A device for extracting lentinan by reverse flow ultrasonic

Abstract

This invention relates to the field of lentinan extraction technology, specifically a lentinan countercurrent ultrasonic extraction device. The device includes a discharge pipe connected to the side of the desaccharification unit, a water inlet pipe fixedly connected to the top of the desaccharification unit, a vibration component fixedly connected to the center of the top of the desaccharification unit, and a feeding component fixedly connected to the bottom of the side of the desaccharification unit. A liquid outlet pipe, configured as an arc-shaped loop structure, centrally discharges the solution, with its top connected to the bottom of the desaccharification unit. In this lentinan countercurrent ultrasonic extraction device, the raw material and a small amount of water are pre-mixed and fed into the desaccharification unit. As the material moves upward with the spiral pusher, external water is introduced from the bottom of the stirring tube in the opposite direction, contacting the rising material countercurrently for cleaning and dissolving the polysaccharides. During the cleaning and desaccharification process, ultrasonic vibration acts simultaneously inside and outside the tube, resulting in thorough polysaccharide extraction and increased penetration depth. The extracted polysaccharide-containing solution is discharged through the bottom sidewall outlet.

Description

Technical Field

[0001] This invention relates to the field of lentinan extraction technology, specifically to a lentinan countercurrent ultrasonic extraction device. Background Technology

[0002] Lentinan, a polysaccharide found in shiitake mushroom fruiting bodies, possesses various bioactivities, including immunomodulatory, antitumor, and antiviral effects, and has broad application prospects in medicine, health foods, and cosmetics. Currently, extraction methods for shiitake polysaccharides mainly include hot water extraction, acid extraction, alkali extraction, enzyme extraction, and ultrasound-assisted extraction. Hot water extraction involves multiple extraction cycles, resulting in low extraction rates and high material consumption. Acid extraction reduces extraction rates and, to some extent, damages bioactivity due to the acidic conditions that break the glycosidic bonds of the polysaccharides. Alkali extraction easily destroys the bioactivity of shiitake polysaccharides. Enzyme extraction, while gentler, has a long extraction cycle and high costs. While ultrasound-assisted extraction can effectively shorten extraction time and increase extraction rates, existing ultrasound extraction equipment mostly operates statically or intermittently, making continuous production difficult.

[0003] CN102807629A describes a method for extracting rice bran polysaccharides using a continuous countercurrent ultrasonic device. The resulting rice bran residue is then used to produce rice bran nutrients and rice bran dietary fiber, achieving full utilization of rice bran. The production process generates no waste residue and utilizes the residue from the production process, thus expanding the comprehensive utilization pathways of rice bran.

[0004] To address the issue that existing technologies often result in solid metal spiral shafts and blades violently reflecting and absorbing ultrasonic waves, creating an acoustic shadow zone on the back of the blades, the material is essentially passively "drifting" within this shadow zone for most of the time as it is propelled by the blades, resulting in a very short effective ultrasonic exposure time. Summary of the Invention

[0005] The technical solution provided by this invention is as follows: A countercurrent ultrasonic extraction device for lentinan, comprising:

[0006] The equipment frame is a hollow frame structure with a sugar removal device fixedly connected to its inner side. A discharge pipe is connected to the side of the sugar removal device, and a water inlet pipe is fixedly connected to its top. A vibration component is fixedly connected to the center of the top of the sugar removal device, and a feeding component is fixedly connected to the bottom of its side. A liquid outlet pipe, which centrally discharges the solution, is an arc-shaped loop structure, with its top connected to the bottom of the sugar removal device. The sugar removal device includes a vibrating ring that drives the raw material to vibrate, a stirring tube fixedly connected to its side, and a pushing component fixedly connected to the inner side of the stirring tube. It also includes a heating ring for annular heating of the liquid inside the stirring tube, located within the vibrating ring. On the side, the raw materials and trace amounts of water are pre-mixed and stirred by the feeding component and then conveyed into the desugaring device. After the push component is started, the drive shaft rotates and drives the raw materials to spiral upward along the inner wall of the stirring tube. During the upward process, the water inlet pipe introduces external water into the bottom of the stirring tube through the discharge pipe. The external water and the rising raw materials form a countercurrent contact to complete the cleaning and dissolve the polysaccharides. During the cleaning and desugaring process, the vibration component is activated. The vibration component, as an ultrasonic vibrator extending into the stirring tube, works together with the vibrating ring sleeved on the outer wall of the stirring tube to perform ultrasonic vibration. The synchronous vibration inside and outside accelerates the desugaring of polysaccharides and deepens the ultrasonic penetration depth, thereby improving the vibration effect. The equipment frame provides fixed support for the side of the stirring tube, and the liquid outlet pipe connected to the bottom side wall of the stirring tube guides and discharges the polysaccharide-containing solution.

[0007] Preferably, the flow guide shroud has a fluid dispersion and guiding structure, a motor is fixedly connected to the top of the inner wall of the flow guide shroud, and a rotating base is fixedly connected to the motor drive shaft; the spiral blades are wider at the top and narrower at the bottom, the spiral blades are configured as a spiral rising structure, a rotating hole is opened at the top of the spiral blades, the bottom of the spiral blades is fixedly connected to the bottom of the rotating base, and the vibration component extends into the interior of the rotating hole and is rotatably connected to the inner wall side of the rotating hole.

[0008] Preferably, the rotating base includes a rotating base, an arc-shaped guide groove is provided on the top of the rotating base, a guide hole is provided at the center of the top of the rotating base, and a filter hole is provided on the top of the rotating base.

[0009] Preferably, the bottom of the rotating base is fixedly connected to the drive shaft of the motor, the bottom of the spiral blade is fixedly connected to the inner wall side of the guide hole, the arc-shaped guide groove is set as an arc-shaped guide structure, the rotating base is set on one side of the feeding component, after the motor starts, the rotating base is driven to rotate through the drive shaft and the rotating base rotates synchronously. When the arc-shaped guide groove rotates, the premixed liquid inside the feeding component is introduced into the guide hole. The premixed liquid is concentrated through the guide hole and pushed upward by the spiral blade. The side of the rotating base fits with the liquid inlet of the feeding component to form a rotary seal. The side of the spiral blade is provided with a rotating hole for the vibration component to pass through and extend into the stirring tube. The filter holes arranged at the root of the spiral blade or on the rotating base allow the polysaccharide solution to permeate downward, forming a countercurrent desugaring during the rising process of the raw material. The guide cover on the top of the spiral blade leads the polysaccharide-rich solution to the liquid outlet pipe.

[0010] Preferably, the discharge pipe includes a guide pipe, a separation pipe is fixedly connected to the inner wall side of the guide pipe, a squeezing ring is fixedly connected to the inner wall side of the separation pipe, a connecting pipe is fixedly connected to the separation pipe at one side of the squeezing ring, and a water spray pipe is fixedly connected to the top of the separation pipe.

[0011] Preferably, a connecting ring is fixedly connected to the side of the outer guide pipe, the side of the spray pipe is connected to the side of the inlet pipe, and the connecting ring is located inside the stirring pipe.

[0012] Preferably, the connecting ring includes a fixed ring with scraping holes on its side. The side of the fixed ring is fixedly connected to the inner wall of the stirring tube. The side of the spiral blade contacts the side of the fixed ring. The water inlet pipe introduces external water into the spray pipe. When the spiral blade rotates and pushes the raw material to the top of the stirring tube, the raw material is squeezed into the interior of multiple sets of separation tubes distributed along the circumference. The separation tubes are equipped with extrusion rings. The raw material is further squeezed out of residual polysaccharide solution through the contraction section of the extrusion ring. The spray pipe extends to the outlet end of the separation tube to spray and rinse the extruded raw material. The rinsing liquid and the extruded liquid flow downward along the guide pipe sleeved outside the stirring tube and flow into the connecting ring. The liquid passes through the scraping holes on the side wall of the fixed ring and enters the interior of the fixed ring and is finally introduced into the feeding assembly to complete the clean water reuse. Multiple sets of separation tubes realize multi-path slag discharge. The scraping holes are strip-shaped holes. When the spiral blade rotates, the outer edge scrapes through the strip-shaped holes to remove the raw material attached to the inner wall of the fixed ring to prevent blockage.

[0013] Preferably, the vibration assembly includes a vibration base, a vibrating rod is fixedly connected through and to the top of the vibration base, a connecting plate is fixedly connected to the side of the vibrating rod, a rotating sleeve is sleeved and fixedly connected to the side of the connecting plate, the side of the rotating sleeve is rotatably connected to the side of the spiral blade through a rotating hole, and the bottom of the vibration base is fixedly connected to the top of the sugar removal device.

[0014] Preferably, the feeding assembly includes a mixing pipe, with a water supply pipe connected to one side of the top of the mixing pipe, and a feeding pipe connected to the top of the mixing pipe at the same position as the water supply pipe. The fixed end of the spiral pusher is fixedly connected to the side of the mixing pipe, and the side of the mixing pipe is connected to the side of the stirring pipe. The mixing pipe is positioned on one side of the rotating base, and the vibrating base fixes and supports the vibrating rod. The vibrating rod generates vibration and transmits it to the rotating sleeve through the connecting plate. The rotating sleeve transmits the vibration to the raw material inside the stirring pipe. The central hub of the spiral blade is fitted outside the rotating sleeve and is driven by the motor to rotate and scrape around the rotating sleeve to prevent the raw material from sticking together. After the spiral pusher is started, the rotating part of the spiral pusher mixes the trace amount of water introduced by the water supply pipe with the raw material powder introduced by the feeding pipe in the mixing pipe and pushes it forward. The mixture enters the stirring pipe through the feed inlet to participate in desugaring.

[0015] The beneficial effects of the technical solution provided by this invention include:

[0016] 1. The raw materials and a small amount of water are pre-mixed and fed into the desugaring device. As the spiral pushes upward, the external water source is introduced from the bottom of the stirring tube in the opposite direction, and comes into countercurrent contact with the rising material to clean it and dissolve and remove the polysaccharides. During the cleaning and desugaring process, ultrasonic vibration acts on both the inside and outside of the tube, so that the polysaccharides are fully removed and the penetration depth is increased. The desugared polysaccharide-containing solution is discharged through the bottom side wall outlet.

[0017] 2. After the premixed liquid enters, it is concentrated and pushed upward by the spiral blades. The polysaccharide solution in the material permeates downward through the filter holes, forming a countercurrent desugaring process. The top guide hood leads the polysaccharide-rich solution to the outlet pipe.

[0018] 3. After the raw material is pushed to the top, it is squeezed into multiple sets of separation tubes distributed along the circumference. The residual polysaccharide solution is squeezed out through the shrinking section of the extrusion ring and then rinsed by spray water. The squeezed liquid and the rinsing liquid flow downward along the guide pipe, merge and pass through the channel to be introduced into the feeding assembly to complete the clean water reuse. Multiple sets of separation tubes realize multiple slag discharge. The outer edge of the spiral blade scrapes through the strip hole to remove the attached material and avoid blockage.

[0019] 4. The raw materials are subjected to continuous vibration inside the mixing tube. The rotating central hub scrapes to prevent the materials from sticking together. The spiral pusher mixes a small amount of water with the raw material powder to form a wet material, which is then pushed into the mixing tube to participate in sugar removal. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the countercurrent ultrasonic extraction device for lentinan of the present invention;

[0021] Figure 2 This is a schematic diagram of the sugar removal device of the present invention;

[0022] Figure 3 This is a schematic diagram of the component structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the rotating base structure of the present invention;

[0024] Figure 5 This is a schematic diagram of the discharge pipe structure of the present invention;

[0025] Figure 6 This is a schematic diagram of the connecting ring structure of the present invention;

[0026] Figure 7 This is a schematic diagram of the vibration component structure of the present invention;

[0027] Figure 8 This is a schematic diagram of the feeding assembly structure of the present invention.

[0028] In the diagram: 1. Equipment frame; 2. Sugar removal device; 3. Discharge pipe; 4. Water inlet pipe; 5. Vibration assembly; 6. Feeding assembly; 7. Liquid outlet pipe; 201. Stirring pipe; 202. Vibration ring; 203. Heating ring; 204. Pushing assembly; 2041. Flow guide shroud; 2042. Motor; 2043. Rotating base; 2044. Spiral blade; 2045. Rotation hole; 20431. Rotating base; 20432. Arc-shaped guide groove; 20 433, Guide hole; 20434, Filter hole; 301, Outer guide pipe; 302, Separation pipe; 303, Extrusion ring; 304, Connecting pipe; 305, Water spray pipe; 306, Connecting ring; 3061, Fixing ring; 3062, Scraping hole; 501, Vibrating base; 502, Vibrating rod; 503, Connecting plate; 504, Rotating sleeve; 601, Mixing pipe; 602, Water delivery pipe; 603, Feeding pipe; 604, Screw pusher. Detailed Implementation

[0029] Example 1, please refer to Figures 1-2 This invention provides a technical solution: a countercurrent ultrasonic extraction device for shiitake mushroom polysaccharides. The raw material and a trace amount of water are pre-mixed and stirred by the feeding component 6 and then transported into the interior of the desaccharification device 2. After the driving component 204 is started, the drive shaft rotates and drives the raw material to spirally rise along the inner wall of the stirring tube 201. During the rising process, the water inlet pipe 4 introduces external water source into the bottom of the stirring tube 201 through the discharge pipe 3. The heating ring 203 heats the side of the stirring tube 201. The external water source and the rising raw material form a countercurrent contact to complete the cleaning and dissolve the polysaccharides. During the cleaning and desaccharification, the vibration component 5 is activated. The vibration component 5, as an ultrasonic vibrator extending into the stirring tube 201, works together with the vibration ring 202 sleeved on the outer wall of the stirring tube 201 to perform ultrasonic vibration. The synchronous vibration inside and outside accelerates the desaccharide extraction and deepens the ultrasonic penetration depth, thereby improving the vibration effect. The equipment frame 1 provides fixed support for the side of the stirring tube 201. The liquid outlet pipe 7 connected to the bottom side wall of the stirring tube 201 guides and outputs the polysaccharide-containing solution.

[0030] Example 2, please refer to Figures 1-4 Based on the first embodiment, after the motor 2042 starts, it drives the rotating base 2043 to rotate through the drive shaft. The rotating base 20431 located at the center of the rotating base 2043 rotates synchronously. When the arc-shaped guide groove 20432 opened on the rotating base 20431 rotates, it introduces the premixed liquid inside the feeding component 6 into the guide hole 20433. After the premixed liquid is concentrated through the guide hole 20433, it is pushed upward by the spiral blade 2044. The side of the rotating base 20431 fits with the liquid inlet of the feeding component 6 to form a rotation seal. The side of the spiral blade 2044 is provided with a rotating hole 2045 for the vibration component 5 to pass through and extend into the stirring tube 201. The filter hole 20434 arranged at the root of the spiral blade 2044 or on the rotating base 20431 allows the polysaccharide solution to permeate downward, forming a countercurrent desugaring during the rising process of the raw material. The guide cover 2041 covering the top of the spiral blade 2044 leads the polysaccharide-rich solution to the liquid outlet pipe 7.

[0031] Example 3, please refer to Figures 1-6 Based on the second embodiment, the water inlet pipe 4 introduces external water into the spray pipe 305. When the rotating spiral blade 2044 pushes the raw material to the top of the stirring pipe 201, the raw material is squeezed into the interior of multiple sets of separation pipes 302 distributed along the circumference. The separation pipe 302 is equipped with a compression ring 303. The raw material is further squeezed out of residual polysaccharide solution through the contraction section of the compression ring 303. The connecting pipe 304 facilitates the output of the raw material. The spray pipe 305 extends to the outlet end of the separation pipe 302 to spray and rinse the squeezed raw material. The rinsing liquid and the extruded liquid flow downwards along the guide pipe 301 that is sleeved outside the stirring pipe 201 and merge into the connecting ring 306. The liquid passes through the scraping hole 3062 on the side wall of the fixed ring 3061 in the connecting ring 306 and enters the interior of the fixed ring 3061. Finally, it is introduced into the feeding assembly 6 to complete the recycling of clean water. Multiple sets of separation pipes 302 realize multi-channel slag discharge. The scraping hole 3062 is a strip-shaped hole. When the spiral blade 2044 rotates, the outer edge scrapes through the strip-shaped hole to scrape off the raw material attached to the inner wall of the fixed ring 3061 to prevent blockage.

[0032] Example 4, please refer to Figures 1-8 Based on the third embodiment, the vibrating base 501 fixes and supports the vibrating rod 502. The vibrating rod 502 generates vibration and transmits it to the rotating sleeve 504 through the radial connecting plate 503. The rotating sleeve 504 transmits the vibration to the raw material inside the stirring tube 201. The central hub of the spiral blade 2044 is sleeved outside the rotating sleeve 504 and is driven by the motor 2042 to rotate and scrape around the rotating sleeve 504, so as to avoid the raw material from sticking to the side of the rotating sleeve 504. After the spiral pusher 604 is started, the rotating part of the spiral pusher 604 mixes the trace amount of water introduced by the water supply pipe 602 with the raw material powder introduced by the feeding pipe 603 in the mixing tube 601 and pushes it forward. The mixture enters the stirring tube 201 through the feed port to participate in desugaring.

[0033] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. The scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A countercurrent ultrasonic extraction device for lentinan, characterized in that, include: A fixed support equipment frame, wherein the equipment frame is configured as a hollow frame structure, a sugar removal device is fixedly connected to the inner wall side of the equipment frame, a discharge pipe is connected to the side of the sugar removal device, a water inlet pipe is fixedly connected to the top of the sugar removal device, a vibration component is fixedly connected to the center of the top of the sugar removal device, and a feeding component is fixedly connected to the bottom side of the sugar removal device. The liquid outlet pipe centrally discharges the solution. The liquid outlet pipe is configured with an arc-shaped loop structure, and the top of the liquid outlet pipe is connected to the bottom of the sugar removal device. The sugar removal device includes: A vibrating ring that drives the raw materials to vibrate, wherein a stirring tube is fixedly connected to the side of the vibrating ring, and a pushing component is fixedly connected to the inner wall side of the stirring tube. It also includes a heating ring for annular heating of the liquid inside the stirring tube, the heating ring being disposed on the side of the vibrating ring.

2. The countercurrent ultrasonic extraction device for lentinan according to claim 1, characterized in that, The actuating component includes: A flow guide shroud with a fluid dispersion and guiding structure, wherein a motor is fixedly connected to the top of the inner wall of the flow guide shroud, and the drive shaft of the motor is fixedly connected to a rotating base; The spiral blade is wider at the top and narrower at the bottom. The spiral blade is configured as a spiral rising structure. The top of the spiral blade has a rotating hole. The bottom of the spiral blade is fixedly connected to the bottom of the rotating base. The vibration component extends into the interior of the rotating hole and is rotatably connected to the inner wall side of the rotating hole.

3. The countercurrent ultrasonic extraction device for lentinan according to claim 2, characterized in that: The rotating base includes a rotating base, an arc-shaped guide groove is provided on the top of the rotating base, a guide hole is provided at the center of the top of the rotating base, and a filter hole is provided on the top of the rotating base.

4. The countercurrent ultrasonic extraction device for lentinan according to claim 3, characterized in that: The bottom of the rotating base is fixedly connected to the drive shaft of the motor, the bottom of the spiral blade is fixedly connected to the inner wall side of the guide hole, the arc-shaped guide groove is configured as an arc-shaped guide structure, and the rotating base is located on one side of the feeding assembly.

5. The countercurrent ultrasonic extraction device for lentinan according to claim 2, characterized in that: The discharge pipe includes a guide pipe, a separation pipe is fixedly connected to the inner wall side of the guide pipe, a squeezing ring is fixedly connected to the inner wall side of the separation pipe, a connecting pipe is fixedly connected to the separation pipe at one side of the squeezing ring, and a water spray pipe is fixedly connected to the top of the separation pipe.

6. The countercurrent ultrasonic extraction device for lentinan according to claim 5, characterized in that: A connecting ring is fixedly connected to the side of the outer guide pipe, the side of the spray pipe is connected to the side of the inlet pipe, and the connecting ring is located inside the stirring pipe.

7. The countercurrent ultrasonic extraction device for lentinan according to claim 6, characterized in that: The connecting ring includes a fixing ring, and a scraping hole is provided on the side of the fixing ring. The side of the fixing ring is fixedly connected to the inner wall side of the stirring tube, and the side of the spiral blade is in contact with the side of the fixing ring.

8. The countercurrent ultrasonic extraction device for lentinan according to claim 2, characterized in that: The vibration assembly includes a vibration base, a vibrating rod is fixedly connected through and to the top of the vibration base, a connecting plate is fixedly connected to the side of the vibrating rod, a rotating sleeve is sleeved and fixedly connected to the side of the connecting plate, the side of the rotating sleeve is rotatably connected to the side of the helical blade through a rotating hole, and the bottom of the vibration base is fixedly connected to the top of the vibration base.

9. The countercurrent ultrasonic extraction device for lentinan according to claim 4, characterized in that: The feeding assembly includes a mixing pipe, a water supply pipe connected to one side of the top of the mixing pipe, a feeding pipe connected to the top of the mixing pipe at the side of the water supply pipe, a fixed end of a screw pusher fixedly connected to the side of the mixing pipe, the side of the mixing pipe connected to the side of the stirring pipe, and the mixing pipe being positioned on one side of the rotating base.

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