Screening device for fertilizer processing

Abstract

The screening device for fertilizer processing comprises a screening box main body and a supporting frame, one side of the top of the screening box main body is connected with a feeding port, the bottom of the screening box main body is connected with a discharging port, and a first-stage filter screen frame, a second-stage filter screen frame and a third-stage filter screen frame are sequentially connected in the screening box main body from top to bottom; a gas distribution pipeline is arranged below the screening box body, the top of the gas distribution pipeline is connected with a plurality of gas guide pipes communicating with the inner bottom of the screening box body, and the gas distribution pipeline is connected with a dry hot gas input pipe. Compared with the prior art, the multi-stage screening device has the advantages that multi-stage screening operation can be carried out through the first-stage filter screen frame, the second-stage filter screen frame and the third-stage filter screen which are sequentially arranged from top to bottom, and meanwhile, the internal dryness and high temperature can be ensured through hot air conveying at the bottom; therefore, adhesion operation caused by too much internal moisture can be prevented.

Description

Technical Field

[0001] This utility model relates to the field of fertilizer processing technology, specifically to a screening device for fertilizer processing. Background Technology

[0002] Fertilizers are substances that provide one or more essential nutrients for plants, improve soil properties, and enhance soil fertility. They are one of the material bases for agricultural production and mainly include ammonium phosphate fertilizers, water-soluble fertilizers containing macronutrients, fertilizers containing micronutrients, bio-fertilizers, organic fertilizers, and multi-dimensional energy-concentrated organic fertilizers.

[0003] In the processing of some solid fertilizers, multi-stage screening is often required. Existing screening equipment is often a simple filter structure that cannot perform multi-stage screening. To perform multi-stage screening, multiple screening operations are required, resulting in relatively low screening efficiency. Moreover, the equipment is far from the input and is prone to sticking due to moisture, which can cause internal sticking or fertilizer sticking. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a screening device for fertilizer processing that can efficiently screen fertilizers in multiple stages, addressing the shortcomings mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a screening device for fertilizer processing, including a screening box body and a support frame, wherein a feeding port is connected to one side of the top of the screening box body and a discharge port is connected to the bottom, and a primary filter screen frame, a secondary filter screen frame and a tertiary filter screen frame are connected sequentially from top to bottom inside the screening box body.

[0006] The primary filter frame, secondary filter frame, and tertiary filter frame are arranged at an angle and staggered to each other. The inclined bottom ends of the primary filter frame, secondary filter frame, and tertiary filter frame are provided with material discharge ports. The bottom of the primary filter frame and the secondary filter frame are both connected to inclined receiving plates. The main body of the screening box is located at the bottom end of the receiving plates and the tertiary filter frame and has a material discharge port.

[0007] The screening box body is provided with a gas distribution pipe at the bottom. The top of the gas distribution pipe is connected to a plurality of air guide pipes that communicate with the bottom of the screening box body. The gas distribution pipe is also connected to a drying hot air input pipe.

[0008] Furthermore, the filters in the primary, secondary, and tertiary filter frames are arranged in ascending order of size.

[0009] Furthermore, the main body of the screening box is externally connected to a material guide pipe that matches the material outlet, and the outer side of the main body of the screening box is connected to a material guide plate that matches the material guide pipe.

[0010] A flow control valve is connected to the drying hot gas input pipe.

[0011] Furthermore, a filter screen with a matching air guide pipe is connected to the bottom of the screening box body, and an exhaust fan is connected to the top of the screening box body.

[0012] Furthermore, a rotating shaft is connected inside the main body of the screening box below the primary filter frame, the secondary filter frame, and the tertiary filter frame, and multiple vibration blocks are connected to the rotating shaft.

[0013] Furthermore, a drive box and a drive motor for driving multiple rotating shafts are connected to the outside of the main body of the screening box. The power end of the drive motor is directly connected to one of the rotating shafts, and the multiple rotating shafts extend into the drive box and are connected to a sprocket and chain drive assembly.

[0014] The advantages of this utility model compared with the prior art are as follows: This utility model can perform multi-stage screening operations by setting a primary filter frame, a secondary filter frame and a tertiary filter frame from top to bottom. At the same time, by setting a hot air conveyor at the bottom, it can ensure that the inside is dry and at a high temperature, thereby preventing too much internal moisture from causing sticking. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the first structure of a screening device for fertilizer processing.

[0016] Figure 2 This is a schematic diagram of the second structure of a screening device for fertilizer processing.

[0017] Figure 3 This is a first cross-sectional view of a screening device for fertilizer processing.

[0018] Figure 4 This is a second cross-sectional view of a screening device for fertilizer processing.

[0019] As shown in the figure: 1. Screening box body; 2. Feeding port; 3. Discharge port; 4. Primary filter screen frame; 5. Secondary filter screen frame; 6. Tertiary filter screen frame; 7. Receiving plate; 8. Discharge port; 9. Guide pipe; 10. Guide plate; 11. Gas distribution pipe; 12. Drying hot air input pipe; 13. Flow control valve; 14. Air guide pipe; 15. Filter screen; 16. Exhaust fan; 17. Support frame; 18. Rotating shaft; 19. Vibrating block; 20. Drive box; 21. Drive motor; 22. Sprocket and chain drive assembly; 23. Drop port. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings.

[0021] Combined with appendix Figure 1-4 A screening device for fertilizer processing includes a screening box body 1 and a support frame 17. The top side of the screening box body 1 is connected to a feeding port 2 and the bottom is connected to a discharge port 3. The screening box body 1 is provided with a primary filter screen frame 4, a secondary filter screen frame 5 and a tertiary filter screen frame 6 connected from top to bottom.

[0022] like Figure 3 As shown, the primary filter frame 4, secondary filter frame 5, and tertiary filter frame 6 are arranged at an alternating angle. The filter screens of the primary filter frame 4, secondary filter frame 5, and tertiary filter frame 6 are arranged from smallest to largest. The inclined bottom ends of the primary filter frame 4, secondary filter frame 5, and tertiary filter frame 6 are provided with material inlets 23. The bottom of the primary filter frame 4 and secondary filter frame 5 are both connected to inclined receiving plates 7. The screening box body 1 is located at the bottom end of the receiving plate 7 and the tertiary filter frame 6 and has a discharge port 8, i.e., a feeding port 2, where raw materials are added and first filtered through the primary filter frame 4. Smaller impurities or... Material falls onto the receiving plate 7 below the primary filter frame 4 and is discharged through the discharge port 8. Unfiltered material falls through the discharge port 23 at the bottom of the primary filter frame 4 to the top of the secondary filter frame 5, where it is filtered. Filtered material is discharged through the discharge port 8, while unfiltered material falls through the discharge port 23 to the top of the tertiary filter frame 6. Filtered material is discharged through the discharge port 3, and unfiltered material is discharged through the discharge port 8. The main body 1 of the screening box is externally connected to a guide pipe 9 that matches the discharge port 8. The main body 1 of the screening box is externally connected to a guide plate 10 that matches the guide pipe 9. The styles of the guide pipe 9 and guide plate 10 do not need to match... Figure 1 To achieve this, simply direct the materials to the location where they need to be stacked.

[0023] The main body 1 of the screening box is provided with a gas distribution pipe 11 at the bottom. The top of the gas distribution pipe 11 is connected to a plurality of air guide pipes 14 that communicate with the bottom of the screening box body 1. The gas distribution pipe 11 is connected to a dry hot air input pipe 12. In actual layout, the dry hot air input pipe 12 needs to be connected to an external dry hot air input device. Such devices are quite common, so they will not be described in detail. The dry hot air input pipe 12 is connected to a flow control valve 13. The bottom of the screening box body 1 is connected to a filter screen 15 that cooperates with the air guide pipe 14. The top of the screening box body 1 is connected to an exhaust fan 16. Dry hot air is input from the bottom, the flow rate is controlled by the flow control valve 13, and then the exhaust fan 16 is used to extract moisture from the top, thereby ensuring high-temperature drying inside and reducing stickiness.

[0024] Inside the main body 1 of the screening box, a rotating shaft 18 is connected below the primary filter frame 4, the secondary filter frame 5, and the tertiary filter frame 6. Multiple vibrating blocks 19 are connected to the rotating shaft 18. The rotating shaft 18, in conjunction with the multiple vibrating blocks 19, ensures rapid screening of the primary filter frame 4, the secondary filter frame 5, and the tertiary filter frame 6. A drive box 20 and a drive motor 21 are connected to the outside of the main body 1 of the screening box to drive the multiple rotating shafts 18. The power end of the drive motor 21 is directly connected to one of the rotating shafts 18. The multiple rotating shafts 18 extend into the drive box 20 and are connected to a sprocket and chain drive assembly 22. The sprocket and chain drive assembly 22 and the drive motor 21 ensure synchronous rotation of the multiple rotating shafts 18.

[0025] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A screening device for fertilizer processing, comprising a screening box body (1) and a support frame (17), wherein a feeding port (2) is connected to one side of the top of the screening box body (1), and a discharge port (3) is connected to the bottom, characterized in that: The main body (1) of the screening box is provided with a first-stage filter frame (4), a second-stage filter frame (5) and a third-stage filter frame (6) connected from top to bottom; The primary filter frame (4), secondary filter frame (5) and tertiary filter frame (6) are arranged at an angle and staggered. The primary filter frame (4), secondary filter frame (5) and tertiary filter frame (6) are provided with a material discharge port (23) at their inclined bottom ends. The primary filter frame (4) and secondary filter frame (5) are both connected to inclined receiving plates (7) at their bottom ends. The main body of the screening box (1) is provided with a discharge port (8) at the bottom ends of the receiving plate (7) and the tertiary filter frame (6). The screening box body (1) is provided with a gas distribution pipe (11) at the bottom. The top of the gas distribution pipe (11) is connected to a plurality of air guide pipes (14) that communicate with the bottom of the screening box body (1). The gas distribution pipe (11) is connected to a dry hot air input pipe (12).

2. The screening device for fertilizer processing according to claim 1, characterized in that: The filters in the primary filter frame (4), secondary filter frame (5) and tertiary filter frame (6) are arranged in ascending order of size.

3. The screening device for fertilizer processing according to claim 1, characterized in that: The main body (1) of the screening box is externally connected to a guide pipe (9) with a matching discharge port (8), and the outer side of the main body (1) of the screening box is connected to a guide plate (10) with a matching guide pipe (9).

4. The screening device for fertilizer processing according to claim 1, characterized in that: A flow control valve (13) is connected to the drying hot gas input pipe (12).

5. A screening device for fertilizer processing according to claim 1, characterized in that: The bottom of the screening box body (1) is connected to a filter screen (15) that is equipped with an air guide pipe (14), and the top of the screening box body (1) is connected to an exhaust fan (16).

6. The screening device for fertilizer processing according to claim 1, characterized in that: Inside the main body (1) of the screening box, a rotating shaft (18) is connected below the primary filter frame (4), the secondary filter frame (5) and the tertiary filter frame (6), and a plurality of vibration blocks (19) are connected on the rotating shaft (18).

7. A screening device for fertilizer processing according to claim 6, characterized in that: The main body (1) of the screening box is connected to a drive box (20) and a drive motor (21) for driving multiple rotating shafts (18) to rotate. The power end of the drive motor (21) is directly connected to one of the rotating shafts (18). The multiple rotating shafts (18) extend into the drive box (20) and are connected to a sprocket and chain drive assembly (22).

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