Anti-blocking vibrating screen

Abstract

The application discloses an anti-blocking vibrating screen which is used on a sand-stone separating machine and comprises a screen mesh structure arranged on a screen box. The screen mesh structure comprises a static screen mesh fixed on the screen box and a dynamic screen mesh rotatably connected to the screen box. A plurality of strip-shaped screen holes are formed by alternately arranging static screen strips of the static screen mesh and dynamic screen strips of the dynamic screen mesh. In normal working, the plurality of dynamic screen strips and the plurality of static screen strips are kept in a position flush, so that sand-stone materials pass through the strip-shaped screen holes for screening. If the strip-shaped screen holes are blocked, the dynamic screen mesh is only rotated to make the dynamic screen strips of the dynamic screen mesh and the static screen strips of the static screen mesh staggered by a certain angle. At this time, the strip-shaped screen holes are opened and removed, so that the sand-stone materials originally clamped in the gap fall from the frame of the static screen mesh. Then, the dynamic screen mesh is rotated back to the original position, and the cleaning and blocking work is completed. The application reduces the labor cost, improves the work efficiency and ensures the normal and reliable operation of the sand-stone separating machine.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vibrating screening equipment, in particular to a kind of anti-blocking vibrating screen. BACKGROUND

[0002] The vibrating sand-stone separator for washing tank truck of concrete mixing station is usually to make the material after dehydration through the upper vibrating screen, and the larger stones are discharged from the stone outlet under the vibration of the vibrating screen, while the sand and water are separated through the screen hole into the bottom of the spiral sand lifting machine. However, the material after washing contains a large amount of cement-containing slurry and residual sand and stone material, especially melon seed pieces, which are easy to block the screen hole, and because of the cement content, the screen hole is easily blocked over time, resulting in that the sand and slurry cannot be discharged through the screen hole in time, and a large amount of slurry is discharged from the stone outlet along with the stones, which not only cannot achieve the purpose of sand and water separation, but also pollutes the site.

[0003] At present, the method in the industry is to rely on manual cleaning, which requires special personnel to check frequently, and the screen hole is cleaned in time when it is blocked to a certain extent. However, the number of screen holes is hundreds or even thousands, and cleaning them one by one not only consumes a lot of manpower and time, but also affects the normal use of the equipment. SUMMARY

[0004] Therefore, the technical problem to be solved by the present application is to overcome the problem that the vibrating screen in the prior art relies on manual cleaning of the blocked screen hole, which not only consumes a lot of manpower and time, but also affects the normal use of the equipment.

[0005] To solve the above technical problems, the present application provides an anti-blocking vibrating screen, which comprises a screen box, a vibrating device arranged in the screen box and at least one screen structure, the screen structure comprising:

[0006] A static screen is fixed to the screen box, which comprises a plurality of static screen strips arranged in sequence and spaced along the length direction of the static screen;

[0007] A dynamic screen is rotatably connected to the screen box, which comprises a plurality of dynamic screen strips arranged alternately with the plurality of static screen strips, and a plurality of strip-shaped screen holes are formed by the plurality of dynamic screen strips and the plurality of static screen strips when they are flush with each other; the dynamic screen has a first state of driving the plurality of dynamic screen strips and the plurality of static screen strips to keep flush, and a second state of driving the plurality of dynamic screen strips and the plurality of static screen strips to rotate and offset by a certain angle.

[0008] In the above anti-blocking vibrating screen, the dynamic screen comprises a driving shaft rotatably connected to both sides of the screen box, and a plurality of dynamic screen strips are arranged on the driving shaft in the length direction of the driving shaft, and the extension direction of the dynamic screen strip is perpendicular to the extension direction of the driving shaft.

[0009] The anti-blocking vibrating screen, wherein the static screen mesh comprises a screen frame with a middle cavity, and a plurality of static screen strips are arranged in the screen frame in intervals and divide the middle cavity into a plurality of accommodation slots suitable for inserting a plurality of dynamic screen strips.

[0010] The anti-blocking vibrating screen, wherein the dynamic screen strips are integrally formed on the sleeve rod, and the sleeve rod is provided with a through hole through which the driving shaft passes; the static screen strip and the dynamic screen strip are in square or circular structure.

[0011] The anti-blocking vibrating screen, wherein the bottom surface of the screen box is provided with a plurality of mounting slots in intervals along the length direction, and a plurality of screen structures are arranged in the mounting slots; the static screen mesh of each screen structure is adapted to cover the mounting slot, and a connecting hole for connecting the driving shaft is arranged at both ends of the mounting slot; the driving shaft is connected to the screen box through a rotating structure.

[0012] The anti-blocking vibrating screen, wherein the rotating structure comprises a pair of bearing seats arranged on both sides of the screen box corresponding to each screen structure, and a pair of bearings arranged at both ends of the driving shaft, so that the both ends of the driving shaft are connected to the bearing seats through the bearings after passing through the connecting hole.

[0013] The anti-blocking vibrating screen, wherein the plurality of screen structures are connected through a connecting rod mechanism to form linkage cooperation, the connecting rod mechanism comprises a plurality of swing arms arranged on one end of the driving shaft of the plurality of screen structures in linkage, and a transmission rod extending along the arrangement direction of the plurality of screen structures to connect the plurality of swing arms, so that the plurality of swing arms are driven by the transmission rod to rotate the plurality of driving shafts in linkage.

[0014] The anti-blocking vibrating screen further comprises a driving device connected to the dynamic screen mesh or the connecting rod mechanism, and the driving device is a crank device, a motor device or a pneumatic cylinder device.

[0015] The anti-blocking vibrating screen, wherein a locking structure for locking the plurality of dynamic screen meshes in a first state is arranged between the connecting rod mechanism and the screen box, the locking structure comprises at least one locking plate arranged on the transmission rod, at least one locking hole arranged on the locking plate and the side wall of the screen box, and a locking piece inserted into the locking hole of the locking plate and the side wall of the screen box.

[0016] The anti-blocking vibrating screen, wherein the vibrating device is mounted on a fixed beam between the side walls of the screen box, a plurality of vibrating spring devices are arranged on both sides of the screen box, and the plurality of vibrating spring devices are arranged in pairs through a connecting rod, the vibrating spring device comprises a spring seat connected to the connecting rod, and a group of vibrating springs arranged at the bottom of the spring seat.

[0017] The above technical scheme of the present application has the following advantages compared with the prior art:

[0018] 1. In the anti-blocking vibrating screen provided by the present application, a screen structure is arranged on the screen box, the screen structure is composed of a static screen and a dynamic screen arranged relatively rotatably, a plurality of strip-shaped screen holes are formed by the static screen bars of the static screen and the dynamic screen bars of the dynamic screen arranged alternately, in normal operation, the plurality of dynamic screen bars and the plurality of static screen bars are kept in a position flush, so that the material is screened through the strip-shaped screen holes, the strip-shaped screen holes have a higher opening rate than traditional square holes and round holes, and have the advantage of high sand and water passing efficiency, once the strip-shaped screen holes are blocked, the dynamic screen is only rotated to make the dynamic screen bars of the dynamic screen and the static screen bars of the static screen staggered at a certain angle, at this time, the strip-shaped screen holes are opened to remove the blockage, so that the sand and stone materials originally stuck in the gap fall from the frame of the static screen, and then the dynamic screen is rotated back to the original position, thereby completing the cleaning work, which avoids the traditional manual cleaning of screen holes, reduces labor cost, improves work efficiency, ensures the normal and reliable operation of the sand and stone separator, and achieves the purpose of sand and water separation.

[0019] 2. In the anti-blocking vibrating screen provided by the present application, the static screen includes a screen frame having a middle cavity, the static screen bars are arranged in the screen frame at intervals and divide the middle cavity into a plurality of accommodation grooves, the plurality of dynamic screen bars are rotatably inserted into the plurality of accommodation grooves, so that the plurality of dynamic screen bars and the plurality of static screen bars are arranged alternately in the screen frame and form a plurality of strip-shaped screen holes when the dynamic screen bars and the static screen bars are kept flush, the strip-shaped screen holes can separate large sand and stone from sand and slurry, when some sand and stone materials containing cement components block the screen holes, the dynamic screen is only rotated to stagger the dynamic screen bars and the static screen bars at a certain angle, so that the accommodation grooves with a larger distance are exposed, and the sand and stone blocking materials fall from the screen frame, thereby completing the cleaning work.

[0020] 3. In the anti-blocking vibrating screen provided by the present application, a plurality of screen structures are connected through a connecting rod mechanism to form a linkage, the connecting rod mechanism can drive the plurality of dynamic screens to rotate synchronously in a manual or automatic manner, specifically, a plurality of swing arms are arranged on the driving shafts of the plurality of dynamic screens, and a transmission rod sequentially connects the plurality of swing arms, the transmission rod drives the plurality of swing arms to rotate when moving, and the plurality of swing arms drive the plurality of dynamic screens to rotate relative to the static screen, so that the anti-blocking cleaning work of the plurality of screen structures can be completed at one time, the operation is simple and convenient, and the work efficiency is improved.

[0021] 4. The anti-blocking vibrating screen provided by the present application, the locking member is inserted into the locking hole arranged on the locking plate and the side wall of the screen box, so that the locking member plays a limiting and locking role on the transmission rod, thereby limiting the position rotation of the movable screen mesh, and the movable screen mesh is in the first state, and the plurality of movable screen bars of the movable screen mesh and the plurality of static screen bars of the static screen mesh are kept flush. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings required to be used in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application, and all other embodiments obtained by those skilled in the art without creative labor based on the embodiments in the present application also belong to the protection scope of the present application.

[0023] Figure 1 It is a perspective structural schematic view of the anti-blocking vibrating screen of the present application.

[0024] Figure 2 It is a side view schematic view of the anti-blocking vibrating screen of the present application, and the locking structure is particularly shown.

[0025] Figure 3 It is a perspective structural schematic view of the anti-blocking vibrating screen of the present application. Figure 2 It is a sectional structural schematic view along the line A-A.

[0026] Figure 4 It is a mounting structural schematic view of the plurality of screen mesh structures of the present application.

[0027] Figure 5 It is a planar structural schematic view of the screen mesh structure of the present application.

[0028] Figure 6 It is a split structural schematic view of the screen mesh structure of the present application.

[0029] Explanation of reference signs: 1, screen box; 11, channel steel; 2, static screen mesh; 21, static screen bar; 22, screen frame; 3, movable screen mesh; 31, movable screen bar; 32, driving rotating shaft; 33, sleeve rod; 4, bearing seat; 41, bearing; 5, swing arm; 6, transmission rod; 71, locking plate; 72, locking hole; 8, vibrating device; 9, vibrating spring device; 91, spring seat; 92, vibrating spring; 93, connecting rod; a, screen mesh structure. DETAILED DESCRIPTION

[0030] The technical solutions of the present application will be described below in combination with the drawings, obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor also belong to the protection scope of the present application.

[0031] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] Embodiment

[0034] The present embodiment provides an anti-blocking vibrating screen as shown in Figures 1-6 The anti-blocking vibrating screen is used for a sand separator, which comprises a screen box 1, a vibrating device 8 arranged on the screen box 1, and at least one screen structure a, the screen structure comprising:

[0035] A static screen 2 is fixed on the screen box 1, which comprises a plurality of static screen bars 21 arranged in sequence and at intervals along the length direction of the static screen 2.

[0036] A dynamic screen 3 is rotatably connected to the screen box 1, which comprises a plurality of dynamic screen bars 31 arranged alternately with the plurality of static screen bars 21, and a plurality of strip-shaped screen holes formed by the plurality of dynamic screen bars 31 and the plurality of static screen bars 21 when they are flush with each other; the dynamic screen 3 has a first state of driving the plurality of dynamic screen bars 31 and the plurality of static screen bars 21 to keep flush, and a second state of driving the plurality of dynamic screen bars 31 and the plurality of static screen bars 21 to rotate and misalign by a certain angle.

[0037] The above embodiment is the core technical scheme of the present embodiment. According to the screen structure a, the static screen 2 and the dynamic screen 3 which can be relatively rotated are composed, and a plurality of strip-shaped screen holes are formed by the static screen strips 21 of the static screen 2 and the dynamic screen strips 31 of the dynamic screen 3 alternately arranged. In normal operation, the plurality of dynamic screen strips 31 and the plurality of static screen strips 21 are kept in the same position, so that the material is screened through the strip-shaped screen hole. The strip-shaped screen hole has the advantages of high opening rate and high sand and water passing efficiency. Once the strip-shaped screen hole is blocked, the dynamic screen 3 is only rotated, the dynamic screen strip 31 of the dynamic screen 3 and the static screen strip 21 of the static screen 2 are staggered at a certain angle, the strip-shaped screen hole is opened and removed at this time, the sand and stone material originally stuck in the gap falls from the frame of the static screen, and then the dynamic screen is rotated back to the original position, that is, the cleaning and blocking work is completed. In this way, the traditional manual cleaning of the screen hole is avoided, the labor cost is reduced, the work efficiency is improved, the normal and reliable operation of the sand and stone separator is ensured, and the purpose of sand and water separation is achieved.

[0038] The specific setting mode of the dynamic screen and the static screen will be described in detail below. Figures 3-6 The specific setting mode of the dynamic screen and the static screen will be described in detail below.

[0039] The dynamic screen 3 includes a driving shaft 32 rotatably connected to both sides of the screen box 1. A plurality of dynamic screen strips 31 are arranged on the driving shaft 32 along the length direction of the driving shaft 32. The extension direction of the dynamic screen strip 31 is perpendicular to the extension direction of the driving shaft 32. The plurality of dynamic screen strips 31 are integrally formed on a sleeve rod 33. The sleeve rod 33 is provided with a through hole through which the driving shaft 32 passes. The sleeve rod 33 drives the plurality of dynamic screen strips 31 to be fixedly sleeved on the driving shaft 32 to form the dynamic screen 3. The structure is simple and convenient to assemble.

[0040] Further preferably, the static screen 2 includes a screen frame 22 having a middle cavity. A plurality of static screen strips are arranged in the screen frame 22 and divide the middle cavity into a plurality of accommodation grooves suitable for inserting the plurality of dynamic screen strips. The static screen strip 21 and the dynamic screen strip 31 are in square or circular structure. When the dynamic screen 3 rotates, the plurality of dynamic screen strips 31 are inserted into the plurality of accommodation grooves. The plurality of dynamic screen strips and the plurality of static screen strips 21 are alternately arranged in the screen frame 22. When the dynamic screen strip 31 and the static screen strip 21 are kept flush, a plurality of strip-shaped screen holes are formed. The strip-shaped screen hole can separate the gravel, sand and slurry. When some sand and stone materials containing cement components block the screen hole, the dynamic screen 3 is only rotated. After the dynamic screen strip 31 and the static screen strip 21 are staggered at a certain angle, the accommodation groove with a larger distance is exposed. The sand and stone blocking materials fall from the screen frame position to complete the blocking and cleaning work.

[0041] As Figure 1As shown, the bottom surface of the screen box 1 is provided with a plurality of installation grooves along the length direction, and a plurality of screen structures a are arranged in the installation grooves. Each screen structure is provided with a static screen 2 covering the installation groove, and a connecting hole is arranged at both ends of the installation groove for connecting the driving shaft 32. The driving shaft 32 is connected to the screen box 1 through a rotating structure. As a specific structure, the rotating structure includes a pair of bearing seats 4 arranged on both sides of the screen box 1 corresponding to each screen structure a, and a pair of bearings 41 arranged at both ends of the driving shaft 32. The two ends of the driving shaft 32 are connected to the bearing seats 4 through the bearings 41 after passing through the connecting holes. The dynamic screen 3 is connected to the screen box 1 through the bearings 41 in a rotating manner, so that the dynamic screen has the advantages of stable transmission, low noise, long service life and strong overload capacity.

[0042] According to the screen structure, a plurality of screen structures are arranged on the screen box 1, and the plurality of screen structures are connected through a connecting rod mechanism. Figures 1-3 As shown, the connecting rod mechanism includes a plurality of swing arms 5 arranged on one end of the driving shaft 32 of the plurality of screen structures, and a transmission rod 6 extending along the arrangement direction of the plurality of screen structures a and connecting the plurality of swing arms 5. When the transmission rod is driven, it moves back and forth along its length direction. According to this structure, the transmission rod 6 drives the plurality of swing arms 5 to rotate when moving, so that the plurality of swing arms are connected to drive the plurality of driving shafts to rotate under the driving of the transmission rod, and then drive the plurality of dynamic screens 3 to rotate relative to the static screen 2. In this way, the anti-blocking cleaning work of the plurality of screen structures can be completed at one time, which is simple and convenient to operate and improves the work efficiency.

[0043] The vibrating screen of the embodiment further includes a driving device connected to the dynamic screen 3. The driving device drives one of the dynamic screens 3 to rotate, and then drives the remaining dynamic screens 3 to rotate through the connecting rod mechanism. Alternatively, the driving device can be connected to the connecting rod structure, and the driving device drives the transmission rod of the connecting rod mechanism to move back and forth, and then drives the plurality of dynamic screens 3 to rotate through the plurality of swing arms. Both driving methods can realize the rotation operation of the dynamic screen 3. The driving device can be a crank device, so as to realize the manual cleaning operation of the plurality of screen structures. Obviously, the driving device can also be an electric mechanism such as a motor device or a pneumatic cylinder device, so as to realize the automatic cleaning operation of the plurality of screen structures. The vibrating screen designed in this way has manual and automatic operation modes when cleaning the blocked screen holes.

[0044] In order to prevent the movable screen 3 from being rotated by mistake when the vibrating screen is working normally, a locking structure for locking the plurality of movable screens 3 in the first state is arranged between the connecting rod mechanism and the screen box 1, the locking structure comprising at least one locking plate 71 arranged on the transmission rod 6, at least one locking hole 72 arranged on the locking plate 71 and the side wall of the screen box 1, and a locking member penetratingly connected to the locking plate 71 and the locking hole 72 of the side wall of the screen box 1, the locking member being preferably a bolt member or a screw member, and the locking hole 72 being a bolt hole matched with the bolt member or a screw hole matched with the screw member, wherein a plurality of channel steels 11 are arranged on the side wall of the screen box, and the locking hole 72 is arranged on the channel steel 11. The advantage of this design is that the locking member is penetratingly connected to the locking plate 71 and the locking hole 72 arranged on the side wall of the screen box 1, thereby limiting and locking the transmission rod 6, so as to limit the position rotation of the movable screen 3, and the movable screen 3 and the static screen 2 are in the first state, so as to ensure that the plurality of movable screen bars of the movable screen 3 are flush with the plurality of static screen bars of the static screen 2, thereby forming a plurality of flat strip-shaped screen holes.

[0045] As shown in Figure 1 One end of the screen box 1 is provided with an outlet, the vibrating device 8 can be installed on the side wall of the screen box or the fixed beam between the two side walls of the screen box, a plurality of vibrating spring devices 9 are arranged on the two sides of the screen box respectively, the vibrating spring device 9 comprises a spring seat 91 connected to the screen box through a connecting rod 93 and a vibrating spring 92 arranged between the spring seat 91 and the installation bottom plate, wherein the two vibrating spring devices 9 arranged on the two sides of the screen box can be connected and arranged through the connecting rod 93, the vibrating device 8 is a vibrating motor, one end of the screen box is provided with a stone outlet, and this vibrating screen uses the vibration of the vibrating motor as the vibration source, so that the sand and stone materials are thrown up on the plurality of screen meshes, move forward in a straight line and are discharged from the stone outlet, and the fine sand and slurry are screened through the strip-shaped screen holes and then fall into the spiral sand lifting machine at the bottom of the sand and stone separator to separate the sand and water.

[0046] Obviously, the above embodiments are only examples for clearly illustrating the present application, and are not intended to limit the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments cannot be exhausted, and the obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A clog-resistant vibrating screen for a sand separation machine, comprising a screen box (1) and a vibrating device (8) arranged in the screen box (1) and at least one screen structure (a), characterized in that, The screen structure comprises: A static screen (2) fixed to the screen box (1) comprises a plurality of static screen bars (21) arranged in sequence along the length direction of the static screen (2); A dynamic screen (3) rotatably connected to the screen box (1) comprises a plurality of dynamic screen bars (31) arranged alternately with the plurality of static screen bars (21), and a plurality of strip-shaped screen holes formed by the plurality of dynamic screen bars (31) and the plurality of static screen bars (21) when they are flush with each other; the dynamic screen (3) has a first state in which the plurality of dynamic screen bars (31) and the plurality of static screen bars (21) are kept flush, and a second state in which the plurality of dynamic screen bars (31) and the plurality of static screen bars (21) are rotated to be offset by a certain angle; The static screen (2) comprises a screen frame (22) having a middle cavity, and the plurality of static screen bars are arranged in the screen frame (22) and divide the middle cavity into a plurality of accommodation grooves suitable for the plurality of dynamic screen bars to be inserted; The dynamic screen (3) comprises a driving shaft (32) rotatably connected to both sides of the screen box (1), and the plurality of dynamic screen bars (31) are arranged on the driving shaft (32) along the length direction of the driving shaft (32); In the second state, the dynamic screen (3) is rotated to make the dynamic screen bars (31) and the static screen bars (21) be offset by a certain angle, so that the sand and gravel blockage falls from the screen frame (22) to complete the blockage cleaning work.

2. The anti-jamming shaker screen of claim 1, wherein, The extension direction of the dynamic screen bar (31) is perpendicular to the extension direction of the driving shaft (32).

3. The anti-jamming shaker screen of claim 2, wherein: The plurality of dynamic screen bars (31) are integrally formed on a sleeve rod (33), and the sleeve rod (33) is provided with a through hole through which the driving shaft (32) passes.

4. The anti-jamming shaker screen of any one of claims 1-3, wherein: The bottom surface of the screen box (1) is provided with a plurality of installation grooves along the length direction, and a plurality of screen structures (a) are arranged in the plurality of installation grooves; the static screen (2) of each screen structure is adapted to cover the installation groove, and a connecting hole for connecting the driving shaft (32) is arranged at both ends of the installation groove; the driving shaft (32) is connected to the screen box (1) through a rotating structure.

5. The anti-jamming shaker screen of claim 4, wherein: The rotating structure comprises a pair of bearing seats (4) arranged on both sides of the screen box (1) corresponding to each screen structure, and a pair of bearings (41) arranged at both ends of the driving shaft (32), so that the two ends of the driving shaft (32) pass through the connecting hole and are rotatably connected to the bearing seat (4) through the bearing (41).

6. The anti-jamming shaker screen of claim 5, wherein: The plurality of screen structures (a) are connected through a linkage mechanism, and the linkage mechanism comprises a plurality of swing arms (5) arranged in linkage on one end of the driving shaft (32) of the plurality of screen structures, and a transmission rod (6) extending along the arrangement direction of the plurality of screen structures (a) and connecting the plurality of swing arms (5), so that the plurality of swing arms (5) are linked to rotate the plurality of driving shafts under the driving of the transmission rod (6).

7. The anti-jamming shaker screen of claim 6, wherein: The driving device for connecting the dynamic screen (3) or the linkage mechanism is also provided, and the driving device is a crank device, a motor device or a pneumatic cylinder device.

8. A chokeless shaker according to claim 6 or 7, characterised in that: The connecting rod mechanism and the screen box (1) are provided with a locking structure for locking a plurality of moving screen meshes (3) in a first state, the locking structure comprising at least one locking plate (71) provided on the transmission rod (6), at least one locking hole (72) provided on the locking plate (71) and the side wall of the screen box (1), and a locking member inserted into the locking hole (72) of the locking plate (71) and the side wall of the screen box.

9. The anti-jamming shaker screen of claim 8, wherein: A plurality of vibration spring devices (9) are arranged on both sides of the screen box (1), wherein each vibration spring device (9) comprises a spring seat (91) connected to the screen box through a connecting rod (93), and a vibration spring (92) arranged between the spring seat (91) and a mounting bottom plate.

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