CN111299236A - A kind of extraction equipment for white tea polyphenols used in the field of cosmetics - Google Patents

Abstract

The invention provides an extraction device of white tea polyphenol applied to the field of cosmetics, which relates to the technical field of tea daily chemical products, and comprises a tea washing device, a drying device, a crushing device, an extraction device and a suction filtration device which are sequentially arranged, wherein the tea washing device comprises a water containing tank, a conveyor belt sleeved on the periphery of the water containing tank, two conveying rollers arranged at two ends of the water containing tank, and a plurality of cleaning rollers arranged right above the water containing tank, the water containing tank comprises a plurality of grooves, two side walls arranged at the open ends of the grooves, and a plurality of limiting columns fixedly arranged on the side walls and used for limiting the conveyor belt, a plurality of positioning blocks used for driving tea leaves are fixedly connected to the conveyor belt, a main shaft of the cleaning roller connected with a rotating motor is inserted on the side walls through holes on the side walls, the conveyor belt is sleeved on the conveying rollers, the tea polyphenol in the white tea is extracted through grading cleaning, drying, extraction, the tea leaves are cleaned more thoroughly, the obtained tea polyphenol solution contains fewer impurities, and the tea polyphenol is purer.

Description

A kind of extraction equipment for white tea polyphenols used in the field of cosmetics

technical field

The invention relates to the technical field of tea daily chemical products, in particular to an extraction device for white tea polyphenols used in the field of cosmetics.

Background technique

Tea originated in China and spread all over the world. Tea has been used as a health drink in my country for four or five thousand years. In 1267, steamed green tea from China made its way to Japan. In the 12th year of Zhenguan, my country's oolong tea spread to the Western Regions. In the seventeenth century, Chinese black tea spread to Europe, and gradually became a cosmopolitan drink. Especially in modern times, due to the rapid development of the world's tea field, the number of tea drinkers has exceeded 4 billion. Tea has a long history and culture and is widely accepted, not only because tea has the function of quenching thirst,

Tea has a variety of physiological health care effects. The active ingredients in tea can be roughly divided into phenolic substances, polysaccharides, purines, vitamins and tea pigments. Among them, the content of tea polyphenols, caffeine and tea polysaccharides in tea It is generally considered to be the main active ingredient in tea. Because of its unique biological activity, tea polyphenols play a relatively large role. Tea polyphenols, also known as tea tannins, are a general term for a class of phenolic compounds with antioxidant effects in tea. Anti-tumor, hypolipidemic, hypoglycemic, anti-radiation, anti-virus, anti-atherosclerosis, anti-caries and tooth protection and inhibition of bacterial growth and other physiological health care and pharmacological effects.

Tea polyphenols have been used in many fields, such as medical and health products, feed for aquaculture, and daily chemicals. Due to its high antioxidant properties and the ability to scavenge free radicals, tea polyphenols can effectively prevent the oxidation of collagen in the cortex by adding a certain amount of tea polyphenols to cosmetics. Anti-inflammatory, anti-radiation and other functions have been widely used in cosmetics, skin care products and other products. The medicinal properties of white tea are very good. It has the functions of relieving hangover and sobering up, clearing heat and moistening the lungs, calming the liver and benefiting blood, reducing inflammation and detoxification, reducing blood pressure and reducing fat, and eliminating fatigue, etc., especially for the physical discomfort and digestive dysfunction caused by excessive smoking and drinking, excessive oiliness, and excessive anger. , has a unique and smart health care effect, and has been used in daily chemical products. It can be used to produce many kinds of daily necessities by adding tea polyphenols, such as creams, masks, handmade soaps with good antioxidant effect, and can also be applied to health care products. production of capsules. In the prior art, tea polyphenols are mostly extracted directly from dry tea leaves, and tea polyphenols are extracted by biological fermentation of the soaking liquid of dry tea leaves and combined column chromatography. Extraction of polyphenols, but the cleaning of tea is usually a one-time cleaning. The water used to clean the tea is collected in a bucket. Frequent replacement of the cleaning water is required to ensure the thorough cleaning of the tea. The operation is frequent and the tea is cleaned. Not completely. In addition, there are many impurities in the liquid of the extracted tea polyphenols.

SUMMARY OF THE INVENTION

In view of this, the present invention provides an extraction equipment for white tea polyphenols applied in the field of cosmetics, including a tea washing device, a drying device, a pulverizing device, a leaching device, and a suction filtration device arranged in sequence, and the tea washing device includes a water holding tank, a conveyor belt sleeved on the outer periphery of the water holding tank, two conveying rollers arranged at both ends of the water holding tank, a plurality of cleaning rollers arranged directly above the water holding tank, and the water holding tank includes a plurality of grooves , two side walls arranged at the open end of the groove, a plurality of limit posts fixed on the side walls for limiting the conveyor belt, and a clamping is formed between the limit posts and the water tank part, clamp the conveyor belt, so that the conveyor belt section in the water tank is laid on the inner wall of the water tank, a plurality of positioning blocks for driving the tea leaves are fixed on the conveyor belt, and the main shaft of the cleaning roller connected with the rotating motor passes through the The through hole on the side wall is inserted into the side wall, the conveyor belt is sleeved on the transmission roller, the conveyor belt moves under the drive of the transmission roller, and the rotating shaft of the driving roller is connected with the driving motor. The model can refer to the specific structure of the conveyor belt device in the prior art. The suction filtration device includes a pressurized box with a cover, and microfiltration membranes and ultrafiltration membranes are arranged in the pressurized box from top to bottom.

Preferably, the cross section of the water holding tank is composed of a plurality of downwardly protruding arcs.

Preferably, the height of the water in the water tank is lower than the through hole.

Preferably, the cleaning roller is provided with bristles, and the distance between the bristles and the inner wall of the water tank is equal to 2-3 times the thickness of the transmission belt.

Preferably, the drying device includes a vibrating screen, a bracket fixed on a wall frame of the vibrating screen, and a hot fan fixed on the bracket.

Preferably, the pulverizing device includes a pulverizing box, a rotating central column arranged in the pulverizing box and connected to a rotating motor, a plurality of blades fixed on the rotating central column, and the bottom of the pulverizing box is provided with tea Powder export. The tea powder outlet sends the tea powder to the extraction device through a conveyor belt or manually.

Preferably, the crushing box is provided with an accommodating cavity for accommodating the rotating motor.

Preferably, the pore size of the microfiltration membrane is 0.2-0.5 μm, and the pore size of the ultrafiltration membrane is 0.05-0.08 μm. The working pressure of the pressurized box is 0.25MPa.

Preferably, the leaching device comprises a leaching box with a feeding port, a stirring rod arranged in the leaching box, a heating component arranged on the periphery of the leaching box, and a liquid outlet is provided at the lower part of the leaching box, The liquid outlet is fixedly connected with an internal net.

Preferably, it also includes a pump whose output end is connected to the liquid outlet, and the output end is connected to the suction filtration device.

The working process of a white tea polyphenol extraction equipment used in the field of cosmetics in the present invention: put the tea leaves into the leftmost groove of the water tank, put clean water into the first groove and the second groove , The third groove, driven by the drive roller, the conveyor belt passes through the first groove, the second groove, and the third groove in turn. The groove and the third groove are cleaned; after the tea leaves are cleaned, the tea leaves enter the drying device to dry the tea leaves; after the white tea leaves are dried, the tea leaves enter the crushing device; the tea powder outlet passes through a conveyor belt or manually sends the tea powder to soaking Extraction is carried out in the extraction device; the extraction liquid in the extraction box is pumped to the pressurization box by the action of the pump, the pressure is adjusted, and the membrane is filtered to obtain a liquid rich in tea polyphenols.

In the tea cleaning stage, the tea leaves pass through the clean water in different grooves in turn under the cooperative action of the cleaning roller, the transmission belt and the positioning block, which avoids frequent waterproofing and water inflow in the tea cleaning stage, makes the cleaning process simpler, and improves the quality of the tea leaves. cleanliness. The tea polyphenols in white tea are extracted by grading cleaning, drying, leaching and membrane separation, and the tea leaves are cleaned more thoroughly, and the obtained tea polyphenol solution contains less impurities and the tea polyphenols are purer.

Description of drawings

Fig. 1 is the structural representation of a kind of extraction equipment of white tea polyphenols applied in the field of cosmetics provided by the specific embodiment of the present invention;

2 is a schematic structural diagram of a drying device of a white tea polyphenol extraction equipment used in the cosmetic field provided by a specific embodiment of the present invention;

3 is a schematic structural diagram of a pulverizing device of a white tea polyphenol extraction equipment used in the cosmetic field provided by a specific embodiment of the present invention;

4 is a schematic structural diagram of a cleaning device of a white tea polyphenol extraction equipment used in the cosmetic field provided by a specific embodiment of the present invention;

5 is another structural schematic diagram of a cleaning device of a white tea polyphenol extraction equipment used in the cosmetic field provided by a specific embodiment of the present invention;

6 is another structural schematic diagram of a cleaning device of a white tea polyphenol extraction equipment used in the cosmetic field provided by a specific embodiment of the present invention;

7 is a schematic structural diagram of a water tank of a white tea polyphenol extraction equipment used in the cosmetic field provided by a specific embodiment of the present invention;

Fig. 8 is a partial enlarged structural schematic diagram of a water holding tank of a white tea polyphenol extraction equipment used in the cosmetic field provided by a specific embodiment of the present invention;

9 is a schematic structural diagram of the arrangement of limit posts, conveyor belts, and grooves of a white tea polyphenol extraction device used in the cosmetic field provided by a specific embodiment of the present invention.

Among them: 1. Tea washing device; 11. Water tank; 111, inner wall; 112, groove; 1121, first groove; 1122, second groove; 1123, third groove; 113, side wall; 1131, Through hole; 114, limit post; 115, cleaning roller; 1151, bristles; 12, conveyor belt; 121, positioning block; 13, conveyor roller; 2, drying device; 21, vibrating screen; 22, bracket; 23, hot fan 3. Crushing device; 31. Crushing box; 311. Receiving cavity; 32. Rotating central column; 33. Blade; 34. Tea powder outlet; 35. Rotating motor; 4. Extracting device; 41. Feeding port; 42 , leaching box; 43, stirring rod; 44, heating part; 45, liquid outlet; 46, internal net; 5, suction filtration device; 51, pressurized box; 511, cover body; 512, liquid outlet; 52, Microfiltration membrane; 53. Ultrafiltration membrane; 6. Pump.

Detailed ways

The present invention will be described in detail below with reference to specific embodiments.

Please refer to FIG. 1 to FIG. 9, for the sake of understanding, FIG. 5 is a schematic diagram of the explosion structure of the cleaning device, and the limit column 114 in FIG. 5 only draws a seat representative, a kind of extraction equipment for white tea polyphenols used in the field of cosmetics , including a tea washing device 1, a drying device 2, a pulverizing device 3, a leaching device 4, and a suction filtration device 5, which are arranged in sequence. The tea washing device 1 includes a water tank 11. The conveying belt 12, two conveying rollers 13 arranged at both ends of the water tank 11, a plurality of cleaning rollers 115 arranged directly above the water tank 11, the The side wall 113 of the open end of the groove 112 (the open end is the two ends of the groove 112, the groove 112 is a horizontal semi-cylindrical structure, then the open end is the two ends of the semi-cylindrical), a plurality of fixed on the side The wall 113 is used to limit the limit posts 114 of the conveyor belt 12 , the two side walls 113 are provided with limit posts 114 , there are two rows of limit posts 114 , the distance between the limit posts 114 and the bottom of the water tank 11 Should be the thickness of the conveyor belt 12 , a clamping portion is formed between the limit post 114 and the water tank 11 to clamp the conveyor belt 12 , so that the conveyor belt 12 in the water tank 11 is laid on the inner wall 111 of the water tank 11 . On the conveyor belt 12, a plurality of positioning blocks 121 for driving tea leaves are fixedly connected, and the main shaft of the cleaning roller 115 connected with the rotating motor 35 is inserted on the side wall 113 through the through holes 1131 on the side wall 113, The conveyor belt 12 is sleeved on the drive roller, and the conveyor belt 12 moves under the drive of the conveyor roller 13. The rotating shaft of the drive roller is connected to the drive motor. For the specific model of the motor, refer to the description of the conveyor belt 12 device in the prior art. Specifically, the suction filtration device 5 includes a pressure box 51 with a cover 511, a microfiltration membrane 52 and an ultrafiltration membrane 53 arranged in the pressure box 51 from top to bottom, and the pressure box 51 is provided with a drain port 512, which is normally closed.

Wherein, the cross section of the water holding tank 11 is composed of a plurality of downwardly protruding arcs. The conveyor belt 12 rotates under the drive of the drive roller. When passing through the water tank 11 , the clamping part formed by the limit post 114 and the inner wall 111 of the water tank 11 can limit the running track of the transmission belt, so that the conveyor belt 12 can be laid on the inner wall 111 of the water tank 11 . , the cross section of the conveyor belt 12 in the water tank 11 is also composed of a plurality of downwardly convex arcs, the arrangement of the limit posts 114 is wavy, and each limit post 114 is the distance between the inner wall 111 of the water tank 11 same. The positioning block 121 fixed on the conveyor belt 12 may be a raised wooden block, and its function is to bring the tea leaves to the next groove 112 for cleaning when the conveyor belt rotates. In order to prevent the tea leaves from floating on the surface of the water all the time, a cleaning roller 115 is provided. The cleaning roller 115 is provided with bristles 1151. The distance between the bristles 1151 and the inner wall 111 of the water tank 11 is equal to 2-3 times the thickness of the transmission belt. The minimum distance between the cleaning roller 115 and the positioning block 121 should not be too large, so that a downward force can be given to the tea leaves under the rotation of the cleaning roller 115, and at the same time, it cooperates with the positioning block 121 to drive the tea leaves from the water contained in the water under the rotation of the water flow. The left side of the groove 112 is turned to the right side. Of course, the rotation direction of the cleaning roller 115 is counterclockwise. The cleaning roller 115 is provided with bristles 1151, which can clean the tea leaves. In this specific embodiment, there are three The grooves 112 are correspondingly provided with three cleaning rollers 115 , and the number of the cleaning rollers 115 is the same as the number of the grooves 112 . The groove 112 in the water tank 11 can be divided into a first groove 1121, a second groove 1122, and a third groove 1123. The tea leaves are put into the first groove 1121, and the clean water is placed in the first groove 1121. To the first groove 1121, the second groove 1122, and the third groove 1123, driven by the drive roller, the conveyor belt 12 passes through the first groove 1121, the second groove 1122, and the third groove 1123 in sequence. This process It can be regarded as the climbing of the transmission belt. Under the joint action of the conveyor belt 12 and the cleaning roller 115, the tea leaves are also cleaned through the first groove 1121, the second groove 1122, and the third groove 1123 in turn, and the tea leaves are completed in the first groove 1121. After the first cleaning, the second cleaning is completed in the second groove 1122, and the third cleaning is completed in the third groove 1123. After the cleaning, it can be seen that the first groove 1121, the second groove 1122, the third The degree of turbidity of the grooves 1123 is different. The first groove 1121 is the dirtiest. After cleaning a lot of tea leaves, the water in the grooves 112 will be polluted and should be replaced in time to keep the clean water. The length of the stopper is slightly smaller than the width of the conveyor belt 12 .

In addition, the height of the water in the water tank 11 is lower than the through hole 1131 . The water in the groove 112 is prevented from overflowing.

The drying device 2 includes a vibrating screen 21 , a bracket 22 fixed on the wall frame of the vibrating screen 21 , and a hot fan 23 fixed on the bracket 22 . The hot fan 23 is a common small heating hot fan 23 in the prior art. One end (the rightmost side) of the conveyor belt 12 is in contact with the drying device 2. After the tea leaves are cleaned, the tea leaves enter the drying device 2 to dry the tea leaves. .

After the white tea leaves are dried, the tea leaves enter the pulverizing device 3. The pulverizing device 3 includes a pulverizing box 31, a rotating central column 32 arranged in the pulverizing box 31 and connected to a rotating motor 35, and a plurality of rotating central columns 32 are fixed on the rotating central column 32. The blade 33 of the crushing box 31 is provided with a tea powder outlet 34 at the bottom. Under the driving of the rotating motor 35, the rotating central column 32 rotates, and the blade 33 is driven to rotate and cut the tea leaves, and the tea leaves are cut into tea powder. The crushing box 31 is provided with an accommodating cavity 311 for accommodating the rotating motor 35 .

The tea powder outlet 34 passes through a conveyor belt 12 or manually sends the tea powder to the extraction device 4 for extraction. The rod 43 and the heating element 44 arranged on the periphery of the extraction box 42, the lower part of the extraction box 42 is provided with a liquid outlet 45, and the liquid outlet 45 is fixedly connected to an internal net 46 to prevent clogging during suction filtration. Ethanol is added to the extraction tank 42 in advance, and the extraction should be maintained for a certain period of time to ensure the completeness of the extraction. At the same time, it is heated appropriately to increase the extraction rate. The leaching can be repeated, and the residue left from the first leaching can be subjected to a second leaching.

It also includes a pump 6 whose output end is connected to the liquid outlet 45 and the output end is connected to the suction filtration device 5, and the leaching liquid pump 6 in the leaching box 42 is sent to the pressurizing box 51 by the action of the pump 6 to filter the membrane, A liquid rich in tea polyphenols is obtained, and the liquid is subsequently concentrated. The pore size of the microfiltration membrane 52 is 0.2-0.5 μm, and the pore size of the ultrafiltration membrane 53 is 0.05-0.08 μm. The working pressure of the pressurizing box 51 is 0.25MPa. The microfiltration membrane 52 can not only effectively separate and extract the components in the tea infusion, but also achieve the effect of clarifying the tea infusion. Ultrafiltration can effectively intercept macromolecular substances such as protein, gelatin, and polysaccharide in the tea extract, thereby extracting purer tea polyphenols.

The present invention allows the tea leaves to pass through the clean water in different grooves 112 in sequence under the cooperative action of the cleaning roller 115, the transmission belt and the positioning block 121 during the cleaning stage of the tea leaves, which avoids frequent waterproofing and water inflow during the tea cleaning stage, and the cleaning process is simpler. Improve the cleanliness of tea leaves. The tea polyphenols in white tea are extracted by grading cleaning, drying, leaching and membrane separation, and the tea leaves are cleaned more thoroughly, and the obtained tea polyphenol solution contains less impurities and the tea polyphenols are purer.

The present invention is not limited to the above-mentioned specific embodiments, and various modifications and variations of the present invention are possible. Any modification, equivalent replacement, improvement, etc. made to the above embodiments according to the technical essence of the present invention shall be included in the protection scope of the present invention.

Claims (10)

1. an extraction device of tea polyphenols applied in the cosmetic field, comprising a tea washing device, a drying device, a pulverizing device, a leaching device, a suction filtration device arranged successively, it is characterized in that, the described tea washing device comprises a water tank , a conveyor belt sleeved on the outer circumference of the water tank, two conveyor rollers arranged at both ends of the water tank, and a plurality of cleaning rollers arranged directly above the water tank, the water tank includes a plurality of grooves, two a side wall arranged at the open end of the groove, a plurality of limit posts fixed on the side wall for limiting the conveyor belt, and a clamping portion is formed between the limit posts and the water tank, The conveyor belt is clamped so that the conveyor belt section in the water tank is laid on the inner wall of the water tank, a plurality of positioning blocks for driving tea leaves are fixed on the transmission belt, and the main shaft of the cleaning roller connected with the rotating motor passes through the side. The through hole on the wall is inserted into the side wall, the conveyor belt is sleeved on the transmission roller, and the conveyor belt moves under the drive of the conveyor roller. The suction filter device includes a pressurized box with a cover. The microfiltration membrane and the ultrafiltration membrane are arranged in the pressurized box from top to bottom. 2 . The extraction equipment for tea polyphenols used in the cosmetic field according to claim 1 , wherein the cross section of the water holding tank is composed of a plurality of downwardly convex arcs. 3 . 3 . The extraction equipment for tea polyphenols used in the cosmetic field according to claim 2 , wherein the height of the water in the water tank is lower than the through hole. 4 . 4 . The extraction equipment for tea polyphenols used in the cosmetic field according to claim 3 , wherein the cleaning roller is provided with bristles, and the distance between the bristles and the inner wall of the water tank is equal to the transmission belt. 5 . 2-3 times the thickness. 5 . The extraction equipment of tea polyphenols used in the cosmetic field according to claim 1 , wherein the drying device comprises a vibrating screen, a bracket fixed on a ledge of the vibrating screen, a solid A thermal fan is provided on the bracket. 6 . The extraction equipment for tea polyphenols used in the cosmetic field according to claim 5 , wherein the pulverizing device comprises a pulverizing box, a rotating center column arranged in the pulverizing box and connected to a rotating motor. 7 . , a plurality of blades fixed on the rotating central column, and a tea powder outlet is arranged at the bottom of the crushing box. 7 . The extraction equipment for tea polyphenols used in the cosmetic field according to claim 6 , wherein the pulverizing box is provided with an accommodating cavity for accommodating the rotating motor. 8 . 8 . The extraction equipment for tea polyphenols used in the cosmetic field according to claim 1 , wherein the microfiltration membrane has a membrane aperture of 0.2-0.5 μm, and the ultrafiltration membrane has a membrane aperture of 0.2-0.5 μm. 9 . 0.05-0.08μm. 9 . The extraction equipment for tea polyphenols used in the cosmetic field according to claim 1 , wherein the extraction device is provided with a stirring rod, and the lower part of the extraction device is provided with a liquid outlet, 10 . The liquid outlet is fixedly connected with an internal net. 10 . The extraction equipment for tea polyphenols used in the cosmetic field according to claim 9 , further comprising a pump whose output end is connected to the liquid outlet and the output end is connected to a suction filtration device. 11 .

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