Elevator for rice processing

Abstract

The invention belongs to the technical field of conveying machinery, and particularly relates to an elevator for rice processing. Comprising a hopper used for conveying rice, and an open groove is formed in the bottom of the hopper; the pressure relief assembly is arranged in the open groove; the wavy flexible plate is arranged at the bottom of the hopper, the flexible material of the wavy flexible plate and the W-shaped section design are used for providing effective buffering for rice entering a rice pile at a high speed, rigid collision between rice grains and the bottom of the hard hopper is avoided, and the rice breaking rate is remarkably reduced; by means of the structure, extruded air in the hopper can instantly escape at a high speed, the fullness rate of the hopper is increased, attached fine dust can be taken away through the scouring effect generated by air flow in the variable cross-section flow channel, and primary gas-solid separation is achieved.

Description

Technical Field

[0001] This invention belongs to the field of conveying machinery technology, specifically a hoist for rice processing. Background Technology

[0002] Rice (including paddy rice, brown rice, and polished rice) is a major food crop in my country. In rice processing production lines, bucket elevators are key equipment for vertical material conveying. Their core working components are several buckets fixed on a traction belt or chain. The buckets of rice elevators commonly used in the market are usually made of metal (such as carbon steel or stainless steel) by stamping or engineering plastic by injection molding. The structure is mostly an integrated deep bucket-shaped container.

[0003] In existing technologies, the bottom of the hopper is usually a closed solid structure. When the hopper cuts into the rice pile at high speed, the air inside the hopper cannot be expelled instantly, forming an "air cushion" or "air pressure backflow" at the bottom of the hopper. This "piston effect" not only hinders rice from entering the bottom of the hopper, resulting in a decrease in the hopper's fullness and reducing conveying efficiency, but also causes damp or oily rice bran to easily adhere to the bottom of the hopper and fail to be ejected due to the vacuum negative pressure at the discharge end, resulting in material backflow. Rice is a heat-sensitive and fragile granular material, especially dried paddy rice or milled rice, which has weak impact resistance. Although some existing technologies attempt to solve the ventilation problem by opening circular through holes at the bottom of the hopper, circular holes have two drawbacks: first, if the hole diameter is too large, rice will easily leak out, and if the hole diameter is too small, it will easily be blocked by fine dust such as rice bran and rice husk ash, losing its ventilation function; second, ordinary openings cannot achieve airflow separation, making it difficult to use the air force during the lifting process to remove rice bran, resulting in a still high impurity content in the lifted rice. Summary of the Invention

[0004] To address the shortcomings of existing technologies and solve the problem of air inside the hopper not being able to be expelled instantly, which not only hinders rice from entering the bottom of the hopper, leading to a decrease in the hopper's fullness and reduced conveying efficiency, but also causes damp or oily rice bran to easily adhere to the bottom of the hopper and become unable to be ejected due to the vacuum negative pressure at the discharge end, resulting in material return, this invention proposes a rice processing elevator.

[0005] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a rice processing elevator, comprising a frame, a drive assembly and a traction assembly mounted on the frame, and components mounted on the traction assembly. A hopper for conveying rice, wherein the bottom of the hopper is provided with a slot; A pressure relief assembly is disposed inside a slot. The pressure relief assembly includes a bottom plate that slides within the slot. A sliding groove is provided on the top of the bottom plate. A sliding plate slides inside the sliding groove. A tapered hole is provided at equal intervals on the sliding plate to increase the pressure when air passes through. A corrugated flexible plate is provided on the top of the bottom plate. Through holes are provided at equal intervals on the corrugated flexible plate to discharge air from the hopper when loading rice. Multiple horn holes are provided at equal intervals on the bottom plate to discharge dust and debris from the hopper. The self-tightening assembly is located inside the hopper and the pressure relief assembly. The self-tightening assembly includes trapezoidal blocks symmetrically fixed in the slot. The bottom plate is symmetrically provided with barbed blocks on both sides, which are used to fix the bottom plate when the hopper throws material.

[0006] Preferably, the corrugated flexible plate is provided with conical holes two at equal intervals, and the number of conical holes one, through holes, conical holes two and horn holes are the same, and the conical holes one, through holes, conical holes two and horn holes are aligned with each other in the vertical direction.

[0007] Preferably, the bottom of the base plate is fixedly connected with multiple fixing rods at equal intervals. The number of fixing rods is the same as the number of horn holes in the horizontal direction. Multiple springs are fixedly connected at equal intervals on each fixing rod. The number of springs on each fixing rod is the same as the number of horn holes in the vertical direction. Each spring is inserted into the horn hole.

[0008] Preferably, two graphene patches are symmetrically fixedly connected in each of the horn holes, the traction component is made of conductive material, the frame is grounded, and the graphene patches are electrically connected to the frame via the base plate, hopper and traction component.

[0009] Preferably, two dovetail blocks are symmetrically fixedly connected to the top of the base plate, and dovetail grooves are provided on both sides of the corrugated flexible plate.

[0010] Preferably, a fixed cylinder is fixedly connected to the bottom of the base plate, a lead screw is rotatably connected inside the fixed cylinder, a lead screw nut slider is threadedly connected to the surface of the lead screw, an adjusting bolt is fixedly connected to one end of the lead screw nut slider, an adjusting groove is opened in the interior of the base plate and the fixed cylinder, an adjusting plate is slidably connected inside the adjusting groove, the bottom of the adjusting plate is fixedly connected to the lead screw nut slider, and the top of the adjusting plate is fixedly connected to the sliding plate.

[0011] Preferably, the two sides of the base plate are inclined surfaces, and the two sides of the base plate are slidably connected to the trapezoidal block.

[0012] Preferably, the bottoms of both trapezoidal blocks are sloped, the tops of both barbed blocks are sloped, and the bottoms of the trapezoidal blocks and the tops of the barbed blocks have the same inclination angle.

[0013] Preferably, the base plate has movable grooves on both sides, and two sliding plates are slidably connected inside the two movable grooves. The two sliding plates are fixedly connected to the barb blocks, and nine springs are fixedly connected at equal intervals inside the two movable grooves.

[0014] Preferably, the hopper has insertion holes on both sides.

[0015] The beneficial effects of this invention are as follows: 1. The rice processing elevator of the present invention features a corrugated flexible plate at the bottom of the hopper. The flexible material and W-shaped cross-section design of the plate provide a buffer for the rice that is cutting into the rice pile at high speed, avoiding rigid collisions between the rice grains and the hard bottom of the hopper. This helps to reduce the broken rice rate. Combined with a variable cross-section flow channel consisting of conical holes, through holes, and horn holes, the compressed air in the hopper can escape at high speed, completely eliminating the "air cushion resistance" and air pressure backlash during feeding. This effectively suppresses airflow turbulence and increases the hopper's fullness. Utilizing the Venturi effect of fluid dynamics, the scouring effect generated by the airflow in the variable cross-section flow channel can carry away the attached fine dust, achieving preliminary gas-solid separation. Furthermore, the effective diameter of the flow channel can be changed by adjusting the position of the sliding plate, flexibly adapting to the processing needs of rice with different particle sizes.

[0016] 2. The rice processing elevator of the present invention utilizes a cantilevered high-elasticity spring to force the spring to generate high-frequency reciprocating vibrations by taking advantage of the inherent vibrations during the operation of the elevator and the disturbances caused by the airflow. This actively knocks on the hole walls and accumulated materials. In conjunction with the graphene patches installed inside the holes, the static electricity generated by the friction of rice bran can be conducted away in real time, eliminating the effect of electrostatic adsorption. This effectively solves the problem of the ventilation holes being blocked by dust adhesion and electrostatic adsorption, ensuring long-term stable operation of the equipment without the need for frequent shutdowns for cleaning.

[0017] 3. The rice processing elevator of the present invention replaces the traditional bolt connection with a self-tightening assembly composed of trapezoidal blocks, barbed blocks and springs. When the equipment is running, the centrifugal force and the gravity of the material on the hopper are used to convert the load into a normal clamping force on the trapezoidal block through the self-locking tilt angle at the top of the barbed block, forming a dynamic self-locking. The faster the equipment speed and the greater the load, the tighter the connection, effectively eliminating loosening and abnormal noise caused by long-term vibration. Attached Figure Description

[0018] The invention will now be further described with reference to the accompanying drawings.

[0019] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the hopper structure installation position of the present invention; Figure 3This is a three-dimensional schematic diagram of the base plate and the corrugated flexible plate structure of the present invention; Figure 4 This is a three-dimensional schematic diagram of the structure of the sliding plate and the conical hole of the present invention; Figure 5 This is a schematic cross-sectional view of the base plate and the corrugated flexible plate of the present invention; Figure 6 This is a cross-sectional view of the connection structure between the base plate and the corrugated flexible plate of the present invention; Figure 7 This is a schematic diagram of the use of the conical hole and the flared hole mating structure of the present invention; Figure 8 This is a schematic diagram of the horn hole and fixing rod structure of the present invention; Figure 9 This is a schematic diagram of the sliding plate and the adjusting plate structure of the present invention in use; Figure 10 This is a cross-sectional view of the internal structure of the movable groove of the present invention.

[0020] In the picture: 100. Hopper; 110. Groove; 111. Insertion hole; 200. Pressure relief assembly; 210. Base plate; 211. Dovetail block; 220. Sliding groove; 230. Sliding plate one; 231. Conical hole one; 240. Corrugated flexible plate; 241. Dovetail groove; 242. Through hole; 243. Conical hole two; 250. Horn hole; 251. Graphene patch; 260. Fixing rod; 261. Spring; 270. Fixing cylinder; 271. Lead screw; 272. Lead screw nut slider; 273. Adjusting bolt; 280. Adjusting groove; 281. Adjusting plate; 300. Self-tightening assembly; 310. Trapezoidal block; 320. Movable groove; 321. Sliding plate II; 322. Spring; 330. Hook block. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] like Figure 1 and Figure 2As shown, this embodiment discloses a rice processing elevator, which mainly consists of a frame, a drive device, a traction component (such as a lifting belt or chain), and several buckets 100 mounted on the traction component. The structure and connection method of the frame, drive device, and traction component all adopt conventional existing technologies in the art (e.g., the drive device is mounted at the head of the frame, driving the traction component to circulate within the frame). The innovative improvement of this embodiment mainly lies in the specific structure of the buckets 100 and their performance optimization when working in conjunction with the traction component. Specifically, the elevator includes buckets 100, a pressure relief component 200, and a self-tightening component 300; the back of the buckets 100 is fixed to the aforementioned traction component by conventional fasteners (such as bolts) and moves synchronously with the traction component; the pressure relief component 200 is disposed inside the slot 110, and the self-tightening component 300 is disposed inside the buckets 100 and the pressure relief component 200.

[0023] Furthermore, when the existing elevator bucket cuts into the rice pile at high speed, the air inside the elevator bucket cannot be expelled instantly. The "piston effect" hinders the rice from entering the bottom of the elevator bucket, resulting in a decrease in the bucket's fullness. Due to the vacuum negative pressure formed at the bottom, damp or oily rice bran will adhere to the bottom of the elevator bucket and cannot be ejected, causing material to be returned. When the elevator bucket digs out materials at a high speed, the rice grains at the bottom collide violently with the bottom of the rigid elevator bucket, which is very easy to cause breakage, resulting in a significant increase in the broken rice rate in the finished rice.

[0024] During operation, when the traction component drives the hopper 100 into the rice pile, the rice first contacts the corrugated flexible plate 240. Thanks to the flexible material and unique W-shaped cross-section design of the corrugated flexible plate 240, the rice is effectively cushioned, preventing direct impact on the hard bottom of the hopper 100, thus significantly reducing the broken rice rate. As the rice rapidly fills, the air accumulated inside the hopper 100 is compressed and forced to the bottom, then flows outwards through the through hole 242, conical hole 243, conical hole 231, and horn hole 250 along a pre-set flow channel. This process utilizes an outward-facing micropore array to simulate a "fish gill" drainage mechanism, allowing high-pressure air to escape instantaneously at high speed, completely eliminating... The "air cushion resistance" at the bottom of the hopper 100 effectively suppresses airflow turbulence during feeding, further reducing the impact on rice grains. When the airflow passes through the variable cross-section flow channel (i.e., narrow-to-wide structure) formed by the above-mentioned holes, the airflow scouring effect on the hole wall is generated by the principle of fluid dynamics (such as the Venturi effect), which can effectively remove the attached fine dust, prevent the flow channel from being blocked, and ensure the long-term efficient operation of the elevator. The operator can adjust the position of the sliding plate 230 in the sliding groove 220 to change the degree of overlap and misalignment between the conical hole 231 and the trumpet hole 250, thereby flexibly adjusting the effective diameter of the air flow channel to adapt to the processing needs of rice with different particle sizes and prevent material leakage.

[0025] like Figure 1 and Figure 6 As shown, the bottom of the hopper 100 is provided with a slot 110, which extends through the bottom of the hopper 100, so that the bottom of the hopper 100 forms a rectangular frame structure with a hollow center through the slot 110.

[0026] like Figure 3 and Figure 4 As shown, the pressure relief assembly 200 includes a base plate 210 slidably connected within the slot 110. The base plate 210 is made of a high-strength rigid material to support the upper assembly. A sliding groove 220 is provided on the top of the base plate 210. A sliding plate 230 is slidably connected inside the sliding groove 220. The sliding plate 230 and the sliding groove 220 fit tightly together, and their contact surfaces are coated with a wear-resistant coating. This ensures smooth sliding and prevents fine dust from entering the gaps and causing jamming. Figure 4 and Figure 7 As shown, the sliding plate 230 has conical holes 231 evenly spaced on it, which gradually narrow from top to bottom. A corrugated flexible plate 240 is provided on the top of the bottom plate 210 and above the sliding groove 220. The corrugated flexible plate 240 is made of wear-resistant and anti-aging silicone rubber. Its corrugated structure gives it compressible and stretchable deformation capabilities. Through holes 242 are evenly spaced on the corrugated flexible plate 240. The corrugated shape guides the air to converge. The through holes 242 can discharge the air that is pressed into the bottom of the hopper 100 when it is loaded with rice. Multiple horn holes 250 are evenly spaced on the bottom plate 210, which gradually widen from top to bottom. The bottom end of the corrugated flexible plate 240 is in close contact with the top surface of the sliding plate 230.

[0027] like Figure 5 and Figure 7 As shown, the corrugated flexible plate 240 has conical holes 243 spaced apart. The conical holes 243 are located below the through holes 242 and are connected to the through holes 242. The number of conical holes 231, through holes 242, conical holes 243 and horn holes 250 are the same. The conical holes 231, through holes 242, conical holes 243 and horn holes 250 are aligned with each other in the vertical direction to form an airflow channel that is narrow at first and then widens. The change in the cross-section of this channel (contraction-straightening-expansion) can effectively establish a pressure gradient, so that the air accumulated at the bottom can overcome the resistance and be discharged quickly. At the same time, the airflow carries away the light rice bran and dust, achieving the initial effect of "gas-solid separation".

[0028] like Figure 7 and Figure 8As shown, multiple fixing rods 260 are equidistantly fixed to the bottom of the base plate 210. The fixing rods 260 are rigidly fixed by welding, serving as the base for vibration transmission. The number of fixing rods 260 is the same as the number of horn holes 250 in the transverse direction. Multiple spring plates 261 are equidistantly fixed to each fixing rod 260. The spring plates 261 are made of 304 or 316L spring steel, possessing excellent fatigue resistance. The number of spring plates 261 on each fixing rod 260 is the same as the number of horn holes 250 in the longitudinal direction. The free end of the reed 261 extends to the upper middle part of the horn hole 250 without directly contacting the hole wall, maintaining a cantilever state. The inherent vibration generated during the operation of the elevator, combined with the disturbance caused by airflow through the horn hole 250, forces the reed 261 to vibrate at high frequency, causing it to oscillate back and forth, striking the inner wall of the horn hole 250 and any rice bran attempting to accumulate, thus preventing dust adhesion. Two graphene patches 251 are symmetrically fixedly connected inside each horn hole 250. The graphene patch 251 is attached to the inner side of the hole wall with conductive adhesive. To cooperate with the electrostatic elimination function of the graphene patch 251, the traction component in this embodiment adopts an antistatic conductive rubber belt (or a conveyor belt with embedded metal wires), and the base plate 210 is made of metal. The graphene patch 251 is tightly attached to the surface of the base plate 210 to achieve electrical conduction. The static charge generated by the friction of rice bran is first captured by the graphene patch 251 and conducted to the metal base plate 210. Then, it is conducted to the hopper body through the contact surface between the self-tightening component and the metal hopper 100. The hopper 100 is fixed to the conductive traction component by metal fastening bolts. The static charge then enters the traction component. When the traction component passes the metal drive roller on the frame, the charge is conducted to the drive roller and finally conducted to the ground through the grounding terminal of the frame. This complete conductive circuit ensures that static electricity cannot accumulate inside the hopper and can conduct away the static electricity generated by the friction of rice bran when passing through the horn hole 250 in real time, thereby eliminating the electrostatic adsorption effect and preventing fine dust from adhering and clogging the micropores.

[0029] like Figure 3 and Figure 4 As shown, two dovetail blocks 211 are symmetrically fixedly connected to the top of the base plate 210. Dovetail grooves 241 are provided on both sides of the corrugated flexible plate 240. The dovetail blocks 211 and the dovetail grooves 241 cooperate with each other. The operator inserts the corrugated flexible plate 240 between the two dovetail blocks 211. With the cooperation of the dovetail blocks 211 and the dovetail grooves 241, the corrugated flexible plate 240 is fixed on the base plate 210, ensuring that the corrugated flexible plate 240 will not loosen during the high-speed movement of the hoist. When replacing the corrugated flexible plate 240, simply insert a tool into the dovetail grooves 241 to pry it off, and the corrugated flexible plate 240 can be quickly removed from the base plate 210 and replaced.

[0030] like Figure 1 and Figure 9As shown, a fixed cylinder 270 is fixedly connected to the bottom of the base plate 210. A lead screw 271 is rotatably connected inside the fixed cylinder 270. A nut slider 272 is threadedly connected to the surface of the lead screw 271. The lead screw 271 and the nut slider 272 are fitted with trapezoidal threads to provide a certain self-locking capability. An adjusting bolt 273 is fixedly connected to one end of the lead screw 271. An adjusting groove 280 is jointly provided inside the base plate 210 and the fixed cylinder 270. An adjusting plate 281 is slidably connected inside the adjusting groove 280. The bottom of the adjusting plate 281 is fixedly connected to the nut slider 272, and the top of the adjusting plate 281 is fixedly connected to the nut slider 272. The sliding plate 230 is fixedly connected. The operator uses a tool to rotate the adjusting bolt 273, which drives the lead screw 271 to rotate. Under the action of the threaded connection, the lead screw nut slider 272 slides inside the fixed cylinder 270, thereby driving the adjusting plate 281 to slide. In turn, the sliding plate 230 slides inside the sliding groove 220, changing the position of the conical hole 231 relative to the trumpet hole 250. Through this misalignment adjustment, the effective flow cross-sectional area of ​​the flow channel can be precisely controlled, thereby adjusting the exhaust speed and dust discharge according to the moisture content or particle size of different rice, realizing "one machine for multiple uses".

[0031] Furthermore, the traditional connection between the detachable base plate and the hopper uses bolt fastening or ordinary rigid clips. Bolt connections are difficult to operate in the confined space of the barrel and are prone to corrosion in humid or dusty environments, resulting in time-consuming disassembly and maintenance. Although ordinary rigid clips are quick to install, disassembly often requires special tools. Existing elevators operate at high speeds, and the hopper experiences a complex working condition with alternating downward gravity during loading and outward centrifugal force during throwing. Existing connection structures are mostly statically locked and cannot adapt to this alternating load. Under long-term severe vibration, the gap between the connecting parts will gradually increase, causing the base plate 210 to loosen or even fall off.

[0032] During use, the worker presses the base plate 210 into the outer casing, causing the hook block 330 to first contact the trapezoidal block 310. Under the pressure of the trapezoidal block 310, the hook block 330 pushes the sliding plate 321 into the movable groove 320, compressing the spring 322. When the hook block 330 passes the trapezoidal block 310, it springs back instantly under the action of the spring 322, producing a "click" sound. At this point, the base plate 210 is installed at the bottom of the hopper 100. The inclined surface of the trapezoidal block 310 limits the base plate 210, preventing it from falling downwards from the hopper 110. The combination of the side of the base plate 210 and the wedge-shaped slider structure of the trapezoidal block 310 further contributes to the movement of the material in the hopper 110. After rice is loaded into the hopper 100, the inner liner moves downward under pressure, and the bottom plate 210 slides into the depth of the slot 110 along the slope of the trapezoidal block 310. The gap is eliminated, making the connection between the bottom plate 210 and the trapezoidal block 310 tighter. The top of the hook block 330 is provided with a self-locking tilt angle. When the elevator throws out the rice in the hopper 100, the bottom plate 210 is subjected to a force in the direction of throwing out the hopper 100. The self-locking tilt angle of the hook block 330 converts part of the load into a normal pressing force on the contact surface with the trapezoidal block 310. This causes the static friction between the hook block 330 and the trapezoidal block 310 to increase linearly with the increase of the load, forming a dynamic self-locking mechanism. This not only prevents the connection from loosening, but also effectively eliminates vibration and abnormal noise caused by manufacturing tolerances.

[0033] like Figure 6 As shown, the self-tightening assembly 300 includes trapezoidal blocks 310 symmetrically fixed in the slot 110. Hook blocks 330 are symmetrically arranged on both sides of the base plate 210. The two sides of the base plate 210 are inclined surfaces. The two sides of the base plate 210 are slidably connected to the trapezoidal blocks 310, and the angles of the inclined surfaces on both sides of the base plate 210 and the inclined surface of the trapezoidal blocks 310 near the base plate 210 are the same. When the base plate 210 is located between the two trapezoidal blocks 310, the base plate 210 and the two trapezoidal blocks 310 are tightly fitted under the action of the inclined surfaces. The bottoms of both trapezoidal blocks 310 are inclined surfaces, and the tops of both hook blocks 330 are inclined surfaces. The bottom of the trapezoidal blocks 310 and the top of the hook blocks 330 have the same inclination angle. When the base plate 210 tends to slide towards the top of the hopper 100, the inclined surface of the top of the hook block 330 fits against the inclined surface of the trapezoidal block 310, causing the hook block 330 to hook onto the trapezoidal block 310.

[0034] like Figure 6 As shown, both sides of the base plate 210 are provided with movable grooves 320, and sliding plates 321 are slidably connected inside the two movable grooves 320. Both sliding plates 321 are fixedly connected to the barb block 330. Figure 10 As shown, nine springs 322 are fixedly connected at equal intervals inside both movable slots 320. The springs 322 are in a constant compressed state, always applying an outward pushing force to the sliding plate 321, forcing the barb block 330 to remain in the locked position. Figure 6As shown, the hopper 100 has insertion holes 111 on both sides. After inserting the universal push rod into the insertion hole 111, the push rod will press the barb block 330, causing the barb block 330 to slide into the movable groove 320 until the barb block 330 is completely retracted into the movable groove 320. At this time, the barb block 330 separates from the trapezoidal block 310, releasing the locking state. The bottom plate 210 can be removed from the groove 110 for maintenance, realizing tool-free disassembly and assembly (only one universal push rod is needed), which greatly improves the convenience of cleaning and maintenance. At the same time, the insertion hole 111 will not interfere with the internal structure during normal operation, ensuring the integrity and sealing of the appearance.

[0035] The complete assembly and working process of the device of the present invention are described in detail below: I. Component Assembly Process: Top encapsulation: Align the dovetail grooves 241 on both sides of the corrugated flexible plate 240 with the dovetail block 211 on the top of the base plate 210, and slide it in until it completely covers the base plate 210. Integral insertion into the hopper: Assemble the pressure relief assembly as a whole module, align it with the slot 110 at the bottom of the hopper 100, and then push it in forcefully until the barb block 330 of the self-tightening assembly 300 engages and locks with the trapezoidal block 310.

[0036] II. Improve work processes: Preset parameters: Before starting the equipment, the operator rotates the adjusting bolt 273 according to the type of rice (such as dry rice or moist brown rice), which drives the sliding plate 230 to make fine adjustments and set the overlap area (i.e., air permeability) of the conical hole 231 and the trumpet hole 250.

[0037] During the excavation and loading stage: the elevator starts, the hopper 100 moves downward and cuts into the rice pile, the rice impacts the wave flexible plate 240, the W-shaped flexible surface deforms and buffers the impact force, the compressed air in the hopper enters the internal flow channel through the through hole 242, and is discharged at high speed through the conical hole and the horn hole. During this process, the downward pressure of the rice makes the bottom plate 210 press tightly on the trapezoidal block 310, which enhances the sealing and eliminates the risk of material leakage.

[0038] Enhanced cleaning stage: The hopper 100 moves upward, and with the inherent vibration of the equipment, the spring 261 at the bottom generates high-frequency vibration, continuously cleaning the horn hole 250. At the same time, the graphene patch 251 continuously discharges the static electricity generated by friction to prevent dust adsorption.

[0039] Unloading stage: When the hopper 100 runs to the top and flips, the material is thrown out by centrifugal force. The bottom plate 210 is subjected to outward centrifugal force. The hook block 330 further locks the trapezoidal block 310 under the action of the inclined plane to prevent the bottom plate from loosening. At the same time, the outside air is drawn into the hopper in reverse through the horn hole to eliminate the vacuum at the bottom and assist the wet rice bran to fall off.

[0040] Maintenance and disassembly: After shutdown, simply insert the universal push rod into the insertion hole 111 on the side of the hopper to open the barb block 330, and the entire bottom plate assembly can be removed for cleaning or replacement of parts.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rice processing elevator characterized by, The organic frame, the driving assembly and the traction assembly arranged on the frame, and the traction assembly mounted on the traction assembly are included. A hopper (100) for conveying rice, a slot (110) is opened at the bottom of the hopper (100); A pressure relief assembly (200) is arranged inside the slot (110), the pressure relief assembly (200) includes a bottom plate (210) sliding in the slot (110), a sliding groove (220) is opened at the top of the bottom plate (210), a sliding plate (230) is slidingly arranged in the sliding groove (220), a plurality of tapered holes (231) are equidistantly arranged on the sliding plate (230), which are used to increase the pressure when air passes through, a wave flexible plate (240) is arranged on the top of the bottom plate (210), a plurality of through holes (242) are equidistantly arranged on the wave flexible plate (240), which are used to exhaust air in the hopper (100) when loading rice, and a plurality of horn holes (250) are equidistantly arranged on the bottom plate (210), which are used to exhaust dust and debris in the hopper (100); A self-tightening assembly (300) is arranged inside the hopper (100) and the pressure relief assembly (200), the self-tightening assembly (300) includes a trapezoidal block (310) symmetrically fixed in the slot (110), and a plurality of barb blocks (330) are symmetrically arranged on both sides of the bottom plate (210), which are used to fix the bottom plate (210) when the hopper (100) is throwing.

2. A rice processing elevator according to claim 1, characterized in that A plurality of tapered holes (243) are equidistantly arranged on the wave flexible plate (240), the number of the tapered holes (231), the through holes (242), the tapered holes (243) and the horn holes (250) is the same, and the tapered holes (231), the through holes (242), the tapered holes (243) and the horn holes (250) are aligned in the vertical direction.

3. The rice processing elevator according to claim 2, characterized by A plurality of fixed rods (260) are equidistantly fixedly connected to the bottom of the bottom plate (210), the number of the fixed rods (260) is the same as the transverse number of the horn holes (250), a plurality of reeds (261) are equidistantly fixedly connected to each fixed rod (260), the number of the reeds (261) on each fixed rod (260) is the same as the longitudinal number of the horn holes (250), and each reed (261) is inserted into the horn hole (250).

4. The rice processing elevator according to claim 3, wherein Two graphene patches (251) are symmetrically fixedly connected in each horn hole (250), the traction assembly is made of conductive material, the frame is grounded, and the graphene patches (251) form electrical conduction with the bottom plate (210), the hopper (100) and the traction assembly.

5. A rice processing elevator according to claim 4, wherein Two dovetail blocks (211) are symmetrically fixedly connected to the top of the bottom plate (210), and dovetail grooves (241) are arranged on both sides of the wave flexible plate (240).

6. A rice processing elevator as claimed in claim 5, wherein, The bottom of the bottom plate (210) is fixedly connected with a fixing cylinder (270), the inside of the fixing cylinder (270) is rotationally connected with a lead screw (271), the surface of the lead screw (271) is threadedly connected with a nut block (272), one end of the nut block (272) is fixedly connected with an adjusting bolt (273), the bottom plate (210) and the inside of the fixing cylinder (270) are jointly provided with an adjusting groove (280), the inside of the adjusting groove (280) is slidably connected with an adjusting plate (281), the bottom of the adjusting plate (281) is fixedly connected with the nut block (272), and the top of the adjusting plate (281) is fixedly connected with the sliding plate one (230).

7. A rice processing elevator as claimed in claim 6, wherein The two sides of the bottom plate (210) are inclined surfaces, and the two sides of the bottom plate (210) are slidably connected with trapezoidal blocks (310).

8. The rice processing elevator according to claim 1, wherein The bottom of each of the two trapezoidal blocks (310) is an inclined surface, the top of each of the two barbed blocks (330) is an inclined surface, and the bottom of the trapezoidal block (310) and the top of the barbed block (330) have the same inclination angle.

9. A rice processing elevator as claimed in claim 8, wherein, The two sides of the bottom plate (210) are provided with movable grooves (320), the inside of each of the two movable grooves (320) is slidably connected with a sliding plate two (321), the two sliding plate twos (321) are fixedly connected with the barbed blocks (330), and the inside of each of the two movable grooves (320) is fixedly connected with nine springs (322) at equal intervals.

10. The rice processing elevator according to claim 9, wherein The two sides of the hopper (100) are provided with insertion holes (111).

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