Multi-stage automatic screening device for organic fertilizer

Abstract

The utility model discloses a kind of multistage automatic screening devices for organic fertilizer, it is related to fertilizer screening device technical field;And the utility model includes screening box, the top of screening box is fixedly installed with feed hopper, the top of inside screening box is fixed with screening board, interval setting feed groove is set on the screening board, the top chamfer of feed groove is set, the inside screening box is fixed with two symmetrical long plates below screening board, two The long plate is fixed with the clamping plate corresponding with feed groove between it;Intermittent blockage to feed groove is realized by first motor drive cam rotation, drive push plate and clamping plate, control fertilizer intermittent discharging, avoid raw material disposable centralized drop on screen.This design reduces the fertilizer amount that screen needs to handle from source instantaneously, greatly reduce the probability of screen blockage, guarantee the normal progress of screening operation, improve the continuity and stability of screening.

Description

Technical Field

[0001] This utility model relates to the technical field of fertilizer screening devices, specifically a multi-stage automatic screening device for organic fertilizers. Background Technology

[0002] Organic fertilizer, also known as farmyard manure, is a fertilizer made from organic matter. It has the characteristics of being diverse, widely sourced, and having a long-lasting effect. The nutrients contained in organic fertilizer are mostly in an organic state, which is difficult for crops to use directly. Through the action of microorganisms, a variety of nutrients are slowly released, continuously supplying nutrients to crops.

[0003] During the processing of organic fertilizers, the uneven particle size of organic matter can affect the fertilizer's effectiveness when mixed. Screening is necessary. However, current screening devices typically involve workers directly feeding the fertilizer into the inlet at once. This forces the screens in the screening device to handle a large number of fertilizer particles at once, reducing their screening efficiency and potentially causing serious blockages that disrupt normal screening operations. Utility Model Content

[0004] In order to solve the above problems, the purpose of this utility model is to provide a multi-stage automatic screening device for organic fertilizer.

[0005] To solve the above technical problems, the present invention adopts the following technical solution: a multi-stage automatic screening device for organic fertilizer, comprising a screening box, a feeding hopper fixedly installed on the top of the screening box, a screening plate fixedly installed on the top of the screening box, feeding slots spaced apart on the screening plate, the top of the feeding slots being chamfered, two symmetrically arranged long plates fixedly installed inside the screening box below the screening plate, a clamping plate corresponding to the feeding slots fixedly installed between the two long plates, movable plates fixedly installed at both ends of the two long plates and movably inserted into the screening box, a pushing plate fixedly installed perpendicularly to the side of the movable plate away from the long plate, a first rotating shaft rotatably installed on the outer wall of the screening box below the pushing plate, a cam fixedly installed on the first rotating shaft, a first motor fixedly installed on the outer wall of the screening box near the first rotating shaft, and the output end of the first motor coaxially fixedly installed on the first rotating shaft;

[0006] The screening box contains three mounting frames arranged sequentially from top to bottom. Each mounting frame contains a screen. Movable plates are mounted at both ends of each mounting frame. The two ends of each movable plate are movably inserted into the movable plate. One of the movable plates, on the same horizontal line, has a through slot at the end furthest from the screening box. A push block is movably inserted into the slot. A horizontally arranged rotating plate is fixed at the bottom of the push block. A second rotating shaft is fixed at the end of the rotating plate furthest from the push block.

[0007] Preferably, vertically arranged long rods are fixed at both ends of the upper surface of the push plate, and a limiting block is fixed at the upper end of the long rod on the outer wall of the screening box. The long rod moves through the limiting block, and a spring is sleeved on the long rod between the limiting block and the push plate.

[0008] Preferably, a second motor is fixedly installed on the outer wall of the screening box below each rotating plate, and the output end of the second motor is coaxially fixed on the second rotating shaft.

[0009] Preferably, the movable plate has sliding grooves on both sides, and the outer walls of both ends of the mounting frame are fixedly provided with sliding strips corresponding to the sliding grooves. The ends of the sliding strips are fixedly provided with insert rods, and the insert rods are stably inserted into the sliding grooves. The outside of the screening box has a through groove, and the mounting frame is inserted into the screening box through the through groove. The outer wall of the mounting frame is fixedly provided with a handle near the through groove.

[0010] Preferably, an inclined feeding plate is fixedly installed above both ends of each mounting frame inside the screening box.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. The first motor drives the cam to rotate, which in turn drives the push plate and the clamping plate to intermittently block the feed chute, controlling the intermittent feeding of fertilizer and preventing the raw materials from falling onto the screen all at once. This design reduces the amount of fertilizer that the screen needs to process instantly from the source, greatly reducing the probability of screen blockage, ensuring the normal operation of the screening process, and improving the continuity and stability of the screening.

[0013] 2. The second motor drives the rotating plate to rotate, causing the pusher block to push the moving plate and mounting frame to move repeatedly, thereby driving the screen to screen the fertilizer. This dynamic screening method allows fertilizer particles to have more full contact with the screen, which helps fertilizer particles smaller than the screen diameter to fall smoothly to the next layer, realizing multi-stage screening and ensuring that each layer can hold raw materials with particles of the same diameter, thus improving the accuracy and efficiency of screening.

[0014] 3. After screening, staff can directly pull the installation frame to detach it from the moving plate, making it convenient and quick to unload the raw materials of different diameter particles that have been screened. This simplifies the subsequent collection and processing procedures, reduces the difficulty and intensity of manual operation, and improves the overall convenience of the work. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the internal structure of the screening box of this utility model.

[0018] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0019] Figure 4 This utility model Figure 2 Enlarged structural diagram at point B.

[0020] Figure 5 This is a schematic diagram of the mounting frame structure of this utility model.

[0021] In the diagram: 1. Screening box; 11. Feed hopper; 12. Screening plate; 13. Feed trough; 14. Long plate; 15. Clamping plate; 16. Movable plate; 17. Push plate; 18. Cam; 19. First motor; 2. Limiting block; 21. Long rod; 22. Spring; 3. Mounting frame; 31. Screen; 32. Moving plate; 33. Movable trough; 34. Pushing block; 35. Rotating plate; 36. Second motor; 4. Through groove; 41. Sliding bar; 42. Insert rod; 43. Slide groove; 44. Handle; 45. Discharge plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example: Figure 1-5As shown, this utility model provides a multi-stage automatic screening device for organic fertilizer, including a screening box 1. A feeding hopper 11 is fixedly installed on the top of the screening box 1. A screening plate 12 is fixedly installed on the top of the screening box 1. A feeding trough 13 is provided on the screening plate 12 at intervals. The top of the feeding trough 13 is chamfered. Two symmetrically arranged long plates 14 are fixedly installed inside the screening box 1 below the screening plate 12. A clamping plate 15 corresponding to the feeding trough 13 is fixedly installed between the two long plates 14. Movable plates 16 are fixedly installed at both ends of the two long plates 14 and are movably inserted into the screening box 1. A push plate 17 is fixedly installed perpendicularly to the side of the movable plate 16 away from the long plate 14. A first rotating shaft is rotatably installed on the outer wall of the screening box 1 below the push plate 17. A cam 18 is fixedly installed on the first rotating shaft. A first motor 19 is fixedly installed on the outer wall of the screening box 1 near the first rotating shaft. The output end of the first motor 19 is coaxially fixed on the first rotating shaft.

[0024] Three mounting frames 3 are movably inserted inside the screening box 1, arranged sequentially from top to bottom. Screens 31 are installed inside the mounting frames 3, with the diameter of the screens 31 decreasing sequentially from top to bottom. Movable plates 32 are installed at both ends of the mounting frames 3, and the two ends of the movable plates 32 are movably inserted on the movable plates 32. A movable groove 33 is opened through one of the movable plates 32 on the same horizontal line at the end away from the screening box 1. A push block 34 is movably inserted inside the movable groove 33. A horizontally arranged rotating plate 35 is fixed at the bottom of the push block 34, and a second rotating shaft is fixed at the end of the rotating plate 35 away from the push block 34.

[0025] The upper surface of the push plate 17 is fixed with vertically arranged long rods 21 at both ends. The outer wall of the screening box 1 is fixed with a limiting block 2 at the upper end of the long rod 21. The long rod 21 moves through the limiting block 2. A spring 22 is sleeved on the long rod 21 between the limiting block 2 and the push plate 17. The purpose of the spring 22 is to make the push plate 17 move down quickly. This allows the long plate 14 to drive the clamping plate 15 to quickly disengage from the feed trough 13, avoiding the situation where the clamping plate 15 is inserted into the feed trough 13 and cannot disengage normally.

[0026] A second motor 36 is fixedly installed on the outer wall of the screening box 1 below each rotating plate 35. The output end of the second motor 36 is coaxially fixed on the second rotating shaft. The second motor 36 and the first motor 19 are mainly used to provide power for the operation of the device and facilitate operation by the staff.

[0027] The movable plate 32 has grooves 43 on both sides. The outer walls of both ends of the mounting frame 3 are fixed with slide bars 41 corresponding to the grooves 43. The ends of the slide bars 41 are fixed with insert rods 42, which are stably inserted into the grooves 43. The slide bars 41 are inserted into the grooves 43 on the movable plate 32, so that the movable plate 32 can move the mounting frame 3 together. The insert rods 42 further increase the stability of the connection between the mounting frame 3 and the two movable plates 32.

[0028] The screening box 1 has a through groove 4 on its outside. The mounting frame 3 is inserted into the screening box 1 through the through groove 4. A handle 44 is fixedly provided on the outer wall of the mounting frame 3 near the through groove 4. The through groove 4 allows the mounting frame 3 to move normally when the moving plate 32 moves, ensuring smooth operation. The handle 44 is also provided to facilitate the subsequent removal of the mounting frame 3 by the staff.

[0029] Inside the screening box 1, at the top of each of the two ends of the mounting frame 3, there is a fixed, inclined feeding plate 45. The feeding plate 45 is mainly to ensure that the falling raw materials fall into the screen 31 for drying.

[0030] Working principle: During use, the operator can put the raw materials to be screened into the top feed hopper 11 at once. Before this, the first motor 19 and the second motor 36 can be started in advance. The output end of the first motor 19 will drive the cam 18 to rotate. When the top of the cam 18 contacts the push plate 17, the push plate 17 will be pushed upward, thereby causing the push plate 17 to drive the long plate 14 and the clamping plate 15 to insert into the feed trough 13. At this time, the screening plate 12 will no longer drop fertilizer. As the cam 18 is driven away from the push plate 16, the cam 18 will be pushed upward. When plate 17 is pushed, plate 17 will be pulled down quickly by spring 22, causing plate 15 to directly and quickly disengage from feed chute 13. This allows the raw material accumulated on screening plate 12 to fall through feed chute 13 and contact screen 31. As the first motor 19 continuously drives cam 18 to rotate, it controls plate 15 to intermittently block feed chute 13, thereby controlling intermittent feeding from each bucket. This avoids the problem of raw material falling directly and concentratedly onto screen 31 at once, which would increase the blockage and ensure normal screening.

[0031] Once the raw material falls onto the screen 31 below, the second motor 36 starts and drives the rotating plate 35 to rotate continuously. At this time, the pushing block 34 fixed at the end of the rotating plate 35 will move continuously from one end of the movable groove 33 to the other end. During this process, the pushing block 34 will push the moving plate 32 to move back and forth repeatedly. The driven moving plate 32 will drive the mounting frame 3 to move back and forth repeatedly. At this time, the screen 31 will also be driven to screen the raw material on the screen 31. Specifically, particles smaller than the diameter of the screen 31 will fall to the next layer for multi-stage screening. As the screen 31 screens continuously, each layer will contain raw material with particles of the same diameter. Subsequently, the operator can stop the first motor 19 and the second motor 36. The operator can directly pull the mounting frame 3 away from the two moving plates 32 by the handle 44 to unload the raw material at the screening point on the mounting frame 3.

[0032] All standard parts used in this invention can be purchased from the market, and irregularly shaped parts can be customized according to the description and drawings. The specific connection methods of each part all adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art, and the circuit connections adopt conventional connection methods in the prior art, which will not be described in detail here.

[0033] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A multi-stage automatic screening device for organic fertilizer, comprising a screening box (1), characterized in that: A feeding hopper (11) is fixedly installed on the top of the screening box (1). A screening plate (12) is fixedly installed on the top inside the screening box (1). A feeding groove (13) is provided on the screening plate (12) at intervals. The top of the feeding groove (13) is chamfered. Two symmetrically arranged long plates (14) are fixedly installed inside the screening box (1) below the screening plate (12). A clamping plate (15) corresponding to the feeding groove (13) is fixedly installed between the two long plates (14). Each end is fixedly provided with a movable plate (16) and the movable plate (16) is movably inserted into the screening box (1). A push plate (17) is fixedly provided on the side of the movable plate (16) away from the long plate (14) and is perpendicular to it. A first rotating shaft is rotatably provided on the outer wall of the screening box (1) below the push plate (17). A cam (18) is fixedly provided on the first rotating shaft. A first motor (19) is fixedly provided on the outer wall of the screening box (1) near the first rotating shaft. The output end of the first motor (19) is coaxially fixed on the first rotating shaft. The screening box (1) is movably inserted with three mounting frames (3) arranged sequentially from top to bottom. The mounting frames (3) are equipped with screens (31). The two ends of the mounting frames (3) are equipped with movable plates (32). The two ends of the movable plates (32) are movably inserted on the movable plates (32). One of the movable plates (32) on the same horizontal line has a movable groove (33) through which one end away from the screening box (1). A push block (34) is movably inserted in the movable groove (33). A rotating plate (35) is fixedly arranged horizontally at the bottom of the push block (34). A second rotating shaft is fixedly provided at the end of the rotating plate (35) away from the push block (34).

2. The multi-stage automatic screening device for organic fertilizer as described in claim 1, characterized in that, The upper surface of the push plate (17) is fixed with vertically arranged long rods (21) at both ends. The outer wall of the screening box (1) is fixed with a limiting block (2) at the upper end of the long rod (21). The long rod (21) moves through the limiting block (2). A spring (22) is sleeved on the long rod (21) between the limiting block (2) and the push plate (17).

3. The multi-stage automatic screening device for organic fertilizer as described in claim 2, characterized in that, The outer wall of the screening box (1) is fixedly provided with a second motor (36) below each rotating plate (35), and the output end of the second motor (36) is coaxially fixed on the second rotating shaft.

4. The multi-stage automatic screening device for organic fertilizer as described in claim 3, characterized in that, The movable plate (32) has grooves (43) on both sides. The outer walls of both ends of the mounting frame (3) are fixed with slide bars (41) corresponding to the grooves (43). The ends of the slide bars (41) are fixed with insert rods (42) and the insert rods (42) are stably inserted into the grooves (43).

5. The multi-stage automatic screening device for organic fertilizer as described in claim 4, characterized in that, The screening box (1) has a through groove (4) on its outside. The mounting frame (3) is inserted into the screening box (1) through the through groove (4). A handle (44) is fixedly provided on the outer wall of the mounting frame (3) near the through groove (4).

6. The multi-stage automatic screening device for organic fertilizer as described in claim 5, characterized in that, The screening box (1) is fixed with a feeding plate (45) at both ends above each mounting frame (3) in an inclined manner.

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