A flour sieving device
By designing a multi-stage screening device and connecting pipelines, the problem of flour waste in existing flour screening devices has been solved, achieving efficient flour screening and purity improvement, and reducing production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI HONGXIN FOODS CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-17
AI Technical Summary
In existing flour sieving devices, some flour falls directly from the discharge port without being effectively filtered by the screen, resulting in flour waste and affecting the purity of the sieving.
A flour sieving device was designed, comprising a base, a bottom frame, a first sieve frame, and a second sieve frame. Driven by a vibration motor, it performs multi-stage sieving using multiple layers of sieves and connecting pipes. The device includes a sieving component and an alignment component to ensure that unqualified flour is sieved again during the multi-stage sieving process, while qualified flour enters the next stage of processing through the connecting pipes.
It improves flour utilization, reduces flour waste, increases screening purity and production efficiency, and lowers production costs.
Smart Images
Figure CN224507631U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of flour sieving technology, and in particular to a flour sieving device. Background Technology
[0002] In flour processing, to obtain flour products of different particle sizes, flour sieving devices are typically used to grade and screen the milled flour. Existing flour sieving devices usually consist of multiple stacked sieve frames, which are fixed together by clips or other connectors to form a multi-layer sieving structure, thereby achieving the grading and screening of flour of different particle sizes.
[0003] Existing flour sieving devices typically consist of multiple stacked sieve frames, fixed together by clips or other connectors to form a multi-layer sieving structure for classifying flour of different particle sizes. However, the discharge port is generally located on the side of the sieve frame. When flour is poured in from the inlet at the top of the device, some flour falls directly out of the side outlet without being effectively filtered by the sieve due to its high falling speed and angle deviation, resulting in flour waste and affecting the purity of the sieved flour. Therefore, a new flour sieving device has been proposed to solve these problems. Utility Model Content
[0004] (a) Purpose of the utility model
[0005] To address the technical problems existing in the background art, the purpose of this utility model is to provide a flour sieving device to solve the problem mentioned in the background art that some flour falls from the discharge port without being effectively filtered by the screen, resulting in flour waste and affecting the sieving purity.
[0006] (II) Technical Solution
[0007] This utility model provides a flour sieving device, including a base, a bottom frame, a first sieve frame, and a second sieve frame. The top edge of the base is connected to the bottom frame by multiple springs. A vibration motor is installed in the middle of the bottom of the bottom frame. The top of the bottom frame is connected to the first sieve frame via the second sieve frame, and the connection between them is detachable. A second discharge shell is installed at the side discharge port of both the first and second sieve frames. A second discharge pipe is installed at the discharge port of the second discharge shell. A second screen is installed on the inner bottom wall of both the first and second sieve frames. The side discharge port of the bottom frame is connected to the first discharge pipe via the first discharge shell. The inner bottom wall of the second discharge shell is a sieving component. The bottom of the second discharge shell, located below the sieving component, is connected to the first connecting pipe via a connecting hopper. A second connecting pipe is installed on the side of both the second sieve frame and the bottom frame. The top of the second connecting pipe is connected to the bottom of the first connecting pipe that is adapted to it via an alignment component.
[0008] Preferably, the screening component includes a first screen, which is installed on the inner bottom wall of the first discharge housing and is adapted to the connecting hopper of the second discharge housing.
[0009] Preferably, the inner walls of the connecting bucket, the second connecting pipe, and the first connecting pipe are smooth, the inner diameter of the first connecting pipe is the same as the inner diameter of the second connecting pipe, and the first connecting pipe is inclined.
[0010] Preferably, the alignment component includes a first mounting ring, an alignment ring, an alignment groove, and a second mounting ring. The first mounting ring is mounted on the outer wall of the outlet of the first connecting pipe, the second mounting ring is mounted on the outer wall of the inlet of the second connecting pipe, the alignment groove is formed at the upper end of the second mounting ring, and the bottom of the first mounting ring is inserted into the alignment groove that is compatible with it through the alignment ring.
[0011] Preferably, the first screen frame has the same mesh size as the first screen mesh installed on the second discharge housing on the side of the first screen frame, the second screen frame has the same mesh size as the first screen mesh installed on the side of the second discharge housing, and the mesh size of the second screen mesh located inside the first screen frame is larger than the mesh size of the second screen mesh located inside the second screen frame.
[0012] Preferably, the vibration motor is a three-phase asynchronous motor, and the spring is a cylindrical helical compression spring.
[0013] Preferably, the first screen frame above is detachably connected to a top cover, and a feed pipe is connected to the top of the top cover.
[0014] Preferably, the top cover, the first sieve frame, the second sieve frame, and the bottom frame are connected by mechanical snap-fit.
[0015] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:
[0016] This flour sieving device, by setting a sieving component inside the second discharge shell, further sieving flour that has not been effectively filtered by the second screen in the first and second screen frames. This allows for further sieving of flour that meets the requirements, preventing the direct discharge of flour that meets the requirements, reducing flour waste, improving flour utilization, and lowering production costs. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of a flour sieving device proposed in this utility model.
[0018] Figure 2 This is a perspective view of the first discharge shell in a flour sieving device proposed in this utility model.
[0019] Figure 3 This is a perspective view of the bottom frame of a flour sieving device proposed in this utility model.
[0020] Figure 4 This is a perspective view of the sieve frame in a flour sieving device proposed in this utility model.
[0021] Figure 5 This is an assembly diagram of the alignment component in a flour sieving device proposed in this utility model.
[0022] Reference numerals in the attached drawings: 1. First screen frame; 2. First discharge shell; 3. First discharge pipe; 4. Bottom frame; 5. Spring; 6. Second discharge pipe; 7. Vibrating motor; 8. Connecting hopper; 9. Base; 10. First connecting pipe; 11. Second connecting pipe; 12. Feed pipe; 13. Top cover; 14. First screen; 15. Second screen; 16. Second discharge shell; 17. First mounting ring; 18. Alignment ring; 19. Alignment groove; 20. Second mounting ring; 21. Second screen frame. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.
[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, such as welding, riveting, or bonding; it can also be a detachable connection, such as threaded connection, keyed connection, or pin connection; or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can be a connection within 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.
[0026] Example 1
[0027] As shown in Figures 1-5, this embodiment provides a flour sieving device, including a base 9, a bottom frame 4, a first sieve frame 1, and a second sieve frame 21. The top edge of the base 9 is connected to the bottom frame 4 via multiple springs 5. A vibration motor 7, which is a three-phase asynchronous motor, is installed in the middle of the bottom of the bottom frame 4. The springs 5 are cylindrical helical compression springs. The top of the bottom frame 4 is detachably connected to the first sieve frame 1 via the second sieve frame 21. A top cover 13 is detachably connected to the top of the first sieve frame 1. The top of the top cover 13 is connected to the feed pipe 12, and the top cover 13, the first sieve frame 1, the second sieve frame 21, and the bottom frame 4 are connected by mechanical snap-fit connections.
[0028] In this embodiment, by setting the first screen 14, when some flour that has not been effectively filtered by the second screen 15 in the first screen frame 1 enters the second discharge shell 16, it can be screened again to further intercept flour that does not meet the requirements, thereby preventing this part of the flour from being discharged directly from the second discharge pipe 6, thus improving the purity of the flour after screening and reducing flour waste.
[0029] After being sieved through the first screen 14, the qualified flour can pass through the connecting hopper 8, the first connecting pipe 10, and the second connecting pipe 11 in sequence to enter the next stage of sieving, ensuring the continuity and efficiency of the flour sieving process.
[0030] Example 2
[0031] As shown in Figure 1, this embodiment optimizes the connection parts based on Embodiment 1. The inner walls of the connecting hopper 8, the second connecting pipe 11, and the first connecting pipe 10 are smooth. The inner diameter of the first connecting pipe 10 is the same as that of the second connecting pipe 11 and is inclined. The first screen frame 1 has the same mesh size as the first screen 14 on its side second discharge shell 16, and the second screen frame 21 has the same mesh size as the first screen 14 on its side second discharge shell 16. The mesh size of the second screen 15 inside the first screen frame 1 is larger than that inside the second screen frame 21.
[0032] In this embodiment, the smooth inner walls of the connecting hopper 8, the second connecting pipe 11, and the first connecting pipe 10 can reduce flour residue during the flow process and ensure that the flour can flow smoothly. The first connecting pipe 10 and the second connecting pipe 11 have the same inner diameter and the first connecting pipe 10 is inclined, which helps the flour to flow more smoothly from the first connecting pipe 10 and the second connecting pipe 11, thereby improving the flour conveying efficiency.
[0033] Example 3
[0034] As shown in Figure 5, this embodiment focuses on describing the alignment components. The alignment components include a first mounting ring 17, an alignment ring 18, an alignment groove 19, and a second mounting ring 20. The first mounting ring 17 is installed on the outer wall of the outlet of the first connecting pipe 10, and the second mounting ring 20 is installed on the outer wall of the inlet of the second connecting pipe 11. The alignment groove 19 is opened at the upper end of the second mounting ring 20, and the bottom of the first mounting ring 17 is inserted into the alignment groove 19 that matches it through the alignment ring 18.
[0035] In this embodiment, during the installation process, by inserting the alignment ring 18 into the alignment groove 19, the first connecting pipe 10 and the second connecting pipe 11 can be quickly and accurately aligned and connected, which facilitates installation.
[0036] Example 4
[0037] As shown in Figure 4, this embodiment defines the mesh size of the screen. The first screen frame 1 has the same mesh size as the first screen 14 installed on the second discharge housing 16 on the side of the first screen frame 1, and the second screen frame 21 has the same mesh size as the first screen 14 installed on the second discharge housing 16 on the side of the second screen frame 21. The mesh size of the second screen 15 located inside the first screen frame 1 is larger than the mesh size of the second screen 15 inside the second screen frame 21.
[0038] In this embodiment, the first sieve frame 1 and its corresponding first sieve 14 are able to screen out flour of the same particle size range, and the second sieve frame 21 and its corresponding first sieve 14 are also able to screen out flour of the same particle size range. Moreover, the particle size of the flour selected by the first sieve frame 1 is larger than that of the flour selected by the second sieve frame 21, thus realizing the graded screening of flour.
[0039] Example 5
[0040] As shown in Figure 1, the vibration motor 7 is a three-phase asynchronous motor, and the spring 5 is a cylindrical helical compression spring.
[0041] In this embodiment, the cylindrical helical compression spring has good elasticity and buffering performance. During the vibration of the device, it can play a supporting and buffering role, reduce the impact of vibration on the base, and ensure the stable operation of the device.
[0042] Example 6
[0043] As shown in Figure 1, this embodiment adds a top cover and a feed pipe. The top cover 13 is detachably connected to the upper first sieve frame 1, and the top of the top cover 13 is connected to the feed pipe 12. The top cover prevents flour from overflowing from the top of the first sieve frame during the sieving process, reducing flour waste. The feed pipe facilitates pouring the flour to be sieved into the device, and the detachable top cover facilitates cleaning and maintenance of the inside of the first sieve frame.
[0044] In this embodiment, the top cover 13 prevents flour from overflowing from the top of the first sieve frame 1 during the sieving process, reducing flour waste; the feed pipe 12 facilitates pouring the flour to be sieved into the first sieve frame 1, and the detachable top cover 13 facilitates cleaning and maintenance of the inside of the first sieve frame 1.
[0045] Example 7
[0046] As shown in Figure 1, this embodiment describes the connection method between the various components. The top cover 13, the first screen frame 1, the second screen frame 21, and the bottom frame 4 are connected by mechanical snap-fits.
[0047] In this embodiment, the mechanical snap-fit connection method facilitates the disassembly and cleaning of the top cover 13, the first screen frame 1, the second screen frame 21, and the bottom frame 4.
[0048] Working principle
[0049] When using this utility model, the flour to be sieved is poured into the feed pipe 12, and the vibration motor 7 is started. The vibration generated by the vibration motor 7 is transmitted to each screen through the bottom frame 4, the second screen frame 21 and the first screen frame 1.
[0050] The flour is initially sieved on the second screen 15 inside the first sieve frame 1. Flour that meets the sieve mesh size falls into the second sieve frame 21. Some flour that has not been effectively filtered by the second screen 15 inside the first sieve frame 1 enters the second discharge shell 16 connected to it and is sieved again by the corresponding first screen 14. The unqualified flour is discharged from the corresponding first discharge pipe 3. The qualified flour enters the next stage of sieving process through the corresponding connecting hopper 8, the first connecting pipe 10 and the second connecting pipe 11.
[0051] Inside the second sieve frame 21, the flour is processed by the corresponding second sieve 15 and first sieve 14. Flour that meets the mesh size of the sieve falls into the bottom frame 4. Some flour that has not been effectively filtered by the second sieve 15 and first sieve 14 enters the second discharge shell 16 connected to it. It is screened again by the corresponding first sieve 14. The unqualified flour is discharged from the corresponding first discharge pipe 3. The qualified flour enters the bottom frame 4 through the corresponding connecting hopper 8, first connecting pipe 10 and second connecting pipe 11.
[0052] Finally, the flour that enters the bottom frame 4 will be discharged through the first discharge shell 2 and the first discharge pipe 3 during the vibration process.
[0053] The alignment component ensures accurate connection between the first connecting tube 10 and the second connecting tube 11.
[0054] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A flour sieving device, comprising a base (9), a bottom frame (4), a first sieve frame (1), and a second sieve frame (21), wherein the top edge of the base (9) is connected to the bottom frame (4) by a plurality of springs (5), a vibration motor (7) is installed in the middle of the bottom of the bottom of the bottom frame (4), the top of the bottom frame (4) is connected to the first sieve frame (1) through the second sieve frame (21), and the connection between them is detachable, a second discharge shell (16) is installed at the side discharge port of both the first sieve frame (1) and the second sieve frame (21), a second discharge pipe (6) is installed at the discharge port of the second discharge shell (16), a second screen (15) is installed on the inner bottom wall of the first sieve frame (1) and the second sieve frame (21), and the side discharge port of the bottom frame (4) is connected to the first discharge pipe (3) through the first discharge shell (2), characterized in that, The inner bottom wall of the second discharge shell (16) is a screening component. The bottom of the second discharge shell (16) and below the screening component is connected to the first connecting pipe (10) through the connecting hopper (8). The second screen frame (21) and the side of the bottom frame (4) are both equipped with second connecting pipes (11). The top of the second connecting pipe (11) is connected to the bottom of the first connecting pipe (10) that is adapted to it through the alignment component.
2. A flour sieving apparatus as claimed in claim 1, wherein, The screening component includes a first screen (14), which is installed on the inner bottom wall of the first discharge shell (2) and is adapted to the connecting hopper (8) of the second discharge shell (16).
3. A flour sieving apparatus as claimed in claim 1, wherein, The inner walls of the connecting bucket (8), the second connecting pipe (11) and the first connecting pipe (10) are smooth. The inner diameter of the first connecting pipe (10) is the same as the inner diameter of the second connecting pipe (11), and the first connecting pipe (10) is inclined.
4. A flour sieving apparatus as claimed in claim 1, wherein, The alignment assembly includes a first mounting ring (17), an alignment ring (18), an alignment groove (19), and a second mounting ring (20). The first mounting ring (17) is mounted on the outer wall of the outlet of the first connecting pipe (10), and the second mounting ring (20) is mounted on the outer wall of the inlet of the second connecting pipe (11). The alignment groove (19) is opened at the upper end of the second mounting ring (20), and the bottom of the first mounting ring (17) is inserted into the alignment groove (19) that is compatible with it through the alignment ring (18).
5. A flour sieving apparatus as claimed in claim 2, wherein, The first screen frame (1) has the same mesh size as the first screen (14) installed on the second discharge shell (16) on the side of the first screen frame (1). The second screen frame (21) has the same mesh size as the first screen (14) installed on the second discharge shell (16) on the side of the second screen frame (21). The mesh size of the second screen (15) located inside the first screen frame (1) is larger than the mesh size of the second screen (15) inside the second screen frame (21).
6. A flour sieving apparatus as claimed in claim 1, wherein, The vibration motor (7) is a three-phase asynchronous motor, and the spring (5) is a cylindrical helical compression spring.
7. A flour sieving apparatus as claimed in claim 1, wherein, The first screen frame (1) above is detachably connected to a top cover (13), and the top of the top cover (13) is connected to a feed pipe (12).
8. A flour sieving apparatus as claimed in claim 7, wherein, The top cover (13), the first sieve frame (1), the second sieve frame (21) and the bottom frame (4) are connected by mechanical snap fasteners.