阅读说明：本技术 一种物理提取茶色素的高纯度分离方法及其设备 (High-purity separation method and equipment for physically extracting tea pigment ) 是由 戴鹏 于 2021-09-08 设计创作，主要内容包括：本发明公开了一种物理提取茶色素的高纯度分离方法,包括以下步骤；S1、原料预处理；S2、茶色素提取；S3、分离纯化；S4、浓缩干燥；还公开了一种物理提取茶色素的高纯度分离设备,包括茶叶粉碎机、超声波提取罐、中控箱以及设置于超声波提取罐上的安全阀,所述超声波提取罐下端排料口通过接管与负压发生器连通,所述茶叶粉碎机的出口端与超声波提取罐的进料口连通；所述超声波提取罐的罐体侧壁上环设有多组温度传感带,每条温度传感带相近区域内设置有电热元件。该方法,通过对料液比、超声提取的温度以及超声提取的时间进行细化,提升茶色素的提取率,并且该设备可保证罐体内部提取液均匀上升到设定温度,保证提取效率。(The invention discloses a high-purity separation method for physically extracting tea pigment, which comprises the following steps; s1, pretreating raw materials; s2, extracting tea pigment; s3, separating and purifying; s4, concentrating and drying; the high-purity separation equipment for physically extracting the tea pigment comprises a tea grinder, an ultrasonic extraction tank, a central control box and a safety valve arranged on the ultrasonic extraction tank, wherein a discharge outlet at the lower end of the ultrasonic extraction tank is communicated with a negative pressure generator through a connecting pipe, and the outlet end of the tea grinder is communicated with a feed inlet of the ultrasonic extraction tank; the side wall of the ultrasonic extraction tank is provided with a plurality of groups of temperature sensing belts in a ring manner, and an electric heating element is arranged in a region close to each temperature sensing belt. According to the method, the material-liquid ratio, the ultrasonic extraction temperature and the ultrasonic extraction time are refined, so that the extraction rate of tea pigment is improved, the equipment can ensure that the extracting solution in the tank body uniformly rises to a set temperature, and the extraction efficiency is ensured.)

1. A high-purity separation method for physically extracting tea pigment is characterized by comprising the following steps: comprises the following steps;

s1, raw material pretreatment:

A. selecting fresh tea leaves, removing old leaves, cleaning with fresh water to remove impurities and dust on the leaves, and naturally airing in the shade for later use;

B. tea curing: adding the dried tea leaves into a fixation machine for fixation, transferring the tea leaves into a fine twisting machine for reciprocating twisting until the tea leaves are curled into strips, taking the tea leaves out of the fine twisting machine, naturally drying the tea leaves, putting the tea leaves into a fermentation box, simultaneously spraying 1% of microbial polyphenol oxidase, fermenting for 1-2 days, and then putting the tea leaves into a refrigerating chamber for refrigerating and curing for 15-20 days;

s2, tea pigment extraction: transferring the tea leaves in the step S1 to a heatable crushing device, introducing deionized water according to the ratio of material to liquid of 1:40, heating to 70 ℃, and performing ultrasonic extraction at the power of 400W;

s3, separation and purification:

A. after the ultrasonic extraction is finished, centrifuging the obtained extracting solution on a centrifugal machine for 20min at the speed of 3000 r/min;

B. after the centrifugation is finished, taking out the supernatant and carrying out suction filtration on the supernatant by using a vacuum suction filter;

C. finally, centrifuging the solution obtained in the step C on a centrifugal machine at the speed of 4000r/min for 30min, taking out supernatant, adding sodium hydroxide to adjust the pH value to 7. O-7.5, and performing suction filtration to obtain tea pigment filtrate;

s4, concentrating and drying:

A. the filtrate C in the S3 step is evaporated to dryness at 60 ℃ in a rotary evaporator in a rotary manner;

B. and C, extracting the crystal obtained in the step A by using chloroform, and evaporating and drying the extract on a rotary evaporator at 60 ℃ to obtain dark yellow brown tea pigment powder.

2. The method for preparing an ultra-high hardness acrylic resin according to claim 1, wherein: the time for ultrasonic extraction in the step S2 was 50min, and the number of ultrasonic treatments was three.

3. The method for separating a high purity of physically extracted tea pigment according to claim 1, wherein: and D, in the step B of S2, the fixation frequency is three times, and after each fixation is finished, spreading for cooling, and then performing the next fixation: the first water-removing temperature is controlled to be 95-110 ℃, the water-removing time is 40-50s, the second water-removing temperature is controlled to be 115-130 ℃, the water-removing time is 40-60s, the third water-removing temperature is controlled to be 145-160 ℃, and the water-removing time is 50-60 s.

4. A high purity separation apparatus for physically extracting tea pigment according to any one of claims 1 to 3, comprising a tea leaf crusher (1), an ultrasonic extraction tank (2), a central control box (9) and a safety valve (7) provided on the ultrasonic extraction tank (2), wherein a discharge port (5) at the lower end of the ultrasonic extraction tank (2) is communicated with a negative pressure generator through a connection pipe, characterized in that: the outlet end of the tea leaf crusher (1) is communicated with the feed inlet of the ultrasonic extraction tank (2) through a suction pump (6);

a plurality of groups of temperature sensing belts (4) are annularly arranged on the side wall of the tank body of the ultrasonic extraction tank (2), the temperature sensing belts (4) are axially arranged on the side wall of the tank body, each temperature sensing belt (4) is composed of a plurality of temperature sensor units (41) which are arranged at equal intervals and electrically connected with a central control box (9), and an electric heating element (8) is arranged in a region close to each temperature sensing belt (4);

an aeration component (3) is arranged at the bottom of the tank body of the ultrasonic extraction tank (2).

5. The high purity separation apparatus for physically extracting tea pigment according to claim 4, wherein: the internal wall of jar (2) is drawed to ultrasonic wave is provided with and separates chamber (10), separate chamber (10) air inlet opening and be close to the last port that the ultrasonic wave drawed jar (2) jar body, separate chamber (10) and be close to and seted up a plurality of gas vents (11) along jar body axial on the lateral wall of internal portion of jar, gas vent (11) department is provided with duckbill valve (12), the probe portion of temperature sensor unit (41) passes and separates chamber (10) and insert jar internal portion flourishing liquid cavity.

6. The high purity separation apparatus for physically extracting tea pigment according to claim 1, wherein: the aeration component (3) comprises a jacket (31) fixedly arranged on a cone part at the lower end of the tank body of the ultrasonic extraction tank (2) and a spray head (32) arranged on the side wall of the cone part at the lower end of the tank body of the ultrasonic extraction tank (2), the jacket (31) is communicated with the air pump through a connecting pipe, and the air inlet end of the spray head (32) is arranged in the jacket (31).

7. The apparatus for physically separating a high purity tea pigment according to claim 6, wherein: a plurality of spray heads (32) are annularly arranged on the side wall of the cone at the lower end of the ultrasonic extraction tank (2) at equal intervals, and the air outlet end of each spray head (32) points to the center of the tank body.

8. The high purity separation apparatus for physically extracting tea pigment according to claim 1, wherein: the number of the temperature sensing belts (4) is 3-6, and the distance between the adjacent temperature sensor units (41) is not less than 50 cm.

9. The high purity separation apparatus for physically extracting tea pigment according to claim 1, wherein: an ultrasonic crushing and amplitude-changing probe (13) is arranged in the ultrasonic extraction tank (2), and a plurality of ultrasonic power probes (14) are arranged on the outer wall of the ultrasonic extraction tank (2).

10. The high purity separation apparatus for physically extracting tea pigment according to claim 1, wherein: the suction pump (6) is a double-screw vacuum pump.

Technical Field

The invention belongs to the technical field of tea pigment extraction, and particularly relates to a high-purity separation method and high-purity separation equipment for physically extracting tea pigment.

Background

Tea is one of the traditional beverages with multiple functions such as nutrition and health care. Tea pigments (theaflavins, thearubigins and theabrownins) that people extract from tea are widely known as natural pigments and have many benefits. Most experiments show that the tea pigment has the effects of resisting oxidation, enhancing immunity, reducing blood pressure, reducing blood fat, reducing blood viscosity, inhibiting experimental tumors and inhibiting other pharmacological actions. With the development and intensive research of researchers on various health-care functions of tea, researchers gradually become a problem in effectively extracting tea pigments from different teas.

To date, there has been little research in this area. Initially, researchers used boiling water to extract tea pigments. The method can cause high temperature of tea solution during heating, and polymerization of polyphenol substances in tea pigment to darken the color of extract. Subsequent studies have shown that extraction of pure theaflavins from tea leaves using aqueous ethanol at different feed to liquid ratios increases the extraction yield but the production cost ratio is too high and the conditions optimized experimentally are different and generate many fat-soluble impurities. Currently, various new techniques are being used for extraction of tea pigments, such as ultrasound-assisted extraction, microwave-assisted extraction, constant temperature continuous countercurrent multistage leaching, and the like.

However, the extraction rate of the existing tea pigment extraction method is still not high enough, and meanwhile, as the ultrasonic extraction tank in the existing tea pigment extraction method is continuously developed along with industrialization, the tank body volume is correspondingly improved in order to increase the yield, after the tank body volume reaches a large degree, the temperature near a heat source during heating of an internal extracting solution exceeds 100 ℃, and the required processing temperature of 70 ℃ is not reached in a short time at a position relatively far away from the heat source, so that the extraction effect and the extraction efficiency of the tea pigment are influenced, and a targeted improvement design is needed.

Disclosure of Invention

The invention aims to provide a preparation method of an ultrahigh-hardness acrylic resin, which is put into use and solves the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a high purity separation method for physically extracting tea pigment comprises the following steps;

s1, raw material pretreatment:

A. selecting fresh tea leaves, removing old leaves, cleaning with fresh water to remove impurities and dust on the leaves, and naturally airing in the shade for later use;

B. tea curing: adding the dried tea leaves into a fixation machine for fixation, transferring the tea leaves into a fine twisting machine for reciprocating twisting until the tea leaves are curled into strips, taking the tea leaves out of the fine twisting machine, naturally drying the tea leaves, putting the tea leaves into a fermentation box, simultaneously spraying 1% of microbial polyphenol oxidase, fermenting for 1-2 days, and then putting the tea leaves into a refrigerating chamber for refrigerating and curing for 15-20 days;

s2, tea pigment extraction: transferring the tea leaves in the step S1 to a heatable crushing device, introducing deionized water according to the ratio of material to liquid of 1:40, heating to 70 ℃, and performing ultrasonic extraction at the power of 400W;

s3, separation and purification:

A. after the ultrasonic extraction is finished, centrifuging the obtained extracting solution on a centrifugal machine for 20min at the speed of 3000 r/min;

B. after the centrifugation is finished, taking out the supernatant and carrying out suction filtration on the supernatant by using a vacuum suction filter;

C. finally, centrifuging the solution obtained in the step C on a centrifugal machine at the speed of 4000r/min for 30min, taking out supernatant, adding sodium hydroxide to adjust the pH value to 7. O-7.5, and performing suction filtration to obtain tea pigment filtrate;

s4, concentrating and drying:

A. the filtrate C in the S3 step is evaporated to dryness at 60 ℃ in a rotary evaporator in a rotary manner;

B. and C, extracting the crystal obtained in the step A by using chloroform, and evaporating and drying the extract on a rotary evaporator at 60 ℃ to obtain dark yellow brown tea pigment powder.

Preferably, the time for the ultrasonic extraction in the step S2 is 50min, and the number of ultrasonic treatments is three.

Preferably, the water-removing frequency in the step B in S2 is three times, and after each water-removing operation is completed, spreading for cooling, the next water-removing operation is performed: the first water-removing temperature is controlled to be 95-110 ℃, the water-removing time is 40-50s, the second water-removing temperature is controlled to be 115-130 ℃, the water-removing time is 40-60s, the third water-removing temperature is controlled to be 145-160 ℃, and the water-removing time is 50-60 s.

The high-purity separation equipment for physically extracting the tea pigment comprises a tea grinder, an ultrasonic extraction tank, a central control box and a safety valve arranged on the ultrasonic extraction tank, wherein a discharge outlet at the lower end of the ultrasonic extraction tank is communicated with a negative pressure generator through a connecting pipe, and an outlet end of the tea grinder is communicated with a feed inlet of the ultrasonic extraction tank through a suction pump;

a plurality of groups of temperature sensing belts are annularly arranged on the side wall of the tank body of the ultrasonic extraction tank, the temperature sensing belts are axially arranged on the side wall of the tank body, each temperature sensing belt is composed of a plurality of temperature sensor units which are arranged at equal intervals and electrically connected with the central control box, and an electric heating element is arranged in a region close to each temperature sensing belt;

the bottom of the tank body of the ultrasonic extraction tank is provided with an aeration component.

Preferably, the internal wall of jar is drawed to ultrasonic wave is provided with and separates the chamber, separate chamber air inlet opening and be close to the upper port that the jar body was drawed to the ultrasonic wave, separate the chamber and seted up a plurality of gas vents along jar body axial on being close to jar internal portion's lateral wall, gas vent department is provided with the duckbilled valve, the probe portion of temperature sensor unit passes and separates the chamber and insert jar internal portion flourishing liquid cavity.

Preferably, the aeration assembly comprises a jacket fixedly arranged on a cone at the lower end of the tank body of the ultrasonic extraction tank and a spray head arranged on the side wall of the cone at the lower end of the tank body of the ultrasonic extraction tank, the jacket is communicated with the air pump through a connecting pipe, and an air inlet end of the spray head is arranged in the jacket.

Preferably, a plurality of spray heads are annularly arranged on the side wall of the cone at the lower end of the ultrasonic extraction tank at equal intervals, and the air outlet end of each spray head points to the center of the tank body.

Preferably, the number of the temperature sensing strips is 3-6, and the distance between adjacent temperature sensor units is not less than 50 cm.

Preferably, an ultrasonic crushing and amplitude changing probe is arranged in the ultrasonic extraction tank, and a plurality of ultrasonic power probes are arranged on the outer wall of the ultrasonic extraction tank.

Preferably, the suction pump is a twin-screw vacuum pump.

The invention has the technical effects and advantages that: the preparation method of the acrylic resin with ultrahigh hardness,

1. the method improves the extraction rate of tea pigment by refining the material-liquid ratio, the ultrasonic extraction temperature and the ultrasonic extraction time, inhibits the enzymatic oxidation of the tea pigment in the fresh leaves by performing multiple times of enzyme deactivation and rolling and utilizing the curing and the destroying of the oxidase activity in the fresh leaves of the tea leaves, and keeps the content of the tea pigment in the tea leaves.

2. The temperature information is detected in real time through the temperature sensing belts, and the average temperature T at each temperature sensing belt is calculated through the central control box_vAnd the maximum temperature difference T of the same temperature sensing strip_maxWhen T of a certain temperature sensing strip is detected_vT from highest temperature sensor strip_{v is}When the difference value exceeds 10 ℃, reducing the power of the electric heating element at the position of the highest temperature sensing strip, and simultaneously increasing the power of the electric heating element at the position of the lower temperature sensing strip; and at T_maxWhen exceeding and setting for threshold value 15 ℃, increase aeration component's atmospheric pressure for gas transmission power to accelerate torrent efficiency, the mixed liquid of promotion upper and lower portion accelerates to mix and exchanges efficiency, guarantees in the production of great type jar body, and inside everywhere mixed liquid can be even steady reachs 70 ℃, accelerates to draw the effect, avoids the difference in temperature great between the part position, influences the extraction rate.

3. After the aeration group price increases the gas transmission power, the gas that passes through mixed liquid is collected at the jar body top to the extrusion enters into the ultrasonic wave and draws in jar internal wall of jar separate the chamber, then discharges through the duckbill valve of gas vent, thereby promotes inside mixed liquid and carries out the interchange mixing efficiency of lateral flow's mixed liquid of further each position of increase.

4. A57 KHz ultrasonic wave is used for crushing the amplitude variation probe, and the amplitude variation probe is hung in the middle of an extraction tank to carry out 'wall breaking' attack on plant cells in the solution. A plurality of 28KHz ultrasonic power probes are adhered to the outer side of the extraction tank to perform cavitation on plant cells in solution in the tank, so that the coverage area and the intensity of ultrasonic waves are increased, and the extraction rate is enhanced.

5. After smashing tealeaves through tealeaves rubbing crusher, in drawing the ultrasonic wave extraction jar with it through twin-screw vacuum pump, further smash the leaf thick liquid through the extrusion shearing between the twin-screw simultaneously, further strengthen crushing effect, convenient follow-up drawing, the practicality is stronger.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a temperature sensing strip configuration;

FIG. 3 is a cross-sectional view of an ultrasonic extraction tank;

fig. 4 is a schematic view of the connection of the tea leaf grinder and the suction pump.

In the figure: 1. a tea grinder; 2. an ultrasonic extraction tank; 3. an aeration assembly; 31. a jacket; 32. a spray head;

4. a temperature sensing strip; 41. a temperature sensor unit; 5. a discharge outlet; 6. a suction pump; 7. a safety valve; 8. an electric heating element; 9. a central control box; 10. a compartment; 11. an exhaust port; 12. a duckbill valve; 13. breaking the amplitude variation probe by sound waves; 14. an ultrasonic power probe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a high-purity separation method for physically extracting tea pigment, which comprises the following steps;

s1, raw material pretreatment:

A. selecting fresh tea leaves, removing old leaves, cleaning with fresh water to remove impurities and dust on the leaves, and naturally airing in the shade for later use;

B. tea curing: adding the dried tea leaves into a fixation machine for fixation, transferring the tea leaves into a fine twisting machine for reciprocating twisting until the tea leaves are curled into strips, taking the tea leaves out of the fine twisting machine, naturally drying the tea leaves, putting the tea leaves into a fermentation box, simultaneously spraying 1% of microbial polyphenol oxidase, fermenting for 1-2 days, and then putting the tea leaves into a refrigerating chamber for refrigerating and curing for 15-20 days;

s2, tea pigment extraction: transferring the tea leaves in the step S1 to a heatable crushing device, introducing deionized water according to the ratio of material to liquid of 1:40, heating to 70 ℃, and performing ultrasonic extraction at the power of 400W;

the absorbance value of the water-soluble tea pigment extracting solution is continuously increased along with the increase of the material-liquid ratio, and the ratio of l: the maximum absorbance was reached at 36-42, after which the absorbance began to decrease. Too little solvent is not favorable for the dissolution of the pigment, and when the solvent reaches a proper amount, the dissolution rate reaches the maximum, and the absorbance is the highest. And the ratio of the material to the liquid is continuously increased, so that the concentration of the tea pigment is reduced, and the absorbance is reduced.

As shown in the following table:

ratio of material to liquid	1:28	1:32	1:36	1:40	1:44
						absorbance/A	0.33	0.38	0.42	0.44	0.43

The absorbance value of the water-soluble tea pigment extracting solution is continuously increased along with the rising of the temperature, when the temperature is higher than 70 ℃, the absorbance value is rapidly increased, the stability of the tea pigment water solution in the Fuzhuan tea is researched, and the result shows that the extraction and storage temperature of the water-soluble tea pigment in the Fuzhuan tea is unstable when the temperature is higher than 70 ℃, and the structure of the water-soluble tea pigment in the Fuzhuan tea is changed. Therefore, the extraction temperature is selected to be 70 ℃.

As shown in the following table:

temperature of	50	60	70	80	90
						absorbance/A	0.92	0.96	0.97	1.12	1.14

The absorbance value of the water-soluble tea pigment extracting solution is increased along with the increase of the power of the ultrasonic wave, when the power of the ultrasonic wave is 400W, the absorbance value reaches the maximum, and the absorbance begins to decline slowly thereafter. The reason is that the larger the ultrasonic oscillation frequency is, the more favorable the water-soluble tea pigment in the Fuzhuan tea is dissolved in water, but when the ultrasonic power is too high, the water-soluble tea pigment in the Fuzhuan tea is decomposed, so that the water-soluble tea pigment in the Fuzhuan tea is ineffective; and simultaneously, the economic benefit is combined, so that the optimal ultrasonic extraction power is selected to be 400W.

As shown in the following table:

temperature of	300	400	500	600	700
						absorbance/A	0.972	1.04	0.94	0.94	0.92

Through carrying out optimization setting to material-liquid ratio, processing temperature and ultrasonic power among the ultrasonic extraction process to promote the effect that the ultrasonic wave drawed, reinforcing tea pigment extraction rate.

S3, separation and purification:

A. after the ultrasonic extraction is finished, centrifuging the obtained extracting solution on a centrifugal machine for 20min at the speed of 3000 r/min;

B. after the centrifugation is finished, taking out the supernatant and carrying out suction filtration on the supernatant by using a vacuum suction filter;

C. finally, centrifuging the solution obtained in the step C on a centrifugal machine at the speed of 4000r/min for 30min, taking out supernatant, adding sodium hydroxide to adjust the pH value to 7. O-7.5, and performing suction filtration to obtain tea pigment filtrate;

s4, concentrating and drying:

A. the filtrate C in the S3 step is evaporated to dryness at 60 ℃ in a rotary evaporator in a rotary manner;

B. and C, extracting the crystal obtained in the step A by using chloroform, and evaporating and drying the extract on a rotary evaporator at 60 ℃ to obtain dark yellow brown tea pigment powder.

The time for ultrasonic extraction in the step S2 was 50min, and the number of ultrasonic treatments was three.

When the extraction time is 30-50min, the absorbance of water-soluble tea pigment in the Fuzhuan tea is increased along with the increase of the extraction time. When the extraction time is 50-60min, the absorbance begins to decrease. This is probably due to the fact that the water-soluble tea pigments in the extracted Fuzhuan tea are exposed in the air for a long time due to the long extraction time, oxidation or decomposition reaction is enhanced, and absorption value is reduced. When the extraction time exceeded 60 minutes, the absorption rate rose again. Water soluble tea pigments in Fuzhuan tea may produce other species that absorb in this wavelength range during long periods of oxidation and decomposition, so 50 minutes was chosen as the optimum extraction time for this experiment.

As shown in the following table:

Time	30min	40min	50min	60min	70min	80min
							absorbance of the solution	0.85	1.02	1.18	1.03	1.03	1.01

In addition, the raw materials are fully utilized through three times of ultrasonic extraction operation, and the extraction rate of the tea pigment is further ensured.

And D, in the step B of S2, the fixation frequency is three times, and after each fixation is finished, spreading for cooling, and then performing the next fixation: the first water-removing temperature is controlled to be 95-110 ℃, the water-removing time is 40-50s, the second water-removing temperature is controlled to be 115-130 ℃, the water-removing time is 40-60s, the third water-removing temperature is controlled to be 145-160 ℃, and the water-removing time is 50-60 s. The oxidase activity in the fresh leaves is destroyed and passivated by utilizing the curing of the tea leaves, the enzymatic oxidation of tea pigment in the fresh leaves is inhibited, and the content of the tea pigment in the tea leaves is maintained.

As shown in fig. 1-4, a high purity separation device for physically extracting tea pigment as above is also disclosed, comprising a tea leaf crusher 1, an ultrasonic extraction tank 2, a central control box 9 and a safety valve 7 arranged on the ultrasonic extraction tank 2, wherein a discharge outlet 5 at the lower end of the ultrasonic extraction tank 2 is communicated with a negative pressure generator through a connecting pipe, and an outlet end of the tea leaf crusher 1 is communicated with a feed inlet of the ultrasonic extraction tank 2 through a suction pump 6;

a plurality of groups of temperature sensing belts 4 are annularly arranged on the side wall of the tank body of the ultrasonic extraction tank 2, the temperature sensing belts 4 are axially arranged on the side wall of the tank body, each temperature sensing belt 4 is composed of a plurality of temperature sensor units 41 which are arranged at equal intervals and electrically connected with a central control box 9, and an electric heating element 8 is arranged in an area close to each temperature sensing belt 4;

the bottom of the tank body of the ultrasonic extraction tank 2 is provided with an aeration component 3.

In the actual ultrasonic extraction process, firstly, the tea leaves put into the tea leaf crusher 1 are crushed and then input into the ultrasonic extraction tank 2, the ultrasonic crushing amplitude-changing probe 13 of the ultrasonic extraction tank 2 is started to release ultrasonic energy into the extraction solution, the power irradiation vibration and cavitation of the ultrasonic waves to the plants and the wall breaking acceleration release action of the ultrasonic waves to the plants on the active ingredients in the plant cells are integrated, the extraction of tea pigments is realized, meanwhile, the electric heating element 8 is started to heat the mixture of the inner extraction solution, meanwhile, the bottom aeration component 3 transmits gas to the inside, on one hand, the internal air pressure is improved, simultaneously, the mixed liquid in the tank body is blown to generate turbulence, the alternating current of the mixed liquid on the upper layer and the lower layer is increased, the temperature of the mixed liquid at the axial position of the tank body in the area is detected in real time by the temperature sensing belt 4, the temperature is converted into an electric signal and is transmitted to the central control box 9, calculating the average temperature Tv of each temperature sensing strip 4 and the maximum temperature difference Tmax of the same temperature sensing strip 4 through a central control box 9, and when the difference between the Tv of a certain temperature sensing strip 4 and the Tv of the highest temperature sensing strip 4 is detected to exceed 10 ℃, reducing the power of the electric heating element 8 at the highest temperature sensing strip 4 and simultaneously increasing the power of the electric heating element 8 at the lower temperature sensing strip 4;

and when Tmax exceeded and set for threshold value 15 ℃, increase aeration subassembly 3's atmospheric pressure for gas transmission power to accelerate torrent efficiency, promote upper and lower portion mixed liquid and accelerate mixing and exchange efficiency, in guaranteeing the production of great type jar body, inside mixed liquid everywhere can be even steady reach 70 ℃, accelerate and draw the effect, avoid the difference in temperature great between the part position, influence the extraction rate.

The internal wall of jar 2 is drawed to ultrasonic wave is provided with and separates chamber 10, separate chamber 10 air inlet opening and be close to the upper port that the jar 2 jar of body was drawed to the ultrasonic wave, separate chamber 10 and seted up a plurality of gas vents 11 along jar body axial on being close to jar internal portion's lateral wall, gas vent 11 departments are provided with duckbill valve 12, the probe portion of temperature sensor unit 41 passes and separates chamber 10 and inserts jar internal portion flourishing liquid cavity. After the aeration group increases the gas transmission power, the gas passing through the mixed liquid is collected at the top of the tank body and extruded into the separation chamber 10 on the inner wall of the tank body of the ultrasonic extraction tank 2, and then is discharged through the duckbill valve 12 of the exhaust port 11, so that the internal mixed liquid is pushed to flow transversely, and the alternating current mixing efficiency of the mixed liquid at each position is further increased.

The aeration assembly 3 comprises a jacket 31 fixedly arranged on the cone part at the lower end of the tank body of the ultrasonic extraction tank 2 and a spray head 32 arranged on the side wall of the cone part at the lower end of the tank body of the ultrasonic extraction tank 2, the jacket 31 is communicated with an air pump through a connecting pipe, and the air inlet end of the spray head 32 is arranged in the jacket 31. The gas is supplied into the jacket 31 by the gas pump, and the gas is pushed into the tank body by the shower head 32 to impact the internal mixture.

A plurality of spray heads 32 are annularly arranged on the side wall of the cone at the lower end of the ultrasonic extraction tank 2 at equal intervals, and the air outlet ends of the spray heads 32 point to the center of the tank body. The air pressure is guaranteed to be converged to the middle of the tank body, so that the mixed liquid at the center of the tank body is guaranteed to be blown in a centralized mode, and the flowing effect of descending of the ascending edge of the middle of the tank body is guaranteed.

The number of the temperature sensing strips 4 is 3-6, and the distance between the adjacent temperature sensor units 41 is not less than 50 cm. The number of the temperature sensing strips 4 and the number of the temperature sensor units 41 are defined on the basis of ensuring the effect of detecting the temperature at each position. The cost is reduced.

The ultrasonic extraction tank 2 is internally provided with an ultrasonic crushing and amplitude-changing probe 13, and the outer wall of the ultrasonic extraction tank 2 is provided with a plurality of ultrasonic power probes 14. The amplitude-variable probe 13 is broken by using 57KHz ultrasonic waves and hung in the middle of an extraction tank to carry out 'wall breaking' attack on plant cells in the solution. A plurality of 28KHz ultrasonic power probes 14 are adhered to the outer side of the extraction tank to perform 'cavitation' action on plant cells in the solution in the tank, so that the coverage area and the intensity of ultrasonic waves are increased, and the extraction rate is enhanced.

The suction pump 6 is a twin-screw vacuum pump. After smashing tealeaves through tealeaves rubbing crusher 1, in drawing ultrasonic extraction jar 2 with it through twin-screw vacuum pump, further smash the leaf thick liquid through the extrusion shearing between the twin-screw simultaneously, further strengthen crushing effect, convenient follow-up drawing, the practicality is stronger.