Screening device for grain processing
By designing screening plates, guiding components, and a screen system, the problem of low efficiency in traditional screening devices when screening grains of different sizes has been solved, achieving efficient and uniform grain screening results.
Patent Information
- Application Number
- CN202520422242.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2026-04-07
- Estimated Expiration
- 2035-03-11
AI Technical Summary
Traditional screening devices are inefficient when screening grains of different sizes, and frequent screen replacements affect work efficiency.
A screening device including a screening plate, a guide assembly, a screen, and a sprocket drive system was designed. The guide assembly guides the grains into screens of different diameters. The screening accuracy is controlled by the rotation of the screening plate and the size of the screen. The screening uniformity and efficiency are improved by combining a dispersion block and a collection cylinder.
It achieves efficient screening of grains of different sizes, improves screening efficiency and accuracy, reduces grain spillage and loss, and enhances screening uniformity.
Smart Images
Figure CN224087266U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of grain processing technology, and specifically to a screening device for grain processing. Background Technology
[0002] In the grain processing industry, screening devices play a crucial role, serving as key equipment for effectively classifying grains according to different particle sizes. The grain screening process typically involves multiple stages, each stage separating grains of different sizes according to set standards, thereby achieving fine classification of the grains.
[0003] Nevertheless, traditional screening devices have certain limitations in practical applications. These devices are often only suitable for screening grains of a fixed size, which greatly limits their flexibility and efficiency. When faced with the need to screen grains of different sizes, operators have to frequently change the screens, a process that not only wastes valuable time but also significantly impacts overall work efficiency due to the frequent changes. Utility Model Content
[0004] In view of this, the present invention provides a screening device for grain processing, which can improve the efficiency of screening grains of different sizes.
[0005] To solve the above-mentioned technical problems, this utility model provides a grain processing screening device, including a mounting shell and a screening assembly. The screening assembly includes a screening plate rotatably connected to the bottom of the mounting shell. Both the screening plate and the mounting shell are circular in shape, and the axis of the screening shell and the axis of the mounting shell are coincident. Multiple screens are arranged in a circular array around the center of the screening plate, and the screen opening diameters of the screens decrease sequentially. A guide assembly for guiding the grains to fall is provided in the center of the mounting shell, which can effectively improve the efficiency of screening grains of different sizes.
[0006] The center of the protrusion has a slit, the shape of which matches the shape of the sieve; thus ensuring that the grain can accurately enter the sieve.
[0007] The upper side of the protrusion is an inner arc surface, and the side of the inner arc surface closer to the sluice is lower than the side farther away from the sluice; this can guide the grain to gather towards the sluice, reducing the scattering and loss of grain during the screening process.
[0008] The upper side of the protrusion is fixedly connected to multiple dispersed blocks arranged in a ring array around the inner arc surface; this helps to prevent grains from becoming overly concentrated during the screening process, thereby improving the uniformity of screening.
[0009] The screening assembly also includes a support plate fixedly connected to one side of the mounting shell. Both the bottom of the support plate and the bottom of the screening plate are fixedly connected to sprockets, and the two sprockets are connected by chain drive; that is, the adjacent sprockets are driven to rotate, and the screening plate is driven to rotate by the chain drive.
[0010] A collection cylinder is fixedly connected to the bottom of the screening plate, and an avoidance opening is provided on one side of the collection cylinder; this can effectively gather the grains.
[0011] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:
[0012] 1. By setting up a screening plate, the efficiency of screening grains of different sizes can be effectively improved.
[0013] 2. By controlling the rotation speed of the screening plate and the size of the screen, the screening accuracy of grains can be precisely controlled.
[0014] 3. When the grains fall, they are initially dispersed by the dispersion blocks in different areas, which helps prevent the grains from becoming overly concentrated during the screening process, thereby improving the uniformity of screening. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of a grain processing screening device according to the present invention;
[0016] Figure 2 This is a structural schematic diagram of the present invention viewed from below;
[0017] Figure 3 This is a schematic diagram of the structure of the screening component of this utility model;
[0018] Figure 4 This is a cross-sectional view of the mounting shell of this utility model;
[0019] Figure 5 This is a schematic diagram of the structure of the boss of this utility model.
[0020] Explanation of reference numerals in the attached figures:
[0021] 100. Mounting housing; 101. Collection cylinder;
[0022] 200. Screening component; 201. Screening plate; 202. Screen; 203. Support plate; 204. Sprocket; 205. Chain;
[0023] 300. Guide component; 301. Bump; 302. Slot; 303. Dispersion block; Detailed Implementation
[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-5 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.
[0025] like Figure 1-5 As shown: This embodiment provides a grain processing screening device, including a mounting shell 100 and a screening component 200. The screening component 200 includes a screening plate 201 rotatably connected to the bottom of the mounting shell 100. Both the screening plate 201 and the mounting shell 100 are circular in shape. The axis of the screening shell and the axis of the mounting shell 100 are coincident. A plurality of screens 202 are provided in the middle of the screening plate 201, arranged in a ring array around the middle of the screening plate 201. The diameter of the screen opening of the screens 202 decreases sequentially. A guide component 300 for guiding the grain to fall is provided in the middle of the mounting shell 100.
[0026] During screening, grains fall into the mounting shell 100 and are then guided by the guide assembly 300 to a smaller diameter screen 202. The smaller grains pass through this screen 202 and flow out of the mounting shell 100. As the grains are screened and the screening plate 201 rotates continuously, screens 202 of different diameters sequentially enter the screening area, thus achieving grain grading. During screening, larger grain particles are retained on the screening plate 201, while smaller grain particles fall through the screens 202, achieving grain separation. Grading the grains using screens 202 of different diameters not only improves screening efficiency but also allows for precise control of screening accuracy by adjusting the rotation speed of the screening plate 201 and the size of the screens 202. Furthermore, the design of the screening plate 201 effectively improves the efficiency of screening grains of different sizes.
[0027] Guide component 300, etc. Figure 1 , 5 As shown,
[0028] The guide assembly 300 includes a protrusion 301 fixedly connected to the middle of the mounting housing 100, and the upper side of the protrusion 301 is a slope.
[0029] When grains fall onto the protrusion 301, the inclined surface effectively guides them, allowing them to slide along the upper side of the protrusion 301 towards the screening plate 201 as they fall. This ensures that the grains are effectively distributed on the screening plate 201, improving screening efficiency.
[0030] Leakage 302 Figure 1 , 5 As shown,
[0031] A hole 302 is provided in the middle of the protrusion 301. The shape of the hole 302 is consistent with the shape of the screen 202. The bottom of the protrusion 301 is attached to the top of the screening plate 201.
[0032] When grains fall onto the protrusion 301, because the opening 302 in the middle of the protrusion 301 is shaped to match the screen 202, the grains will pass through the opening 302 and enter the screen 202 on the screening plate 201. The opening 302 ensures that the grains can accurately enter the screen 202, while defining the screening area, thereby improving the accuracy of screening.
[0033] Inner arc surface, as Figure 1 , 5 As shown,
[0034] The upper side of the protrusion 301 is an inner arc surface, and the side of the inner arc surface near the outlet 302 is lower than the side away from the outlet 302.
[0035] The inner curved surface guides the grains as they fall along the inclined plane, converging them towards the opening 302. This ensures the grains pass smoothly through the opening 302 and enter the screen 202 on the screening plate 201. The design of the inner curved surface helps optimize the grain flow path and reduces grain spillage and loss during the screening process.
[0036] Dispersed block 303, such as Figure 1 , 5 As shown,
[0037] The upper side of the protrusion 301 is provided with multiple dispersed blocks 303 arranged in a ring array around the inner arc surface, and each dispersed block 303 is a sphere.
[0038] As the grains fall, they undergo initial dispersion by the dispersion blocks 303 in different areas. This helps prevent the grains from becoming overly concentrated during the screening process, thereby improving the uniformity and efficiency of screening. This ensures that the grains are more evenly distributed on the screening plate 201 as they fall, which is beneficial for subsequent screening processes.
[0039] Support plate 203 Figure 1 , 2 As shown in Figures 3 and 4,
[0040] The screening assembly 200 also includes a support plate 203 fixedly connected to one side of the mounting housing 100. Both the bottom of the support plate 203 and the bottom of the screening plate 201 are fixedly connected to sprockets 204. The two sprockets 204 are connected by a chain 205. An adjustment motor is fixedly connected to the top of the support plate 203. The output shaft of the adjustment motor is fixedly connected to the middle of the adjacent sprockets 204.
[0041] When the screening plate 201 needs to be adjusted, the operation of the adjustment motor can drive the adjacent sprocket 204 to rotate. Through the transmission of the chain 205, the screening plate 201 is driven to rotate, so that different screens 202 can enter the screening area at the bottom of the opening 302 in a controllable manner.
[0042] Collection tube 101 Figure 2 As shown,
[0043] A collection cylinder 101 is fixedly connected to the bottom of the screening plate 201. The collection cylinder 101 is conical, and the bottom diameter of the collection cylinder 101 is smaller than the top diameter. An avoidance opening is provided on one side of the collection cylinder 101.
[0044] After the grains are screened, they can be effectively gathered by the collecting cylinder 101. As screening continues, the conical design of the collecting cylinder 101 helps to concentrate the screened grains together, facilitating subsequent collection and transportation. The clearance opening provides clearance for the chain 205's transmission. Simultaneously, the support plate 203 is located opposite the sluice gate 302, so the chain 205 does not pass through the bottom of the sluice gate 302 and will not affect the screening.
[0045] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 according to the specific circumstances.
[0046] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.
Claims
1. A screening device for grain processing, characterized in that: The device includes a mounting shell (100) and a screening assembly (200). The screening assembly (200) includes a screening plate (201) disposed at the bottom of the mounting shell (100). The screening plate (201) has a plurality of screens (202) arranged in a ring array in the middle. The screen diameter of the screens (202) decreases sequentially. The mounting shell (100) has a guide assembly (300) in the middle for guiding the grain to fall.
2. The grain processing screening device as described in claim 1, characterized in that: The guide assembly (300) includes a protrusion (301) disposed in the middle of the mounting housing (100), the upper side of the protrusion (301) being a slope.
3. A grain processing screening device as described in claim 2, characterized in that: The protrusion (301) has a vent (302) in the middle.
4. A grain processing screening device as described in claim 3, characterized in that: The upper side of the protrusion (301) is an inner arc surface, and the side of the inner arc surface near the outlet (302) is lower than the side away from the outlet (302).
5. A grain processing screening device as described in claim 4, characterized in that: The upper side of the protrusion (301) is provided with a plurality of arrayed dispersed blocks (303).
6. A grain processing screening device as described in claim 1, characterized in that: The screening assembly (200) also includes a support plate (203) disposed on one side of the mounting housing (100). Both the bottom of the support plate (203) and the bottom of the screening plate (201) are provided with sprockets (204), and the two sprockets (204) are driven by a chain (205).
7. A grain processing screening device as described in claim 6, characterized in that: The bottom of the screening plate (201) is provided with a collection cylinder (101), and an avoidance opening is provided on one side of the collection cylinder (101).