A disc spring buffered synchronous operation high-efficiency double-layer screen equipment

Abstract

The present invention belongs to the technical field of screening equipment, and is particularly a disc spring buffered synchronously operated high-efficiency double-layer screening equipment, comprising a frame, two frames are provided on the frame, a plurality of supporting mechanisms are connected between the frame and the frame, three stacked screening components are provided on the frame, a plurality of screening components are installed with a discharge hopper on the same side, and a plurality of discharge hoppers are staggered, the top screening component on the frame is fixedly connected to the frame by a plurality of adjustable self-locking buckles, two transmission mechanisms are provided on the frame, the two transmission mechanisms are respectively connected to the corresponding two frames, and the same linkage mechanism is connected between the two transmission mechanisms. The present invention can absorb and release energy by utilizing the buffering performance of the disc spring body, which helps to increase the movement amplitude of the frame, and can be operated at an ideal speed, which can not only improve production efficiency, but also extend the service life of moving parts.

Description

Technical Field

[0001] The invention relates to the technical field of screening equipment, and in particular to a disc spring buffered synchronously operated high-efficiency double-layer screening equipment. Background Art

[0002] In the material processing process, grading is a very important link; the screening effect mainly depends on the movement state of the material; some materials need upright movement to achieve the grading effect; if this requirement is not met, the screening rate will be significantly reduced; according to this requirement; the test shows that: assuming an eccentric sleeve with an eccentricity of 4 mm, the upper and lower amplitude of the screen body can be 6.5-7 mm when the spindle speed is 480 to 500 revolutions per minute; the front and rear amplitude is 8-8.5 mm, and the material feeding speed is 0.13 meters per second, which can meet the screening conditions; but the problem is that when the equipment runs for 800 hours under this parameter, the following phenomena will occur: rocker breakage, welding flange breakage, pull rod breakage, spindle breakage, etc.; at the same time, the upper and lower screens are required to run synchronously, otherwise polarization will occur, resulting in spring plate breakage and damage to the moving parts of the machine body; in view of these problems, the equipment failure rate is too high, which is unacceptable to users, and the productivity is low and the economic benefits are poor.

[0003] The main reasons are analyzed as follows: in the process of force transmission, the force is not transmitted in one direction, but a reverse force occurs; this causes alternating loads on the moving parts and fatigue fracture of the materials; at the same time, the movement relationship is complex, and the force needs to be transmitted multiple times before it can reach the screen body; although the inflection point is buffered by rubber sleeves, the effect is still not ideal and the desired result cannot be achieved. For this reason, in addition, when screening different materials, sieve plates with different mesh sizes are required. In order to avoid the need to frequently replace different sieve plates, a disc spring buffered, synchronously running, high-efficiency double-layer screening equipment is proposed. Summary of the invention

[0004] In order to solve the shortcomings in the prior art, the present invention proposes a disc spring buffered synchronously operated high-efficiency double-layer screen device.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a disc spring buffered synchronous operation high-efficiency double-layer screening equipment, including a frame, the frame is provided with two frames, a plurality of supporting mechanisms are connected between the frame and the frame, the frame is provided with three stacked screening components, the same side of the plurality of screening components are installed with discharge hoppers, the plurality of discharge hoppers are staggered, the topmost screening component on the frame is fixedly connected to the frame by a plurality of adjustable self-locking buckles, the frame is provided with two transmission mechanisms, the two transmission mechanisms are respectively connected to the corresponding two frames, the two transmission mechanisms are connected with the same linkage mechanism, and the frame is installed with a driving mechanism for driving one of the transmission mechanisms to operate.

[0006] Preferably, the screening assembly includes a rectangular frame, a grid plate is fixedly installed in the rectangular frame, a plurality of knocking balls are arranged in the grid plate, a sieve plate 2 is arranged above the grid plate, four sides of the sieve plate 2 are fixedly connected to the inner wall of the rectangular frame, a sieve plate 1 is slidably installed between the grid plate and the sieve plate 2, a hollow plate is fixedly installed on the bottom of the grid plate, a discharge port is opened on one side of the rectangular frame close to the discharge hopper, the discharge hopper is fixedly connected to one side of the rectangular frame, the discharge hopper is communicated with the discharge port, and the bottom of the discharge port is flush with the top of the sieve plate 1.

[0007] Preferably, four connecting blocks are fixedly installed at the bottom of the sieve plate 1, and screws are fixedly installed on the four connecting blocks. The four screws respectively pass through the two sides of the rectangular frame and are slidably connected to the rectangular frame. The two screws on the same side are fixedly installed with the same cross bar at one end away from the sieve plate 1, and a nut 1 is threadedly sleeved on the screw, and the nut 1 abuts against the outer side of the rectangular frame.

[0008] Preferably, a plurality of linearly distributed blocking mechanisms are provided above the second sieve plate, and the blocking mechanisms include a fixing bar whose two ends are fixedly connected to the inner side of the rectangular frame, a plurality of linearly distributed elastic columns are fixedly installed on the bottom of the fixing bar, the bottoms of the plurality of elastic columns are all in contact with the second sieve plate, a plurality of L-shaped rods are fixedly installed on one side of the fixing bar, and the same trapezoidal bar is fixedly installed on one end of the plurality of L-shaped rods away from the fixing bar, and the bottom of the trapezoidal bar is in contact with the second sieve plate.

[0009] Preferably, the transmission mechanism includes two fixed seats fixedly connected to the frame, the same rotating shaft is rotatably installed on the two fixed seats, two eccentric bearing sleeves are fixedly sleeved on the rotating shaft, and connecting frames are fixedly sleeved on the two eccentric bearing sleeves, push-pull rods are fixedly installed on the sides of the two connecting frames close to the frame, and connecting frames are slidably sleeved on the two push-pull rods. The two connecting frames are fixedly connected to the frame, and two disc spring bodies are slidably sleeved on the push-pull rods. The sides of the two disc spring bodies close to each other are abutted against the connecting frames, and two nuts are threadedly sleeved on the push-pull rods. The sides of the two nuts close to each other are respectively abutted against the corresponding disc spring bodies.

[0010] Preferably, the linkage mechanism includes pulley one and pulley two, and pulley one and pulley two are respectively fixedly mounted on two rotating shafts, and pulley one and pulley two are sleeved with the same synchronous belt one, and the linkage mechanism also includes a tensioning wheel fixedly mounted on the frame, and the synchronous belt one is rollingly connected to the tensioning wheel, and the driving mechanism includes a motor fixedly mounted on the frame and a pulley three fixedly mounted on one of the rotating shafts, and a pulley four is fixedly mounted on the output shaft of the motor, and pulley three and pulley four are sleeved with the same synchronous belt two.

[0011] Preferably, the supporting mechanism comprises two fixing plates, the two fixing plates are fixedly connected to the rack and the frame respectively, and the same leaf spring is fixedly mounted on the two fixing plates.

[0012] Preferably, the adjustable self-locking buckle comprises a detachably connected fixing hook and a buckle body, the fixing hook is fixedly connected to a connecting block located at the top of the frame, and the buckle body is fixedly connected to the frame.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present invention can absorb and release energy by utilizing the buffering performance of the disc spring body, which helps to increase the movement range of the frame and can be operated at an ideal speed, which can not only improve production efficiency but also extend the service life of moving parts;

[0015] 2. The linkage mechanism can drive the three-layer screening components on the two frames to move synchronously, reduce polarization, and greatly increase the service life of the supporting mechanism. The barrier mechanism is used to increase the contact time between the material and the screen plate 2, so that the material is evenly distributed on the entire screen plate 2, thereby improving the screening rate;

[0016] 3. Through the cooperation of sieve plate 1 and sieve plate 2, the screening holes can be adjusted to be suitable for screening materials with different particle sizes. In addition, by knocking sieve plate 1 and sieve plate 2 with a vibrating knocking ball, the materials in the screening meshes of sieve plate 1 and sieve plate 2 can be cleared during the screening process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view of a disc spring buffered, synchronously operated, high-efficiency double-layer screen device proposed by the present invention;

[0018] Figure 2 A top view and cross-section of a disc spring buffered, synchronously operated, high-efficiency double-layer screen device proposed by the present invention Figure 1 ;

[0019] Figure 3 A top view and cross-section of a disc spring buffered, synchronously operated, high-efficiency double-layer screen device proposed by the present invention Figure 2 ;

[0020] Figure 4 This is a schematic diagram of the structure of a screening component in a disc spring buffered synchronously operated high-efficiency double-layer screening device proposed by the present invention;

[0021] Figure 5 An exploded view of a screening component in a disc spring buffered synchronously operated high-efficiency double-layer screening device proposed by the present invention;

[0022] Figure 6 for Figure 5A schematic diagram of the enlarged structure of part A;

[0023] Figure 7 This is a schematic diagram of the structure of a blocking mechanism in a disc spring buffered synchronously operated high-efficiency double-layer screen device proposed by the present invention;

[0024] Figure 8 This is a schematic diagram of the structure of the support mechanism in a disc spring buffered synchronously operated high-efficiency double-deck screen device proposed by the present invention;

[0025] Fig. 9 It is a partial structural schematic diagram of the transmission mechanism in a disc spring buffered synchronously operated high-efficiency double-deck screen device proposed by the present invention;

[0026] Fig.10 This is a schematic diagram of the structure of an adjustable self-locking buckle in a disc spring buffered synchronously running high-efficiency double-layer screen device proposed by the present invention;

[0027] Fig.11 A schematic diagram of the linkage mechanism and the driving mechanism in a disc spring buffered synchronously operated high-efficiency double-deck screen device proposed by the present invention, as well as a partial schematic diagram of the two transmission mechanisms;

[0028] Fig.12 This is a schematic structural diagram of a screening group and a discharging hopper in a disc spring buffered synchronously operated high-efficiency double-layer screening device proposed by the present invention.

[0029] In the figure: 1, rack; 2, frame; 3, screening assembly; 31, rectangular frame; 311, discharge port; 32, grid plate; 33, knocking ball; 34, hollow plate; 35, screen plate 1; 351, connecting block; 352, screw; 353, cross bar; 354, nut 1; 36, screen plate 2; 37, blocking mechanism; 371, fixing bar; 372, elastic column; 373, L-shaped bar; 374, trapezoidal bar; 4, discharge hopper; 5, transmission mechanism; 51, fixing Seat; 52, rotating shaft; 53, eccentric bearing sleeve; 54, push-pull rod; 55, connecting frame; 56, disc spring body; 57, nut two; 58, connecting frame; 6, linkage mechanism; 61, pulley one; 62, pulley two; 63, tensioning pulley; 7, supporting mechanism; 71, fixing plate; 72, leaf spring; 8, driving mechanism; 81, motor; 82, pulley three; 83, pulley four; 9, adjustable self-locking buckle; 91, fixing hook; 92, buckle body. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on 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.

[0031] Please refer to Figure 1-Figure 12 The present invention provides a technical solution: a disc spring buffered synchronously running high-efficiency double-layer screening equipment, comprising a frame 1, two frames 2 are arranged on the frame 1, a plurality of supporting mechanisms 7 are connected between the frame 1 and the frame 2, three stacked screening components 3 are arranged on the frame 2, a plurality of screening components 3 are installed on the same side with discharge hoppers 4, and a plurality of discharge hoppers 4 are staggered, and the topmost screening component 3 on the frame 2 is fixedly connected to the frame 2 by a plurality of adjustable self-locking buckles 9, two transmission mechanisms 5 are arranged on the frame 1, and the two transmission mechanisms 5 are respectively connected to the corresponding two frames 2, and the same linkage mechanism 6 is connected between the two transmission mechanisms 5, and a driving mechanism 8 for driving one of the transmission mechanisms 5 to operate is installed on the frame 1.

[0032] The screening component 3 includes a rectangular frame 31, in which a grid plate 32 is fixedly installed, a plurality of knocking balls 33 are arranged in the grid plate 32, a sieve plate 2 36 is arranged above the grid plate 32, the four sides of the sieve plate 2 36 are fixedly connected to the inner wall of the rectangular frame 31, a sieve plate 1 35 is slidably installed between the grid plate 32 and the sieve plate 2 36, a hollow plate 34 is fixedly installed at the bottom of the grid plate 32, a discharge port 311 is opened on one side of the rectangular frame 31 close to the discharge hopper 4, the discharge hopper 4 is fixedly connected to one side of the rectangular frame 31, the discharge hopper 4 is communicated with the discharge port 311, and the bottom of the discharge port 311 is flush with the top of the sieve plate 1 35.

[0033] Furthermore, during the up and down and left and right reciprocating movement of the screening component 3, the multiple knocking balls 33 between the hollow plate 34 and the screen plate 1 35 can continuously knock on the screen plate 1 35. After the screen plate 1 35 and the screen plate 2 36 are knocked, the materials originally blocked in the holes of the screen plate 1 35 and the screen plate 2 36 can be shaken off, ensuring that the screen plate 1 35 and the screen plate 2 36 are not easily blocked during the material screening process. In addition, the mesh plate 32 can separate the multiple knocking balls 33 to ensure that the multiple mesh plates 32 will not gather together, so that the knocking of the screen plate 1 35 by the multiple knocking balls 33 can be more uniform.

[0034] Four connecting blocks 351 are fixedly installed at the bottom of the sieve plate 35, and screws 352 are fixedly installed on the four connecting blocks 351. The four screws 352 respectively penetrate the two sides of the rectangular frame 31 and are slidably connected to the rectangular frame 31. The two screws 352 on the same side are fixedly installed with the same cross bar 353 at one end away from the sieve plate 35, and a nut 354 is threadedly sleeved on the screw 352, and the nut 354 abuts against the outer side of the rectangular frame 31.

[0035] Further, the four nuts 354 are loosened, and then the sieve plate 1 35 is pushed to move by the corresponding cross bar 353. As the holes on the sieve plate 1 35 and the sieve plate 2 36 are staggered, the screening hole sizes of the sieve plates 1 35 and the sieve plates 2 36 are changed. After adjustment, the four screws 352 can be retightened to press against the outside of the rectangular frame 31 to complete the fixation between the sieve plates 1 35 and the sieve plates 2 36. By adjusting the positions of the sieve plates 1 35 and the sieve plates 2 36, the sieve plates 1 35 and the sieve plates 2 36 can perform multi-stage screening of the materials.

[0036] A plurality of linearly distributed blocking mechanisms 37 are provided above the sieve plate 36, and the blocking mechanisms 37 include a fixing bar 371 whose two ends are fixedly connected to the inner side of the rectangular frame 31, a plurality of linearly distributed elastic columns 372 are fixedly installed on the bottom of the fixing bar 371, and the bottoms of the plurality of elastic columns 372 are all in contact with the sieve plate 36; a plurality of L-shaped rods 373 are fixedly installed on one side of the fixing bar 371, and the same trapezoidal bar 374 is fixedly installed on one end of the plurality of L-shaped rods 373 away from the fixing bar 371, and the bottom of the trapezoidal bar 374 is in contact with the sieve plate 36.

[0037] Furthermore, by providing the trapezoidal bars 374, the residence time of the material on the top of the second screen plate 36 can be reduced, so that the second screen plate 36 can have a longer time to more fully screen the material.

[0038] The transmission mechanism 5 includes two fixed seats 51 fixedly connected to the frame 1, and the same rotating shaft 52 is rotatably installed on the two fixed seats 51. Two eccentric bearing sleeves 53 are fixedly sleeved on the rotating shaft 52, and the two eccentric bearing sleeves 53 are fixedly sleeved with connecting frames 58. Push-pull rods 54 are fixedly installed on the side of the two connecting frames 58 close to the frame 2. Connecting frames 55 are slidably sleeved on the two push-pull rods 54. The two connecting frames 55 are fixedly connected to the frame 2. Two disc spring bodies 56 are slidably sleeved on the push-pull rods 54. The sides of the two disc spring bodies 56 that are close to each other are abutted against the connecting frames 55. Two nuts 57 are threadedly sleeved on the push-pull rods 54. The sides of the two nuts 57 that are close to each other are respectively abutted against the corresponding disc spring bodies 56.

[0039] Furthermore, the connecting frame 55 is clamped by two disc spring bodies 56 to avoid a rigid connection between the push-pull rod 54 and the connecting frame 55. After that, when the push-pull rod 54 drives the connecting frame 55 to move through the two disc spring bodies 56, each component can be protected to a certain extent. In addition, the buffering performance of the disc spring body 56 can absorb and release energy, which helps to increase the movement amplitude of the frame 2, thereby improving the screening effect of the screening assembly 3 installed on the frame 2.

[0040] The linkage mechanism 6 includes a pulley 1 61 and a pulley 2 62, which are fixedly mounted on two rotating shafts 52 respectively, and the same synchronous belt 1 is mounted on the pulley 1 61 and the pulley 2 62. The linkage mechanism 6 also includes a tensioning wheel 63 fixedly mounted on the frame 1, and the synchronous belt 1 is rollingly connected to the tensioning wheel 63. The driving mechanism 8 includes a motor 81 fixedly mounted on the frame 1 and a pulley 3 82 fixedly mounted on one of the rotating shafts 52. A pulley 4 83 is fixedly mounted on the output shaft of the motor 81, and the same synchronous belt 2 is mounted on the pulleys 3 82 and 4 83.

[0041] The supporting mechanism 7 includes two fixing plates 71 , which are fixedly connected to the rack 1 and the frame 2 respectively, and a same leaf spring 72 is fixedly mounted on the two fixing plates 71 .

[0042] Furthermore, since the leaf spring 72 is in the shape of a rectangular plate, the leaf spring 72 is only prone to deformation in the up and down and left and right directions. Therefore, the transmission mechanism 5 will only drive the screening component 3 to reciprocate in the left and right and up and down directions. Therefore, the meshes on the screen plate 1 35 and the screen plate 2 36 can screen the material better. Secondly, the left and right movement of the screening component 3 can conveniently push the screened material remaining on the screening component 3 to the discharge hopper 4. The end of the screening component 3 where the discharge hopper 4 is installed is slightly lower than the end close to the transmission mechanism 5. In the process of the left and right reciprocating movement of the screening component 3, the material on the screen plate 1 35 can actively roll toward the discharge port 311 under the action of gravity and finally enter the discharge hopper 4.

[0043] The adjustable self-locking buckle 9 includes a detachably connected fixing hook 91 and a buckle body 92 . The fixing hook 91 is fixedly connected to the uppermost connecting block 351 of the frame 2 , and the buckle body 92 is fixedly connected to the frame 2 .

[0044] Furthermore, when three screening components 3 are stacked on the frame 2, a rectangular frame 31 fixed with multiple fixing hooks 91 is placed on the top layer, and then multiple buckle bodies 92 on the frame 2 are respectively fastened with corresponding fixing hooks 91, so that the two middle screening components 3 can be clamped by the frame 2 and the topmost screening component 3, and finally the three screening components 3 are tightly fixed on the frame 2.

[0045] In this embodiment: when in use, the material is placed in the uppermost screening assembly 3 on the two frames 2, and then the motor 81 is started to drive the pulley 4 83 to rotate, and the pulley 4 83 then drives the pulley 3 82 to rotate through the synchronous belt 2, and the pulley 3 82 then drives the corresponding rotating shaft 52 to rotate, and through the cooperation of the pulley 1 61, the pulley 2 62 and the synchronous belt 1, when one rotating shaft 52 rotates, the other rotating shaft 52 will rotate synchronously;

[0046] The rotation of the rotating shaft 52 will drive the two connecting frames 58 to swing eccentrically through the two eccentric bearing sleeves 53, and the connecting frames 58 will then pull the connecting frame 55 and the frame 2 to swing back and forth through the push-pull rod 54. The two frames 2 can screen the materials in the screening assembly 3 located thereon during the process of reciprocating left and right swings;

[0047] When the three screening components 3 on the frame 2 are moving back and forth, the materials are graded in sequence from the top screening component 3 and will fall onto the lower frame 2 after being screened by the three screening components 3 and will be discharged away, while the materials remaining on the screening component 3 will be discharged from the corresponding discharge hopper 4;

[0048] When the screening component 3 is screening materials, part of the materials pass through the holes connecting the sieve plate 1 35 and the sieve plate 2 36 and finally pass through the hollow plate 34, while another part of the materials stay on the sieve plate 2 36 and move along the sieve plate 2 36 toward the discharge port 311. Finally, the materials staying on the sieve plate 2 36 will enter the discharge hopper 4 from the discharge port 311 and be finally discharged.

[0049] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A disc spring buffered synchronously operated high-efficiency double-layer screen device, comprising a frame (1), characterized in that: The frame (1) is provided with two frames (2), a plurality of supporting mechanisms (7) are connected between the frame (1) and the frame (2), three stacked screening assemblies (3) are provided on the frame (2), a discharge hopper (4) is installed on the same side of the plurality of screening assemblies (3), and the plurality of discharge hoppers (4) are staggeredly distributed, the screening assembly (3) located at the top of the frame (2) is fixedly connected to the frame (2) via a plurality of adjustable self-locking buckles (9), the frame (1) is provided with two transmission mechanisms (5), the two transmission mechanisms (5) are respectively connected to the corresponding two frames (2), the two transmission mechanisms (5) are connected to the same linkage mechanism (6), and a driving mechanism (8) for driving one of the transmission mechanisms (5) to operate is installed on the frame (1); The transmission mechanism (5) comprises two fixed seats (51) fixedly connected to the frame (1); the two fixed seats (51) are provided with a same rotating shaft (52) for rotation through them; two eccentric bearing sleeves (53) are fixedly sleeved on the rotating shaft (52); the two eccentric bearing sleeves (53) are fixedly sleeved with connecting frames (58); a push-pull rod (54) is fixedly installed on one side of the two connecting frames (58) close to the frame (2); a connecting frame (55) is slidably sleeved on the two push-pull rods (54); the two connecting frames (55) are fixedly connected to the frame (2); two disc spring bodies (56) are slidably sleeved on the push-pull rods (54); the two disc spring bodies (56) are in contact with the connecting frames (55) on their sides close to each other; two nuts (57) are threadedly sleeved on the push-pull rods (54); the two nuts (57) are respectively in contact with the corresponding disc spring bodies (56) on their sides close to each other; The support mechanism (7) comprises two fixing plates (71), the two fixing plates (71) being fixedly connected to the frame (1) and the frame (2) respectively, and the same leaf spring (72) being fixedly mounted on the two fixing plates (71).

2. According to claim 1, a disc spring buffered synchronous operation high-efficiency double-layer screen equipment is characterized by: The screening assembly (3) comprises a rectangular frame (31), a grid plate (32) is fixedly installed in the rectangular frame (31), a plurality of knocking balls (33) are arranged in the grid plate (32), a second sieve plate (36) is arranged above the grid plate (32), four sides of the second sieve plate (36) are fixedly connected to the inner wall of the rectangular frame (31), a first sieve plate (35) is slidably installed between the grid plate (32) and the second sieve plate (36), a hollow plate (34) is fixedly installed at the bottom of the grid plate (32), a discharge port (311) is opened on one side of the rectangular frame (31) close to the discharge hopper (4), the discharge hopper (4) is fixedly connected to one side of the rectangular frame (31), the discharge hopper (4) is communicated with the discharge port (311), and the bottom of the discharge port (311) is flush with the top of the first sieve plate (35).

3. According to claim 2, a disc spring buffered synchronous operation high-efficiency double-layer screen equipment is characterized by: Four connecting blocks (351) are fixedly mounted on the bottom of the sieve plate 1 (35), and screw rods (352) are fixedly mounted on the four connecting blocks (351). The four screw rods (352) respectively penetrate two sides of the rectangular frame (31) and are slidably connected to the rectangular frame (31). The ends of the two screw rods (352) on the same side away from the sieve plate 1 (35) are fixedly mounted with a same cross bar (353), and a nut 1 (354) is threadedly sleeved on the screw rods (352), and the nut 1 (354) abuts against the outer side of the rectangular frame (31).

4. The disc spring buffered synchronously operated high-efficiency double-layer screen equipment according to claim 2 is characterized by: A plurality of blocking mechanisms (37) distributed linearly are provided above the second sieve plate (36), the blocking mechanism (37) comprising a fixing bar (371) having two ends fixedly connected to the inner side of the rectangular frame (31), a plurality of elastic columns (372) distributed linearly are fixedly mounted on the bottom of the fixing bar (371), the bottoms of the plurality of elastic columns (372) are all in contact with the second sieve plate (36), a plurality of L-shaped rods (373) are fixedly mounted on one side of the fixing bar (371), a same trapezoidal bar (374) is fixedly mounted on one end of the plurality of L-shaped rods (373) away from the fixing bar (371), and the bottom of the trapezoidal bar (374) is in contact with the second sieve plate (36).

5. According to claim 1, a disc spring buffered synchronous operation high-efficiency double-layer screen equipment is characterized by: The linkage mechanism (6) comprises a first pulley (61) and a second pulley (62), the first pulley (61) and the second pulley (62) being fixedly mounted on two rotating shafts (52) respectively, the first pulley (61) and the second pulley (62) being sleeved with a same synchronous belt (1), the linkage mechanism (6) further comprises a tensioning wheel (63) fixedly mounted on the frame (1), the synchronous belt (1) being rollingly connected to the tensioning wheel (63), the driving mechanism (8) comprising a motor (81) fixedly mounted on the frame (1) and a third pulley (82) fixedly mounted on one of the rotating shafts (52), the output shaft of the motor (81) being fixedly mounted with a fourth pulley (83), the third pulley (82) and the fourth pulley (83) being sleeved with a same synchronous belt (2).

6. The disc spring buffered synchronously operated high-efficiency double-layer screen equipment according to claim 2 is characterized by: The adjustable self-locking buckle (9) comprises a detachably connected fixing hook (91) and a buckle body (92), wherein the fixing hook (91) is fixedly connected to a connecting block (351) located at the top of the frame (2), and the buckle body (92) is fixedly connected to the frame (2).

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