Grinding equipment and method for selenium-rich konjac milk tea powder block

Abstract

The application discloses a grinding device and method for selenium-rich konjac milk tea powder blocks, and relates to the technical field of food processing equipment, comprising a grinding magnetic cavity, a rotating permanent magnet assembly and a spiral grinding assembly; the rotating permanent magnet assembly is arranged outside the grinding magnetic cavity and has multiple groups of permanent magnets; the multiple groups of permanent magnets rotate with the grinding magnetic cavity and do not contact each other; through cooperation with the spiral grinding assembly, the synergistic effect of low-temperature plasma and inert gas is utilized to block the oxidative decomposition of selenium-rich particles caused by high temperature and oxygen contact from the source, ensure the activity of functional ingredients, and through the triple action of spiral shearing, ultrasonic crushing and gap dynamic adjustment, the problem of sticky aggregation of konjac powder is solved, the adaptability grinding of different hardness materials is realized, the consistency of finished product particle size is significantly improved, and the liquid sublimation cold explosion cleaning mode can completely remove residues without disassembling the equipment, thereby avoiding cross contamination.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of food processing equipment, in particular to a grinding device and method for selenium-rich konjac milk tea powder blocks. BACKGROUND

[0002] The selenium-rich konjac milk tea powder block is a new type of healthy food that combines selenium-rich functional ingredients, konjac glucomannan and milk tea flavor substances. Its core value lies in retaining the biological activity of selenium elements (such as selenomethionine and selenocysteine) and improving product taste using the gelation and water retention of konjac glucomannan.

[0003] Currently, in the grinding process of the selenium-rich konjac milk tea powder block, traditional grinding devices (such as hammer mills and high-speed homogenizers) rely on mechanical shear force for grinding. Local high temperatures (usually > 60℃) are generated due to friction during the process. The high viscosity of konjac powder itself has two effects: on the one hand, the viscous substrate hinders the contact between selenium-rich particles and external heat dissipation media (such as air), making it difficult to diffuse local high temperatures and exacerbating oxidation (the selenium loss rate in the wrapped area is much higher than that in the non-wrapped area); on the other hand, the viscosity prevents the free dispersion of selenium-rich particles, further amplifying the uneven distribution caused by density differences, which in turn reduces product functionality and affects the eating experience. Therefore, a grinding device and method for selenium-rich konjac milk tea powder blocks are needed. SUMMARY

[0004] The present application aims to provide a grinding device and method for selenium-rich konjac milk tea powder blocks to solve the problem of uneven distribution caused by density differences in the grinding process of the selenium-rich konjac milk tea powder block, which is caused by the reliance of traditional grinding devices (such as hammer mills and high-speed homogenizers) on mechanical shear force for grinding. Local high temperatures (usually > 60℃) are generated due to friction during the process. The high viscosity of konjac powder itself has two effects: on the one hand, the viscous substrate hinders the contact between selenium-rich particles and external heat dissipation media (such as air), making it difficult to diffuse local high temperatures and exacerbating oxidation (the selenium loss rate in the wrapped area is much higher than that in the non-wrapped area); on the other hand, the viscosity prevents the free dispersion of selenium-rich particles, further amplifying the uneven distribution caused by density differences, which in turn reduces product functionality and affects the eating experience.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a grinding device for selenium-rich konjac milk tea powder blocks, comprising a grinding magnetic cavity, a rotating permanent magnet assembly, and a spiral grinding assembly.

[0006] The rotating permanent magnet assembly is installed outside the grinding magnetic cavity and has multiple groups of permanent magnets that rotate independently and do not contact each other outside the grinding magnetic cavity.

[0007] The spiral grinding assembly is arranged at the bottom of the grinding magnetic cavity, and a conical flow guide cylinder is communicated between the spiral grinding assembly and the grinding magnetic cavity.

[0008] The spiral grinding assembly comprises a cavity, the inside of the cavity is provided with a spiral part, the outside of the top end of the cavity is symmetrically plugged with plasma torches, the inside of the cavity is staggered with ultrasonic transducers, the surface of the cavity is embedded with temperature sensors, and the two sides of the cavity are symmetrically provided with sliding sealing frames, the inside of the sliding sealing frame is slidably connected with a spacing adjusting part, and the side end of the spacing adjusting part is provided with a micro electromagnetic guide rod.

[0009] Preferably, the top of the grinding magnetic cavity is communicated with a feed crushing cavity, the bottom of the feed crushing cavity is communicated with a semicircular grinding cavity, the inside of the grinding magnetic cavity is provided with a bearing grinding disc, the bottom end of the inside of the grinding magnetic cavity is provided with an electric iris valve, the bottom of the electric iris valve is provided with a frequency-modulated vibrating screen, and the inside of the conical flow guide cylinder is provided with an on-off valve for intercepting materials carrying magnetic particles, so that the magnetic particles can be captured by the magnetic bead catcher and then be opened.

[0010] Preferably, the side end of the cavity is externally provided with an inert gas adjusting assembly, the inert gas adjusting assembly comprises an inert gas chamber, the inert gas chamber is sleeved on the outside of the side end of the cavity, the top of the inert gas chamber is communicated with a gas rising pipe, the top of the gas rising pipe is communicated with a gas guide structure, the side end of the gas guide structure is communicated with a closed backflow pipe, the side end of the gas guide structure is communicated with a gas guide pipe, and the gas guide pipe is communicated with the cavity.

[0011] Preferably, the side end of the spiral part is provided with a driving structure assembly, the side end of the driving structure assembly is provided with a driving arrangement frame, the driving arrangement frame is used for arranging a driving variable frequency motor, the driving structure assembly comprises a synchronous pulley, the bottom end of the synchronous pulley is connected with the spiral part, the top end of the synchronous pulley is connected with a synchronous rod, the outside of the synchronous rod is sleeved with a frame bearing rod.

[0012] Preferably, the side end of the synchronization rod is provided with a bevel gear structure, the connecting end of the synchronization rod and the bevel gear structure is provided with an electromagnetic blocker, the bevel gear structure is composed of two bevel gears, one set of bevel gears is connected with a driving rod, the side end of the other set of bevel gears penetrates through the frame bearing rod through a keying rod and is connected with a driving pinion, the side end of the driving pinion is provided with a shock absorbing plate, the driving pinion is provided in two, the top end of the two driving pinions is engaged with a driving gear, the side end of the driving gear is connected with a crushing element, the bottom of the driving rod is connected with a rolling ball, the outside of the rolling ball is sleeved with a secondary grinding disc, the top side of the driving rod is provided with a primary grinding disc, the primary grinding disc and the semicircular grinding cavity form a primary grinding hierarchical structure, and the secondary grinding disc and the bearing grinding disc form a secondary grinding hierarchical structure.

[0013] Preferably, the rotating permanent magnet assembly further comprises a connecting frame, the bottom of the connecting frame is provided with an annular rotating groove, the inside of the annular rotating groove is provided with an annular guide rail, and a plurality of groups of the permanent magnets are connected with positioning sliding seats on the annular guide rail.

[0014] Preferably, the outside of the side rod body of the frame bearing rod is provided with a magnetic particle injector, the bottom of the magnetic particle injector is communicated with a side guide conveying cavity, there is a gap between the primary grinding disc and the grinding magnetic cavity, and the side guide conveying cavity is located at the gap and used for injecting magnetic particles into the inside of the grinding magnetic cavity.

[0015] Preferably, the top of the magnetic particle injector is communicated with a circulating conveying pipe, and the side end of the circulating conveying pipe is communicated with a magnetic bead catcher.

[0016] Preferably, the side end of the cavity is provided with a discharge end at the bottom, and the bottom end of the discharge end is provided with an external quick-release vibrating screen structure, which is used for screening when discharging.

[0017] The method for the grinding equipment of selenium-rich konjac milk tea powder blocks comprises the following steps:

[0018] S1, first, the selenium-rich konjac milk tea powder blocks are preliminarily crushed by the crushing element of the feeding and crushing cavity, then two-stage grinding is completed through the primary grinding disc and the semicircular grinding cavity, the secondary grinding disc and the bearing grinding disc, and simultaneously, the magnetic particle injector is used to inject the magnetic particles loaded with selenium-rich particles into the grinding magnetic cavity. Nanometer magnetic core (magnetic particle);

[0019] S2, then, the permanent magnet of the rotating permanent magnet assembly rotates to generate a rotating magnetic field, the magnetic particles are driven to diffuse directionally in the material, the mixed material is screened through the electric iris valve and the frequency-modulated vibrating screen, when the material passes through the cone flow guide cylinder, the on-off valve is closed, the magnetic bead catcher captures the residual magnetic particles (which are recycled through the circulating conveying pipe), then the on-off valve is opened, and the material enters the spiral grinding assembly.

[0020] S3, then, make the screw rotation conveying material, inert gas adjusting assembly into argon, plasma torch ionization produces low temperature plasma (-10℃-20℃, using external PLC controller real-time temperature control), ultrasonic transducer (20-40kHz) cooperation screw shear force broken agglomerates, micro electromagnetic guide rod drive spacing adjustment component dynamic adjustment grinding spacing (0.5-2mm), complete fine grinding:

[0021] S4, then, make the material through the discharge end discharge, external vibration screen screening finished product; after each batch, inject liquid into the whole interior , using sublimation cold blasting peeling residual powder, clean cavity through inert gas delivery drying, preparation of the next batch operation.

[0022] Compared with the prior art, the beneficial effects of the present application are:

[0023] 1, in the present application, by the cooperation of screw grinding assembly, the whole utilizes the synergistic effect of low temperature plasma and inert gas, from the root, the oxidation decomposition of selenium-rich particles caused by high temperature and oxygen contact is blocked, the activity of functional ingredients is ensured, and through the triple action of screw shear, ultrasonic crushing and gap dynamic adjustment, the problem of sticky agglomeration of konjac powder is solved, and the adaptability of grinding of different hardness materials is realized, the consistency of finished product particle size is significantly improved, and the cold blasting cleaning method of liquid sublimation can completely remove the residues without disassembling the equipment, avoiding cross contamination.

[0024] 2, in the present application, under the cooperation of rotating permanent magnet assembly, the magnetic particles of the load selenium-rich particles are driven to diffuse directionally by using rotating magnetic field, so that the selenium-rich particles and konjac powder form a uniformly mixed material (solve the problem of uneven distribution of selenium), and the material uniformly controlled by magnetic control is screened by electric iris valve and frequency modulation vibration screen, then enters the screw grinding assembly through the cone flow guide cylinder, so that the selenium-rich particles in the material are uniformly dispersed under the cooperation of rotating permanent magnet assembly, and then the low temperature plasma generated by the plasma torch of the screw grinding assembly can cover each selenium-rich particle more uniformly, avoiding the cold quenching dead angle caused by local high selenium concentration, ensuring that the selenium-rich component activity is more stable, and the uniformly mixed material can reduce the agglomeration resistance of the screw during the operation process of the screw, so that the dynamic gap adjustment of the spacing adjustment component is more accurate (no need to adjust frequently due to local hard agglomeration), and the grinding efficiency and particle size consistency are improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the structure schematic view of main view for the grinding equipment of selenium-rich konjac milk tea powder block in the present application;

[0026] Figure 2It is the structure schematic diagram of side view in the grinding equipment for the selenium-rich konjak milk tea powder block of the present application;

[0027] Figure 3 It is the structure schematic diagram of inside section view of the main body in the grinding equipment for the selenium-rich konjak milk tea powder block of the present application;

[0028] Figure 4 It is the structure schematic diagram of the driving structure assembly in the grinding equipment for the selenium-rich konjak milk tea powder block of the present application;

[0029] Figure 5 It is the structure schematic diagram of the A place in the grinding equipment for the selenium-rich konjak milk tea powder block of the present application; Figure 4

[0030] Figure 6 It is the installation position structure schematic diagram of the inert gas adjusting assembly in the grinding equipment for the selenium-rich konjak milk tea powder block of the present application;

[0031] Figure 7 It is the structure schematic diagram of the rotary permanent magnet assembly in the grinding equipment for the selenium-rich konjak milk tea powder block of the present application;

[0032] Figure 8 It is the structure schematic diagram of the frequency modulation vibrating screen and the on-off valve in the grinding equipment for the selenium-rich konjak milk tea powder block of the present application;

[0033] Figure 9 It is the structure schematic diagram of the spiral grinding assembly in the grinding equipment for the selenium-rich konjak milk tea powder block of the present application;

[0034] Figure 10 It is the structure schematic diagram of the B place in the grinding equipment for the selenium-rich konjak milk tea powder block of the present application; Figure 9

[0035] ​​100, driving installation frame; 200, inert gas adjusting assembly; 201, inert gas chamber; 202, gas rising pipe; 203, gas guiding structure; 204, closed reflux pipe; 300, driving structure assembly; 301, synchronous pulley; 302, synchronous rod; 304, rolling ball; 305, primary grinding disc; 306, crushing element; 307, bevel gear structure; 308, frame bearing rod; 309, shock absorbing plate; 310, driving gear; 311, driving pinion; 400, feeding crushing cavity; 500, grinding magnetic cavity; 600, rotating permanent magnet assembly; 601, connecting frame; 602, annular rotating groove; 603, annular guide rail; 604, permanent magnet; 700, conical flow guide cylinder; 800, magnetic bead catcher; 900, spiral grinding assembly; 901, cavity; 902, spiral element; 903, spacing adjusting element; 904, miniature electromagnetic guide rod; 120, plasma jet; 130, magnetic particle injector; 140, side guiding cavity; 150, semicircular grinding cavity; 160, bearing grinding disc; 170, secondary grinding disc; 180, electric iris valve; 190, circulating guiding pipe; 210, discharge end; 220, frequency-modulated vibrating screen; 230, on-off valve. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0037] In the embodiments of the present application, reference is made to Figures 1-3 and Figure 6 As shown in the drawings: the grinding equipment for selenium-rich konjac milk tea powder blocks comprises a grinding magnetic cavity 500, a rotating permanent magnet assembly 600, and a spiral grinding assembly 900. The grinding magnetic cavity 500 is matched with an internal structure to form secondary grinding of materials and dispersion of magnetic loading of selenium-rich particles, and to realize efficient grinding and selenium-rich component retention through magnetic control mixing. The rotating permanent magnet assembly 600 generates a rotating magnetic field to drive the directional diffusion of magnetic particles in the konjac powder, so as to realize the uniform distribution of selenium-rich particles. The spiral grinding assembly 900 protects selenium-rich components through low-temperature plasma cold quenching, cooperates with ultrasonic vibration and spiral shearing to realize fine grinding, and has self-cleaning capability. The self-cleaning capability of the spiral grinding assembly 900 is realized by injecting liquid into the whole through an external liquid injection structure. (-78℃, 0.5MPa), the cold explosion effect during sublimation is used to strip the residual powder blocks without stopping and disassembling for cleaning.

[0038] In some embodiments, according to Figures 1-3 ​、 Figure 6 、 Figure 9 and Figure 10 As shown in the figure, the spiral grinding assembly 900 comprises a cavity 901, the inner wall of which can be sprayed with a polytetrafluoroethylene-nano silicon dioxide composite anti-sticking coating, a spiral part 902 is arranged inside the cavity 901, the spiral part 902 is composed of a central shaft and spiral blades, the surface of the spiral blades is provided with array type flow guide holes (inclined at 45°), which can form axial pushing force and radial shear force when rotating, thereby strengthening the grinding effect while pushing the materials forward, the top of the cavity 901 is symmetrically plugged with plasma nozzles 120 on both sides of the outside, the outlet of the plasma nozzles 120 extends to the inside of the cavity 901 (5-8 cm away from the top of the spiral blades), the spraying direction of the plasma nozzles 120 is consistent with the rotation direction of the spiral blades (forward spraying), which ensures that the low-temperature plasma can uniformly diffuse along the flow direction of the materials, the inside of the cavity 901 is staggered with ultrasonic transducers, the surface of the ultrasonic transducers is flush with the inner wall of the cavity 901 (to avoid material retention), which can produce high-frequency vibration to break up the material agglomerates, the surface of the cavity 901 is embedded with a temperature sensor for real-time monitoring of the temperature of the grinding area, the signal of the temperature sensor is transmitted to an external PLC controller through a shielding line to realize closed-loop control of the temperature, and the two sides of the cavity 901 are symmetrically provided with sliding sealing frames, which are internally provided with wear-resistant guide sleeves, the inside of the sliding sealing frame is slidingly connected with a spacing adjusting part 903, the spacing adjusting part 903 is provided in an arc plate structure (adapted to the curvature of the spiral blades), the two ends of which are embedded in the guide grooves of the sliding sealing frame, and the spacing adjusting part 903 can slide radially along the cavity 901, a micro electromagnetic guide rod 904 is arranged at the side end of the spacing adjusting part 903, which drives the adjusting part to move close to or away from the spiral blades through electromagnetic force, thereby realizing dynamic control of the grinding gap.

[0039] An inert gas adjusting assembly 200 is arranged on the outside of the side end of the cavity 901, the inert gas adjusting assembly 200 comprises an inert gas chamber 201, the inert gas chamber 201 is sleeved on the outside of the side end of the cavity 901, the inert gas chamber 201 is a double-layer jacket structure (the inner layer is attached to the outer wall of the cavity 901, and the outer layer is a heat preservation layer), which internally stores high-purity inert gas (such as argon), the top of the inert gas chamber 201 is connected with a gas rising pipe 202, the top of the gas rising pipe 202 is connected with a gas guide structure 203, which can accurately adjust the gas delivery amount through an internally built mass flow controller, the side end of the gas guide structure 203 is connected with a closed backflow pipe 204, forming a gas circulation loop to avoid waste of gas, the side end of the gas guide structure 203 is connected with a gas guide pipe, which is connected with the cavity 901, ensuring that the inert gas uniformly enters the grinding area at the spiral part 902.

[0040] According to the embodiment, specifically: first, the material (containing uniformly dispersed selenium-rich particles and konjac fine powder) treated by the magnetic grinding cavity 500 is introduced into the inlet end of the cavity 901 through the conical flow guide cylinder 700, and the spiral part 902 starts to rotate (in the clockwise direction) under the drive of the driving structure. The pushing force of the blades of the spiral part 902 makes the material move axially along the cavity 901. At this time, the spacing adjusting part 903 slowly approaches the spiral blade under the drive of the micro electromagnetic guide rod 904, reduces the grinding gap, and forms preliminary shearing and grinding on the material to break the small particle agglomerates.

[0041] At the same time, after the material enters the middle section of the cavity 901, the gas guide structure 203 is opened, argon is continuously injected into the inside of the cavity 901 through the gas guide pipe, and the air in the cavity is gradually replaced (to avoid oxidation of selenium-rich particles); at this time, the plasma jet head 120 is powered on, and argon is ionized into low-temperature plasma (temperature: 50-100°C) by using a radio frequency electric field (radio frequency electric field frequency: 13.56 MHz) and a power range (such as 50-200 W). The plasma diffuses to the entire grinding area with the argon flow, forms a cold quenching environment, and absorbs the friction heat generated by the spiral grinding by using the low-temperature characteristics of the plasma, and cooperates with the heat insulation effect of the inert gas to maintain the stability of the temperature inside the cavity 901.

[0042] In this process, the temperature sensor monitors the temperature inside the cavity in real time. If the temperature is higher than the set value, the external PLC controller increases the argon flow through the gas guide structure 203, and at the same time increases the power of the plasma jet head 120 to enhance the refrigeration effect. If the temperature is too low, the argon flow and the plasma power are reduced to ensure that the selenium-rich particles remain active at an appropriate temperature.

[0043] Then, the material continues to move with the spiral part 902 to the rear section of the cavity 901, and the external PLC controller starts the ultrasonic transducer. The high-frequency vibration (transmitted to the material through the wall of the cavity 901) makes the viscous colloid structure in the konjac powder be destroyed, and the selenium-rich particles are released from the colloid wrapping. At the same time, the micro-jet flow generated by the vibration acts on the surface of the particles, further refining the particle size of the material. At this time, the spacing adjusting part 903 dynamically adjusts the gap according to the grinding state of the material (such as judging the hardness of the material by the torque feedback of the spiral part 902). If the material is hard (the torque increases), the micro electromagnetic guide rod 904 drives the spacing adjusting part 903 to move away from the spiral part 902, so that the gap is appropriately increased to avoid overloading of the equipment. If the material is already fine (the torque decreases), the gap is reduced to strengthen the shearing effect and ensure uniform particle size of the finished product.

[0044] The fine ground material moves to the discharge end 210 of the cavity 901 along the screw 902, and enters the external quick-release screening device through the outlet of the discharge end 210. When a batch of material is ground, the screw 902 stops rotating, the spacing adjustment member 903 is reset to the maximum gap, the plasma jet 120 and the ultrasonic transducer are turned off, and then liquid is injected into the interior of the whole device by using the external liquid injection structure , so that the liquid rapidly sublimates after contacting the residual heat in the cavity 901, and the volume rapidly expands to produce a cold blasting effect, which peels off the sticky residues attached to the screw 902, the spacing adjustment member 903 and the inner wall of the cavity 901. The residues are discharged from the discharge end 210 along with the airflow, and the preliminary cleaning is completed.

[0045] Finally, the gas guide structure 203 re-introduces argon gas to sweep the residual CO2 and impurities in the cavity 901, ensuring that the next batch of material is not contaminated, and repeating the overall process.

[0046] The whole device utilizes the synergistic effect of low-temperature plasma and inert gas to fundamentally block the oxidative decomposition of selenium-rich particles caused by high temperature and oxygen contact, ensuring the activity of functional ingredients. Through the triple action of spiral shearing, ultrasonic crushing and dynamic gap adjustment, the problem of sticky agglomeration of konjac powder is solved, and the adaptability of grinding different hardness materials is realized, the consistency of the particle size of the finished product is significantly improved, and the liquid sublimation cold blasting cleaning method can completely remove the residues without disassembling the device, avoiding cross contamination.

[0047] In some embodiments, according to Figure 1 , Figure 2 and Figure 7 , the rotating permanent magnet assembly 600 is arranged outside the grinding magnetic cavity 500, and has a plurality of groups of permanent magnets 604 which rotate outside the grinding magnetic cavity 500 and do not contact each other.

[0048] The rotating permanent magnet assembly 600 further comprises a connecting frame 601, the bottom of the connecting frame 601 is provided with an annular rotating groove 602, the inside of the annular rotating groove 602 is provided with an annular guide rail 603, and the plurality of groups of permanent magnets 604 are connected with positioning sliding seats on the annular guide rail 603.

[0049] According to the present embodiment, specifically: first, when the material reaches the preset grinding degree in the grinding magnetic cavity 500, the external PLC controller sends a start instruction to the rotating permanent magnet assembly 600, so that the positioning sliding seat moves in a circular motion along the annular guide rail 603, and the plurality of groups of permanent magnets 604 rotate synchronously with the sliding seat (the rotating direction is consistent with the stirring direction inside the grinding magnetic cavity 500, avoiding magnetic field disorder).

[0050] ​As the permanent magnet 604 rotates, the magnetic field distribution around it dynamically changes with the position, forming a rotating magnetic field in the grinding magnetic cavity 500, that is, the magnetic field force is transmitted from the outer wall of the grinding magnetic cavity 500 to the center, acting on the magnetic particles in the grinding magnetic cavity 500.

[0051] When the permanent magnet 604 rotates to a certain position, the magnetic particles close to this side are attracted by the magnetic field and move towards the wall of the grinding magnetic cavity 500. When the permanent magnet 604 moves away, the magnetic field force weakens, and the particles diffuse to the center of the grinding magnetic cavity 500 under the flow of the material. The formed attraction and dispersion cycle makes the magnetic particles (selenium-rich particles) do spiral diffusion motion under the guidance of the rotating magnetic field, and gradually penetrate into each region of the konjac powder.

[0052] In this process, the motion trajectory of the magnetic particles is coordinated with the stirring direction of the material, and the bearing grinding disc 160 and the secondary grinding disc 170 in the grinding magnetic cavity 500 continuously rotate, bringing the whole material flow. The magnetic particles driven by the magnetic field force penetrate the material flow, break the stratification trend of selenium-rich particles and konjac powder, and achieve uniform mixing.

[0053] If the concentration of the material in the grinding magnetic cavity 500 is high (such as in the initial stage), the external PLC controller adjusts the rotating speed of the annular guide rail 603 to change the rotating speed of the permanent magnet 604, so that the magnetic field change frequency matches the material flow speed, avoiding the diffusion of the magnetic particles due to excessive resistance. When the material is gradually refined and the flowability is enhanced, the rotating speed of the annular guide rail 603 can be appropriately reduced to reduce energy consumption while maintaining the stable effect of the magnetic field force.

[0054] In addition, if it is detected that the selenium-rich particles are unevenly distributed in a local area inside the grinding magnetic cavity 500 (through subsequent screening data feedback), the magnetic field effect of this area is strengthened to improve the mixing effect. When the mixing time of the material in the grinding magnetic cavity 500 reaches the preset value, the external PLC controller issues a stop command, so that the annular guide rail 603 gradually stops, the permanent magnet 604 is reset to the initial position with the positioning slide, and then the electric iris valve 180 at the bottom of the grinding magnetic cavity 500 is opened. The mixed material enters the frequency-adjusted vibrating screen 220 for screening, and the rotating permanent magnet assembly 600 is in standby state, waiting for the processing instruction of the next batch of material.

[0055] Overall, the rotating magnetic field is used to drive the directional diffusion of magnetic particles, breaking through the limitations of traditional mechanical stirring, which is fully mixed in the outer layer and weak in the central area. The distribution deviation of selenium-rich particles in konjac powder is greatly reduced, and the loss of selenium-rich activity caused by high shear stirring is avoided. In view of the high viscosity characteristics of konjac powder, the diffusion motion of the magnetic particles is not affected by the viscosity of the material, and even in the high concentration state, it can still maintain efficient mixing, improving the uniformity of the mixing of selenium-rich particles and konjac powder.

[0056] In some embodiments, according to Figures 1-3 、 Figure 6 and Figure 8 , the top of the grinding magnetic cavity 500 is communicated with the feeding and crushing cavity 400, which is internally provided with a high-speed rotating crushing element 306, which can crush large blocks of selenium-rich konjac milk tea powder into small particles (to facilitate subsequent grinding), and the top of the feeding and crushing cavity 400 is provided with a feeding port (with a sealing cover), and the bottom is communicated with the semicircular grinding cavity 150 through an inclined guide plate, and the bottom end of the feeding and crushing cavity 400 is communicated with the semicircular grinding cavity 150, which is a semicircular groove structure (cooperating with the first-stage grinding disc 305), and the inner wall is processed with wear-resistant lines, and the side end is provided with a discharging port (aligned with the inside of the grinding magnetic cavity 500) for receiving the crushed materials from the feeding and crushing cavity 400 and performing preliminary grinding, and the inside of the grinding magnetic cavity 500 is provided with a bearing grinding disc 160, which is arranged on the inner wall of the grinding magnetic cavity 500 and is distributed with protruding grinding edges on the surface, and a second-stage grinding disc 170 (which is located above the bearing grinding disc 160 and can rotate, and the bottom is processed with a groove adapted to the bearing grinding disc 160), which forms a second-stage grinding structure, and the side wall of the grinding magnetic cavity 500 is provided with a side guide cavity 140 interface (communicated with the magnetic particle injector 130) for injecting the nano-magnetic core (particle size range such as 20-100nm) loaded with selenium-rich particles, and the inside bottom end of the grinding magnetic cavity 500 is provided with an electric iris valve 180, and the bottom of the electric iris valve 180 is provided with a frequency-modulated vibrating screen 220 for screening large-particle impurities in the material (impurities are discharged from the edge of the frequency-modulated vibrating screen 220, and qualified materials fall into the conical flow guide cylinder 700), and the inside bottom end of the conical flow guide cylinder 700 is provided with an on-off valve 230, which is used to intercept the material carrying magnetic particles, so as to facilitate the magnetic bead catcher 800 to capture the magnetic particles, and then to be opened, i.e. the magnetic bead catcher 800 is an arc-shaped electromagnet (the surface is covered with a magnetic guide plate), which can generate a strong magnetic field, and the bottom end is installed with an on-off valve 230 (which is a ball valve structure with automatic control function), which is used to temporarily intercept the material, and cooperates with the magnetic bead catcher 800 to complete the capture of the magnetic particles.

[0057] According to the present embodiment, specifically: first, the operator puts the selenium-rich konjac milk tea powder block into the feeding port of the feeding and crushing cavity 400, closes the sealing cover, and after starting the equipment, the crushing element 306 rotates at high speed, and the blade cuts and tears the powder block to break it into small particles, and the crushed particles fall into the semicircular grinding cavity 150 under the action of gravity, then the first-stage grinding disc 305 above the semicircular grinding cavity 150 rotates and cooperates with the semicircular grinding cavity 150 to preliminarily grind the crushed particles (by extrusion and friction to grind the particles to a finer state), and the preliminarily ground material enters the grinding magnetic cavity 500 through the discharging port.

[0058] After entering the grinding magnetic cavity 500, the material falls onto the supporting grinding disc 160. The secondary grinding disc 170 rotates, forming a shearing and grinding action with the supporting grinding disc 160, further grinding the material into a fine powder state. At the same time, the magnetic particle injector 130 injects selenium-rich particles loaded onto the cavity through the side guide cavity 140. The nano-magnetic core disperses the magnetic particles along with the material flow (i.e., it cooperates with the aforementioned rotating permanent magnet assembly 600). Then, the rotating permanent magnet assembly 600 outside the grinding magnetic cavity 500 is activated, and multiple sets of permanent magnets 604 rotate to generate a rotating magnetic field. This magnetic field drives the magnetic particles (loaded with selenium-rich particles) within the cavity to diffuse directionally in the material, ensuring uniform mixing of the selenium-rich particles and konjac powder. After mixing, the blades of the electric iris valve 180 gradually open, and the material enters the frequency-modulated vibrating screen 220 under gravity. Next, the frequency-modulated vibrating screen 220 is activated, using vibration to screen out large impurities from the material (impurities are discharged from the side). Qualified material (containing uniformly mixed selenium-rich particles) falls into the conical flow guide cylinder 700. At this time, the on / off valve 230 closes, and the material briefly remains in the conical flow guide cylinder 700, causing the magnetic bead trap 800 to be energized and generate a magnetic field, adsorbing residual magnetic particles (those not bound to the selenium-rich particles) in the material. After the nano-magnetic core is captured, the on / off valve 230 is opened, and the material enters the spiral mill assembly 900 for fine grinding. The captured magnetic particles are returned to the magnetic particle injector 130 through the circulation guide pipe 190.

[0059] In some embodiments, according to Figure 1 , Figure 4 and Figure 5 As shown, a drive structure assembly 300 is installed on the side end of the spiral component 902, and a drive mounting frame 100 is installed on the side end of the drive structure assembly 300. The drive mounting frame 100 is used to install the drive variable frequency motor. The drive structure assembly 300 includes a synchronous pulley 301. The bottom synchronous pulley center end of the synchronous pulley 301 is connected to the spiral component 902, and the top synchronous pulley center end of the synchronous pulley 301 is connected to a synchronous rod 302. A frame bearing rod 308 is sleeved on the outside of the synchronous rod 302.

[0060] The side end of the synchronous rod 302 is provided with a bevel gear structure 307, the connecting end of the synchronous rod 302 and the bevel gear structure 307 is provided with an electromagnetic blocker, the bevel gear structure 307 is composed of two bevel gears, one set of bevel gears is connected with a driving rod, the side end of the other set of bevel gears penetrates through the frame bearing rod 308 through a keying rod, and is connected with a driving pinion 311, the side end of the driving pinion 311 is provided with a shock absorbing plate 309, the driving pinion 311 is provided in two, the top end of the two driving pinions 311 is engaged and connected with a driving gear 310, the side end of the driving gear 310 is connected with a crushing piece 306, the bottom of the driving rod is connected with a rolling ball 304, the outside of the rolling ball 304 is sleeved with a secondary grinding disc 170, the top side of the driving rod is provided with a primary grinding disc 305, the primary grinding disc 305 and the semicircular grinding cavity 150 form a primary grinding hierarchical structure, and the secondary grinding disc 170 and the bearing grinding disc 160 form a secondary grinding hierarchical structure.

[0061] The outside of the side rod body of the frame bearing rod 308 is provided with a magnetic particle injector 130, the bottom of the magnetic particle injector 130 is communicated with a side guide conveying cavity 140, there is a gap between the primary grinding disc 305 and the magnetic grinding cavity 500, the side guide conveying cavity 140 is located at the gap, and is used for injecting magnetic particles into the inside of the magnetic grinding cavity 500.

[0062] The top of the magnetic particle injector 130 is communicated with a circulating conveying pipe 190, and the side end of the circulating conveying pipe 190 is communicated with a magnetic bead catcher 800.

[0063] The side end of the cavity 901 is provided with a discharging end 210, and the bottom end of the discharging end 210 is provided with an external quick-release vibrating screen structure, which is used for screening when discharging.

[0064] According to the embodiment, specifically: first, the driving frequency motor on the driving installation frame 100 is started, power is transmitted to the synchronous pulley 301 through the belt, the bottom synchronous pulley directly drives the spiral part 902 to rotate (provides conveying and grinding power for the spiral grinding assembly 900), the top synchronous pulley transmits power to the bevel gear structure 307 through the synchronous rod 302, at this time the electromagnetic interrupter is powered off (the clutch plate is engaged), the power is divided into two ways through the bevel gear, one way drives the horizontal keying rod to rotate, the other way drives the vertical drive rod to rotate, so that the horizontal keying rod drives the drive pinion 311 to rotate, through the engagement with the drive gear 310, the stirring part 306 rotates at high speed in the feeding stirring cavity 400, and the powder block is broken, at the same time, the vertical drive rod drives the top primary grinding disc 305 to rotate, cooperates with the semicircular grinding cavity 150, and performs primary grinding (extrusion refinement) on the broken particles, then the vertical drive rod continues to transmit power to the bottom rolling ball 304 and the secondary grinding disc 170, the rolling ball 304 rotates to roll the material falling into the grinding magnetic cavity 500, and the secondary grinding disc 170 cooperates with the bearing grinding disc 160 to complete secondary fine grinding, in this process, the magnetic particle injector 130 is started, and the magnetic particles loaded with selenium-rich particles are injected into the grinding magnetic cavity 500 through the side guide cavity 140, and are uniformly dispersed with the material.

[0065] Then, when the material completes secondary grinding and magnetic control mixing in the grinding magnetic cavity 500, the material enters the conical flow guide cylinder 700 through the electric iris valve 180 and the frequency-modulated vibrating screen 220, the on-off valve 230 is closed, the magnetic bead catcher 800 is powered on to adsorb residual magnetic particles, the captured particles flow back to the magnetic particle injector 130 through the circulating guide pipe 190, are re-injected into the grinding magnetic cavity 500 for recycling, and the material enters the spiral grinding assembly 900, then the spiral part 902 rotates under the drive of the synchronous pulley 301, and drives the material to move in the cavity 901, cooperates with the pitch adjusting part 903 to complete fine grinding, the ground material enters the external quick-release vibrating screen through the discharge end 210, and the impurities are removed through the vibrating screen, the finished product falls into the collection tank, and the impurities are discharged from the discharge port.

[0066] The whole process is synchronously driven by a set of motor and transmission structure to stir, two-stage grinding, spiral conveying and other multiple links, avoids energy waste caused by multiple motors running independently, has high transmission efficiency, and realizes continuous and efficient production of selenium-rich konjac milk tea powder.

[0067] The wiring diagram of the temperature sensor, the magnetic bead catcher 800, the micro electromagnetic guide rod 904 and the magnetic particle injector 130 in the present application belongs to the common knowledge in the art, the working principle is the known technology, the model is selected according to the actual use, so the control mode and the wiring arrangement of the temperature sensor, the magnetic bead catcher 800, the micro electromagnetic guide rod 904 and the magnetic particle injector 130 are not explained in detail.

[0068] Although the present application has been described in detail with reference to the foregoing embodiments, technical solutions recorded in the foregoing embodiments can be modified or some technical features can be replaced by equivalent features by those skilled in the art, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A milling apparatus for selenium-enriched konjac milk tea powder pieces, characterized by: It comprises a grinding magnetic cavity (500), a rotating permanent magnet assembly (600) and a spiral grinding assembly (900); The rotating permanent magnet assembly (600) is arranged outside the grinding magnetic cavity (500) and has a plurality of groups of permanent magnets (604), which rotate with the grinding magnetic cavity (500) and do not contact each other; The spiral grinding assembly (900) is arranged at the bottom of the grinding magnetic cavity (500) and is communicated with the grinding magnetic cavity (500) through a conical flow guide cylinder (700), and magnetic bead traps (800) are symmetrically arranged on both sides of the conical flow guide cylinder (700) and used for capturing magnetic particles injected into the grinding magnetic cavity (500); The spiral grinding assembly (900) comprises a cavity (901), a spiral part (902) is arranged in the cavity (901), plasma torches (120) are symmetrically plugged on both sides of the top of the cavity (901), ultrasonic transducers are staggered distributed in the cavity (901), temperature sensors are inlaid on the surface of the cavity (901), sliding seal frames are symmetrically arranged on both sides of the cavity (901), a spacing adjusting part (903) is slidably connected in the sliding seal frame, and a micro electromagnetic guide rod (904) is arranged on the side end of the spacing adjusting part (903). A bearing grinding disc (160) is arranged in the grinding magnetic cavity (500), and a secondary grinding disc (170) is rotatably arranged above the bearing grinding disc (160).

2. The flour milling apparatus for the selenium-enriched konjac milk tea powder block according to claim 1, characterized in that: A feeding crushing cavity (400) is communicated with the top of the grinding magnetic cavity (500), a semicircular grinding cavity (150) is communicated with the bottom end of the feeding crushing cavity (400), an electric iris valve (180) is arranged at the bottom end in the grinding magnetic cavity (500), a frequency-modulated vibrating screen (220) is arranged at the bottom of the electric iris valve (180), and an on-off valve (230) is arranged at the bottom end in the conical flow guide cylinder (700) and used for intercepting materials carrying magnetic particles, so that the magnetic bead traps (800) can capture the magnetic particles and then be opened.

3. The flour milling apparatus for the selenium-enriched konjac milk tea powder block according to claim 2, characterized in that: An inert gas adjusting assembly (200) is arranged outside the side end of the cavity (901), the inert gas adjusting assembly (200) comprises an inert gas chamber (201), the inert gas chamber (201) is sleeved outside the side end of the cavity (901), a gas rising pipe (202) is communicated with the top of the inert gas chamber (201), a gas guide structure (203) is communicated with the top of the gas rising pipe (202), a closed backflow pipe (204) is communicated with the side end of the gas guide structure (203), a gas guide pipe is communicated with the side end of the gas guide structure (203), and the gas guide pipe is communicated with the cavity (901).

4. The milling apparatus for the selenium-enriched konjac milk tea powder block according to claim 3, characterized in that: The side end of the spiral piece (902) is provided with a driving structure assembly (300), the side end of the driving structure assembly (300) is provided with a driving installation frame (100) for installing a driving variable frequency motor, the driving structure assembly (300) comprises a synchronous pulley (301), the bottom synchronous pulley center end of the synchronous pulley (301) is connected with the spiral piece (902), the top synchronous pulley center end of the synchronous pulley (301) is connected with a synchronous rod (302), the outside of the synchronous rod (302) is sleeved with a frame bearing rod (308).

5. The flour milling apparatus for the selenium-enriched konjac milk tea powder block according to claim 4, characterized in that: The side end of the synchronous rod (302) is provided with a bevel gear structure (307), the connecting end of the synchronous rod (302) and the bevel gear structure (307) is provided with an electromagnetic blocker, the bevel gear structure (307) is composed of two bevel gears, one group of bevel gears is connected with a driving rod, the side end of the other group of bevel gears penetrates the frame bearing rod (308) through a keying rod and is connected with a driving pinion (311), the side end of the driving pinion (311) is provided with a shock absorbing plate (309), the driving pinion (311) is provided with two, the top end of the two driving pinions (311) is engaged and connected with a driving gear (310), the side end of the driving gear (310) is connected with a stirring piece (306), the bottom of the driving rod is connected with a rolling ball (304), the second stage grinding disc (170) is sleeved outside the rolling ball (304), the top side of the driving rod is provided with a first stage grinding disc (305), the first stage grinding disc (305) and the semicircular grinding cavity (150) form a first stage grinding hierarchical structure, the second stage grinding disc (170) and the bearing grinding disc (160) form a second stage grinding hierarchical structure.

6. The flour milling apparatus for the selenium-enriched konjac milk tea powder block according to claim 5, characterized in that: The rotating permanent magnet assembly (600) further comprises a connecting frame (601), the bottom of the connecting frame (601) is provided with an annular rotating groove (602), the inside of the annular rotating groove (602) is provided with an annular guide rail (603), a plurality of groups of the permanent magnets (604) are connected with the positioning sliding seats on the annular guide rail (603).

7. The milling apparatus for the selenium-enriched konjac milk tea powder block according to claim 6, characterized in that: The outside of the frame bearing rod (308) is provided with a magnetic particle injector (130) on one side of the rod body, the bottom of the magnetic particle injector (130) is communicated with a side guide conveying cavity (140), there is a gap between the first stage grinding disc (305) and the grinding magnetic cavity (500), the side guide conveying cavity (140) is located at the gap and is used for injecting magnetic particles into the inside of the grinding magnetic cavity (500).

8. The milling apparatus for the selenium-enriched konjac milk tea powder block according to claim 7, characterized in that: The top of the magnetic particle injector (130) is communicated with a circulating guide conveying pipe (190), the side end of the circulating guide conveying pipe (190) is communicated with a magnetic bead catcher (800).

9. The flour milling apparatus for the selenium-enriched konjac milk tea powder block according to claim 8, characterized in that: The side end bottom of the cavity (901) is provided with a discharge end (210), the bottom end of the discharge end (210) is provided with an external quick-release type vibrating screen structure for screening when discharging.

10. A method for milling equipment for selenium-enriched konjac milk tea powder pieces, characterized by, The flour grinding equipment for selenium-rich konjac milk tea powder blocks of claim 9 is used, comprising the following steps: S1, first, the selenium-rich konjac milk tea powder block is initially broken by the stirring element (306) of the feeding and stirring cavity (400), and then passes through the first grinding disc (305) and the semi-circular grinding cavity (150), the second grinding disc (170) and the bearing grinding disc (160) to complete two-stage grinding, and the magnetic particles loaded with selenium-rich particles are injected into the grinding magnetic cavity (500) through the magnetic particle injector (130) at the same time; S2, then, the permanent magnet (604) of the rotating permanent magnet assembly (600) rotates to generate a rotating magnetic field, which drives the magnetic particles to diffuse directionally in the material, the mixture is screened by the electric iris valve (180) and the frequency-modulated vibrating screen (220), and when the mixture passes through the conical flow guide cylinder (700), the on-off valve (230) is closed, the magnetic bead catcher (800) captures the residual magnetic particles, and the mixture is recycled through the circulating guide pipe (190), then the on-off valve is opened, and the material enters the spiral grinding assembly (900); S3, then, the spiral element (902) is rotated to convey the material, the inert gas adjusting assembly (200) introduces argon, the plasma jet (120) is ionized to generate low-temperature plasma, the temperature of the low-temperature plasma is-10℃-20℃, the temperature is controlled in real time by using an external PLC controller, the ultrasonic transducer cooperates with the spiral shear force to break the agglomerates, the micro electromagnetic guide rod (904) drives the spacing adjusting element (903) to dynamically adjust the grinding spacing, and fine grinding is completed: S4, then, the material is discharged through the discharge end (210), and the finished product is screened by an external vibrating screen; after each batch is completed, liquid carbon dioxide is injected into the whole interior, the residual powder block is peeled off by sublimation cold blasting, the cleaned cavity is dried by inert gas guide, and the next batch operation is prepared.

Images