Algal solid-liquid separation device
By using an inclined guide tube and a variable pitch auger blade design, combined with high-pressure nozzle flushing, the problem of algae clogging in the algae solid-liquid separation device is solved, achieving efficient solid-liquid separation and clean operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BINZHOU XINSHUNYUAN BIOTECHNOLOGY CO LTD
- Filing Date
- 2025-08-01
- Publication Date
- 2026-07-07
AI Technical Summary
In existing algae solid-liquid separation devices, algae easily adhere to the surface of the filter components during the separation process, forming a filter cake layer, which increases the filtration resistance, requires frequent shutdowns for cleaning, and results in low separation efficiency.
The design employs an inclined guide tube and a variable pitch auger blade, combined with high-pressure nozzle flushing, to achieve integrated algae transport and compression, clear filter blockage, and reduce the water content of the algae.
It effectively removes algae residue from the filter pores, improves separation efficiency, reduces downtime for cleaning, and lowers subsequent drying energy consumption.
Smart Images
Figure CN224462350U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of algae production technology, specifically an algae solid-liquid separation device. Background Technology
[0002] Algae, as highly efficient photosynthetic organisms, have wide applications in food, medicine, bioenergy, and environmental remediation. For example, spirulina can be used as a nutritional supplement, microalgae can be used to produce biodiesel, and cyanobacteria can be used for nitrogen and phosphorus purification in water bodies. Solid-liquid separation is a crucial step in algae cultivation. Algae typically grow in liquid culture media, and upon harvesting, the algal cells (solid) must be separated from the culture medium (liquid) to obtain high-purity algal raw materials.
[0003] Plate and frame filter presses are a commonly used device for solid-liquid separation of algae. Although plate and frame filter presses rely on pressure filtration and have high separation efficiency, existing devices still have the following shortcomings due to the characteristics of algae (such as small cell size, high viscosity, and easy aggregation):
[0004] During the separation process, algae easily adhere to the surface of the filter components, forming a "filter cake layer," which increases filtration resistance and requires frequent shutdowns for cleaning. Utility Model Content
[0005] The purpose of this invention is to provide an algae solid-liquid separation device to solve the problems mentioned in the background art.
[0006] The objective of this utility model can be achieved through the following technical solutions:
[0007] An algae solid-liquid separation device includes a base plate; and further includes:
[0008] A guide tube is placed obliquely above the base plate, and a support column is fixedly connected between the outer periphery of the guide tube and the top surface of the base plate;
[0009] A filter cartridge is coaxially installed in a guide tube. A sealing ring is fixedly installed between the outer periphery of the filter cartridge and the inner wall of the support column at the higher end. The higher end of the filter cartridge is an open structure.
[0010] A rotatable conveying and compression mechanism is installed in the filter cartridge, and the conveying and compression mechanism is provided with an anti-clogging structure;
[0011] The feed funnel is located at the lower end of the guide tube, and the bottom end of the feed funnel passes through the guide tube and communicates with the interior of the filter tube.
[0012] Furthermore, the guiding and compressing mechanism includes a rotating shaft and a drive assembly fixedly installed around the periphery of the guide tube;
[0013] The rotating shaft is coaxially installed in the filter cartridge, and the end of the rotating shaft that is away from the higher position of the filter cartridge rotates through the end side of the filter cartridge to the outside of the filter cartridge;
[0014] The auger blades are fixedly installed on the periphery of the rotating shaft and are located in the filter cylinder. The outer edge of the auger blades slides in contact with the inner wall of the filter cylinder, and the pitch of the auger blades gradually increases from the higher end to the lower end of the filter cylinder.
[0015] Furthermore, the drive assembly includes a driven pulley and a motor fixedly mounted on the periphery of the guide tube via a motor frame, wherein a drive pulley is fixedly mounted on the output shaft end of the motor;
[0016] The driven pulley is fixedly installed on the periphery of the rotating shaft and located outside the filter cartridge. A belt is installed between the driven pulley and the driving pulley.
[0017] Furthermore, the anti-clogging structure includes a hollow cavity of a rotating shaft. The end of the rotating shaft near the lower position of the filter cartridge is an open structure and is equipped with a rotating pipe connector. The rotating shaft is connected to a rotatable flexible conduit through the rotating pipe connector. The end of the flexible conduit away from the rotating pipe connector is connected to an external water supply device.
[0018] The outer edge of the auger blade has a groove along its spiral trajectory. Multiple channels communicating with the rotating shaft are opened on the side of the groove away from the inner wall of the filter cartridge. A nozzle is installed in one of the channels near the groove.
[0019] The multiple channels are distributed in an array along the spiral trajectory of the auger blade.
[0020] Furthermore, the outer periphery of the filter cartridge is fixedly connected to the inner wall of the guide tube at a position near the lower end with a plurality of circumferentially arrayed clamping rods.
[0021] The beneficial effects of this utility model are:
[0022] 1. This utility model effectively removes algae residue in the filter holes by sliding contact between the outer edge of the auger blade and the inner wall of the filter cartridge, combined with high-pressure rinsing from a rotatable nozzle. This dual action solves the problem of reduced efficiency caused by clogging in traditional devices.
[0023] 2. The variable pitch design of the screw conveyor blades in this utility model enables the compression and dehydration of algae. Compared with ordinary filtration devices, the water content of the algae is reduced after separation, thus reducing the energy consumption of subsequent drying processes. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0026] Figure 2 This is a three-dimensional schematic diagram of the present invention;
[0027] Figure 3 yes Figure 2 A three-dimensional diagram from another angle;
[0028] Figure 4 This is a three-dimensional schematic diagram of the internal structure of the guide tube and filter tube in this utility model;
[0029] Figure 5 This is a structural schematic diagram of the connection relationship between the hollow shaft and the auger blade in this utility model;
[0030] Figure 6 yes Figure 5 Enlarged view of section A;
[0031] The accompanying figure is labeled as follows:
[0032] 1-Base plate, 2-Support column, 3-Guide cylinder, 4-Motor frame, 5-Motor, 6-Feed funnel, 7-Rotating shaft, 8-Rotating pipe connector, 9-Flexible guide tube, 10-Driving pulley, 11-Belt, 12-Driven pulley, 13-Filter cartridge, 14-Reinforcing rod, 15-Auger blade, 16-Sealing ring, 17-Groove, 18-Channel, 19-Nozzle. Detailed Implementation
[0033] 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.
[0034] Example 1:
[0035] Please see Figures 1-3 In this embodiment of the invention, an algae solid-liquid separation device includes a base plate 1; and further includes:
[0036] A guide cylinder 3 is placed obliquely above the base plate 1, and a support column 2 is fixedly connected between the outer periphery of the guide cylinder 3 and the top surface of the base plate 1.
[0037] The filter cartridge 13 is coaxially installed in the guide tube 3. A sealing ring 16 is fixedly installed between the outer periphery of the filter cartridge 13 and the inner wall of the support column 2 at the higher end. The higher end of the filter cartridge 13 is an open structure.
[0038] A rotatable conveying and compression mechanism is installed in the filter cartridge 13, and the conveying and compression mechanism is equipped with an anti-clogging structure;
[0039] The feed hopper 6 is located at the lower end of the guide tube 3. The bottom end of the feed hopper 6 passes through the guide tube 3 and communicates with the interior of the filter tube 13.
[0040] After the algae liquid enters the filter cylinder 13 from the feed funnel 6, it moves to the higher end of the filter cylinder 13 under the action of the conveying and compression mechanism. During the process, the liquid passes through the filter holes of the filter cylinder 13 and enters the guide cylinder 3, and finally flows out along the inclined surface of the guide cylinder 3 to the lower end; the algae solid is pushed to the higher end of the filter cylinder 13 and discharged, thus realizing solid-liquid separation.
[0041] This invention employs an oblique layout to extend the residence time of algae in the filter cartridge 13, thereby improving the adequacy of solid-liquid separation.
[0042] Example 2:
[0043] Please see Figures 2-4 Based on Embodiment 1, the guiding and compressing mechanism includes a rotating shaft 7 and a drive assembly fixedly installed around the guide tube 3;
[0044] The rotating shaft 7 is coaxially installed in the filter cartridge 13, and the end of the rotating shaft 7 that is away from the filter cartridge 13 at a higher position rotates through the end side of the filter cartridge 13 to the outside of the filter cartridge 13.
[0045] The outer periphery of the rotating shaft 7 is fixedly installed with an auger blade 15 located in the filter cylinder 13. The outer edge of the auger blade 15 slides in contact with the inner wall of the filter cylinder 13, and the pitch of the auger blade 15 gradually increases from the higher end to the lower end of the filter cylinder 13.
[0046] The drive assembly includes a driven pulley 12 and a motor 5 fixedly mounted on the periphery of the guide tube 3 via a motor frame 4. The output shaft of the motor 5 is fixedly mounted with a drive pulley 10.
[0047] The driven pulley 12 is fixedly installed on the periphery of the rotating shaft 7 and located outside the filter cartridge 13. A belt 11 is installed between the driven pulley 12 and the driving pulley 10.
[0048] In the drive assembly, motor 5 drives shaft 7 to rotate via drive pulley 10, belt 11, and driven pulley 12, and auger blades 15 on shaft 7 rotate accordingly. As the pitch of auger blades 15 gradually increases from the higher end to the lower end of filter cartridge 13, the space gradually compresses as algae move from the feed area with a larger pitch to the discharge area with a smaller pitch, forcing the liquid in the algae to pass through filter cartridge 13 and be discharged, thus improving separation efficiency.
[0049] The variable pitch design of the screw blade 15 realizes the integration of "transportation-compression" of algae. Compared with the uniform pitch structure, it can squeeze out the water in the algae more efficiently and reduce the water content of the algae after separation.
[0050] The outer edge of the screw conveyor blade 15 slides in contact with the inner wall of the filter cartridge 13, which can scrape off algae attached to the inner wall of the filter cartridge 13 and reduce the risk of filter hole clogging.
[0051] Example 3:
[0052] Please see Figures 4-6 Based on embodiment 2, the anti-clogging structure includes a hollow cavity of the rotating shaft 7. The end of the rotating shaft 7 near the lower position of the filter cartridge 13 is an open structure and is equipped with a rotating pipe connector 8. The rotating shaft 7 is connected to a rotatable flexible conduit 9 through the rotating pipe connector 8. The end of the flexible conduit 9 away from the rotating pipe connector 8 is connected to an external water supply device.
[0053] The outer edge of the auger blade 15 has a groove 17 along its spiral trajectory. Multiple channels 18 that communicate with the rotating shaft 7 are opened on the side of the groove 17 away from the inner wall of the filter cylinder 13. A nozzle 19 is installed in one end of the channel 18 near the groove 17.
[0054] Multiple channels 18 are distributed along the spiral trajectory of the auger blade 15.
[0055] The hollow rotating shaft 7 is connected to an external water supply device via a rotating pipe connector 8 and a flexible conduit 9. High-pressure water is sprayed out from the nozzle 19 through the rotating shaft 7 and the channel 18. Since the nozzle 19 is located in the groove 17 on the outer edge of the screw conveyor blade 15 and rotates with the rotating shaft 7, the water flow can evenly flush the filter holes along the spiral trajectory of the inner wall of the filter cylinder 13, and promptly remove algae and impurities that clog the filter holes.
[0056] The self-cleaning function significantly reduces the probability of filter cartridge 13 clogging, reduces the number of downtime cleanings, and improves the continuous operation capability of the device;
[0057] Among them, the nozzles 19 are distributed in an array along the spiral trajectory of the auger blades 15 to ensure that the flushing covers every area of the inner wall of the filter cartridge 13, cleaning without dead corners; the cooperation between the flexible conduit 9 and the rotating pipe connector 8 ensures continuous water supply without affecting the rotation of the rotating shaft 7.
[0058] Example 4:
[0059] Please see Figure 2 Based on Example 1, a plurality of circumferentially arrayed clamping rods 14 are fixedly connected between the outer periphery of the filter cartridge 13 and the inner wall of the guide tube 3 at a position near the lower end.
[0060] Near the lower end of the outer periphery of the filter cartridge 13, multiple reinforcing rods 14 arranged in a circumferential array connect the filter cartridge 13 and the inner wall of the guide tube 3, enhancing the relative fixation strength between the two and preventing relative displacement between the filter cartridge 13 and the guide tube 3 due to algae impact or equipment vibration.
[0061] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. An apparatus for solid-liquid separation of algae, comprising a bottom plate (1); characterized in that, Also includes: A guide cylinder (3) is obliquely placed above the base plate (1), and a support column (2) is fixedly connected between the outer periphery of the guide cylinder (3) and the top surface of the base plate (1). A filter cartridge (13) is coaxially installed in the guide tube (3). A sealing ring (16) is fixedly installed between the outer periphery of the filter cartridge (13) and the inner wall of the support column (2) at the higher end. The higher end of the filter cartridge (13) is an open structure. A rotatable conveying and compression mechanism is installed in the filter cartridge (13), and the conveying and compression mechanism is provided with an anti-clogging structure; The feed funnel (6) is located at the lower end of the guide tube (3). The bottom end of the feed funnel (6) passes through the guide tube (3) and communicates with the interior of the filter tube (13).
2. The apparatus of claim 1, wherein, The guiding and compressing mechanism includes a rotating shaft (7) and a drive assembly fixedly installed on the periphery of the guide tube (3); The rotating shaft (7) is coaxially installed in the filter cylinder (13), and the end of the rotating shaft (7) away from the filter cylinder (13) at a higher position rotates through the end side of the filter cylinder (13) to the outside of the filter cylinder (13); The auger blade (15) is fixedly installed on the periphery of the rotating shaft (7) in the filter cylinder (13). The outer edge of the auger blade (15) slides in contact with the inner wall of the filter cylinder (13). The pitch of the auger blade (15) gradually increases from the higher end to the lower end of the filter cylinder (13).
3. The device of claim 2, wherein, The drive assembly includes a driven pulley (12) and a motor (5) fixedly mounted on the periphery of the guide tube (3) via a motor frame (4). The output shaft of the motor (5) is fixedly mounted with a drive pulley (10). The driven pulley (12) is fixedly installed on the periphery of the rotating shaft (7) and located outside the filter cartridge (13). A belt (11) is installed between the driven pulley (12) and the driving pulley (10).
4. The device of claim 2, wherein The anti-clogging structure includes a hollow cavity of a rotating shaft (7). The end of the rotating shaft (7) near the lower position of the filter cartridge (13) is an open structure and is equipped with a rotating pipe connector (8). The rotating shaft (7) is connected to a rotatable flexible conduit (9) through the rotating pipe connector (8). The end of the flexible conduit (9) away from the rotating pipe connector (8) is connected to an external water supply device. The outer edge of the auger blade (15) is provided with a groove (17) along its spiral trajectory. Multiple channels (18) communicating with the rotating shaft (7) are provided on the side of the groove (17) away from the inner wall of the filter cylinder (13). A nozzle (19) is installed in one end of the channel (18) near the groove (17). Multiple channels (18) are distributed in an array along the spiral trajectory of the auger blade (15).
5. The device of claim 1, wherein The filter cartridge (13) has multiple circumferentially arrayed clamping rods (14) fixedly connected to the inner wall of the guide tube (3) at a position near the lower end.