A fertilizer coating grading and screening device
By designing constraints and fixing mechanisms, the screening plates of the fertilizer coating agent grading and screening device can be quickly replaced, solving the problem of inconvenient screening plate replacement, improving the adaptability and flexibility of the equipment, and meeting diverse production needs.
Patent Information
- Application Number
- CN202521926449.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-08
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-08
AI Technical Summary
The screening plates of existing fertilizer coating agent grading and screening devices are not easy to replace, which limits the adaptability and flexibility of the equipment and makes it unable to meet diverse production needs.
A screening box including a constraint mechanism and a fixing mechanism was designed. The screening plate can be quickly replaced through the limit plate and pull plate structure, and the screening plate can be detached and fixed by the cooperation of the locking column and the tension spring.
It enables quick replacement of screening plates, improving the adaptability and flexibility of the equipment and meeting the production needs of different types of fertilizer coating agents.
Smart Images

Figure CN224673178U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of fertilizer coating agent technology, and relates to grading and screening, specifically a fertilizer coating agent grading and screening device. Background Technology
[0002] Fertilizer coating agent grading and screening devices are used in the agricultural and horticultural industries to grade and screen fertilizer coating agents to ensure their quality and uniformity, thereby improving fertilization efficiency. This device uses sieve plates of different sizes to classify fertilizer particles according to particle size, effectively separating substandard particles, reducing impurities, and improving product purity. Modern grading and screening devices are typically automated, capable of automatic feeding, screening, and discharging. They are suitable for various types of fertilizers, easy to operate, and convenient for daily maintenance, thus playing a vital role in improving fertilizer use efficiency and crop yield.
[0003] However, some existing fertilizer coating agent grading and screening devices have screen plates that are not easy to replace. Different types of fertilizer coating agents require screen plates with different aperture sizes. If replacement is inconvenient, the adaptability and flexibility of the equipment will be limited, making it unable to meet diverse production needs. Therefore, this problem needs to be solved. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a fertilizer coating agent grading and screening device. The technical problem this invention aims to solve is that the screening plates are not easy to replace. Different types of fertilizer coating agents require screening plates with different aperture sizes. Therefore, if replacement is inconvenient, the adaptability and flexibility of the equipment will be limited, making it unable to meet diverse production needs.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: A fertilizer coating agent grading and screening device includes a screening box. A top plate is fixedly connected to the top of the screening box and slidably connected to it. A feed inlet is opened on the top of the top plate. Constraint mechanisms for constraining the top plate are provided on both sides of the top plate. Four first storage slots are opened inside the screening box. The four first storage slots are arranged in pairs. Screening plates are slidably connected inside each pair of first storage slots. Limiting grooves are opened on both sides of each pair of screening plates. Fixing mechanisms for fixing the screening plates are provided inside each pair of limiting grooves. Two vibration motors are fixedly connected to the bottom of the screening box.
[0006] As a further embodiment of this utility model, the constraint mechanism includes two sliding grooves, both of which are slidably connected to one side of the top plate. Locking posts are slidably connected inside each of the two sliding grooves. The same second pull plate is fixedly connected to the surface of each locking post away from the screening box. Locking grooves are formed on the surface of the screening box near the two locking posts. The locking posts and locking grooves are mutually coordinated. Second tension springs are sleeved on the surface of each locking post near the second pull plate. One end of each second tension spring is fixedly connected to one side of the top plate, and the other end of each second tension spring is fixedly connected to one side of the second pull plate.
[0007] As a further embodiment of this utility model, the fixing mechanism includes a second storage groove, which is opened on one side of the first storage groove. Two connecting rods are slidably connected to one side of the second storage groove. The same limiting plate is fixedly connected to the surface of the two connecting rods near the limiting groove. The limiting plate is slidably connected inside the limiting groove. The same first pull plate is fixedly connected to the other end of the two connecting rods. A first tension spring is sleeved on the surface of the two connecting rods near the first pull plate. One end of each of the two first tension springs is fixedly connected to one side of the screening box. The other end of each of the two first tension springs is fixedly connected to one side of the first pull plate. Four support columns are fixedly connected to the bottom of the screening box. The four support columns are evenly arranged in a square shape. A spring is fixedly connected to the bottom of each of the four support columns. The same base is fixedly connected to the bottom of each of the four springs.
[0008] The beneficial effects of this utility model are as follows: 1. This utility model employs a technical solution of constraining the screening plate with a limiting plate, thus ensuring that the screening plate can be quickly replaced. This effectively solves the problem of inconvenient replacement of screening plates, as different types of fertilizer coating agents require screening plates with different aperture sizes. If replacement is inconvenient, the adaptability and flexibility of the equipment will be limited, making it impossible to meet diverse production needs. When the corresponding screening plate needs to be changed in size, the first pull plates on both sides of the corresponding screening plate are pulled. Since the first pull plates are connected to the limiting plate through connecting rods, pulling the first pull plates can move the limiting plate out of the screening plate, thereby releasing the constraint. Once the constraint is released, the screening plate can be removed. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the overall structure of a fertilizer coating agent grading and screening device proposed in this utility model. Figure 2 This is an exploded structural diagram of a fertilizer coating agent grading and screening device proposed in this utility model; Figure 3 This is a schematic diagram of the fixing mechanism of a fertilizer coating agent grading and screening device proposed in this utility model; Figure 4 for Figure 3 Enlarged structural diagram at point A in the diagram; Figure 5 This is a schematic diagram of the constraint mechanism of a fertilizer coating agent grading and screening device proposed in this utility model; Figure 6 for Figure 5 A magnified structural diagram at point B in the diagram.
[0010] In the diagram: 1. Screening box; 2. Screening plate; 3. Top plate; 101. Support column; 102. Spring; 103. Base; 104. First storage slot; 105. Second storage slot; 106. Vibration motor; 107. Locking slot; 201. Limiting slot; 202. Limiting plate; 203. Connecting rod; 204. First pull plate; 205. First tension spring; 301. Feed inlet; 302. Locking column; 303. Second pull plate; 304. Second tension spring; 305. Slide groove. Detailed Implementation
[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0012] Reference Figure 1 - Figure 6 A fertilizer coating agent grading and screening device includes a screening box 1. A top plate 3 is fixedly connected to the top of the screening box 1 and slidably connected to it. The top plate 3 has a feed inlet 301 on its top. Both sides of the top plate 3 are provided with constraint mechanisms for constraining the top plate 3. The screening box 1 has four first storage slots 104 inside, which are arranged in pairs. Screening plates 2 are slidably connected inside each pair of first storage slots 104. Limiting slots 201 are provided on both sides of each pair of screening plates 2. Both limiting slots 201 are provided with fixing mechanisms for fixing the screening plates 2. Two vibration motors 106 are fixedly connected to the bottom of the screening box 1. The setting of the limiting slots 201 can ensure that the screening plates 2 can be quickly replaced.
[0013] Preferably, the constraint mechanism includes two sliding grooves 305, both of which are slidably connected to one side of the top plate 3. Locking posts 302 are slidably connected inside each of the two sliding grooves 305. A second pull plate 303 is fixedly connected to the surface of each locking post 302 away from the screening box 1. Locking grooves 107 are formed on the surface of the screening box 1 near the two locking posts 302. The locking posts 302 and the locking grooves 107 are mutually engaged. Second tension springs 304 are fitted onto the surface of each locking post 302 near the second pull plate 303. One end of each second tension spring 304 is fixedly connected to one side of the top plate 3, and the other end is fixedly connected to one side of the second pull plate 303. The locking posts 302 constrain the top plate 3.
[0014] Preferably, the fixing mechanism includes a second storage slot 105, which is formed on one side of the first storage slot 104. Two connecting rods 203 are slidably connected to one side of the second storage slot 105. A common limiting plate 202 is fixedly connected to the surface of the two connecting rods 203 near the limiting slot 201. The limiting plate 202 is slidably connected inside the limiting slot 201. A common first pull plate 204 is fixedly connected to the other end of the two connecting rods 203. A first tension spring 205 is sleeved on the surface of each connecting rod 203 near the first pull plate 204. The first tension spring 205 is provided to allow the limiting plate 202 to be reset. One end of each of the two first tension springs 205 is fixedly connected to one side of the screening box 1, and the other end of each of the two first tension springs 205 is fixedly connected to one side of the first pull plate 204. Four support columns 101 are fixedly connected to the bottom of the screening box 1. The four support columns 101 are evenly arranged in a square shape. Springs 102 are fixedly connected to the bottom of each of the four support columns 101. The same base 103 is fixedly connected to the bottom of each of the four springs 102. The screening plate 2 can be fixed by the setting of the limiting plate 202.
[0015] Working principle: Four first storage slots 104 are provided inside the screening box 1, arranged in pairs. Each pair of first storage slots 104 contains a screening plate 2, and both screening plates 2 are connected to the screening box 1 via limiting plates 202, thus constraining the screening plates 2. When the corresponding screening plate 2 needs to be changed in size, the first pull plates 204 on both sides of the corresponding screening plate 2 are pulled. Because the first pull plates 204 are connected to the limiting plates 202 via connecting rods 203, pulling the first pull plates 204 allows the limiting plates 202 to be pulled out from inside the screening plate 2. The screen plate 2 is removed to release the constraint. Once the constraint is released, the screen plate 2 can be removed. When installing a new screen plate 2, insert it into the first receiving groove 104 and push it forward. Because the front end of the screen plate 2 is inclined, when the screen plate 2 contacts the limiting plate 202, it will squeeze the limiting plate 202 and cause it to contract. A limiting groove 201 is opened on one side of the screen plate 2, and the limiting groove 201 cooperates with the limiting plate 202. Thus, when the screen plate 2 moves into place, the limiting plate 202 will enter the limiting groove 201, thereby achieving the purpose of constraining the screen plate 2.
[0016] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A fertilizer coating agent grading and screening device, comprising a screening box (1), characterized in that, The top of the screening box (1) is fixedly connected to a sliding top plate (3). The top plate (3) has a feed inlet (301) on its top. Both sides of the top plate (3) are provided with constraint mechanisms for constraining the top plate (3). The screening box (1) has four first storage slots (104) inside. The four first storage slots (104) are arranged in pairs. Both sets of first storage slots (104) are slidably connected to screening plates (2). Both sides of the two screening plates (2) have limit slots (201). Both limit slots (201) are provided with fixing mechanisms for fixing the screening plates (2). The bottom of the screening box (1) is fixedly connected to two vibration motors (106).
2. The fertilizer coating agent grading and screening device according to claim 1, characterized in that, The constraint mechanism includes two slides (305), both slides (305) are slidably connected to one side of the top plate (3), and both slides (305) are slidably connected to locking posts (302). The same second pull plate (303) is fixedly connected to the surface of the two locking posts (302) away from the screening box (1). The surface of the screening box (1) near the two locking posts (302) is provided with locking grooves (107).
3. The fertilizer coating agent grading and screening device according to claim 2, characterized in that, The locking pins (302) and the locking grooves (107) are configured to cooperate with each other. The two locking pins (302) are each fitted with a second tension spring (304) on the surface of the side of the second pull plate (303). One end of each of the two second tension springs (304) is fixedly connected to one side of the top plate (3), and the other end of each of the two second tension springs (304) is fixedly connected to one side of the second pull plate (303).
4. The fertilizer coating agent grading and screening device according to claim 1, characterized in that, The fixing mechanism includes a second storage slot (105), which is opened on one side of the first storage slot (104). Two connecting rods (203) are slidably connected to one side of the second storage slot (105). The two connecting rods (203) are fixedly connected to the same limiting plate (202) on the surface of the side of the limiting slot (201). The limiting plate (202) is slidably connected inside the limiting slot (201).
5. The fertilizer coating agent grading and screening device according to claim 4, characterized in that, The other end of the two connecting rods (203) is fixedly connected to the same first pull plate (204). The surface of the two connecting rods (203) near the first pull plate (204) is fitted with a first tension spring (205). One end of the two first tension springs (205) is fixedly connected to one side of the screening box (1), and the other end of the two first tension springs (205) is fixedly connected to one side of the first pull plate (204).
6. The fertilizer coating agent grading and screening device according to claim 1, characterized in that, The bottom of the screening box (1) is fixedly connected to four support columns (101). The four support columns (101) are evenly arranged in a square shape. The bottom of each of the four support columns (101) is fixedly connected to a spring (102). The bottom of each of the four springs (102) is fixedly connected to the same base (103).