A protease extraction device with self-cleaning function and its use method

Abstract

The invention discloses a protease extraction device with a self-cleaning function and a method for using the same, and relates to the technical field of protease extraction. The invention aims to solve the technical problem that after protease extracting liquid is extracted from papaya pulp by an extraction tank, residual pulp containing sugar and sticky substances is easily attached to the inner wall of the tank body, and is difficult to clean after cooling. The invention comprises an extraction tank body, a motor and a drive shaft, wherein the motor is fixedly installed at the center of the bottom end of the extraction tank body, and the motor shaft of the motor extends to one end in the extraction tank body and is fixedly connected to the drive shaft, and the top end of the drive shaft is rotatably connected to the top of the extraction tank body, and an adjustable stirring mechanism rotatably arranged in the extraction tank body is installed on the outer edge surface of the drive shaft. The invention realizes self-cleaning of the extraction tank body by switching the direction of rotation, avoids the problem that the attached impurities are difficult to scrape off due to complete cooling of the papaya pulp after extraction, and avoids the problem that the impurities affect the quality of the extract.

Description

Technical Field

[0001] The present invention relates to the technical field of protease extraction, and more particularly to a protease extraction device with a self-cleaning function and a use method thereof. Background Art

[0002] Proteases are a class of enzymes that can catalyze the hydrolysis of proteins. They are strictly selective, and a protease can only act on certain peptide bonds in protein molecules. There are many types of proteases, including pepsin, trypsin, cathepsin, papain, and subtilisin. They are mainly found in the digestive tract of humans and animals, and are also abundant in plants and microorganisms.

[0003] At present, papain, as an important proteolytic enzyme, is widely used in food, medicine, feed, daily chemicals, leather and textile industries due to its high enzyme activity, good thermal stability and natural hygiene and safety. Its extraction needs to go through raw material pretreatment, preliminary extraction, ultrafiltration, fine treatment, drying and packaging.

[0004] Among them, when the papaya slurry is extracted through the extraction tank, the cell wall of the papaya slurry will be broken during the pretreatment process. Since the papaya cell slurry is relatively viscous and the papaya slurry contains sticky substances such as polysaccharides and pectin, when the extraction tank is heated to separate papain from some low-boiling point impurities, the separated impurities are easy to adhere to the inner wall of the extraction tank. After the protease extraction of a single material is completed, the inner wall of the extraction tank needs to be cleaned. Since it is necessary to wait for the protease extract to be discharged during cleaning, the residual slurry inside adheres to the inner wall of the tank after cooling, which is difficult to clean. In view of this, we propose a protease extraction device with a self-cleaning function and a method for using the same. Summary of the invention

[0005] The purpose of the present invention is to provide a protease extraction device with a self-cleaning function and a method of using the same, so as to solve the technical problem that after the protease extract is extracted from the papaya slurry through an extraction tank, the residual slurry containing sugars and sticky substances is easily attached to the inner wall of the tank and is difficult to clean after cooling.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a protease extraction device with a self-cleaning function, comprising an extraction tank body, a motor and a drive shaft;

[0007] The motor is fixedly installed at the center of the bottom end of the extraction tank body, and the motor shaft of the motor extends to one end inside the extraction tank body and is fixedly connected to the drive shaft, and the top end of the drive shaft is rotatably connected to the top of the extraction tank body;

[0008] An adjustable stirring mechanism rotatably arranged in the extraction tank body is installed on the outer edge surface of the driving shaft, and the adjustable stirring mechanism includes two delayed planetary mechanisms, a plurality of spiral stirring components, two guide mechanisms and an infusion pipeline connected to the plurality of spiral stirring components. The two delayed planetary mechanisms are respectively installed at the bottom and the top of the outer edge surface of the driving shaft, and the plurality of spiral stirring components are connected between the two delayed planetary mechanisms in a ring array. The two guide mechanisms are respectively connected to the corresponding delayed planetary mechanisms, and the two guide mechanisms have an unfolded guide state and a folded state. The two guide mechanisms are located at the center between the plurality of spiral stirring components, and the two guide mechanisms in the unfolded guide state form an up and down reflux action for the slurry from the upper and lower sides.

[0009] Several of the spiral stirring components cooperate with the delayed planetary mechanism to form a retracting action for stirring the slurry and an expanding action for scraping off the residual slurry. When the spiral stirring component is in a retracted state, it is located at the center of the extraction tank body, and the top end of the rotating spiral stirring component is in front when it is in the retracted state. When the spiral stirring component is in an expanded state, it abuts against the inner wall of the extraction tank body, and the bottom end of the rotating spiral stirring component is in front when it is in the expanded state.

[0010] The present invention realizes cleaning of the attachments on the inner wall of the extraction tank body after the protease extraction is completed by using a motor provided with a driving shaft and an adjustable stirring mechanism. During cleaning, the driving shaft is driven by the motor to rotate counterclockwise, so that the delayed planetary mechanism provided with a plurality of spiral stirring assemblies through the driving shaft rotates, and the plurality of spiral stirring assemblies are unfolded, so that the plurality of spiral stirring assemblies in the unfolded state are affected by the driving shaft to scrape the impurities of the papaya extract attached to the inner wall of the extraction tank body. When the spiral blades scrape the impurities attached to the inner wall of the extraction tank body, since the bottom end is in front when the spiral blades are in the unfolded state, the impurities are scraped up and moved up along the inner wall, and the impurities are pushed to the top of the extraction tank body to separate from the liquid surface. After the extraction liquid is discharged, the impurities are continuously pushed to the top of the extraction tank and fall, thereby completing the cleaning of the impurities on the inner wall, avoiding the problem that the attached impurities are difficult to scrape off after complete cooling, and realizing the self-cleaning of the extraction tank body by switching the direction, and avoiding the problem that the impurities affect the quality of the extraction liquid.

[0011] Preferably, the delayed planetary mechanism comprises a sun gear, a lower housing and an upper housing which are covered on the sun gear from upper and lower sides, and a plurality of planetary assemblies;

[0012] The sun gear is fixedly mounted on the outer edge surface of the drive shaft;

[0013] The lower shell is provided with a plurality of fixed seats, and the upper shell is provided with a plurality of movable seats, wherein the movable seats are movably provided with fixing bolts threadedly connected to the fixed seats, and the lower shell and the upper shell are both rotatably provided on the outer edge surface of the driving shaft;

[0014] The planetary assembly is rotatably installed in the lower shell and the upper shell in an annular array, and the planetary assembly is meshed with the sun gear. The spiral stirring assembly is fixed on the outer edge surface of the planetary assembly extending from one end of the lower shell, and the end of the planetary assembly extending from the lower shell is fixedly connected to the flow guide mechanism.

[0015] Preferably, the planetary assembly includes an axle, two planetary wheels and a bidirectional locking assembly, the bottom and top ends of the upper shell and the lower shell are provided with a plurality of through holes in a circular array, and the axle is rotatably arranged in the two through holes, and the planetary wheels are symmetrically rotatably installed on both sides of the outer edge surface of the axle.

[0016] Preferably, the bidirectional locking assembly includes a fixing ring, which is centrally fixedly installed on the outer edge surface of the shaft, and extension arms are constructed on both sides of the fixing ring, and a pawl is constructed at one end of the extension arm away from the fixing ring, and the pawl is engaged with the sun gear.

[0017] The guide mechanism includes a plurality of flexible guide blades and a plurality of folding mechanisms.

[0018] A plurality of the flexible guide blades in the unfolded state form an annular guide convex disc;

[0019] The folding mechanism comprises a support, a guide rod, and a slide seat, wherein the top end of the guide rod is rotatably connected to one end of the support, and the other end of the guide rod is fixedly connected to the shaft rod, and the other end of the support is fixedly connected to the lower shell, and the slide seat is slidably arranged on the guide rod, and spiral guide keys are constructed on both sides of the slide seat, and two spiral grooves corresponding to the spiral guide keys are opened on the outer edge surface of the guide rod;

[0020] A load-bearing rod A is hingedly installed on one side of the support, a load-bearing rod B is hingedly installed on one side of the sliding seat, one end of the load-bearing rod B is hingedly connected to the load-bearing rod A in the center, and a pull rod A is hingedly installed on the side of the load-bearing rod B close to the load-bearing rod A, the load-bearing rod A and the flexible guide blade are hingedly connected to a hinge seat A, and a pull rod B is fixedly installed on one end of the hinge seat A, a load-bearing rod C is hingedly installed on the side of the load-bearing rod A close to the hinge seat A, and one end of the load-bearing rod C and the pull rod B are hingedly connected to a hinge seat B, the hinge seat B is fixed to one side of the bottom end of the flexible guide blade, and the other side of the bottom end of the flexible guide blade is fixedly connected to the support.

[0021] Preferably, the spiral stirring assembly includes a spiral blade, the top and bottom ends of the spiral blade are respectively constructed with a support arm A and a support arm B, and the support arm A and the support arm B are respectively fixedly installed on the corresponding shaft rod, the spiral blade has an arc-shaped stirring slope and an arc-shaped scraping slope, and a plurality of through holes are equidistantly opened on one side of the spiral blade close to the arc-shaped stirring slope, and a flushing assembly is fixedly installed in the plurality of through holes.

[0022] Preferably, the infusion pipeline includes a lower connector fixedly arranged at the top end of the outer edge surface of the driving shaft and an upper connector rotatably arranged at the top end of the outer edge surface of the driving shaft, the lower connector is rotatably connected and connected to the upper connector, a plurality of hoses are connected to the outer edge surface of the lower connector, and a plurality of input tubes are connected to the outer edge surface of the upper connector.

[0023] Preferably, the flushing assembly includes a plurality of flushing pipes, and the plurality of flushing pipes are respectively fixedly installed in the corresponding through holes, and a delivery pipe connected to a hose is commonly fixedly installed at one end of the plurality of flushing pipes, a nozzle is fixedly installed at one end of the flushing pipe away from the delivery pipe, and a flat flow spray cavity is opened at one end of the nozzle.

[0024] Preferably, the extraction tank body includes a lower tank body and an upper tank body, the upper tank body is fixedly arranged on the top of the lower tank body, and a plurality of supporting legs are arranged in a circular array at the bottom of the outer edge surface of the upper tank body, a climbing frame is arranged on the top of the outer edge surface of the upper tank body extending to one side of the lower tank body, the bottom end of the lower tank body is connected with a feeding pipe, and the top of one side of the outer edge surface of the upper tank body is connected with a feeding pipe, a liquid level meter is connected between the top of one side of the upper tank body and the bottom of one side of the lower tank body, one side of the top end of the upper tank body is connected with a tank mouth extension pipe, and one side of the tank mouth extension pipe is hingedly installed with a tank cover arranged on the top of the tank mouth extension pipe.

[0025] Preferably, a method for using a protease extraction device with a self-cleaning function comprises the following steps:

[0026] S1, raw material pretreatment;

[0027] Select fresh, unripe papaya fruits, and gradually process them through a washing machine and a crushing machine to obtain papaya pulp for later use;

[0028] S2, gathering and stirring;

[0029] The papaya slurry is transported into the main body of the extraction tank, and then the driving shaft is driven by the motor to rotate clockwise, so that the adjustable stirring mechanism is driven by the driving shaft to rotate in the main body of the extraction tank. In the initial stage of rotation, the sun wheel is driven by the driving shaft to rotate, so as to drive a plurality of shafts with two planetary wheels to rotate, and then drive the spiral stirring assembly to rotate with the two shafts as the axis, and deflect to one side of the driving shaft. After deflecting to a specified position, a ratchet provided at one end of the extension arm abuts against the sun wheel and meshes with the sun wheel, so as to complete the position limiting of the shaft, so that the plurality of spiral stirring assemblies enter a retracted state;

[0030] At the same time, the guide rod is driven to rotate by the self-rotation of the shaft rod, and then the slide seat is driven to slide on the guide rod, so that the bearing rod A is pushed and lifted by the bearing rod B, and the hinge seat B is further lifted by the bearing rod C, the pull rod A, the hinge seat A, and the pull rod B, so as to realize the expansion of the flexible guide blades; after the expansion of a plurality of flexible guide blades and the folding of a plurality of spiral blades are completed, the plurality of flexible guide blades and the plurality of spiral blades are driven to rotate by the driving shaft, so that the papaya slurry in the main body of the extraction tank is stirred by the plurality of spiral blades, and the papaya slurry at the center of the main body of the extraction tank is pushed and moved by the arc-shaped stirring inclined surface on the spiral blade, and the annular guide convex disk formed when the plurality of flexible guide blades are expanded rotates from the upper and lower sides and pushes the slurry to flow back, so as to form a circulating stirring of the papaya slurry;

[0031] S3, heating treatment;

[0032] During stirring, the papaya slurry is heated by the extraction tank body, and preliminary separation is performed according to the difference in boiling points of papain and impurities by controlling the heating temperature and the cooling temperature, so that the papain in the papaya slurry is separated from some low-boiling-point impurities during the heating process;

[0033] S4, inner wall cleaning;

[0034] After the extraction tank body stops heating the papaya slurry and allows the papaya slurry to gradually cool, the motor drives the drive shaft to rotate counterclockwise, thereby driving the adjustable stirring mechanism to rotate in the extraction tank body through the drive shaft. In the early stage of rotation, the drive shaft drives the sun gear to rotate, thereby driving a plurality of shafts with two planetary gears to rotate, and then driving the spiral stirring assembly to rotate with the two shafts as the axis, deflecting to the side away from the drive shaft, and abutting against the inner wall of the extraction tank body. After deflecting to a specified position, one end of the other extension arm The ratchet is arranged to abut against the sun gear and mesh with the sun gear to complete the position limiting of the shaft, so that the plurality of spiral stirring components enter the unfolded state, and the two flow guide mechanisms enter the folded state and move in a circular manner around the driving shaft, so that the impurities attached to the inner wall are scraped by the plurality of spiral blades abutting against the inner wall of the extraction tank body, and the impurities attached to the inner wall of the extraction tank body are scraped upward by the arc-shaped hanging material inclined surface on the spiral blade, so that the impurities are separated from the liquid surface when they move upward to the top of the extraction tank body, thereby cooling the extract;

[0035] S5, separation and discharge processing;

[0036] After the papaya extract is cooled, the separated papaya extract is transported to a condenser, and the preliminary extract is collected through the condenser;

[0037] S6, impurity discharge treatment;

[0038] After the papaya extract is discharged, the spiral blades continue to scrape the remaining impurities, so that when they reach the top of the extraction tank, they fall to the bottom of the extraction tank body, thus completing the cleaning of the impurities extracted from the papaya slurry;

[0039] S7, flushing treatment;

[0040] After the preliminary scraping treatment of the impurities attached to the inner wall of the extraction tank body is completed, the cleaning liquid is pumped into an upper connector provided with a plurality of input pipes through an external device, and then pumped into a plurality of delivery pipes through lower connectors provided with a plurality of hoses, and then shunted into a plurality of flushing pipes through the delivery pipes, and the cleaning liquid is discharged through a nozzle provided with a flat flow spray cavity, forming a flat water flow to flush the inner wall of the extraction tank body, and the residual impurities are flushed, and the residual papaya slurry is further cleaned in cooperation with a spiral blade abutting against the inner wall of the extraction tank body;

[0041] S8, ultrafiltration treatment;

[0042] filtering the preliminary extract through an ultrafiltration membrane to intercept macromolecular impurities and obtain a clarified solution containing papain;

[0043] S9, fine processing;

[0044] The clarified liquid is subjected to a refining treatment, and impurities are further removed through two-phase aqueous extraction, salting out, and precipitation to improve the purity of papain;

[0045] S10, dry packaging treatment;

[0046] The refined papain solution is dried to obtain papain powder, which is then packaged and stored.

[0047] Compared with the prior art, the present invention has the following beneficial effects:

[0048] 1. The present invention uses a motor with a drive shaft and an adjustable stirring mechanism to clean the attachments on the inner wall of the extraction tank body after the protease extraction is completed. During cleaning, the motor drives the drive shaft to rotate counterclockwise, thereby driving the sun wheel to rotate through the drive shaft, and the sun wheel drives a plurality of shafts with two planetary wheels to rotate, thereby driving the spiral stirring components arranged at one end of the shaft to rotate, and completing the deployment of the plurality of spiral stirring components. After deployment, the ratchet at one end of the extension arm abuts against the sun wheel and meshes, thereby achieving the limit of the spiral stirring components, and making the plurality of spiral stirring components in the deployed state The mixing component is affected by the driving shaft to scrape the impurities of the papaya extract attached to the inner wall of the extraction tank body. When the spiral blades scrape the impurities attached to the inner wall of the extraction tank body, the arc-shaped scraping slope thereon will scrape up the impurities and move them up along the inner wall, pushing the impurities to the top of the extraction tank body to separate from the liquid surface. After the extraction liquid is discharged, the impurities are continued to be pushed to the top of the extraction tank and fall, thereby completing the cleaning of the impurities on the inner wall, avoiding the problem of difficulty in scraping off the attached impurities after complete cooling, and realizing self-cleaning of the extraction tank body through switching of the steering direction, and avoiding the problem of impurities affecting the quality of the extraction liquid.

[0049] 2. The present invention also achieves stirring of the papaya slurry after heating the papaya slurry by means of an electric motor provided with a drive shaft and an adjustable stirring mechanism so that the papaya slurry is heated evenly. During the stirring process, the drive shaft is driven by the electric motor to rotate clockwise, thereby driving the sun gear to rotate through the drive shaft to drive a number of shafts provided with two planetary gears to rotate, thereby completing the folding of a number of spiral stirring assemblies, and making the ratchet at one end of the extension arm abut against and mesh with the sun gear, thereby achieving the limit of the spiral stirring assemblies, and driving a number of spiral stirring assemblies through the drive shaft to complete the stirring of the papaya extract at the central column in the main body of the extraction tank. During stirring, the papaya slurry at the center of the main body of the extraction tank is pushed downward by the arc-shaped stirring inclined surface on the spiral blade, so that when it moves downward to the bottom of the main body of the extraction tank, it flows upward along the inner wall of the main body of the extraction tank, forming a circulating stirring of the papaya slurry, and the extraction of the papaya slurry is completed in cooperation with heating, thereby improving the extraction rate of protease.

[0050] 3. The present invention also uses several spiral blades with flushing components to initially scrape off impurities attached to the inner wall of the extraction tank body, and then pumps the cleaning liquid into an upper connector with several input pipes through an external device, and then pumps it into several delivery pipes through lower connectors provided on several hoses, and then diverts it to several flushing pipes through the delivery pipes, and discharges the cleaning liquid through a nozzle with a flat flow spray cavity, forming a flat water flow to flush the inner wall of the extraction tank body, flushing the residual impurities, and cooperates with the spiral blades abutting against the inner wall of the extraction tank body to complete the further cleaning of the residual papaya slurry, further improving the cleaning effect of the impurities.

[0051] 4. The present invention also stirs the slurry through two guide mechanisms in conjunction with a number of spiral stirring assemblies to promote slurry reflux. When the several spiral stirring assemblies are folded, the guide rod is driven to rotate by the self-rotation of the shaft rod, and then the slide seat is driven to slide on the guide rod, so that the load-bearing rod A is pushed and lifted by the load-bearing rod B, and the hinged seat B is further lifted by the load-bearing rod C, the pull rod A, the hinged seat A, and the pull rod B to realize the deployment of the flexible guide blades. The annular guide convex disk formed when the several flexible guide blades are deployed, the papaya slurry in the extraction tank body is stirred by the several spiral blades, and when the arc-shaped stirring slope on the spiral blade pushes the papaya slurry at the center of the extraction tank body to move, the upper and lower sides rotate and push the slurry to reflux, forming a circulating stirring of the papaya slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0053] Figure 2 It is a schematic diagram of the internal structure of the present invention in a cross-sectional state;

[0054] Figure 3 It is a schematic diagram of the structure of the present invention in an upward-looking state;

[0055] Figure 4 It is a structural schematic diagram of the lower tank body and the adjustable stirring mechanism in the inner wall cleaning state of the present invention;

[0056] Figure 5 It is a schematic diagram of the structure of the adjustable stirring mechanism in the present invention in the unfolded state;

[0057] Figure 6 It is a schematic diagram of the bottom structure of the adjustable stirring mechanism in the present invention in the unfolded state;

[0058] Figure 7 It is a structural schematic diagram of the lower tank body and the adjustable stirring mechanism in the slurry stirring state of the present invention;

[0059] Figure 8It is a structural schematic diagram of the adjustable stirring mechanism in the present invention in a retracted state;

[0060] Fig. 9 It is a schematic diagram of the split structure of the drive shaft and the delayed planetary mechanism in the present invention in a matching state;

[0061] Fig.10 It is a schematic diagram of the structure of the sun gear and the planetary assembly in the present invention in a matching state;

[0062] Fig.11 It is a structural schematic diagram of the bidirectional locking assembly in the present invention;

[0063] Fig.12 It is a structural schematic diagram of the spiral stirring assembly in the present invention;

[0064] Fig.13 For the present invention Fig.12 A magnified schematic diagram of the structure at center A;

[0065] Fig.14 It is a schematic diagram of the split structure of the delayed planetary mechanism and the flow guide mechanism in the present invention in a matching state;

[0066] Fig.15 It is a schematic diagram of the material stirring flow path of the adjustable stirring mechanism in the present invention in the retracted state;

[0067] Fig.16 It is a schematic diagram of the coordination structure of the flow guiding mechanism in the present invention in the unfolded state;

[0068] Fig.17 It is a schematic diagram of the structure of the flexible guide blade and the folding mechanism in the present invention in a coordinated state.

[0069] Description of the numbers in the figure:

[0070] 1. Motor; 2. Drive shaft; 3. Adjustable stirring mechanism; 301. Lower connector; 302. Upper connector; 303. Input pipe; 304. Hose;

[0071] 4. Delayed planetary mechanism; 401. sun gear; 402. lower housing; 403. upper housing; 404. fixed seat; 405. movable seat;

[0072] 5. spiral stirring assembly; 501. spiral blade; 502. support arm A; 503. support arm B;

[0073] 6. Planetary assembly; 601. Shaft; 602. Planetary gear;

[0074] 7. Two-way locking assembly; 701. fixing ring; 702. extension arm; 703. ratchet;

[0075] 8. Flushing assembly; 801. Flushing pipe; 802. Delivery pipe; 803. Nozzle; 804. Flat flow spray chamber;

[0076] 9. Lower tank body; 10. Upper tank body; 11. Support legs; 12. Climbing frame; 13. Feeding pipe; 14. Feeding pipe; 15. Liquid level indicator; 16. Tank mouth extension pipe; 17. Tank cover;

[0077] 18. Guide mechanism; 1801. Flexible guide blade; 1802. Support; 1803. Guide rod; 1804. Sliding seat; 1805. Spiral guide key; 1806. Spiral groove; 1807. Bearing rod A; 1808. Bearing rod B; 1809. Bearing rod C; 1810. Pull rod A; 1811. Articulated seat A; 1812. Pull rod B; 1813. Articulated seat B. DETAILED DESCRIPTION

[0078] Embodiment 1: Figure 1 , Figure 2 , Figure 3 As shown, the present invention relates to a protease extraction device with a self-cleaning function, comprising an extraction tank body, a motor 1 and a driving shaft 2, the extraction tank body comprising a lower tank body 9 and an upper tank body 10, the upper tank body 10 is fixedly arranged at the top of the lower tank body 9, and the bottom of the outer edge surface of the upper tank body 10 is provided with a plurality of supporting legs 11 in a ring array, the top of the outer edge surface of the upper tank body 10 is provided with a climbing frame 12 extending to one side of the lower tank body 9, the bottom end of the lower tank body 9 is connected with a feeding pipe 13, and the top of one side of the outer edge surface of the upper tank body 10 is connected with a feeding pipe 14, a liquid level meter 15 is connected between the top of one side of the upper tank body 10 and the bottom of one side of the lower tank body 9, one side of the top of the upper tank body 10 is connected with a tank mouth extension pipe 16, and one side of the tank mouth extension pipe 16 is hingedly installed with a tank cover 17 arranged on the top of the tank mouth extension pipe 16.

[0079] like Figure 2 , Figure 4 , Figure 5 , Figure 6 , Fig.12As shown, in the embodiment of the present invention, in order to avoid the problem that the attached impurities are difficult to scrape off after complete cooling, the motor 1 is fixedly installed at the center of the bottom end of the extraction tank body, and the motor shaft of the motor 1 extends to one end inside the extraction tank body and is fixedly connected to the drive shaft 2, and the top end of the drive shaft 2 is rotatably connected to the top of the extraction tank body, and an adjustable stirring mechanism 3 rotatably arranged in the extraction tank body is installed on the outer edge surface of the drive shaft 2. The adjustable stirring mechanism 3 includes two delayed planetary mechanisms 4, a plurality of spiral stirring components 5, two guide mechanisms 18 and a plurality of spiral stirring components 5 connected to the extraction tank body. The infusion pipeline of the plurality of spiral stirring components 5, the two delayed planetary mechanisms 4 are respectively installed at the bottom and the top of the outer edge surface of the driving shaft 2, and the plurality of spiral stirring components 5 are connected between the two delayed planetary mechanisms 4 in an annular array, and the two guide mechanisms 18 are respectively connected to the corresponding delayed planetary mechanisms 4, and the plurality of spiral stirring components 5 cooperate with the delayed planetary mechanisms 4 to form a retracting action for stirring the slurry and an unfolding action for scraping off the residual slurry. When the spiral stirring component 5 is in the retracted state, it is located at the center of the main body of the extraction tank, and when in the retracted state, it rotates The top of the rotating spiral stirring component 5 is in front, and the spiral stirring component 5 is in contact with the inner wall of the extraction tank body when it is in the expanded state, and the bottom of the rotating spiral stirring component 5 is in front when it is in the expanded state. The motor 1 provided with a driving shaft 2 cooperates with the adjustable stirring mechanism 3 to clean the attachments on the inner wall of the extraction tank body after the protease extraction is completed. During cleaning, the driving shaft 2 is driven by the motor 1 to rotate counterclockwise, so that the delayed planetary mechanism 4 provided with a plurality of spiral stirring components 5 through the driving shaft 2 rotates, and the expansion of the plurality of spiral stirring components 5 is achieved. Open, so that several spiral stirring components 5 in the expanded state are affected by the driving shaft 2 to scrape the impurities of the papaya extract attached to the inner wall of the extraction tank body. When the spiral blades 501 scrape the impurities attached to the inner wall of the extraction tank body, since the bottom end is in front when in the expanded state, the impurities will be scraped up and moved up along the inner wall, and the impurities will be pushed to the top of the extraction tank body to separate from the liquid surface. After the extraction liquid is discharged, the impurities will continue to be pushed to the top of the extraction tank and fall, thereby completing the cleaning of the impurities on the inner wall and avoiding the problem of difficult scraping of the attached impurities after complete cooling.

[0080] like Figure 2 , Figure 7 , Figure 8 , Fig.14 , Fig.15 , Fig.16 , Fig.17As shown, in the embodiment of the present invention, in order to promote the slurry backflow to form a circulating stirring of the papaya slurry, the two guide mechanisms 18 both have an unfolded guide state and a folded state. The two guide mechanisms 18 are located at the center position between the plurality of spiral stirring components 5, and the two guide mechanisms 18 in the unfolded guide state form an up and down reflux action of the slurry from the upper and lower sides. The guide mechanism 18 includes a plurality of flexible guide blades 1801 and a plurality of folding mechanisms. The plurality of flexible guide blades 1801 in the unfolded state form an annular guide convex disc. The folding mechanism includes a support 1802, a guide rod 1803, and a slide 1804. The top end of the guide rod 1803 is rotatably connected to one end of the support 1802, and the guide rod 180 The other end of the support 1802 is fixedly connected to the shaft 601, the other end of the support 1802 is fixedly connected to the lower shell 402, and the slide 1804 is slidably arranged on the guide rod 1803, and spiral guide keys 1805 are constructed on both sides of the slide 1804, and two spiral grooves 1806 for corresponding spiral guide keys 1805 to be slidably arranged are opened on the outer edge surface of the guide rod 1803, a bearing rod A1807 is hingedly installed on one side of the support 1802, a bearing rod B1808 is hingedly installed on one side of the slide 1804, one end of the bearing rod B1808 is hingedly connected to the bearing rod A1807 in the middle, and a pull rod A1810 is hingedly installed on the side of the bearing rod B1808 close to the bearing rod A1807, and the bearing rod A1807 and the flexible The flexible guide blade 1801 is hingedly connected to a hinge seat A1811, and a pull rod B1812 is fixedly installed at one end of the hinge seat A1811. A load-bearing rod C1809 is hingedly installed on one side of the load-bearing rod A1807 close to the hinge seat A1811, and the load-bearing rod C1809 and one end of the pull rod B1812 are hingedly connected to a hinge seat B1813. The hinge seat B1813 is fixed to one side of the bottom end of the flexible guide blade 1801, and the other side of the bottom end of the flexible guide blade 1801 is fixedly connected to the support 1802. The slurry is stirred by two guide mechanisms 18 in cooperation with a plurality of spiral stirring components 5 to promote the slurry reflux. When the plurality of spiral stirring components 5 are folded, they are driven by the rotation of the shaft 601. The guide rod 1803 rotates, thereby driving the slide 1804 to slide on the guide rod 1803, so as to push the load-bearing rod A1807 to lift it up through the load-bearing rod B1808, and further lift the hinge seat B1813 through the load-bearing rod C1809, the pull rod A1810, the hinge seat A1811, and the pull rod B1812, so as to realize the expansion of the flexible guide blade 1801. The annular guide convex plate formed when a number of flexible guide blades 1801 are expanded, and the papaya slurry in the extraction tank body is stirred by a number of spiral blades 501. When the arc-shaped stirring slope on the spiral blade 501 pushes the papaya slurry at the center of the extraction tank body to move, it rotates from the upper and lower sides and pushes the slurry to flow back, forming a circulating stirring of the papaya slurry.

[0081] like Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.14 As shown, in the embodiment of the present invention, in order to avoid the problem that impurities affect the quality of the extract, the delayed planetary mechanism 4 includes a sun gear 401, a lower shell 402 and an upper shell 403 covered on the sun gear 401 by upper and lower sides, and a plurality of planetary assemblies 6. The sun gear 401 is fixedly installed on the outer edge surface of the driving shaft 2, a plurality of fixed seats 404 are provided on the lower shell 402, and a plurality of movable seats 405 are provided on the upper shell 403. The movable seats 405 are movably provided with fixing bolts threadedly connected to the fixed seats 404. The lower shell 402 and the upper shell 403 are both rotatably arranged on the outer edge surface of the driving shaft 2. The planetary assembly 6 is rotatably installed in the lower shell 402 and the upper shell 403 in an annular array, and the planetary assembly 6 is meshed with the sun gear 401. The spiral stirring assembly 5 is fixedly arranged on the outer edge surface of the planetary assembly 6 extending out of the lower shell 402, and the planetary assembly 6 extends out of the lower shell 4 One end of 02 is fixedly connected to the guide mechanism 18, and the planetary assembly 6 includes a shaft rod 601, two planetary gears 602 and a two-way locking assembly 7. The bottom and top ends of the lower shell 402 and the upper shell 403 are both provided with a plurality of through holes in a circular array, and the shaft rod 601 is rotatably arranged in the two through holes, and the planetary gears 602 are symmetrically installed on both sides of the outer edge surface of the shaft rod 601. When cleaning, the driving shaft 2 is driven by the motor 1 to rotate counterclockwise, thereby driving the sun gear 401 to rotate through the driving shaft 2, and the sun gear 401 drives a plurality of shaft rods 601 with two planetary gears 602 to rotate, thereby driving the spiral stirring assembly 5 arranged at one end of the shaft rod 601 to rotate, completing the expansion or contraction of a plurality of spiral stirring assemblies 5, realizing the state switching of a plurality of spiral stirring assemblies 5, and realizing the self-cleaning of the extraction tank body through the switching of the direction, and avoiding the problem of impurities affecting the quality of the extract.

[0082] like Fig. 9 , Fig.10 , Fig.11As shown, in the embodiment of the present invention, in order to achieve the limit of the state of the spiral stirring component 5 after switching to improve the stability during stirring and scraping, the two-way locking component 7 includes a fixing ring 701, which is fixedly installed on the outer edge surface of the shaft rod 601 in the center, and extension arms 702 are constructed on both sides of the fixing ring 701, and a ratchet 703 is constructed at one end of the extension arm 702 away from the fixing ring 701, and the ratchet 703 is engaged with the sun gear 401. When the driving shaft 2 drives the sun gear 401 to change the rotation direction, the sun gear 401 drives the shaft rod 601 provided with two planetary gears 602 to rotate, thereby pulling the ratchet 703 at one end of the extension arm 702 out of the sun gear 401, and after completing the state switching of several spiral stirring components 5, the ratchet 703 at one end of the other extension arm 702 is abutted against the sun gear 401 and engaged, thereby achieving the limit of the state of the spiral stirring component 5 after switching, and improving the stability during stirring and scraping.

[0083] like Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig.10 , Fig.12 , Fig.13 , Fig.15 As shown, in the embodiment of the present invention, in order to form a circulating stirring of the papaya slurry, the spiral stirring assembly 5 includes a spiral blade 501, the top and bottom ends of the spiral blade 501 are respectively configured with a support arm A502 and a support arm B503, and the support arm A502 and the support arm B503 are respectively fixedly installed on the corresponding shaft 601, the spiral blade 501 has an arc-shaped stirring inclined surface and an arc-shaped scraping inclined surface, and a plurality of through holes are equidistantly opened on one side of the spiral blade 501 close to the arc-shaped stirring inclined surface, and a flushing assembly 8 is fixedly installed in the plurality of through holes;

[0084] When the spiral stirring assembly 5 is in the unfolded state, the spiral blade 501 abuts against the inner wall of the extraction tank body and rotates along the curvature of the inner wall, scrapes up the impurities through the arc-shaped scraping slope provided thereon, and pushes them to move upward along the inner wall, pushing the impurities to the top of the extraction tank body to separate from the liquid surface, and after the extraction liquid is cooled and discharged, continues to push the impurities to the top of the extraction tank and falls, thereby completing the cleaning of the impurities on the inner wall, avoiding the problem of impurities attached after cooling being difficult to scrape off.

[0085] Among them, when the spiral stirring assembly 5 is in a retracted state, a number of spiral blades 501 rotate around the driving shaft 2 and move away from the inner wall of the extraction tank. Driven by the driving shaft 2, the several spiral blades 501 stir the papaya extract in the extraction tank. Due to the arc-shaped stirring slope on the spiral blades 501, the papaya slurry at the center of the extraction tank body will be pushed downward during stirring, so that when it moves down to the bottom of the extraction tank body, it will flow back upward along the inner wall of the extraction tank body, forming a circulating stirring of the papaya slurry, and the extraction of the papaya slurry is completed in combination with heating, thereby improving the extraction rate of protease.

[0086] like Figure 4 , Figure 5 , Figure 6 , Fig.12 , Fig.13 As shown, in the embodiment of the present invention, in order to further improve the cleaning effect of impurities, the infusion pipeline includes a lower connector 301 fixedly arranged at the top of the outer edge surface of the driving shaft 2 and an upper connector 302 rotatably arranged at the top of the outer edge surface of the driving shaft 2, the lower connector 301 is rotatably connected and connected with the upper connector 302, a plurality of hoses 304 are connected to the outer edge surface of the lower connector 301, and a plurality of input pipes 303 are connected to the outer edge surface of the upper connector 302, the flushing assembly 8 includes a plurality of flushing pipes 801, the plurality of flushing pipes 801 are respectively fixedly installed in the corresponding through holes, and one end of the plurality of flushing pipes 801 is commonly fixedly installed with a delivery pipe 802 connected to the hose 304, and one end of the flushing pipe 801 away from the delivery pipe 802 is fixed A nozzle 803 is installed, and a flat flow spray cavity 804 is opened at one end of the nozzle 803. After the impurities attached to the inner wall of the extraction tank body are initially scraped off, the cleaning liquid is pumped into the upper connector 302 with a plurality of input pipes 303 through an external device, and then pumped into a plurality of delivery pipes 802 through the lower connector 301 provided on a plurality of hoses 304, and then diverted to a plurality of flushing pipes 801 through the delivery pipes 802. The cleaning liquid is discharged through the nozzle 803 with the flat flow spray cavity 804, forming a flat water flow to flush the inner wall of the extraction tank body, flushing the residual impurities, and cooperating with the spiral blade 501 abutting against the inner wall of the extraction tank body to complete the further cleaning of the residual papaya slurry, thereby further improving the cleaning effect of the impurities.

[0087] Embodiment 2: Figures 1 to 17 As shown, as another embodiment of the present invention, a method for using a protease extraction device with a self-cleaning function comprises the following steps:

[0088] S1, raw material pretreatment;

[0089] Select fresh, unripe papaya fruits, and gradually process them through a washing machine and a crushing machine to obtain papaya pulp for later use;

[0090] S2, gathering and stirring;

[0091] The papaya slurry is transported into the main body of the extraction tank, and then the motor 1 drives the driving shaft 2 to rotate clockwise, thereby driving the adjustable stirring mechanism 3 to rotate in the main body of the extraction tank through the driving shaft 2. In the initial stage of rotation, the sun gear 401 is driven to rotate through the driving shaft 2, thereby driving a plurality of shafts 601 provided with two planetary gears 602 to rotate, and then driving the spiral stirring assembly 5 to rotate with the two shafts 601 as the axis, and swing to one side of the driving shaft 2. After swinging to a specified position, the ratchet 703 provided at one end of the extension arm 702 abuts against the sun gear 401 and meshes with the sun gear 401, completing the position limiting of the shaft 601, so that the plurality of spiral stirring assemblies 5 enter a retracted state;

[0092] At the same time, the self-rotation of the shaft 601 drives the guide rod 1803 to rotate, thereby driving the slide 1804 to slide on the guide rod 1803, so as to push the bearing rod A1807 to be lifted by the bearing rod B1808, and further lift the hinge seat B1813 by the bearing rod C1809, the pull rod A1810, the hinge seat A1811, and the pull rod B1812, so as to realize the deployment of the flexible guide blades 1801; when the deployment of several flexible guide blades 1801 and several spiral blades 5 are completed, After the 01 is folded, the driving shaft 2 drives the plurality of flexible guide blades 1801 and the plurality of spiral blades 501 to rotate, so that the papaya slurry in the extraction tank body is stirred by the plurality of spiral blades 501, and the papaya slurry at the center of the extraction tank body is pushed by the arc-shaped stirring inclined surface on the spiral blade 501 to move, and the annular guide convex disc formed when the plurality of flexible guide blades 1801 are unfolded rotates from the upper and lower sides and pushes the slurry to flow back, thereby forming a circulating stirring of the papaya slurry;

[0093] S3, heating treatment;

[0094] During stirring, the papaya slurry is heated by the extraction tank body, and preliminary separation is performed according to the difference in boiling points of papain and impurities by controlling the heating temperature and the cooling temperature, so that the papain in the papaya slurry is separated from some low-boiling-point impurities during the heating process;

[0095] S4, inner wall cleaning;

[0096] After the extraction tank body stops heating the papaya slurry and gradually cools the papaya slurry, the motor 1 drives the drive shaft 2 to rotate counterclockwise, thereby driving the adjustable stirring mechanism 3 to rotate in the extraction tank body through the drive shaft 2. In the early stage of rotation, the sun gear 401 is driven to rotate through the drive shaft 2, thereby driving a plurality of shafts 601 with two planetary gears 602 to rotate, and then driving the spiral stirring assembly 5 to rotate with the two shafts 601 as the axis, deflecting to the side away from the drive shaft 2, and abutting against the inner wall of the extraction tank body. After deflecting to the specified position, one end of the other extension arm 702 The pawl 703 is arranged to abut against the sun gear 401, mesh with the sun gear 401, and complete the position limiting of the shaft 601, so that the plurality of spiral stirring components 5 enter the unfolded state, and at the same time, the two flow guide mechanisms 18 enter the folded state, and move in a circular manner around the driving shaft 2, so that the impurities attached to the inner wall are scraped by the plurality of spiral blades 501 abutting against the inner wall of the extraction tank body, and the impurities attached to the inner wall of the extraction tank body are scraped upward by the arc-shaped hanging material inclined surface on the spiral blades 501, so that the impurities are separated from the liquid surface when they move upward to the top of the extraction tank body, so as to cool the extract;

[0097] S5, separation and discharge processing;

[0098] After the papaya extract is cooled, the separated papaya extract is transported to a condenser, and the preliminary extract is collected through the condenser;

[0099] S6, impurity discharge treatment;

[0100] After the papaya extract is discharged, the spiral blade 501 continues to scrape the remaining impurities, so that the remaining impurities fall to the bottom of the extraction tank body when they reach the top of the extraction tank, thereby completing the cleaning of the impurities extracted from the papaya slurry;

[0101] S7, flushing treatment;

[0102] After the preliminary scraping treatment of the impurities attached to the inner wall of the extraction tank body is completed, the cleaning liquid is pumped into the upper connector 302 provided with a plurality of input pipes 303 through an external device, and then pumped into a plurality of delivery pipes 802 through the lower connector 301 provided with a plurality of hoses 304, and then shunted into a plurality of flushing pipes 801 through the delivery pipes 802, and the cleaning liquid is discharged through the nozzle 803 provided with a flat flow spray cavity 804, forming a flat water flow to flush the inner wall of the extraction tank body, and washing the residual impurities, and the spiral blade 501 abutting against the inner wall of the extraction tank body is cooperated to complete the further cleaning of the residual papaya slurry;

[0103] S8, ultrafiltration treatment;

[0104] filtering the preliminary extract through an ultrafiltration membrane to intercept macromolecular impurities and obtain a clarified solution containing papain;

[0105] S9, fine processing;

[0106] The clarified liquid is subjected to a refining treatment, and impurities are further removed through two-phase aqueous extraction, salting out, and precipitation to improve the purity of papain;

[0107] S10, dry packaging treatment;

[0108] The refined papain solution is dried to obtain papain powder, which is then packaged and stored.

[0109] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A protease extraction device with self-cleaning function, characterized in that: It comprises an extraction tank body, a motor (1) and a drive shaft (2); The motor (1) is fixedly mounted at the center of the bottom end of the extraction tank body, and the motor shaft of the motor (1) extends to one end inside the extraction tank body and is fixedly connected to the drive shaft (2), and the top end of the drive shaft (2) is rotatably connected to the top of the extraction tank body; An adjustable stirring mechanism (3) rotatably arranged in the extraction tank body is mounted on the outer edge surface of the driving shaft (2), and the adjustable stirring mechanism (3) comprises two delayed planetary mechanisms (4), a plurality of spiral stirring assemblies (5), two flow guiding mechanisms (18), and an infusion pipeline connected to the plurality of spiral stirring assemblies (5). The two delayed planetary mechanisms (4) are respectively mounted on the bottom and top of the outer edge surface of the driving shaft (2), and the plurality of spiral stirring assemblies (5) are connected between the two delayed planetary mechanisms (4) in a ring array. The two flow guiding mechanisms (18) are respectively connected to the corresponding delayed planetary mechanisms (4), and the two flow guiding mechanisms (18) both have an unfolded flow guiding state and a folded state. The two flow guiding mechanisms (18) are located at a central position between the plurality of spiral stirring assemblies (5), and the two flow guiding mechanisms (18) in the unfolded flow guiding state form an upward and downward reflux action for the slurry from upper and lower sides. The plurality of spiral stirring components (5) cooperate with the delayed planetary mechanism (4) to form a retracting action for stirring the slurry and an unfolding action for scraping off residual slurry. When the spiral stirring components (5) are in a retracted state, they are located at the center of the extraction tank body, and when in the retracted state, the top end of the rotating spiral stirring components (5) is in front. When the spiral stirring components (5) are in an unfolded state, they abut against the inner wall of the extraction tank body, and when in the unfolded state, the bottom end of the rotating spiral stirring components (5) is in front. The spiral stirring assembly (5) comprises a spiral blade (501), wherein the spiral blade (501) has an arc-shaped stirring inclined surface and an arc-shaped scraping inclined surface; and a plurality of through holes are equidistantly formed on one side of the spiral blade (501) close to the arc-shaped stirring inclined surface, wherein a flushing assembly (8) is fixedly mounted in the plurality of through holes; The flushing assembly (8) comprises a plurality of flushing pipes (801), wherein the plurality of flushing pipes (801) are respectively fixedly installed in corresponding through holes, a nozzle (803) is fixedly installed at one end of the flushing pipe (801), and a flat flow spray cavity (804) is provided at one end of the nozzle (803); When the spiral stirring assembly (5) is in the unfolded state, the spiral blade (501) abuts against the inner wall of the extraction tank body and rotates along the curvature of the inner wall, scraping up impurities through the arc-shaped scraping inclined surface provided thereon, and pushing them upward along the inner wall, pushing the impurities to the top of the extraction tank body to separate from the liquid surface, and after the extraction liquid is cooled and discharged, the impurities are further pushed to the top of the extraction tank and fall down, and after the preliminary scraping treatment of the impurities attached to the inner wall of the extraction tank body is completed, a flat water flow is formed through the flat flow spray chamber (804) to flush the inner wall of the extraction tank body, and cooperates with the spiral blade (501) abutting against the inner wall of the extraction tank body to further clean the residual papaya slurry; The flow guiding mechanism (18) comprises: A plurality of flexible guide blades (1801), wherein the plurality of flexible guide blades (1801) in an expanded state form an annular guide convex disc; A plurality of folding mechanisms are provided, wherein the folding mechanisms include a support (1802), a guide rod (1803), and a slide (1804), wherein the top end of the guide rod (1803) is rotatably connected to one end of the support (1802), and the slide (1804) is slidably arranged on the guide rod (1803), and spiral guide keys (1805) are constructed on both sides of the slide (1804), and two spiral grooves (1806) are provided on the outer edge surface of the guide rod (1803) for slidingly arranging the spiral guide keys (1805) corresponding to the spiral guide keys (1805).

2. A protease extraction device with self-cleaning function according to claim 1, characterized in that: The delayed planetary mechanism (4) comprises: A sun gear (401), the sun gear (401) being fixedly mounted on the outer edge surface of the drive shaft (2); A lower shell (402) and an upper shell (403) are arranged on the sun gear (401) at upper and lower sides, the lower shell (402) is provided with a plurality of fixed seats (404), and the upper shell (403) is provided with a plurality of movable seats (405), the movable seats (405) are movably provided with fixing bolts threadedly connected to the fixed seats (404), and the lower shell (402) and the upper shell (403) are both rotatably arranged on the outer edge surface of the drive shaft (2); A plurality of planetary assemblies (6), the planetary assemblies (6) being rotatably mounted in the lower shell (402) and the upper shell (403) in an annular array, and the planetary assemblies (6) being meshed with the sun gear (401), the spiral stirring assembly (5) being fixedly mounted on the outer edge surface of one end of the planetary assembly (6) extending out of the lower shell (402), and the one end of the planetary assembly (6) extending out of the lower shell (402) being fixedly connected to the flow guide mechanism (18).

3. A protease extraction device with self-cleaning function according to claim 2, characterized in that: The planetary assembly (6) comprises a shaft (601), two planetary wheels (602) and a bidirectional locking assembly (7); the bottom and top ends of the lower shell (402) and the upper shell (403) are provided with a plurality of through holes in a circular array, and the shaft (601) is rotatably arranged in the two through holes, and the planetary wheels (602) are symmetrically rotatably mounted on both sides of the outer edge surface of the shaft (601).

4. A protease extraction device with self-cleaning function according to claim 3, characterized in that: The bidirectional locking assembly (7) comprises a fixing ring (701), the fixing ring (701) being centrally fixedly mounted on the outer edge surface of the shaft (601), and extension arms (702) being constructed on both sides of the fixing ring (701), and a pawl (703) being constructed at one end of the extension arm (702) away from the fixing ring (701), and the pawl (703) being meshed with the sun gear (401).

5. A protease extraction device with self-cleaning function according to claim 4, characterized in that: The other end of the guide rod (1803) is fixedly connected to the shaft rod (601), and the other end of the support (1802) is fixedly connected to the lower shell (402); A bearing rod A (1807) is hingedly installed on one side of the support (1802), a bearing rod B (1808) is hingedly installed on one side of the slide seat (1804), one end of the bearing rod B (1808) is hingedly connected to the bearing rod A (1807) in the middle, and a pull rod A (1810) is hingedly installed on one side of the bearing rod B (1808) close to the bearing rod A (1807), the bearing rod A (1807) and the flexible guide blade (1801) are hingedly connected to a hinge seat A (1811), and the hinge A pull rod B (1812) is fixedly installed on one end of the connecting seat A (1811), and a load-bearing rod C (1809) is hingedly installed on one side of the load-bearing rod A (1807) close to the hinged seat A (1811), and one end of the load-bearing rod C (1809) and the pull rod B (1812) are hingedly connected to a hinged seat B (1813), and the hinged seat B (1813) is fixed to one side of the bottom end of the flexible guide blade (1801), and the other side of the bottom end of the flexible guide blade (1801) is fixedly connected to the support (1802).

6. The protease extraction device with self-cleaning function according to claim 5, characterized in that: The top end and the bottom end of the spiral blade (501) are respectively constructed with a support arm A (502) and a support arm B (503), and the support arm A (502) and the support arm B (503) are respectively fixedly mounted on the corresponding shaft rod (601).

7. The protease extraction device with self-cleaning function according to claim 6, characterized in that: The infusion pipeline comprises a lower connector (301) fixedly arranged at the top end of the outer edge surface of the drive shaft (2) and an upper connector (302) rotatably arranged at the top end of the outer edge surface of the drive shaft (2); the lower connector (301) and the upper connector (302) are rotatably connected and connected; a plurality of hoses (304) are connected to the outer edge surface of the lower connector (301), and a plurality of input tubes (303) are connected to the outer edge surface of the upper connector (302).

8. The protease extraction device with self-cleaning function according to claim 7, characterized in that: A delivery pipe (802) connected to a hose (304) is fixedly mounted on one end of a plurality of flushing pipes (801), and a nozzle (803) is fixedly mounted on one end of the flushing pipe (801) away from the delivery pipe (802).

9. The protease extraction device with self-cleaning function according to claim 8, characterized in that: The extraction tank body comprises a lower tank body (9) and an upper tank body (10), wherein the upper tank body (10) is fixedly arranged at the top of the lower tank body (9), and a plurality of supporting legs (11) are arranged in a circular array at the bottom of the outer edge surface of the upper tank body (10), and a climbing frame (12) extending to one side of the lower tank body (9) is arranged at the top of the outer edge surface of the upper tank body (10), and a feeding pipe (14) is connected to the top of one side of the outer edge surface of the upper tank body (10), and a liquid level meter (15) is connected between the top of one side of the upper tank body (10) and the bottom of one side of the lower tank body (9), and a tank mouth extension pipe (16) is connected to one side of the top of the upper tank body (10), and a tank cover (17) arranged on the top of the tank mouth extension pipe (16) is hingedly installed on one side of the tank mouth extension pipe (16).

10. A method for using a protease extraction device with a self-cleaning function, which is applicable to the protease extraction device with a self-cleaning function according to claim 9, characterized in that: The steps include: S1, raw material pretreatment; Select fresh, unripe papaya fruits, and gradually process them through a washing machine and a crushing machine to obtain papaya pulp for later use; S2, gathering and stirring; The papaya slurry is transported into the main body of the extraction tank, and then the motor (1) drives the driving shaft (2) to rotate clockwise, thereby driving the adjustable stirring mechanism (3) to rotate in the main body of the extraction tank through the driving shaft (2). In the initial stage of rotation, the driving shaft (2) drives the sun wheel (401) to rotate, thereby driving a plurality of shafts (601) provided with two planetary wheels (602) to rotate, thereby driving the spiral stirring components (5) to rotate with the two shafts (601) as the axis, and swinging toward one side of the driving shaft (2). After swinging to a specified position, the ratchet (703) provided at one end of the extension arm (702) abuts against the sun wheel (401) and meshes with the sun wheel (401), thereby completing the position limiting of the shaft (601), and causing the plurality of spiral stirring components (5) to enter a retracted state; At the same time, the self-rotation of the shaft (601) drives the guide rod (1803) to rotate, thereby driving the slide seat (1804) to slide on the guide rod (1803), so as to push the load-bearing rod A (1807) to lift it up through the load-bearing rod B (1808), and further lift the hinge seat B (1813) through the load-bearing rod C (1809), the pull rod A (1810), the hinge seat A (1811), and the pull rod B (1812), so as to realize the deployment of the flexible guide blades (1801); when the deployment of a plurality of flexible guide blades (1801) and the deployment of a plurality of flexible guide blades (1801) are completed, After the spiral blades (501) are retracted, the plurality of flexible guide blades (1801) and the plurality of spiral blades (501) are driven to rotate through the driving shaft (2), so that the papaya slurry in the extraction tank body is stirred by the plurality of spiral blades (501), and the papaya slurry at the center of the extraction tank body is pushed by the arc-shaped stirring inclined surfaces on the spiral blades (501) to move, and the annular guide convex disc formed when the plurality of flexible guide blades (1801) are unfolded rotates from the upper and lower sides and pushes the slurry to flow back, thereby forming a cyclic stirring of the papaya slurry; S3, heating treatment; During stirring, the papaya slurry is heated by the extraction tank body, and preliminary separation is performed according to the difference in boiling points of papain and impurities by controlling the heating temperature and the cooling temperature, so that the papain in the papaya slurry is separated from some low-boiling-point impurities during the heating process; S4, inner wall cleaning; After the extraction tank body stops heating the papaya slurry and the papaya slurry is gradually cooled, the motor (1) drives the drive shaft (2) to rotate counterclockwise, thereby driving the adjustable stirring mechanism (3) to rotate in the extraction tank body through the drive shaft (2). In the initial stage of rotation, the drive shaft (2) drives the sun gear (401) to rotate, thereby driving a plurality of shafts (601) provided with two planetary gears (602) to rotate, thereby driving the spiral stirring assembly (5) to rotate with the two shafts (601) as the axis, deflecting to the side away from the drive shaft (2) and abutting against the inner wall of the extraction tank body. After deflecting to a specified position, the other extension arm (702) ) a ratchet (703) disposed at one end thereof abuts against the sun gear (401) and meshes with the sun gear (401), thereby limiting the position of the shaft (601), so that the plurality of spiral stirring assemblies (5) enter an unfolded state, and at the same time the two flow guide mechanisms (18) enter a folded state and move in a circular manner around the drive shaft (2), thereby scraping impurities attached to the inner wall through the plurality of spiral blades (501) abutting against the inner wall of the extraction tank body, and scraping the impurities attached to the inner wall of the extraction tank body through the arc-shaped hanging material inclined surface on the spiral blades (501), so that the impurities attached to the inner wall of the extraction tank body are moved upward, so that they are separated from the liquid surface when they move upward to the top of the extraction tank body, thereby cooling the extract; S5, separation and discharge processing; After the papaya extract is cooled, the separated papaya extract is transported to a condenser, and the preliminary extract is collected through the condenser; S6, impurity discharge treatment; After the papaya extract is discharged, the spiral blade (501) continues to scrape the remaining impurities, so that when the impurities reach the top of the extraction tank, they fall to the bottom of the extraction tank body, thereby completing the cleaning of the impurities extracted from the papaya slurry; S7, flushing treatment; After the preliminary scraping treatment of the impurities attached to the inner wall of the extraction tank body is completed, the cleaning liquid is pumped into an upper connector (302) provided with a plurality of input pipes (303) through an external device, and then pumped into a plurality of delivery pipes (802) through a lower connector (301) provided with a plurality of hoses (304), and then diverted to a plurality of flushing pipes (801) through the delivery pipes (802), and the cleaning liquid is discharged through a nozzle (803) provided with a flat flow spray cavity (804), forming a flat water flow to flush the inner wall of the extraction tank body, flushing the residual impurities, and cooperating with the spiral blade (501) abutting against the inner wall of the extraction tank body to further clean the residual papaya pulp; S8, ultrafiltration treatment; filtering the preliminary extract through an ultrafiltration membrane to intercept macromolecular impurities and obtain a clarified solution containing papain; S9, fine processing; The clarified liquid is subjected to a refining treatment, and impurities are further removed through two-phase aqueous extraction, salting out, and precipitation to improve the purity of papain; S10, dry packaging treatment; The refined papain solution is dried to obtain papain powder, which is then packaged and stored.

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