A rice crust conveying device

Abstract

The present application relates to the technical field of rice crust conveying, and discloses a rice crust conveying device, which comprises a base, a conveying table arranged on the base, a supporting mechanism and a pushing mechanism, wherein the conveying table is arranged obliquely; the pushing mechanism comprises two back plates arranged respectively on the two sides of the conveying table and parallel to the length direction of the conveying table, and a plurality of Z-shaped scraping plates are arranged on the side of each back plate close to the center of the conveying table, and the side of each Z-shaped scraping plate close to the center of the conveying table is arranged obliquely towards the side close to the ground. The work station separation plate with a guide opening is arranged in the middle of the obliquely arranged conveying table, and the Z-shaped scraping plates obliquely arranged towards the side close to the ground are arranged on the two back plates, so that the screening gap between the baffle and the work station separation plate is smaller than the shape size of the rice crust product, and thus in the process of step-by-step conveying, the rice crust product is conveyed upwards step by step, and the mixed-in broken slag continuously falls through the screening gap.

Description

Technical Field

[0001] This invention relates to the field of rice crust conveying technology, specifically a rice crust conveying device. Background Technology

[0002] Rice crust is made from rice. The process involves washing, soaking, steaming, and gelatinizing the rice to obtain cooked rice. The cooked rice is then pressed into rice cakes by rollers, cooled, and cut into raw rice crust blanks. These raw rice crust blanks are then fried or baked to dehydrate, puff, and crisp. The cooked rice crust undergoes processes such as oil removal, air cooling, and seasoning in rollers before being conveyed to the packaging station for packaging and storage. In existing rice crust production lines, the conveying stage after seasoning typically uses conventional conveying equipment such as belt conveyors or metal mesh conveyors. The continuous operation of the conveyor belt or metal mesh conveyor smoothly transports the finished rice crust to the next station. These conveyors have advantages such as simple structure, stable conveying, and large conveying capacity, and are widely used in the food processing conveying field.

[0003] However, after being deep-fried or baked, the internal structure of rice crust becomes quite brittle, with some areas exhibiting low bonding strength. During the degreasing, cooling, seasoning, and conveying processes, it is prone to breaking into pieces due to collisions, vibrations, or friction. The aforementioned belt conveyors or metal mesh conveyors can only transport the rice crust as a whole, failing to separate any broken pieces mixed in with the finished product. Furthermore, the surface structure of the conveyor belt or metal mesh belt cannot effectively block or collect the broken pieces, which easily fall from the conveyor belt edges or mesh gaps during transport. This results in fragments scattering throughout the production line, polluting the production environment, increasing cleaning and maintenance costs, and wasting rice crust material. Therefore, there is an urgent need for a rice crust conveying device that can effectively separate broken pieces from the finished rice crust during transport, thereby improving the production environment and reducing material waste. Summary of the Invention

[0004] The purpose of this invention is to provide a rice crust conveying device to solve the technical problem that rice crust fragments cannot be separated in a timely manner in the prior art.

[0005] A rice crust conveying device includes a base, a conveying platform disposed on the base, the conveying platform being inclined, and also includes a support mechanism and a pushing mechanism;

[0006] The support mechanism is mounted on the base and is used to adjust the orientation and tilt angle of the conveyor table;

[0007] The pushing mechanism includes two back plates respectively disposed on both sides of the conveyor table and parallel to the length direction of the conveyor table. Multiple parallel Z-shaped scrapers are evenly distributed on the side of the back plate near the center of the conveyor table. The Z-shaped scrapers are inclined towards the side near the ground on the side near the center of the conveyor table.

[0008] The conveyor table is provided with a station partition plate along its length in the middle, and multiple guide ports are evenly distributed in the middle of the station partition plate.

[0009] The bottom of the conveyor is provided with a reciprocating drive assembly that drives the two back plates to move synchronously in opposite directions.

[0010] When the back plate moves the Z-shaped scraper upward, the Z-shaped scraper moves from a position below the guide opening to a position above the guide opening, and the distance between the Z-shaped scraper and the workstation partition plate is less than the outer dimensions of the finished rice crust.

[0011] As a preferred embodiment of the present invention, the Z-shaped scraper includes a fixed base fixedly connected to the back plate, one end of the scraper is fixedly connected to the end of the fixed base, and a baffle is fixedly connected to the other end of the scraper. The baffle is arranged parallel to the workstation partition plate.

[0012] As a preferred embodiment of the present invention, the reciprocating drive assembly includes a tilting arm rotatably connected to the side of the conveyor table near the ground. Both ends of the tilting arm are rotatably connected to connecting rods. The end of the connecting rod away from the tilting arm is rotatably connected to a first hinge pin, which is fixedly connected to the end of the back plate near the ground.

[0013] As a preferred embodiment of the present invention, a motor frame is provided in the middle of the conveyor table, and a rotating disk is rotatably connected to the motor frame. A rotary drive motor for driving the rotating disk is provided inside the motor frame. A sliding rod is rotatably connected to the outer edge of the rotating disk. A guide slider is provided on the side of the sliding rod away from the rotating disk. A second hinge pin is provided on the side of the guide slider and rotatably connected to the tilting arm.

[0014] As a preferred embodiment of the present invention, the sliding rod is slidably connected to the guide slider, a fixing ring is provided in the middle of the sliding rod, a buffer spring is provided between the fixing ring and the guide slider, and limiting rods are provided on both sides of the flip arm to limit the maximum rotation angle of the flip arm, and the limiting rods are fixedly connected to the conveyor table.

[0015] As a preferred embodiment of the present invention, the support mechanism includes a rotary support ring disposed on the base, a cross bracket slidably connected to the rotary support ring, a support column disposed at one end of the cross bracket away from the center of the conveyor table, and the end of the support column rotatably connected to one end of the conveyor table away from the ground. A flipping drive assembly for adjusting the tilt angle of the conveyor table is disposed on the side of the cross bracket close to the center of the conveyor table, and a rotary drive assembly for driving the cross bracket to rotate around the center of the rotary support ring is disposed in the middle of the base.

[0016] As a preferred embodiment of the present invention, the rotary drive assembly includes a fixed rod fixedly connected to the center of the base, the fixed rod being coaxially arranged with the rotary support ring, the end of the fixed rod being rotatably connected to the middle of the cross bracket, a fixed gear being fixedly connected to the middle of the fixed rod, a mounting plate being fixedly connected to the side of the cross bracket, a rotary drive motor being arranged in the middle of the mounting plate, and a drive gear meshing with the fixed gear being fixedly connected to the output shaft of the rotary drive motor.

[0017] As a preferred embodiment of the present invention, the flipping drive assembly includes a guide column fixedly connected to the cross bracket on the side near the center of the conveyor table. Fixed plates are fixedly connected to both ends of the guide column. A lifting plate is slidably connected to the middle of the guide column. A lifting screw is rotatably connected to the middle of the fixed plate. The middle of the lifting screw is threadedly connected to the lifting plate. Lifting push rods are provided on both sides of the lifting plate and slidably connected to the fixed plate. A lifting roller is provided at the end of the lifting push rod away from the ground. The lifting roller rolls along the side of the conveyor table near the ground.

[0018] By adopting the above technical solution, the present invention has the following beneficial effects:

[0019] 1. Overcoming the shortcomings of the prior art, achieving integrated conveying and screening. The conveyor table is set at an angle, and a station partition plate with a guide port is set in the center of the conveyor table. In conjunction with the Z-shaped scraper plates set at an angle on both sides of the back plate, a screening gap smaller than the minimum external size of the finished rice crust is formed between the baffle and the station partition plate. During the step conveying process, the rice crust fragments continuously fall through the screening gap and collect at the lower end along the inclined table surface. Thus, the fragments are separated from the finished product while conveying, overcoming the shortcomings of existing belt conveyors or metal mesh belt conveyors that cannot separate fragments, and that fragments fall and contaminate the production line, causing material waste.

[0020] 2. Staggered relay conveying ensures thorough and continuous screening. Due to the staggered arrangement of Z-shaped scrapers on both sides and the alternating relay conveying via guide ports, the rice crust is consistently supported and lifted throughout the entire conveying path, ensuring continuous conveying without any gaps in the flow. Furthermore, each transfer of the rice crust across workstations completes one screening cycle, resulting in multiple screenings and thorough separation, thus improving screening efficiency while maintaining continuous conveying.

[0021] 3. Flexible pause transfer, minimal impact and thorough screening. Thanks to the crank-slider-rocker structure combined with a buffer spring and limit rod, when the tilting arm swings to its limit position and is blocked by the limit rod, the sliding rod continues to slide relative to the guide slider and compress the buffer spring. This creates a pause period for the Z-shaped scraper at the feed inlet, providing sufficient time for the cross-station transfer of rice crust and the screening of slag, ensuring complete transfer of rice crust and thorough separation of slag. Simultaneously, this structure transforms the limiting impact into the elastic compression of the buffer spring, reducing the instantaneous impact load on the transmission components, minimizing vibration and noise, and extending the service life of the transmission components.

[0022] 4. Dual-degree-of-freedom attitude adjustment, strong adaptability. Because the support mechanism integrates a rotary drive assembly and a tilting drive assembly, the rotary drive assembly drives the cross bracket to rotate horizontally through the meshing of a fixed gear and a drive gear. The tilting drive assembly drives the lifting rollers to rise and fall through a screw and nut transmission pair to adjust the tilt angle of the conveyor table. This enables stepless adjustment of both the orientation and tilt angle of the conveyor table, allowing the device to flexibly connect to equipment at different upstream and downstream workstations, improving the adaptability of workshop layout.

[0023] 5. Self-locking ensures stable posture and reliable operation. Because the lifting screw and lifting plate form a screw-nut transmission pair, they possess self-locking characteristics. Furthermore, the rotary drive motor uses a geared motor with a brake, automatically locking when stopped. This ensures that the tilt angle and orientation of the conveyor table remain stable during operation, preventing drift due to vibration or load changes, guaranteeing the stability of conveying and screening, and improving operational reliability.

[0024] 6. Modular design ensures good hygiene and low maintenance costs. The Z-shaped scraper is locked to the back plate via a fixing seat and fasteners. The debris collection box and dust cover are all detachable. A wear-resistant PTFE strip is inlaid at the bottom of the back plate, facilitating individual replacement and maintenance of vulnerable parts and reducing maintenance costs. Meanwhile, the conveyor table and scraper, which come into contact with materials, are made of food-grade stainless steel and polished. The guide port has a rounded transition surface, and the transmission parts are equipped with dust covers, meeting the hygiene requirements of food production and preventing oil and debris from contaminating the materials.

[0025] 7. Gentle rolling transfer ensures stable finished product quality. Because the scraper's surface is tilted towards the ground, the rice crust rolls smoothly along the scraper under its own weight. The transfer process is free from violent vibration and compression, effectively reducing secondary breakage of the rice crust. Simultaneously, the moderate rolling and collision during transfer causes loosely structured, substandard rice crust to break up prematurely and be removed, resulting in a more complete and stable finished product. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of a rice crust conveying device.

[0028] Figure 2 This is a front view of a rice crust conveying device.

[0029] Figure 3 This is a schematic diagram of the support mechanism in a rice crust conveying device.

[0030] Figure 4 This is a schematic diagram of the cross-shaped support structure in a rice crust conveying device.

[0031] Figure 5 This is a schematic diagram of the pushing mechanism in a rice crust conveying device.

[0032] Figure 6 for Figure 5 Top view.

[0033] Figure 7 This is a schematic diagram of the Z-shaped scraper in a rice crust conveying device.

[0034] Figure 8 This is a schematic diagram of the reciprocating drive component in a rice crust conveying device.

[0035] Figure 9 for Figure 8 A bottom view.

[0036] Figure 10 for Figure 8 The front view.

[0037] In the diagram: 1. Conveyor table; 2. Base; 3. Support mechanism; 4. Pushing mechanism; 5. Rotary support ring; 6. Cross bracket; 7. Rotary drive assembly; 8. Support column; 9. Fixing plate; 10. Guide column; 11. Lifting plate; 12. Lifting screw; 13. Lifting push rod; 14. Lifting roller; 15. Tilting drive assembly; 16. Fixed gear; 17. Fixing rod; 18. Drive gear; 19. Mounting plate; 20. Rotary drive motor; 1. Back plate; 22. Z-shaped scraper; 23. Station partition plate; 24. Guide port; 25. Reciprocating drive assembly; 26. Fixed base; 27. Scraper; 28. Baffle; 29. ​​Tilting arm; 30. Connecting rod; 31. First hinge pin; 32. Second hinge pin; 33. Guide slider; 34. Buffer spring; 35. Fixed ring; 36. Sliding rod; 37. Limiting rod; 38. Rotary disk; 39. Motor frame; 40. Rotary drive motor. Detailed Implementation

[0038] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0039] In one embodiment, see Figure 1 A rice crust conveying device includes a base 2, a conveyor platform 1, a support mechanism 3, and a pushing mechanism 4. The base 2 is placed on the workshop floor, serving as the supporting foundation for the entire device; optional leveling pads are provided at the bottom of the base 2 to adapt to uneven ground. The conveyor platform 1 is inclined above the base 2, and its surface is made of food-grade 304 stainless steel and polished, resulting in a smooth, wear-resistant surface that reduces the sliding resistance of crumbs and facilitates cleaning. The support mechanism 3 connects the base 2 and the conveyor platform 1, enabling stepless adjustment of the orientation and tilt angle of the conveyor platform 1. The pushing mechanism 4 is installed on the conveyor platform 1, enabling the step-by-step upward conveying of the rice crust and the simultaneous screening of crumbs.

[0040] In one instance of this embodiment, please refer to Figure 2 , Figure 5 , Figure 6 and Figure 7 The feeding mechanism 4 includes two back plates 21, multiple sets of Z-shaped scrapers 22, station partition plate 23, and reciprocating drive assembly 25.

[0041] Two back plates 21 are symmetrically arranged on the front and rear sides of the conveyor table 1 in the width direction, and are both parallel to the length direction of the conveyor table 1 (i.e., the inclination direction of the conveyor table 1). A small sliding gap is left between the bottom of the back plate 21 and the table surface of the conveyor table 1; the bottom of the back plate 21 may optionally be inlaid with a wear-resistant polytetrafluoroethylene strip to reduce sliding friction; the table surface of the conveyor table 1 may optionally be provided with a sliding groove that matches the bottom of the back plate 21, which is used to guide the back plate 21 to reciprocate along the length direction of the conveyor table 1, so that the back plate 21 can slide back and forth smoothly.

[0042] Each backplate 21 has multiple Z-shaped scraper plates 22 evenly fixed to its inner wall facing the center of the conveyor table 1 by bolts. The spacing between adjacent Z-shaped scraper plates 22 on the same side is equal and they are parallel to each other. The Z-shaped scraper plates 22 on the front and rear sides are arranged in an alternating manner to ensure that the rice crust can be transferred upwards step by step.

[0043] Each Z-shaped scraper 22 is integrally stamped from a fixed base 26, a scraper 27, and a baffle 28. The fixed base 26 is a vertical plate, which is locked to the back plate 21 with fasteners, making it easy to disassemble, assemble, maintain, and replace. The scraper 27 extends horizontally from the fixed base 26 toward the center of the conveyor table 1, and its surface is inclined towards the ground at an angle of 15° to 25°. This angle range ensures that the rice crust rolls smoothly under its own weight, while preventing it from colliding and breaking due to excessive rolling speed. The baffle 28 is vertically fixed to the inner end of the scraper 27 and is parallel to the surface of the workstation partition plate 23. The height of the baffle 28 is not less than the thickness of the finished rice crust, and it is used to block the rice crust and prevent it from falling from the inside of the scraper 27.

[0044] A screening gap is left between the inner end face of the baffle 28 and the side of the workstation partition plate 23. The width of the screening gap is set to be smaller than the minimum external dimensions of the conventional rice crust product, so that only small rice crust fragments are allowed to pass through, thereby realizing the dynamic screening function.

[0045] A workstation partition 23 is vertically fixed at the center of the conveyor table 1 along its length, dividing the table into two independent conveying stations. Multiple guide ports 24 are evenly distributed on the partition 23, the number of which corresponds to the number of Z-shaped scrapers 22 on each side, and their vertical positions are matched. The upper and lower edges of the guide ports 24 are rounded to prevent sharp edges from damaging the rice crust, thus reducing the breakage rate during conveying.

[0046] Optionally, the surface of the scraper 27 of the Z-shaped scraper 22 can be covered with a food-grade silicone pad to further cushion the impact of the rice crust and reduce the risk of breakage. Optionally, the lower end of the conveyor table 1 is equipped with a removable debris collection box, and the upper end is equipped with a finished product guide chute to facilitate docking with upstream and downstream materials. Optionally, the transmission parts of the reciprocating drive assembly 25 and the support mechanism 3 are equipped with dustproof covers to prevent oil and debris from entering the transmission parts, while meeting the hygiene requirements of food production.

[0047] In one instance of this embodiment, please refer to Figure 5 , Figure 8 , Figure 9 and Figure 10 The reciprocating drive assembly 25 is installed at the bottom of the conveyor table 1 and is used to drive the two back plates 21 to perform synchronous reciprocating motion. The reciprocating drive assembly 25 includes a tilting arm 29, a connecting rod 30, a first hinge pin 31, a second hinge pin 32, a guide slider 33, a buffer spring 34, a fixing ring 35, a sliding rod 36, a limiting rod 37, a rotating disk 38, a motor frame 39, and a rotary drive motor 40.

[0048] The center of the tilting arm 29 is rotatably connected to the center of the bottom of the conveyor table 1 via a pivot, allowing it to swing horizontally. Each end of the tilting arm 29 is hinged to a connecting rod 30, and the other ends of the two connecting rods 30 are fixedly connected to the bottom end of the corresponding side back plate 21 via first hinge pins 31. When the tilting arm 29 swings around its center, the pushing and pulling action of the two connecting rods 30 causes the front and rear back plates 21 to move synchronously in opposite directions along the length of the conveyor table 1. That is, when one back plate 21 moves towards the higher end of the conveyor table 1, the other back plate 21 moves synchronously towards the lower end of the conveyor table 1, thus ensuring precise coordination of the movement rhythms on both sides.

[0049] The motor frame 39 is fixedly installed at the center of the bottom of the conveyor table 1, and located on one side of the tilting arm 29. The rotating disk 38 is rotatably mounted on the bottom surface of the motor frame 39; the rotary drive motor 40 is fixedly installed inside the motor frame 39, with its output shaft facing downwards and fixedly connected to the center of the rotating disk 38, for driving the rotating disk 38 to rotate at a uniform speed. Optionally, the rotary drive motor 40 is a speed-regulating geared motor, which can adjust the speed according to production capacity requirements, thereby adjusting the conveying speed.

[0050] One end of the sliding rod 36 is hinged to the outer edge of the rotating disk 38, forming a crank structure together with the rotating disk 38. A guide slider 33 is slidably sleeved on the other end of the sliding rod 36. A second hinge pin 32 is fixedly provided on the side of the guide slider 33, and the second hinge pin 32 is rotatably connected to the arm of the tilting arm 29.

[0051] A fixing ring 35 is fixedly sleeved in the middle of the sliding rod 36, and a buffer spring 34 is sleeved on the sliding rod 36, with its two ends abutting between the fixing ring 35 and the end face of the guide slider 33, respectively. Two limiting rods 37 are also fixed at the bottom of the conveyor table 1. The two limiting rods 37 are respectively arranged on both sides of the swing path of the tilting arm 29 to limit the maximum swing angle of the tilting arm 29, ensuring that the stroke of the Z-shaped scraper 22 is accurately aligned with the guide port 24 and avoiding overtravel misalignment.

[0052] The aforementioned crank-slider-rocker structure, in conjunction with the buffer spring 34, enables the Z-shaped scraper 22 to exhibit a "movement-pause-reverse movement" stepping motion characteristic: when the rotating disk 38 drives the sliding rod 36 to push the tilting arm 29 to its limit position, the tilting arm 29 is stopped by the limiting rod 37 and stops swinging. At this time, the sliding rod 36 can continue to slide relative to the guide slider 33 and compress the buffer spring 34. During this stage, the Z-shaped scraper 22 remains stationary, forming a pause period, providing sufficient time for the transfer of rice crust and the screening of slag.

[0053] In one instance of this embodiment, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 The support mechanism 3 includes a rotary support ring 5, a cross bracket 6, a support column 8, a rotary drive assembly 7, and a tilting drive assembly 15.

[0054] The slewing support ring 5 is a circular guide rail structure, horizontally fixed to the center of the upper surface of the base 2 by bolts, and its ring surface is treated with wear-resistant hardening. The cross bracket 6 has a cross-shaped structure, and its bottom is provided with a sliding groove that matches the slewing support ring 5. A wear-resistant slider is embedded in the groove. The cross bracket 6 is engaged with the slewing support ring 5 through the sliding groove and can rotate smoothly horizontally around the central axis of the slewing support ring 5.

[0055] A support column 8 is vertically fixed on the upper surface of each of the two opposite outer ends of the cross bracket 6. The tops of the two support columns 8 are rotatably connected to the bottom of the high end of the conveyor table 1 through a hinge shaft, forming the pitch and swing fulcrum of the conveyor table 1, which is used to bear the main weight of the conveyor table 1.

[0056] The rotary drive assembly 7 is used to drive the cross bracket 6 to rotate horizontally, thereby adjusting the orientation of the conveyor table 1. The rotary drive assembly 7 includes a fixed rod 17, a fixed gear 16, a mounting plate 19, a rotary drive motor 20, and a drive gear 18. The fixed rod 17 is vertically fixed to the center of the upper surface of the base 2 and is coaxially arranged with the rotary support ring 5; the top end of the fixed rod 17 is rotatably connected to the center of the cross bracket 6 through a bearing, providing central support for the cross bracket 6 and improving its rotational stability. The fixed gear 16 is fixedly sleeved on the middle of the rod body of the fixed rod 17, with its tooth surface facing outward. The mounting plate 19 is fixedly connected to the side bracket of the cross bracket 6 and rotates together with the cross bracket 6. The rotary drive motor 20 is vertically fixed on the mounting plate 19, with its output shaft extending downward through the mounting plate 19, and the end is fixedly sleeved with the drive gear 18, which meshes with the fixed gear 16.

[0057] When the rotary drive motor 20 is running, it drives the drive gear 18 to rotate. Since the fixed gear 16 is stationary, the drive gear 18 will move in a circle along the tooth surface of the fixed gear 16, thereby driving the entire cross bracket 6 to rotate horizontally around the axis of the fixed rod 17, realizing 360° stepless adjustment of the orientation of the conveyor table 1. Optionally, the rotary drive motor 20 is a geared motor with a brake, which can automatically lock when stopped to maintain the stability of the orientation of the conveyor table 1 and prevent deflection during operation.

[0058] The tilt drive assembly 15 is used to adjust the tilt and pitch angle of the conveyor table 1. The tilt drive assembly 15 includes guide columns 10, fixed plates 9, lifting screws 12, lifting plates 11, lifting push rods 13, and lifting rollers 14. Two guide columns 10 are vertically fixed in parallel on the inner side of the cross bracket 6 and are located on both sides of the fixed rod 17; the upper and lower ends of the two guide columns 10 are fixedly connected to horizontal fixed plates 9. The lifting plate 11 is horizontally arranged, and its plate body is slidably sleeved on the two guide columns 10, and can slide smoothly up and down along the guide columns 10. The lifting screw 12 is vertically arranged, and its upper and lower ends are rotatably connected to the center of the upper and lower fixed plates 9 through bearings; the rod body of the lifting screw 12 passes through the center of the lifting plate 11 and is threadedly engaged with the lifting plate 11 to form a screw-nut transmission pair, which has high transmission accuracy and self-locking characteristics, and can remain locked at any angle.

[0059] Two lifting push rods 13 are symmetrically fixed on the front and rear sides of the lifting plate 11. The lifting push rods 13 extend upward through the upper fixed plate 9, and each of them is equipped with a freely rotatable lifting roller 14. The wheel surface of the lifting roller 14 abuts against the bottom surface of the lower end of the conveyor table 1 and can roll along the bottom surface of the conveyor table 1, converting sliding friction into rolling friction, reducing adjustment resistance and wear.

[0060] When the lifting screw 12 is rotated, the lifting plate 11 moves up and down along the guide column 10 via threaded transmission, which in turn drives the lifting push rod 13 and the lifting roller 14 to rise and fall synchronously. When the lifting roller 14 rises upward, it pushes the lower end of the conveyor table 1 to rise, causing the conveyor table 1 to swing around the hinge point at the top of the support column 8, reducing the tilt angle. When the lifting roller 14 falls downward, the lower end of the conveyor table 1 descends under its own weight, increasing the tilt angle. By controlling the number of rotations of the lifting screw 12, the tilt angle of the conveyor table 1 can be precisely adjusted. Optionally, the tilt angle adjustment range of the conveyor table 1 is 10°~35° to adapt to different conveying speeds and screening requirements. Optionally, the lifting screw 12 can be equipped with a handwheel or a geared motor drive for convenient operation.

[0061] The working process of this device is divided into two stages: attitude adjustment and conveying and screening, as detailed below.

[0062] Phase 1: Posture Adjustment

[0063] During equipment installation or production line layout adjustment, the docking posture of the conveyor table 1 is adjusted by the support mechanism 3.

[0064] Step S1: Orientation Adjustment. Start the rotary drive motor 20, which drives the drive gear 18 to rotate. Since the fixed gear 16 remains stationary, the drive gear 18 revolves around the outer circumference of the fixed gear 16, causing the cross bracket 6 to rotate horizontally along the rotary support ring 5, thereby causing the conveyor table 1 to rotate synchronously. Observe the positions of the feed end and discharge end of the conveyor table 1. After the orientation of the conveyor table 1 is aligned with the upstream and downstream equipment, stop the rotary drive motor 20. The motor's built-in brake locks the cross bracket 6, keeping the orientation of the conveyor table 1 fixed.

[0065] Step S2: Inclination Angle Adjustment. Rotate the lifting screw 12. The lifting screw 12 drives the lifting plate 11 to move up and down along the guide column 10 via the threaded transmission. The lifting plate 11 drives the lifting roller 14 to rise and fall via the lifting push rod 13. The lifting roller 14 pushes against the bottom surface of the conveyor table 1, pushing the conveyor table 1 to swing around the hinge point at the top of the support column 8, thereby adjusting the inclination angle of the conveyor table 1. After adjusting to the required angle, the self-locking characteristic of the screw and nut transmission pair locks the conveyor table 1 at that angle. The larger the inclination angle, the faster the rice crust rolls and the higher the conveying efficiency, but the screening time is correspondingly shortened; the smaller the inclination angle, the more thorough the screening, but the conveying speed is correspondingly reduced. Therefore, the inclination angle can be adjusted to the optimal value according to the rice crust specifications and production capacity requirements.

[0066] Phase Two: Conveying and Screening

[0067] After the attitude adjustment is completed, start the rotary drive motor 40, and the device enters the continuous conveying and screening state. Its working cycle is as follows.

[0068] Step S3: Initial feeding. This is illustrated using the example where the front Z-shaped scraper 22 is at a low position and the rear Z-shaped scraper 22 is at a high position. The seasoned rice crust product falls evenly from the feed inlet at the bottom of the conveyor table 1 onto the lowest front Z-shaped scraper 22. Because the scraper 27 is inclined towards the center of the conveyor table 1 and closer to the ground, the rice crust rolls inward under its own weight to the baffle 28, where it is blocked by the workstation partition 23 and remains on the scraper 27.

[0069] Step S4: Upward Lifting. The rotary drive motor 40 drives the rotating disk 38 to rotate at a constant speed. The rotating disk 38 pushes the tilting arm 29 to swing through the sliding rod 36. The tilting arm 29 then drives the front back plate 21 to move towards the high end of the conveyor table 1 through the connecting rod 30. At the same time, the rear back plate 21 moves towards the low end of the conveyor table 1. The Z-shaped scraper 22 on the front side lifts the rice crust upward along the inclined table surface. When the Z-shaped scraper 22 moves to the position opposite to the corresponding guide port 24, the tilting arm 29 swings to the extreme position on one side and is blocked by the limiting rod 37. The Z-shaped scraper 22 enters a resting state. At this time, the inner end of the scraper 27 is opposite to the guide port 24.

[0070] Step S5: Cross-station transfer and screening. During the pause period, the inner side of the scraper 27 of the front Z-shaped scraper 22 is aligned with the guide port 24. With the inner side of the scraper 27 no longer obstructed by the station partition plate 23, the rice crust rolls inward along the inclined scraper 27 under its own weight, passing through the guide port 24 and transferring to the corresponding rear Z-shaped scraper 22. At this time, the rear Z-shaped scraper 22 is in a low position and can receive the transferred rice crust. The rice crust rolls to the baffle 28 of the rear scraper 27 and is blocked and stopped. During this transfer process, the size of the debris mixed in with the rice crust is smaller than the screening gap between the baffle 28 and the station partition plate 23. The debris continuously falls from this screening gap onto the platform of the conveyor table 1 and slides down the inclined platform, eventually collecting at the debris collection port at the lower end of the conveyor table 1, achieving separation of debris from the finished product.

[0071] Step S6: Reverse Alternating Conveying. The rotary table 38 continues to rotate, causing the tilting arm 29 to swing in the opposite direction. The rear back plate 21 begins to move towards the high end of the conveyor table 1, lifting the rice crust upwards. Simultaneously, the front back plate 21 falls back towards the low end of the conveyor table 1. When the rear Z-shaped scraper 22 reaches the next guide port 24, it enters a pause state again, and the rice crust passes through the guide port 24 and is transferred back to the front Z-shaped scraper 22. It should be noted that during the movement of the Z-shaped scraper 22, because the scraper 27 passes through the guide port 24 at a relatively high speed, only a small amount of rice crust is transferred when it crosses the empty guide port 24; the large-scale cross-station transfer of rice crust mainly occurs during the pause period. As the conveying cycle continues, the rice crust continuously moves towards the high end of the conveyor table 1.

[0072] Step S7: Continuous step output. This cycle repeats, with the Z-shaped scrapers 22 on both sides alternately lifting the rice crust through the guide port 24, transferring it alternately between the two conveying stations, moving step by step towards the high end of the conveyor table 1, and finally outputting it from the discharge port at the high end of the conveyor table 1 to enter the next packaging process.

[0073] Throughout the conveying process, each transfer of the rice crust completes a screening of broken pieces. Simultaneously, the moderate rolling and collision during transfer causes loosely structured, substandard rice crust to break up and be removed prematurely, resulting in a higher degree of integrity in the final output. The broken pieces continuously slide down the inclined platform and are collected and recycled, avoiding both material waste and environmental pollution from scattered debris.

[0074] This invention provides a rice crust conveying device. By setting a station partition plate 23 with a guide port 24 in the middle of the inclined conveying platform 1, and setting Z-shaped scraper plates 22 inclined towards the ground on the back plates 21 on both sides, a screening gap smaller than the outer size of the finished rice crust is formed between the baffle 28 and the station partition plate 23. Thus, during the step conveying process, the finished rice crust is conveyed upward step by step, while the broken pieces mixed in continuously fall through the screening gap and collect at the lower end along the inclined platform. This achieves simultaneous conveying and screening, overcoming the defects of existing conveying devices that cannot separate broken pieces, and that broken pieces fall and contaminate the production line, causing material waste. This improves the production environment and reduces material waste.

[0075] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

Claims

1. A rice crust conveying device, comprising a base, wherein a conveying platform is disposed on the base, characterized in that, The conveyor table is inclined and also includes a support mechanism and a pushing mechanism; The support mechanism is mounted on the base and is used to adjust the orientation and tilt angle of the conveyor table; The pushing mechanism includes two back plates respectively disposed on both sides of the conveyor table and parallel to the length direction of the conveyor table. Multiple parallel Z-shaped scrapers are evenly distributed on the side of the back plate near the center of the conveyor table. The Z-shaped scrapers are inclined towards the ground side on the side near the center of the conveyor table. A station partition plate is disposed in the middle of the conveyor table along the length direction. Multiple guide ports are evenly distributed in the middle of the station partition plate. A reciprocating drive assembly is disposed at the bottom of the conveyor table to drive the two back plates to move synchronously in opposite directions. When the back plate moves the Z-shaped scraper upward, the Z-shaped scraper moves from a position below the guide opening to a position above the guide opening, and the distance between the Z-shaped scraper and the workstation partition plate is less than the outer dimensions of the finished rice crust.

2. The rice crust conveying device according to claim 1, characterized in that, The Z-shaped scraper includes a fixed base fixedly connected to the back plate. One end of the scraper is fixedly connected to the end of the fixed base, and a baffle is fixedly connected to the other end of the scraper. The baffle is arranged parallel to the workstation partition plate.

3. The rice crust conveying device according to claim 1, characterized in that, The reciprocating drive assembly includes a tilting arm rotatably connected to the side of the conveyor table near the ground. Both ends of the tilting arm are rotatably connected to connecting rods. The end of the connecting rod away from the tilting arm is rotatably connected to a first hinge pin, which is fixedly connected to the end of the back plate near the ground.

4. The rice crust conveying device according to claim 3, characterized in that, A motor frame is provided in the middle of the conveyor table, and a rotating disk is rotatably connected to the motor frame. A rotary drive motor for driving the rotating disk is provided inside the motor frame. A sliding rod is rotatably connected to the outer edge of the rotating disk. A guide slider is provided on the side of the sliding rod away from the rotating disk. A second hinge pin is provided on the side of the guide slider and rotatably connected to the tilting arm.

5. A rice crust conveying device according to claim 4, characterized in that, The sliding rod is slidably connected to the guide slider. A fixing ring is provided in the middle of the sliding rod. A buffer spring is provided between the fixing ring and the guide slider. Limiting rods that limit the maximum rotation angle of the flipping arm are provided on both sides of the flipping arm. The limiting rods are fixedly connected to the conveyor table.

6. The rice crust conveying device according to claim 1, characterized in that, The support mechanism includes a rotary support ring disposed on the base, a cross bracket slidably connected to the rotary support ring, a support column disposed at one end of the cross bracket away from the center of the conveyor table, and the end of the support column rotatably connected to the end of the conveyor table away from the ground. A flip drive assembly for adjusting the tilt angle of the conveyor table is disposed on the side of the cross bracket close to the center of the conveyor table, and a rotary drive assembly for driving the cross bracket to rotate around the center of the rotary support ring is disposed in the middle of the base.

7. A rice crust conveying device according to claim 6, characterized in that, The rotary drive assembly includes a fixed rod fixedly connected to the center of the base. The fixed rod is coaxially arranged with the rotary support ring. The end of the fixed rod is rotatably connected to the middle of the cross bracket. A fixed gear is fixedly connected to the middle of the fixed rod. A mounting plate is fixedly connected to the side of the cross bracket. A rotary drive motor is arranged in the middle of the mounting plate. A drive gear that meshes with the fixed gear is fixedly connected to the output shaft of the rotary drive motor.

8. A rice crust conveying device according to claim 6, characterized in that, The flipping drive assembly includes a guide column fixedly connected to the cross bracket on the side near the center of the conveyor table. Fixed plates are fixedly connected to both ends of the guide column. A lifting plate is slidably connected to the middle of the guide column. A lifting screw is rotatably connected to the middle of the fixed plate. The middle of the lifting screw is threadedly connected to the lifting plate. Lifting push rods are provided on both sides of the lifting plate and slidably connected to the fixed plate. A lifting roller is provided at the end of the lifting push rod away from the ground. The lifting roller rolls along the side of the conveyor table near the ground.

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