Dark tea active ingredient extraction device

Abstract

The invention discloses a dark green tea active component extraction device, and relates to the technical field of dark green tea extraction.The extraction device comprises a supporting part, an extraction kettle and a condensation kettle are arranged on the supporting part, the extraction device further comprises a gas outlet part and a liquid inlet part, the gas outlet part and the liquid inlet part are both arranged on the extraction kettle, the gas outlet part can send high-temperature gas into the condensation kettle, and the liquid inlet part can send the high-temperature gas into the condensation kettle; the liquid inlet part can be used for feeding low-temperature extraction liquid into the extraction kettle from the condensation kettle, and the stirring part can be used for stirring dark tea and a solvent in the extraction kettle. The filter screen cylinder and other devices are arranged in the extraction kettle, so that the problems that dark green tea is in contact with the heating wall in the extraction process, so that the dark green tea is quickly coked and the extraction effect is influenced are solved, meanwhile, through mutual cooperation of the filter screen cylinder and the stirring part, solid impurities generated in the extraction process of the dark green tea are effectively isolated from a solvent, and the extraction effect is improved. And the problem that subsequent use is affected due to excessive pollution of the solvent by solid impurities is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of black tea extraction, in particular to a device for extracting active components of black tea. Background Art

[0002] Dark tea is a post-fermented tea, a unique type of tea in China. Dark tea is rich in vitamins and minerals, as well as proteins, amino acids and sugars. Dark tea needs to be actively extracted during processing. During the use of traditional dark tea active extraction equipment, workers need to manually control the extraction time of dark tea in water, which results in different tastes of dark tea after extraction and reduces the quality of dark tea extraction.

[0003] Chinese patent application number 2021113222151 discloses a system for extracting active ingredients from black tea, which relates to the technical field of black tea processing, including an extraction kettle, a heating tube is provided at the bottom of the extraction kettle, a filter plate assembly is slidably connected to the inside of the extraction kettle, and the filter plate assembly includes a filter plate A, and connecting arms are fixedly connected to both sides of the top of the filter plate A. The system for extracting active ingredients from black tea prevents the black tea extracted at the top of the filter plate assembly from piling up, thereby affecting the next extraction, prevents the black tea at the top of the anti-sticking mechanism from sticking to the bottom due to long-term non-movement during extraction, and prevents manual control of the extraction time of black tea in water, thereby causing different tastes of the extracted black tea and reducing the quality of black tea extraction.

[0004] Chinese patent application number 2023235755270 discloses a black tea active ingredient extraction device, which belongs to the field of black tea processing technology, including an extraction cylinder, a liquid outlet straight pipe fixedly connected to the middle of the bottom end of the extraction cylinder, a liquid outlet branch pipe fixedly connected to one side of the bottom end of the extraction cylinder, and control valves are provided on the outside of the liquid outlet branch pipe and the liquid outlet straight pipe, a drive motor is fixedly installed in the middle of the top end of the extraction cylinder, and a rotating shaft is fixedly connected to the output end of the drive motor. The invention intercepts the debris running out of the loading frame at the top of the liquid outlet branch pipe and the liquid outlet straight pipe through filter plates and filter discs, avoiding the extraction liquid and the black tea active ingredients from being filtered again after being poured out. In the black tea extraction device similar to the above-mentioned prior art, a stirring mechanism is usually added in the extraction device to improve the extraction efficiency when extracting black tea. However, since the active ingredients in black tea can only be fully released at a temperature close to 100°C, if the temperature does not reach the extraction temperature or exceeds the extraction temperature, the stirring of the stirring mechanism will intensify the release of bitter substances in the tea leaves and oxidize the nutrients. Since the extraction device heats the solvent continuously, the temperature of the solvent is always in a changing state. The prior art lacks the function of instantly adjusting the temperature in the extraction device and adjusting the stirring intensity according to the temperature, resulting in different tastes of black tea after extraction, and reducing the quality of black tea extraction.

[0005] Furthermore, during the extraction process of black tea, if the black tea comes into contact with the heated side wall of the extraction device under the action of the solvent and the stirring mechanism, the black tea will be charred, causing the solvent to deteriorate and become unusable.

[0006] Meanwhile, when extracting dark tea, solid impurities remaining in the dark tea are easily mixed into the extraction solvent, and the prior art lacks a device for filtering and collecting the solid impurities in the dark tea.

[0007] Therefore, it is necessary to invent a black tea active ingredient extraction device to solve the above problems. Summary of the invention

[0008] The purpose of the present invention is to provide a device for extracting active ingredients from dark tea to solve the problems raised in the above background technology.

[0009] To achieve the above object, the present invention provides the following technical solution: a device for extracting active ingredients from dark tea, comprising a support portion, on which an extraction kettle and a condensation kettle are arranged, and the extraction device further comprises: A gas outlet and a liquid inlet, both of which are arranged on the extraction kettle, the gas outlet can deliver high-temperature gas into the condensation kettle, and the liquid inlet can deliver low-temperature extract from the condensation kettle into the extraction kettle; A stirring part, which is arranged on the extraction kettle and communicated with the inside of the extraction kettle, and can stir the black tea and the solvent in the extraction kettle; The regulating part is arranged in the extraction kettle, and the regulating part includes a filter mesh cylinder, and the filter mesh cylinder is arranged in the extraction kettle. A plurality of sleeves are arranged on the filter mesh cylinder in an annular array, and a sliding part is slidably connected to the inside of one end of the sleeve close to the stirring part. The sleeve is filled with a thermal expansion medium. The sliding part can move in the sleeve and change the distance from the stirring part according to the expansion and contraction of the thermal expansion medium. At the same time, the filter mesh cylinder can be deformed by the rotation of the stirring part, and the stirring intensity and the opening size of the air outlet can be adjusted, so as to regulate the temperature in the extraction kettle.

[0010] Preferably, the adjustment part also includes a plurality of connecting rods, which are arranged in a ring array on the filter mesh cylinder and fixedly connected to the filter mesh cylinder, and one end of the plurality of sleeves filled with heat expansion medium is respectively fixedly connected to different connecting rods, and the sliding member is arranged at an end away from the connecting rod, and the heat expansion medium in the sleeve is always sealed in the sleeve.

[0011] Preferably, the ends of the multiple connecting rods away from the sleeve are commonly connected to a limit plate, the limit plate is fixedly connected to the inner cavity of the extraction kettle through a plurality of support rods, the limit plate is provided with a plurality of sliding grooves in a circular array, the sliding grooves correspond to the connecting rods one by one, and the connecting rods are slidably connected to the limit plate through the sliding grooves.

[0012] Preferably, a discharge piece is fixedly installed in the central area of ​​the limit plate, and a plurality of elastic telescopic rods are provided on the discharge piece in a circular array. The elastic telescopic rods correspond to the slide grooves one by one and are respectively arranged in different slide grooves, and the ends of the elastic telescopic rods away from the discharge piece are fixedly connected to different connecting rods.

[0013] Preferably, the gas outlet part includes an gas outlet pipe, one end of the gas outlet pipe is connected with the interior of the extraction kettle through a connecting pipe, the other end of the gas outlet pipe is connected with the interior of the condensation kettle through a hose, and a sealing cover is slidably connected to the port at one end of the gas outlet pipe connected with the interior of the extraction kettle, and a one-way valve is provided in the gas outlet pipe so that the gas can only flow into the condensation kettle through the gas outlet pipe.

[0014] Preferably, a damping member is fixedly connected to one side of the sealing cover, a branch pipe is sleeved on the outer side of the damping member, an end of the branch pipe away from the damping member is fixedly connected to a positioning member, a traction rope is provided in the positioning member, one end of the traction rope extends into the branch pipe and is fixedly connected to the damping member, the other end of the traction rope is fixedly connected to a connecting rod, a return spring is provided at one end of the damping member close to the positioning member, and the damping member can slowly return to its original position under the elastic force of the return spring.

[0015] Preferably, the stirring part includes a driving motor, a support seat is arranged below the driving motor, the driving motor is connected to the extraction kettle through the support seat, the output end of the driving motor is fixedly connected to a rotating rod, one end of the rotating rod passes through the top of the extraction kettle and extends into the extraction kettle, and a stirring member is provided at one end of the rotating rod located in the extraction kettle.

[0016] Preferably, the middle section of the rotating rod is fixedly connected with a ring sleeve, and a plurality of push blocks are arranged in a ring array on the ring sleeve. The push blocks can contact the sliding member extending out of the sleeve during rotation, and the end of the push blocks contacting the sliding member is set as a wedge surface.

[0017] Preferably, the extraction kettle is divided into an isolation chamber and a reaction chamber from top to bottom, and a heating mechanism is provided on the outside of the reaction chamber, and the heating mechanism can heat the solvent in the reaction chamber by electric heating. The stirring part, the gas outlet part and the liquid inlet part extending into the extraction kettle pass through the isolation chamber and are connected to the reaction chamber.

[0018] Preferably, an observation window is provided on the outer wall of the extraction kettle, and the observation window is connected to the reaction chamber. A plurality of locking members are provided in a ring array on the outer wall of the extraction kettle, and the locking members can open and close the extraction kettle. A plurality of feed ports are provided in a ring array on the extraction kettle, and the feed ports penetrate the isolation chamber and are connected to the reaction chamber. The liquid inlet part includes a liquid inlet pipe with the same structure as the air outlet pipe, one end of the liquid inlet pipe is connected to the bottom of the condensing kettle, and the other end of the liquid inlet pipe extends into the reaction chamber. A one-way valve is provided in the liquid inlet pipe so that the liquid can only flow into the reaction chamber in one direction.

[0019] Technical effects and advantages of the present invention: 1. The present invention arranges a filter screen cylinder and other devices in the extraction kettle to prevent the black tea from contacting the heating wall during the extraction process, which causes the black tea to be quickly carbonized and affects the extraction effect. At the same time, the filter screen cylinder and the stirring part cooperate with each other to effectively isolate the solid impurities generated in the extraction process of the black tea from the solvent, thereby preventing the solvent from being excessively contaminated by the solid impurities and affecting subsequent use.

[0020] 2. The present invention arranges a sliding part on the filter cylinder and a pushing block on the rotating rod, so that the device can adaptively adjust the stirring intensity according to the temperature of the solution, thereby avoiding the problem that the active ingredients in the black tea cannot be effectively extracted due to too low or too high temperature. At the same time, the reflux of the solvent is adjusted by the temperature, so that the solvent in the extraction kettle is always in a constant temperature and pressure state, further improving the extraction effect of the active ingredients in the black tea. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the structure of the extraction kettle of the present invention.

[0023] Figure 3 It is a schematic diagram of the internal structure of the extraction kettle of the present invention.

[0024] Figure 4 It is a schematic diagram of the explosion structure of the regulating part of the present invention.

[0025] Figure 5 It is a schematic diagram of the explosion structure of the gas outlet portion of the present invention.

[0026] Figure 6 It is a half-section schematic diagram of the internal structure of the extraction kettle of the present invention.

[0027] Figure 7 For the present invention Figure 6 Schematic diagram of the mechanism structure at A in the middle.

[0028] Figure 8This is a schematic diagram showing that the push block of the present invention does not contact the sliding member.

[0029] Fig. 9 This is a schematic diagram of the contact between the push block and the sliding member of the present invention.

[0030] In the figure: 1. supporting part; 2. extraction kettle; 21. observation window; 22. locking part; 23. feeding port; 3. condensing kettle; 4. stirring part; 41. driving motor; 42. rotating rod; 43. stirring part; 44. sleeve; 45. pushing block; 5. air outlet; 51. air outlet pipe; 52. sealing cover; 53. damping part; 54. branch pipe; 55. positioning part; 56. traction rope; 57. reset spring; 6. liquid inlet; 7. adjusting part; 71. filter screen cylinder; 72. sleeve; 73. sliding part; 74. connecting rod; 75. limiting plate; 76. slide groove; 77. unloading part; 78. elastic telescopic rod. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] like Figure 1 - Fig. 9 As shown, the first embodiment of the present invention provides a black tea active ingredient extraction device, including a support part 1, on which an extraction kettle 2 and a condensation kettle 3 are arranged, and the extraction kettle 2 is also provided with an air outlet 5 and a liquid inlet 6 connected with the condensation kettle 3, the air outlet 5 can send high-temperature gas into the condensation kettle 3, and the liquid inlet 6 can send low-temperature extraction liquid from the condensation kettle 3 into the extraction kettle 2, and the solvent in the extraction kettle 2 is circulated and refluxed under the action of high temperature by the arrangement of the liquid inlet 6 and the air outlet 5 to avoid excessive waste of the solvent, and at the same time, the temperature and pressure in the extraction kettle 2 are adjusted to make it easier to extract the active ingredients in the black tea.

[0033] In this embodiment, the extraction kettle 2 is divided into an isolation chamber and a reaction chamber from top to bottom, and a heating mechanism is provided on the outside of the reaction chamber. The heating mechanism can heat the solvent in the reaction chamber by electric heating. The stirring part 4, the gas outlet part 5 and the liquid inlet part 6 extending into the extraction kettle 2 pass through the isolation chamber and are connected to the reaction chamber.

[0034] In another embodiment of the present invention, in order to improve the extraction efficiency of black tea, a stirring part 4 is provided on the extraction kettle 2, and the stirring part 4 can stir the black tea and the solvent in the extraction kettle 2. The stirring part 4 includes a driving motor 41, and a support seat is provided below the driving motor 41. The driving motor 41 is connected to the extraction kettle 2 through the support seat. The output end of the driving motor 41 is fixedly connected with a rotating rod 42, one end of the rotating rod 42 passes through the top of the extraction kettle 2 and extends into the extraction kettle 2. A stirring member 43 is provided at one end of the rotating rod 42 located in the extraction kettle 2. The driving motor 41 is started by electronic control and drives the rotating rod 42 to rotate, so that the rotating rod 42 drives the stirring member 43 to rotate in the extraction kettle 2, thereby improving the extraction efficiency of the solvent for black tea.

[0035] In this embodiment, the gas outlet portion 5 includes a gas outlet pipe 51, one end of which is connected to the interior of the extraction kettle 2 through a connecting pipe, and the other end of the gas outlet pipe 51 is connected to the interior of the condensation kettle 3 through a hose. An observation window 21 is provided on the outer wall of the extraction kettle 2, and the observation window 21 is connected to the reaction chamber. A plurality of locking members 22 are provided in a ring array on the outer wall of the extraction kettle 2, and the locking members 22 can open and close the extraction kettle 2. A plurality of feed ports 23 are provided in a ring array on the extraction kettle 2, and the feed port 23 passes through the isolation chamber and is connected to the reaction chamber. The liquid inlet portion 6 includes a liquid inlet pipe with the same structure as the gas outlet pipe 51, one end of the liquid inlet pipe is connected to the bottom of the condensation kettle 3, and the other end of the liquid inlet pipe extends into the reaction chamber. A one-way valve is provided in the liquid inlet pipe so that the liquid can only flow into the reaction chamber in one direction. A one-way valve is provided in the gas outlet pipe 51 so that the gas can only flow into the condensation kettle 3 through the gas outlet pipe 51.

[0036] In order to prevent the black tea from contacting the heated wall of the extraction kettle 2 during the extraction process, causing the black tea to be charred and affecting the extraction effect, in another embodiment of the present invention, an adjusting part 7 is arranged in the extraction kettle 2, and the adjusting part 7 includes a filter mesh cylinder 71, and the filter mesh cylinder 71 is arranged in the extraction kettle 2. The black tea is collected in the filter mesh cylinder 71 by the arrangement of the filter mesh cylinder 71, thereby avoiding the problem of the black tea directly contacting the heated wall of the extraction kettle 2 and causing the black tea to be charred, and at the same time, it can also prevent the solid impurities generated by the black tea during the extraction process from flowing in the solvent, causing the solvent after the extraction to be too turbid and unable to be used directly.

[0037] In this embodiment, the adjustment part 7 also includes a plurality of connecting rods 74, and the plurality of connecting rods 74 are arranged in a circular array on the filter screen cylinder 71. The bottoms of the plurality of connecting rods 74 are commonly connected to a limit plate 75, and the limit plate 75 is fixedly connected to the inner cavity of the extraction kettle 2 through a plurality of support rods. The connecting rods 74 are used to enhance the overall connection strength of the filter screen cylinder 71 to prevent the filter screen cylinder 71 from being excessively bent or collapsed.

[0038] In this embodiment, a discharge piece 77 is fixedly installed in the central area of ​​the limiting plate 75. Through the setting of the discharge piece 77, when it is necessary to discharge the black tea and solid impurities in the filter cylinder 71 from the extraction kettle 2, the discharge piece 77 is controlled to open, so that the black tea and solid impurities move into the extraction kettle 2 through the discharge piece 77 and are discharged from the discharge port at the bottom of the extraction kettle 2.

[0039] To prevent the problem that when the temperature in the extraction kettle 2 does not reach the extraction temperature of the active ingredient or exceeds the extraction temperature of the active ingredient, the stirring of the stirring mechanism intensifies the release of bitter substances in the tea leaves and causes the oxidation of nutrients, resulting in different tastes of the black tea after extraction and reducing the quality of the black tea extraction.

[0040] In another embodiment of the present invention, a plurality of sleeves 72 are provided in an annular array on the filter screen cylinder 71, and a sliding member 73 is slidably connected to the inside of the sleeve 72 at one end close to the stirring part 4. The sleeve 72 is filled with a thermal expansion medium. The sliding member 73 can move in the sleeve 72 and change the distance from the stirring part 4 according to the expansion and contraction of the thermal expansion medium. At the same time, the filter screen cylinder 71 can be deformed by the rotation of the stirring part 4, and the stirring intensity and the opening size of the air outlet part 5 can be adjusted, thereby regulating the temperature in the extraction kettle 2.

[0041] In this embodiment, one end of the multiple sleeves 72 filled with heat expansion medium is fixedly connected to different connecting rods 74 respectively, the sliding member 73 is arranged at the end away from the connecting rod 74, the heat expansion medium in the sleeve 72 is always sealed in the sleeve 72, and a plurality of slide grooves 76 are provided in an annular array on the limit plate 75, the slide grooves 76 correspond one-to-one to the connecting rods 74, and the connecting rods 74 are slidingly connected to the limit plate 75 through the slide grooves 76, and a plurality of elastic telescopic rods 78 are provided in an annular array on the discharge member 77, the elastic telescopic rods 78 correspond one-to-one to the slide grooves 76 and are respectively arranged in different slide grooves 76, and the ends of the elastic telescopic rods 78 away from the discharge member 77 are fixedly connected to different connecting rods 74 respectively.

[0042] In this embodiment, a sealing cover 52 is slidably connected to the end of the air outlet pipe 51 that is connected to the inside of the extraction kettle 2. A damping member 53 is fixedly connected to one side of the sealing cover 52. A branch pipe 54 is sleeved on the outer side of the damping member 53. A positioning member 55 is fixedly connected to the end of the branch pipe 54 away from the damping member 53. A traction rope 56 is provided in the positioning member 55. One end of the traction rope 56 extends into the branch pipe 54 and is fixedly connected to the damping member 53. The other end of the traction rope 56 is fixedly connected to the connecting rod 74. A reset spring 57 is provided at the end of the damping member 53 close to the positioning member 55. The damping member 53 can be slowly reset under the elastic force of the reset spring 57.

[0043] The middle section of the rotating rod 42 is fixedly connected with a ring sleeve 44, on which a plurality of push blocks 45 are arranged in a ring array. The push blocks 45 can contact the sliding member 73 extending out of the sleeve 72 during the rotation process, and the end of the push block 45 in contact with the sliding member 73 is set as a wedge surface.

[0044] When in use, firstly, the black tea is fed into the extraction kettle 2 through the feed port 23 provided on the extraction kettle 2, and the solvent for extracting the active components of the black tea is added into the extraction kettle 2, and then the heating mechanism provided on the side wall of the extraction kettle 2 is electrically controlled to heat the solvent in the extraction kettle 2. In this process, the driving motor 41 is electrically controlled to rotate, so that the driving motor 41 drives the stirring member 43 to rotate inside the filter screen cylinder 71, thereby breaking up the black tea added into the filter screen cylinder 71, so as to facilitate the full contact between the solvent and the black tea. At this time, since the temperature of the solvent in the extraction kettle 2 is relatively low, the expansion amount of the thermal expansion medium provided in the sleeve 72 is insufficient to push the sliding member 73 to contact with the pushing block 45. At this time, the solvent in the extraction kettle 2 is in a low stirring state, thereby preventing the inactive components in the black tea from being extracted in large quantities due to the excessively low temperature of the solvent in the extraction kettle 2, resulting in excessive contamination of the solvent.

[0045] As the heating mechanism continues to heat the extraction kettle 2, the temperature of the solvent in the extraction kettle 2 will gradually increase, and the expansion degree of the heat expansion medium set in the sleeve 72 will gradually increase. When the temperature of the solvent reaches the extraction temperature of the active ingredient, the heat expansion medium set in the sleeve 72 can push the sliding member 73 to move in the direction of the pushing block 45, and make the sliding member 73 and the pushing block 45 contact each other. In this state, since the pushing block 45 is fixedly connected to the stirring member 43, the pushing block 45 will rotate synchronously under the drive of the stirring member 43. When the pushing block 45 contacts the sliding member 73 during the rotation process, the pushing block 45 can squeeze and push the sliding member 73 to move in the direction away from the pushing block 45. At this time, due to the expansion of the heat expansion medium, the sliding member 73 The filter screen cylinder 71 cannot move into the sleeve 72, but is pushed by the sleeve 72 to move the connecting rod 74, so that the filter screen cylinder 71 changes from a circular shape to an elliptical shape. When the push block 45 is separated from the sliding member 73 during the rotation process, the bottom of the connecting rod 74 is connected to the elastic telescopic rod 78, and the connecting rod 74 can be driven to return to the initial position under the action of elastic force, so that the filter screen cylinder 71 changes from an elliptical shape to a circular shape again. The push block 45 intermittently contacts the sliding member 73 during the rotation process, and the elastic force of the elastic telescopic rod 78 causes the filter screen cylinder 71 to continuously perform periodic deformation between a circular shape and an elliptical shape in this state, so that the black tea in the filter screen cylinder 71 continuously surges and cooperates with the stirring of the stirring member 43, thereby improving the extraction efficiency of the active components in the black tea.

[0046] It should be noted that, since the deformation degree of the filter screen cylinder 71 is affected by the temperature of the solvent, when the temperature of the solvent is lower than the extraction temperature range required for the active ingredient, the filter screen cylinder 71 cannot be deformed, and the extraction kettle 2 is in a low-level stirring state, which makes it easier to break up the black tea and fully mix it with the solvent. When the temperature of the solvent is within the extraction temperature range required for the active ingredient, the filter screen cylinder 71 begins to deform, thereby improving the stirring effect on the black tea and the solvent, and further improving the extraction efficiency of the active ingredient. The higher the temperature, the greater the deformation degree of the filter screen cylinder 71 and the better the stirring effect, thereby achieving adaptive adjustment of the stirring intensity in the extraction kettle 2 to avoid excessive extraction of inactive substances in the black tea.

[0047] In order to prevent the temperature of the solvent in the extraction kettle 2 from exceeding the extraction temperature range required by the active ingredient under the continuous heating of the heating mechanism, and to avoid excessive pressure in the extraction kettle 2, which would reduce the extraction efficiency, a positioning member 55 is provided on the reaction chamber of the extraction kettle 2, and one end of the traction rope 56 is connected to a connecting rod 74, and the other end is connected to the damping member 53. When the connecting rod 74 moves toward the side wall of the extraction kettle 2 driven by the pushing block 45, the connecting rod 74 can pull the traction rope 56 to move synchronously in the direction away from the rotating rod 42. In this state, the other end of the traction rope 56 can drive the damping member 53 to rotate. 53 moves toward the direction close to the branch pipe 54, so that the sealing cover 52 slides on the air inlet end of the air outlet pipe 51, so that the reaction chamber in the extraction kettle 2 is connected with the air outlet pipe 51, and through the reciprocating deformation of the filter screen cylinder 71, the gas is sent into the condensation kettle 3 through the air outlet pipe 51 for condensation, and refluxes into the extraction kettle 2 through the liquid inlet part 6, so that the temperature in the extraction kettle 2 remains stable when it is heated to the extraction temperature range of the active ingredient, effectively avoiding the problem that the solvent temperature in the extraction kettle 2 exceeds the extraction temperature range required by the active ingredient under the continuous heating of the heating mechanism, and avoiding the problem that the air pressure in the extraction kettle 2 is too high, resulting in reduced extraction efficiency.

[0048] It should be noted that, through the setting of the damping member 53, when the pushing block 45 and the sliding member 73 are separated from each other, the connecting rod 74 moves in the direction close to the rotating rod 42. At this time, under the action of the return spring 57, the damping member 53 can slowly move in the direction of the rotating rod 42, thereby extending the connection between the air outlet pipe 51 and the extraction kettle 2, and the movement stroke of the damping member 53 is proportional to the temperature in the extraction kettle 2, that is, the higher the temperature, the greater the movement of the damping member 53, the larger the opening of the air outlet pipe 51, and the greater the air outlet volume, thereby realizing dynamic regulation of the solvent temperature in the extraction kettle 2.

[0049] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for extracting active ingredients from dark tea, comprising a support portion (1), wherein an extraction kettle (2) and a condensation kettle (3) are arranged on the support portion (1), characterized in that: The extraction device also includes: a gas outlet (5) and a liquid inlet (6), wherein the gas outlet (5) and the liquid inlet (6) are both arranged on the extraction kettle (2), the gas outlet (5) can deliver high-temperature gas into the condensation kettle (3), and the liquid inlet (6) can deliver low-temperature extract from the condensation kettle (3) into the extraction kettle (2); a stirring portion (4), the stirring portion (4) being arranged on the extraction kettle (2) and being in communication with the interior of the extraction kettle (2), the stirring portion (4) being capable of stirring the black tea and the solvent in the extraction kettle (2); An adjusting portion (7), the adjusting portion (7) being arranged in the extraction kettle (2), the adjusting portion (7) comprising a filter screen cylinder (71), the filter screen cylinder (71) being arranged in the extraction kettle (2), a plurality of sleeves (72) being arranged in an annular array on the filter screen cylinder (71), a sliding member (73) being slidably connected to the inside of one end of the sleeve (72) close to the stirring portion (4), the sleeve (72) being filled with a heat expansion medium, the sliding member (73) being able to move in the sleeve (72) and change the distance from the stirring portion (4) according to the expansion and contraction of the heat expansion medium, and at the same time being able to drive the filter screen cylinder (71) to deform through the rotation of the stirring portion (4), thereby adjusting the stirring intensity and the opening size of the gas outlet portion (5), thereby regulating the temperature in the extraction kettle (2).

2. The extraction device according to claim 1, characterized in that: The regulating portion (7) further comprises a plurality of connecting rods (74), the plurality of connecting rods (74) being arranged in an annular array on the filter screen cylinder (71) and fixedly connected to the filter screen cylinder (71), the plurality of sleeves (72) having one end filled with a heat expansion medium being respectively fixedly connected to different connecting rods (74), the sliding member (73) being arranged at an end away from the connecting rods (74), and the heat expansion medium in the sleeve (72) being always sealed in the sleeve (72).

3. The extraction device according to claim 2, characterized in that: The ends of the plurality of connecting rods (74) away from the sleeve (72) are commonly connected to a limit plate (75), the limit plate (75) being fixedly connected to the inner cavity of the extraction kettle (2) via a plurality of support rods, the limit plate (75) being provided with a plurality of slide grooves (76) in an annular array, the slide grooves (76) corresponding to the connecting rods (74) one by one, and the connecting rods (74) being slidably connected to the limit plate (75) via the slide grooves (76).

4. The extraction device according to claim 3, characterized in that: A discharge piece (77) is fixedly mounted in the central area of ​​the limit plate (75), and a plurality of elastic telescopic rods (78) are arranged in a ring array on the discharge piece (77). The elastic telescopic rods (78) correspond to the slide grooves (76) one by one and are respectively arranged in different slide grooves (76), and one end of the elastic telescopic rods (78) away from the discharge piece (77) is fixedly connected to different connecting rods (74).

5. The extraction device according to claim 4, characterized in that: The gas outlet portion (5) comprises a gas outlet pipe (51), one end of the gas outlet pipe (51) is connected to the interior of the extraction kettle (2) via a connecting pipe, and the other end of the gas outlet pipe (51) is connected to the interior of the condensation kettle (3) via a hose, and a sealing cover (52) is slidably connected to a port at one end of the gas outlet pipe (51) connected to the interior of the extraction kettle (2), and a one-way valve is provided in the gas outlet pipe (51) so that gas can only flow into the condensation kettle (3) through the gas outlet pipe (51).

6. The extraction device according to claim 5, characterized in that: A damping member (53) is fixedly connected to one side of the sealing cover (52); a branch pipe (54) is sleeved on the outer side of the damping member (53); an end of the branch pipe (54) away from the damping member (53) is fixedly connected to a positioning member (55); a traction rope (56) is provided in the positioning member (55); one end of the traction rope (56) extends into the branch pipe (54) and is fixedly connected to the damping member (53); the other end of the traction rope (56) is fixedly connected to a connecting rod (74); a return spring (57) is provided at one end of the damping member (53) close to the positioning member (55); and the damping member (53) can be slowly returned to its original position under the elastic force of the return spring (57).

7. The extraction device according to claim 6, characterized in that: The stirring portion (4) comprises a driving motor (41), a support base is provided below the driving motor (41), the driving motor (41) is connected to the extraction kettle (2) via the support base, a rotating rod (42) is fixedly connected to the output end of the driving motor (41), one end of the rotating rod (42) passes through the top of the extraction kettle (2) and extends into the extraction kettle (2), and a stirring member (43) is provided at one end of the rotating rod (42) located in the extraction kettle (2).

8. The extraction device according to claim 7, characterized in that: The middle section of the rotating rod (42) is fixedly connected to a ring sleeve (44), and a plurality of push blocks (45) are provided on the ring sleeve (44) in an annular array. The push blocks (45) can contact a sliding member (73) extending out of the sleeve (72) during the rotation process, and one end of the push block (45) in contact with the sliding member (73) is arranged as a wedge-shaped surface.

9. The extraction device according to claim 8, characterized in that: The extraction kettle (2) is divided into an isolation chamber and a reaction chamber at the top and bottom, and a heating mechanism is provided on the outside of the reaction chamber. The heating mechanism can heat the solvent in the reaction chamber by means of electric heating. The stirring portion (4), the gas outlet portion (5) and the liquid inlet portion (6) extending into the extraction kettle (2) penetrate the isolation chamber and are connected to the reaction chamber.

10. The extraction device according to claim 9, characterized in that: An observation window (21) is provided on the outer wall of the extraction kettle (2), and the observation window (21) is connected to the reaction chamber. A plurality of locking members (22) are provided in an annular array on the outer wall of the extraction kettle (2), and the locking members (22) can open and close the extraction kettle (2). A plurality of feed ports (23) are provided in an annular array on the extraction kettle (2), and the feed ports (23) penetrate the isolation chamber and are connected to the reaction chamber. The liquid inlet portion (6) comprises a liquid inlet pipe having the same structure as the gas outlet pipe (51), one end of the liquid inlet pipe is connected to the bottom of the condensation kettle (3), and the other end of the liquid inlet pipe extends into the reaction chamber. A one-way valve is provided in the liquid inlet pipe so that the liquid can only flow into the reaction chamber in one direction.

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