A cake premix powder screening device

Abstract

The utility model relates to the technical field of cake production, especially to a cake premix powder screening device, including the aggregate cylinder, the outer wall fixed mounting of aggregate cylinder has the support seat, the outer wall fixed connection of support seat has the mounting panel, the upper surface fixed mounting of mounting panel has the drive motor, and the output passes through the drive structure with screening cylinder drive connection of drive motor, and screening cylinder coaxial is arranged in the aggregate cylinder inside, and the top of screening cylinder is connected with the cleaning cylinder through the transmission structure, and the inner wall bottom of aggregate cylinder is provided with the discharge assembly, and the top of aggregate cylinder is fixedly connected with the feeding hopper through the fixing frame, the utility model discloses through the collaborative structure of " screening cylinder + cleaning cylinder + brush hair", makes the brush hair of cleaning cylinder inner wall always closely combined with screening cylinder outer wall. This dynamic cleaning design can remove the premix powder fine powder attached to the inside of the screen hole in real time, avoid the problem of screen hole blockage after long-term use from the root, and ensure that the screening process is always smooth, without frequent shutdown cleaning.

Description

Technical Field

[0001] This utility model relates to the field of pastry production technology, and in particular to a pastry premix powder screening device. Background Technology

[0002] In the pastry manufacturing industry, premixed powder is a core ingredient, and its quality directly determines the final taste, texture, and appearance of the pastries. With consumers' increasing demands for pastry quality and the rapid development of the food industry towards automation and refinement, the market has imposed more stringent standards on the particle uniformity and purity of premixed powder. This not only requires the particle size to meet precise processing parameters but also necessitates the complete removal of any lumps or impurities (such as bran fragments, metal particles, and pebbles) from the raw materials to avoid affecting the baking results and food safety of the pastries.

[0003] Existing premixed powder screening devices, such as the pastry premixed powder screening device disclosed in CN216297035U, improve the screening efficiency of pastry premixed powder by setting a rotatable screening shell inside the collection shell, and performing screening operation on the screening shell under the action of centrifugal force of rotation of the screening shell. However, during the screening process, since the screening device does not have a cleaning device, fine powder is prone to static electricity generated by friction with the wall of the sieve hole, or slight agglomeration due to the influence of environmental humidity, and then adheres to the inside of the sieve hole, which will lead to sieve hole blockage after long-term use. Utility Model Content

[0004] The purpose of this invention is to solve the problem that in the existing screening process, since the screening device does not have a cleaning device, fine powder is prone to static electricity due to friction with the wall of the sieve hole, or slight agglomeration due to the influence of environmental humidity, and then adheres to the inside of the sieve hole, which will lead to sieve hole blockage after long-term use. Therefore, a premixed pastry powder screening device is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A premixed pastry powder screening device includes a collection cylinder. A support base is fixedly installed circumferentially on the outer wall of the collection cylinder. A horizontally arranged mounting plate is fixedly connected to the outer wall of the support base. A drive motor is fixedly installed on the upper surface of the mounting plate. The output end of the drive motor is connected to the screening cylinder through a drive structure to drive the screening cylinder to rotate around its own axis. The screening cylinder is coaxially arranged inside the collection cylinder, and the top of the screening cylinder is connected to a cleaning cylinder through a transmission structure. Brush bristles are fixedly arranged on the inner wall of the cleaning cylinder. The brush bristles are in close contact with the outer wall of the screening cylinder to clean the sieve holes on the outer wall when the screening cylinder rotates, reducing the probability of clogging. The bottom of the inner wall of the collecting cylinder is provided with a discharge component for collecting and discharging the screened premixed powder; the top of the collecting cylinder is fixedly connected to a feeding hopper by a fixing frame, and the bottom discharge port of the feeding hopper is set directly opposite the top opening of the cleaning cylinder, so that the premixed powder can fall into the cleaning cylinder through the feeding hopper and enter the screening cylinder for screening. Preferably, the drive structure includes a first pulley, a second pulley, and a belt; the first pulley is fixedly connected to the output end of the drive motor via a flat key, and the second pulley is coaxially fixedly connected to the outer wall of the bottom outlet of the screening cylinder; the first pulley and the second pulley are connected by belt drive, and the axes of the first pulley and the second pulley are arranged parallel to each other. Preferably, the transmission structure includes a connecting cylinder coaxially fixedly connected to the outer wall of the top of the screening cylinder, the outer wall of the connecting cylinder being rotatably connected to the inner wall of the top of the collecting cylinder via a bearing; a gear ring is coaxially fixedly connected to the outer wall of the top of the connecting cylinder; at least three pairs of mounting blocks are fixedly connected circumferentially to the inner wall of the collecting cylinder, each pair of mounting blocks being arranged in an array along the axial direction of the collecting cylinder; a transmission shaft is rotatably connected between each pair of mounting blocks, the top end of the transmission shaft penetrating the outer wall of the top of the collecting cylinder and fixedly connected to a gear, the gear meshing with the gear ring; the cleaning cylinder is fixedly connected to the end of the transmission shaft away from the gear, and the cleaning cylinder is arranged parallel to the screening cylinder.

[0006] Preferably, the mounting blocks are provided in three pairs, and the three pairs of mounting blocks are evenly distributed along the circumference of the collecting cylinder; each pair of mounting blocks is provided with a corresponding cleaning cylinder, and the three cleaning cylinders are evenly distributed along the circumference of the screening cylinder. Preferably, the discharge assembly includes a scraper fixedly connected to the bottom outer wall of the screening cylinder, the scraper extending radially along the screening cylinder; the bottom of the inner wall of the collecting cylinder is provided with an annular collecting groove coaxially arranged with the screening cylinder, the bottom of the collecting groove is connected to at least one discharge pipe, and the discharge pipe penetrates the bottom outer wall of the collecting cylinder. Preferably, the bottom of the scraper has an arc-shaped structure, and the arc-shaped structure is perfectly adapted to the shape of the inner wall of the collection trough, so that the scraper can slide against the inner wall of the collection trough; the discharge pipe is equipped with a valve that is manually or electrically controlled to control the opening and closing of the discharge pipe.

[0007] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. In use, this utility model utilizes a synergistic structure of "screening cylinder + cleaning cylinder + brush bristles." While the screening cylinder rotates around its own axis, the cleaning cylinder moves synchronously via a transmission structure, ensuring that the brush bristles on the inner wall of the cleaning cylinder are always in close contact with the outer wall of the screening cylinder. This dynamic cleaning design can remove fine premixed powder adhering to the inner side of the sieve holes in real time—whether it's fine powder adsorbed due to static electricity from friction or powder particles slightly agglomerated due to environmental humidity, all can be peeled off through continuous wiping with the brush bristles. This fundamentally avoids the problem of sieve hole clogging after long-term use, ensuring a smooth screening process without frequent shutdowns for cleaning, and significantly improving the continuous operation capability of the equipment.

[0008] 2. In use, this utility model allows for precise adaptation between the scraper at the bottom of the screening cylinder and the annular collecting trough on the inner wall of the collecting cylinder. As the screening cylinder rotates, the scraper's arc-shaped bottom slides completely against the inner wall of the collecting trough, thoroughly scraping the screened premixed powder into the collecting trough and preventing powder particles from remaining at the bottom of the collecting cylinder and causing waste. At the same time, the discharge pipe connected to the bottom of the collecting trough, equipped with manual or electric valves, allows for flexible control of the discharge timing and speed. This facilitates adjustments by operators according to the production rhythm and prevents premixed powder from scattering during the discharge process, further reducing raw material loss and subsequent cleaning workload. Attached Figure Description

[0009] Figure 1 This is a three-dimensional structural diagram of a pastry premix powder screening device proposed in this utility model; Figure 2 This is a cross-sectional view of a premixed pastry powder screening device proposed in this utility model; Figure 3 This is an enlarged view of section A of the structure of the premixed pastry powder screening device proposed in this utility model; Figure 4 This is a three-dimensional structural diagram of the driving structure of a pastry premix powder screening device proposed in this utility model.

[0010] In the diagram: 1. Collection cylinder; 2. Support base; 3. Mounting plate; 4. Drive motor; 5. Screening cylinder; 6. Cleaning cylinder; 7. Discharge assembly; 8. Feed hopper; 9. Pulley 1; 10. Pulley 2; 11. Belt; 12. Connecting cylinder; 13. Gear ring; 14. Mounting block; 15. Drive shaft; 16. Brush bristles; 17. Gear; 18. Scraper; 19. Collection trough; 20. Discharge pipe. Detailed Implementation

[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0012] Reference Figures 1-4 A premixed pastry powder screening device includes a collection cylinder 1, which is a cylindrical structure with an open top and a closed bottom. Support seats 2 are fixedly installed at equal intervals along the circumference of the outer wall of the collection cylinder 1. The support seats 2 have three support legs of the same height, and a horizontally set mounting plate 3 is welded and fixed to the outer wall of the support seats 2. A drive motor 4 is fixedly installed on the upper surface of the mounting plate 3 by bolts. The drive motor 4 is a three-phase asynchronous motor of model Y80M1-2. Its output end is connected to the screening cylinder 5 through a drive structure to drive the screening cylinder 5 to rotate clockwise around its own axis. The rotation speed is controlled at 30-50 r / min. The screening cylinder 5 is the prior art used in this field. The screening cylinder 5 consists of three screening cages, namely the top screening cage, the middle screening cage, and the bottom screening cage. Each of the three screening cages includes a feed top plate and a screening shell. The feed top plate is in the shape of an inverted funnel, and the screening shell is a cylindrical shell with a narrow bottom (not sealed). The bottom end of the feed top plate is fixedly connected to the top end of the screening shell. The screening shell is made of steel screen mesh, so it will not be described in detail. The screening cylinder 5 is coaxially arranged inside the collecting cylinder 1, and the top of the screening cylinder 5 is connected to three cleaning cylinders 6 through a transmission structure. Each cleaning cylinder 6 has brush bristles 16 bonded to its inner wall. The brush bristles 16 are made of nylon and their length is adapted to the distance between the cleaning cylinder 6 and the screening cylinder 5, so that the brush bristles 16 can fit tightly against the outer wall of the screening cylinder 5. This is used to clean the screen holes on the outer wall of the screening cylinder 5 when it rotates, reducing the probability of clogging. The bottom of the inner wall of the collecting cylinder 1 is provided with a discharge component 7 for collecting and discharging the screened premixed powder. The top of the collecting cylinder 1 is fixedly connected to the feeding hopper 8 by a ring-shaped fixing bracket bolt. The feeding hopper 8 is a funnel-shaped structure that is wider at the top and narrower at the bottom. The diameter of its bottom discharge port is the same as the diameter of the top opening of the cleaning cylinder 6. The bottom discharge port of the feeding hopper 8 is set directly opposite the top opening of the cleaning cylinder 6, so that the premixed powder can fall into the cleaning cylinder 6 through the feeding hopper 8 and slide along the inner wall of the cleaning cylinder 6 into the screening cylinder 5 for screening. The drive structure includes pulley 9, pulley 10, and belt 11. The inner hole of pulley 9 is fixedly connected to the output end of the drive motor 4 by a key interference fit, and the diameter of pulley 9 is 80-100mm. The inner hole of pulley 10 is fixedly connected to the outer wall of the bottom outlet of the screening cylinder 5 by welding, and the diameter of pulley 10 is 200-250mm. The axes of pulley 9 and pulley 10 are parallel. The belt 11 is a polyurethane synchronous belt, and its inner ring teeth mesh with the outer ring teeth of pulley 9 and pulley 10 respectively, so as to realize the transmission of power from the drive motor 4 to the screening cylinder 5. The transmission structure includes a connecting cylinder 12, which is coaxially fixedly connected to the top outer wall of the screening cylinder 5 by welding. The connecting cylinder 12 is a hollow cylindrical structure, and its outer wall is rotatably connected to the top inner wall of the collecting cylinder 1 by a deep groove ball bearing. The bearing model is 6204. A toothed ring 13 is coaxially fixedly connected to the top outer wall of the connecting cylinder 12 by a key. The toothed ring 13 has a module of 2 and 60 teeth. Three pairs of mounting blocks 14 are fixedly fixedly connected to the inner wall of the collecting cylinder 1 at equal intervals along the circumference. Each pair of mounting blocks 14 is arranged in an array along the axial direction of the collecting cylinder 1, and each pair of mounting blocks 14 is rotatably connected by a transmission rod through a bearing. The drive shaft 15 has its axis parallel to the axis of the screening cylinder 5. The top end of the drive shaft 15 passes through the top outer wall of the collecting cylinder 1 and is fixedly connected to the gear 17 via a flat key. The gear 17 has the same module as the gear ring 13 and has 20 teeth. The gear 17 meshes with the gear ring 13. The cleaning cylinder 6 is fixedly connected to the end of the drive shaft 15 away from the gear 17 by welding. The cleaning cylinder 6 is set parallel to the screening cylinder 5. When the screening cylinder 5 rotates, the meshing transmission between the gear ring 13 and the gear 17 drives the cleaning cylinder 6 to rotate around the axis of the drive shaft 15. The direction of rotation is opposite to that of the screening cylinder 5. The discharge assembly 7 includes a scraper 18 that is bolted to the bottom outer wall of the screening cylinder 5. The scraper 18 is made of stainless steel and extends radially along the screening cylinder 5. The length of the scraper 18 is adapted to the distance between the outer wall of the screening cylinder 5 and the inner wall of the collecting cylinder 1. The bottom of the inner wall of the collecting cylinder 1 is provided with an annular collecting trough 19 that is coaxially arranged with the screening cylinder 5. The cross-section of the collecting trough 19 is arc-shaped, with a depth of 50-80 mm and a width of 30-50 mm. Three discharge pipes 20 are equidistantly connected to the bottom of the collecting trough 19. The diameter of the discharge pipes 20 is 50-80 mm, and the discharge pipes 20 penetrate vertically through the bottom outer wall of the collecting cylinder 1 and are welded to the collecting cylinder 1.

[0013] Furthermore, the bottom of the scraper 18 has an arc-shaped structure, and the radius of curvature and arc of the arc-shaped structure are perfectly matched with the inner wall shape of the collection trough 19, so that the scraper 18 can slide against the inner wall of the collection trough 19. When the screening cylinder 5 rotates, it drives the scraper 18 to rotate synchronously, pushing the premixed powder in the collection trough 19 towards the discharge pipe 20. The discharge pipe 20 is equipped with an electrically controlled butterfly valve, the valve model is D971X-10, which is connected to an external controller through a wire to control the opening and closing of the discharge pipe 20, so as to realize the quantitative discharge of the premixed powder.

[0014] It should be noted that the specific model and specifications of the drive motor 4 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be elaborated here. All of them can be powered by external devices and controlled to turn on and off.

[0015] Working principle: First, the premixed powder is poured into the feeding hopper 8. The powder is guided evenly by the funnel-shaped structure into the three cleaning cylinders 6, and then slides along the cylinder wall into the rotating screening cylinder 5. The drive motor 4 is started, and through the drive structure consisting of pulley 9, belt 11, and pulley 10, the screening cylinder 5 is rotated clockwise at a speed of 30-50 r / min. The powder is repeatedly thrown in the screening cylinder 5 as it rotates. Fine powder falls through the screen of the three-layer screening cage into the bottom of the collection cylinder 1, while coarse material remains in the cylinder to complete the grading and screening.

[0016] Meanwhile, the top of the screening cylinder 5 drives three sets of gears 17 via the gear ring 13 of the connecting cylinder 12, causing the cleaning cylinder 6 to rotate around the screening cylinder 5 in the opposite direction. Nylon bristles 16 continuously scrape the outer wall of the screening cylinder to prevent clogging of the screen holes. Powder that falls to the bottom of the collecting cylinder 1 is collected by the annular collecting trough 19 and pushed to the three discharge pipes 20 by the rotating scraper 18. Finally, the discharge pipes 20 are opened and closed by an electric butterfly valve to achieve quantitative discharge of the premixed powder, completing the fully automated screening operation.

[0017] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A premixed pastry powder screening device, comprising a collection cylinder (1), characterized in that: A support base (2) is fixedly installed on the outer wall of the collection cylinder (1) along the circumferential direction. A horizontally arranged mounting plate (3) is fixedly connected to the outer wall of the support base (2). A drive motor (4) is fixedly installed on the upper surface of the mounting plate (3). The output end of the drive motor (4) is connected to the screening cylinder (5) through a drive structure to drive the screening cylinder (5) to rotate around its own axis. The screening cylinder (5) is coaxially arranged inside the collection cylinder (1), and the top of the screening cylinder (5) is connected to the cleaning cylinder (6) through a transmission structure. The inner wall of the cleaning cylinder (6) is fixedly provided with bristles (16). The bristles (16) are closely attached to the outer wall of the screening cylinder (5) to clean the screen holes on its outer wall when the screening cylinder (5) rotates, thereby reducing the probability of clogging. The bottom of the inner wall of the collecting cylinder (1) is provided with a discharge component (7) for collecting and discharging the premixed powder after screening; the top of the collecting cylinder (1) is fixedly connected to a feeding hopper (8) by a fixing frame, and the bottom discharge port of the feeding hopper (8) is set directly opposite the top opening of the cleaning cylinder (6) so that the premixed powder can fall into the cleaning cylinder (6) through the feeding hopper (8) and enter the screening cylinder (5) for screening.

2. The pastry premix powder screening device according to claim 1, characterized in that; The drive structure includes a pulley one (9), a pulley two (10), and a belt (11); the pulley one (9) is fixedly connected to the output end of the drive motor (4) by a flat key, and the pulley two (10) is fixedly connected to the outer wall of the bottom outlet of the screening cylinder (5) coaxially; the pulley one (9) and the pulley two (10) are connected by a belt (11) for transmission, and the axes of the pulley one (9) and the pulley two (10) are set parallel to each other.

3. The pastry premix powder screening device according to claim 1, characterized in that; The transmission structure includes a connecting cylinder (12) coaxially fixedly connected to the outer wall of the top of the screening cylinder (5). The outer wall of the connecting cylinder (12) is rotatably connected to the inner wall of the top of the collecting cylinder (1) through a bearing. A toothed ring (13) is coaxially fixedly connected to the outer wall of the top of the connecting cylinder (12). At least three pairs of mounting blocks (14) are fixedly connected to the inner wall of the collecting cylinder (1) circumferentially. Each pair of mounting blocks (14) is arranged in an array along the axial direction of the collecting cylinder (1). A transmission shaft (15) is rotatably connected between each pair of mounting blocks (14). The top end of the transmission shaft (15) passes through the outer wall of the top of the collecting cylinder (1) and is fixedly connected to a gear (17). The gear (17) meshes with the toothed ring (13). The cleaning cylinder (6) is fixedly connected to the end of the transmission shaft (15) away from the gear (17), and the cleaning cylinder (6) is arranged parallel to the screening cylinder (5).

4. The pastry premix powder screening device according to claim 3, characterized in that; The mounting blocks (14) are provided in three pairs, and the three pairs of mounting blocks (14) are evenly distributed along the circumference of the collecting cylinder (1); each pair of mounting blocks (14) is provided with a corresponding cleaning cylinder (6), and the three cleaning cylinders (6) are evenly distributed along the circumference of the screening cylinder (5).

5. The pastry premix powder screening device according to claim 1, characterized in that; The discharge assembly (7) includes a scraper (18) fixedly connected to the bottom outer wall of the screening cylinder (5), the scraper (18) extending radially along the screening cylinder (5); the bottom of the inner wall of the collecting cylinder (1) is provided with an annular collecting groove (19) coaxially arranged with the screening cylinder (5), the bottom of the collecting groove (19) is connected to at least one discharge pipe (20), and the discharge pipe (20) penetrates the bottom outer wall of the collecting cylinder (1).

6. The pastry premix powder screening device according to claim 5, characterized in that; The bottom of the scraper (18) is arc-shaped, and the arc-shaped structure is perfectly matched with the inner wall shape of the collection trough (19), so that the scraper (18) can slide against the inner wall of the collection trough (19); the discharge pipe (20) is equipped with a valve that is manually or electrically controlled to control the opening and closing of the discharge pipe (20).

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