A grading and screening device for flour processing

Abstract

The application relates to the technical field of flour screening processing, and discloses a grading and screening device for flour processing, which comprises a discharge bin, a first screening bin is fixedly installed at the top of the discharge bin, a second screening bin is fixedly installed at the top of the first screening bin, a screening and discharging mechanism is arranged on the discharge bin, the first screening bin and the second screening bin, a vibrating mechanism is arranged at the bottom of the discharge bin, and a feeding mechanism is arranged at the top of the second screening bin. The grading and screening device for flour processing is provided with the screening and discharging mechanism, in the use process, two screen meshes are arranged to classify and screen the flour, the arc-shaped gate is kept closed in the screening process, so that the flour cannot be discharged in the screening process, after the screening is completed, the arc-shaped gate is opened by driving the first motor, the flour is discharged from different discharge ports under the action of vibration, and the complete screening of the flour is realized.

Description

Technical Field

[0001] This invention relates to the field of flour screening and processing technology, specifically to a grading and screening device for flour processing. Background Technology

[0002] Flour is a powdery material obtained by grinding wheat. In the grain and oil processing industry, after the wheat milling process is completed, the milled material needs to be graded and screened to classify and collect the material according to particle size, so as to obtain flour products of different specifications to meet the production and use needs of different foods such as bread, pastries, and noodles.

[0003] In existing flour processing production lines, grading and screening are crucial steps in the flour milling process. The industry commonly uses vibrating screens for flour grading, often employing multi-layer vibrating grading screens. These screens consist of multiple layers of screens of different sizes, arranged with decreasing aperture sizes from top to bottom. A vibrating mechanism drives the screen body to reciprocate, allowing the material to spread sufficiently across the screen surface. Flour particles of different sizes pass through their corresponding apertures for grading, while coarse particles are conveyed and discharged along the screen surface. However, in actual use, during the grading process, after grading, the upper-level screen particles fall onto the secondary screen. However, these particles are randomly distributed on the secondary screen, resulting in some incompletely sized particles being discharged under vibration, leading to incomplete grading. Therefore, a grading and screening device for flour processing is needed to solve these problems. Summary of the Invention

[0004] The purpose of this invention is to provide a grading and screening device for flour processing to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a grading and screening device for flour processing, comprising a discharge bin, a first screening bin fixedly installed on the top of the discharge bin, a second screening bin fixedly installed on the top of the first screening bin, a screening and discharge mechanism provided on the discharge bin, the first screening bin and the second screening bin, a vibration mechanism provided at the bottom of the discharge bin, and a feeding mechanism provided at the top of the second screening bin. The screening and discharging mechanism includes a discharging component and a screening component. The discharging component is disposed outside the discharging bin, the first screening bin, and the second screening bin and extends into them. The screening component is disposed inside the discharging bin, the first screening bin, and the second screening bin. The discharge assembly includes a discharge port, which is located outside the discharge bin, the first screening bin, and the second screening bin. Each of the discharge bin, the first screening bin, and the second screening bin has an installation chamber fixedly installed on its exterior. A first motor is fixedly installed inside the installation chamber, and a gear is fixedly installed at the output end of the first motor. An arc-shaped gate is slidably installed on the inner wall of the discharge bin, the first screening bin, and the second screening bin, and a toothed plate is fixedly installed on the outer side of the arc-shaped gate. Guide rails are fixedly installed on the outer wall of the discharge bin, the first screening bin, and the second screening bin, and clamping rails are fixedly installed on the inner wall of the discharge bin, the first screening bin, and the second screening bin.

[0006] Preferably, the discharge bin, the first screening bin, and the second screening bin are provided with through slots at the corresponding positions of the arc-shaped gate, and the arc-shaped gate is fixedly installed through the through slots with the toothed plate, and one end of the arc-shaped gate is inserted into the inside of the guide rail.

[0007] Preferably, the toothed plate is slidably mounted on the outside of the guide rail, and the gear meshes with the toothed plate.

[0008] Preferably, the discharge components on the discharge bin, the first screening bin, and the second screening bin are staggered.

[0009] Preferably, the screening component includes a collection hopper, which is fixedly installed on the top of the discharge bin, the first screening bin, and the second screening bin. A discharge pipe is fixedly installed at the bottom of the collection hopper. A first screen is fixedly installed inside the first screening bin near the bottom, and a second screen is fixedly installed inside the second screening bin near the bottom.

[0010] Preferably, the mesh diameter of the first screen is smaller than that of the second screen, and the upper surfaces of the first screen and the second screen are upwardly convex arc-shaped structures.

[0011] Preferably, the vibration mechanism includes a mounting plate, which is fixedly installed at the bottom of the discharge hopper. A spring is fixedly installed at the bottom of the mounting plate, and a base is fixedly installed at the end of the spring away from the mounting plate. A vibrator is fixedly installed at the bottom of the mounting plate.

[0012] Preferably, there are multiple springs arranged in a circumferential array.

[0013] Preferably, the feeding mechanism includes a sealing cover, which is fixedly installed on the top of the second screening chamber. A flexible tube is provided on the top of the sealing cover. A discharge pipe is fixedly installed at the end of the flexible tube away from the sealing cover. A feeding pipe is fixedly installed on the top of the discharge pipe. A feed hopper is fixedly installed on the right end of the feeding pipe. A second motor is fixedly installed on the left end of the feeding pipe. A feeding auger is fixedly installed at the output end of the second motor.

[0014] Preferably, a through groove is provided at the corresponding position of the feed hopper and the feeding pipe, and the right end of the feeding pipe is located inside the through groove, and the feeding auger is rotatably installed inside the feeding pipe.

[0015] Compared with the prior art, the present invention provides a grading and screening device for flour processing, which has the following beneficial effects: This flour processing grading and screening device uses a screening and discharge mechanism to grade and screen flour through two screens. During the screening process, the internal arc-shaped gate remains closed, preventing flour from being discharged. After screening, the arc-shaped gate is opened by a first motor, and the flour is discharged from different outlets under vibration, thus achieving thorough screening of the flour.

[0016] This flour processing grading and screening device uses a vibration mechanism. During operation, multiple springs arranged in a circular array provide elastic support for the discharge bin, the first screening bin, and the second screening bin. At the same time, the vibrator causes them to vibrate, so that the first and second screens inside the device grade and screen the flour.

[0017] This flour processing grading and screening device, through its feeding mechanism, involves adding flour into the feed hopper during operation. Simultaneously, a second motor drives the feeding auger to rotate, intermittently feeding the flour into the sealed enclosure. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort: Figure 1 This is a schematic diagram of the external structure of the present invention; Figure 2 This is a schematic cross-sectional view of the present invention; Figure 3 This is a top sectional view of the discharge bin and connected mechanism of the present invention. Figure 4 This is a schematic diagram of the external structure of the arc-shaped gate and its connected mechanism of the present invention; Figure 5 This is a front cross-sectional view of the discharge bin and connected mechanism of the present invention. Figure 6 This is a cross-sectional view of the base and connected mechanism of the present invention; Figure 7 This is a cross-sectional view of the feeding mechanism of the present invention.

[0019] In the diagram: 1. Discharge bin; 2. First screening bin; 3. Second screening bin; 4. Screening and discharging mechanism; 41. Discharge assembly; 411. Discharge port; 412. Mounting bin; 413. First motor; 414. Gear; 415. Arc-shaped gate; 416. Guide rail; 417. Toothed plate; 418. Track clamp; 42. Screening assembly; 421. Collection hopper; 422. Discharge pipe; 423. First screen; 424. Second screen; 5. Vibration mechanism; 51. Mounting plate; 52. Spring; 53. Base; 54. Vibrator; 6. Feeding mechanism; 61. Sealing cover; 62. Flexible tube; 63. Discharge pipe; 64. Feeding pipe; 65. Feed hopper; 66. Second motor; 67. Feeding auger. Detailed Implementation

[0020] 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 skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0022] Example 1:

[0023] Please see Figures 1-5 The present invention provides a technical solution: a grading and screening device for flour processing, including a discharge bin 1, a first screening bin 2 fixedly installed on the top of the discharge bin 1, a second screening bin 3 fixedly installed on the top of the first screening bin 2, a screening and discharge mechanism 4 provided on the discharge bin 1, the first screening bin 2 and the second screening bin 3, a vibration mechanism 5 provided at the bottom of the discharge bin 1, and a feeding mechanism 6 provided at the top of the second screening bin 3. The screening and discharging mechanism 4 includes a discharging component 41 and a screening component 42. The discharging component 41 is located outside the discharging bin 1, the first screening bin 2 and the second screening bin 3 and extends into the inside. The screening component 42 is located inside the discharging bin 1, the first screening bin 2 and the second screening bin 3. The discharge assembly 41 includes a discharge port 411, which is located outside the discharge bin 1, the first screening bin 2, and the second screening bin 3. An installation bin 412 is fixedly installed on the outside of each of the discharge bins 1, 2, and 3. A first motor 413 is fixedly installed inside the installation bin 412, and a gear 414 is fixedly installed at the output end of the first motor 413. An arc-shaped gate 415 is slidably installed on the inner wall of each of the discharge bins 1, 2, and 3, and a toothed plate 417 is fixedly installed on the outer side of the arc-shaped gate 415. A guide rail 416 is fixedly installed on the outer wall of each of the discharge bins 1, 2, and 3, and a retaining rail 418 is fixedly installed on the inner wall of each of the discharge bins 1, 2, and 3, facilitating sealed screening of each bin and allowing for simultaneous opening and discharge after screening, thus enabling more thorough flour sieving.

[0024] Furthermore, through slots are provided at the corresponding positions of the discharge bin 1, the first screening bin 2, and the second screening bin 3 and the arc-shaped gate 415. The arc-shaped gate 415 passes through the through slots and is fixedly installed with the toothed plate 417. One end of the arc-shaped gate 415 is inserted into the inside of the rail 418 to facilitate the sealing of the arc-shaped gate 415.

[0025] Furthermore, the toothed plate 417 is slidably mounted on the outside of the guide rail 416, and the gear 414 meshes with the toothed plate 417, so that the gear 414 can drive the arc-shaped gate 415 to slide open and close through the toothed plate 417.

[0026] Furthermore, the discharge components 41 on the discharge bin 1, the first screening bin 2, and the second screening bin 3 are staggered to facilitate staggered discharge from the discharge bin 1, the first screening bin 2, and the second screening bin 3.

[0027] Furthermore, the screening component 42 includes a collection hopper 421, which is fixedly installed on the top of the discharge bin 1, the first screening bin 2, and the second screening bin 3. A discharge pipe 422 is fixedly installed at the bottom of the collection hopper 421. A first screen 423 is fixedly installed inside the first screening bin 2 near the bottom, and a second screen 424 is fixedly installed inside the second screening bin 3 near the bottom, which facilitates the grading and screening of flour.

[0028] Furthermore, the mesh diameter of the first screen 423 is smaller than that of the second screen 424, and the upper surfaces of the first screen 423 and the second screen 424 are upwardly convex arc-shaped structures, which facilitates the diffusion and screening of flour to the surrounding areas after it is fed into the center.

[0029] In this embodiment, a two-layer screen is used, and the screen surface has an upward-convex arc structure, which allows the material to spread evenly to the surrounding area after entering from the center, thereby improving the screening efficiency. The discharge component 41 is equipped with an arc-shaped gate 415 on the side wall of each layer of the silo, which is driven by the first motor 413 through the gear 414. It remains closed during the screening process to ensure that the flour has enough time to complete the grading and screening on the screen, avoiding the problem of unscreened discharge. After screening, the motor drives the gate to open, and the material of each layer is discharged through the staggered discharge port 411 under the action of vibration, realizing thorough grading and solving the problem of incomplete screening between material layers.

[0030] Example 2:

[0031] Please see Figure 6 Furthermore, in conjunction with Embodiment 1, the vibration mechanism 5 includes a mounting plate 51, which is fixedly installed at the bottom of the discharge bin 1. A spring 52 is fixedly installed at the bottom of the mounting plate 51, and a base 53 is fixedly installed at the end of the spring 52 away from the mounting plate 51. A vibrator 54 is fixedly installed at the bottom of the mounting plate 51 to facilitate vibration of the device, thereby enabling the discharge bin 1, the first screening bin 2, and the second screening bin 3 to perform vibration screening and discharge.

[0032] Furthermore, multiple springs 52 are provided, and the multiple springs 52 are arranged in a circular array to facilitate elastic support for the discharge bin 1, the first screening bin 2, and the second screening bin 3.

[0033] In this embodiment, the vibrator 54 generates excitation force, and the spring 52 provides flexible support for the overall screen body, so that the discharge bin 1, the first screening bin 2 and the second screening bin 3 generate stable reciprocating vibration, thereby driving the internal screen to efficiently screen the material, and can also use vibration to assist the material flow during discharge to ensure smooth discharge.

[0034] Example 3:

[0035] Please see Figure 7 Furthermore, in conjunction with Embodiment 1 and Embodiment 2, the feeding mechanism 6 includes a sealing cover 61, which is fixedly installed on the top of the second screening chamber 3. A flexible tube 62 is provided on the top of the sealing cover 61. A discharge pipe 63 is fixedly installed at the end of the flexible tube 62 away from the sealing cover 61. A feeding pipe 64 is fixedly installed on the top of the discharge pipe 63. A feed hopper 65 is fixedly installed on the right end of the feeding pipe 64. A second motor 66 is fixedly installed on the left end of the feeding pipe 64. A feeding auger 67 is fixedly installed at the output end of the second motor 66 to facilitate intermittent feeding of flour.

[0036] Furthermore, a through groove is provided at the corresponding position of the feed hopper 65 and the feeding pipe 64, and the right end of the feeding pipe 64 is set inside the through groove. The feeding auger 67 is rotatably installed inside the feeding pipe 64, which facilitates the feeding auger 67 to feed flour.

[0037] In this embodiment, flour is added to the feed hopper 65, and the second motor 66 drives the auger to rotate, pushing the material along the feeding pipe 64 to the discharge pipe 63, and then falling into the sealing cover 61 through the flexible pipe 62, realizing quantitative and intermittent feeding. The flexible pipe 62 can buffer the impact of vibration on the feeding system, and the sealing cover 61 prevents dust from escaping and improves the working environment. The intermittent feeding method makes the amount of material entering the screen each time controllable, avoiding excessive feeding at one time and causing accumulation on the screen surface. With the timed opening of the arc-shaped gate 415, a "screening-discharge" cyclic operation mode is formed.

[0038] In actual operation, when this device is used, the vibrator 54 is first started. The vibrator 54 generates vibration, which, together with the spring 52, causes the mounting plate 51, the discharge bin 1, the first screening bin 2, and the second screening bin 3 to vibrate. Simultaneously, the first screen 423 and the second screen 424 inside are driven to vibrate, adding flour into the inside of the feed hopper 65. The second motor 66 drives the feeding auger 67 to rotate inside the feeding pipe 64, so that the feeding auger 67 feeds the flour into the feeding pipe 64 and discharges it through the discharge pipe 63. The flour is then fed into the inside of the sealing cover 61 through the flexible pipe 62. Flour is collected in the hopper 421 of the second screening chamber 3 and fed onto the first screen 423 through the discharge pipe 422. The flour is sieved through the first screen 423. Flour that passes through the first screen 423 enters the second screening chamber 3. Flour that cannot pass through the first screen 423 remains on the first screen 423 and is collected in the hopper 421 of the second screening chamber 3. Flour is fed onto the second screen 424 through the discharge pipe 422. The flour is sieved again through the second screen 424. Flour that passes through the second screen 424 enters the first discharge chamber 1. Flour that cannot pass through the second screen 424 remains on the second screen 424. The flour in the discharge chamber 1 is collected through the hopper 421 and the discharge pipe 422 inside the discharge chamber 1. After screening for a certain period of time, the second motor 66 is turned off, and feeding stops. The first motor 413 drives the gear 414 to rotate, causing the gear 414 to drive the toothed plate 417 to slide open on the guide rail 416. The toothed plate 417 then drives the arc-shaped gate 415 to open. At this time, the discharge ports 411 on the discharge bin 1, the first screening bin 2, and the second screening bin 3 open. Under the action of vibration, the flour on the discharge bin 1, the first screen 423, and the second screen 424 is discharged through the discharge ports 411. After the discharge is completed, the first motor 413 drives the gear 414 to reverse, causing the arc-shaped gate 415 to insert into the retaining rail 418 and close. Then, the above operation is repeated to continue feeding.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A grading and screening device for flour processing, comprising a discharge bin (1), characterized in that: The top of the discharge bin (1) is fixedly installed with a first screening bin (2), the top of the first screening bin (2) is fixedly installed with a second screening bin (3), the discharge bin (1), the first screening bin (2) and the second screening bin (3) are provided with screening and discharge mechanisms (4), the bottom of the discharge bin (1) is provided with a vibration mechanism (5), and the top of the second screening bin (3) is provided with a feeding mechanism (6). The screening and discharging mechanism (4) includes a discharging component (41) and a screening component (42). The discharging component (41) is located outside the discharging bin (1), the first screening bin (2) and the second screening bin (3) and extends into the inside. The screening component (42) is located inside the discharging bin (1), the first screening bin (2) and the second screening bin (3). The discharge assembly (41) includes a discharge port (411), which is located outside the discharge bin (1), the first screening bin (2) and the second screening bin (3). An installation bin (412) is fixedly installed outside the discharge bin (1), the first screening bin (2) and the second screening bin (3). A first motor (413) is fixedly installed inside the installation bin (412). A gear (414) is fixedly installed at the output end of the first motor (413). An arc-shaped gate (415) is slidably installed on the inner wall of the discharge bin (1), the first screening bin (2) and the second screening bin (3). A toothed plate (417) is fixedly installed on the outer side of the arc-shaped gate (415). A guide rail (416) is fixedly installed on the outer wall of the discharge bin (1), the first screening bin (2) and the second screening bin (3). A retaining rail (418) is fixedly installed on the inner wall of the discharge bin (1), the first screening bin (2) and the second screening bin (3).

2. The grading and screening device for flour processing according to claim 1, characterized in that: The discharge bin (1), the first screening bin (2) and the second screening bin (3) are provided with through slots at the corresponding positions of the arc-shaped gate (415), and the arc-shaped gate (415) is fixedly installed through the through slot and the toothed plate (417), and one end of the arc-shaped gate (415) is inserted into the inside of the rail (418).

3. The grading and screening device for flour processing according to claim 1, characterized in that: The toothed plate (417) is slidably mounted on the outside of the guide rail (416), and the gear (414) meshes with the toothed plate (417).

4. The grading and screening device for flour processing according to claim 1, characterized in that: The discharge components (41) on the discharge bin (1), the first screening bin (2) and the second screening bin (3) are staggered.

5. A grading and screening device for flour processing according to claim 1, characterized in that: The screening component (42) includes a collection hopper (421), which is fixedly installed on the top of the discharge bin (1), the first screening bin (2) and the second screening bin (3). A discharge pipe (422) is fixedly installed at the bottom of the collection hopper (421). A first screen (423) is fixedly installed inside the first screening bin (2) near the bottom. A second screen (424) is fixedly installed inside the second screening bin (3) near the bottom.

6. A grading and screening device for flour processing according to claim 5, characterized in that: The mesh diameter of the first screen (423) is smaller than that of the second screen (424), and the upper surfaces of the first screen (423) and the second screen (424) are upwardly convex arc-shaped structures.

7. A grading and screening device for flour processing according to claim 1, characterized in that: The vibration mechanism (5) includes a mounting plate (51), which is fixedly installed at the bottom of the discharge hopper (1). A spring (52) is fixedly installed at the bottom of the mounting plate (51). A base (53) is fixedly installed at the end of the spring (52) away from the mounting plate (51). A vibrator (54) is fixedly installed at the bottom of the mounting plate (51).

8. A grading and screening device for flour processing according to claim 7, characterized in that: Multiple springs (52) are provided, and the multiple springs (52) are arranged in a circumferential array.

9. A grading and screening device for flour processing according to claim 1, characterized in that: The feeding mechanism (6) includes a sealing cover (61), which is fixedly installed on the top of the second screening chamber (3). A flexible tube (62) is provided on the top of the sealing cover (61). A discharge pipe (63) is fixedly installed at the end of the flexible tube (62) away from the sealing cover (61). A feeding pipe (64) is fixedly installed on the top of the discharge pipe (63). A feed hopper (65) is fixedly installed on the right side of the feeding pipe (64). A second motor (66) is fixedly installed on the left side of the feeding pipe (64). A feeding auger (67) is fixedly installed at the output end of the second motor (66).

10. A grading and screening device for flour processing according to claim 9, characterized in that: The feed hopper (65) and the feed pipe (64) are provided with a through groove at the corresponding positions, and the right end of the feed pipe (64) is located inside the through groove. The feed auger (67) is rotatably installed inside the feed pipe (64).

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