pedal, and the connecting rod push pedal is articulated to be installed on the sieve eccentric wheel that opens and shuts, and every sieve all is articulated with the connecting rod push pedal through a rotatory shifting block of sieve and a connecting rod, and the shale shaker box is gone up along vertical being equipped with the guide rail, and the connecting rod push pedal slides and sets up on the guide rail.

Furthermore, the vibrating screen box body turnover mechanism is used for driving the vibrating screen box body to turn left and right.

Further, the box turnover mechanism comprises:

the bottom of the vibrating screen box body is hinged and arranged on the overturning support lug;

the turnover driving motor is arranged on the turnover mechanism mounting plate;

the overturning eccentric wheel is hinged to a rotating shaft of the overturning driving motor;

the overturning slide block is hinged on the overturning eccentric wheel;

and one end of the turnover connecting rod is hinged with the turnover sliding block, and the other end of the turnover connecting rod is hinged with the bottom of the vibrating screen box body.

Furthermore, the vibrating screen further comprises a box body reciprocating swing mechanism for driving the vibrating screen box body to swing left and right.

Further, the box reciprocating swing mechanism comprises:

a base plate;

the turnover mechanism mounting plate is slidably mounted on the guide device;

and the swinging driving motor is arranged on the bottom plate and is connected with the turnover mechanism mounting plate through a transmission mechanism to drive the turnover mechanism mounting plate to swing back and forth on the guide device.

Further, the transmission mechanism includes:

the driving chain wheel is arranged on a rotating shaft of the swing driving motor;

the driven chain wheel is rotatably arranged on the bottom plate and is connected with the driving chain wheel through a chain;

and one end of the crank is hinged to the driven chain wheel, and the other end of the crank is hinged to the turnover mechanism mounting plate.

Furthermore, a movable door plate is arranged on one side of the vibrating screen box body, and a door plate opening and closing mechanism for opening or closing the movable door plate is arranged on the vibrating screen box body.

Furthermore, the vibrating screen box is internally provided with a plurality of layers of sieve plates from top to bottom, each layer of sieve plate is provided with a set of sieve plate opening and closing mechanism, and the side surface of the vibrating screen box corresponding to each layer of sieve plate is provided with a movable door plate and a set of door plate opening and closing mechanism.

By applying the technical scheme of the invention, a plurality of sieve plates are rotatably arranged in the vibrating sieve box body, half holes are formed in the side surfaces of the sieve plates, the half holes in adjacent sieve plates are combined to form sieve holes, and the sieve plates are driven to rotate by the sieve plate opening and closing mechanism to open or combine the sieve holes; when the sieve plate is in a closed state, oversize materials can only fall through the sieve holes, and the sieve plate is similar to the sieving condition of a common sieve; if there is the material to hang in the sieve mesh or when blockking up the sieve mesh, open and shut mechanism drive sieve through the sieve and rotate, make two half holes of constituteing the sieve mesh open, the material in the sieve mesh can drop. This shale shaker hangs in the sieve mesh or when blockking up the sieve mesh when long and thin strip material, can conveniently, clear up the sieve mesh effectively, need not the manual work and clears up, can improve screening efficiency.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a perspective view of a shaker screen according to an embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view of a shaker screen according to an embodiment of the present invention.

FIG. 3 is a schematic illustration of a closed position of a screen deck in a shaker in accordance with an embodiment of the present invention.

Fig. 4 is a partially enlarged view of a portion a in fig. 3.

Fig. 5 is a schematic view of an opened state of a screen plate in a vibrating screen according to an embodiment of the present invention.

Fig. 6 is a partially enlarged view of fig. 5 at B.

Fig. 7 is a schematic connection diagram of a screen plate opening and closing mechanism and a screen plate in the vibrating screen according to the embodiment of the invention.

Fig. 8 is a schematic view of a shaker of an embodiment of the present invention tilted to the left with the door open.

Fig. 9 is a schematic view of the vibrating screen of the embodiment of the present invention tilted to the right and closed.

Fig. 10 is a schematic cross-sectional view of another side of a shaker screen according to an embodiment of the present invention.

Wherein the figures include the following reference numerals:

1. a vibrating screen box body; 2. a sieve plate; 3. a sieve plate opening and closing mechanism; 4. the box body is turned over; 5. a box body reciprocating swing mechanism; 6. a movable door panel; 7. a door panel opening and closing mechanism; 11. a guide rail; 21. half-hole; 31. a sieve plate opening and closing motor; 32. the sieve plate is provided with an opening and closing eccentric wheel; 33. a connecting rod; 34. the sieve plate rotates the shifting block; 35. a connecting rod push plate; 41. a turnover mechanism mounting plate; 42. turning over a driving motor; 43. turning over the eccentric wheel; 44. turning over the sliding block; 45. turning over the connecting rod; 51. a base plate; 52. a guide device; 53. a swing drive motor; 54. a transmission mechanism; 71. an electric push rod; 72. a door plate opening and closing connecting rod; 411. turning over the support lug; 541. a drive sprocket; 542. a driven sprocket; 543. a crank; 544. and a chain.

Detailed Description

In order to facilitate an understanding of the invention, the invention will be described more fully and in detail below with reference to the accompanying drawings and preferred embodiments, but the scope of the invention is not limited to the specific embodiments below. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The use of "first," "second," and similar terms in the description and in the claims of the present application do not denote any order, quantity, or importance, but rather the intention is to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.

Referring to fig. 1 to 10, a vibrating screen according to an embodiment of the present invention is mainly used for screening scrap iron, and other materials. As can be seen from the figure, the vibrating screen mainly comprises a vibrating screen box body 1, a plurality of screen plates 2 and a screen plate opening and closing mechanism 3. The vibrating screen comprises a vibrating screen box body 1, a plurality of screen plates 2, a plurality of screen plates and a plurality of screen plates, wherein the plurality of screen plates 2 are arranged in the vibrating screen box body 1 side by side, two ends of each screen plate 2 are rotatably connected with the vibrating screen box body 1, a plurality of half holes 21 are formed in the side surface of each screen plate 2, the half holes 21 are communicated with the outside of each screen plate 2, and two half holes 21 which are opposite to each other in position on two adjacent screen plates 2 are combined to form a screen hole (such as a round hole or a square hole); the sieve plate opening and closing mechanism 3 is connected with the sieve plate 2 and used for driving the sieve plate 2 to rotate, so that sieve holes are opened or combined.

According to the vibrating screen, the plurality of screen plates 2 are rotatably arranged in the vibrating screen box body 1, the side surfaces of the screen plates 2 are provided with the half holes 21, the half holes on the adjacent screen plates 2 are combined to form the screen holes, and the screen plates 2 are driven to rotate through the screen plate opening and closing mechanism 3 so as to be opened or combined into the screen holes; when the sieve plate 2 is in a closed state, oversize materials can only fall through sieve holes, and the sieve plate 2 is similar to the sieving condition of a common sieve at the moment; if there is the material (like slender rectangular iron wire) to hang in the sieve mesh or when blockking up the sieve mesh, open and shut 3 drive sieve 2 rotations of mechanism through the sieve, make two half holes 21 of constituteing the sieve mesh open, the material in the sieve mesh can drop. This shale shaker hangs in the sieve mesh or when blockking up the sieve mesh when long and thin strip material, can conveniently, clear up the sieve mesh effectively, need not the manual work and clears up, reduces artifical intensity of labour, improves screening efficiency.

Specifically, referring to fig. 1 to 7, in the present embodiment, the sieve plate opening and closing mechanism 3 mainly includes a sieve plate opening and closing motor 31, a sieve plate opening and closing eccentric wheel 32, a connecting rod 33, and a sieve plate rotation dial 34. Wherein, the sieve plate opening and closing motor 31 is fixedly arranged on the vibrating sieve box body 1; the sieve plate opening and closing eccentric wheel 32 is arranged on a rotating shaft of the sieve plate opening and closing motor 31; the connecting rod 33 is hinged (indirectly hinged) with the sieve plate opening and closing eccentric wheel 32; the sieve plate rotating shifting block 34 is fixedly arranged at the end part of the sieve plate 2, and the sieve plate rotating shifting block 34 is hinged with the connecting rod 33. Specifically, the sieve plate opening and closing eccentric wheel 32 is positioned below the sieve plate rotating shifting block 34, the upper end of the connecting rod 33 is hinged with the sieve plate rotating shifting block 34, and the lower end of the connecting rod 33 is hinged with the sieve plate opening and closing eccentric wheel 32.

So set up, when the sieve mesh is opened to needs, open and shut motor 31 drive sieve eccentric wheel 32 through the sieve and rotate, drive connecting rod 33 and upwards remove for the rotatory shifting block 34 of sieve that links to each other with connecting rod 33 rotates around 2 center pins of sieve, drives sieve 2 and rotates together, thereby makes two half holes 21 on two adjacent sieve 2 part, opens the sieve mesh, hangs or the material of jam in the sieve mesh can fall down. After the clearance finishes, open and shut the eccentric wheel 32 rotation through sieve motor 31 drive sieve board through the sieve, drive connecting rod 33 downstream, and then drive sieve 2 antiport, make two half holes 21 on two adjacent sieve 2 combine together to form the sieve mesh, can continue to sieve the material.

Further, in this embodiment, the sieve plate opening and closing mechanism 3 further includes a connecting rod pushing plate 35, the connecting rod pushing plate 35 is hinged to the sieve plate opening and closing eccentric wheel 32, and each sieve plate 2 is hinged to the connecting rod pushing plate 35 through a sieve plate rotating shifting block 34 and a connecting rod 33; a guide rail 11 is vertically arranged on the vibrating screen box body 1, and a connecting rod push plate 35 is arranged on the guide rail 11 in a sliding manner. Set up like this, it is articulated with a connecting rod push pedal 35 with connecting rod 33 on the polylith sieve 2 jointly, can only set up a sieve and open and shut motor 31 drive a connecting rod push pedal 35 and reciprocate, can drive polylith sieve 2 and rotate together, realize polylith sieve 2 pivoted synchronization.

Referring to fig. 2 and 8 to 10, in the present embodiment, the vibrating screen further includes a box turnover mechanism 4, and the box turnover mechanism 4 is used for driving the vibrating screen box 1 to turn left and right, so as to further improve the screening efficiency and shorten the screening time. Specifically, the box overturning mechanism 4 comprises an overturning mechanism mounting plate 41, an overturning driving motor 42, an overturning eccentric wheel 43, an overturning slide block 44 and an overturning connecting rod 45. Wherein, the turnover mechanism mounting plate 41 is provided with a turnover support lug 411, and the bottom of the vibrating screen box body 1 is hinged on the turnover support lug 411; the turnover driving motor 42 is fixedly arranged on the turnover mechanism mounting plate 41; the overturning eccentric wheel 43 is hinged on a rotating shaft of the overturning driving motor 42; the overturning slide block 44 is hinged on the overturning eccentric wheel 43; one end of the turning connecting rod 45 is hinged with the turning sliding block 44, and the other end of the turning connecting rod 45 is hinged with the bottom of the vibrating screen box body 1.

So set up, under the drive of upset driving motor 42, promote the horizontal migration of upset slider 44 through upset eccentric wheel 43 to drive the swing of upset connecting rod 45, realize shale shaker box 1 around the rotation of upset journal stirrup 411, reach the purpose of upset. At this time, the screened material moves reversely towards the other end in the vibrating screen box body 1 under the action of gravity. When the material reaches the other end, the turnover driving motor 42 drives again to make the vibrating screen box body 1 rotate reversely around the turnover support lug 411. So relapse, the thing of being sieved accelerates in shale shaker box 1 and produces the even flow, prevents to be piled up in dead angle department to reach and reduce the screening time, improve the mesh of screening efficiency.

In order to further improve the material screening efficiency and shorten the screening time, referring to fig. 1, fig. 2 and fig. 8 to fig. 10, in the present embodiment, the vibrating screen further comprises a box reciprocating swing mechanism 5, and the box reciprocating swing mechanism 5 is used for driving the vibrating screen box 1 to swing left and right. Specifically, the box body reciprocating swing mechanism 5 includes a bottom plate 51, a guide 52, a swing drive motor 53, and a transmission mechanism 54. Wherein, the guiding device 52 is fixedly arranged on the bottom plate 51, and the turnover mechanism mounting plate 41 is slidably arranged on the guiding device 52; a swing driving motor 53 is installed on the base plate 51, and the swing driving motor 53 is connected to the turnover mechanism mounting plate 41 through a transmission mechanism 54 to drive the turnover mechanism mounting plate 41 to swing back and forth on the guide 52.

When the material to be screened is poured into the vibrating screen box 1, the swing driving motor 53 is turned on, and the turnover mechanism mounting plate 41 and the vibrating screen box 1 are driven to reciprocate on the guide device 52 together by the transmission mechanism 54. Thereby make the thing of being sieved in the shale shaker box 1 also produce and rock about rocking, make the thing of being sieved accelerate in the shale shaker box 1 and produce the even flow, prevent to be piled up in the dead angle department of shale shaker box 1 by the thing of sieving to reach further reduction screening time, improve the mesh of screening efficiency.

Specifically, referring to fig. 1, 2, and 10, the transmission mechanism 54 includes a drive sprocket 541, a driven sprocket 542, a crank 543, and a chain 544. Wherein, the driving sprocket 541 is installed on the rotating shaft of the swing driving motor 53; a driven sprocket 542 rotatably mounted on the base plate 51, the driven sprocket 542 being connected to the driving sprocket 541 by a chain 544; one end of the crank 543 is hinge-mounted on the driven sprocket 542, and the other end thereof is hinge-mounted to the turnover mechanism mounting plate 41. In this way, the swing driving motor 53 drives the driving sprocket 541 to rotate, the chain 544 drives the driven sprocket 542 to rotate, and the crank 543 drives the turnover mechanism mounting plate 41 and the vibrating screen box 1 to reciprocate on the guide device 52.

Referring to fig. 1, 2 and 8 to 10, in the present embodiment, a movable door panel 6 is further disposed on one side of the vibrating screen box 1, and a door panel opening and closing mechanism 7 for opening or closing the movable door panel 6 is disposed on the vibrating screen box 1. The movable door plate 6 is in a closed state when the vibrating screen screens materials, and after the materials in a batch are screened, the movable door plate 6 is opened through the door plate opening and closing mechanism 7, so that oversize materials can be guided into the hopper.

Specifically, the lower side of the movable door panel 6 is hinged to one side of the vibrating screen box 1 through a door hinge, the door panel opening and closing mechanism 7 comprises an electric push rod 71, the electric push rod 71 is hinged to a door panel opening and closing connecting rod 72, and the other end of the door panel opening and closing connecting rod 72 is hinged to the movable door panel 6; the electric push rod 71 extends and retracts, and the movable door panel 6 is driven to open or close through the door panel opening and closing connecting rod 72. It should be noted that, the driving mechanism in the door opening and closing mechanism 7 may be other driving mechanisms, such as an air cylinder, besides the electric push rod 71.

Referring to fig. 1, fig. 2 and fig. 8 to fig. 10, in this embodiment, a plurality of layers of sieve plates 2 are arranged in a vibrating sieve box 1 from top to bottom, each layer of sieve plate 2 includes a plurality of sieve plates 2 arranged side by side, each layer of sieve plate 2 is equipped with a set of sieve plate opening and closing mechanism 3, and a movable door plate 6 and a set of door plate opening and closing mechanism 7 are arranged on the side surface of the vibrating sieve box 1 corresponding to each layer of sieve plate 2. By the arrangement, the screened objects can be screened in multiple stages. Specifically, the sizes of the mesh openings on the sieve plates 2 of different layers can be set according to actual needs.

The working principle of the vibrating screen is as follows:

pouring the screened materials into a vibrating screen box body 1 (at the moment, a half hole 21 on a screen plate 2 is closed, and a movable door plate 6 is closed); the swing driving motor 53 is started, and under the driving of the swing driving motor 53, the crank 543 is driven to move through the transmission of the chain 544, the driving sprocket 541 and the driven sprocket 542, so that the part above the turnover mechanism mounting plate 41 reciprocates along the guide device 52, and the screened objects in the vibrating screen box 1 also shake.

After the set swing screening time is reached (the screened object is estimated to move to one end in the vibrating screen box body 1), the overturning driving motor 42 is started, the overturning eccentric wheel 43 pushes the overturning slide block 44 to move leftwards (or rightwards) under the driving of the overturning driving motor 42, so that the overturning connecting rod 45 is driven to swing, the vibrating screen box body 1 rotates around the overturning support lug 411, the overturning purpose is achieved, and the screened object can reversely move towards the other end in the vibrating screen box body 1 under the action of gravity.

When the material reaches the other end, the turnover driving motor 42 drives again to make the vibrating screen box 1 rotate reversely around the turnover support lug 411. So relapse, the thing of being sieved accelerates to produce even flow in shale shaker box 1, prevents that the thing of being sieved from piling up in dead angle department to reach the purpose that shortens screening time, improves screening efficiency.

After the batch of screened objects are screened, the electric push rod 71 drives the door plate opening and closing connecting rod 72 to act, so that the movable door plate 6 rotates around the door hinge, and the movable door plate 6 is opened (at the moment, the hopper is externally connected). The oversize materials at each stage enter the hopper along the movable door plate 6 (the movable door plate 6 can be designed into a material guide plate). After the unloading is finished, the sieve plate opening and closing eccentric wheel 32 is driven to rotate by the sieve plate opening and closing motor 31, so that the connecting rod push plate 35 moves upwards, the connecting rod 33 connected with the connecting rod moves upwards, the sieve plate rotating shifting block 34 connected with the connecting rod 33 rotates around the central shaft of the sieve plate 2, and the sieve plate 2 is driven to rotate together.

The half holes 21 (circular holes or square holes) on the screen plate 2 are opened by the rotation of the screen plate 2, so that objects hung in the screen holes fall down (or the blocking objects fall down). To ensure that the screen holes are thoroughly cleaned of hung objects (or blockages), the action of closing and opening the screen deck 2 can be repeated, and then the screen deck is returned to the closed state. Finally, under the action of the door plate opening and closing mechanism 7, the movable door plate 6 moves reversely to close the door. Then, the next batch of screened objects is screened, and so on, the continuous work can be realized without manual watching.

Generally speaking, the vibrating screen can realize the functions of screening, overturning, swinging and the like. Particularly, the sieve holes of the sieve plate 2 can be automatically cleaned without manual cleaning, or slender screened objects which are hung in the sieve holes and cannot fall down can be removed without blocking the sieve holes. The vibrating screen is turned leftwards and rightwards and swings in a reciprocating mode in the left and right directions, so that the screened objects are accelerated in the vibrating screen box body 1 to flow uniformly, the screened objects are prevented from being accumulated at dead corners, and the purposes of reducing screening time and improving screening efficiency are achieved. The vibrating screen can realize continuous automatic screening. When the screening of a batch of screened materials is finished, the movable door plate 6 is opened, and the screened materials can automatically flow into the hopper matched with the movable door plate. Then the screened material can be continuously fed. The sieve mesh does not need to be cleaned manually, and the device can work continuously, thereby achieving the purposes of improving the efficiency and meeting the requirements of an automatic production line.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A shaker screen, comprising:

a vibrating screen box body (1);

the vibrating screen comprises a plurality of screen plates (2) which are arranged in a vibrating screen box body (1), wherein two ends of each screen plate (2) are rotatably connected with the vibrating screen box body (1), half holes (21) are formed in the side surfaces of the screen plates (2), and the half holes (21) which are opposite on two adjacent screen plates (2) are combined to form screen holes;

the sieve plate opening and closing mechanism (3) is connected with the sieve plate (2) to drive the sieve plate (2) to rotate, open or combine the sieve holes;

the sieve plate opening and closing mechanism (3) comprises:

the sieve plate opening and closing motor (31) is fixedly arranged on the vibrating sieve box body (1);

the sieve plate opening and closing eccentric wheel (32) is arranged on a rotating shaft of the sieve plate opening and closing motor (31);

the connecting rod (33), the said connecting rod (33) and the said sieve plate open and shut the eccentric wheel (32) to hinge;

the sieve plate rotating shifting block (34) is arranged at the end part of the sieve plate (2), and the sieve plate rotating shifting block (34) is hinged with the connecting rod (33);

sieve mechanism (3) that opens and shuts still includes a connecting rod push pedal (35), connecting rod push pedal (35) are articulated to be installed on sieve eccentric wheel (32) that opens and shuts, every sieve (2) all through one rotatory shifting block of sieve (34) and one connecting rod (33) with connecting rod push pedal (35) are articulated, vertical guide rail (11) that are equipped with is gone up along in shale shaker box (1), connecting rod push pedal (35) slide to be set up on guide rail (11).

2. The vibrating screen of claim 1, further comprising a box turnover mechanism (4) for driving the vibrating screen box (1) to turn left and right.

3. The vibrating screen according to claim 2, characterised in that the box-turning mechanism (4) comprises:

the vibrating screen box body is characterized by comprising a turnover mechanism mounting plate (41), wherein a turnover support lug (411) is arranged on the turnover mechanism mounting plate (41), and the bottom of the vibrating screen box body (1) is hinged to the turnover support lug (411);

the turnover driving motor (42) is arranged on the turnover mechanism mounting plate (41);

the overturning eccentric wheel (43) is hinged to a rotating shaft of the overturning driving motor (42);

the overturning slide block (44) is hinged to the overturning eccentric wheel (43);

the vibrating screen box comprises a turnover connecting rod (45), one end of the turnover connecting rod (45) is hinged to a turnover sliding block (44), and the other end of the turnover connecting rod (45) is hinged to the bottom of the vibrating screen box body (1).

4. A vibrating screen according to claim 3, characterised by further comprising a box reciprocating swing mechanism (5) for driving the vibrating screen box (1) to swing side to side.

5. The vibrating screen of claim 4, characterised in that the box reciprocating oscillating mechanism (5) comprises:

a base plate (51);

the guide device (52) is fixedly arranged on the bottom plate (51), and the turnover mechanism mounting plate (41) is slidably arranged on the guide device (52);

and the swinging driving motor (53) is installed on the bottom plate (51), and the swinging driving motor (53) is connected with the turnover mechanism mounting plate (41) through a transmission mechanism (54) and drives the turnover mechanism mounting plate (41) to swing left and right on the guide device (52).

6. The vibrating screen of claim 5, wherein the transmission mechanism (54) includes:

a driving sprocket (541) mounted on a rotating shaft of the swing driving motor (53);

a driven sprocket (542) rotatably mounted on the base plate (51), the driven sprocket (542) being connected to the driving sprocket (541) by a chain (544);

and one end of the crank (543) is hinged to the driven chain wheel (542), and the other end of the crank (543) is hinged to the turnover mechanism mounting plate (41).

7. The vibrating screen according to any one of claims 1 to 6, wherein a movable door panel (6) is arranged on one side of the vibrating screen box body (1), and a door panel opening and closing mechanism (7) for opening or closing the movable door panel (6) is arranged on the vibrating screen box body (1).

8. The vibrating screen according to claim 7, wherein a plurality of layers of the screen plates (2) are arranged in the vibrating screen box body (1) from top to bottom, each layer of the screen plates (2) is provided with one set of the screen plate opening and closing mechanism (3), and one movable door plate (6) and one set of the door plate opening and closing mechanism (7) are arranged on the side surface of the vibrating screen box body (1) corresponding to each layer of the screen plates (2).