A high-precision flour screening device and screening method for flour processing

Abstract

This invention discloses a high-precision flour screening device for flour processing, including a screening box with a screening screen inside. A flour conveyor belt is horizontally arranged below the screening screen, and a drying and turning mechanism is arranged above the flour conveyor belt. The drying and turning mechanism includes a drying chamber horizontally installed above the flour conveyor belt, with multiple heating wires arranged along its length inside the drying chamber. The drying and turning mechanism also includes a turning component for turning the flour on the upper surface of the flour conveyor belt. By combining the drying and turning mechanism, the flour conveyor belt, the screening box, and the screening screen, this invention can dry the flour on the flour conveyor belt during the flour screening process, while continuously turning the flour during drying to ensure that the flour at the bottom is turned to the top for drying, increasing the degree of flour drying, avoiding the flour from becoming damp and affecting its use and storage, and increasing the safety and stability of flour screening.

Description

Technical Field

[0001] This invention belongs to the technical field of flour screening equipment, specifically relating to a high-precision flour screening device and screening method for flour processing. Background Technology

[0002] Flour is a powdery substance made from milled wheat. Based on its protein content, flour can be classified into high-gluten flour, medium-gluten flour, low-gluten flour, and gluten-free flour. The flour production process requires screening equipment to separate flour particles of different sizes.

[0003] For example, CN113318971B discloses a high-precision flour screening device for flour processing. This invention provides a high-precision flour screening device that can quickly screen flour without requiring manual replacement of flour positions and allows for spaced placement of flour. The device includes a base plate and a frame. A frame is symmetrically welded to the top of the base plate. A manual screening mechanism is located on the upper part of the base plate, and a feeding mechanism is installed on the top of the base plate. This invention, by including the manual screening mechanism and the feeding mechanism, allows the flour to be screened, while the feeding mechanism allows the flour to slide onto the screening mechanism at intervals. The invention also includes an automatic screening mechanism and a manual screening mechanism, allowing the sieve to slide forward and backward at intervals, effectively reducing the labor intensity of workers. Furthermore, the invention, by combining the feeding control mechanism and the feeding mechanism, allows for the intermittent control of the amount of flour discharged.

[0004] In the aforementioned patent, flour may come into contact with air during the sieving process and bagging process, which may cause the flour to be corroded by moisture in the air, affecting the quality and use of the flour and causing additional waste. To address this issue, we propose a high-precision flour screening device and screening method for flour processing. Summary of the Invention

[0005] The purpose of this invention is to provide a high-precision flour screening device and screening method for flour processing, so as to solve the problem mentioned in the background art that flour may become damp during the process of moving with the conveyor belt.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-precision flour screening device for flour processing, comprising a screening box, a screening screen inside the screening box, a flour conveyor belt horizontally arranged below the screening screen, a drying and turning mechanism arranged above the flour conveyor belt, the drying and turning mechanism comprising a drying box horizontally installed above the flour conveyor belt, a plurality of heating wires arranged along the length of the drying box, and the drying and turning mechanism further comprising a turning component for turning the flour on the upper surface of the flour conveyor belt;

[0007] The turning component includes two connecting plates distributed along the X-axis, and a plurality of turning plates for turning flour are arranged between the two connecting plates along their length.

[0008] Preferably, the drying and turning mechanism further includes a drive motor fixed at the top of the drying chamber, with a drive shaft vertically arranged at the lower end of the drive motor, and a controller arranged on the upper surface of the drying chamber.

[0009] Preferably, a rotating component is provided between the drive shaft and the connecting plate. The rotating component includes a worm gear fixedly sleeved on the drive shaft, a worm wheel meshing with the right side of the worm gear, a mounting shaft embedded in the worm wheel, and a cam provided at the inner end of the mounting shaft.

[0010] Preferably, the front and rear surfaces of the drying oven are provided with uprights sleeved on the mounting shaft, and the inner surface of the cam is provided with a rotating shaft that is rotatably connected to the connecting plate.

[0011] Preferably, a frame is provided on the lower surface of the screening box, a support frame is provided on the right side of the screening box, and a horizontal plate is provided between the two to support the lower end of the drive shaft.

[0012] Preferably, the screening box has multiple screening screens horizontally arranged inside, a first conveying roller is embedded inside the screening box and located inside the flour conveyor belt, and a second conveying roller is installed inside the support frame at the right end of the flour conveyor belt. Both the first and second conveying rollers are fitted with sprockets at their front ends.

[0013] Preferably, a feed hopper is provided on the top of the screening box, and the two ends of the drying box are respectively fixed to the inner sides of the screening box and the rotating component.

[0014] Preferably, a driving component is provided between the plurality of second conveying rollers. The driving component includes an upper gear fixedly sleeved on the front end of the upper second conveying roller, a drive gear fixedly sleeved on the front end of the middle second conveying roller, and a lower gear fixedly sleeved on the front end of the lower second conveying roller.

[0015] Preferably, a working motor is provided at the front end of the second conveying roller in the middle, and a feeding plate is provided on the right side of the support frame, located below the flour conveyor belt.

[0016] A method for screening high-precision flour for flour processing involves feeding unscreened flour into a screening box from a feed hopper, where it is screened layer by layer through multiple screening screens. The flour after passing through each screening screen falls onto a flour conveyor belt. The flour conveyor belt is driven by a linkage component, allowing multiple flour conveyor belts to rotate synchronously. The flour is conveyed to the right along the flour conveyor belt. When the flour passes under an electric heating wire, it is dried. During the drying process, a drive motor drives a rotating component to rotate, which in turn causes a turning component to turn over the flour on the surface of the flour conveyor belt, allowing it to be fully dried by the electric heating wire.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] This invention combines a drying and turning mechanism, a flour conveyor belt, a screening box, and a screening screen to dry the flour on the flour conveyor belt during the flour screening process. While drying, the flour is continuously turned over to ensure that the flour at the bottom is turned over to the top for drying, thereby increasing the degree of flour drying and preventing the flour from getting damp, which would affect its use and storage. This also increases the safety and stability of flour screening.

[0019] This invention, through its designed drive component, enables multiple flour conveyor belts to rotate synchronously in opposite directions, allowing the flour to circulate through different sieving screens for sieving. This increases the convenience and efficiency of flour sieving, and the flour after multiple sieving can be centrally processed and collected. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the flour screening equipment of the present invention;

[0021] Figure 2 This is a bottom view of the flour screening device of the present invention.

[0022] Figure 3 For the present invention Figure 1 Schematic diagram of the drying and turning mechanism;

[0023] Figure 4 For the present invention Figure 3 A bottom view of the structure of the central tilting component;

[0024] Figure 5 For the present invention Figure 4 Schematic diagram of the rotating component in the middle;

[0025] Figure 6 For the present invention Figure 1 Right view of the structure of the intermediate screening box;

[0026] Figure 7 For the present invention Figure 1 Schematic diagram of the drive component;

[0027] In the diagram: 100, screening box; 101, feed hopper; 102, flour conveyor belt; 1021, first conveyor roller; 1022, sprocket; 1023, second conveyor roller; 103, discharge plate; 104, support frame; 105, screening screen; 106, frame; 200, drying and turning mechanism; 201, drying box; 202, controller; 203, drive motor; 204, rotating component; 2041, worm gear; 2042, worm wheel; 2043, mounting shaft; 2044, cam; 2045, rotating shaft; 205, drive shaft; 206, turning component; 2061, connecting plate; 2062, turning plate; 207, heating wire; 300, drive component; 301, drive gear; 302, working motor; 303, lower gear; 304, upper gear. Detailed Implementation

[0028] 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.

[0029] Example 1

[0030] Please see Figures 1-5 This invention provides a technical solution: a high-precision flour screening device for flour processing, comprising a screening box 100, a screening screen 105 inside the screening box 100, the screening screen 105 being capable of multi-stage screening of flour, a flour conveyor belt 102 horizontally positioned below the screening screen 105, and a drying and turning mechanism 200 positioned above the flour conveyor belt 102. The drying and turning mechanism 200 dries the flour on the flour conveyor belt 102 during the flour screening process, while simultaneously maintaining continuous turning of the flour to ensure that the flour at the bottom is turned to the top for drying, thereby increasing the degree of flour drying and avoiding... To prevent flour from getting damp and affecting its use and storage, the drying and turning mechanism 200 includes a drying box 201 horizontally installed above the flour conveyor belt 102. Multiple heating wires 207 are arranged along the length of the drying box 201. Sufficient distance is left between the heating wires 207 and the flour conveyor belt 102. At the same time, a protective sleeve can be added to the outer layer of the heating wires 207 to generate a suitable temperature for drying the flour without damaging it. The drying and turning mechanism 200 also includes a turning component 206 for turning the flour on the upper surface of the flour conveyor belt 102. The turning component 206 can continuously turn the flour.

[0031] The flipping component 206 includes two connecting plates 2061 distributed along the X-axis direction. The connecting plates 2061 connect and fix multiple flipping plates 2062, which facilitates the synchronous movement of multiple flipping plates 2062. Multiple flipping plates 2062 for flipping flour are arranged between the two connecting plates 2061 along their length direction. The multiple flipping plates 2062 are distributed along the length direction of the flour conveyor belt 102 and are installed vertically.

[0032] In this embodiment, preferably, the drying turning mechanism 200 also includes a drive motor 203 fixed at the top of the drying box 201, and a support frame is provided between the two to increase the installation strength of the drive motor 203. A drive shaft 205 is vertically provided at the lower end of the drive motor 203. The operation of the drive motor 203 can drive the drive shaft 205 to rotate. A controller 202 is provided on the upper surface of the drying box 201.

[0033] In this embodiment, preferably, a rotating component 204 is provided between the drive shaft 205 and the connecting plate 2061. As the drive shaft 205 rotates, it can work in conjunction with the drying rotating component 204 to drive multiple turning components 206 to work synchronously. The rotating component 204 drives multiple drying rotating components 204, including a worm 2041 fixedly sleeved on the drive shaft 205. A worm wheel 2042 is meshed on the right side of the worm 2041. A mounting shaft 2043 is embedded in the worm wheel 2042. A cam 2044 is provided at the inner end of the mounting shaft 2043 to facilitate the rotation of the cam 2044 with the worm wheel 2042.

[0034] In this embodiment, preferably, the front and rear surfaces of the drying box 201 are provided with a stand sleeved on the mounting shaft 2043, which can support the mounting shaft 2043 without affecting the rotation of the mounting shaft 2043. The inner surface of the cam 2044 is provided with a rotating shaft 2045 that is rotatably connected to the connecting plate 2061. The rotating shaft 2045 is eccentrically set on the cam 2044. As the cam 2044 rotates, it can drive the rotating shaft 2045 to rotate, and drive the flipping plate 2062 to move circumferentially. While the flipping plate 2062 moves circumferentially, it moves the flour on the flour conveyor belt 102.

[0035] In this embodiment, preferably, a frame 106 is provided on the lower surface of the screening box 100, which can support the screening box 100. The two are fixed together by screws, which facilitates disassembly and assembly. A support frame 104 is provided on the right side of the screening box 100, and a horizontal plate is provided between the two to support the lower end of the drive shaft 205. This does not affect the rotation of the drive shaft 205, and can also provide support and stability for the drive shaft 205.

[0036] In summary, during operation, flour enters the screening box 100 through the feed hopper 101. After being screened by the first screening screen 105, the flour falls onto the first flour conveyor belt 102. As the flour moves along the flour conveyor belt 102 to below the drying box 201, the drive motor 203 operates, causing the lower drive shaft 205 to rotate. This drives the worm gear 2041 on the worm gear 2041 to rotate, and the meshing worm wheel 2042 rotates, causing the mounting shaft 2043 on the worm gear 2043 to rotate. The cam 2044 rotates along with the mounting shaft 2043, and the cam 2044 drives the rotating shaft 2045 on the cam 2044 to rotate. As the rotating shaft 2045 rotates, the connecting plate 2061 moves along the circumference of the rotating shaft 2045. The connecting plate 2061 is rotatably connected to the rotating shaft 2045, so the connecting plate 2061 does not rotate while moving. The connecting plate 2061 drives the flipping plate 2062 to move circumferentially. When the lower end of the flipping plate 2062 extends to the upper surface of the flour conveyor belt 102, as the flipping plate 2062 moves circumferentially, the flour it contacts is flipped along with the circumferential movement. As the flour conveyor belt 102 moves, the drive motor 203 works, driving the drying and flipping mechanism 200 to work continuously, causing the flipping plate 2062 to flip continuously, thereby continuously flipping the flour on the flour conveyor belt 102. This allows the heating wire 207 and the controller 202 to work to dry the sieved flour. In addition, drying boxes 201 and flipping components 206 are set above several flour conveyor belts 102, which can ensure continuous drying of the flour during the sieving process, ensuring that the flour is always dry when it is discharged and collected, increasing the stability of the flour being sieved and improving the sieving efficiency.

[0037] Example 2

[0038] Reference Figure 6 This is the second embodiment of the present invention, which differs from the previous embodiment in that...

[0039] In this embodiment, preferably, multiple screening screens 105 are horizontally arranged inside the screening box 100, with the second screening screen 105 located in the support frame 104 and above the right end of the second flour conveyor belt 102. The three screening screens 105 cooperate with the three flour conveyor belts 102, and all screening screens 105 are positioned above the flour conveyor belts 102, enabling synchronous conveying of flour of different particle sizes and improving flour screening and conveying efficiency. A first conveying roller 1021 is embedded inside the screening box 100 and located inside the flour conveyor belt 102. A bearing is embedded between the screening box 100 and the first conveying roller 1021 to facilitate the rotation of the first conveying roller 1021. A second conveying roller 1021 is installed inside the support frame 104 at the right end of the flour conveyor belt 102. Two conveyor rollers 1023 are installed with bearings embedded between the second conveyor roller 1023 and the support frame 104 to facilitate the rotation of the second conveyor roller 1023. The front ends of the first conveyor roller 1021 and the second conveyor roller 1023 are both fitted with sprockets 1022. A chain can be fitted between the two sprockets 1022 to facilitate the synchronous rotation of the two sprockets 1022, thereby driving the flour conveyor belt 102 to rotate. The right end of the first flour conveyor belt 102 is located in the middle of the second sieve 105, so that the flour on the first flour conveyor belt 102 can fall onto the second sieve 105. The left end of the second flour conveyor belt 102 is located in the middle of the third sieve 105, so that the flour on the second flour conveyor belt 102 can fall onto the third sieve 105.

[0040] In this embodiment, preferably, a feeding hopper 101 is provided on the top of the sieving box 100 to facilitate the feeding of unsifted flour into the feeding hopper 101. The two ends of the drying box 201 are respectively fixed to the inner sides of the sieving box 100 and the rotating component 204. The drying box 201 is located above the flour conveyor belt 102 and does not affect the flour conveying.

[0041] In summary, during use, unscreened flour enters the screening box 100 from the feed hopper 101. The flour is screened through the first screening screen 105. The screened flour falls onto the first clockwise moving flour conveyor belt 102. When the flour moves onto the first flour conveyor belt 102, it falls onto the second screening screen 105 from the right end for screening. The screened flour falls onto the second counterclockwise moving flour conveyor belt 102. After moving to the left end, the flour falls onto the third screening screen 105. After the third screening, the fine flour falls onto the third clockwise moving flour conveyor belt 102 and moves to the right. The flour moves to the right end and falls onto the discharge plate 103. It is then discharged downwards along the inclined surface of the discharge plate 103 and collected in the collection bag below. The entire process realizes continuous screening of flour circulation, improving the efficiency of multiple screening of flour.

[0042] Example 3

[0043] Reference Figure 7 This is the third embodiment of the present invention, which differs from the previous embodiment in that...

[0044] In this embodiment, preferably, a driving component 300 is provided between the multiple second conveying rollers 1023. Using the driving component 300, multiple flour conveyor belts 102 can rotate synchronously in a circular motion, causing the conveying directions of the multiple flour conveyor belts 102 to be opposite, circulating the flour through different screening screens 105 for screening, increasing the convenience and efficiency of flour screening. The driving component 300 includes an upper gear 304 fixedly sleeved on the front end of the upper second conveying roller 1023, and a driving gear 301 fixedly sleeved on the front end of the middle second conveying roller 1023. As the driving gear 301 rotates, it can drive the upper gear 304 and lower gear 303 meshing on the upper and lower sides. The upper gear 304 and the lower gear 303 rotate clockwise when the drive gear 301 rotates counterclockwise. The lower gear 303 is fixedly sleeved at the front end of the lower second conveyor roller 1023, and the working motor 302 is set at the front end of the middle second conveyor roller 1023. A stabilizing frame is set between the working motor 302 and the support frame 104 to increase the installation strength of the working motor 302. The right side of the support frame 104 is inclined to set a feeding plate 103 below the flour conveyor belt 102. A collection bag can be set below the feeding plate 103 to facilitate the collection of fine flour after sieving. The flour after multiple sievings finally falls into the feeding plate 103 for discharge and collection.

[0045] In summary, during use, the working motor 302 operates, driving the drive gear 301 in the middle position to rotate. The second conveyor roller 1023 in the middle position rotates synchronously, as do the upper gear 304 and lower gear 303 meshing with the drive gear 301. This causes the upper and lower second conveyor rollers 1023 to rotate synchronously, resulting in the second conveyor roller 1023 in the middle position rotating in the opposite direction to the two upper and lower second conveyor rollers 1023. For example, the uppermost flour conveyor belt 102 rotates clockwise, while the lower second flour conveyor belt 102 rotates counterclockwise, and the lower third flour conveyor belt 102 rotates clockwise. This causes the three conveyor belts to move in an S-shaped direction and pass through three screening screens 105 for screening. The screened fine flour falls into the discharge plate 103 and is collected through the discharge plate 103, increasing the continuity and convenience of multiple screening of flour.

[0046] Example 4

[0047] This embodiment is obtained by combining Embodiment 1, Embodiment 2 and Embodiment 3.

[0048] A method for screening high-precision flour for flour processing involves feeding unscreened flour from a hopper 101 into a screening box 100, where it is screened layer by layer through multiple screening screens 105. The aperture of the multiple screening screens 105 decreases from top to bottom, increasing the screening accuracy of the flour. The flour after passing through each layer of screening screens 105 falls onto a flour conveyor belt 102. The flour conveyor belt 102 is driven by a drive component 300 to rotate synchronously. The flour is conveyed to the right along with the flour conveyor belt 102. When the flour passes under the heating wire 207, it is dried. During the drying process, a drive motor 203 drives a rotating component 204 to rotate, and a turning component 206 turns the flour, causing the accumulated flour to turn from the bottom to the top for better drying. The flour on the upper surface of the flour conveyor belt 102 is turned and fully dried by the heating wire 207.

[0049] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-precision flour screening device for flour processing, comprising a screening box (100), characterized in that: The sieving box (100) is equipped with a sieving screen (105) inside. A flour conveyor belt (102) is horizontally arranged below the sieving screen (105). A drying and turning mechanism (200) is arranged above the flour conveyor belt (102). The drying and turning mechanism (200) includes a drying box (201) horizontally installed above the flour conveyor belt (102). A plurality of heating wires (207) are arranged inside the drying box (201) along its length. The drying and turning mechanism (200) also includes a turning component (206) for turning the flour on the upper surface of the flour conveyor belt (102). The turning component (206) includes two connecting plates (2061) distributed along the X-axis direction, and a plurality of turning plates (2062) for turning flour are arranged between the two connecting plates (2061) along their length direction. The screening box (100) is horizontally provided with multiple screening screens (105). The screening box (100) is embedded with a first conveying roller (1021) located inside the flour conveyor belt (102). The flour conveyor belt (102) is provided with a second conveying roller (1023) installed inside the support frame (104) at the right end. The front ends of the first conveying roller (1021) and the second conveying roller (1023) are both fitted with sprockets (1022). The top of the screening box (100) is provided with a feed hopper (101), and the two ends of the drying box (201) are respectively fixed to the inner side of the screening box (100) and the rotating component (204); A drive member (300) is provided between a plurality of second conveying rollers (1023). The drive member (300) includes an upper gear (304) fixedly sleeved on the front end of the upper second conveying roller (1023), a drive gear (301) fixedly sleeved on the front end of the middle second conveying roller (1023), and a lower gear (303) fixedly sleeved on the front end of the lower second conveying roller (1023).

2. The high-precision flour screening equipment for flour processing according to claim 1, characterized in that: The drying and turning mechanism (200) also includes a drive motor (203) fixed at the top of the drying box (201), with a drive shaft (205) vertically arranged at the lower end of the drive motor (203), and a controller (202) arranged on the upper surface of the drying box (201).

3. The high-precision flour screening equipment for flour processing according to claim 2, characterized in that: A rotating component (204) is provided between the drive shaft (205) and the connecting plate (2061). The rotating component (204) includes a worm (2041) fixedly sleeved on the drive shaft (205). A worm wheel (2042) is meshed on the right side of the worm (2041). An installation shaft (2043) is embedded in the worm wheel (2042). A cam (2044) is provided at the inner end of the installation shaft (2043).

4. The high-precision flour screening equipment for flour processing according to claim 3, characterized in that: The drying oven (201) has a stand on the front and rear surfaces that is sleeved on the mounting shaft (2043), and the inner surface of the cam (2044) has a rotating shaft (2045) that is rotatably connected to the connecting plate (2061).

5. The high-precision flour screening equipment for flour processing according to claim 1, characterized in that: The screening box (100) is provided with a frame (106) on its lower surface, and a support frame (104) is provided on the right side of the screening box (100), and a horizontal plate is provided between the two to support the lower end of the drive shaft (205).

6. The high-precision flour screening equipment for flour processing according to claim 1, characterized in that: Furthermore, a working motor (302) is provided at the front end of the second conveying roller (1023) in the middle, and a feeding plate (103) is inclined on the right side of the support frame (104) and located below the flour conveyor belt (102).

7. A method for screening high-precision flour for flour processing, applied to the high-precision flour screening equipment for flour processing as described in any one of claims 3-4, characterized in that: Unscreened flour can be fed from the feed hopper (101) into the screening box (100) and screened through multiple screening screens (105). The flour after being screened by each screening screen (105) falls onto the flour conveyor belt (102). The flour conveyor belt (102) is driven by the drive component (300) so that multiple flour conveyor belts (102) can rotate synchronously. The flour is conveyed to the right along with the flour conveyor belt (102). The flour is dried when it passes under the heating wire (207). During the drying process, the drive motor (203) drives the rotating component (204) to rotate and the turning component (206) to turn over the flour on the surface of the flour conveyor belt (102) and fully dry it with the heating wire (207).

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