Efficient and energy-saving flour processing equipment with complex-frequency vibration screening function

Abstract

The invention relates to the technical field of flour processing equipment, in particular to efficient and energy-saving flour processing equipment for multi-frequency vibration screening, which comprises an outer box body, a feeding hopper is fixedly mounted at the top of the outer box body, an inner screening box is arranged in the outer box body, and side edge plate bodies and a bottom plate body of the inner screening box are fixed with the outer box body through a plurality of springs; a discharging hopper penetrating out of the outer box body is fixedly installed at the bottom of the inner screening box, a main vibration motor is fixedly installed at the bottom of the discharging hopper, a plurality of mesh screens are fixedly installed on the inner wall of the inner screening box from top to bottom, the hole diameters of the mesh screens are sequentially reduced from top to bottom, and a discharging hopper is fixedly installed at the discharging end of each mesh screen. A discharging hopper is fixedly installed on the inner screening box and penetrates out of the outer box body, and an auxiliary high-frequency vibrator is fixedly installed on the bottom face of an end plate body, penetrating out of the outer box body, of the discharging hopper. The screening device has a good screening effect, and the screening efficiency can be improved.

Description

Technical Field

[0001] This invention relates to the field of flour processing equipment technology, and more specifically, to a high-efficiency and energy-saving flour processing equipment using a multi-frequency vibrating screen. Background Technology

[0002] In the flour processing process, sieving is one of the key steps. Its purpose is to classify the ground flour according to particle size, remove impurities and coarse powder, and ensure the fineness and uniformity of the finished flour. At present, most of the mainstream flour sieving equipment on the market adopts a single-frequency vibrating sieving structure, which uses a motor to drive an eccentric wheel to generate a single frequency vibration, thereby driving the screen to separate flour particles.

[0003] However, such traditional equipment has many limitations in practical applications. First, its screening efficiency is low. In single-frequency vibration mode, flour particles are prone to "agglomeration" or "bridging" on the screen surface. The adhesion between particles is enhanced, making it difficult for fine powder to pass through the screen holes quickly, and coarse powder is prone to accumulate on the screen surface, requiring frequent shutdowns for cleaning, which seriously affects the continuity of processing.

[0004] In addition, traditional equipment consumes a lot of energy. To break up particle agglomeration, it is necessary to increase the vibration amplitude or extend the vibration time, which increases motor power loss. In view of this, we propose a high-efficiency and energy-saving flour processing equipment based on multi-frequency vibrating screening. Summary of the Invention

[0005] The purpose of this invention is to provide a high-efficiency and energy-saving flour processing equipment using a multi-frequency vibrating screen, in order to solve the defects mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A high-efficiency and energy-saving flour processing equipment with a multi-frequency vibrating screen includes an outer casing. A feed hopper is fixedly installed on the top of the outer casing. An inner screening box is set inside the outer casing. The side plates and bottom plates of the inner screening box are fixed to the outer casing by multiple springs. A discharge hopper that extends out of the outer casing is fixedly installed at the bottom of the inner screening box. A main vibrating motor is fixedly installed at the bottom of the discharge hopper. Multiple mesh screens are fixedly installed on the inner wall of the inner screening box from top to bottom, with the aperture of the mesh screens decreasing sequentially from top to bottom. A discharge hopper is fixedly installed at the discharge end of the mesh screen. The discharge hopper is fixedly installed on the inner screening box and extends out of the outer casing. An auxiliary high-frequency vibrator is fixedly installed on the bottom surface of the end plate of the discharge hopper extending out of the outer casing.

[0007] Preferably, the side plate of the outer casing is provided with a plurality of through holes, and the discharge hopper extends out from the through holes; Preferably, the bottom plate of the outer casing is provided with a bottom hole, and the unloading hopper extends out from the bottom hole. The above two settings enable the internal screening box to be arranged and operated normally.

[0008] Preferably, the size of the through hole is larger than the size of the discharge hopper, and the size of the bottom hole is larger than the size of the unloading hopper; This feature prevents collisions between the inner screening box and the outer casing.

[0009] Preferably, a plurality of support legs are fixedly installed at the bottom of the outer casing, and a fixed base is fixedly installed at the bottom end of the support legs; This feature allows the support legs to provide stable support.

[0010] Preferably, the bottom of the fixed base is provided with a rubber shock-absorbing pad, and the thickness of the rubber shock-absorbing pad is between 3cm and 5cm; This feature utilizes rubber damping pads to absorb vibration energy during equipment operation, thereby reducing noise.

[0011] Preferably, a feed pipe is fixedly installed at the bottom of the feed hopper, and the feed pipe is inserted into the inner screening box from above; This setting facilitates normal feeding operations.

[0012] Preferably, the inner walls of the feed hopper and the feed pipe are provided with an anti-stick layer, the outer casing is provided with a vibration frequency control host, and the bottom of the vibration frequency control host is fixedly installed with a support frame. This non-stick layer provides an anti-stick effect.

[0013] Preferably, the front panel of the outer casing is provided with an exposure hole, and a front door for sealing the exposure hole is hinged to the front side of the outer casing. This setting facilitates maintenance and other operations.

[0014] Preferably, a transparent panel is fixedly installed on the front side door, a handle is fixedly installed on the front side of the front side door, and a vertical pipe is fixedly installed at the bottom of the unloading hopper; The transparent panel in this setting facilitates observation and operation.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention sets up a main vibration motor at the bottom of the inner screening box and an auxiliary high-frequency vibrator at the end of the discharge hopper to form a complex frequency vibration mode, thereby realizing multi-frequency vibration drive of the screen. This effectively breaks the "agglomeration" and "bridging" phenomenon of flour particles on the screen surface, speeds up the passage of fine powder through the screen holes, reduces the accumulation of coarse powder on the screen surface, and eliminates the need for frequent machine stops for cleaning, thus improving screening efficiency and ensuring processing continuity.

[0016] 2. This invention replaces the traditional single-frequency vibration design with a complex-frequency vibration structure. While ensuring the screening effect, it eliminates the need to break up particle agglomeration by increasing the vibration amplitude or extending the vibration time. The spring enhances the vibration effect and reduces motor power loss. At the same time, the support legs at the bottom of the outer casing cooperate with the fixed base, and the rubber shock-absorbing pads at the bottom of the fixed base achieve stable support and vibration energy absorption during equipment operation, reducing the impact of vibration transmission on the surrounding environment, and achieving the effects of energy saving, consumption reduction, and reduced operating noise.

[0017] 3. This invention achieves an anti-sticking effect during the flour feeding process by setting a feeding hopper with a feeding pipe on the top of the outer casing and setting an anti-sticking layer on the inner wall of the feeding hopper and the feeding pipe, thus preventing flour from adhering to the inner wall of the feeding component and affecting the feeding efficiency; at the same time, the front box door with a transparent plate is hinged to the front of the outer casing, which not only makes it convenient for the staff to observe the internal screening situation through the transparent plate, but also allows the box door to be opened quickly when maintenance is required, thereby improving the ease of operation of the equipment and reducing the difficulty of maintenance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is one of the structural schematic diagrams of the present invention; Figure 3 This is a second partial structural schematic diagram of the present invention; The meanings of the labels in the diagram are as follows: 1. Outer casing; 10. Through hole; 11. Bottom hole; 12. Support leg; 13. Fixed base; 14. Rubber shock-absorbing pad; 15. Feed hopper; 151. Feed pipe; 16. Anti-stick layer; 2. Inner screening box; 20. Mesh screen; 21. Discharge hopper; 22. Auxiliary high-frequency vibrator; 23. Unloading hopper; 24. Main vibration motor; 25. Vertical tube; 26. Spring; 27. Exposure hole; 28. Front door; 281. Transparent plate; 282. Handle; 3. Vibration frequency control unit; 30. Support frame. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and 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 invention.

[0021] Please see Figures 1-3 This invention provides a technical solution: a high-efficiency and energy-saving flour processing equipment using a multi-frequency vibrating screen, comprising an outer casing 1, a feed hopper 15 fixedly installed on the top of the outer casing 1, an inner screening box 2 disposed inside the outer casing 1, the side plates and bottom plates of the inner screening box 2 being fixed to the outer casing 1 by multiple springs 26, a discharge hopper 23 extending out of the outer casing 1 fixedly installed at the bottom of the inner screening box 2, a main vibrating motor 24 fixedly installed at the bottom of the discharge hopper 23, and multiple perforated screens 20 fixedly installed on the inner wall of the inner screening box 2 from top to bottom. The aperture of the screen 20 decreases sequentially. A discharge hopper 21 is fixedly installed at the discharge end of the screen 20. The discharge hopper 21 is fixedly installed on the inner screening box 2. The discharge hopper 21 extends out of the outer box 1. An auxiliary high-frequency vibrator 22 is fixedly installed on the bottom surface of the end plate of the discharge hopper 21 extending out of the outer box 1. The main vibration motor 24 and the auxiliary high-frequency vibrator 22 cooperate to form a complex frequency vibration, which drives the inner screening box 2 and the screen 20 to vibrate at multiple frequencies, effectively breaking up the agglomeration of flour particles. At the same time, the screens 20 with different apertures realize the grading and screening of flour, improving screening efficiency and grading effect.

[0022] like Figure 1 As shown, the side plate of the outer box 1 is provided with multiple through holes 10. The discharge hopper 21 passes through the through holes 10, so that the discharge hopper 21 on the inner screening box 2 can extend smoothly to the outside of the outer box 1, ensuring that the screened flour can be discharged normally through the discharge hopper 21, and avoiding obstruction of the discharge path from affecting the processing flow.

[0023] like Figure 1As shown, the bottom plate of the outer casing 1 is provided with a bottom hole 11, through which the unloading hopper 23 passes to facilitate the discharge of material from the bottom of the inner screening box 2. At the same time, it provides space for the installation of the main vibration motor 24 at the bottom of the unloading hopper 23, ensuring the normal operation of the main vibration motor 24.

[0024] In this embodiment, the size of the through hole 10 is larger than the size of the discharge hopper 21, and the size of the bottom hole 11 is larger than the size of the unloading hopper 23. This ensures that when the inner screening box 2 vibrates under the drive of the main vibration motor 24 and the auxiliary high-frequency vibrator 22, the discharge hopper 21 and the unloading hopper 23 have sufficient space to move, avoiding collisions with the outer box 1 and ensuring stable operation of the equipment.

[0025] like Figure 1 As shown, multiple support legs 12 are fixedly installed at the bottom of the outer casing 1, and a fixed base 13 is fixedly installed at the bottom of the support legs 12, so that the support legs 12 and the fixed base 13 cooperate to provide stable support for the outer casing 1, avoid displacement due to vibration during equipment operation, and improve the overall stability of the equipment.

[0026] like Figure 1 As shown, a rubber shock-absorbing pad 14 is provided at the bottom of the fixed base 13. The thickness of the rubber shock-absorbing pad 14 is between 3cm and 5cm, which enables the rubber shock-absorbing pad 14 to effectively absorb the vibration energy generated during the operation of the equipment, reduce the vibration transmitted to the ground, reduce the noise of the equipment operation, and improve the working environment.

[0027] like Figure 1 As shown, a feed pipe 151 is fixedly installed at the bottom of the feed hopper 15. The feed pipe 151 is inserted into the inner screening box 2 from the top, so that the flour in the feed hopper 15 can be accurately transported into the inner screening box 2 through the feed pipe 151, avoiding the flour from spilling into the gap between the outer box 1 and the inner screening box 2 during the feeding process, and ensuring smooth feeding.

[0028] In addition, an anti-sticking layer 16 is provided on the inner wall of the feed hopper 15 and the feed pipe 151. A vibration frequency control host 3 is provided on the outside of the outer casing 1. A support frame 30 is fixedly installed at the bottom of the vibration frequency control host 3. The anti-sticking layer 16 prevents flour from adhering to the inner wall of the feed hopper 15 and the feed pipe 151 and causing blockage. The vibration frequency control host 3 can adjust the vibration frequency. The support frame 30 ensures that the vibration frequency control host 3 is placed stably, improving the equipment's operational flexibility and feeding stability.

[0029] like Figure 3As shown, an exposure hole 27 is provided on the front panel of the outer casing 1. A front door 28 for sealing the exposure hole 27 is hinged to the front side of the outer casing 1. The front door 28 is equipped with a door lock, allowing staff to open the front door 28 and use the exposure hole 27 to inspect and clean the inner screening box 2, mesh screen 20 and other components inside the inner and outer casings 1, reducing maintenance difficulty.

[0030] like Figure 3 As shown, a transparent panel 281 is fixedly installed on the front door 28, and a handle 282 is fixedly installed on the front side of the front door 28. A vertical pipe 25 is fixedly installed at the bottom of the unloading hopper 23, allowing the staff to observe the screening situation inside the inner screening box 2 through the transparent panel 281. The handle 282 facilitates opening and closing the front door 28, and the vertical pipe 25 extends the unloading path, making it easier to connect to the subsequent receiving device and improving the ease of operation and equipment compatibility.

[0031] It is worth noting that the outer casing 1 is equipped with corresponding wiring holes to enable normal wiring and connection operations; the rated power of the main vibration motor 24 can be 1.5kW, outputting low-frequency vibration (frequency 15-25Hz) to drive the overall vibration of the inner screening box 2, realizing the macroscopic flow of flour particles; the rated power of the auxiliary high-frequency vibrator 22 can be 0.3kW, outputting high-frequency vibration (frequency 50-80Hz) to break the agglomeration of flour particles on the surface of the mesh screen 20; the vibration frequency control host 3 is electrically connected to the main vibration motor 24 and the auxiliary high-frequency vibrator 22 through wires respectively, and can adjust the frequency ratio of low-frequency and high-frequency vibration according to the particle size requirements to achieve dynamic optimization of screening effect.

[0032] Finally, it should be noted that the main vibration motor 24, auxiliary high-frequency vibrator 22, vibration frequency control host 3, corresponding control system and external power supply involved in this invention are all general standard parts or parts known to those skilled in the art. Their structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods. In the idle space of this device, all the above-mentioned electrical components, which refer to power elements, electrical components and adapted controllers and power supplies, are connected by wires. The specific connection method should refer to the working principle in this invention. The electrical connections between each electrical component are completed in the order of operation. The detailed connection methods are all technologies known in the art.

[0033] When using the high-efficiency and energy-saving flour processing equipment with multi-frequency vibrating sieving of the present invention, open the front box door 28 with door lock, check whether the spring 26 and multiple mesh screens 20 between the inner screening box 2 and the outer box 1 are intact, close the box door, pour the flour to be screened into the feed hopper 15 at the top of the outer box 1, and the flour enters the inner screening box 2 through the feed pipe 151 at the bottom of the feed hopper 15; During operation, the vibration frequency control host 3 is started and the parameters are adjusted so that the main vibration motor 24 at the bottom of the discharge hopper 23 and the auxiliary high-frequency vibrator 22 at the end of the discharge hopper 21 form a complex frequency vibration, which drives the inner screening box 2 and the mesh screen 20 to vibrate. After the flour is graded by the mesh screen 20 with the aperture decreasing from top to bottom, it is discharged through the discharge hopper 21 from the through hole 10 on the side of the outer box 1. The remaining material is discharged through the discharge hopper 23 from the bottom hole 11 at the bottom of the outer box 1 and the vertical pipe 25 at the bottom of the discharge hopper 23. During this period, the screening situation can be observed through the transparent plate 281 on the front box door 28.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency and energy-saving flour processing equipment using a multi-frequency vibrating screen, comprising an outer casing (1), characterized in that: A feed hopper (15) is fixedly installed on the top of the outer casing (1). An inner screening box (2) is provided inside the outer casing (1). The side plates and bottom plates of the inner screening box (2) are fixed to the outer casing (1) by multiple springs (26). A discharge hopper (23) that extends out of the outer casing (1) is fixedly installed at the bottom of the inner screening box (2). A main vibration motor (24) is fixedly installed at the bottom of the discharge hopper (23). Multiple mesh screens (20) are fixedly installed on the inner wall from top to bottom. The aperture of the multiple mesh screens (20) decreases sequentially from top to bottom. A discharge hopper (21) is fixedly installed at the discharge end of the mesh screen (20). The discharge hopper (21) is fixedly installed on the inner screening box (2). The discharge hopper (21) extends out of the outer box (1). An auxiliary high-frequency vibrator (22) is fixedly installed on the bottom surface of the end plate of the discharge hopper (21) extending out of the outer box (1).

2. The high-efficiency and energy-saving flour processing equipment using a complex frequency vibrating screen according to claim 1, characterized in that: The outer casing (1) has multiple through holes (10) on its side plate, and the discharge hopper (21) passes through the through holes (10).

3. The high-efficiency and energy-saving flour processing equipment using a complex frequency vibrating screen according to claim 2, characterized in that: The bottom plate of the outer casing (1) is provided with a bottom hole (11), and the unloading hopper (23) passes through the bottom hole (11).

4. The high-efficiency and energy-saving flour processing equipment using a complex frequency vibrating screen according to claim 3, characterized in that: The size of the through hole (10) is larger than the size of the discharge hopper (21), and the size of the bottom hole (11) is larger than the size of the unloading hopper (23).

5. The high-efficiency and energy-saving flour processing equipment using a complex frequency vibrating screen according to claim 1, characterized in that: The bottom of the outer casing (1) is fixedly equipped with multiple support legs (12), and the bottom end of the support legs (12) is fixedly equipped with a fixed base (13).

6. The high-efficiency and energy-saving flour processing equipment using a complex frequency vibrating screen according to claim 5, characterized in that: The bottom of the fixed base (13) is provided with a rubber shock-absorbing pad (14), and the thickness of the rubber shock-absorbing pad (14) is between 3cm and 5cm.

7. The high-efficiency and energy-saving flour processing equipment using a multi-frequency vibrating screen according to claim 1, characterized in that: The bottom end of the feed hopper (15) is fixedly installed with a feed pipe (151), which is inserted into the inner screening box (2) from above.

8. The high-efficiency and energy-saving flour processing equipment for multiple-frequency vibrating screening according to claim 7, characterized in that: The inner walls of the feed hopper (15) and the feed pipe (151) are provided with an anti-stick layer (16). The outer casing (1) is provided with a vibration frequency control host (3). The bottom of the vibration frequency control host (3) is fixedly installed with a support frame (30).

9. The high-efficiency and energy-saving flour processing equipment for multiple-frequency vibrating sieving according to claim 1, characterized in that: An exposure hole (27) is provided on the front side plate of the outer casing (1), and a front door (28) for sealing the exposure hole (27) is hinged to the front side of the outer casing (1).

10. The high-efficiency and energy-saving flour processing equipment for multiple-frequency vibrating sieving according to claim 9, characterized in that: A transparent plate (281) is fixedly installed on the front side door (28), a handle (282) is fixedly installed on the front side of the front side door (28), and a vertical pipe (25) is fixedly installed at the bottom of the unloading hopper (23).

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