A low-temperature concentration membrane separation device for five-finger peach extract

Abstract

This utility model discloses a low-temperature concentration membrane separation device for *Ficus hirta* extract, comprising: a separation chamber; and a cleaning component, the cleaning component including a filter membrane, blades, a lower rotating rod, a rotating shaft, a servo motor, and an upper rotating rod. The filter membrane is disposed on the upper part of the inner surface of the separation chamber. The servo motor is fixedly connected to the middle of the top end of the rotating shaft, which is disposed on the middle of the top end of the inner surface of the separation chamber. The upper rotating rod is rotatably connected to the bottom of the rotating shaft, and the lower rotating rod is disposed at the bottom of the upper rotating rod. The blades are fixedly connected to the outer wall of the lower rotating rod. Through the cleaning component, when the upper and lower rotating rods rotate synchronously, they drive the blades to form a three-dimensional rotating flow field. The centrifugal force generated by the blades can throw off the sticky colloidal substances adhering to the surface of the filter membrane, while the shear force can break up the colloidal aggregates, effectively preventing the formation of a dense adhesion layer of colloids on the filter membrane surface, thereby ensuring the continuity of production.

Description

Technical Field

[0001] This utility model relates to the technical field of plant extract processing equipment, specifically a low-temperature concentration membrane separation device for five-finger peach extract. Background Technology

[0002] As a plant used both as food and medicine, *Ficus hirta* extract is rich in active ingredients such as polysaccharides, flavonoids, and amino acids, and has wide applications in the food, health product, and pharmaceutical fields. These active ingredients are temperature-sensitive, and traditional high-temperature concentration easily leads to degradation. Therefore, the industry generally adopts a combined process of membrane separation and low-temperature concentration to achieve efficient purification and concentration of the extract. The membrane separation process must operate at low temperatures.

[0003] In practical applications, to meet the feed requirements of the membrane separation stage, stainless steel filter screens are typically used to trap large particulate impurities in the crude extract, while polytetrafluoroethylene (PTFE) filter cartridges are used to further remove fine suspended particles. However, in addition to solid particles, the crude extract of *Ficus hirta* contains a large amount of polysaccharide viscous substances and plant protein colloids. The particle size of these substances is much smaller than the retention threshold of the PTFE filter cartridge, allowing them to completely penetrate the two-stage filtration system and enter the subsequent membrane module with the feed liquid. The polysaccharide viscous substances and plant protein colloids entering the membrane module accumulate on the membrane surface due to the sieving effect, forming a dense gel layer. This gel layer not only significantly reduces membrane flux but also increases the operating pressure of the membrane module, increases energy consumption, and affects the continuity of production. Utility Model Content

[0004] The purpose of this invention is to provide a low-temperature concentration membrane separation device for *Ficus hirta* extract, thereby solving the problems mentioned in the background section. To solve these technical problems, this invention is achieved through the following technical solution:

[0005] This utility model relates to a low-temperature concentration membrane separation device for extracts from *Ficus hirta*, comprising:

[0006] A separation chamber is provided with a low-temperature concentration tank on one side of its outer surface. A solenoid valve is provided at the lower part of one end of the outer surface of the low-temperature concentration tank. A second tube is provided between the solenoid valve and the separation chamber. A vacuum pump is provided at the top of the low-temperature concentration tank. A collection tank is fixed on one side of the low-temperature concentration tank. A first tube is provided between the collection tank and the vacuum pump. A condenser is provided on the outer surface of the first tube. A heat pump heating jacket is provided on the inner surface of the low-temperature concentration tank.

[0007] The cleaning component includes a filter membrane, blades, a lower rotating rod, a rotating shaft, a servo motor, and an upper rotating rod. The filter membrane is disposed on the upper part of the inner surface of the separation chamber. The servo motor is fixedly connected to the middle of the top end of the rotating shaft. The rotating shaft is disposed at the middle of the top end of the inner surface of the separation chamber. The upper rotating rod is rotatably connected to the bottom of the rotating shaft. The lower rotating rod is disposed at the bottom of the upper rotating rod. The blades are fixedly connected to the outer wall of the lower rotating rod.

[0008] Furthermore, the filter membrane has filter pores inside, and the filter pores are evenly distributed.

[0009] Furthermore, a support frame is welded to one end of the outer surface of the separation chamber, and turntables are provided at the top and bottom of the inner surface of the support frame. A lead screw is rotatably connected between the two turntables, and a nut ring is threaded onto the outer surface of the lead screw. A reduction motor is fixedly connected to the top of the support frame.

[0010] Furthermore, a mounting bracket is welded to the top of the servo motor, and a support rod is fixedly connected between the mounting bracket and the nut ring.

[0011] Furthermore, a guide rod is provided at the other end of the top of the separation chamber, and a second support rod is provided at the other end of the outer surface of the fixing frame. A guide ring is provided at the outer end of the second support rod, and the guide ring is slidably connected to the outside of the guide rod.

[0012] Furthermore, a top cover is embedded in the top of the separation chamber, and a feed inlet is opened at one end of the top of the top cover.

[0013] Furthermore, it also includes a fixing component, which includes a chuck and a slot. The slot is located at the middle of the bottom end of the upper rotating rod, and the chuck is fixed at the middle of the top end of the lower rotating rod. The outer surface of the chuck is engaged with the inside of the slot.

[0014] Furthermore, a rubber rod is adhered to the outer wall of the chuck, and a fixing hole is provided on the outside of the upper rotating rod, the fixing hole being adapted to the rubber rod.

[0015] This utility model has the following beneficial effects:

[0016] This invention, through the cleaning component, causes the upper and lower rotating rods to rotate synchronously, driving the blades to form a three-dimensional rotating flow field. The centrifugal force generated by the blades can throw the sticky colloidal substances attached to the surface of the filter membrane outward, while the shearing force can break up the colloidal aggregates, which can effectively prevent the colloidal substances from forming a dense adhesion layer on the surface of the filter membrane, thereby ensuring the continuity of production. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall separation chamber of this utility model;

[0019] Figure 2 This is a schematic diagram of the interior of the separation chamber of this utility model;

[0020] Figure 3 This is a schematic diagram showing the upper and lower rotating rods after disassembly.

[0021] Figure 4 This is a bottom view of the upper and lower rotating rods after they have been separated.

[0022] Figure 5 This is a schematic diagram of the filter membrane of this utility model.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 11. Separation chamber; 12. Top cover; 13. Feed inlet; 14. Tube body one; 15. Condenser; 16. Collection tank; 17. Heat pump heating jacket; 18. Solenoid valve; 19. Vacuum pump; 191. Tube body two; 192. Low temperature concentration tank; 21. Filter membrane; 22. Blade; 23. Lower rotating rod; 24. Rotating shaft; 25. Servo motor; 26. Upper rotating rod; 27. Filter hole; 31. Support frame; 32. Gear motor; 33. Lead screw; 34. Turntable; 35. Support rod one; 36. Nut ring; 37. Fixing frame; 41. Guide rod; 42. Support rod two; 43. Guide ring; 51. Chuck; 52. Rubber rod; 53. Slot; 54. Fixing hole. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0027] Please seeFigures 1-5 As shown, this utility model is a low-temperature concentration membrane separation device for *Ficus hirta* extract, comprising:

[0028] Separation chamber 11; a low-temperature concentration tank 192 is provided on one side of the outer surface of the separation chamber 11, a solenoid valve 18 is provided at the lower part of one end of the outer surface of the low-temperature concentration tank 192, a second tube 191 is provided between the solenoid valve 18 and the separation chamber 11, a vacuum pump 19 is provided at the top of the low-temperature concentration tank 192, a collection tank 16 is fixed on one side of the low-temperature concentration tank 192, a first tube 14 is provided between the collection tank 16 and the vacuum pump 19, a condenser 15 is provided on the outer surface of the first tube 14, and a heat pump heating jacket 17 is provided on the inner surface of the low-temperature concentration tank 192;

[0029] The separation chamber 11 has a built-in concentration detection module to monitor the concentration change of the retentate in the chamber in real time. When the concentration of the retentate reaches a preset threshold, the concentration detection module sends a signal to the control unit, the solenoid valve 18 opens, and the retentate enters the interior of the low-temperature concentration tank 192 through the second pipe 191. At the same time, the internal heat pump heating jacket 17 is started. The heat pump heating jacket 17 adopts low-temperature heating technology to precisely control the heating temperature within the range of 30-50℃. This temperature range can effectively achieve the evaporation of water in the retentate, while avoiding the denaturation and destruction of active ingredients in the retentate due to high temperature, thus ensuring the effective component content of the retentate. During the concentration process, the water vapor generated by the evaporation of the retentate enters the condenser 15 through the first pipe 14 at the top of the low-temperature concentration tank 192. At the same time, the vacuum pump 19 is started, forming a micro-negative pressure environment between the condenser 15 and the low-temperature concentration tank 192, accelerating the flow of water vapor to the condenser 15. Water vapor entering condenser 15 is condensed and converted into liquid water, which eventually flows into permeate collection tank 16 for recycling, realizing an environmentally friendly closed loop of water resource utilization and concentration process.

[0030] The cleaning component includes a filter membrane 21, blades 22, a lower rotating rod 23, a rotating shaft 24, a servo motor 25, and an upper rotating rod 26. The filter membrane 21 is disposed on the upper part of the inner surface of the separation chamber 11. The servo motor 25 is fixedly connected to the middle of the top end of the rotating shaft 24. The rotating shaft 24 is disposed on the middle of the top end of the inner surface of the separation chamber 11. The upper rotating rod 26 is rotatably connected to the bottom of the rotating shaft 24. The lower rotating rod 23 is disposed at the bottom of the upper rotating rod 26. The blades 22 are fixedly connected to the outer wall of the lower rotating rod 23.

[0031] When the upper rotating rod 26 and the lower rotating rod 23 rotate synchronously, they drive the blades 22 to form a three-dimensional rotating flow field. The centrifugal force generated by the blades 22 can throw the sticky colloidal substances attached to the surface of the filter membrane 21 outward, while the shear force can break up the colloidal aggregates. This can effectively prevent the colloidal substances from forming a dense adhesion layer on the surface of the filter membrane 21, thereby ensuring the continuity of production.

[0032] The filter membrane 21 has filter pores 27 inside, and the filter pores 27 are evenly distributed.

[0033] The material is separated from the target components and impurities. The components that meet the filtration requirements are discharged through the filter pores 27, while impurities and colloidal / sticky substances adhere to the surface of the filter membrane 21.

[0034] A support frame 31 is welded to one end of the outer surface of the separation chamber 11. Turntables 34 are provided at the top and bottom of the inner surface of the support frame 31. A lead screw 33 is rotatably connected between the two turntables 34. A nut ring 36 is threaded onto the outer surface of the lead screw 33. A reduction motor 32 is fixedly connected to the top of the support frame 31.

[0035] The height of the blades 22 can be precisely adjusted by controlling the forward and reverse rotation direction and running time of the geared motor 32 according to the actual thickness of the colloidal / sticky substance on the surface of the filter membrane 21, until the blades 22 are completely attached to the surface of the colloidal / sticky substance, thus preparing for subsequent cleaning operations.

[0036] A mounting bracket 37 is welded to the top of the servo motor 25, and a support rod 35 is fixedly connected between the mounting bracket 37 and the nut ring 36.

[0037] The other end of the top of the separation chamber 11 is provided with a guide rod 41, and the other end of the outer surface of the fixing frame 37 is provided with a support rod 42. The outer end of the support rod 42 is provided with a guide ring 43, and the guide ring 43 is slidably connected to the outside of the guide rod 41.

[0038] When the blade 22 is adjusted up and down, the guide ring 43 will move outside the guide rod 41 at the same time, providing support for the blade 22 during adjustment.

[0039] The top of the separation chamber 11 is fitted with a top cover 12, and a feed inlet 13 is opened at one end of the top of the top cover 12;

[0040] When the device is running, the material to be filtered enters the separation chamber 11 through the feed inlet 13.

[0041] Working principle:

[0042] First, during device operation, the material to be filtered enters the separation chamber 11 through the feed inlet 13. The material flows naturally within the separation chamber 11 and contacts the filter membrane 21 (made of polyvinylidene fluoride or polyethersulfone, selectively separating large molecular active ingredients such as polysaccharides and saponins from *Ficus hirta*, while allowing water and small molecule impurities to pass through). The filter pores 27 inside the filter membrane 21 separate the target components from impurities in the material. Components meeting filtration requirements are discharged through the filter pores 27, while impurities and colloidal / sticky substances adhere to the surface of the filter membrane 21. After the initial filtration is completed, as colloidal / sticky substances gradually accumulate on the surface of the filter membrane 21, the geared motor 32 is activated. The geared motor 32 outputs power to synchronously drive the turntable 34 and the lead screw 33 to rotate around their own axis. Since the nut ring 36 and the lead screw 33 are threadedly connected, the rotational motion of the lead screw 33 can be converted into the vertical linear motion of the nut ring 36 along the axis of the lead screw 33. Furthermore, since the nut ring 36 and the servo motor 25 are fixedly installed as one unit, the vertical movement of the nut ring 36 will synchronously drive the servo motor 25, the upper rotating rod 26, and the lower rotating rod 25. The height of rod 23 and blades 22 mounted on the lower rotating rod 23 can be adjusted. The operator can adjust the height of blades 22 by controlling the forward and reverse rotation direction and operating time of the reduction motor 32, based on the actual thickness of the colloidal / viscous substance on the surface of the filter membrane 21, until the blades 22 are completely in contact with the surface of the colloidal / viscous substance. Then, the servo motor 25 is started, driving the rotating shaft 24 to rotate at high speed around its own axis. The rotating shaft 24 further transmits power to the upper rotating rod 26 and the lower rotating rod 23, causing them to rotate synchronously. The blades 22, which are fixedly connected to the rotating rod 23, rotate at high speed together with the lower rotating rod 23. During the rotation, the blades 22 generate a continuous centrifugal force due to the centrifugal effect, and at the same time, a shear force is generated at the interface with the colloid / sticky substance. The centrifugal force can directly throw the colloid / sticky substance in contact with the blades 22 away from the surface of the filter membrane 21, while the shear force helps to break the adhesion between the colloid / sticky substance and the surface of the filter membrane 21. Under the combined action of the two forces, the colloid / sticky substance on the surface of the filter membrane 21 is completely peeled off and discharged, effectively preventing the filter pores 27 from clogging.

[0043] This step involves real-time maintenance of the filter membrane 21 during the production process, ensuring the continuous and stable operation of the filtration device and ultimately achieving a dual guarantee of material filtration efficiency and production continuity.

[0044] Please see Figures 1-5 As shown, this embodiment, based on the above embodiment, further includes:

[0045] The fixing component includes a chuck 51 and a slot 53. The slot 53 is located in the middle of the bottom end of the upper rotating rod 26, and the chuck 51 is fixed in the middle of the top end of the lower rotating rod 23. The outer surface of the chuck 51 is engaged with the inside of the slot 53.

[0046] Because the dimensions of the chuck 51 and the slot 53 are precisely matched, after the chuck 51 is fully embedded in the slot 53, the relative radial displacement of the upper rotating rod 26 and the lower rotating rod 23 can be restricted, thus achieving the initial positioning of the two rods and avoiding circumferential offset during assembly.

[0047] A rubber rod 52 is bonded to the outer wall of the chuck 51, and a fixing hole 54 is provided on the outside of the upper rotating rod 26, which is adapted to the rubber rod 52;

[0048] When the rubber rod 52 is aligned with the fixing hole 54, the external extrusion force disappears, and the rubber rod 52 recovers its deformation by its own elasticity, rebounds from the contracted state and gets stuck inside the fixing hole 54, forming an axial limit lock.

[0049] Working principle:

[0050] The operator aligns the top of the chuck 51 with the port of the slot 53 and pushes the lower rotating rod 23 to slowly insert the chuck 51 into the slot 53. When the chuck 51 is fully inserted into the slot 53, the rubber rod 52 on the chuck 51 is in the same axial position as the fixing hole 54. At this time, the operator applies appropriate pressure to squeeze the rubber rod 52. The rubber rod 52 undergoes elastic deformation under pressure and is squeezed to a contracted state. Then the lower rotating rod 23 can continue to advance axially until the rubber rod 52 moves to the position of the fixing hole 54. When the rubber rod 52 is aligned with the fixing hole 54, the squeezing force disappears, and the rubber rod 52 recovers its deformation by its own elasticity, rebounds from the contracted state, and is locked into the fixing hole 54, forming an axial limit lock.

[0051] This step, through the double fixing structure formed by the upper rotating rod 26 and the lower rotating rod 23, effectively avoids radial offset or axial separation of the two rods during subsequent rotation.

[0052] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A low-temperature concentration membrane separation device for *Ficus hirta* extract, characterized in that, include: A separation chamber (11) is provided with a low-temperature concentration tank (192) on one side of the outer surface of the separation chamber (11). A solenoid valve (18) is provided at the lower part of one end of the outer surface of the low-temperature concentration tank (192). A second tube (191) is provided between the solenoid valve (18) and the separation chamber (11). A vacuum pump (19) is provided at the top of the low-temperature concentration tank (192). A collection tank (16) is fixed on one side of the low-temperature concentration tank (192). A first tube (14) is provided between the collection tank (16) and the vacuum pump (19). A condenser (15) is provided on the outer surface of the first tube (14). A heat pump heating jacket (17) is provided on the inner surface of the low-temperature concentration tank (192). The cleaning component includes a filter membrane (21), blades (22), a lower rotating rod (23), a rotating shaft (24), a servo motor (25), and an upper rotating rod (26). The filter membrane (21) is disposed on the upper part of the inner surface of the separation chamber (11). The servo motor (25) is fixedly connected to the middle of the top end of the rotating shaft (24). The rotating shaft (24) is disposed on the middle of the top end of the inner surface of the separation chamber (11). The upper rotating rod (26) is rotatably connected to the bottom of the rotating shaft (24). The lower rotating rod (23) is disposed at the bottom of the upper rotating rod (26). The blades (22) are fixedly connected to the outer wall of the lower rotating rod (23).

2. The low-temperature concentration membrane separation device for *Ficus hirta* extract according to claim 1, characterized in that: The filter membrane (21) has filter holes (27) inside, and the filter holes (27) are evenly distributed.

3. The low-temperature concentration membrane separation device for *Ficus hirta* extract according to claim 1, characterized in that: A support frame (31) is welded to one end of the outer surface of the separation chamber (11). Turntables (34) are provided at the top and bottom of the inner surface of the support frame (31). A lead screw (33) is rotatably connected between the two turntables (34). A nut ring (36) is threaded onto the outer surface of the lead screw (33). A geared motor (32) is fixedly connected to the top of the support frame (31).

4. The low-temperature concentration membrane separation device for *Ficus hirta* extract according to claim 3, characterized in that: A mounting bracket (37) is welded to the top of the servo motor (25), and a support rod (35) is fixedly connected between the mounting bracket (37) and the nut ring (36).

5. The low-temperature concentration membrane separation device for *Ficus hirta* extract according to claim 4, characterized in that: The other end of the top of the separation chamber (11) is provided with a guide rod (41), and the other end of the outer surface of the fixing frame (37) is provided with a support rod (42). The outer end of the support rod (42) is provided with a guide ring (43), and the guide ring (43) is slidably connected to the outside of the guide rod (41).

6. The low-temperature concentration membrane separation device for *Ficus hirta* extract according to claim 1, characterized in that: The top of the separation chamber (11) is fitted with a top cover (12), and a feed inlet (13) is opened at one end of the top of the top cover (12).

7. The low-temperature concentration membrane separation device for *Ficus hirta* extract according to claim 1, characterized in that: It also includes a fixing component, which includes a chuck (51) and a slot (53). The slot (53) is located at the middle of the bottom end of the upper rotating rod (26), and the chuck (51) is fixed at the middle of the top end of the lower rotating rod (23). The outer surface of the chuck (51) is engaged with the inside of the slot (53).

8. The low-temperature concentration membrane separation device for *Ficus hirta* extract according to claim 7, characterized in that: A rubber rod (52) is bonded to the outer wall of the chuck (51), and a fixing hole (54) is provided on the outside of the upper rotating rod (26), which is adapted to the rubber rod (52).

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