A fertilizer screening device
By designing a fertilizer screening device with lifting control, secondary screening of fertilizer was achieved, solving the problems of multiple devices and complex operation in the existing technology, improving screening efficiency and reducing costs.
Patent Information
- Application Number
- CN202522190947.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-16
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-10-16
AI Technical Summary
Existing technology requires the use of two devices for primary and secondary screening of fertilizers, which is complex and costly, and unqualified particles need to be processed multiple times.
Design a fertilizer screening device that uses a single device to achieve two-stage screening. The tilt of the screening and collecting components is controlled by a lifting component to achieve fertilizer grading and screening. Unqualified particles are directly discharged into different processes.
It simplifies the operating procedures, reduces the number of devices, improves screening efficiency, avoids multiple processing steps, and reduces costs.
Smart Images
Figure CN224926465U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of fertilizer processing technology, and specifically relates to a fertilizer screening device. Background Technology
[0002] In modern agriculture, the uniformity of fertilizer particles directly affects fertilization efficiency and crop absorption. Uneven particle size can easily lead to clogging of mechanical fertilization, imbalance in nutrient distribution, and a 15%-25% reduction in fertilizer utilization, and may also cause soil pollution. In fertilizer production, the granulation and drying processes can easily produce powder particles smaller than 0.5mm to lumps larger than 5mm. Organic fertilizers may also be mixed with impurities such as stones and plastics. Therefore, screening has become a key step in fertilizer refining during the production process.
[0003] In existing technology, after fertilizer undergoes primary screening, it is cooled and then subjected to secondary screening. Fine particles that fail screening are directly returned to the spray granulation process, while coarse particles that fail screening are crushed and enter the mixing process. Usually, two pieces of equipment are used to perform primary and secondary screening of fertilizer. Utility Model Content
[0004] The purpose of this invention is to provide a fertilizer screening device that overcomes the shortcomings of the prior art, which requires the use of two devices for primary and secondary screening of fertilizer.
[0005] The specific technical solution is as follows: A fertilizer screening device includes a screening box, which is equipped with a vibration motor. The screening box has a vertically arranged first screening section and a second screening section. The first screening section includes a first screening element and a first collecting element located below the first screening element. The second screening section includes a second screening element and a second collecting element located below the second screening section. The aperture of the screen holes of the first screening element is larger than that of the screen holes of the second screening element. The side of the screening box has openable and closable openings corresponding to the first screening section and the second screening section. A lifting element is installed and connected inside the screening box to control one side of the first screening element, the first collecting element, the second screening element, and the second collecting element to tilt upwards, so that the screened fertilizer can be discharged from the openings on the side of the screening box.
[0006] Preferably, a feed pipe is provided on the side of the screening box above the first screening component and the second screening component. The feed pipe is spaced a distance from the first screening component and the second screening component so that it will not interfere with the feed pipe when the first screening component and the second screening component are tilted upward.
[0007] Preferably, the first screening component, the first collecting component, the second screening component, and the second collecting component are connected to each other on one side of their openings, and can be raised and lowered synchronously on one side by the lifting component, so that they can tilt synchronously. The first screening component, the first collecting component, the second screening component, and the second collecting component are hinged to the screening box on the side of their openings.
[0008] Preferably, the lifting component is assembled and connected to the lower side of the second collecting component to lift the second collecting component. The lifting component is a telescopic cylinder, the bottom of which is connected to the bottom plate of the screening box, and the second collecting component overlaps with the telescopic cylinder.
[0009] Preferably, the first screening component, the first collecting component, the second screening component, and the second collecting component are hinged to each other on one side of their respective openings by connecting rods. The connecting rods and the screening components and collecting components form a parallelogram linkage mechanism, and the connecting rods always remain vertical.
[0010] Preferably, the opening includes openings that correspond one-to-one with the first screening component, the first collecting component, the second screening component, and the second collecting component. The screening box is connected to a liftable baffle at the opening position, and the opening and closing of the opening is controlled by controlling the lifting and lowering of the baffle.
[0011] Preferably, the screening box has a guide frame that gradually narrows outward and downward on the outside of the opening, so that the fertilizer falls outward along the guide frame when it is discharged.
[0012] Preferably, a support base is provided on the lower side of the screening box 52, and a buffer column is connected between the support base and the screening box.
[0013] Preferably, the upper sides of the first screening component, the first collecting component, the second screening component, and the second collecting component are all equipped with U-shaped frames, and the openings of the U-shaped frames are oriented towards the opening portion.
[0014] Compared with existing technologies, this utility model has the following beneficial effects: 1. This utility model is ingeniously designed to achieve two-stage screening of fertilizer through a single device. The two-stage screening can work simultaneously, simplifying the operation procedure.
[0015] 2. This utility model has a simple structure. The lifting of the lifting component can be controlled to simultaneously control the lifting of the collecting component and the screening component, thereby tilting the collecting component and the screening component. When the baffle plate at the opening is opened, the fertilizer can be discharged from the opening at the same time.
[0016] 3. This utility model provides an inlet on the side wall of the screening box, through which fertilizer enters the upper side of the first and second screening components, avoiding direct exposure of the fertilizer to the outside and reducing external pollution of the fertilizer. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. The elements or parts in the drawings are not necessarily drawn to scale.
[0018] Figure 1 This is a schematic diagram of the structure of the axial side of this utility model.
[0019] Figure 2 This is a side view of the structure of this utility model.
[0020] Figure 3 This is a schematic diagram of the internal structure of the screening box of this utility model.
[0021] Figure 4 This is a schematic diagram of the structure of the first screening section and the second screening section of this utility model.
[0022] Figure 5 This is a schematic diagram of the structure of the screening box assembly of this utility model.
[0023] Explanation of key figure labels: 1-Screening box, 11-Support base, 12-Buffer column, 2-First screening section, 21-First screening component, 22-First collection component, 3-Second screening section, 31-Second screening component, 32-Second collection component, 33-U-shaped frame, 4-Vibration motor, 5-Opening, 51-Baffle plate, 52-Guide frame, 6-Lifting component, 61-Support bar, 7-Infeed pipe, 8-Support rod. Detailed Implementation
[0024] 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.
[0025] In the description of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "top surface", "bottom surface", "inner", "outer", "inner side", "outer side", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0026] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If the terms "first," "second," and "third" are used in the description, they are for descriptive purposes and to distinguish technical features, and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.
[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will now be described based on its overall structure.
[0028] like Figures 1-5 As shown, a fertilizer screening device includes a screening box 1, which is equipped with a vibration motor 4. The screening box 1 has a first screening section 2 and a second screening section 3 arranged vertically. The first screening section 2 includes a first screening element 21 and a first collecting element 22 located below the first screening element 21. The second screening section 3 includes a second screening element 31 and a second collecting element 32 located below the second screening section 3. The aperture of the screen hole of the first screening element 21 is larger than that of the screen hole of the second screening element 31. The side of the screening box 1 has an openable and closable opening 5 corresponding to the first screening section 2 and the second screening section 3 respectively. A lifting element 6 is installed and connected inside the screening box 1 to control one side of the first screening element 21, the first collecting element 22, the second screening element 31 and the second collecting element 32 to tilt upward, so that the screened fertilizer can be discharged from the opening 5 on the side of the screening box 1.
[0029] It should be noted that the screening components mentioned in the text refer to the first screening component 21 and the second screening component 31, and the collecting components refer to the first collecting component 22 and the second collecting component 32. The vibration motor 4 is used to vibrate the screening box 1. When the screening box 1 vibrates, the first screening section 2 and the second screening section 3 respectively screen the fertilizer. At the same time, the first screening section 2 and the second screening section 3 can work simultaneously. Preferably, the first screening component 21, the first collecting component 22, the second screening component 31 and the second collecting component 32 are arranged sequentially from top to bottom. The second screening section 3 can also be located above the first screening section 2. After the fertilizer screening is completed, the opening 5 opens. Preferably, the lifting component 6 can be a single component or multiple components. When the lifting component 6 is a single component, the first screening component 21, the first collecting component 22, the second screening component 31 and the second collecting component 32 are linked together, driving one The lifting of one component drives the lifting of other components. When there are multiple lifting components 6, each lifting component 6 drives one component to lift. The lifting component 6 is used to lift one side of the first screening component 21, the first collecting component 22, the second screening component 31, and the second collecting component 32 to tilt them. The fertilizer is discharged from the opening and transported to different areas. The coarse particles screened by the first screening component 21 remain on the upper side of the first screening component 21 and enter the mixing process. The fine particles screened by the second screening component 31 fall above the second collecting component 32 and return directly to the spray granulation process. The remaining fertilizer particles screened by the first screening component 2 are cooled and sent to the second screening component 3. The fertilizer remaining above the second screening component 31 is qualified and enters the next process. The fine particles that fail the screening return directly to the spray granulation process, and the coarse particles that fail the screening are crushed and enter the mixing process.
[0030] Reference Figure 3 and Figure 5 A feed pipe 7 is provided on the side of the screening box 1 above the first screening element 21 and the second screening element 31. The feed pipe 7 is spaced a distance from the first screening element 21 and the second screening element 31 so that it will not interfere with the feed pipe 7 when the first screening element 21 and the second screening element 31 are tilted upwards. In this embodiment, the feed pipe 7 allows fertilizer to enter the screening box 1 for grading and screening.
[0031] Reference Figure 3The first screening component 21, the first collecting component 22, the second screening component 31, and the second collecting component 32 are connected to each other on the side opposite to the opening 5. They can be raised and lowered synchronously on one side by the lifting component 6, thus tilting synchronously. The lower sides of the first screening component 21, the first collecting component 22, the second screening component 31, and the second collecting component 32 near the opening 5 are hinged relative to the screening box 1. In this embodiment, the side wall of the screening box 1 is connected to the screening and collecting components. One side of the screening and collecting components can only rotate relative to the side wall of the screening box 1, but cannot move relative to the screening box 1. The side of the screening and collecting components opposite to the opening is raised and lowered by the lifting component 6.
[0032] Reference Figure 3 and Figure 5 The lifting component 6 is assembled and connected to the lower side of the second collecting component 32 to lift the second collecting component 32. The lifting component 6 is preferably an electric telescopic cylinder, the bottom of which is connected to the bottom plate of the screening box 1, and the second collecting component 32 overlaps with the telescopic cylinder. In this embodiment, the position and connection relationship of the lifting component 6 are further defined. Preferably, the output end of the telescopic cylinder is connected to a support bar 61 with an arc-shaped upper surface, which contacts the lower side of the second collecting component 32 to increase the contact area with the second collecting component 32.
[0033] The first screening component 21, the first collecting component 22, the second screening component 31, and the second collecting component 32 are hinged to each other on one side of the opening 5. The connecting rod 8 and the screening component and the collecting component form a parallelogram linkage mechanism, and the connecting rod 8 always remains vertical.
[0034] Reference Figure 4 In this embodiment, the connecting rod 8 allows one side of the screening component and the collecting component to rise and fall synchronously. When one screening component or the collecting component rises or falls, it can drive the other screening components and the collecting component to move synchronously.
[0035] Reference Figure 1 and Figure 5 The opening 5 includes openings corresponding one-to-one with the first screening component 21, the first collecting component 22, the second screening component 31, and the second collecting component 32. A liftable baffle plate 51 is connected to each opening in the screening box 1. The opening and closing of the openings are controlled by adjusting the lifting of the baffle plate 51. In this embodiment, preferably, the lifting of the baffle plate 51 can be controlled by an electric telescopic cylinder or a pneumatic cylinder. By controlling the extension and retraction of the electric telescopic cylinder or pneumatic cylinder, the lifting of the baffle plate 51 is controlled. After the baffle plate 51 moves upward, the lifting component 6 extends, causing one side of the first screening component 21, the first collecting component 22, the second screening component 31, and the second collecting component 32 to move upward simultaneously, thus tilting them and allowing fertilizer to be discharged simultaneously; there is no need to individually control the tilting of each screening component or collecting component.
[0036] Reference Figure 2The screening box 1 has a guide frame 52 that gradually narrows outward and downward connected to the outside of the opening. When the fertilizer is discharged, it falls outward along the guide frame 52. In this embodiment, the guide frame 52 is used to close the opening of the opening 5, so that the flow path of the fertilizer is reduced. A cloth bag can be connected to the outside of the guide frame 52, and a guide pipe can be connected to the cloth bag to extend the fertilizer to different areas.
[0037] Reference Figure 1 and Figure 5 A support base 11 is provided on the lower side of the screening box 1, and a buffer column 12 is connected between the support base 11 and the screening box 1. In this embodiment, the buffer column 12 is provided to buffer the vibration generated by the vibration motor 4.
[0038] Reference Figure 4 The upper sides of the first screening component 21, the first collecting component 22, the second screening component 31, and the second collecting component 32 are all fitted with U-shaped frame frames 33, with the openings of the U-shaped frame frames 33 facing the opening 5. In this embodiment, the U-shaped frame frames 33 serve to enclose the frames of the first screening component 21, the first collecting component 22, the second screening component 31, and the second collecting component 32, preventing fertilizer above the first screening component 21, the first collecting component 22, the second screening component 31, and the second collecting component 32 from falling into the gap between the screening component 21 or the collecting component 22 and the side wall of the screening box 1 during the screening process. The side of the screening component and the collecting component adjacent to the opening is arranged in close contact with the side wall of the screening box 1.
[0039] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art, after reading this specification, can make modifications, substitutions, variations, and various choices and changes to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, variations, and choices and changes are within the scope of the claims of the present invention and are protected by patent law.
Claims
1. A fertilizer screening device, characterized in that, The system includes a screening box (1) equipped with a vibration motor (4). The screening box (1) contains a vertically arranged first screening section (2) and a second screening section (3). The first screening section (2) includes a first screening component (21) and a first collecting component (22) located below the first screening component (21). The second screening section (3) includes a second screening component (31) and a second collecting component (32) located below the second screening section (3). The first screening component (21) has a sieve... The aperture of the hole is larger than the sieve hole of the second screening component (31). The side of the screening box (1) is provided with an opening (5) that is openable and closable, corresponding to the first screening part (2) and the second screening part (3). The screening box (1) is equipped with a lifting component (6) for controlling the first screening component (21), the first collecting component (22), the second screening component (31) and the second collecting component (32) to tilt upward on one side, so that the fertilizer that has been screened can be discharged from the opening (5) on the side of the screening box (1).
2. The fertilizer screening device according to claim 1, characterized in that, The side of the screening box (1) is provided with a feed pipe (7) on the upper side of the first screening component (21) and the second screening component (31). The feed pipe (7) is separated from the first screening component (21) and the second screening component (31) by a certain distance. When the first screening component (21) and the second screening component (31) are tilted upward, they will not interfere with the feed pipe (7).
3. The fertilizer screening device according to claim 1, characterized in that, The first screening component (21), the first collecting component (22), the second screening component (31), and the second collecting component (32) are connected to each other on one side of the opening (5). They can be raised and lowered synchronously on one side by the lifting component (6), so that they can tilt synchronously. The first screening component (21), the first collecting component (22), the second screening component (31), and the second collecting component (32) are hinged to the screening box (1) on the side of the first screening component (21), the first collecting component (22), the second screening component (31), and the second collecting component (32) near the opening (5).
4. The fertilizer screening device according to claim 3, characterized in that, The lifting component (6) is assembled and connected to the lower side of the second collecting component (32) to lift the second collecting component (32). The lifting component (6) is a telescopic cylinder. The bottom of the telescopic cylinder is connected to the bottom plate of the screening box (1). The second collecting component (32) overlaps with the telescopic cylinder.
5. The fertilizer screening device according to claim 4, characterized in that, The first screening component (21), the first collecting component (22), the second screening component (31) and the second collecting component (32) are hinged to each other on one side of the opening (5) with a connecting rod (8). The connecting rod (8) and the screening component and the collecting component form a parallelogram linkage mechanism. The connecting rod (8) always remains vertical.
6. The fertilizer screening device according to claim 1, characterized in that, The opening (5) includes openings that correspond one-to-one with the first screening component (21), the first collecting component (22), the second screening component (31), and the second collecting component (32). The screening box (1) is connected to a liftable baffle (51) at the opening position. The opening and closing of the opening is controlled by controlling the lifting of the baffle (51).
7. The fertilizer screening device according to claim 6, characterized in that, The screening box (1) has a guide frame (52) that gradually narrows outward and downward on the outside of the opening. When the fertilizer is discharged, it falls outward along the guide frame (52).
8. The fertilizer screening device according to claim 7, characterized in that, A support base (11) is provided on the lower side of the screening box (1), and a buffer column (12) is connected between the support base (11) and the screening box (1).
9. The fertilizer screening device according to claim 8, characterized in that, The upper sides of the first screening component (21), the first collecting component (22), the second screening component (31), and the second collecting component (32) are all equipped with U-shaped frame (33), and the opening of the U-shaped frame (33) is set towards the opening (5).