Organic fertilizer screening device

Abstract

The utility model relates to the technical field of organic fertilizer processing equipment, and discloses an organic fertilizer screening device which comprises a drying box and a screening box. A feeding hole is formed in the top end of the drying box, and an air inlet and an air outlet are respectively formed in two sides; blades are obliquely and crossly arranged on the inner wall of the drying box from top to bottom; the blades are connected with the inner wall of the drying box through rotating pins; a material transferring opening is formed between the drying box and the screening box; a plurality of sections of screens which are distributed in a step shape are obliquely and downwards arranged in the screening box; a discharge hole is correspondingly formed right below each section of screen mesh; the hole diameter of the screen is gradually increased from top to bottom along with the position of the screen. The organic fertilizer is firstly dried, so that the water content of the organic fertilizer is effectively reduced, the flowability of the dried organic fertilizer particles is enhanced, the dried organic fertilizer particles can pass through a screen more uniformly, accurate particle size grading is realized, the tedious step of independently drying the organic fertilizer in the traditional process is avoided, and the production period is shortened.

Description

Technical Field

[0001] This utility model relates to the technical field of organic fertilizer processing equipment, specifically to an organic fertilizer screening device. Background Technology

[0002] Organic fertilizers, as an important agricultural resource, are widely used for soil improvement and crop growth promotion. However, organic fertilizers typically contain high moisture content during production. This moisture can cause fertilizer particles to clump together, clogging screens, reducing screening efficiency, and even affecting the normal operation of the equipment. Furthermore, excessively moist organic fertilizers tend to adhere to the screens and the inner walls of the equipment during screening, further complicating the screening process and resulting in unsatisfactory screening effects, making it difficult to achieve precise particle size classification.

[0003] Most existing screening devices lack adaptability to materials with high moisture content. Although some devices attempt to improve screening efficiency by increasing screen vibration frequency or using multi-layer screens, these methods often fail to fundamentally solve the problems of adhesion and clogging caused by moisture. Therefore, there is an urgent need for a screening device that can effectively handle organic fertilizers with high moisture content. Utility Model Content

[0004] The purpose of this invention is to provide an organic fertilizer screening device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following solution:

[0006] This utility model provides an organic fertilizer screening device, including a drying box and a screening box; the top of the drying box is provided with a feed inlet, and the two sides are respectively provided with an air inlet and an air outlet; the inner wall of the drying box is provided with blades arranged diagonally from top to bottom; the blades are connected to the inner wall of the drying box by rotating pins; a transfer port is provided between the drying box and the screening box; several sections of screen mesh are arranged diagonally downward in a stepped manner inside the screening box; a discharge port is provided directly below each section of screen mesh; the aperture of the screen mesh gradually increases from top to bottom as the screen mesh position changes.

[0007] As the organic fertilizer rolls down the inclined screen, it first passes through a small-aperture screen and then through a large-aperture screen. This avoids clogging when the organic fertilizer passes through the small-aperture screen all at once, and enables automatic grading by particle size. Organic fertilizers of different particle sizes are discharged from the corresponding outlets, which facilitates subsequent classification, utilization, or packaging.

[0008] In one feasible implementation, the blades are helical blades.

[0009] The inclined, cross-shaped blades help the organic fertilizer fall downwards under gravity. The rotation of the blades increases the contact area between the organic fertilizer and the hot air, improving drying efficiency. At the same time, the spiral blades, with their continuous curved surface structure, effectively propel the organic fertilizer downwards and further break it up, preventing it from piling up or clumping in the drying chamber.

[0010] In one feasible implementation, the number of segments in the sieve is no less than 3.

[0011] In one feasible implementation, a waste outlet is provided on the outer side of the final screen.

[0012] Large organic fertilizer particles trapped on the screen are recycled through the waste residue outlet.

[0013] In one feasible implementation, a vibration mechanism is provided on the underside of each section of the screen.

[0014] By setting up a vibration mechanism, the organic fertilizer is made to move and disperse quickly on the screen surface, avoiding the accumulation of organic fertilizer or clogging of the screen holes, thereby improving the screening effect.

[0015] By installing a vibration mechanism under each section of the screen, the screening effect can be optimized by adjusting the amplitude and frequency of the vibration mechanism under different screens.

[0016] In one feasible implementation, the vibration mechanism is equipped with a protective cover.

[0017] Installing a protective cover around the vibration mechanism can prevent organic fertilizer from falling directly into the vibration mechanism and affecting its operation.

[0018] In one feasible implementation, the protective cover is fixedly connected to the underside of the screen.

[0019] In one feasible implementation, the tilt angle between the screen and the horizontal line is 5° to 30°, and the tilt angle can also be adjusted according to actual needs.

[0020] In one feasible implementation, the outer wall of the drying oven is equipped with a vibration mechanism.

[0021] By installing a vibration mechanism on the outer wall of the drying chamber, organic fertilizer is prevented from adhering to the leaves, and the falling speed of the organic fertilizer can be controlled by adjusting the amplitude and frequency of the vibration mechanism.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] This invention provides an organic fertilizer screening device that effectively reduces the moisture content of organic fertilizer by first drying it. The dried organic fertilizer particles have enhanced flowability and can pass through the screen more evenly, achieving precise particle size classification. This avoids the cumbersome step of separately drying organic fertilizer in traditional processes and shortens the production cycle. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the organic fertilizer screening device of this utility model;

[0025] In the diagram, 1-drying box, 2-screening box, 11-feed inlet, 12-air inlet, 13-air outlet, 14-blade, 15-rotating pin, 21-transfer port, 22-screen, 23-discharge port, 24-waste outlet, 25-vibration mechanism. Detailed Implementation

[0026] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0027] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the indicated position or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] Example 1

[0029] like Figure 1As shown, this application provides an organic fertilizer screening device, including a drying chamber 1 and a screening box 2 located below the drying chamber 1; the top of the drying chamber 1 is provided with a feed inlet 11, and the two sides are respectively provided with an air inlet 12 and an air outlet 13; the inner wall of the drying chamber 1 is provided with spiral blades 14 arranged obliquely and crosswise from top to bottom, and the spiral blades 14 are connected to the inner wall of the drying chamber 1 by rotating pins 15. The obliquely and crosswise blades 14 can help the organic fertilizer fall downward under the action of gravity. Through the rotation of the blades 14, the contact area between the organic fertilizer and the hot air is increased, thereby improving the drying efficiency. At the same time, the spiral blades 14, due to their continuous curved surface structure, can effectively push the organic fertilizer downward and further disperse the organic fertilizer, preventing the organic fertilizer from accumulating or clumping in the drying chamber 1. The outer wall of the drying chamber 1 is also provided with a vibration mechanism, which helps to prevent the organic fertilizer from adhering to the blades 14, and the falling speed of the organic fertilizer can be controlled by adjusting the amplitude and frequency of the vibration mechanism. A transfer port 21 is provided between the drying chamber 1 and the screening chamber 2. Inside the screening chamber 2, several segments of screens 22 are arranged in a stepped pattern, tilted downwards. The inclination angle between the screens 22 and the horizontal line is 5° to 30°, and can be adjusted according to actual needs. There are at least three segments of screen 22, arranged from top to bottom as the first, second, and third segments. The transfer port 21 is located directly above the first segment of screen. The dried organic fertilizer rolls down naturally by gravity, passing through each segment of screen 22 in sequence. A vibration mechanism 25 is installed under each segment of screen 22, and a protective cover is fixedly connected to the underside of the screen 22. The vibration mechanism 25 promotes rapid movement and dispersion of the organic fertilizer on the screen surface, preventing accumulation or clogging of the screen holes, thereby improving the screening effect. By installing the vibration mechanism 25 under each segment of screen 22, the screening effect can be optimized by adjusting the amplitude and frequency of the vibration mechanism 25 under different screens 22. A protective cover is installed outside the vibration mechanism 25 to prevent organic fertilizer from falling directly into the vibration mechanism 25 and affecting its operation. Each section of screen 22 has a corresponding discharge port 23 directly below it; the aperture of the screen 22 gradually increases from top to bottom as it moves along the inclined screen 22. As the organic fertilizer rolls down the inclined screen 22, it first passes through the small-aperture screen 22 and then through the large-aperture screen 22, preventing blockage caused by the organic fertilizer passing through the small-aperture screen 22 all at once. This achieves automatic grading by particle size, with organic fertilizer of different particle sizes discharged from the corresponding discharge port 23 for subsequent classification, utilization, or packaging. A waste outlet 24 is provided on the outer side of the final section of screen 22, through which large particles of organic fertilizer trapped on the screen 22 are recycled.

[0030] The working principle of this invention is as follows: Organic fertilizer is fed into the drying chamber through the inlet and gradually falls onto different leaves under gravity, reducing the moisture content of the organic fertilizer. The dried organic fertilizer particles have increased fluidity and can pass through the screen more evenly after passing through the transfer port. On the inclined screen, the organic fertilizer particles first pass through the small-aperture screen during the rolling process, and then through the gradually increasing-aperture screen, achieving automatic grading according to particle size. Organic fertilizer particles of different sizes will be discharged separately from the corresponding outlets, facilitating subsequent classification, utilization, or packaging.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An organic fertilizer screening device, characterized in that, The device includes a drying chamber and a screening chamber. The drying chamber has a feed inlet at the top and an air inlet and an air outlet on both sides. The inner wall of the drying chamber is decorated with blades arranged diagonally from top to bottom. The blades are connected to the inner wall of the drying chamber by rotating pins. A transfer port is provided between the drying chamber and the screening chamber. The screening chamber has several segments of screens arranged diagonally downwards in a stepped pattern. A discharge port is provided directly below each segment of screen. The aperture of the screens gradually increases from top to bottom as the screen position increases.

2. The organic fertilizer screening device according to claim 1, characterized in that, The blades are helical blades.

3. The organic fertilizer screening device according to claim 1, characterized in that, The screen has at least three segments.

4. The organic fertilizer screening device according to claim 1, characterized in that, Waste outlet is provided on the outer side of the final section of the screen.

5. The organic fertilizer screening device according to claim 1, characterized in that, Each section of the screen is equipped with a vibration mechanism on its underside.

6. The organic fertilizer screening device according to claim 5, characterized in that, The vibration mechanism is equipped with a protective cover.

7. The organic fertilizer screening device according to claim 6, characterized in that, The protective cover is fixedly connected to the lower side of the screen.

8. The organic fertilizer screening device according to claim 1, characterized in that, The inclination angle between the screen and the horizontal line is 5° to 30°.

9. The organic fertilizer screening device according to claim 1, characterized in that, The outer wall of the drying oven is equipped with a vibration mechanism.

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