Laminated vibrating fine screen

Abstract

The utility model relates to a laminated vibrating fine screen which comprises a plurality of laminated screen box sets, a water spraying system and a machine frame, the machine frame is obliquely arranged, and the laminated screen box sets are arranged on the machine frame side by side. The water spraying system comprises an oversize water spraying pipeline and an undersize water spraying pipeline, and the oversize water spraying pipeline and the undersize water spraying pipeline are arranged above and below the multiple laminated screen box sets correspondingly. The utility model has the beneficial effects that the water spraying pipelines are arranged above and below the plurality of laminated screen box groups, so that material deposits on the screen can be effectively removed, meshes of the screen are prevented from being blocked, the requirement of manual intervention is greatly reduced, the labor intensity is reduced, the stability of the screening quality is also improved, and the screening efficiency is improved. Meanwhile, continuity and high efficiency of the screening process are guaranteed, and therefore the overall screening efficiency is improved; the mode that the multiple laminated screen boxes are distributed in an inclined and laminated mode is adopted, so that the vibrating screen is reasonable in structural distribution, small in occupied space, stable in work and high in screening efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of screening equipment, in particular to a laminated vibrating fine screen. Background Art

[0002] The laminated high-frequency vibration fine screen is used as a device for separating and grading materials. The exciting forces generated by the two vibration motors as vibration sources cancel each other out in one direction on the screen surface and overlap each other in the other direction. This forms a combined force that causes the material to jump on the screen surface. The parameters of the vibration motor can be adjusted to adjust the amplitude of the material on the screen surface. This enables the application of laminated screens on different materials. The vibration of the vibration motor drives the upper screen assembly and the lower screen box assembly to vibrate together. This causes the material to continuously jump on the screen surface. At the same time, the water spray system continuously replenishes water to the screen surface to assist in screening. As a result, the material is dispersed, and particles smaller than the screen holes pass through the screen holes to become finished products under the screen. Particles larger than the screen holes continue to jump on the screen surface, and finally jump out of the screen to become finished products on the screen.

[0003] Conventional laminated screens in the domestic market have certain equipment limitations and are insufficient in terms of space and infrastructure utilization. The utilization efficiency of the vibration motor unit is not high, and there is a great waste of energy. At the same time, due to the multi-layer structure of the laminated high-frequency fine screen box, the height is too high, and it is difficult to inspect and replace the screen. It is also difficult to manually clean the mesh blockage caused by material accumulation. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a laminated vibrating fine screen, which effectively overcomes the defects of the prior art, improves space utilization and material processing capacity, reasonably reduces infrastructure and equipment energy consumption, and has obvious water replenishment and cleaning effects.

[0005] The utility model solves the above technical problems with the following technical solutions: a laminated vibrating fine screen, comprising: a plurality of laminated screen box groups, a water spraying system and a frame, wherein the frame is arranged obliquely, and a plurality of the laminated screen box groups are arranged side by side on the frame;

[0006] The water spraying system comprises: an upper screen water spraying pipeline and an under-screen water spraying pipeline, and the upper screen water spraying pipeline and the under-screen water spraying pipeline are respectively arranged above and below the plurality of stacked screen box groups.

[0007] The beneficial effects of the utility model are: by setting water spray pipelines above and below the multiple stacked screen box groups, the material deposits on the screen can be effectively removed to prevent the mesh of the screen from being blocked, greatly reducing the need for manual intervention and labor intensity, while also improving the stability of the screening quality, while ensuring the continuity and efficiency of the screening process, thereby improving the overall screening efficiency. At the same time, the multiple stacked screen boxes are tilted and stacked to distribute, so that the vibrating screen structure is reasonably distributed, occupies less space, works stably, and has a higher screening efficiency.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, the stacked screen box group comprises: a plurality of screen boxes, a connecting beam, an upper screen and a vibration motor, wherein the plurality of screen boxes are arranged side by side at intervals on the upper end surface of the frame; the upper screen is arranged above the uppermost screen box;

[0010] The vibration motor is installed on the side of the upper screen away from the screen box;

[0011] A connecting beam is arranged on both sides of each of the plurality of screen boxes, and a pair of the connecting beams are arranged parallel to each other.

[0012] The beneficial effect of adopting the above further solution is: by distributing multiple screen boxes in layers at intervals and installing screens in each screen box, a large amount of material can be processed at the same time, greatly improving the screening efficiency and processing capacity. The tilting setting of the screen box also helps the smooth flow and separation of materials during the screening process. The setting of the vibration motor enables the vibration to be evenly and effectively transmitted to each screen box, ensuring that the material is fully vibrated and separated during the screening process.

[0013] Furthermore, the connecting beam is extended along the inclined stacking direction of the plurality of screen boxes, and the connecting beam is connected to the side plates of the screen boxes.

[0014] The beneficial effect of adopting the above further scheme is: by adjusting the position of the connecting beam from the existing screen box up and down to both sides of the screen box, the distribution is more reasonable, the space occupied is small, the screen box can be expanded to a large number of layers, the operation is stable, the screening efficiency is high, and the structural stability of the laminated screen box group is enhanced.

[0015] Furthermore, the direction in which the plurality of screen boxes are distributed in an inclined stack is consistent with the inclination direction of the frame.

[0016] Furthermore, it also includes: a material collecting trough and a ore feeder, wherein the material collecting trough is installed below the frame, and the material collecting trough is respectively connected and communicated with the upper screen surface and the lower bottom trough of each screen box, and is used to collect the upper screen material and the lower screen material of the screen box respectively;

[0017] A plurality of feeders are arranged above the frame corresponding to each screen box and the upper screen, and a plurality of feeders are arranged below the frame in communication with the screen box and the upper screen for feeding each screen box and the upper screen.

[0018] The beneficial effect of adopting the above further scheme is that the setting of the material collecting trough enables the upper and lower screens produced during the screening process to be effectively collected. The material collecting trough is assembled below the frame and is connected to the upper screen surface and the lower bottom trough of each screen box, ensuring that the screened material can smoothly enter the material collecting trough, which is convenient for the subsequent further processing and utilization of the material. Multiple feeders are arranged along the frame in a one-to-one correspondence with the screen box and the upper screen, ensuring that each screen box and the upper screen can be evenly fed, avoiding the problem of reduced screening efficiency or unstable screening quality due to uneven feeding. At the same time, by feeding the screen box and the upper screen with the feeder, the flow rate and flow of the material can also be effectively controlled, making the screening process more stable and controllable.

[0019] Further, the under-screen water spray pipeline comprises: an under-screen pipeline and an under-screen branch pipeline, and the under-screen pipeline and the under-screen branch pipeline are connected through a pipeline;

[0020] The under-screen pipeline is fixed to one side below the frame, and the under-screen pipeline is provided with multiple groups of pipelines corresponding to each position of the screen box, and valves are provided on the pipelines;

[0021] A plurality of groups of the under-screen branch pipelines are arranged corresponding to the positions of the screen boxes, and a group of the under-screen branch pipelines is fixedly connected to the interior of one of the screen boxes.

[0022] The beneficial effect of adopting the above further scheme is that the under-screen branch pipe is placed inside the screen box, the space is reasonably utilized, the water replenishment and cleaning effects are obvious, and the shortcomings of insufficient cleaning function when using traditional equipment are effectively compensated. The under-screen pipe is fixed to one side of the frame, and multiple groups of pipes are arranged at the corresponding positions of the screen box, and a valve is separately arranged on each pipe to facilitate the water spraying operation on the screen box. At the same time, the valve on each pipe can be controlled independently, and the water spraying amount and water spraying range can be adjusted as needed, which improves the flexibility and controllability of the screening process. There are also multiple groups of under-screen branch pipes, which are fixedly connected to the inside of the screen box, so that each screen box can be sprayed with water evenly and sufficiently, thereby improving the screening efficiency and quality.

[0023] Further, the above-screen water spray pipeline comprises: an above-screen pipeline and an above-screen branch pipeline, and the above-screen pipeline and the above-screen branch pipeline are connected through a pipeline;

[0024] The above-screen water spraying pipelines are provided with a plurality of groups, and the above-screen pipelines of the plurality of groups of above-screen water spraying pipelines are fixed side by side in the middle of the frame located on the opposite side of the below-screen water spraying pipeline;

[0025] The above-screen branches are arranged in a plurality of groups at positions corresponding to the above-screen boxes, and one group of above-screen branch pipelines is fixedly connected to the inside of one of the above-screen boxes.

[0026] The beneficial effect of adopting the above further scheme is that the branch pipe on the screen is placed inside the screen box, the space is reasonably utilized, the water replenishment and cleaning effects are obvious, and the shortcomings of insufficient cleaning function when using traditional equipment are effectively compensated.

[0027] Furthermore, a side beam is provided on both sides of the frame; and a support frame is installed below the frame.

[0028] The beneficial effects of adopting the above further scheme are: the overall structural layout of the vibrating fine screen is more reasonable, the whole machine has a "horizontal" structure, the space utilization rate is high, and the occupied space is reduced.

[0029] Furthermore, the angle between the frame and the horizontal plane is α, 20°<α<30°.

[0030] The beneficial effects of adopting the above further solution are: the angle design is reasonable, the overall equipment height is reduced, and the space usage is reduced.

[0031] Furthermore, the angle between the upper screen surface of the screen box and the horizontal plane is β, 20°<β<30°.

[0032] The beneficial effects of adopting the above further scheme are: the angle design is reasonable, so that multiple screen boxes (more than 5 can be placed) can be arranged in horizontal layers in the frame, and the height of the screen box at the highest point of the screen box group is greatly reduced compared with traditional equipment, breaking through the design of 5-layer screen boxes in traditional equipment, with higher screening efficiency, and the reduction in height greatly reduces the difficulty of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the structure of the laminated high-frequency vibrating fine screen of the utility model;

[0034] Figure 2 It is a structural schematic diagram of a laminated screen box group in a laminated high-frequency vibrating fine screen of the utility model;

[0035] Figure 3 This is a back view of the laminated high-frequency vibrating fine screen of the utility model;

[0036] Figure 4 It is a cross-sectional view of the water spray system of the present utility model.

[0037] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0038] 1. Support frame; 2. Frame; 3. Feeder; 4. Laminated screen box group; 5. Water spray system; 6. Collecting trough; 21. Side beam; 41. High-frequency cylindrical vibration motor; 42. Upper screen; 43. Screen box; 44. Connecting beam; 51. Water spray pipeline above the screen; 52. Water spray pipeline below the screen; 53. Pipeline above the screen; 54. Branch pipeline above the screen; 55. Pipeline below the screen; 56. Branch pipeline below the screen. DETAILED DESCRIPTION

[0039] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0040] like Figure 1-4 As shown, the utility model provides a laminated vibrating fine screen, including: a plurality of laminated screen box groups 4, a water spray system 5 and a frame 2, the frame 2 is tilted downward from one end to the other end, and a plurality of laminated screen box groups 4 are arranged in layers on the tilted frame 2, so the laminated screen box groups 4 are also tilted along the tilted end surface of the frame 2, wherein the orderly arrangement of the laminated screen box groups 4 arranged side by side along the extension direction of the end surface of the frame 2 is a laminated arrangement. Specifically, a screen is installed in the laminated screen box group 4, and the screen divides the laminated screen box group 4 into an upper chamber and a lower chamber. Since the existing technology is relatively complete, no further description is made here.

[0041] In order to achieve water replenishment and solve the problem of clogging of the mesh of the screen caused by the accumulation of materials in manual cleaning, a water spray system 5 is also provided. The water spray system 5 includes: an upper screen water spray pipeline 51 and an under-screen water spray pipeline 52, which are correspondingly distributed on both sides of the vibrating screen; specifically, an upper screen water spray pipeline 51 is provided above the multiple stacked screen box groups 4, and an under-screen water spray pipeline 52 is provided below the multiple stacked screen box groups 4, so that the multiple stacked screen box groups 4 are cleaned at the same time.

[0042] In the screening process, manual cleaning of the screen is an inevitable step, which not only increases labor costs, but may also reduce the screening effect due to untimely or incomplete cleaning. By setting water spray pipelines above and below the multiple stacked screen box groups 4, the material deposits on the screen can be effectively removed to prevent the mesh of the screen from being blocked, greatly reducing the need for manual intervention and reducing labor intensity. At the same time, it also improves the stability of the screening quality, while ensuring the continuity and efficiency of the screening process, thereby improving the overall screening efficiency. At the same time, the multiple stacked screen boxes 43 are tilted and stacked, so that the structure of the vibrating screen is reasonably distributed, occupies less space, works stably, and has a higher screening efficiency.

[0043] like Figure 1-2As shown, in the preferred solution, the stacked screen box group 4 includes: multiple screen boxes 43, connecting beams 44, upper screens 42 and vibration motors. Multiple screen boxes 43 are stacked and distributed on the upper end surface of the frame 2 at intervals, and the inclination directions of the multiple screen boxes 43 are consistent. It can be imagined that since the frame 2 is tilted, the screen boxes 43 arranged on the upper end surface of the frame 2 are also tilted. The upper screen 42 is arranged above the topmost screen box 43, and a vibration motor is installed on the side of the upper screen 42 away from the screen box 43. At the same time, a connecting beam 44 is respectively arranged on both sides of the multiple screen boxes 43. In this embodiment, two connecting beams 44 that are parallel to each other and distributed at intervals are symmetrically distributed on both sides of the multiple screen boxes 43.

[0044] It can be imagined that the number of the laminated screen box groups 4 can be set according to actual needs. The laminated screen box groups 4 are modularly designed, which is easy and quick to adjust and can adapt to changes in different materials and screening requirements.

[0045] In the above scheme, multiple screen boxes 43 are arranged in layers and screens are installed in each screen box 43, so that a large amount of materials can be processed at the same time, which greatly improves the screening efficiency and processing capacity. The inclined setting of the screen box 43 also helps the smooth flow and separation of materials during the screening process. The setting of the vibration motor enables the vibration to be evenly and effectively transmitted to each screen box 43, ensuring that the materials are fully vibrated and separated during the screening process.

[0046] like Figure 1-2 As shown, in the preferred solution, the connecting beam 44 is extended along the inclined stacking direction of the multiple screen boxes 43, and the connecting beam 44 is fixedly connected to the side plate of the screen box 43. The inclined stacking direction of the screen box 43 is the direction regularly set along the inclined end surface of the frame 2. Therefore, the direction of the inclined stacking distribution of the multiple screen boxes 43 is consistent with the inclined direction of the frame 2. By adjusting the position of the connecting beam 44 from the existing screen box 43 up and down to both sides of the screen box 43, the distribution is more reasonable, the space occupied is small, the screen box 43 can be expanded to a large number of layers, the operation is stable, the screening efficiency is high, and the structural stability of the stacked screen box group 4 is also enhanced.

[0047] like Figure 1 As shown, in the preferred embodiment, the laminated vibrating fine screen also includes: a material collecting trough 6 and a feeder 3, the material collecting trough 6 is installed below the frame 2, the material collecting trough 6 is respectively connected and communicated with the upper screen surface and the lower bottom trough of each screen box 43, and is used to collect the upper screen material and the lower screen material of the screen box 43 respectively, wherein the upper screen surface is the upper chamber, and the lower bottom trough is the lower chamber, and the low position of the upper chamber and the low position of the lower chamber are respectively communicated with the material collecting trough 6.

[0048] A plurality of feeders 3 are arranged at intervals along the length direction of the frame 2, and the positions and numbers of the feeders 3 correspond one-to-one with the screen boxes 43 and the upper screens 42, that is, each screen box 43 corresponds to one feeder 3, and a feeder 3 is also arranged corresponding to the upper screen 42, and materials are supplied to each screen box 43 and the upper screen 42 through the feeders 3.

[0049] In the above scheme, the setting of the material collecting trough 6 enables the upper and lower screens produced during the screening process to be effectively collected. The material collecting trough 6 is assembled below the frame 2, and is connected to the upper screen surface and the lower bottom trough of each screen box 43, ensuring that the screened material can smoothly enter the material collecting trough 6, which is convenient for the subsequent further processing and utilization of the material. Multiple feeders 3 are arranged along the frame 2 in a one-to-one correspondence with the screen box 43 and the upper screen 42, ensuring that each screen box 43 and the upper screen 42 can be evenly fed, avoiding the problem of reduced screening efficiency or unstable screening quality due to uneven feeding. At the same time, by feeding the screen box 43 and the upper screen 42 with the feeder 3, the flow rate and flow of the material can also be effectively controlled, making the screening process more stable and controllable.

[0050] like Figure 3-4 As shown, in the preferred solution, the under-screen water spray pipeline 52 includes: an under-screen pipeline 55 and an under-screen branch pipeline 56, and the under-screen pipeline 55 and the under-screen branch pipeline 56 are connected by a pipeline. In this embodiment, the under-screen pipeline 55 and the under-screen branch pipeline 56 are connected by a rubber hose; the under-screen pipeline 55 is fixed to one side below the frame 2, as shown in FIG. Figure 3 As shown, the under-screen pipeline 55 is provided with multiple groups of pipelines at the position corresponding to the screen box 43, and a valve is separately provided on each pipeline; it can be imagined that, in the same way as the setting of the screen box 43 corresponding to the feeder 3, multiple groups of pipelines are also provided in parallel corresponding to multiple screen boxes 43.

[0051] Similarly, multiple groups of under-screen branch pipelines 56 are also provided. One group of under-screen branch pipelines 56 is fixedly connected to the inside of a screen box 43 , and each group of under-screen branch pipelines 56 needs to be provided corresponding to each screen box 43 .

[0052] It is conceivable that the end of each group of under-screen branch pipelines 56 facing away from the under-screen pipeline 55 is also provided with a water spraying port.

[0053] In the above scheme, the under-screen branch pipeline 56 is placed inside the screen box 43, the space utilization is reasonable, the water replenishment and cleaning effects are obvious, and the shortcomings of insufficient cleaning function when the traditional equipment is used are effectively compensated. A rubber hose is used as a connector between the under-screen pipeline 55 and the under-screen branch pipeline 56, which has significant flexibility and durability. The rubber hose also has good sealing performance, which can effectively prevent water leakage or water seepage at the pipeline connection, and ensure the smooth progress of the under-screen water spraying process. The under-screen pipeline 55 is fixed to one side of the frame 2, and multiple groups of pipelines are arranged at the position corresponding to the screen box 43, and a valve is separately arranged on each pipeline to facilitate the water spraying operation of the screen box 43. At the same time, the valve on each pipeline can be independently controlled, and the water spraying amount and water spraying range can be adjusted as needed, which improves the flexibility and controllability of the screening process. The under-screen branch pipeline 56 is also provided with multiple groups and fixedly connected to the inside of the screen box 43, so that each screen box 43 can be sprayed evenly and sufficiently, improving the screening efficiency and quality.

[0054] like Figure 1 , Figure 4 As shown, in the preferred scheme, the above-screen water spray pipeline 51 includes: an above-screen pipeline 53 and an above-screen branch pipeline 54, and the above-screen pipeline 53 and the above-screen branch pipeline 54 are connected by pipelines; the above-screen water spray pipeline 51 is provided with multiple groups. In the present embodiment, two groups of above-screen water spray pipelines 51 are provided, and the above-screen pipelines 53 of the two groups of above-screen water spray pipelines 51 are fixed side by side at the middle position of the frame 2 on the opposite side of the below-screen water spray pipeline 52, and the above-screen branch pipelines 54 are arranged at the corresponding positions of the above-screen pipeline 53 and each screen box 43. Similarly, the above-screen branch pipelines 54 are provided with multiple groups, and the multiple groups of above-screen branch pipelines are fixedly connected to the inside of the screen box 43.

[0055] It is conceivable that the end of each group of above-screen branch pipelines 54 facing away from the above-screen pipeline 53 is also provided with a water spraying port.

[0056] In the above scheme, the branch pipeline 54 on the screen is placed inside the screen box 43, the space is reasonably utilized, the water replenishment and cleaning effects are obvious, and the shortcomings of insufficient cleaning function when using traditional equipment are effectively compensated.

[0057] like Figure 1 As shown, in the preferred solution, side beams 21 are arranged at intervals on both sides of the frame 2, and the side beams 21 correspond to the connecting beams 44 on both sides of the screen box 43 one by one. The connecting beams 44 can be elastically connected to the side beams 21. The prior art of this connection method is relatively perfect, and no further description is given here. At the same time, in this embodiment, since the frame 2 is tilted, the two ends of the tilted frame 2 are respectively supported and installed on two support frames 1, and are rotatably connected to the support frames 1, as shown in FIG. Figure 1 shown.

[0058] In the above scheme, the overall structural layout of the vibrating fine screen is more reasonable, the whole machine is a "horizontal" structure, the space utilization rate is high, and the occupied space is reduced.

[0059] In this embodiment, the structure of the original screen box 43 is changed to adjust the angles α and β; specifically, Figure 1 As shown, the angle between the rack 2 and the horizontal plane is defined as α, and the value range of the angle α is: 20°<α<30°. This angle is reasonably designed, and the overall equipment height is reduced, and the space usage is reduced. Figure 2 As shown, the angle between the upper screen surface of the screen box 43 and the horizontal plane is defined as β, and the value range of the angle β is: 20°<β<30°, and the best is β=25°. The angle design of the screen box 43 in the frame 2 is reasonable, so that multiple screen boxes 43 (more than 5 screen boxes can be placed) can be arranged in horizontal layers in the frame 2. The height of the screen box 43 at the highest point of the screen box 43 group is greatly reduced compared with traditional equipment, breaking through the design of 5-layer screen boxes 43 of traditional equipment, with higher screening efficiency and greatly reduced maintenance difficulty.

[0060] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A laminated vibrating fine screen, characterized in that: include: A plurality of stacked screen box groups (4), a water spray system (5) and a frame (2), wherein the frame (2) is arranged obliquely, and the plurality of stacked screen box groups (4) are arranged side by side on the frame (2); The water spraying system (5) comprises: an upper screen water spraying pipeline (51) and an lower screen water spraying pipeline (52), wherein the upper screen water spraying pipeline (51) and the lower screen water spraying pipeline (52) are respectively arranged above and below the plurality of stacked screen box groups (4).

2. A laminated vibrating fine screen according to claim 1, characterized in that: The stacked screen box group (4) comprises: a plurality of screen boxes (43), a connecting beam (44), an upper screen (42) and a vibration motor, wherein the plurality of screen boxes (43) are arranged side by side at intervals on the upper end surface of the frame (2); the upper screen (42) is arranged above the uppermost screen box (43); The vibration motor is installed on a side of the upper screen (42) facing away from the screen box (43); A connecting beam (44) is disposed on each of the two sides of the plurality of screen boxes (43), and a pair of the connecting beams (44) are disposed parallel to each other.

3. A laminated vibrating fine screen according to claim 2, characterized in that: The connecting beam (44) is extended along the inclined stacking direction of the plurality of screen boxes (43), and the connecting beam (44) is connected to the side plates of the screen boxes (43).

4. The laminated vibrating fine screen according to claim 2, characterized in that: The direction in which the plurality of screen boxes (43) are distributed in an inclined stack is consistent with the inclination direction of the frame (2).

5. A laminated vibrating fine screen according to any one of claims 2 to 4, characterized in that: Also includes: A material collecting trough (6) and a feeder (3), wherein the material collecting trough (6) is mounted below the frame (2), and the material collecting trough (6) is respectively connected and communicated with the upper screen surface and the lower bottom trough of each screen box (43), and is used to respectively collect the upper screen material and the lower screen material of the screen box (43); A plurality of the feeders (3) are arranged above the frame (2) corresponding to each of the screen boxes (43) and the upper screen (42); and a plurality of the feeders (3) are arranged below the frame (2) in communication with the screen boxes (43) and the upper screen (42) for feeding materials to each of the screen boxes (43) and the upper screen (42).

6. The laminated vibrating fine screen according to claim 2, characterized in that: The under-screen water spray pipeline (52) comprises: an under-screen pipeline (55) and an under-screen branch pipeline (56), wherein the under-screen pipeline (55) and the under-screen branch pipeline (56) are connected via a pipeline; The under-screen pipeline (55) is fixed to one side below the frame (2), and the under-screen pipeline (55) is provided with a plurality of groups of pipelines corresponding to the position of each screen box (43), and the pipelines are provided with valves; A plurality of groups of the under-screen branch pipelines (56) are arranged corresponding to the positions of the screen boxes (43), and one group of the under-screen branch pipelines (56) is fixedly connected to the interior of one of the screen boxes (43).

7. A laminated vibrating fine screen according to claim 6, characterized in that: The above-screen water spray pipeline (51) comprises: an above-screen pipeline (53) and an above-screen branch pipeline (54), wherein the above-screen pipeline (53) and the above-screen branch pipeline (54) are connected via a pipeline; The above-screen water spraying pipelines (51) are provided in a plurality of groups, and the above-screen pipelines (53) of the plurality of groups of above-screen water spraying pipelines (51) are fixed side by side in the middle of the frame (2) located on the opposite side of the below-screen water spraying pipelines (52); A plurality of groups of the above-screen branch pipes are arranged corresponding to the positions of the screen boxes (43), and a group of the above-screen branch pipes is fixedly connected to the interior of one of the screen boxes (43).

8. A laminated vibrating fine screen according to any one of claims 2-4, 6-7, characterized in that: A side beam (21) is provided on both sides of the frame (2); and a support frame (1) is supported and installed below the frame (2).

9. The laminated vibrating fine screen according to claim 1, characterized in that: The angle between the frame (2) and the horizontal plane is α, 20°<α<30°.

10. The laminated vibrating fine screen according to claim 5, characterized in that: The angle between the upper screen surface of the screen box (43) and the horizontal plane is β, 20°<β<30°.

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