Device and process for controlling nanoscale particle size of fruit and vegetable powder

Abstract

The fruit and vegetable powder nanoscale particle size control equipment comprises a first discharging pipe, the first discharging pipe is fixedly connected to the outer bottom of a spiral conveying screening machine, the lower bottom of the first discharging pipe is fixedly connected with an ultrafine pulverizer, and a screen plate is movably attached to the interior of the first discharging pipe; a collision assembly is movably connected to the side wall of the first discharging pipe in an inserted mode, a limiting assembly is slidably connected into the collision assembly, the collision assembly limits the limiting assembly, and in the process of pulling a handle plate, under the condition that a screen plate fluctuates, materials on the surface of the screen plate can be shaken, so that the materials on the surface of the screen plate are shaken; the phenomenon that the discharging speed is reduced due to material accumulation is prevented; and then the handle plate is loosened, the compressed spring I bounces off, the center of the screen plate also moves, and when the screen plate returns to the original position, the magnet I and the three groups of magnets II continuously contact once again to generate fluctuation again, so that the materials on the surface of the screen plate are fully shaken.

Description

Technical Field

[0001] The invention belongs to the technical field of nano-particle size of fruit and vegetable powder, and particularly relates to a device and a process for controlling the nano-particle size of fruit and vegetable powder. Background Art

[0002] Nano-particle size of fruit and vegetable powder refers to a powdered product in which fruits and vegetables are processed by a special process to make their particles reach the nano-level (1 nanometer equals one billionth of a meter); this technology can greatly improve the solubility and bioavailability of fruit and vegetable powder, making it easier for the human body to absorb the nutrients in it; in the processing of nano-particle size of fruit and vegetable powder, there are professional control equipment for screening particle size; these control equipment are mainly used to ensure that the particle size distribution of the final product is uniform and meets the required nano-level standards; commonly used control equipment includes screw conveyor screening machines, which combine screw conveyor and screening functions, and can perform preliminary screening at the same time during the material conveying process. It is suitable for conveying materials after coarse crushing and removing larger particles or impurities.

[0003] For example, the double overflow screw conveyor for granular salt screening disclosed in National Patent Publication No. CN215797197U includes a screw conveyor, the front end of the screw conveyor is connected to a feed hopper, the end is provided with a first overflow port for material to flow out, the screw conveyor is provided with a plurality of discharge ports for connecting to a screening machine at intervals along its material conveying direction, the feed hopper is provided with a second overflow port for the overflow of the internal material, so that it is not easy to get blocked when conveying materials to a plurality of screening machines of different specifications at the same time, and the conveyor can continue to operate when any screening machine stops.

[0004] However, the conventional device still has the following problems when used: When the screening machine is screening the nano-sized fruit and vegetable powder materials, the materials that meet the size are generally directly accumulated at the screening port. The nano-sized fruit and vegetable powder containing powder is prone to clogging, which will greatly reduce the screening efficiency of the material conveyor through overflow. Summary of the invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a fruit and vegetable powder nano-particle size control device and process, which has the advantage of avoiding the clogging of the sieve plate by the powdery fruit and vegetable powder nano-particles, so that the material can be screened out from the screening port more smoothly.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a nano-particle size control device for fruit and vegetable powder, comprising a first discharge pipe, the first discharge pipe is fixedly connected to the outer bottom of a spiral conveying and screening machine, the lower bottom of the first discharge pipe is fixedly connected to an ultrafine grinder, the top of the first discharge pipe runs through the interior of the spiral conveying and screening machine, the interior of the first discharge pipe is movably fitted with a screen plate, the side wall of the first discharge pipe is movably plugged with a collision component, the interior of the collision component is slidably connected with a limiting component, and one end of the limiting component is movably plugged into the outer side wall of the screen plate, the collision component limits the limiting component, the top of the screen plate is movably fitted with a dustproof component, and the top of the dustproof component is movably fitted with the bottom of a fixed platform, and the fixed platform is fixedly connected to the inner annular surface of the first discharge pipe.

[0007] Preferably, an electric motor is installed on the outside of one side of the screw conveying screening machine, a spiral blade is fixedly connected to the rotating end of the motor, and the spiral blade is laterally rotatably connected to the inner side wall of the screw conveying screening machine, a feed port is fixedly installed on the outer top of the screw conveying screening machine, the bottom of the feed port passes through the interior of the screw conveying screening machine, a second discharge pipe is fixedly installed on the outer bottom of the screw conveying screening machine, the top of the second discharge pipe passes through the interior of the screw conveying screening machine, and the first discharge pipe is an annular tubular structure.

[0008] Preferably, the inner ring surface of the first discharge pipe is fixedly connected with a guide plate, and the guide plate is an arc-shaped plate structure. The outer ring surface of the screen plate is fixedly connected with a guide block, and the guide block is movably fitted with the inner ring surface of the guide plate. There are two groups of guide blocks, and the two groups of guide blocks are symmetrically distributed about the center of the screen plate.

[0009] Preferably, a plurality of screening ports are evenly arranged on the top of the first discharge pipe, and the top surface of the screen plate is movably fitted with the bottom surface of the fixed platform.

[0010] Preferably, a movable opening is provided on the outer wall of the first discharge pipe, and the movable opening passes through the interior of the first discharge pipe. A limiting groove is provided on the outer wall of the first discharge pipe, and the limiting groove is an "L"-shaped plate groove structure, and the limiting groove is connected with the movable opening, and the collision assembly is movably inserted in the movable opening.

[0011] Preferably, the collision assembly includes a mounting rod, a rubber strip, a spring, a positioning rod, and an auxiliary plate. The mounting rod is a "T"-shaped column structure, the mounting rod is movably inserted in the movable port, one end of the mounting rod is located inside the first discharge pipe, the auxiliary plate is fixedly connected to one end of the mounting rod, and the auxiliary plate is fitted with the outer annular surface of the screen plate, the rubber strip is an annular structure with a semicircular cross-section, the rubber strip is fixedly connected to the outside of the mounting rod, and the rubber strip is located between the mounting rod and the outer annular surface of the first discharge pipe.

[0012] Preferably, a through positioning groove is formed on the side surface of the mounting rod. The positioning rod has a circular cylindrical structure, and both ends of the positioning rod are respectively fixed on the upper top surface and the lower bottom surface of the positioning groove. The first spring is fixed between one side of the auxiliary plate and the inner ring surface of the first discharge pipe, and the first spring is sleeved on the outer ring surface of the mounting rod.

[0013] Preferably, the limiting assembly includes a limiting plate and a handle plate. The limiting plate is an "L"-shaped plate, and the handle plate is a "匚"-shaped plate. The open end of the handle plate is fixedly connected to the top surface of the longer plate of the limiting plate. The limiting plate is slidably connected in the positioning groove. The central horizontal plate and the adjacent vertical plate of the handle plate are slidably connected in the limiting groove, and the shorter plate of the limiting plate is movably attached to the side groove. The side groove is formed on the outer ring surface of the screen plate, and the side groove is a "T"-shaped plate-shaped groove.

[0014] Preferably, a through hole penetrating the limiting plate is formed at the top of the limiting plate. The positioning rod passes through the through hole. And two groups of limiting assemblies are provided, and the two groups of limiting assemblies are symmetrically distributed about the center of the positioning rod. And a second spring is provided between the two groups of limiting assemblies, and the second spring is sleeved on the outer side of the positioning rod.

[0015] Preferably, the dust-proof assembly includes a holding ring and a rubber sheet. A top opening groove is formed at the top of the side groove. The top opening groove is an annular plate-shaped groove body structure with a "T"-shaped cross section. The top opening groove communicates with the top of the side groove. The holding ring is an annular plate with a "T"-shaped cross section. The holding ring is movably attached to the top opening groove. The rubber sheet is an annular plate-shaped structure with a triangular cross section. The rubber sheet is fixed on the upper top surface of the holding ring, and the rubber sheet is movably attached to the bottom of the fixed table.

[0016] Preferably, a first magnet is fixedly installed on the upper top surface of the screen plate, and a second magnet is fixedly installed on the bottom of the fixed table. Three groups of second magnets are provided and are fixedly adjacent to each other. The middle group of second magnets attracts the first magnet, and the second magnets on the left and right sides of the middle group of second magnets repel the first magnet. And four groups of first magnets are provided, and the four groups of first magnets are distributed in an annular array about the center of the screen plate.

[0017] Preferably, a process for controlling the nano-scale particle size of fruit and vegetable powder is characterized in that: it includes a device for controlling the nano-scale particle size of fruit and vegetable powder described in any one of the above claims -, and its control process is as follows: Step 1: Put the material into the feed port, and the material will fall into the interior of the screw conveyor and sieve. Start the motor to drive the overall rotation of the screw blade, thereby driving the material for transportation. When the material is transported above the first discharge pipe, the material with a smaller diameter will fall through the screening port to the next device where the material is to be processed, realizing preliminary screening, while the larger particles or impurities will continue to be transported to the second discharge pipe for output; Step 2: The movement of the limit plate will drive the entire screen plate to move. During the movement of the screen plate, the magnet 1 on the top of the screen plate will move closer to the magnet 2. The magnet 1 and the magnet 2 will attract each other after they get close to each other. On the contrary, the magnet 1 will move away from the magnet 2 when it gets close to the magnet 2. During the entire operation of the screen plate, the screen plate as a whole will realize an up and down fluctuating motion trajectory; Step 3: Loosen the handle plate, the compressed spring will pop open and the center of the screen plate will move back to its original position. When the screen plate returns to its original position, magnet one and group two of magnets will contact each other again and generate fluctuations again. During the back and forth movement of the screen plate, the screen plate can vibrate twice, thereby fully shaking the material on the surface of the screen plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the movement of the limit plate will drive the overall movement of the screen plate. During the movement of the screen plate, the magnet one on the top of the screen plate will approach the direction of the magnet two, and the magnet one and the magnet two that attract each other will be attracted together after approaching each other. Conversely, the magnet one will move away from each other when it approaches the magnet two that repel each other. During the entire operation of the screen plate, the screen plate as a whole will realize an up and down fluctuating motion trajectory; the handle plate is released, the compressed spring one will bounce off, and the center of the screen plate will also move in the same direction and return to its original position. When the screen plate returns to its original position, the magnet one and the three groups of magnets two will contact each other continuously again, and fluctuations will be generated again, thereby fully shaking the material on the surface of the screen plate, thereby preventing the nano-sized particles of fruit and vegetable powder containing powder from being blocked at the screen plate, so that the material can be screened out from the screening port more smoothly and enter the ultrafine pulverizer for secondary screening. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a half-section schematic diagram of the local structure of the present invention.

[0021] Figure 3 It is a half-section schematic diagram of the first discharge pipe structure of the present invention.

[0022] Figure 4 It is a partial cross-sectional schematic diagram of the screen plate structure of the present invention.

[0023] Figure 5 It is a half-section schematic diagram of the collision assembly structure of the present invention.

[0024] Figure 6 It is a half-section schematic diagram of the limit assembly structure of the present invention.

[0025] Figure 7 It is a partial schematic diagram of the dustproof component structure of the present invention.

[0026] Figure 8 It is a half-section schematic diagram of the cooperation structure between the first discharge pipe and the screen plate of the present invention.

[0027] Fig. 9 for Figure 8 A schematic diagram of the enlarged structure in the middle.

[0028] Fig.10 for Fig. 9 Enlarged schematic diagram of the structure at point B in the middle.

[0029] In the figure: screw conveyor screening machine 1, feed inlet 2, motor 3, first discharge pipe 4, second discharge pipe 5, spiral blade 6, fixed platform 7, guide plate 8, movable port 9, limit slot 10, screen plate 11, guide block 12, mounting rod 13, rubber strip 14, positioning slot 15, limit plate 16, handle plate 17, spring 1 18, positioning rod 19, spring 2 20, top opening slot 21, top holding ring 22, rubber sheet 23, through port 24, screening port 25, magnet 1 26, magnet 2 27, side slot 28, auxiliary plate 29, ultrafine pulverizer 30. DETAILED DESCRIPTION

[0030] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] For example, see Figures 1 to 10 The present invention provides a technical solution: a device for controlling the nano-particle size of fruit and vegetable powder, comprising a first discharge pipe 4, the first discharge pipe 4 is fixedly connected to the outer bottom of a spiral conveyor screening machine 1, and the top of the first discharge pipe 4 runs through the interior of the spiral conveyor screening machine 1, characterized in that: a screen plate 11 is movably attached to the interior of the first discharge pipe 4, a collision component is movably inserted into the side wall of the first discharge pipe 4, a limiting component is slidably connected to the interior of the collision component, and one end of the limiting component is movably inserted into the outer side wall of the screen plate 11, the collision component limits the limiting component, a dustproof component is movably attached to the top of the screen plate 11, and the top of the dustproof component is movably attached to the bottom of a fixed platform 7, and the fixed platform 7 is fixedly connected to the inner annular surface of the first discharge pipe 4; In the process of pulling the handle plate 17, the screen plate 11 can shake the material on its surface when it fluctuates, so as to prevent the material from piling up and reducing the feeding speed; finally, the handle plate 17 is released, the compressed spring 18 will pop open, and the center of the screen plate 11 will also move in the center and return to its original position. When the screen plate 11 returns to its original position, the magnet 1 26 and the three groups of magnets 2 27 will contact each other again and generate fluctuations again. In the process of the screen plate 11 moving back and forth, the screen plate 11 can achieve two vibrations, so as to fully shake the material on the surface of the screen plate 11, so as to avoid the nano-sized particles of fruit and vegetable powder containing powder from being blocked at the screen plate 11, so that the material can be screened out from the screening port 25 relatively smoothly and enter the ultrafine pulverizer 30 for secondary screening; Embodiment 2, on the basis of embodiment 1, in order to realize the conveying of materials during processing, a motor 3 is installed on the outside of one side of the screw conveying and screening machine 1, and a spiral blade 6 is fixedly connected to the rotating end of the motor 3, and the spiral blade 6 is rotatably connected to the inner side wall of the screw conveying and screening machine 1 in a transverse direction, and a feed port 2 is fixedly installed on the outer top of the screw conveying and screening machine 1, and the bottom of the feed port 2 runs through the inside of the screw conveying and screening machine 1, and a second discharge pipe 5 is fixedly installed on the outer bottom of the screw conveying and screening machine 1, and the top of the second discharge pipe 5 runs through The first discharge pipe 4 is passed through the interior of the spiral conveyor screening machine 1, and is in an annular tubular structure. The inner annular surface of the first discharge pipe 4 is fixedly connected with a guide plate 8, and the guide plate 8 is in an arc-shaped plate-shaped structure. The outer annular surface of the screen plate 11 is fixedly connected with a guide block 12, and the guide block 12 is movably fitted with the inner annular surface of the guide plate 8, and two groups of guide blocks 12 are provided, and the two groups of guide blocks 12 are symmetrically distributed about the center of the screen plate 11. A plurality of screening ports 25 are evenly opened on the top of the first discharge pipe 4, and the top surface of the screen plate 11 is movably fitted with the bottom surface of the fixed platform 7; The material is put into the feed port 2, and the material will fall into the interior of the screw conveyor screening machine 1. The motor 3 is started to drive the spiral blade 6 to rotate as a whole, thereby driving the material to be transported. When the material is transported to the top of the first discharge pipe 4, the material with a smaller diameter will fall through the screening port 25 to the next material to be processed equipment, realizing the first-level screening, while the larger particles or impurities will continue to be transported to the second discharge pipe 5 for output; Embodiment 3. On the basis of Embodiment 2, an activity port 9 is opened on the outer side wall of the first discharge pipe 4. The activity port 9 penetrates through the inside of the first discharge pipe 4. A limiting groove 10 is opened on the outer side wall of the first discharge pipe 4. The limiting groove 10 is in the shape of an "L"-shaped plate-shaped groove structure, and the limiting groove 10 communicates with the activity port 9. The collision assembly is movably inserted into the activity port 9. The collision assembly includes a mounting rod 13, a rubber strip 14, a first spring 18, a positioning rod 19, and an auxiliary plate 29. The mounting rod 13 is in the shape of a "T"-shaped cylinder structure. The mounting rod 13 is movably inserted into the activity port 9. One end of the mounting rod 13 is located inside the first discharge pipe 4. The auxiliary plate 29 is fixedly connected to one end of the mounting rod 13, and the auxiliary plate 29 is attached to the outer ring surface of the screen plate 11. The rubber strip 14 is in a ring structure with a semicircular cross-section. The rubber strip 14 is fixedly connected to the outer side of the mounting rod 13, and the rubber strip 14 is located between the mounting rod 13 and the outer ring surface of the first discharge pipe 4. A through positioning groove 15 is opened on the side surface of the mounting rod 13. The positioning rod 19 is in the shape of a circular cylinder structure. The two ends of the positioning rod 19 are respectively fixed on the upper top surface and the lower bottom surface of the positioning groove 15. The first spring 18 is fixed between one side of the auxiliary plate 29 and the inner ring surface of the first discharge pipe 4. The first spring 18 is sleeved on the outer ring surface of the mounting rod 13. The limiting assembly includes a limiting plate 16 and a handle plate 17. The limiting plate 16 is in the shape of an "L"-shaped plate, and the handle plate 17 is in the shape of a "匚"-shaped plate. The open end of the handle plate 17 is fixedly connected to the top surface of the longer plate of the limiting plate 16. The limiting plate 16 is slidably connected to the positioning groove 15. The central horizontal plate and the adjacent vertical plate of the handle plate 17 are slidably connected to the limiting groove 10, and the shorter plate of the limiting plate 16 is movably attached to the side groove 28. The side groove 28 is opened on the outer ring surface of the screen plate 11. A through hole 24 penetrating the limiting plate 16 is opened at the top of the spiral blade 6. The positioning rod 19 passes through the through hole 24, and two groups of limiting assemblies are provided. The two groups of limiting assemblies are symmetrically distributed about the center of the positioning rod 19, and a second spring 20 is provided between the two groups of limiting assemblies. The second spring 20 is sleeved on the outer side of the positioning rod 19; Please refer to Figure 8 , while pulling the two handle plates 17 to move away from the first discharge pipe 4 at the same time. During the process of pulling the handle plates 17, the handle plates 17 will drive the limiting plates 16 to move synchronously; under the support of the second spring 20, the two limiting plates 16 always tend to move away from each other, which can ensure that the shorter plates of the limiting plates 16 are always movably attached to the inside of the handle plates 17. Therefore, the movement of the limiting plates 16 will drive the overall movement of the screen plate 11; until the outer ring surface of the screen plate 11 moves to fit the inner ring surface of the first discharge pipe 4, the first spring 18 is also compressed at the same time; Embodiment 4, on the basis of embodiment 3, a magnet 1 26 is fixedly installed on the upper top surface of the screen plate 11, a magnet 27 is fixedly installed on the bottom of the fixing platform 7, three groups of magnets 27 are provided, and the three groups of magnets 27 are fixed adjacently, the middle group of magnets 27 and the magnet 1 26 are attracted, and the magnets 27 on the left and right sides of the middle group of magnets 27 and the magnet 1 26 repel each other, and four groups of magnets 1 26 are provided, and the four groups of magnets 1 26 are distributed in a circular array about the center of the screen plate 11; Please refer to Figure 7-10 It is known that the movement of the limit plate 16 will drive the entire screen plate 11 to move. During the movement of the screen plate 11, the magnet 1 26 on the top of the screen plate 11 will approach the magnet 2 27. The magnet 1 26 and the magnet 2 27 will attract each other after approaching each other. On the contrary, the magnet 1 26 will move away from the magnet 2 27 when approaching each other. During the entire operation of the screen plate 11, the screen plate 11 as a whole will realize an up and down fluctuating motion trajectory. Embodiment 5, on the basis of embodiment 4, the dustproof assembly includes a top holding ring 22 and a rubber sheet 23, a top opening groove 21 is provided on the top of the screen plate 11, and the top opening groove 21 is an annular plate-like groove structure with a "T"-shaped cross section. The top opening groove 21 is connected with the top of the screen plate 11 and the handle plate 17, the top holding ring 22 is an annular plate with a "T"-shaped cross section, the top holding ring 22 is movably fitted in the top opening groove 21, the rubber sheet 23 is an annular plate-like structure with a triangular cross section, the rubber sheet 23 is fixed to the upper top surface of the top holding ring 22, and the rubber sheet 23 is movably fitted with the bottom of the fixed platform 7; During the movement of the screen plate 11, there is a certain gap between the top of the screen plate 11 and the bottom of the fixed platform 7. When the material is screened through the screening opening 25, the rubber sheet 23 can effectively prevent dust from floating into the limit assembly and affecting the use of the limit assembly and the collision assembly. At the same time, the rubber sheet 23 will have a certain contact with the bottom of the second magnet 27. At that time, the texture of the rubber sheet 23 is relatively soft, so it will not affect the contact between the first magnet 26 and the multiple groups of second magnets 27. Embodiment 6, on the basis of embodiment 3, realizes the disassembly of screen plate 11, and squeezes two groups of handle plates 17 at the same time, until two groups of handle plates 17 fit together, when two groups of handle plates 17 fit together, limit plate 16 movably fits in the shorter plate in side groove 28 and will be in the notch where side groove 28 and outside are connected, at this time, pull the two groups of handle plates 17 as a whole away from first discharge pipe 4 to make spiral blade 6 disengage from side groove 28, at this time, screen plate 11 has no external structure support, and will fall out of first discharge pipe 4 under the action of its own gravity, so that screen plate 11 can be deeply cleaned to prevent material dust from adhering to the surface of screening port 25, so as to facilitate the subsequent smoother screening of material.

[0032] The working principle and use process of the present invention are as follows: the material is put into the feed port 2, the material will fall into the interior of the spiral conveyor screening machine 1, and the motor 3 is started to drive the spiral blade 6 to rotate as a whole, thereby driving the material to be transported. When the material is transported to the top of the first discharge pipe 4, the material with a smaller diameter will fall through the screening port 25 to the next material to be processed equipment, realizing preliminary screening, while the larger particles or impurities will continue to be transported to the second discharge pipe 5 for output; at the same time, the two groups of handle plates 17 are pulled to move in the direction away from the first discharge pipe 4. In the process of pulling the handle plates 17, the handle plates 17 will drive the limit plates 16 to move synchronously; under the support of the spring 20, the two groups of limit plates 16 always tend to move away from each other. , which can ensure that the shorter plate of the limit plate 16 is always in fit with the internal movement of the handle plate 17, so the movement of the limit plate 16 will drive the screen plate 11 to move as a whole; until the screen plate 11 moves to the point where its outer annular surface is in fit with the inner annular surface of the first discharge pipe 4, the spring 18 is also squeezed and compressed at the same time; it is known that the movement of the limit plate 16 will drive the screen plate 11 to move as a whole, and during the movement of the screen plate 11, the magnet 1 26 on the top of the screen plate 11 will approach the direction of the magnet 2 27, and the magnet 1 26 and the magnet 2 27 that attract each other will be attracted together after approaching each other, and conversely, the magnet 1 26 will move away from the magnet 2 27 that repels each other, and during the entire operation of the screen plate 11, the screen plate 11 as a whole will fluctuate up and down. movement trajectory; therefore, in the process of pulling the handle plate 17, the screen plate 11 can shake the material on its surface when it fluctuates, so as to prevent the material from piling up and reducing the feeding speed; finally, release the handle plate 17, the compressed spring 18 will bounce off, and the center of the screen plate 11 will also move to the center and return to its original position. When the screen plate 11 returns to its original position, the magnet 1 26 and the three groups of magnets 2 27 will contact each other continuously again and generate fluctuations again. In the process of the screen plate 11 moving back and forth, the screen plate 11 can vibrate twice, so as to fully shake the material on the surface of the screen plate 11, so that in the process of pulling the handle plate 17, the screen plate 11 can In order to shake the material on its surface, the material is prevented from piling up and reducing the feeding speed; finally, the handle plate 17 is released, the compressed spring 18 will pop open, and the center of the screen plate 11 will also move to the center and return to its original position. When the screen plate 11 returns to its original position, the magnet 1 26 and the three groups of magnets 2 27 will contact each other again and produce fluctuations again. In the process of the screen plate 11 moving back and forth, the screen plate 11 can vibrate twice, so as to fully shake the material on the surface of the screen plate 11, so as to avoid the clogging of the nano-sized particles of fruit and vegetable powder containing powder at the screen plate 11, so that the material can be screened out from the screening port 25 more smoothly.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for controlling the nano-particle size of fruit and vegetable powder, comprising a first discharge pipe (4), the first discharge pipe (4) being fixedly connected to the outer bottom of a screw conveyor screening machine (1), the lower bottom of the first discharge pipe (4) being fixedly connected to an ultrafine pulverizer (30), the top of the first discharge pipe (4) passing through the interior of the screw conveyor screening machine (1), characterized in that: The first discharge pipe (4) is movably fitted with a screen plate (11) inside, a collision component is movably inserted into the side wall of the first discharge pipe (4), the collision component is internally slidably connected to a limit component, and one end of the limit component is movably inserted into the outer wall of the screen plate (11), the collision component limits the limit component, the top of the screen plate (11) is movably fitted with a dustproof component, and the top of the dustproof component is movably fitted with the bottom of the fixed platform (7), and the fixed platform (7) is fixedly connected to the inner annular surface of the first discharge pipe (4).

2. The device for controlling the nano-particle size of fruit and vegetable powder according to claim 1, characterized in that: A motor (3) is installed on the outside of one side of the screw conveyor screening machine (1), a spiral blade (6) is fixedly connected to the rotating end of the motor (3), and the spiral blade (6) is connected to the inner wall of the screw conveyor screening machine (1) in a transversely rotatable manner, a feed port (2) is fixedly installed on the top of the outer side of the screw conveyor screening machine (1), the bottom of the feed port (2) passes through the interior of the screw conveyor screening machine (1), a second discharge pipe (5) is fixedly installed on the bottom of the outer side of the screw conveyor screening machine (1), the top of the second discharge pipe (5) passes through the interior of the screw conveyor screening machine (1), and the first discharge pipe (4) is an annular tubular structure.

3. The device for controlling the nano-particle size of fruit and vegetable powder according to claim 2, characterized in that: The inner ring surface of the first discharge pipe (4) is fixedly connected to a guide plate (8), the guide plate (8) being of an arc-shaped plate structure; the outer ring surface of the screen plate (11) is fixedly connected to a guide block (12), the guide block (12) being movably fitted with the inner ring surface of the guide plate (8), and two groups of guide blocks (12) are provided, the two groups of guide blocks (12) being symmetrically distributed about the center of the screen plate (11); a magnet one (26) is fixedly mounted on the upper top surface of the screen plate (11), a magnet two (27) is fixedly mounted on the bottom of the fixed platform (7), three groups of magnet two (27) are provided, the three groups of magnet two (27) are fixed adjacently, the middle group of magnet two (27) is attracted to the magnet one (26), the magnets two (27) on the left and right sides of the middle group of magnet two (27) are repelled from the magnet one (26), and four groups of magnet one (26) are provided, the four groups of magnet one (26) being distributed in a ring array about the center of the screen plate (11).

4. The device for controlling the nano-particle size of fruit and vegetable powder according to claim 3, characterized in that: A plurality of groups of screening openings (25) are evenly arranged on the top of the first discharge pipe (4), and the top surface of the screen plate (11) is movably fitted to the bottom surface of the fixed platform (7).

5. The device for controlling the nano-particle size of fruit and vegetable powder according to claim 4, characterized in that: The outer wall of the first discharge pipe (4) is provided with a movable opening (9), the movable opening (9) runs through the interior of the first discharge pipe (4), the outer wall of the first discharge pipe (4) is provided with a limiting groove (10), the limiting groove (10) is an "L"-shaped plate-like groove structure, and the limiting groove (10) is connected with the movable opening (9), and the collision component is movably inserted in the movable opening (9).

6. The device for controlling the nano-particle size of fruit and vegetable powder according to claim 1, characterized in that: The collision assembly includes a mounting rod (13), a rubber strip (14), a first spring (18), a positioning rod (19), and an auxiliary plate (29). The mounting rod (13) has a "T"-shaped cylindrical structure and is movably inserted into the movable opening (9). One end of the mounting rod (13) is located inside the first discharge pipe (4). The auxiliary plate (29) is fixedly connected to one end of the mounting rod (13) and is in contact with the outer ring surface of the screen plate (11). The rubber strip (14) has an annular structure with a semicircular cross-section and is fixedly connected to the outer side of the mounting rod (13) and is located between the mounting rod (13) and the outer ring surface of the first discharge pipe (4). There are two sets of collision assemblies, and the two sets of collision assemblies are symmetrically distributed about the center of (4).

7. The device for controlling the nano-particle size of fruit and vegetable powder according to claim 6, characterized in that: A through positioning groove (15) is formed on the side surface of the mounting rod (13). The positioning rod (19) has a circular cylindrical structure, and both ends of the positioning rod (19) are respectively fixed to the upper top surface and the lower bottom surface of the positioning groove (15). The first spring (18) is fixed between one side of the auxiliary plate (29) and the inner ring surface of the first discharge pipe (4), and the first spring (18) is sleeved on the outer ring surface of the mounting rod (13).

8. The device for controlling the nano-particle size of fruit and vegetable powder according to claim 1, characterized in that: The limiting assembly includes a limiting plate (16) and a handle plate (17). The limiting plate (16) is an "L"-shaped plate, and the handle plate (17) is a "匚"-shaped plate. The open end of the handle plate (17) is fixedly connected to the top surface of the longer plate of the limiting plate (16). The limiting plate (16) is slidably connected to the positioning groove (15). The central horizontal plate and the adjacent vertical plate of the handle plate (17) are slidably connected to the limiting groove (10), and the shorter plate of the limiting plate (16) is movably in contact with the side groove (28). The side groove (28) is formed on the outer ring surface of the screen plate (11) and is a "T"-shaped plate-shaped groove. A through hole (24) penetrating the limiting plate (16) is formed at the top of the limiting plate (16). The positioning rod (19) passes through the through hole (24). There are two sets of limiting assemblies, and the two sets of limiting assemblies are symmetrically distributed about the center of the positioning rod (19). A second spring (20) is arranged between the two sets of limiting assemblies, and the second spring (20) is sleeved on the outer side of the positioning rod (19).

9. The device for controlling the nano-particle size of fruit and vegetable powder according to claim 1, characterized in that: The dust-proof assembly includes a supporting ring (22) and a rubber sheet (23). A top opening groove (21) is formed at the top of the side groove (28). The top opening groove (21) has an annular plate-shaped groove structure with a "T"-shaped cross-section and is communicated with the top of the and the side groove (28). The supporting ring (22) is an annular plate with a "T"-shaped cross-section and is movably in contact with the top opening groove (21). The rubber sheet (23) has an annular plate-shaped structure with a triangular cross-section and is fixed to the upper top surface of the supporting ring (22) and is movably in contact with the bottom of the fixed table (7).

10. A process for controlling the nano-particle size of fruit and vegetable powder, characterized in that: It includes a fruit and vegetable powder nano-sized particle control device described in any one of the above claims 1-9, and its control process is as follows: Step 1: Put the material into the feed port (2), the material will fall into the interior of the screw conveyor screening machine (1), start the motor (3) to drive the screw blade (6) to rotate as a whole, thereby driving the material to be transported. When the material is transported to the top of the first discharge pipe (4), the material with a smaller diameter will fall through the screening port (25) to the next material to be processed equipment, thus achieving preliminary screening, while larger particles or impurities will continue to be transported to the second discharge pipe (5) for output; Step 2: The movement of the limit plate (16) will drive the entire screen plate (11) to move. During the movement of the screen plate (11), the magnet 1 (26) on the top of the screen plate (11) will move closer to the magnet 2 (27). When the magnet 1 (26) and the magnet 2 (27) are attracted to each other, they will be attracted to each other. On the contrary, when the magnet 1 (26) is close to the magnet 2 (27) that repels each other, they will move away from each other. During the entire operation of the screen plate (11), the screen plate (11) as a whole will realize an up and down fluctuating motion trajectory. Step 3: Release the handle plate (17), the compressed spring 1 (18) will pop open, and the center of the screen plate (11) will also move to the center and return to its original position. When the screen plate (11) returns to its original position, the magnet 1 (26) and the three sets of magnets 2 (27) will contact each other again and generate vibration again. During the process of the screen plate (11) moving back and forth, the screen plate (11) can achieve two vibrations, thereby fully shaking the material on the surface of the screen plate (11), thereby preventing the material from being blocked at the screen plate (11), so that the material can be screened out from the screening port (25) more smoothly and enter the ultrafine pulverizer (30) for secondary screening.

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