CN115253377A - Continuous separation and extraction process and equipment for tea polyphenol - Google Patents
Continuous separation and extraction process and equipment for tea polyphenol Download PDFInfo
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- CN115253377A CN115253377A CN202210981672.XA CN202210981672A CN115253377A CN 115253377 A CN115253377 A CN 115253377A CN 202210981672 A CN202210981672 A CN 202210981672A CN 115253377 A CN115253377 A CN 115253377A
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- sealing ring
- tea polyphenol
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- 241001122767 Theaceae Species 0.000 title claims abstract description 56
- 150000008442 polyphenolic compounds Chemical class 0.000 title claims abstract description 44
- 235000013824 polyphenols Nutrition 0.000 title claims abstract description 44
- 238000000926 separation method Methods 0.000 title claims abstract description 40
- 238000000605 extraction Methods 0.000 title claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 57
- 238000003860 storage Methods 0.000 claims abstract description 27
- 239000002904 solvent Substances 0.000 claims abstract description 10
- 239000004744 fabric Substances 0.000 claims abstract description 5
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 38
- 239000012528 membrane Substances 0.000 claims description 31
- 239000012045 crude solution Substances 0.000 claims description 30
- 239000007787 solid Substances 0.000 claims description 23
- 238000011010 flushing procedure Methods 0.000 claims description 22
- 239000002245 particle Substances 0.000 claims description 21
- 230000007246 mechanism Effects 0.000 claims description 18
- 230000005540 biological transmission Effects 0.000 claims description 11
- 238000001223 reverse osmosis Methods 0.000 claims description 7
- 230000033001 locomotion Effects 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 239000013049 sediment Substances 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000000108 ultra-filtration Methods 0.000 claims description 2
- 238000007873 sieving Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 12
- 239000002893 slag Substances 0.000 description 9
- 239000008187 granular material Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- GUTLYIVDDKVIGB-OUBTZVSYSA-N Cobalt-60 Chemical compound [60Co] GUTLYIVDDKVIGB-OUBTZVSYSA-N 0.000 description 1
- CITFYDYEWQIEPX-UHFFFAOYSA-N Flavanol Natural products O1C2=CC(OCC=C(C)C)=CC(O)=C2C(=O)C(O)C1C1=CC=C(O)C=C1 CITFYDYEWQIEPX-UHFFFAOYSA-N 0.000 description 1
- CIOAGBVUUVVLOB-NJFSPNSNSA-N Strontium-90 Chemical compound [90Sr] CIOAGBVUUVVLOB-NJFSPNSNSA-N 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 235000010208 anthocyanin Nutrition 0.000 description 1
- 229930002877 anthocyanin Natural products 0.000 description 1
- 239000004410 anthocyanin Substances 0.000 description 1
- 150000004636 anthocyanins Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 210000001185 bone marrow Anatomy 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001784 detoxification Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 150000002206 flavan-3-ols Chemical class 0.000 description 1
- 235000011987 flavanols Nutrition 0.000 description 1
- 229930003935 flavonoid Natural products 0.000 description 1
- 235000017173 flavonoids Nutrition 0.000 description 1
- 150000002215 flavonoids Chemical class 0.000 description 1
- HVQAJTFOCKOKIN-UHFFFAOYSA-N flavonol Natural products O1C2=CC=CC=C2C(=O)C(O)=C1C1=CC=CC=C1 HVQAJTFOCKOKIN-UHFFFAOYSA-N 0.000 description 1
- 150000002216 flavonol derivatives Chemical class 0.000 description 1
- 235000011957 flavonols Nutrition 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000007965 phenolic acids Chemical class 0.000 description 1
- 235000009048 phenolic acids Nutrition 0.000 description 1
- 239000000941 radioactive substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D11/02—Solvent extraction of solids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/31—Self-supporting filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/31—Self-supporting filtering elements
- B01D29/35—Self-supporting filtering elements arranged for outward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
Abstract
The invention discloses a continuous separation and extraction process of tea polyphenol, which comprises the following specific steps of crushing dried tea leaves, sieving the tea leaves by using a screen, dissolving the tea polyphenol in the tea leaves by using a solvent, carrying out secondary filtration by using a screen cloth to prepare a crude dissolved solution, and sending the crude dissolved solution into a liquid storage barrel.
Description
Technical Field
The invention discloses a continuous separation and extraction process and equipment for tea polyphenol, and belongs to the technical field of tea polyphenol processing.
Background
Tea polyphenols are the general term for polyphenols in tea, and include flavanols, anthocyanins, flavonoids, flavonols, phenolic acids, etc. The active substances such as tea polyphenol have the functions of detoxification and radiation resistance, can effectively prevent radioactive substances from invading bone marrow, can quickly discharge strontium 90 and cobalt 60 out of the body, are known as 'radiation killer' by the health and medical community, and have wide application in the fields of life and medicine.
The extraction of current tea polyphenol is through carrying out primary screen cloth separation after breaking tealeaves earlier, adopt the solvent to dissolve tea polyphenol composition afterwards, utilize reverse osmosis membrane or milipore filter to separate the extraction with tealeaves residue granule and the solution that contains tea polyphenol, but traditional separation extraction technology is continuously let in tealeaves residue granule and solution to airtight container in, exert certain fluid pressure and make solution pass reverse osmosis membrane or milipore filter, because tealeaves residue granule piles up slowly in the container, adhere to and can influence the extraction efficiency of tea polyphenol greatly on reverse osmosis membrane or milipore filter, just need clear up at intervals, can't satisfy the demand of continuous production processing.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a continuous tea polyphenol separation and extraction process and equipment.
The invention realizes the aim through the following technical scheme, and the process for continuously separating and extracting the tea polyphenol comprises the following steps:
s1: putting the dried tea leaves into a crusher for crushing treatment, and screening by using a screen to prepare tea leaf powder;
s2: soaking tea powder in 40-50 deg.C solvent for 30-60min for dissolving, and filtering with cloth net for two times to obtain crude solution;
s3: adding a crude solution into a solution storage barrel from a liquid inlet pipe, then enabling the crude solution to enter a space between a filter element and an outer barrel, enabling tea polyphenol and a solvent in the crude solution to pass through a membrane component in the process that a transmission mechanism drives a piston to move up and down, enabling solid particles in the crude solution to be intercepted by the membrane component, simultaneously enabling the crude solution to enter a flushing hole to flush solid particles on the inner wall of the outer barrel and the surface of the membrane component, and then enabling the crude solution to enter a collecting barrel through a liquid outlet pipe to obtain residue liquid;
s4: after the crude solution in the liquid storage barrel is separated and extracted, the residue liquid is pumped into the liquid storage barrel by using a delivery pump and a liquid return pipe for secondary separation until the separation is finished.
Preferably, the solvent is water or ethanol, and the membrane component is a reverse osmosis membrane or an ultrafiltration membrane.
The utility model provides a tea polyphenol continuous separation draws equipment, includes the frame and connects the storage bucket, be provided with the storage bucket in the frame, the lateral wall of storage bucket is provided with the feed liquor pipe, and the bottom is provided with movable extrusion device, movable extrusion device includes filter core, urceolus and piston, filter core fixed mounting is at the center of urceolus, and the filter core is hollow structure, connect the storage bucket to be located the below of filter core, be provided with a plurality of through-hole on the lateral wall of filter core to install the membrane module that is used for separating solid particle and dissolving liquid in the periphery that corresponds the through-hole, the piston is located between urceolus and the filter core, and is connected with the actuating lever on the piston, the top at the storage bucket is installed to the actuating lever, be provided with the drive mechanism who is used for driving the actuating lever to go up and down on the storage bucket, the bottom of urceolus is provided with slag extractor, slag extractor constructs including sealing ring, elasticity locating part and gomphosis piece, the both sides at the sealing ring are installed respectively to elasticity locating part, gomphosis piece can with the piston joint, elasticity locating part keeps applying the effort that is close to the bottom the sealing ring to the distance of up-motion carries on the liquid collecting barrel, the inner diameter of sealing ring is greater than the outer diameter of the outer barrel, and be provided with the drain barrel, the drain hole side of collection barrel, be provided with the drain barrel collection barrel side of collection barrel.
Preferably, the bottom of urceolus is provided with the first round platform face with sealing ring complex, the structure that middle part is high, low all around is personally submitted to first round platform, be provided with the second round platform face on the sealing ring, the second round platform is personally submitted all around high, the low structure in middle part, the bottom of sealing ring still is provided with the horizontal plane to and be formed with the collection sediment groove between the first round platform face, go out the liquid hole and switch on with the collection sediment groove.
Preferably, the urceolus inboard is provided with the flushing hole that a plurality of array distributes, the flushing hole includes vertical hole and horizontal hole, the horizontal hole is provided with a plurality ofly along the direction of height equidistance of urceolus, and one end switches on with vertical hole, and the other end extends to the urceolus and is close to the lateral wall of filter core, vertical hole extends to the top of urceolus to be located the outside of piston, slidable mounting has the apron that is used for hiding the flushing hole on the actuating lever.
Preferably, the top of the outer barrel is provided with an annular groove for communicating the plurality of flushing holes, and a filter screen is arranged in the annular groove.
Preferably, the actuating lever includes transfer line, fixed disk and connecting rod, the connecting rod is provided with four, and its one end is connected with the fixed disk, the other end and piston connection, the one end and the fixed disk of transfer line are connected, the outside of connecting rod is provided with the sleeve, the sleeve is fixed on the apron, and telescopic inboard is provided with first spring, be provided with the bulge loop that is used for compressing first spring on the connecting rod.
Preferably, the elastic limiting part comprises a limiting bolt, a second spring and a limiting sleeve, one end of the limiting bolt is in threaded connection with the embedded part, the other end of the limiting bolt extends to the lower portion of the outer barrel, the limiting sleeve is installed between the outer barrel and the limiting bolt, the second spring is located between the outer barrel and the limiting bolt, and one end, far away from the limiting bolt, of the embedded part is of a four-claw hook structure.
Preferably, the transmission mechanism comprises a tooth-shaped block, a first missing gear, a second missing gear, a motor, a driving gear and a driven gear, wherein the tooth-shaped block is installed on the transmission rod, tooth-shaped protrusions meshed with the first missing gear and the second missing gear are arranged on two sides of the tooth-shaped block, the motor, the first missing gear and the second missing gear are installed on the liquid storage barrel through a fixing seat, the driving gear is installed on the motor, the driven gear is provided with two gear parts and is connected with the first missing gear and the second missing gear through a rotating shaft, and a guide block used for limiting the sliding distance of the tooth-shaped block is arranged on the fixing seat.
Compared with the prior art, the invention has the beneficial effects that:
1. through setting up urceolus, filter core and piston, rely on drive mechanism to drive the reciprocating up-and-down movement of piston to apply certain pressure to the thick solution between urceolus and the filter core, make tea polyphenol and solvent pass through the membrane module fast, solid particle is held back, thereby realizes the high-efficient separation of tea polyphenol and draws.
2. Set up slag extractor in the bottom of urceolus, after the action is extracted in the separation of tea polyphenol for the first time, rely on the pulling force that gomphosis piece and piston cooperation produced, thereby upwards stimulate the sealing ring and form slag notch at the bottom of urceolus, make solid particle get into the collecting vessel after being erodeed by thick solution, so can guarantee that the separation of tea polyphenol for the second time draws and can not receive the influence, the separation extraction efficiency of effectual assurance tea polyphenol, and need not the manual work and dismantle spare part and clear up solid particle, thereby can realize the continuous separation of tea polyphenol and draw.
Drawings
FIG. 1 is a schematic structural view of a continuous separation and extraction apparatus for tea polyphenols according to the present invention;
FIG. 2 is a schematic view of the internal structure of a continuous separation and extraction apparatus for tea polyphenols according to the present invention;
FIG. 3 is an exploded view illustration of the outer cartridge and filter element of the present invention;
FIG. 4 is a schematic structural view of the outer tub of the present invention;
FIG. 5 is a schematic view of the mounting structure of the driving rod, cover plate and piston in the present invention;
FIG. 6 is a schematic view of the structure of the transmission mechanism of the present invention;
FIG. 7 is an enlarged view of a portion of FIG. 2 at A;
reference numerals are as follows: 1. a fixed seat; 2. a liquid storage barrel; 3. a liquid return pipe; 4. a delivery pump; 5. a collection barrel; 6. a receiving barrel; 7. an elastic limiting part; 8. a movable extrusion device; 9. a frame; 10. a liquid inlet pipe; 11. a transmission mechanism; 12. a guide block; 13. a tooth-shaped block; 14. a first gear with missing teeth; 15. a liquid outlet pipe; 16. a drive rod; 17. a piston; 18. an outer cylinder; 19. a slag discharging mechanism; 20. a filter element; 21. a cover plate; 22. a second gear with missing teeth; 23. a liquid outlet hole; 24. a vertical hole; 25. a filter screen; 26. an annular groove; 27. a horizontal hole; 28. a through hole; 29. a membrane module; 30. an engaging member; 31. a second spring; 32. a limit bolt; 33. a position limiting sleeve; 34. a seal ring; 35. a first circular table surface; 36. a sleeve; 37. fixing the disc; 38. a transmission rod; 39. a tooth-shaped bulge; 40. a connecting rod; 41. a first spring; 42. a driven gear; 43. a motor; 44. a driving gear; 45. a rotating shaft; 46. a liquid outlet gap; 47. a slag collection groove; 48. a second circular table surface.
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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
As shown in fig. 1-7, a continuous separation and extraction process of tea polyphenol is characterized by comprising the following steps:
s1: putting the dried tea leaves into a crusher for crushing treatment, and screening by using a screen to prepare tea leaf powder;
s2: soaking tea powder in water of 40-50 deg.C for 30-60min for dissolving, and filtering with cloth net for two times to obtain crude solution;
s3: adding a crude solution into the liquid storage barrel 2 from the liquid inlet pipe 10, then enabling the crude solution to enter a space between the filter element 20 and the outer barrel 18, enabling tea polyphenol and a solvent in the crude solution to pass through the membrane assembly 29 in the process that the transmission mechanism 11 drives the piston 17 to move up and down, enabling the membrane assembly 29 to adopt a reverse osmosis membrane, enabling solid particles in the crude solution to be intercepted by the membrane assembly 29, simultaneously enabling the crude solution to enter a flushing hole to flush solid particles on the inner wall of the outer barrel 18 and the surface of the membrane assembly 29, and then enabling the crude solution to enter the collection barrel 5 through the liquid outlet pipe 15 to obtain a residue liquid;
s4: after the separation and extraction of the crude solution in the liquid storage barrel 2 are completed, the residue liquid is pumped into the liquid storage barrel 2 by using the delivery pump 4 and the liquid return pipe 3 for secondary separation until the separation is completed.
As shown in fig. 1-7, a continuous separation and extraction apparatus for tea polyphenol comprises a frame 9 and a receiving barrel 6, wherein the frame 9 is provided with the receiving barrel 2, the receiving barrel 2 is connected with a liquid inlet pipe 10 which can send a crude solution into the receiving barrel 2, the bottom of the receiving barrel 2 is provided with a movable squeezing device 8, the movable squeezing device 8 can apply a certain pressure on the crude solution, so as to rapidly separate solid particles in the crude solution from a tea polyphenol mixed solution, the specific structure of the movable squeezing device 8 comprises a filter element 20, an outer barrel 18 and a piston 17, wherein the filter element 20 is a hollow structure and is fixedly installed in the center of the outer barrel 18, meanwhile, the middle of the filter element 20 is provided with a plurality of through holes 28 distributed in an array, a membrane assembly 29 is arranged outside the through holes 28, the membrane assembly 29 is a reverse osmosis membrane 29 which is fixed on the surface of the filter element 20 after being wound, the surface of the filter element 20 is kept flat with the surfaces of the upper and lower ends of the filter element 20, the lower end of the filter element 20 passes through the outer barrel 18 and is positioned above the receiving barrel 6, the piston 17 is connected with a driving rod 16 which can drive the piston to drive the piston assembly 16 to accelerate the extraction of the crude solution to move into the receiving barrel 11 and the piston 17, thereby increasing the efficiency of the extraction mechanism and the extraction mechanism of the extraction mechanism by the pressure applied pressure and the pressure of the piston 17.
The transmission mechanism 11 mainly comprises a tooth-shaped block 13, a first missing tooth gear 14, a second missing tooth gear 22, a motor 43, a driving gear 44 and a driven gear 42, wherein the tooth-shaped block 13 is installed on the driving rod 16, tooth-shaped protrusions 39 meshed with the first missing tooth gear 14 and the second missing tooth gear 22 are arranged on two sides of the tooth-shaped block 13, the motor 43, the first missing tooth gear 14 and the second missing tooth gear 22 are installed on the liquid storage barrel 2 through a fixed seat 1, the driving gear 44 is installed on the motor 43, two driven gears 42 are arranged on the driven gear 42 and are connected with the first missing tooth gear 14 and the second missing tooth gear 22 through a rotating shaft 45, a guide block 12 used for limiting the sliding distance of the tooth-shaped block 13 is arranged on the fixed seat 1, when the driving gear 44 is driven to rotate by the motor 43, the two driven gears 42 are driven to rotate synchronously, the first missing tooth gear 14 and the second missing tooth gear 22 also rotate along with the same, the two gears are sequentially meshed with the tooth-shaped block 13, the driving rod 16 can be driven to move repeatedly up and down, the driving rod 17 can provide power for the driving rod 17, and the reciprocating linear motion of the motor 43 is converted into the reciprocating motion of the piston 16, so as well as to effectively improve the separation efficiency of tea.
In order to overcome the problem that solid particles are trapped in the outer cylinder 18 in the tea polyphenol separation and extraction process, and are accumulated after a period of time of separation and extraction, and part of the solid particles are attached to the surface of the membrane component 29, so that the separation and extraction of tea polyphenol is affected, the solid particles need to be cleaned at the moment, the traditional equipment adopts a manual method to clean, not only is the labor intensity increased, but also the time for dismounting and cleaning parts is long, so that the continuous production is not facilitated, a deslagging mechanism 19 is arranged at the bottom of the outer cylinder 18 and consists of a sealing ring 34, an elastic limiting part 7 and an embedded part 30, wherein the elastic limiting part 7 and the embedded part 30 are respectively arranged at two sides of the sealing ring 34, one end of the embedded part 30 is in a four-claw hook structure, a mounting hole is formed in the piston 17, and when the piston 17 is pushed to be close to the bottom of the outer cylinder 18, the embedded part 30 is inserted into the mounting hole and deformed, the mounting hole is of a stepped structure, after the piston 17 slides to a certain position, the embedded part 30 is also completely inserted into the mounting hole and recovers to hook the piston 17, when the piston 17 is reset, the sealing ring 34 can be pulled upwards by means of the tensile force generated by the embedded part 30, the elastic limiting part 7 keeps applying an acting force close to the bottom of the outer cylinder 18 on the sealing ring 34 and can limit the distance of the upward movement of the sealing ring 34, the elastic limiting part 7 is composed of a limiting bolt 32, a second spring 31 and a limiting sleeve 33, one end of the limiting bolt 32 is in threaded connection with the embedded part 30, the other end extends to the lower part of the outer cylinder 18, the limiting sleeve 33 is installed between the outer cylinder 18 and the limiting bolt 32, the second spring 31 is located between the outer cylinder 18 and the limiting bolt 32, namely when the sealing ring 34 moves upwards for a certain distance along with the piston 17, the limiting bolt 32 is pulled to compress the second spring 31, when the limiting sleeve 33 prevents the limiting bolt 32 from moving continuously, the limiting bolt 32 can generate a pulling force on the embedded part 30, so that the embedded part 30 deforms again and is separated from the mounting hole, because the liquid outlet hole 23 is formed in the side wall position of the outer cylinder 18 corresponding to the sealing ring 34, the collecting barrel 5 is arranged on the side surface of the material receiving barrel 6, the collecting barrel 5 is connected with the liquid outlet hole 23 through the liquid outlet pipe 15, when the sealing ring 34 moves upwards, a gap is formed between the sealing ring 34 and the bottom of the outer cylinder 18, the inner diameter of the sealing ring 34 is larger than the outer diameter of the filter element 20, and a liquid outlet gap 46 is formed between the sealing ring 34 and the filter element, so that the residual coarse solution can smoothly flow into the collecting barrel 5 through the liquid outlet pipe 15, and a large amount of solid particles remained in the outer cylinder 18 cannot be accumulated.
Meanwhile, in order to ensure that the residual solid particles in the outer cylinder 18 are basically cleaned, a distance is reserved between the through hole 28 on the filter element 20 and the bottom of the outer cylinder 18, so that a certain amount of coarse solution in the outer cylinder 18 is reserved, and the solid particles are completely taken away, therefore, the structure of the outer cylinder 18 and the sealing ring 34 is improved, the bottom of the outer cylinder 18 is provided with a first circular table surface 35 matched with the sealing ring 34, the first circular table surface 35 is of a structure with a high middle part and a low periphery, the sealing ring 34 is provided with a second circular table surface 48, the second circular table surface 48 is of a structure with a high periphery and a low middle part, the bottom of the sealing ring 34 is also provided with a horizontal plane, a slag collecting groove 47 is formed between the first circular table surface 35, the liquid outlet 23 is communicated with the slag collecting groove 47, and the first circular table surface 35 and the second circular table surface 48 are utilized, after a gap is generated between the sealing ring 34 and the outer cylinder 18, the residual coarse solution can drive the solid particles to smoothly enter the slag collecting groove 47 along the first circular table surface 35 and the second circular table surface 48, and then enter the liquid outlet 15 to realize automatic cleaning of the solid particles.
Secondly, in order to clean the solid particles attached to the surface of the membrane component 29 and reduce the influence on the separation and extraction of tea polyphenol at the next time, a plurality of flushing holes distributed in an array are arranged on the inner side of the outer cylinder 18, each flushing hole comprises a vertical hole 24 and a horizontal hole 27, the horizontal holes 27 are equidistantly arranged along the height direction of the outer cylinder 18, one end of each flushing hole is communicated with the vertical hole 24, the other end of each flushing hole extends to the side wall, close to the filter element 20, of the outer cylinder 18, the vertical holes 24 extend to the top of the outer cylinder 18 and are positioned on the outer side of the piston 17, a cover plate 21 used for covering the flushing holes is slidably mounted on the driving rod 16, an annular groove 26 used for communicating the flushing holes is arranged on the top of the outer cylinder 18, a filter screen 25 is arranged in the annular groove 26, because the cover plate 21 and the piston 17 do not completely synchronous movement, namely, when the piston 17 moves in the outer cylinder 18, the cover plate 21 is kept still, and when the piston 17 is separated from the outer cylinder 18, it will drive the cover plate 21 to move upwards synchronously, but the piston 17 has a certain thickness, therefore will form the space between liquid storage barrel 2 and the cover plate 21 first, at this moment the crude solution can enter into the outer cylinder 18 from the ring channel 26, flushing hole from the flushing hole, the filter screen 25 prevents the large granule solid from blocking the flushing hole, and the crude solution has certain kinetic energy after flowing through the vertical hole 24, flow out from the horizontal hole 27, form the liquid flow column of the parabola, and produce certain horizontal impact force to the membrane module 29, thus wash off the surface and the solid granule attached to the inner wall of the bottom of the outer cylinder 18, and pile up in the bottom of the outer cylinder 18, in order to clean up after the next tea polyphenol separation and extraction, so provide the powerful condition for the continuous separation and extraction of tea polyphenol, also need not to clean up manually, the structural design is rational and ingenious, the piston 17 continues to move upwards thereafter, so that the crude dissolving liquid can be rapidly filled between the outer cylinder 18 and the filter element 20.
In addition, the driving rod 16 comprises a driving rod 38, a fixed disc 37 and a connecting rod 40, the connecting rod 40 is provided with four parts, one end of the connecting rod 40 is connected with the fixed disc 37, the other end of the connecting rod is connected with the piston 17, one end of the driving rod 38 is connected with the fixed disc 37, the other end of the driving rod passes through the liquid storage barrel 2 and is connected with the tooth-shaped block 13, the outer side of the connecting rod 40 is provided with a sleeve 36, the sleeve 36 is fixed on the cover plate 21, the inner side of the sleeve 36 is provided with a first spring 41, the connecting rod 40 is provided with a convex ring for compressing the first spring 41, the driving rod 38, the fixed disc 37 and the connecting rod 40 can ensure that the power of the driving mechanism 11 can be smoothly transmitted to the piston 17, the first spring 41 can keep the cover plate 21 reset and the sealing performance between the cover plate and the liquid storage barrel 2, so that the surface of the membrane assembly 29 is well prepared for the coarse solution, and the sealing performance can be ensured by the cooperation of the convex ring and the sleeve 36, so that the coarse solution can be prevented from entering the sleeve 36 to influence on the action of the piston 17.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.
Claims (9)
1. A continuous separation and extraction process of tea polyphenol is characterized by comprising the following steps:
s1: putting the dried tea leaves into a crusher for crushing treatment, and screening by using a screen to prepare tea leaf powder;
s2: soaking tea powder in 40-50 deg.C solvent for 30-60min for dissolving, and filtering with cloth net for two times to obtain crude solution;
s3: adding a crude solution into a liquid storage barrel (2) from a liquid inlet pipe (10), then enabling the crude solution to enter a space between a filter element (20) and an outer barrel (18), enabling tea polyphenol and a solvent in the crude solution to pass through a membrane assembly (29) in the process that a transmission mechanism (11) drives a piston (17) to move up and down, enabling solid particles in the crude solution to be intercepted by the membrane assembly (29), simultaneously enabling the crude solution to enter a flushing hole to flush solid particles on the inner wall of the outer barrel (18) and the surface of the membrane assembly (29), and then enabling the crude solution to enter a collecting barrel (5) through a liquid outlet pipe (15) to obtain residue liquid;
s4: after the crude solution in the liquid storage barrel (2) is separated and extracted, the residue liquid is pumped into the liquid storage barrel (2) by using a delivery pump (4) and a liquid return pipe (3) for secondary separation until the separation is finished.
2. The continuous separation and extraction process of tea polyphenol as claimed in claim 1, wherein the solvent is water or ethanol, and the membrane module (29) is a reverse osmosis membrane or an ultrafiltration membrane.
3. The utility model provides a continuous separation and extraction equipment of tea polyphenol, includes frame (9) and connects material bucket (6), its characterized in that, be provided with liquid storage bucket (2) on frame (9), the lateral wall of liquid storage bucket (2) is provided with feed liquor pipe (10), and the bottom is provided with movable extrusion device (8), movable extrusion device (8) are including filter core (20), urceolus (18) and piston (17), filter core (20) fixed mounting is at the center of urceolus (18), and filter core (20) are hollow structure, connect material bucket (6) to be located the below of filter core (20), be provided with a plurality of through-hole (28) on the lateral wall of filter core (20) to install membrane module (29) that are used for separating solid particle and dissolving liquid in the periphery that corresponds through-hole (28), piston (17) are located between urceolus (18) and filter core (20), and are connected with actuating lever (16) on piston (17), actuating lever (16) are installed at the top of liquid storage bucket (2), be provided with the drive mechanism (11) that is used for driving lever (16) goes up and down, sediment sealing ring (19) are arranged in the bottom of cutting mechanism (19), sediment sealing ring (7) are provided with elasticity sealing ring (19), elasticity locating part (7) and gomphosis piece (30) are installed respectively in the both sides of sealing ring (34), gomphosis piece (30) can with piston (17) joint, elasticity locating part (7) keep applying the effort that is close to urceolus (18) bottom to sealing ring (34) to can carry on spacingly to the distance of sealing ring (34) upward movement, the internal diameter of sealing ring (34) is greater than the external diameter of filter core (20) to form out liquid clearance (46) between the two, the lateral wall that urceolus (18) correspond sealing ring (34) is provided with drain hole (23), drain hole (23) are connected with drain pipe (15), the side of material receiving bucket (6) is provided with collecting vessel (5), be provided with between collecting vessel (5) and liquid storage bucket (2) and return liquid pipe (3) and delivery pump (4).
4. The continuous separation and extraction equipment of tea polyphenol according to claim 3, characterized in that the bottom of the outer cylinder (18) is provided with a first round table surface (35) matched with the sealing ring (34), the first round table surface (35) is of a structure with a high middle part and a low periphery, the sealing ring (34) is provided with a second round table surface (48), the second round table surface (48) is of a structure with a high periphery and a low middle part, the bottom of the sealing ring (34) is further provided with a horizontal plane, a residue collecting groove (47) is formed between the sealing ring and the first round table surface (35), and the liquid outlet hole (23) is communicated with the residue collecting groove (47).
5. The continuous separation and extraction equipment of tea polyphenol according to claim 3, characterized in that a plurality of flushing holes distributed in an array are arranged on the inner side of the outer cylinder (18), the flushing holes comprise vertical holes (24) and horizontal holes (27), the horizontal holes (27) are equidistantly arranged along the height direction of the outer cylinder (18), one end of each flushing hole is communicated with the vertical hole (24), the other end of each flushing hole extends to the side wall of the outer cylinder (18) close to the filter element (20), the vertical holes (24) extend to the top of the outer cylinder (18) and are positioned on the outer side of the piston (17), and a cover plate (21) for covering the flushing holes is slidably mounted on the driving rod (16).
6. The continuous separation and extraction equipment of tea polyphenol according to claim 5, characterized in that the top of the outer cylinder (18) is provided with an annular groove (26) for communicating a plurality of flushing holes, and a filter screen (25) is arranged in the annular groove (26).
7. The continuous separation and extraction equipment of tea polyphenol according to claim 5, wherein the driving rod (16) comprises a driving rod (38), a fixed disc (37) and four connecting rods (40), one end of each connecting rod (40) is connected with the fixed disc (37), the other end of each connecting rod is connected with the piston (17), one end of each driving rod (38) is connected with the fixed disc (37), a sleeve (36) is arranged on the outer side of each connecting rod (40), the sleeves (36) are fixed on the cover plate (21), the inner sides of the sleeves (36) are provided with first springs (41), and a convex ring for compressing the first springs (41) is arranged on each connecting rod (40).
8. The continuous separation and extraction equipment of tea polyphenol according to claim 7, wherein the elastic limiting member (7) comprises a limiting bolt (32), a second spring (31) and a limiting sleeve (33), one end of the limiting bolt (32) is in threaded connection with the embedded member (30), the other end of the limiting bolt extends to the lower part of the outer cylinder (18), the limiting sleeve (33) is installed between the outer cylinder (18) and the limiting bolt (32), the second spring (31) is positioned between the outer cylinder (18) and the limiting bolt (32), and one end of the embedded member (30) far away from the limiting bolt (32) is in a four-claw hook structure.
9. The continuous separation and extraction equipment of tea polyphenol according to claim 7, wherein the transmission mechanism (11) comprises a toothed block (13), a first missing gear (14), a second missing gear (22), a motor (43), a driving gear (44) and a driven gear (42), the toothed block (13) is installed on a transmission rod (38), tooth-shaped protrusions (39) meshed with the first missing gear (14) and the second missing gear (22) are arranged on two sides of the toothed block, the motor (43), the first missing gear (14) and the second missing gear (22) are installed on the liquid storage barrel (2) through a fixed seat (1), the driving gear (44) is installed on the motor (43), the driven gear (42) is provided with two teeth and is connected with the first missing gear (14) and the second missing gear (22) through a rotating shaft (45), and a guide block (12) used for limiting the sliding distance of the toothed block (13) is arranged on the fixed seat (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210981672.XA CN115253377B (en) | 2022-08-15 | Continuous separation and extraction process and extraction equipment for tea polyphenol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210981672.XA CN115253377B (en) | 2022-08-15 | Continuous separation and extraction process and extraction equipment for tea polyphenol |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115253377A true CN115253377A (en) | 2022-11-01 |
| CN115253377B CN115253377B (en) | 2024-04-30 |
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