Dendrobium officinale extracting solution filtering and deslagging device

Abstract

The invention relates to the technical field of filtering and deslagging, and discloses a filtering and deslagging device for a dendrobium officinale extracting solution, which solves the problems that the extracting solution is dark in color and the concentrated solution is easy to precipitate in the prior art. According to the device, a soaking solution is guided into an extraction cabin from a feeding hole, an ultrasonic generator and a heating device are used for synergistically extracting, a servo motor drives turbine blades to rotate, a planetary gear drives a middle-layer rotating plate to rotate, and a circumferential groove and a radial groove are mechanically linked, so that a coarse filtering pipe realizes the transmission of the extracting solution in reciprocating motion by virtue of the pushing action of a spiral blade; when the electromagnetic valve is opened, pressure shock effectively inhibits polysaccharide degradation, an extracting solution enters the concentration cabin after treatment, turbine blades rotate to form a vacuum environment, a filter membrane is subjected to centrifugal fine filtration under transmission of a planetary gear, and finally, a concentrated solution is discharged through a discharge port, so that the problems that the extracting solution is dark in color and the concentrated solution is easy to precipitate in a traditional process are solved; the retention rate of the active ingredients of the dendrobium officinale and the purity of the extracting solution are obviously improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of filtering and removing residues, and particularly relates to a Dendrobium officinale extract liquid filtering and residue removing device. BACKGROUND

[0002] Dendrobium officinale is a perennial herbaceous plant of Orchidaceae, and the stems contain active ingredients such as polysaccharides and alkaloids. The extract liquid can be used in the fields of traditional Chinese medicine and health products. The extract liquid contains impurities such as plant fibers and colloids, and needs to be filtered and residue removed to improve the purity and stability. The existing filtering device includes mechanical filtering, such as plate and frame filter pressing and bag filtering, which relies on pressure or filter bag to intercept impurities; centrifugal separation, such as horizontal screw centrifuge, which separates impurities by centrifugal force; and membrane separation, such as microfiltration and ultrafiltration, which filters by using membranes with different pore sizes and combined devices, and different methods can be selected according to requirements.

[0003] The existing technology with the announcement number CN217854863U discloses a Dendrobium officinale extract liquid filtering and residue removing device, which includes a tank body and a filter screen. The filter screen can separate the tank body into a mixing area and a pure liquid area. An inlet is arranged on the tank body and is in communication with the mixing area. An outlet is arranged on the side wall of the tank body and can be used for the liquid in the pure liquid area to flow out of the tank body. A stirring frame is arranged in the mixing area and is provided with a plurality of scrapers. A driving motor is further arranged and the output end of the driving motor penetrates through the tank body and is connected with the stirring frame. The device provides a Dendrobium officinale extract liquid filtering and residue removing device with simple process and low cost through a mechanical structure.

[0004] For the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: 1. The filtering device in the existing technology is mainly used for removing mechanical impurities and does not integrate the decolorization function. In the traditional extraction process, high temperature is often relied on. High temperature can promote the destruction of plant cell walls to release effective components, but also makes the deep-colored pigments originally existing in the cells more easily dissolved and stably exist in the water-soluble extract liquid, resulting in the residual of anthocyanins, polyphenols and other pigment components in the extract liquid, which presents a deep brown color or turbidity. The existing technology can only remove solid residue particles, and has no way to deal with the dissolved pigment molecules. This defect directly leads to the product appearance not meeting the food and health product industry standards, and the deep color state often accompanies the oxidation and degradation of active ingredients, affecting the product efficacy. At the same time, the enterprise needs to additionally increase the processes of activated carbon adsorption and membrane decolorization, which leads to the increase of production cost, the extension of production cycle, and the easy adsorption of pigments on the inner wall of the equipment to form a biofilm, increasing the risk of microbial contamination and cleaning cost.

[0005] 2、 The existing filtration technology has insufficient interception capacity for protein colloids, polysaccharide agglomerates and other small impurities, resulting in the aggregation and precipitation of impurities in the concentration process, forming flocculent or granular precipitates. This phenomenon directly violates the relevant food safety standards "no visible precipitate", which may lead to product recall; the degradation of components accompanied by precipitation may cause pH fluctuation, even breeding pathogenic bacteria, which may cause safety hazards; in addition, the precipitate needs to be re-filtered, resulting in increased material loss rate, decreased heat transfer efficiency of the concentration equipment, frequent acid liquid cleaning and increased equipment maintenance cost. SUMMARY

[0006] The technical problem to be solved by the present application is that the existing technology has the shortcomings of deep color of the extract and easy precipitation of the concentrated liquid. Therefore, we propose a Dendrobium candidum extract filtration and dreg removal device.

[0007] To achieve the above purpose, the following technical scheme is adopted in the present application: a Dendrobium candidum extract filtration and dreg removal device, comprising a filter box, a lower layer of the filter box is provided with a lower layer of the inner wall of the quarter height at the lower end of the installation of the baffle, the inner circle of the lower layer of the baffle is nested with the lower layer of the rotating plate, the inner circle of the lower layer of the rotating plate is nested with the lower layer of the fixed plate, the inner wall of the middle part of the filter box is provided with a middle layer of the baffle, the inner circle of the middle layer of the baffle is nested with the middle layer of the rotating plate, the center of the lower layer of the fixed plate and the middle layer of the rotating plate is provided with a cylindrical through hole and is installed with a coarse filter pipe, the middle part of the coarse filter pipe is installed with a rotating rod, the outer surface of the lower end of the rotating rod is installed with a spiral blade, the upper end of the rotating rod is installed with four layers of stepped filter screens, the filter screens are fixedly connected with the coarse filter pipe, the top end of the coarse filter pipe is installed with an electromagnetic valve; the outer peripheral surface of the coarse filter pipe at the connection with the middle layer of the rotating plate is processed with an upper end protruding part, the outer peripheral surface of the coarse filter pipe at the connection with the lower layer of the fixed plate is processed with a lower end protruding part, the inner circle of the middle layer of the rotating plate is provided with a spiral circumferential groove, the inner circle of the lower layer of the fixed plate is provided with a vertical radial groove, the upper end protruding part is embedded in the circumferential groove, and the lower end protruding part is embedded in the radial groove.

[0008] Preferably, the filter box is divided into three independent cabins by the middle layer of the baffle and the lower layer of the baffle, the filter box is sequentially the extraction cabin, the water cooling cabin and the concentration cabin from bottom to top, the inner wall of the upper end of the filter box is provided with an upper layer of the baffle, the extraction cabin is formed by the lower layer of the baffle and the filter box, the water cooling cabin is formed by the lower layer of the baffle, the middle layer of the baffle and the filter box, and the concentration cabin is formed by the upper layer of the baffle, the middle layer of the baffle and the filter box.

[0009] Preferably, the extraction cabin is provided with a feeding port on one side, the extraction cabin is provided with an ethanol supplement port on the other side, the inner wall of the extraction cabin is provided with an ultrasonic generator at the position perpendicular to the installation surface of the feeding port-ethanol supplement port, the middle part of the extraction cabin is provided with a heating coil, the bottom of the extraction cabin is provided with a scraper, and the upper part of the scraper extends out a connecting rod which is fixedly connected with the lower layer of the rotating plate.

[0010] Preferably, the water cooling cabin is provided with a water inlet on one side, a water outlet on the other side, the water inlet is located directly above the material inlet, and the water outlet is located directly above the ethanol supplementing port, and the agitating plate is installed between the middle layer turning plate and the lower layer turning plate.

[0011] Preferably, the sodium bicarbonate supplementing port is installed on the upper end of the outer wall of the concentration cabin perpendicular to the installation surface of the water inlet and the water outlet, the discharge port is installed on the lower end of the other side of the concentration cabin, the control center is installed directly below the sodium bicarbonate supplementing port, the pH sensor is installed on the inner wall of the concentration cabin at the back of the control center, the filter membrane is installed above the middle layer turning plate and fixedly connected with the middle layer turning plate, the planetary orbit is installed at the top end of the filter membrane, the planetary gear is installed in meshing on the planetary orbit, the turbine blade is installed in the middle part of the planetary orbit, the driving end above the turbine blade is installed with the servo motor, the servo motor is fixed on the upper surface of the upper layer baffle, and the one-way valve is installed above the servo motor.

[0012] Preferably, the rotating rod is embedded in the middle part of the turbine blade to form a fixed connection.

[0013] Preferably, when the coarse filter pipe rises to the highest position, the spiral blade is exposed outside, and when the coarse filter pipe falls to the lowest position, the lower end surface of the coarse filter pipe is flush with the end surface of the spiral blade.

[0014] Preferably, the filter screen adopts a four-layer stepped structure, and the pore size gradually decreases from bottom to top.

[0015] Preferably, annular grooves are formed between the middle layer baffle and the middle layer turning plate and embedded with the rotor, annular grooves are formed between the lower layer baffle and the lower layer turning plate and embedded with the rotor, and annular grooves are formed between the lower layer turning plate and the lower layer fixed plate and embedded with the rotor.

[0016] Preferably, the middle part of the planetary gear is installed with the connecting rod, and the connecting rod is fixed to the bottom surface of the upper layer baffle.

[0017] Technical effects and advantages of the present application: In the present application, the circumferential groove and the radial groove of the coarse filter pipe are matched with the middle layer turning plate and the lower layer fixed plate, so that the coarse filter pipe realizes the transmission of the extraction liquid in the reciprocating motion of "slowly rising-suddenly falling", the pressure difference in the opening moment of the electromagnetic valve forms a pressure shock, the hydrogen bond and the disulfide bond of the enzyme protein are destroyed, the activity of the enzyme protein in catalyzing the degradation of polysaccharide is inhibited, and the extraction liquid is rapidly cooled in the water cooling cabin, so that the polysaccharide degradation rate is significantly reduced under the double action, and the efficient reservation of active ingredients is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0018] The disclosure of the present application will be described with reference to the accompanying drawings. It is to be noted, however, that the drawings illustrate only a typical embodiment of the application and therefore should not be considered to limit the scope of the present application. In the drawings: Figure 1 A perspective view of the overall structure of the present application; Figure 2 A perspective view of the overall structure of the present application; Figure 3 A plan view of the overall structure of the present application; Figure 4 A perspective view of the hot reflux extraction chamber of the present application; Figure 5 A perspective view of the water cooling chamber of the present application; Figure 6 A perspective view of the concentration chamber of the present application; Figure 7 A perspective view of a portion of the present application; Figure 8 A perspective view of a portion of the present application; Figure 9 A perspective view of the middle layer rotating plate of the present application; Figure 10 A perspective view of the lower layer fixed plate of the present application.

[0019] Legend: 1, filter box; 2, inlet; 3, ethanol supplement inlet; 4, residue discharge outlet; 5, lower layer partition; 6, extraction chamber; 7, ultrasonic generator; 8, scraper; 9, heating coil; 10, lower layer rotating plate; 11, lower layer fixed plate; 12, rotor; 13, coarse filter tube; 14, helical blade; 15, rotating rod; 16, filter screen; 17, middle layer partition; 18, water cooling chamber; 19, water inlet; 20, water outlet; 21, middle layer rotating plate; 22, stirring plate; 23, upper layer partition; 24, concentration chamber; 25, sodium bicarbonate supplement inlet; 26, discharge outlet; 27, pH sensor; 28, electromagnetic valve; 29, filter membrane; 30, planetary orbit; 31, servo motor; 32, lock catch; 33, planetary gear; 34, turbine blade; 35, upper end protrusion; 36, lower end protrusion; 37, circumferential groove; 38, radial groove; 39, control center; 40, one-way valve. DETAILED DESCRIPTION

[0020] It is easy to understand that according to the technical solution of the present application, those skilled in the art can propose a variety of structures and implementation modes that can be replaced with each other without changing the essential spirit of the present application. Therefore, the following specific embodiments and drawings are only exemplary descriptions of the technical solution of the present application, and should not be regarded as the whole or as the limitation or restriction of the technical solution of the present application.

[0021] Referring to Figures 1-4 As shown in the drawings, the present application provides a technical solution: a Dendrobium officinale extract liquid filtering and residue removing device, which comprises a filter box 1 designed in a cylindrical shape, the upper and lower bottom surfaces of which are treated with a circular arc to reduce stress concentration, and supports are arranged at the four corners of the lower end to provide stable support, a feeding port 2 is arranged at one side of the lower end of the filter box 1, which is connected with a pretreatment process pipeline through a flange, and receives Dendrobium officinale soaking liquid, and a flow regulating valve is arranged at the feeding port 2 to accurately control the feeding amount; an ethanol supplement port 3 is arranged at the other side of the lower end of the filter box 1, which is also connected with a flange, and is used for supplementing ethanol solvent to adjust the concentration of the extract liquid, so as to prevent polysaccharide molecules from gathering due to too high concentration, and a residue discharging port 4 is formed by converging the lower bottom surface of the filter box 1, which is controlled by a pneumatic valve to open and close, so as to facilitate the discharge of the residue after extraction.

[0022] A lower partition plate 5 is welded and installed on the inner wall of the filter box 1 at about one quarter of the height of the lower end, and the lower partition plate 5 and the lower bottom surface of the filter box 1 form a closed extraction cabin 6. The hot reflux extraction process is carried out in the extraction cabin 6, and an ultrasonic generator 7 is installed on the inner wall of the extraction cabin 6 at right angles to the installation surface of the feeding port 2-ethanol supplement port 3 through bolts, a heating coil 9 is installed in the middle of the extraction cabin 6, the mass transfer process is intensified by 20-40 kHz high frequency vibration when the ultrasonic generator 7 is running, and the effective component dissolution rate is improved under the condition of 60-80℃ hot reflux in the extraction cabin 6, while the extraction temperature is reduced. The lower partition plate 5 is designed in a hollow circular ring structure, a lower rotating plate 10 is nested and installed in the inner ring, and an annular groove is processed at the connecting surface of the lower partition plate 5 and the lower rotating plate 10, the rotating plate 12 in the annular groove is used for rotating connection, and a rubber sealing ring is additionally installed at the edge of the groove to ensure the sealing property. Four scrapers 8 are vertically installed on the upper top surface of the arc-shaped bottom plate of the lower bottom surface of the filter box 1, the scrapers 8 are welded and fixed with the lower rotating plate 10 through connecting rods, a lower fixed plate 11 is nested in the inner ring of the lower rotating plate 10, the lower rotating plate 10 is also rotatingly connected with the lower fixed plate 11 through the rotating plate 12, a cylindrical through hole is formed in the center of the lower fixed plate 11 and a coarse filter pipe 13 is tightly nested in the through hole, and the coarse filter pipe 13, the lower fixed plate 11, the lower rotating plate 10 and the lower partition plate 5 form a four concentric circular nested structure. The extraction-filter assembly is integrated in the coarse filter pipe 13, a rotating rod 15 is installed in the middle of the coarse filter pipe 13, helical blades 14 are installed on the outer surface of the lower end of the rotating rod 15, four layers of stepped filter screens 16 are installed on the upper end of the rotating rod 15, the hole diameters are gradually reduced from bottom to top, different particle size residues can be effectively intercepted, and the coarse filtering function is realized.

[0023] Referring to Figures 1-5 As shown in the figure, in the present embodiment: a middle layer partition plate 17 is welded and installed on the inner wall of the middle part of the filter box 1, and the middle layer partition plate 17, together with the lower layer partition plate 5, the inner wall of the filter box 1, constitutes a closed space water cooling cabin 18, forms an efficient cooling channel of the extraction liquid, and the water cooling cabin 18 adopts a symmetrical circulation design. A water inlet 19 is arranged on the outer wall of the filter box 1 directly above the inlet 2, and a water outlet 20 is arranged corresponding to the ethanol supplement port 3. After the cooling water flows into the water inlet 19, it flows along the annular space of the water cooling cabin 18 and fully exchanges heat with the outer wall of the coarse filter pipe 13, and finally is discharged from the water outlet 20, realizing continuous heat exchange. A cylindrical through hole is arranged at the center of the middle layer partition plate 17, and a middle layer rotating plate 21 is nested in the inner ring. An annular groove is processed between the middle layer partition plate 17 and the middle layer rotating plate 21, and a rotor 12 in the groove realizes low-friction rotation. Rubber sealing rings are installed on the edges of the groove to prevent cooling water leakage. An agitating plate 22 is welded and installed below the middle layer rotating plate 21, and the lower end of the agitating plate 22 is fixedly connected with the lower layer rotating plate 10, forming an upper and lower linkage structure. When in operation, the middle layer rotating plate 21, the agitating plate 22, the lower layer rotating plate 10 and the scraper 8 rotate synchronously. The agitating plate 22 is designed in an arc shape to guide the cooling water to form a spiral flow, strengthen the degree of turbulence, and make the temperature distribution in the water cooling cabin 18 more uniform, thereby improving the heat exchange efficiency and achieving the purpose of inhibiting pigment generation and enzyme activity. At the same time, the dynamic water flow also prevents the deposition of water scale in the water cooling cabin 18, prolongs the service life of the device, and provides an intermediate product with controllable temperature and stable composition for the subsequent concentration process.

[0024] Referring to Figures 1-7As shown, in the present embodiment: the inner wall of the filter box 1 about seven-eighth height of the upper end is welded and installed with an upper partition plate 23, the upper partition plate 23 and the middle partition plate 17, the inner wall of the filter box 1 together constitute a closed space concentration cabin 24, as the core area of the extraction liquid concentration and component stability treatment, the outer wall of the concentration cabin 24 is orthogonally installed with a sodium bicarbonate supplement port 25 on the upper end of the water inlet 19-outlet 20 installation surface, for supplementing sodium bicarbonate solution into the concentration cabin 24 to adjust the acid-base environment of the extraction liquid, corresponding to the lower end of the other side, a discharge port 26 is opened, the pipe opening of the discharge port 26 is located above the middle partition plate 17, the sodium bicarbonate supplement port 25 and the discharge port 26 are connected through flanges and corresponding process pipelines, and flow regulating valves are configured to accurately control the supplement and discharge amount, the control center 39 is installed below the sodium bicarbonate supplement port 25 and on the outer circumferential surface of the filter box 1, the pH sensor 27 is installed on the back of the control center 39 and on the inner circumferential surface of the filter box 1, the coarse filter pipe 13 extends upward from the center of the middle layer rotating plate 21 to the concentration cabin 24, the outer circumferential surface of the top end of the coarse filter pipe 13 is installed with an electromagnetic valve 28, a groove is opened on the upper surface of the middle layer rotating plate 21, a filter membrane 29 is installed above the middle layer rotating plate 21, a planetary orbit 30 is installed on the top end surface of the filter membrane 29, the inner ring of the planetary orbit 30 is processed with a tooth surface, two planetary gears 33 are meshed and installed on the tooth surface, a connecting rod is connected and installed in the middle of the two planetary gears 33 through a key, the connecting rod extends upward and is fixedly connected with the upper partition plate 23, a turbine blade 34 is installed in the middle of the planetary orbit 30, a tooth surface is processed on the outer edge surface of the turbine blade 34 and is meshed and transmitted torque with the two planetary gears 33, a through hole is opened in the center of the turbine blade 34, the rotating rod 15 in the coarse filter pipe 13 extends vertically upward and is inserted into the through hole of the turbine blade 34 to form a fixed connection, a servo motor 31 is installed above the turbine blade 34, the driving shaft of the servo motor 31 is inserted into the center through hole of the turbine blade 34, the servo motor 31 is driven, the turbine blade 34 and the rotating rod 15 are synchronously driven to rotate, the spiral blade 14 is driven to rotate, it should be noted that the four-layer filter screen 16 is fixed on the inner wall of the coarse filter pipe 13, a through hole is opened in the middle to facilitate the rotating rod 15 to pass through, and it will not rotate synchronously with the rotating rod 15, the spiral blade 14 is sleeved on the rotating rod 15 and rotates synchronously with the rotating rod 15, the upper partition plate 23 and the top cover of the filter box 1 constitute a cavity, the servo motor 31 is located in the cavity and is fixed on the bottom of the top cover of the filter box 1 through bolts, the top cover and the box body of the filter box 1 are fixed through a lock buckle 32 to ensure the airtightness, a through hole is drilled in the upper part of the top cover, a one-way valve 40 is installed outside the through hole, the turbine blade 34 continuously extracts the air in the concentration cabin 24 into the cavity, and the air is discharged outward through the one-way valve 40.

[0025] Referring to Figures 8-10As shown, in the present embodiment: It should be noted that the coarse filter tube 13 is machined with an upper end protruding part 35 on the outer peripheral surface at the connection with the middle layer rotating plate 21, and a lower end protruding part 36 on the outer peripheral surface at the connection with the lower layer fixed plate 11, a spiral-shaped circumferential groove 37 is opened in the inner circle of the middle layer rotating plate 21, a vertical radial groove 38 is opened in the inner circle of the lower layer fixed plate 11, the upper end protruding part 35 is embedded in the circumferential groove 37, and the lower end protruding part 36 is embedded in the radial groove 38, as the servo motor 31 drives the turbine blade 34 to rotate, the filter membrane 29 is driven to rotate through the planetary gear 33 and the planetary track 30, the filter membrane 29 is fixedly connected with the middle layer rotating plate 21, driving the middle layer rotating plate 21 to rotate synchronously, the middle layer rotating plate 21 transmits the rotation to the lower layer rotating plate 10 through the stirring plate 22, the lower layer rotating plate 10 is rotationally connected with the lower layer fixed plate 11, and the lower layer fixed plate 11 does not rotate synchronously with the lower layer rotating plate 10, the radial groove 38 on the inner circle provides rotation limiting for the coarse filter tube 13, limiting the circumferential rotation of the coarse filter tube 13, and only completing the vertical displacement, as the middle layer rotating plate 21 rotates, the circumferential groove 37 drives the coarse filter tube 13 to realize the motion track of "slowly rising - suddenly falling" through the upper end protruding part 35, when the upper end protruding part 35 runs to the highest position of the circumferential groove 37, the lifting position of the coarse filter tube 13 is the highest, so that the spiral blade 14 is exposed, the rotating rod 15 drives the spiral blade 14 to continuously rotate, the upper end protruding part 35 suddenly falls in the circumferential groove 37, driving the coarse filter tube 13 to drop to the lowest position, at this time, the end surface of the coarse filter tube 13 is flush with the end surface of the spiral blade 14, and forms a closed space, as the spiral blade 14 rotates upward, the extract liquid is spirally lifted along the inside of the coarse filter tube 13, first passes through the water cooling cabin 18 to realize heat exchange, and the temperature of the extract liquid is lowered to 40-50℃, so as to prevent polysaccharide decomposition, then passes through the four layers of filter screens 16 to realize coarse filtration, and the electromagnetic valve 28 is opened, at this time, due to the large pressure difference between the coarse filter tube 13 and the concentration cabin 24, the pressure is suddenly changed in an instant after the electromagnetic valve 28 is opened, causing the hydrogen bond and disulfide bond in the enzyme molecule to break, so that the spatial structure is disordered, thereby reducing the ability of catalyzing polysaccharide degradation, so as to realize the function of inhibiting polysaccharide degradation.

[0026] Working principle: the user flows the pretreated Dendrobium candidum immersion liquid from the inlet 2 into the hot reflux extraction cabin 6, the ethanol supplement port 3 synchronously adjusts the solvent concentration, the ultrasonic generator 7 and the heating device 9 cooperate to carry out low-temperature extraction; the servo motor 31 drives the turbine blade 34 to rotate, the planetary gear 33 drives the middle layer rotating plate 21 to rotate, the circumferential groove 37 in the inner circle of the middle layer rotating plate 21 is matched with the protruding part 35 at the upper end of the rough filter pipe 13, the radial groove 38 in the inner circle of the lower fixed plate 11 is matched with the protruding part 36 at the lower end of the rough filter pipe 13, so that the rough filter pipe 13 does the reciprocating motion of ''slowly rising-suddenly falling'' along the vertical direction. When the rough filter pipe 13 rises, the internal spiral blade 14 rotates along with the rotating rod 15 to spiral the extraction liquid along the pipe wall; when the rough filter pipe 13 suddenly falls, the end face of the rough filter pipe 13 is flush with the end face of the spiral blade 14 to form a closed space, the spiral blade 14 rotates upwards to push the extraction liquid to the water cooling cabin 18 for cooling, and the extraction liquid is preliminarily filtered through the filter screen 16, then the electromagnetic valve 28 is opened, at this time, there is a pressure difference between the rough filter pipe 13 and the concentration cabin 24, the electromagnetic valve 28 is opened, and the pressure is suddenly changed in the moment, the hydrogen bond and the disulfide bond in the enzyme molecule are destroyed, the spatial structure is disordered, and the ability of catalyzing polysaccharide degradation is reduced, so that the extraction liquid is treated and enters the concentration cabin 24. In the concentration cabin 24, the turbine blade 34 rotates to form a vacuum environment, the filter membrane 29 is driven to realize centrifugal fine filtration under the drive of the planetary gear 33, the control center 39 adjusts the sodium bicarbonate supplement amount according to the pH sensor 27 data to maintain the pH value stable, and finally the concentrated liquid is discharged from the discharge port 26, and the residue is removed from the residue discharge port 4. Through the mechanical linkage of the circumferential groove 37 and the radial groove 38, the rough filter pipe 13 realizes the transmission of the extraction liquid in the reciprocating motion by the pushing action of the spiral blade 14, the pressure is suddenly changed when the electromagnetic valve 28 is opened, the polysaccharide degradation is effectively inhibited, the low-temperature extraction, rapid cooling, vacuum concentration and impurity removal are synchronously completed, the problems of deep color of the extraction liquid and easy precipitation of the concentrated liquid in the traditional process are solved, and the retention rate of the active ingredients of Dendrobium candidum and the purity of the extraction liquid are significantly improved.

[0027] The technical scope of the present application is not limited to the content in the above description, and those skilled in the art can make various modifications and changes to the above embodiments without departing from the technical idea of the present application, and these modifications and changes should belong to the protection scope of the present application.

Claims

1. A device for filtering and removing residue from Dendrobium officinale extract, characterized in that, The filter includes a filter box, on the inner wall of which a lower partition is installed at the bottom quarter height. A lower rotating plate is nested in the inner ring of the lower partition, and a lower fixed plate is nested in the inner ring of the lower rotating plate. A middle partition is installed on the inner wall of the middle part of the filter box, and a middle rotating plate is nested in the inner ring of the middle partition. A cylindrical through hole is opened at the center of the lower fixed plate and the middle rotating plate, and a coarse filter tube is installed thereon. A rotating rod is installed in the middle of the coarse filter tube. A spiral blade is installed on the outer surface of the lower end of the rotating rod. A four-layer stepped filter screen is installed at the upper end of the rotating rod. The filter screen is fixedly connected to the coarse filter tube. A solenoid valve is installed at the top of the coarse filter tube. The coarse filter tube has an upper protrusion on its outer circumferential surface at the connection with the middle rotating plate, and a lower protrusion on its outer circumferential surface at the connection with the lower fixed plate. The middle rotating plate has a spiral circumferential groove on its inner ring, and the lower fixed plate has a vertical radial groove on its inner ring. The upper protrusion is embedded in the circumferential groove, and the lower protrusion is embedded in the radial groove.

2. The filtration and residue removal device for Dendrobium officinale extract according to claim 1, characterized in that: The filter box is divided into three independent compartments by a middle partition and a lower partition. From bottom to top, the filter box consists of an extraction compartment, a water-cooling compartment, and a concentration compartment. An upper partition is installed on the inner wall of the filter box at about seven-eighths of its height. The extraction compartment is composed of the lower partition and the filter box. The water-cooling compartment is composed of the lower partition, the middle partition, and the filter box. The concentration compartment is composed of the upper partition, the middle partition, and the filter box.

3. The filtration and residue removal device for Dendrobium officinale extract according to claim 2, characterized in that: An inlet is provided on one side of the extraction chamber, and an ethanol replenishment port is provided on the other side of the extraction chamber. An ultrasonic generator is installed on the inner wall of the extraction chamber at the mounting surface of the inlet-ethanol replenishment port, an ultrasonic coil is installed in the middle of the extraction chamber, and a scraper is installed at the bottom of the extraction chamber. A connecting rod extends from the top of the scraper and is fixedly connected to the lower rotating plate.

4. The filtration and residue removal device for Dendrobium officinale extract according to claim 2, characterized in that: A water inlet is provided on one side of the water-cooled chamber, and a water outlet is provided on the other side of the water-cooled chamber. The water inlet is located directly above the feed inlet, and the water outlet is located directly above the ethanol replenishment inlet. An agitator is installed between the middle rotating plate and the lower rotating plate.

5. The filtration and residue removal device for Dendrobium officinale extract according to claim 2, characterized in that: A sodium bicarbonate replenishment port is provided on the upper part of the outer wall of the concentration chamber, perpendicular to the inlet-outlet mounting surface. A discharge port is provided on the lower part of the concentration chamber on the opposite side. A control center is installed directly below the sodium bicarbonate replenishment port. A pH sensor is installed on the back of the control center and on the inner wall of the concentration chamber. A filter membrane is installed above the middle layer rotating plate and is fixedly connected to the middle layer rotating plate. A planetary track is installed at the top of the filter membrane, and planetary gears are meshed on the planetary track. A turbine blade is installed in the middle of the planetary track. A servo motor is installed at the drive end above the turbine blade. The servo motor is fixed to the upper surface of the upper partition plate, and a one-way valve is installed above the servo motor.

6. The filtration and residue removal device for Dendrobium officinale extract according to claim 1, characterized in that: The rotating rod is embedded in the middle of the turbine blade to form a fixed connection.

7. The filtration and residue removal device for Dendrobium officinale extract according to claim 1, characterized in that: When the coarse filter tube rises to its highest point, the spiral blades are exposed; when the coarse filter tube falls to its lowest point, the lower end face of the coarse filter tube remains flush with the end face of the spiral blades.

8. The filtration and residue removal device for Dendrobium officinale extract according to claim 1, characterized in that: The filter screen adopts a four-layer stepped structure, with the pore size decreasing from bottom to top.

9. The filtration and residue removal device for Dendrobium officinale extract according to claim 5, characterized in that: An annular groove is formed between the middle partition plate and the middle rotating plate, and the rotor is embedded therein. An annular groove is formed between the lower partition plate and the lower rotating plate, and the rotor is embedded therein. An annular groove is formed between the lower rotating plate and the lower fixed plate, and the rotor is embedded therein.

10. A filtration and residue removal device for Dendrobium officinale extract according to claim 5, characterized in that: A connecting rod is installed in the middle of the planetary gear, and the connecting rod is fixed to the bottom surface of the upper partition.

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