Matcha micro-nano-scale processing equipment and technology with ultrahigh pressure cooperating with low-temperature crushing

Abstract

The invention discloses micro-nano processing equipment and technology for matcha with ultrahigh pressure cooperating with low-temperature smashing, and belongs to the technical field of grinding processing device.The equipment comprises a shell, a control panel is fixedly installed on the outer wall of the left side of the shell, and temperature sensors are fixedly installed on the two sides of the interior of the shell; two micro fans are fixedly mounted at the bottom end of the interior of the shell, fixing frames are arranged on the sides, away from each other, of the two micro fans, protective screen frames are fixedly arranged at frame openings of the fixing frames, radiators are mounted on the sides, close to each other, of the two protective screen frames, and semiconductor coolers are mounted on the sides, close to each other, of the two radiators. Through the structural design of the shell, the temperature sensor, the semiconductor cooler, the micro fan, the protective screen frame, the radiator and the fixing frame, the temperature of the inner cavity of the shell can be reasonably controlled within a certain interval range, so that the nutritional ingredients of matcha can be effectively guaranteed, volatilization of aroma substances can be reduced, and the matcha grinding effect is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flour processing devices, in particular to a super-high-pressure and low-temperature grinding tea powder micro-nano processing device and process. BACKGROUND

[0002] Tea powder, originating from the Sui and Tang dynasties in China, is made by collecting tender tea leaves in spring, steaming and fixing the color, and then baking and drying the tea cake before grinding it into powder. The tea powder is then poured into a bowl and boiled water is added. The tea is stirred with a tea whisk to create foam, and then it is ready to be drunk. Since ancient times, many poets have written poems praising tea powder. The poem "Biyun Yinfeng Chui Bu Duan, Baihua Fuguang Ning Wan Mian" by Lu Tong of the Tang Dynasty praises tea powder. Tea powder is a natural food with high nutritional value, retaining over 500 components of tea leaves, including five major nutrients: protein, fat, sugar, vitamins, and minerals. It is rich in nutrients and has excellent taste, and is deeply loved by people.

[0003] According to the search, the Chinese patent with the patent publication number CN213611668U discloses a grinding and feeding integrated device for tea powder processing, which includes a base and a conveying box. The top of the base is provided with a grinding groove, and the top of the base is movably connected with a cover plate. The top of the cover plate is fixedly connected with a first motor. The output shaft of the first motor drives the grinding disc to rotate, which grinds the tea leaves in the grinding groove. After grinding, the cylinder drives the linkage plate and the cover plate to move upward, and the grinding disc moves upward from the inner cavity of the grinding groove, which facilitates the collection of tea powder in the grinding groove. At this time, the output shaft of the second motor drives the feeding auger to rotate, and the tea leaves in the hopper cavity will follow the rotation of the feeding auger and be discharged from the discharge pipe into the inner cavity of the grinding groove, completing the feeding. The existing grinding device solves the problem that tea leaves need to be manually fed during grinding, thus reducing the workload.

[0004] However, the above design still has some drawbacks. In the above design, the tea powder is ground at room temperature, which not only reduces the nutritional components of the tea powder, but also increases the volatilization of aroma substances, resulting in poor grinding effect.

[0005] The above information disclosed in the background of the application is only used to increase the understanding of the background of the application, and should not be regarded as acknowledging or implying in any form that the information constitutes prior art known to those skilled in the art. SUMMARY

[0006] The present application aims to provide a super-high-pressure and low-temperature grinding tea powder micro-nano processing device and process to solve the problems raised in the background.

[0007] In order to achieve the above object, the present application provides the following technical scheme: a kind of superhigh pressure cooperates with low temperature pulverization's Matcha micro-nano processing equipment, including shell, control panel is fixedly installed on the left side outer wall of the shell, temperature sensor is fixedly installed on both sides in the shell, two micro fans are fixedly installed at the bottom in the shell, the side of the two micro fans away from each other is provided with fixed frame, the frame mouth of the fixed frame is fixedly provided with protective net frame, the side of the two protective net frames close to each other is equipped with radiator, the side of the two radiators close to each other is equipped with semiconductor refrigerator, the inside top of the shell is fixedly provided with inner shell, the inside of the inner shell is fixedly provided with grinding cavity, transmission motor is fixedly installed at the center of the top of the shell, the output of the transmission motor is fixedly connected with grinding wheel, and grinding wheel is rotatably arranged in the inside of grinding cavity, a plurality of communicating material guiding holes are formed in the bottom of the grinding cavity, and the bottom of the material guiding hole is provided with a communicating discharge pipe.

[0008] As a further scheme of the application: the two sides of the top of the shell are fixedly connected with support rods, and the top of the support rod is fixedly connected with a pulverizer box.

[0009] As a further scheme of the application: the top of the pulverizer box is fixedly provided with a feed pipe communicating with its interior, and a limit plug is movably arranged at the pipe opening of the feed pipe.

[0010] As a further scheme of the application: the right side of the pulverizer box is fixedly connected with a mounting frame, the right side of the mounting frame is fixedly installed with a pulverizer motor, the output end of the pulverizer motor is fixedly connected with a second rotating rod, and the left side of the second rotating rod is fixedly connected with a second transmission rod.

[0011] As a further scheme of the application: a second tooth disc is fixedly sleeved on the outer wall of the second rotating rod, a first tooth disc is engagedly connected to the top of the second tooth disc, a first rotating rod is fixedly connected in the inside of the first tooth disc, a first transmission rod is fixedly connected to the left side of the first rotating rod, and a plurality of crushing blades are fixedly arranged on the outer walls of the first transmission rod and the second transmission rod.

[0012] As a further scheme of the application: two communicating material guiding pipes are fixedly arranged at the bottom of the pulverizer box, and one end of the material guiding pipe extends into the inside of the grinding cavity, and a discharge valve is installed at the upper end of the material guiding pipe.

[0013] A kind of superhigh pressure cooperates with low temperature pulverization's Matcha micro-nano processing process, and its process steps are:

[0014] S1, shading planting and steam fixation;

[0015] S2, liquid nitrogen quick freezing pretreatment;

[0016] S3, synergistic comminution of ultra-high pressure (100-600 MPa) and low temperature (-20℃ to 5℃);

[0017] S4, ultra-high pressure homogenization and low-temperature vacuum spray drying.

[0018] Preferably, in the process of ultra-high pressure comminution, a three-dimensional collision air jet nozzle is used, the nozzle outlet velocity is ≥300 m / s, and a supersonic flow field is formed.

[0019] Preferably, the matcha powder has a particle size D90≤500 nm, a specific surface area≥6.8 m 2 / g, and a tea polyphenol retention rate≥85%.

[0020] In step S4, low-temperature vacuum spray drying (inlet air temperature 60-80℃, vacuum degree 0.85-0.90 MPa) is used to obtain a micro-nano matcha powder with a water content≤4.5%, a particle size D90≤500 nm, and a specific surface area≥6.8 m 2 / g.

[0021] The present application has the following beneficial effects:

[0022] (1) Through the structural design of the shell, temperature sensor, semiconductor cooler, micro fan, protective net frame, radiator and fixing frame, the temperature in the cavity of the shell can be reasonably controlled within a certain range, thereby effectively ensuring the nutritional components of matcha and reducing the volatilization of aroma substances, improving the grinding effect of matcha, and solving the problem that when matcha is ground, it is processed at room temperature, which not only reduces the nutritional components of matcha, but also increases the volatilization of aroma substances, and the grinding effect is poor.

[0023] (2) Through the structural design of the crushing box, limiting plug, feeding pipe, mounting frame, crushing motor, transmission motor, guide pipe, discharge valve, inner shell, grinding wheel, guide hole, discharge pipe, grinding cavity, crushing blade, first transmission rod, second transmission rod, first rotating rod, first tooth disc, second rotating rod and second tooth disc, the matcha can be pre-mixed and crushed before grinding, which is more conducive to the grinding of matcha raw materials in the later stage, thereby improving the practicality of the device. DETAILED DESCRIPTION

[0024] Figure 1 is a three-dimensional partial schematic view of the overall structure of the present application;

[0025] Figure 2 is a schematic view of the main internal partial structure of the present application;

[0026] Figure 3 is a schematic view of the enlarged partial structure at A of the present application;

[0027] Figure 4 Amplification local structure schematic diagram of B of the application;

[0028] Figure 5 Process flow chart of the application.

[0029] In the figure: 1, crushing box; 2, support rod; 3, control panel; 4, limit plug; 5, feeding pipe; 6, mounting frame; 7, crushing motor; 8, transmission motor; 9, shell; 10, guide pipe; 11, discharge valve; 12, inner shell; 13, grinding wheel; 14, guide hole; 15, discharge pipe; 16, grinding cavity; 17, temperature sensor; 18, crushing blade; 19, first transmission rod; 20, second transmission rod; 21, first rotating rod; 22, first tooth disc; 23, second rotating rod; 24, second tooth disc; 25, semiconductor refrigerator; 26, micro fan; 27, protective net frame; 28, radiator; 29, fixed frame. DETAILED DESCRIPTION

[0030] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be described in detail below in conjunction with the drawings, and the description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present application.

[0031] It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0032] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation and cannot be understood as indicating or implying relative importance.

[0033] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0034] In the description of the present application, it is also necessary to explain that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] Please refer to Figures 1-4 , the present application provides an embodiment: a kind of superhigh pressure cooperates low temperature pulverization's Matcha micro-nano processing equipment, including shell 9, control panel 3 is fixedly installed on the left side outer wall of shell 9, temperature sensor 17 is fixedly installed on both sides in the shell 9, two micro fans 26 are fixedly installed at the bottom end in the shell 9, the side of two micro fans 26 away from each other is provided with fixed frame 29, protective screen frame 27 is fixedly arranged at the frame mouth of fixed frame 29, the side of two protective screen frames 27 close to each other is installed with radiator 28, the side of two radiators 28 close to each other is installed with semiconductor refrigerator 25;

[0036] Specifically, as shown in Figure 1 , Figure 2 and Figure 4 , in use, in the process of grinding Matcha, the temperature of the inner cavity of the shell 9 can be cooled by the semiconductor refrigerator 25, and the temperature of the inner cavity of the shell 9 can be quickly reduced by the wind power generated by the rotation of the micro fan 26, and the temperature of the inner cavity of the shell 9 can be detected in real time by the temperature sensor 17, when the temperature in the cavity reaches the pre-set minimum value, the signal is transmitted to the peripheral controller, the peripheral controller controls the semiconductor refrigerator 25 and the micro fan 26 to close, when the temperature in the cavity reaches the pre-set maximum value, the signal is transmitted to the peripheral controller, the peripheral controller controls the semiconductor refrigerator 25 and the micro fan 26 to start, by reasonably controlling the temperature of the inner cavity of the shell 9 within a certain range, the nutritional components of Matcha can be effectively guaranteed and the volatilization of aroma substances can be reduced, the grinding effect of Matcha can be improved, and the problem of poor grinding effect when grinding Matcha at room temperature is solved.

[0037] The inner top of the shell 9 is fixedly provided with an inner shell 12, the inner part of the inner shell 12 is fixedly provided with a grinding cavity 16, a transmission motor 8 is fixedly installed at the center of the top of the shell 9, the output end of the transmission motor 8 is fixedly connected with a grinding wheel 13, and the grinding wheel 13 is rotatably arranged in the inner part of the grinding cavity 16, a plurality of communicating material guiding holes 14 are formed in the bottom of the grinding cavity 16, the bottom of the material guiding hole 14 is provided with a communicating discharge pipe 15, the two sides of the top of the shell 9 are fixedly connected with supporting rods 2, the top of the supporting rod 2 is fixedly connected with a crushing box 1, the top of the crushing box 1 is fixedly provided with a feeding pipe 5 which is in communication with the inner part thereof, a limiting plug 4 is movably arranged at the pipe opening of the feeding pipe 5, the right side of the crushing box 1 is fixedly connected with a mounting frame 6, the right side of the mounting frame 6 is fixedly installed with a crushing motor 7, the output end of the crushing motor 7 is fixedly connected with a second rotating rod 23, the left side of the second rotating rod 23 is fixedly connected with a second transmission rod 20, a second tooth disc 24 is fixedly sleeved on the outer wall of the second rotating rod 23, the top of the second tooth disc 24 is meshingly connected with a first tooth disc 22, the inner part of the first tooth disc 22 is fixedly connected with a first rotating rod 21, the left side of the first rotating rod 21 is fixedly connected with a first transmission rod 19, a plurality of crushing blades 18 are fixedly arranged on the outer walls of the first transmission rod 19 and the second transmission rod 20, the bottom of the crushing box 1 is fixedly provided with two communicating material guiding pipes 10, and one end of the material guiding pipe 10 extends into the inner part of the grinding cavity 16, and a discharge valve 11 is installed at the upper end of the material guiding pipe 10;

[0038] Specifically, as shown in Figure 1 、 Figure 2 and Figure 3 , when the matcha needs to be ground, the limiting plug 4 is opened, then the appropriate amount of matcha raw materials is added into the crushing box 1, then the limiting plug 4 is covered, then the crushing motor 7 is started, the output end of the crushing motor 7 drives the second rotating rod 23 to rotate, the second rotating rod 23 drives the second transmission rod 20 to rotate, and the second rotating rod 23 drives the second tooth disc 24 to rotate, the second tooth disc 24 drives the first rotating rod 21 to rotate through the first tooth disc 22, the first rotating rod 21 drives the first transmission rod 19 to rotate, and the first transmission rod 19 and the second transmission rod 20 drive the crushing blades 18 to rotate, so that the matcha raw materials in the crushing box 1 are stirred and crushed, which is more conducive to the grinding of the matcha raw materials in the later stage, when the stirring and crushing of the matcha raw materials are completed, the discharge valve 11 is opened, then the crushed matcha raw materials are conveyed into the grinding cavity 16 through the material guiding pipe 10, then the output end of the transmission motor 8 drives the grinding wheel 13 to rotate, so that the matcha in the grinding cavity 16 is ground, and the ground matcha passes through the material guiding hole 14 and is finally discharged through the discharge pipe 15, and the user can collect it.

[0039] A matcha micro-nano processing process of ultrahigh pressure and low temperature crushing is provided, and the process steps are as follows:

[0040] S1, shading cultivation and steam fixation;

[0041] S2, liquid nitrogen quick-freezing pretreatment;

[0042] S3, synergistic comminution of ultra-high pressure (100-600 MPa) and low temperature (-20℃ to 5℃);

[0043] S4, ultra-high pressure homogenization and low-temperature vacuum spray drying.

[0044] Preferably, in the ultra-high pressure comminution process, a three-dimensional collision air jet nozzle is used, with a nozzle outlet speed ≥ 300 m / s, forming a supersonic flow field.

[0045] Preferably, the matcha powder has a particle size D90 ≤ 500 nm, a specific surface area ≥ 6.8 m 2 / g, and a tea polyphenol retention rate ≥ 85%.

[0046] In which step S4 uses low-temperature vacuum spray drying (inlet air temperature 60-80℃, vacuum degree 0.85-0.90 MPa) to produce a micro-nano grade matcha powder with a water content ≤ 4.5%, a particle size D90 ≤ 500 nm, and a specific surface area ≥ 6.8 m 2 / g.

[0047] Example 1

[0048] Raw material treatment: pick fresh leaves of "Longjing 43" treated with shading, steam fixation at 65℃ for 3 minutes, and liquid nitrogen quick-freezing to -196℃.

[0049] Comminution process:

[0050] Pre-crushing: 150 MPa pressure treatment for 5 minutes, chamber temperature -10℃.

[0051] Nanofication: 350 MPa pressure combined with -18℃ low temperature, treatment for 12 minutes, nitrogen flow 60 m 3 / h.

[0052] Post-treatment: homogenization pressure 130 MPa, spray drying inlet air temperature 70℃, to produce matcha powder D90 = 380 nm, tea polyphenol content 15.2%, total bacterial count 8 CFU / g.

[0053] Comparative Example 1 (traditional stone mill process)

[0054] Raw material treatment: conventional cultivation of fresh leaves, steam fixation at 100℃ for 30 seconds.

[0055] Comminution process: stone mill grinding to 800 mesh (D90 = 18 μm).

[0056] Results: tea polyphenol content 10.5%, total bacterial count 2.1 x 10 3CFU / g, dissolution time > 5 minutes.

[0057]

[0058] According to the above table, it can be concluded that the tea polyphenol and theanine retention rate of the present application is higher, and the dissolution time is shorter.

[0059] Working principle: in the application, when the matcha needs to be ground, the limiting plug 4 is opened, then the appropriate amount of matcha raw materials is added into the crushing box 1, then the limiting plug 4 is covered, then the crushing motor 7 is started, the output end of the crushing motor 7 drives the second rotating rod 23 to rotate, the second rotating rod 23 drives the second transmission rod 20 to rotate, and the second rotating rod 23 drives the second gear disc 24 to rotate, the second gear disc 24 drives the first rotating rod 21 to rotate through the first gear disc 22, the first rotating rod 21 drives the first transmission rod 19 to rotate, and the first transmission rod 19 and the second transmission rod 20 drive the crushing blade 18 to rotate, thereby stirring and crushing the matcha raw materials in the crushing box 1, and then more conducive to the grinding of the matcha raw materials in the later stage, when the matcha raw materials are stirred and crushed, the discharge valve 11 is opened, then the crushed matcha raw materials are transported into the grinding cavity 16 through the material guide pipe 10, then the output end of the transmission motor 8 drives the grinding wheel 13 to rotate, thereby grinding the matcha in the grinding cavity 16, and the ground matcha passes through the material guide hole 14 and is finally discharged through the discharge pipe 15, which can be collected by the user, and secondly, during the grinding of the matcha, the inner cavity temperature of the shell 9 can be cooled by the semiconductor refrigerator 25, and the temperature of the inner cavity of the shell 9 can be detected in real time by the temperature sensor 17, when the temperature in the cavity reaches the pre-set minimum value, the signal is transmitted to the external controller, the external controller controls the semiconductor refrigerator 25 and the micro fan 26 to close, when the temperature in the cavity reaches the pre-set maximum value, the signal is transmitted to the external controller, the external controller controls the semiconductor refrigerator 25 and the micro fan 26 to start, by reasonably controlling the temperature of the inner cavity of the shell 9 within a certain range, the nutritional components of the matcha can be effectively guaranteed, the volatilization of the aroma substances can be reduced, and the grinding effect of the matcha can be improved.

[0060] The standard parts used in the invention document can be purchased from the market, and can be ordered according to the description and drawings, and the specific connection mode of each part adopts the conventional means such as bolt, rivet and welding in the prior art, the mechanical, parts and equipment adopt the conventional type in the prior art, and the electrical elements appearing in the invention are externally connected to the power supply and control switch during use, the control mode is automatically controlled through the controller, the control circuit of the controller can be realized through simple programming by the person skilled in the art, and it belongs to the common knowledge in the art, so the control mode and circuit connection of the invention will not be explained in detail, and the external controller mentioned in the specification can control the electrical elements mentioned in the specification, and the external controller is a conventional known device.

[0061] It should be noted that in this text, the term "includes", "contains" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or device.

[0062] The principles and embodiments of the application are described in this text by applying specific examples, and the above examples are only used to help understand the method of the application and its core idea. The above is only the preferred embodiment of the application, and it should be pointed out that due to the limitation of language expression, there are infinite specific structures, and for ordinary skilled persons in the art, some improvements, decorations or changes can be made without departing from the principles of the application, and the above technical features can be combined in an appropriate way; these improvements, decorations, changes or combinations, or the application of the invention concept and technical scheme to other occasions without improvement, shall be regarded as the protection scope of the application.

Claims

1. A super-high pressure and low-temperature pulverization synergistic matcha micro-nano processing equipment, comprising a shell (9), characterized in that: The left outer wall of the shell (9) is fixedly installed with a control panel (3), both sides of the inside of the shell (9) are fixedly installed with temperature sensors (17), and the bottom end of the inside of the shell (9) is fixedly installed with two micro fans (26).

2. The super-high pressure and low-temperature comminution combined matcha micro-nano processing equipment according to claim 1, characterized in that: Both sides of the top of the shell (9) are fixedly connected with support rods (2), and the top of the support rod (2) is fixedly connected with a crushing box (1).

3. The super-high pressure and low-temperature comminution combined matcha micro-nano processing equipment according to claim 2, characterized in that: The top of the crushing box (1) is fixedly provided with a feed pipe (5) in communication with the inside thereof, and the pipe opening of the feed pipe (5) is movably provided with a limiting plug (4).

4. The super-high-pressure synergic low-temperature pulverizing matcha micro-nano processing equipment according to claim 3, characterized in that: The right side of the crushing box (1) is fixedly connected with a mounting frame (6), and the right side of the mounting frame (6) is fixedly installed with a crushing motor (7).

5. The ultra-high pressure synergic low-temperature pulverized matcha micro-nano processing equipment according to claim 4, characterized in that: The outer wall of the second rotating rod (23) is fixedly sleeved with a second tooth disc (24), the top of the second tooth disc (24) is meshingly connected with a first tooth disc (22), the inside of the first tooth disc (22) is fixedly connected with a first rotating rod (21), the left side of the first rotating rod (21) is fixedly connected with a first transmission rod (19), and a plurality of crushing blades (18) are fixedly arranged on the outer walls of the first transmission rod (19) and the second transmission rod (20).

6. The ultra-high pressure synergic low-temperature pulverized matcha micro-nano processing equipment according to claim 5, characterized in that: The bottom of the crushing box (1) is fixedly provided with two communicating guide pipes (10), and one end of the guide pipe (10) extends into the grinding cavity (16), and the upper end of the guide pipe (10) is provided with a discharge valve (11).

7. A super-high pressure synergistic cryogenic pulverization processing technology for matcha micro-nano grade, characterized by: The process steps are: S1, shading planting and steam fixation; S2, liquid nitrogen quick freezing pretreatment; S3, superhigh pressure and low temperature collaborative crushing; S4, superhigh pressure homogenization and low temperature vacuum spray drying.

8. The super-high pressure synergic low-temperature pulverization processing technology for matcha micro-nano grade according to claim 7, characterized in that: In the superhigh pressure crushing process, a three-dimensional collision type air jet nozzle is adopted, the nozzle outlet speed is greater than or equal to 300 m / s, and a supersonic flow field is formed.

9. The super-high pressure synergic low-temperature pulverization processing technology for matcha micro-nano grade according to claim 7, characterized in that: The matcha powder has a particle size D90≤500 nm, a specific surface area≥6.8 m 2 / g, and a tea polyphenol retention rate≥85%.

10. The super-high pressure synergic low-temperature pulverization processing technology for matcha micro-nano grade according to claim 7, characterized in that: In step S4, low-temperature vacuum spray drying (inlet temperature 60-80℃, vacuum degree 0.85-0.90MPa) is used to obtain a micro-nano grade matcha powder with a water content of ≤4.5%, a D90 particle size of ≤500nm, and a specific surface area of ≥6.8m 2 / g.

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