Rice screening machine

Abstract

The utility model discloses a rice screening machine. The rice screening machine comprises a machine frame, a stock bin, a vibrating screen, a separation barrel, a dust collection barrel, a dust collection connector and a belt type conveying mechanism. A feed port is formed above the stock bin, and a discharge port is formed below the stock bin; the separation barrel arranged in the stock bin enables the rice to collide with attached impurities in the continuous rotating process, and preliminary separation is achieved; a dust collection barrel on one side of the separation barrel is linked with a dust collection joint, is connected with external dust collection equipment and is used for sucking light impurities such as rice husks and dust; after dust collection treatment, the rice is continuously conveyed to the vibrating screen through the belt type conveying mechanism for secondary screening, and residual impurities and broken rice are further removed. The device is simple in structure, efficient in operation and capable of remarkably improving the purity and the grain integrity of rice raw materials and meeting the requirements of high-quality production processes such as biopharmacy and the like.

Description

Technical Field

[0001] This utility model relates to the field of biopharmaceutical raw material pretreatment equipment, specifically to a rice screening machine. Background Technology

[0002] In the biopharmaceutical industry, the purity and quality requirements for raw materials such as rice and other natural plant materials are extremely high. These raw materials are not only important components of processes such as fermentation, extraction, and formulation, but also directly affect the quality of the final product.

[0003] However, in order to reduce production costs and meet the needs of large-scale production, the applicant needs to purchase rice from multiple supply channels, resulting in inconsistent quality of raw materials provided by suppliers. Some rice even contains fine impurities such as rice husks and dust during the procurement process. These impurities often adhere firmly to the rice and, due to their light weight, are difficult to remove effectively during traditional screening equipment, thus affecting the overall quality of the raw materials.

[0004] Therefore, there is an urgent need to design a rice screening machine to remove fine impurities from rice, ensuring that the rice raw materials entering the biopharmaceutical process meet high-quality requirements, thereby providing a reliable guarantee for product quality. Utility Model Content

[0005] The purpose of this invention is to provide a rice screening machine that can efficiently separate rice husks, dust and other attached impurities from rice while ensuring the integrity of rice grains, thereby significantly improving the purity of rice raw materials and meeting the production requirements of biopharmaceuticals and related high-quality raw materials.

[0006] The technical solution adopted by this utility model to solve the above problems is: a rice screening machine, including a frame, a hopper and a vibrating screen are fixedly installed on the frame, an inlet is provided above the hopper and an outlet is provided below the hopper, a separation cylinder is rotatably arranged inside the hopper, a dust suction cylinder is provided on one side of the separation cylinder, a dust suction connector communicating with the dust suction cylinder is provided on one side of the hopper, and a belt conveyor mechanism is provided below the separation cylinder.

[0007] Preferably, the vacuum cleaner includes a frame and a screen fitted onto the frame.

[0008] Preferably, the vibrating screen includes a screen bucket inclinedly arranged below the hopper, the screen bucket is connected to the frame by four sets of springs at the top and a vibrating motor for driving its vibration is provided at the rear end, a screen plate is installed inside the screen bucket, and a baffle is inserted into the discharge end of the hopper.

[0009] Preferably, the separating cylinder is equipped with a separating motor that drives its rotation, and the separating motor is connected to the separating cylinder via a belt drive mechanism.

[0010] Preferably, the belt conveyor mechanism includes two sets of conveyor cylinders and a conveyor belt. The two ends of the conveyor belt are sleeved on the conveyor cylinders, and each set of conveyor cylinders is shaft-connected to a conveyor motor that drives its rotation.

[0011] Preferably, the hopper is equipped with a flat slab, and there is a gap of 5-10mm between the lower end of the flat slab and the upper surface of the conveyor belt.

[0012] Preferably, a partition is obliquely arranged between the dust collection cylinder and the conveyor belt inside the hopper.

[0013] Preferably, a guide plate is provided at the front end of the discharge port, and the guide plate has several guide grooves.

[0014] Preferably, the front end of the discharge port is also provided with a brush cylinder for cleaning the guide channel. The brush cylinder is adapted to two sets of driving cylinders to drive it to move along the guide channel. The two ends of the brush cylinder are respectively connected to the piston rods of the two sets of driving cylinders.

[0015] Compared with the prior art, this utility model has the following advantages and effects:

[0016] This invention organically combines key components such as a separation cylinder, a dust collection cylinder, a vibrating screen, and a belt conveyor mechanism. It fully utilizes various physical actions, such as the collision between rice and the surface of the separation cylinder, negative pressure adsorption, and vibration screening, to achieve multi-stage separation of rice from attached impurities. This effectively removes rice husks, dust, and other fine impurities, ultimately screening out rice that meets the purity and intact particle requirements of biopharmaceutical processes. This satisfies the stringent requirements of high-quality production processes such as biopharmaceuticals for the purity and particle integrity of rice raw materials. Attached Figure Description

[0017] Figure 1 This is a perspective view of a rice screening machine according to an embodiment of the present invention.

[0018] Figure 2 This is a perspective view of a rice screening machine according to an embodiment of the present invention.

[0019] Figure 3 This is a side view of a rice screening machine according to an embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram of the internal structure of the silo in an embodiment of this utility model.

[0021] Figure 5 This is a cross-sectional view of the internal structure of the silo in an embodiment of this utility model.

[0022] Figure 6 This is a schematic diagram of the structure at the material outlet of the hopper in an embodiment of this utility model.

[0023] Attached Figures: Frame 11, Hopper 12, Inlet 121, Outlet 122, Vibrating Screen 13, Separating Cylinder 14, Protrusion 141, Dust Collection Cylinder 15, Dust Collection Connector 16, Belt Conveyor Mechanism 17, Cylinder Frame 21, Screen 22, Screen Bucket 23, Waste Collection Bin 231, Spring 24, Vibrating Motor 25, Screen Plate 26, Baffle 27, Separating Motor 28, Belt Drive Mechanism 29, Conveying Cylinder 31, Conveying Belt 32, Conveying Motor 33, Laying Flat Plate 34, Baffle 35, Guide Plate 36, Guide Channel 37, Brush Cylinder 38, Drive Cylinder 39. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0025] Example:

[0026] See Figure 1 - Figure 6 This embodiment relates to a rice screening machine, mainly used for pre-treatment of raw rice in the biopharmaceutical production process. The purpose is to efficiently remove rice husks, dust, and other fine impurities adhering to the rice, thereby ensuring that the rice entering subsequent fermentation, extraction, and formulation processes has high purity and stable quality. The rice screening machine mainly includes: a frame 11, on which a hopper 12 and a vibrating screen 13 are fixedly mounted. An inlet 121 is provided above the hopper 12, and an outlet 122 is provided below it. A separating cylinder 14 is rotatably arranged inside the hopper 12. A dust suction cylinder 15 is provided on one side of the separating cylinder 14, and a dust suction connector 16 communicating with the dust suction cylinder 15 is provided on one side of the hopper 12. A belt conveyor mechanism 17 is provided below the separating cylinder 14.

[0027] Specifically, in this embodiment, the rice to be processed is evenly fed into the silo 12 through the feed inlet 121 located above the silo 12. The outer surface of the separating cylinder 14 inside the silo 12 is circumferentially arranged with protrusions 141. During continuous rotation, the rice inside the silo 12 collides with the protrusions 141 on the surface of the separating cylinder 14, thereby causing impurities adhering to the surface of the rice to detach from the rice itself, achieving the purpose of preliminary separation. A dust suction cylinder 15 is provided on one side of the separating cylinder 14 and is connected to a dust suction connector 16, which is used to connect to an external dust suction device. As the separating cylinder 14 rotates, the dust suction cylinder 15 simultaneously functions to suction out light impurities such as rice husks and dust generated during the preliminary separation process. The belt conveyor mechanism 17 continuously transports the dust-treated rice to the discharge outlet 122 below the silo 12 and finally onto the vibrating screen 13 located below the silo 12. Vibrating screen 13 is used to screen the rice after dust collection, further separating the rice from remaining impurities and broken rice, and selecting rice with intact grains and better quality. This ensures that the rice meets the purity and intact grain requirements of biopharmaceutical processes. Through the above steps, the entire pretreatment process not only achieves multi-stage removal of impurities but also ensures that the rice raw material meets strict quality standards before entering subsequent fermentation, extraction, and formulation processes.

[0028] See Figure 4 The dust collection cylinder 15 includes a cylinder frame 21 and a screen 22 sleeved on the cylinder frame 21. In this embodiment, the dust collection cylinder 15 uses the cylinder frame 21 as the basic load-bearing structure, and its outer surface is uniformly covered with a fine screen 22. After the dust collection cylinder 15 is connected to an external dust collection device through the dust collection connector 16, it extracts or intercepts small impurities such as rice husks thrown out from the side of the separation cylinder 14 under negative pressure.

[0029] The vibrating screen 13 includes a screen hopper 23 inclined below the hopper 12. The screen hopper 23 is connected to the frame 11 via four sets of springs 24, and a vibrating motor 25 is installed at its rear end to drive its vibration. A screen plate 26 is installed inside the screen hopper 23, and a baffle 27 is inserted into the discharge end of the hopper. In this embodiment, the screen hopper 23 of the vibrating screen 13 is designed with an inclined arrangement, allowing the rice to slide smoothly under gravity. Simultaneously, the vibration generated by the vibrating motor 25 achieves efficient separation of the rice from residual impurities and broken rice. The screen holes of the screen plate 26 allow smaller particles of impurities and broken rice to be screened out and stored in the waste collection bin 231 below the screen hopper 23, while intact rice particles are output from the discharge end of the screen hopper 23. The baffle 27 is located below the discharge end of the screen hopper 23, with its upper edge contacting the screen plate 26, preventing impurities passing through the screen holes of the screen plate 26 from entering.

[0030] The separating cylinder 14 is equipped with a separating motor 28 that drives its rotation. The separating motor 28 is connected to the separating cylinder 14 via a belt drive mechanism 29. The separating cylinder 14, in conjunction with the inner wall of the hopper 12, can fully agitate the rice during high-speed rotation, causing impurities such as rice husks and dust adhering to the surface of the rice to detach from the rice body under collision and centrifugal force.

[0031] See Figure 5 and Figure 6 The belt conveyor mechanism 17 includes two sets of conveyor cylinders 31 and a conveyor belt 32. Both ends of the conveyor belt 32 are fitted onto the conveyor cylinders 31. Each set of conveyor cylinders 31 is shaft-connected to a conveyor motor 33 that drives its rotation. The conveyor belt 32 is horizontally positioned to ensure stable and continuous material transport. In this embodiment, to ensure the rice is evenly spread on the belt conveyor mechanism 17, a spreading plate 34 is installed inside the hopper 12. The spreading plate 34 is positioned above the conveyor belt 32, with a 5-10mm gap between it and the surface of the conveyor belt 32. This effectively ensures that the rice is evenly distributed when passing through the spreading plate 34, preventing excessive material accumulation that could affect the screening effect of the subsequent vibrating screen 13.

[0032] In this embodiment, a partition 35 is obliquely arranged inside the hopper 12 between the dust collection cylinder 15 and the belt conveyor mechanism 17 to partially block the dust collection area of ​​the dust collection cylinder 15 and the conveying area of ​​the belt conveyor mechanism 17, thereby reducing the re-mixing of impurities such as rice husks and dust into the belt conveyor mechanism 17.

[0033] In this embodiment, a guide plate 36 is arranged at the front end of the discharge port 122 of the hopper 12, and several guide channels 37 are formed on the plate surface, so that the rice flows out evenly along the guide channels 37. A brush cylinder 38 for cleaning the guide channels 37 is also provided at the front end of the discharge port 122. The brush cylinder 38 is adapted to two sets of drive cylinders 39 to drive it to move along the guide channels 37, and both ends of the brush cylinder 38 are respectively connected to the piston rods of the two sets of drive cylinders 39. Rice may become clogged in the guide channels 37. The brush bristles on the brush cylinder 38 clean the guide channels 37, removing the clogged rice.

[0034] The above description in this specification is merely illustrative of the present invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not depart from the content of this specification or exceed the scope defined in the claims, all of which shall fall within the protection scope of this invention.

Claims

1. A rice screening machine characterized by, The device comprises a rack, a bin and a vibrating screen fixedly installed on the rack, a feeding port arranged above the bin, a discharging port arranged below the bin, a separation cylinder rotatably arranged in the bin, a dust suction cylinder arranged on one side of the separation cylinder, a dust suction connector arranged on one side of the bin and communicated with the dust suction cylinder, and a belt conveying mechanism arranged below the separation cylinder.

2. The rice screening machine according to claim 1, characterized in that: The dust suction cylinder comprises a cylinder frame and a screen mesh sleeved on the cylinder frame.

3. The rice screening machine according to claim 1, wherein: The vibrating screen comprises a screen hopper obliquely arranged below the bin, four groups of springs arranged above the screen hopper and connected with the rack, a vibrating motor arranged at the rear end of the screen hopper and used to drive the vibrating screen to vibrate, and a screen plate arranged in the screen hopper.

4. The rice screening machine according to claim 1, wherein: The separation cylinder is provided with a separation motor used to drive the separation cylinder to rotate.

5. The rice screening machine according to claim 1, wherein: The belt conveying mechanism comprises two groups of conveying cylinders and a conveying belt, the two ends of the conveying belt are sleeved on the conveying cylinders, and any one group of the conveying cylinders is provided with a conveying motor used to drive the conveying cylinder to rotate.

6. A rice grader according to claim 5, wherein: A leveling plate is arranged in the bin, and a gap with a size of 5-10 mm is left between the lower end of the leveling plate and the upper surface of the conveying belt.

7. The rice screening machine according to claim 5, wherein: A partition plate is obliquely arranged between the dust suction cylinder and the conveying belt in the bin.

8. The rice screening machine according to claim 1, wherein: A guide plate is arranged at the front end of the discharging port, and a plurality of guide through grooves are arranged in the guide plate.

9. The rice screening machine according to claim 8, wherein: A brush cylinder used to clean the guide through grooves is further arranged at the front end of the discharging port, the brush cylinder is provided with two groups of driving cylinders used to drive the brush cylinder to move along the guide through grooves, and the two ends of the brush cylinder are respectively connected to the piston rods of the two groups of driving cylinders.

Images