A urea sulfate spraying device for extrusion compound fertilizer

Abstract

This utility model relates to the field of compound fertilizer processing technology and discloses a device for extruding compound fertilizer and spraying urea sulfate solution. The device includes a fixed frame with a roller inside. A conveying assembly includes a docking groove at the bottom of the roller, a connecting frame inside the docking groove, and an annular groove on the inner wall of the docking groove. Multiple columns are installed on the inner wall of the roller, each containing a partition. A sliding groove is provided on the inner wall of the annular groove, with an electromagnet installed on one end of the sliding groove. A bottom plate and a slider are installed inside the sliding groove. A magnetic plate is installed on one side of the slider, and a piston is installed on the other side. A damping wheel is installed at the end of the slider near the bottom plate. This utility model, by designing a structure specifically for conveying urea sulfate solution, allows the solution to be directly injected into the raw materials within the roller, avoiding direct contact with the hopper wall during injection, reducing corrosion of the roller. Furthermore, the small, multiple injections prevent liquid accumulation and improve the uniformity of mixing with the compound fertilizer raw materials, ensuring the quality of granulation.

Description

Technical Field

[0001] This utility model relates to the field of compound fertilizer processing technology, specifically to a device for extruding compound fertilizer and spraying urea sulfate. Background Technology

[0002] Compound fertilizer (mixed fertilizer) is a type of fertilizer containing two or more major nutrients. By providing comprehensive nutritional support, improving fertilizer utilization, increasing crop yields and improving the quality of agricultural products, compound fertilizers also improve soil structure and promote sustainable agricultural development, making them an indispensable and important fertilizer in modern agricultural production.

[0003] Urea sulfate is a commonly used raw material for compound fertilizers, possessing excellent binding and granulation properties. In the production of urea sulfate compound fertilizers, sulfuric acid and urea are typically mixed to form a urea sulfate solution, which is then sprayed onto other fertilizer raw materials (such as monoammonium phosphate and potassium chloride) for granulation, thereby improving granulation rate, granule quality, and fertilizer performance.

[0004] When urea sulfate is sprayed during the mixing of fertilizer raw materials through a drum, the strong corrosiveness of urea sulfate will cause corrosion to the drum wall upon contact. Furthermore, the design of the nozzle angle or drum angle can lead to the accumulation of liquid inside the drum, which can exacerbate corrosion in localized areas, reduce the service life of the drum, and decrease the uniformity of mixing with the material, thus affecting the granulation quality. Utility Model Content

[0005] The purpose of this invention is to provide a device for spraying urea sulfate onto extruded compound fertilizer, in order to solve the problems mentioned in the background art, where the addition of urea sulfate during the mixing of compound fertilizer raw materials causes corrosion to the drum wall when urea sulfate comes into contact with it, and also causes liquid accumulation inside the drum, which exacerbates local corrosion, reduces the life of the drum, and affects the uniformity of raw material mixing.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a device for spraying urea sulfate onto extruded compound fertilizer, comprising a fixed frame, a roller inside the fixed frame, a conveying component for spraying urea sulfate inside the roller, the conveying component including a docking groove at the bottom of the roller, a connecting frame inside the docking groove, an annular groove on the inner wall of the docking groove, and multiple columns on the inner wall of the roller, each of the multiple columns having a partition inside;

[0007] The annular groove has a sliding groove on its inner wall. An electromagnet is installed on the inner wall of one end of the sliding groove. A base plate and a slider are installed inside the sliding groove. A magnetic plate is installed on one side of the slider and a piston is installed on the other side. A damping wheel is installed on the end of the slider near the base plate.

[0008] Preferably, the drum is located inside the fixed frame and is connected to the fixed frame by bolts. A motor is provided on the outside of one end of the drum, and the output end of the motor extends into the drum and is equipped with a stirring rod.

[0009] Preferably, the connecting frame is located inside the docking groove and is connected to the inner wall of the docking groove by bolts. The connecting frame is connected to the annular groove through a convex tube, and the other end of the connecting frame is connected to the urea sulfate storage tank through a connecting pipe.

[0010] Preferably, the array of multiple columns is distributed on the inner wall of the drum, with one end extending into one side of the annular groove, and the columns are through structures so that they communicate with the inner wall of the annular groove. The partition is rotatably connected to the inner wall of the column through a spring shaft.

[0011] Preferably, the annular groove has a U-shaped structure, and the sliding groove is located in the central area of ​​the annular groove and communicates with one side of the annular groove. The electromagnet is located at one end of the inner wall of the sliding groove and is magnetically connected to the magnetic plate on one side of the slider.

[0012] Preferably, both the base plate and the slider are located in the slide groove and are slidably connected to the inner wall of the slide groove. One end of the base plate extends through the slide groove into the annular groove. One side of the slider is connected to the piston via a connecting rod. The damping wheel is located at one end of the slider and is rotatably connected to the inner wall of the slider via a damping shaft, and is in contact with the base plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The urea sulfate solution is injected into the annular groove at the bottom of the drum through the connecting frame and the pump body. It flows in the annular groove and is injected into the other side between multiple columns. Then, the slider slides in the groove and the piston squeezes the annular groove, thereby forcing the urea sulfate solution into the column. It is then injected into the roller through the through hole in the column and mixed with the compound fertilizer raw materials in the drum. Since the outlet end of the column is between the raw materials in the roller, the sprayed urea sulfate solution will directly mix with other raw materials, reducing the contact area with the bin wall, improving the mixing effect and reducing the corrosion of the drum bin wall.

[0015] 2. A corrosion-resistant coating is applied to the area at the bottom of the drum where the urea sulfate solution is conveyed, thereby improving the corrosion resistance of the conveying area and ensuring the normal conveying and use of the urea sulfate solution. At the same time, multiple quantitative injections of the urea sulfate solution can effectively prevent liquid accumulation in the drum, and multiple small injections can improve the uniformity and mixing quality of mixing with other raw materials, thereby improving the granulation effect.

[0016] This invention, by setting up a special structure for conveying urea sulfate solution, can directly inject the urea sulfate solution into the raw materials inside the drum, avoiding direct contact with the silo wall during injection, reducing corrosion of the drum, and preventing liquid accumulation by injecting in small amounts multiple times, and improving the uniformity of mixing with compound fertilizer raw materials, thus ensuring the quality of granulation. Attached Figure Description

[0017] Figure 1 This is an overall isometric view of the present invention;

[0018] Figure 2 This is a diagram of the internal structure of the drum of this utility model;

[0019] Figure 3 This is a cross-sectional view of the inner wall of the drum of this utility model;

[0020] Figure 4 This is an enlarged view of part A of the present invention;

[0021] Figure 5 This is an enlarged view of part B of this utility model.

[0022] In the diagram: 1. Fixing frame; 2. Roller; 3. Connecting groove; 4. Connecting frame; 5. Annular groove; 501. Column; 502. Partition; 6. Slide; 601. Electromagnet; 7. Base plate; 8. Slider; 801. Magnet plate; 802. Damping wheel; 9. Piston. Detailed Implementation

[0023] 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.

[0024] All devices in this application adopt conventional models in the prior art, and the control method is through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art, which is common knowledge in the field, so this application will not explain it in detail.

[0025] Please see the appendix Figure 1-3As shown, a compound fertilizer spraying device includes a fixed frame 1, inside which is a roller 2 for concentrating the compound fertilizer raw materials. An external motor drives a stirring rod to rotate inside the roller 2, thereby mixing the compound fertilizer raw materials. Inside the roller 2 is a conveying assembly for spraying urea sulfate. The conveying assembly includes a docking groove 3 at the bottom of the roller 2 for positioning a connecting frame 4. The connecting frame 4 is installed inside the docking groove 3. The connecting frame 4 is connected to the docking groove 3 through a protruding pipe and is connected to a storage tank containing urea sulfate solution through a conveying pipe. The pump controls the spraying of urea sulfate solution. The solution is conveyed and flows in the conveying pipe and injected into the annular groove 5 through the connecting frame 4, generating pressure to make the urea sulfate solution flow. The annular groove 5 is set on the inner wall of the docking groove 3 to guide the angle of conveying the urea sulfate solution. Multiple columns 501 are set on the inner wall of the drum 2. The columns 501 are located inside the drum 2 to assist in dispersing the raw materials during compound fertilizer mixing. Each column 501 is equipped with a baffle 502 to close the column 501 in the normal state and allow only unidirectional rotation so that the inside of the column 501 is in a unidirectional channel, allowing the urea sulfate solution to be output from the column 501 and preventing the material from flowing back through the column 501.

[0026] The drum 2 is located inside the fixed frame 1 and is connected to the fixed frame 1 by bolts. A motor is installed on the outside of one end of the drum 2, and the output end of the motor extends into the drum 2 and is equipped with a stirring rod. The connecting frame 4 is located in the docking groove 3 and is connected to the inner wall of the docking groove 3 by bolts. The connecting frame 4 is connected to the annular groove 5 through a convex tube. The other end of the connecting frame 4 is connected to the urea sulfate storage tank through a connecting pipe. Multiple columns 501 are arrayed on the inner wall of the drum 2, and one end extends into the inner side of the annular groove 5. The columns 501 are through structures that allow them to communicate with the inner wall of the annular groove 5. The partition plate 502 is rotatably connected to the inner wall of the columns 501 through a spring shaft.

[0027] In this embodiment: the compound fertilizer raw materials in the drum 2 can be stirred and mixed by the rotation of the stirring rod driven by the motor, and the urea sulfate solution in the storage tank is transported in the conveying pipe through the pump body, passing through the connecting frame 4 and injected into the annular groove 5, flowing in the annular groove 5 and flowing to the area of ​​multiple columns 501 at the other end of the annular groove 5.

[0028] Example 2: This example is an improvement on Example 1. For details, please refer to [link / reference]. Figures 3-5The annular groove 5 has a sliding groove 6 on its inner wall, which is used to position the angle of the base plate 7 and the slider 8 when they slide. An electromagnet 601 is provided on the inner wall of one end of the sliding groove 6. When the electromagnet 601 is energized, it generates magnetic poles and is magnetically connected to the magnetic plate 801 at one end of the slider 8. The magnetic poles are changed by electrical control, thereby driving the slider 8 to slide in the sliding groove 6 through repulsion or attraction. The base plate 7 and the slider 8 are provided inside the sliding groove 6. One end of the base plate 7 extends into the annular groove 5. A magnetic plate 801 is provided on one side of the slider 8, and a piston 9 is provided on the other side. When the slider 8 is in the sliding groove 6, During internal sliding, the piston 9 can squeeze the slide groove 6 and the annular groove 5, thereby squeezing the urea sulfate solution on one side of the slide groove 6 and the annular groove 5 out of the column 501 and into the roller 2 through the top block partition 502. A damping wheel 802 is provided at one end of the slider 8 near the bottom plate 7. The damping wheel 802 contacts the bottom plate 7. When the slider 8 slides in the slide groove 6, the damping wheel 802 drives the bottom plate 7 to slide in the slide groove 6 and causes one end of the bottom plate 7 to extend into the annular groove 5, thereby separating the two sides of the annular groove 5 and improving the angle of the piston 9's extrusion force transmission.

[0029] The annular groove 5 has a U-shaped structure, and the slide 6 is located in the central area of ​​the annular groove 5 and is connected to one side of the annular groove 5. The electromagnet 601 is located at one end of the inner wall of the slide 6 and is magnetically connected to the magnetic plate 801 on one side of the slider 8. The base plate 7 and the slider 8 are both located in the slide 6 and are slidably connected to the inner wall of the slide 6. One end of the base plate 7 extends through the slide 6 into the annular groove 5. One side of the slider 8 is connected to the piston 9 through a connecting rod. The damping wheel 802 is located at one end of the slider 8 and is rotatably connected to the inner wall of the slider 8 through a damping shaft and is in contact with the base plate 7.

[0030] In this embodiment: when the urea sulfate solution is injected into the annular groove 5, it flows into the groove 6 because it is connected to the groove 6. Then, by controlling the change of the magnetic pole of the electromagnet 601 to repel the magnetic plate 801, the slider 8 is pushed to slide in the groove 6. At the same time, the bottom damping wheel 802 drives the bottom plate 7 to slide together, so that it extends into the annular groove 5 and separates the two ends of the annular groove 5. When the slider 8 slides, the piston 9 on one side slides synchronously in the groove 6, squeezing the urea sulfate solution, increasing the pressure on one side of the groove 6 and the annular groove 5, and thus causing the urea sulfate solution to be sprayed from the column 501 into the raw material in the drum 2. When the slider 8 and the bottom plate 7 contract, the pump body continues to inject the urea sulfate solution into the annular groove 5 to fill it again, thereby injecting the urea sulfate solution into the drum 2 in small amounts and multiple times.

[0031] A coating is applied to the annular groove 5, the chute 6, and the internal structural parts of the column 501 to improve corrosion resistance and enhance the performance of the conveying structure.

[0032] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for spraying urea sulfate onto extruded compound fertilizer, comprising a fixed frame (1), wherein a roller (2) is disposed inside the fixed frame (1), and a conveying assembly for spraying urea sulfate is disposed inside the roller (2), characterized in that: The conveying assembly includes a docking groove (3) disposed at the bottom of the roller (2), a connecting frame (4) disposed inside the docking groove (3), an annular groove (5) disposed on the inner wall of the docking groove (3), and multiple columns (501) disposed on the inner wall of the roller (2), with partitions (502) disposed inside each of the multiple columns (501). The inner wall of the annular groove (5) is provided with a sliding groove (6), and an electromagnet (601) is provided on the inner wall of one end of the sliding groove (6). A base plate (7) and a slider (8) are provided inside the sliding groove (6). A magnetic plate (801) is provided on one side of the slider (8), and a piston (9) is provided on the other side. A damping wheel (802) is provided on the end of the slider (8) near the base plate (7).

2. The extrusion compound fertilizer spraying urea sulfate device according to claim 1, characterized in that: The drum (2) is located inside the fixed frame (1) and is connected to the fixed frame (1) by bolts. A motor is provided on the outside of one end of the drum (2), and the output end of the motor extends into the drum (2) and is equipped with a stirring rod.

3. The extrusion compound fertilizer spraying urea sulfate device according to claim 1, characterized in that: The connecting frame (4) is located inside the docking groove (3) and is connected to the inner wall of the docking groove (3) by bolts. The connecting frame (4) is connected to the annular groove (5) through a convex tube. The other end of the connecting frame (4) is connected to the urea sulfate storage tank through a connecting pipe.

4. The extrusion compound fertilizer spraying urea sulfate device according to claim 1, characterized in that: Multiple columns (501) are arrayed on the inner wall of the roller (2), with one end extending into the inner side of the annular groove (5). The columns (501) are through structures that allow them to communicate with the inner wall of the annular groove (5). The partition (502) is rotatably connected to the inner wall of the columns (501) via a spring shaft.

5. The extrusion compound fertilizer spraying urea sulfate device according to claim 1, characterized in that: The annular groove (5) has a U-shaped structure, and the slide groove (6) is located in the central area of ​​the annular groove (5) and is connected to one side of the annular groove (5). The electromagnet (601) is located at one end of the inner wall of the slide groove (6) and is magnetically connected to the magnetic plate (801) on one side of the slider (8).

6. The extrusion compound fertilizer spraying urea sulfate device according to claim 5, characterized in that: The base plate (7) and the slider (8) are both located in the groove (6) and are slidably connected to the inner wall of the groove (6). One end of the base plate (7) extends through the groove (6) into the annular groove (5). One side of the slider (8) is connected to the piston (9) through a connecting rod. The damping wheel (802) is located at one end of the slider (8) and is rotatably connected to the inner wall of the slider (8) through a damping shaft, and is in contact with the base plate (7).

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