Algal centrifuge

Abstract

The application provides an algal centrifuge, which comprises a rack, a rotating drum vertically arranged on the rack and provided with a containing chamber with an open top end, a driving device arranged on the rack and used for driving the rotating drum to rotate, a water receiving device fixedly arranged on the top of the rack and communicated with the open top end of the containing chamber, and a liquid inlet pipe with its upper end fixedly arranged on the water receiving device in a vertical manner and its lower end inserted into the containing chamber and extended to the bottom surface of the containing chamber. The algal centrifuge disclosed by the application is fixedly connected with the liquid inlet pipe and the water receiving device, and the liquid inlet pipe is in clearance fit with the rotating drum. The algal mixed solution can be injected into the containing chamber from the top end of the liquid inlet pipe. During the centrifugation process, the separated clear liquid enters the water receiving device from the clearance between the liquid inlet pipe and the rotating drum, and the algal concentrate is deposited on the bottom surface of the containing chamber. The algal centrifuge does not need to be provided with a sealing structure between the liquid inlet pipe and the rotating drum, so that the leakage risk at the connection position between the rotating drum and the liquid inlet pipe is avoided.

Description

Technical Field

[0001] This invention relates to the field of centrifugal separation technology, and more particularly to an algae centrifuge. Background Technology

[0002] Algae separation generally involves centrifuging and concentrating a mixture containing algae in a tubular centrifuge. The separation principle of algae in a tubular centrifuge is as follows: an electric motor drives a tubular drum to rotate at high speed. The algae mixture enters from the inlet at the bottom of the drum. Under the action of centrifugal force, the denser algae particles quickly settle to the bottom of the inner side of the drum. The clarified liquid is drawn upward from the clarified liquid outlet under the action of centrifugal force, thus achieving solid-liquid separation. Finally, the settled algae are collected at the bottom of the drum.

[0003] In existing technologies, an infusion pipe is typically installed at the central axis of the bottom of a rotating drum. Algae mixture is injected into the drum through this pipe. During injection, the drum rotates at high speed, allowing for simultaneous injection and separation. Furthermore, it is crucial to ensure that the infusion pipe does not rotate with the drum during injection, thus preventing rotation between the pipeline transporting the algae mixture and the infusion pipe. Since the drum rotates around the infusion pipe, a dynamic seal is required between them. However, designing such a dynamic seal is complex, especially during high-speed rotation, making it difficult to guarantee a proper seal between the infusion pipe and the drum, thus failing to effectively prevent leakage risks. Summary of the Invention

[0004] In view of this, the present invention proposes an algae centrifuge to solve the problem that the existing tubular centrifuge uses a dynamic sealing connection between the rotating drum and the infusion tube, which cannot guarantee the sealing performance and is prone to leakage at the connection between the rotating drum and the infusion tube.

[0005] The technical solution of this invention is implemented as follows:

[0006] This invention provides an algae centrifuge, comprising:

[0007] frame;

[0008] The rotating drum is vertically mounted on the frame and has a receiving chamber with an opening at the top.

[0009] The drive unit, mounted on the frame, is used to drive the drum to rotate.

[0010] The water receiving device is fixedly installed on the top of the frame and connected to the opening of the receiving chamber;

[0011] An infusion tube is vertically fixed at its upper end on a water receiving device, and its lower end is inserted into a receiving chamber and extends towards the bottom surface of the receiving chamber. There is a gap between the infusion tube and the receiving chamber for liquid flow.

[0012] Based on the above technical solution, preferably, the frame includes a base and a support frame fixedly mounted on the base, the rotating drum includes a cylinder, a first rotating part fixedly mounted at the bottom end of the cylinder and a second rotating part fixedly mounted at the top end of the cylinder, the receiving chamber is disposed in the cylinder, a channel communicating with the receiving chamber is provided at the axis of the second rotating part, the first rotating part is rotatably connected to the base, the second rotating part is rotatably connected to the top end of the support frame, the water receiving device is fixedly mounted at the top end of the support frame and communicates with the channel, and the lower end of the infusion tube passes through the channel and extends towards the bottom surface of the receiving chamber.

[0013] Furthermore, preferably, the diameters of the first rotating part and the second rotating part are both smaller than the diameter of the cylinder, the top surface of the accommodating cavity has an upwardly inclined first conical surface, and the bottom surface of the accommodating cavity has a downwardly inclined second conical surface.

[0014] Furthermore, the angle between the second conical surface and the infusion tube is set to 45°-60°.

[0015] Based on the above technical solution, preferably, the water receiving device includes a water receiving tray and a cap. The water receiving tray is fixedly installed on the top surface of the support frame and has a receiving cavity with a top opening. The cap is fixedly installed at the top opening of the water receiving tray. The upper end of the infusion tube passes through the cap and is fixedly connected to it. The outer wall of the water receiving tray has a drain pipe that communicates with the receiving cavity. An installation hole that communicates with the receiving cavity is opened at the center of the bottom surface of the water receiving tray. The second rotating part passes upward through the installation hole, and the channel communicates with the receiving cavity.

[0016] Furthermore, preferably, the bottom surface of the receiving cavity has a third conical surface that slopes upward toward the center of the mounting hole.

[0017] Furthermore, preferably, a guide sleeve is provided between the mounting hole and the second rotating part. The guide sleeve is sealed and fixedly connected to the second rotating part. The guide sleeve has a through hole connected to the channel at its central axis. The guide sleeve is clearance-fitted with the mounting hole. The top edge of the guide sleeve has an annular flange that extends above the third conical surface.

[0018] Based on the above technical solution, preferably, multiple stiffening plates are fixedly arranged at equal intervals around the axis of the inner wall of the cylinder, and there is a gap between the vertical side wall of the stiffening plate and the infusion tube. A support sleeve is fixedly arranged between the lower ends of the vertical side walls of the multiple stiffening plates, and the infusion tube is inserted into the support sleeve.

[0019] Furthermore, preferably, it also includes an ultrasonic generator, which includes a mounting base and an ultrasonic generator. The mounting base is fixedly mounted on the top surface of the cap, and the ultrasonic generator is fixedly mounted on the mounting base and sleeved on the outer peripheral wall of the infusion tube.

[0020] Preferably, the driving device includes a motor, a driving wheel, a driven wheel, and a transmission belt. The motor is fixedly mounted on the base, the output shaft of the motor is fixedly connected to the driving wheel, the driven wheel is fixedly connected to the first rotating part, and the driving wheel and the driven wheel are connected by a transmission belt.

[0021] The present invention has the following advantages over the prior art:

[0022] (1) The algae centrifuge disclosed in this invention inserts the infusion tube from top to bottom into the rotating drum through the water receiving device and fixes the infusion tube and the water receiving device in place. The infusion tube and the rotating drum are fitted with a gap. The algae mixture can be injected into the receiving chamber from the top of the infusion tube. During the centrifugation process, the separated clear liquid enters the water receiving device from the gap between the infusion tube and the rotating drum. The algae concentrate precipitates on the bottom surface of the receiving chamber. The entire algae centrifuge does not require a sealing structure between the infusion tube and the rotating drum, thereby avoiding the risk of leakage at the connection between the rotating drum and the infusion tube.

[0023] (2) By setting a third conical surface that is inclined upward toward the center of the mounting hole on the bottom surface of the storage cavity, the liquid can be blocked by the inclined third conical surface after entering the storage cavity, thus preventing the liquid from overflowing.

[0024] (3) By setting the guide sleeve and the third conical surface, the separated clear liquid can be smoothly introduced into the receiving cavity, avoiding leakage of clear liquid between the second rotating part and the mounting hole;

[0025] (4) Ultrasonic waves are applied to the top of the infusion tube by an ultrasonic generator. The ultrasonic waves are transmitted to the bottom of the infusion tube and act on the inner wall of the cylinder through the support sleeve and rib plate. Thus, the algae concentrate adhering to the inner wall of the cylinder is separated by ultrasonic waves, reducing or avoiding the degree of adhesion of algae concentrate to the inner wall of the cylinder, thereby achieving efficient algae separation and increasing the amount of algae concentrate separated. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a three-dimensional structural diagram of the algae centrifuge disclosed in this invention;

[0028] Figure 2 This is a top view of the algae centrifuge disclosed in this invention;

[0029] Figure 3 for Figure 2 Planar sectional view at point AA;

[0030] Figure 4 for Figure 2 Plan view at point BB;

[0031] Figure label:

[0032] 1. Frame; 2. Rotating drum; 20. Receiving chamber; 3. Drive unit; 4. Water receiving device; 5. Infusion tube; 11. Base; 12. Support frame; 21. Cylinder body; 22. First rotating part; 23. Second rotating part; 231. Channel; 201. First conical surface; 202. Second conical surface; 41. Water receiving tray; 42. Cover; 411. Receiving cavity; 412. Drain pipe; 413. Mounting hole; 4111. Third conical surface; 6. Guide sleeve; 61. Through hole; 62. Annular flange; 211. Rib plate; 212. Support sleeve; 7. Ultrasonic generator; 71. Mounting base; 72. Ultrasonic generator; 31. Motor; 32. Drive wheel; 33. Driven wheel; 34. Transmission belt. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0034] like Figure 1 As shown, combined with Figure 2-4 This invention discloses an algae centrifuge, which includes a frame 1, a rotating drum 2, a drive device 3, a water receiving device 4, and a liquid delivery pipe 5.

[0035] The rotating drum 2 is vertically rotatably mounted on the frame 1. The rotating drum 2 has a accommodating chamber 20 with an opening at the top, which is used to hold the algae mixture.

[0036] The drive unit 3, mounted on the frame 1, is used to drive the rotating drum 2 to rotate at high speed in the vertical direction around its axis to centrifuge the algae mixture inside the rotating drum 2, causing the clear liquid in the mixture to be thrown upwards and the algae concentrate in the mixture to precipitate down, thereby achieving the collection of algae concentrate.

[0037] The water receiving device 4 is fixedly installed on the top of the frame 1 and is connected to the opening of the accommodating chamber 20. During the high-speed centrifugation process of the rotating drum 2, the clear liquid in the accommodating chamber 20 is thrown upward and enters the water receiving device 4, thereby achieving solid-liquid separation.

[0038] The infusion tube 5 is vertically fixed at its upper end on the water receiving device 4, and its lower end is inserted into the receiving chamber 20 and extends into the bottom surface of the receiving chamber 20. There is a gap between the infusion tube 5 and the receiving chamber 20 for liquid flow.

[0039] With this setup, the infusion tube 5 and the water receiving device 4 remain fixed, while only the rotating drum 2 rotates relative to the frame 1. At the same time, the rotating drum 2 rotates around the infusion tube 5, allowing the algae mixture to be introduced into the receiving chamber 20 through the infusion tube 5. During the high-speed rotation of the rotating drum 2, the clear liquid after centrifugation in the receiving chamber 20 rises upward through the gap between the infusion tube 5 and the receiving chamber 20 and enters the water receiving device 4, thus achieving the collection of the separated clear liquid by the water receiving device 4. The separated algae concentrate settles on the bottom surface of the receiving chamber 20, and finally, the algae concentrate in the receiving chamber 20 is drawn out and collected through the infusion tube 5.

[0040] The algae centrifuge disclosed in this invention involves inserting a liquid infusion tube 5 through a water receiving device 4 from top to bottom into a rotating drum 2, with the infusion tube 5 and water receiving device 4 fixedly connected. A gap fit exists between the infusion tube 5 and the rotating drum 2, allowing the algae mixture to be injected into the receiving chamber 20 from the top of the infusion tube 5. During centrifugation, the separated clear liquid flows upwards into the water receiving device 4 through the gap between the infusion tube 5 and the rotating drum 2, while the algae concentrate settles on the bottom surface of the receiving chamber 20. The entire algae centrifuge, through the gap fit between the infusion tube 5 and the rotating drum 2, eliminates the need for both dynamic and static sealing structures between them, thus avoiding the risk of leakage at the connection between the rotating drum 2 and the infusion tube 5.

[0041] To enable the rotating drum 2 to rotate vertically on the frame 1, this embodiment sets the frame 1 to include a base 11 and a support frame 12 fixedly mounted on the base 11. The structure of the rotating drum 2 is also configured; for details, please refer to the attached diagram. Figure 3 and 4 As shown, the rotating cylinder 2 includes a cylinder body 21, a first rotating part 22 fixedly disposed at the bottom end of the cylinder body 21, and a second rotating part 23 fixedly disposed at the top end of the cylinder body 21. A receiving chamber 20 is disposed inside the cylinder body 21. A channel 231 communicating with the receiving chamber 20 is provided at the axis of the second rotating part 23. The first rotating part 22 is rotatably connected to the base 11, and the second rotating part 23 is rotatably connected to the top end of the support frame 12. A water receiving device 4 is fixedly disposed at the top end of the support frame 12 and communicates with the channel 231. The lower end of the infusion tube 5 passes through the channel 231 and extends into the bottom surface of the receiving chamber 20.

[0042] In the above embodiment, the first rotating part 22 and the base 11 are connected by a bearing, and the second rotating part 23 passes upward through the top of the support frame 12 and is rotatably connected to the support frame 12 by a bearing. In this embodiment, the diameters of the first rotating part 22 and the second rotating part 23 are smaller than the outer diameter of the cylinder 21, and the outer diameter of the infusion tube 5 is smaller than the inner diameter of the channel 231. Thus, the infusion tube 5 passes vertically through the channel 231 and enters the receiving chamber 20, forming a gap between the infusion tube 5 and the channel 231. The infusion tube 5 and the rotating cylinder 2 are fitted with a gap, which allows the centrifugally separated clear liquid to pass upward and enter the water receiving device 4, thereby realizing the separation and collection of clear liquid.

[0043] In some preferred embodiments, the inner top surface of the containing chamber 20 has an upwardly inclined first conical surface 201. This configuration allows the algae mixture in the containing chamber 20 to be thrown upwards to the inner top surface of the containing chamber 20 under centrifugal force during high-speed rotation of the rotating drum 2. The clear liquid is then guided through the upwardly inclined first conical surface 201 into the gap between the infusion pipe 5 and the channel 231, and moves upwards along this gap into the water receiving device 4 for discharge. The inner bottom surface of the containing chamber 20 has a downwardly inclined second conical surface 202. Under centrifugal force, the algae in the containing chamber 20, being particulate matter with a relatively large weight, adheres to the lower side wall of the cylinder 21 and finally slides down from the second conical surface 202 to the inner bottom surface of the containing chamber 20, facilitating subsequent absorption and collection of the algae concentrate through the infusion pipe 5.

[0044] In the above embodiment, the angle between the second conical surface 202 and the infusion tube is set to 45°-60°. This design allows the separated algae, after adhering to the inner wall of the accommodating chamber 20, to slide down the second conical surface 202 more quickly to its lowest point. Specifically, when the angle is less than 45°, the algae take longer to slide down the second conical surface 202, reducing efficiency. When the angle is greater than 60°, the inclination of the second conical surface 202 is smaller, hindering the algae's slide and causing some algae to adhere to the second conical surface 202, preventing them from sliding to its lowest point. Therefore, by setting the angle of the second conical surface 202 as described above, this embodiment can ensure that the algae have the fastest sliding speed while avoiding adhesion to the second conical surface 202, thereby enabling more algae to gather at the lowest end of the second conical surface 202 and ensuring that more algae are ultimately collected through the infusion tube 5.

[0045] To enable the water receiving device 4 to collect the separated clear liquid, this embodiment shows a preferred implementation of the water receiving device 4. Specifically, the water receiving device 4 includes a water receiving tray 41 and a cover 42. The water receiving tray 41 is fixedly mounted on the top surface of the support frame 12. The water receiving tray 41 has a receiving cavity 411 with a top opening. The cover 42 is fixedly mounted at the top opening of the water receiving tray 41. The upper end of the infusion tube 5 passes through the cover 42 and is fixedly connected to it. In this embodiment, the infusion tube 5 and the cover 42 are sealed together. The outer wall of the water receiving tray 41 has a drain pipe 412 that communicates with the receiving cavity 411. An installation hole 413 that communicates with the receiving cavity 411 is opened at the center of the bottom surface of the water receiving tray 41. The second rotating part 23 passes upward through the installation hole 413, and the channel 231 communicates with the receiving cavity 411.

[0046] Using the above technical solution, during the centrifugation process, the separated clear liquid is thrown upward through the gap between the infusion tube 5 and the channel 231 and enters the receiving chamber 411, and is finally discharged through the drain tube 412.

[0047] As some preferred embodiments, the bottom surface of the receiving cavity 411 has a third conical surface 4111 that is inclined upward toward the center of the mounting hole 413. With this configuration, the clear liquid flowing upward from the gap between the infusion tube 5 and the channel 231 can flow downward along the third conical surface 4111 into the receiving cavity 411 and be discharged in time by the drain pipe. At the same time, the clear liquid in the receiving cavity 411 can be blocked by the third conical surface 4111 to prevent the clear liquid from overflowing.

[0048] Since the water receiving tray 41 and the support frame 12 are fixedly connected, the second rotating part 23 passes through the mounting hole 413 on the water receiving tray 41 and is fitted with the mounting hole 413 with a clearance. After the clear liquid is thrown upward through the gap between the channel 231 and the infusion tube 5, the clear liquid will fall into the connection between the second rotating part 23 and the water receiving tray 41 under the action of gravity, and thus leak along the connection. If leakage is to be avoided, a dynamic sealing structure needs to be adopted between the second rotating part 23 and the mounting hole 413, which will make the whole structure complicated.

[0049] To address the aforementioned problems, this embodiment employs the following technical solution: Specifically, a guide sleeve 6 is provided between the mounting hole 413 and the second rotating part 23. The guide sleeve 6 is sealed and fixedly connected to the second rotating part 23. Specifically, the guide sleeve 6 is located between the mounting hole 413 and the second rotating part 23. The guide sleeve 6 is sleeved on the outside of the second rotating part 23 and sealed to it. The guide sleeve 6 has a through hole 61 at its central axis that connects to the channel 231. The guide sleeve 6 is clearance-fitted with the mounting hole 413. The top edge of the guide sleeve 6 has an annular flange 62 that extends above the third conical surface 4111.

[0050] With this configuration, the clear liquid flowing upward from the gap between the infusion tube 5 and the channel 231 and the through hole 61 will flow into the top of the guide sleeve 6, then flow around the annular flange 62, and finally flow downward into the third conical surface 4111. It will then flow into the receiving cavity 411 along the third conical surface 4111 and be discharged through the drain pipe 412. Through the configuration of the guide sleeve 6 and the third conical surface 4111, the separated clear liquid can be smoothly introduced into the receiving cavity 411, avoiding leakage of clear liquid between the second rotating part 23 and the mounting hole 413.

[0051] Because the infusion tube 5 is relatively long, it is only fixed by its upper end and the cap 42 of the water receiving device 4. The lower end is inserted into the rotating drum 2. As the rotating drum 2 rotates at high speed, it will generate vibration. The vibration is transmitted to the water receiving device 4 through the support frame 12, which will cause the lower end of the infusion tube 5 to vibrate and swing. Long-term swinging will cause the infusion tube 5 to be not firmly fixed on the cap.

[0052] Therefore, the following technical improvements have been made in this embodiment. Specifically, in this embodiment, multiple stiffening plates 211 are fixedly arranged at equal intervals around the axis of the inner wall of the cylinder 21, and a support sleeve 212 is fixedly arranged between the lower ends of the vertical side walls of the multiple stiffening plates 211, and the infusion tube 5 is inserted into the support sleeve 212.

[0053] Using the above technical solution, the support sleeve 212 is located at the central axis of the cylinder 21 and is fixed by multiple stiffeners 211 and the inner wall of the cylinder 21. After the infusion tube 5 is inserted into the support sleeve 212, the support sleeve 212 can rotate around the infusion tube 5 during the rotation of the rotating cylinder 2, thereby circumferentially limiting the lower end of the infusion tube 5 and preventing the lower end of the infusion tube 5 from being vibrated and swinging.

[0054] It is worth noting that there is a gap between the vertical sidewall of the stiffener 211 and the infusion tube 5, which allows the clear liquid to move upward through the gap during centrifugation, and then continue to flow upward through the channel 231 on the second rotating part 23.

[0055] During centrifugation, the algae concentrate adheres to the inner wall of the cylinder 21, preventing it from sliding down to the bottom of the containment chamber 20, thus reducing the final amount of algae concentrate collected.

[0056] Therefore, the algae centrifuge in this embodiment also includes an ultrasonic generator 7, which includes a mounting base 71 and an ultrasonic generator 72. The mounting base 71 is fixedly mounted on the top surface of the cover 42, and the ultrasonic generator 72 is fixedly mounted on the mounting base 71 and sleeved on the outer peripheral wall of the infusion tube 5.

[0057] Using the above technical solution, ultrasonic waves are applied to the top of the infusion tube 5 by the ultrasonic generator 72. The ultrasonic waves are transmitted to the lower end through the infusion tube 5 and act on the inner wall of the cylinder 21 through the support sleeve 212 and the rib plate 211. Thus, the ultrasonic waves separate the algae concentrate adhering to the inner wall of the cylinder 21, reduce or avoid the degree of adhesion of algae concentrate to the inner wall of the cylinder 21, thereby efficiently achieving algae separation and increasing the amount of algae concentrate separated.

[0058] In some implementations, the drive device 3 includes a motor 31, a driving wheel 32, a driven wheel 33, and a transmission belt 34. The motor 31 is fixedly mounted on the base 11, and its output shaft is fixedly connected to the driving wheel 32. The driven wheel 33 is fixedly connected to the first rotating part 22, and the driving wheel 32 and the driven wheel 33 are connected by the transmission belt 34. The motor 31 drives the driving wheel 32 to rotate, which in turn drives the driven wheel 33 to rotate via the transmission belt 34. The driven wheel 33 then drives the first rotating part 22 to rotate, thereby achieving high-speed rotation of the entire rotating drum 2.

[0059] In the above embodiment, the drive device 3 is a belt pulley drive. Of course, other methods can also be used to drive the drum 2 to rotate at high speed.

[0060] The working principle of the algae centrifuge disclosed in this invention is as follows:

[0061] The rotating drum is driven to rotate vertically around its axis by a drive device. Algae mixture is continuously injected into the containment chamber through the upper end of the infusion tube. Under the high-speed centrifugal force of the rotating drum, the clear liquid after centrifugation in the containment chamber rises upwards through the gap between the infusion tube and the containment chamber into the water receiving device. This allows the separated clear liquid to be collected by the water receiving tray and discharged through the drain pipe. The separated algae concentrate settles on the bottom surface of the containment chamber and is finally drawn out and collected through the infusion tube. During the high-speed rotation of the rotating drum, ultrasonic waves are applied to the top of the infusion tube 5 by the ultrasonic generator 72. The ultrasonic waves are transmitted to the lower end through the infusion tube 5 and act on the inner wall of the cylinder 21 through the support sleeve 212 and the rib plate 211. This ultrasonic wave separates the algae concentrate adhering to the inner wall of the cylinder 21, reducing or avoiding the adhesion of algae concentrate to the inner wall of the cylinder 21, thus efficiently achieving algae separation and increasing the amount of algae concentrate separated.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An algae centrifuge, characterized in that, include: Rack (1); The rotating drum (2) is vertically rotatably mounted on the frame (1), and the rotating drum (2) has a receiving chamber (20) with an opening at the top. A drive unit (3) is mounted on the frame (1) and is used to drive the drum (2) to rotate. The water receiving device (4) is fixedly installed on the top of the frame (1) and connected to the opening of the accommodating chamber (20); The infusion tube (5) is vertically fixed at its upper end on the water receiving device (4), and its lower end is inserted into the accommodating chamber (20) and extends into the bottom surface of the accommodating chamber (20). There is a gap between the infusion tube (5) and the accommodating chamber (20) for liquid flow. The frame (1) includes a base (11) and a support frame (12) fixedly mounted on the base (11). The rotating drum (2) includes a cylinder (21), a first rotating part (22) fixedly mounted at the bottom of the cylinder (21), and a second rotating part (23) fixedly mounted at the top of the cylinder (21). The accommodating chamber (20) is located inside the cylinder (21). A channel (231) connected to the accommodating chamber (20) is provided at the axis of the second rotating part (23). The first rotating part (22) is rotatably connected to the base (11). The second rotating part (23) is rotatably connected to the top of the support frame (12). The water receiving device (4) is fixedly mounted at the top of the support frame (12) and connected to the channel (231). The lower end of the infusion tube (5) passes through the channel (231) and extends toward the bottom surface inside the accommodating chamber (20). The water receiving device (4) includes a water receiving tray (41) and a cover (42). The water receiving tray (41) is fixedly installed on the top surface of the support frame (12). The water receiving tray (41) has a receiving cavity (411) with a top opening. The cover (42) is fixedly installed at the top opening of the water receiving tray (41). The upper end of the infusion tube (5) passes through the cover (42) and is fixedly connected to it. The outer wall of the water receiving tray (41) has a drain pipe (412) that communicates with the receiving cavity (411). The center of the bottom surface of the water receiving tray (41) is provided with an installation hole (413) that communicates with the receiving cavity (411). The second rotating part (23) passes upward through the installation hole (413), and the channel (231) communicates with the receiving cavity (411). The inner bottom surface of the receiving cavity (411) has a third conical surface (4111) that is inclined upward toward the center of the mounting hole (413); A guide sleeve (6) is also provided between the mounting hole (413) and the second rotating part (23). The guide sleeve (6) is sealed and fixedly connected to the second rotating part (23). The guide sleeve (6) has a through hole (61) connected to the channel (231) at its central axis. The guide sleeve (6) is clearance-fitted with the mounting hole (413). The top edge of the guide sleeve (6) has an annular flange (62), which extends to the top of the third conical surface (4111).

2. The algae centrifuge as described in claim 1, characterized in that: The diameters of the first rotating part (22) and the second rotating part (23) are both smaller than the diameter of the cylinder (21). The top surface of the accommodating chamber (20) has an upwardly inclined first conical surface (201), and the bottom surface of the accommodating chamber (20) has a downwardly inclined second conical surface (202).

3. The algae centrifuge as described in claim 2, characterized in that: The angle between the second conical surface (202) and the infusion tube (5) is set to 45°-60°.

4. The algae centrifuge as described in claim 1, characterized in that: Multiple stiffeners (211) are fixedly arranged at equal intervals around the axis of the inner wall of the cylinder (21). There is a gap between the vertical side wall of the stiffener (211) and the infusion tube (5). A support sleeve (212) is fixedly arranged between the lower ends of the vertical side walls of the multiple stiffeners (211). The infusion tube (5) is inserted into the support sleeve (212).

5. The algae centrifuge as described in claim 4, characterized in that: It also includes an ultrasonic generator (7), which includes a mounting base (71) and an ultrasonic generator (72). The mounting base (71) is fixedly mounted on the top surface of the cover (42), and the ultrasonic generator (72) is fixedly mounted on the mounting base (71) and sleeved on the outer peripheral wall of the infusion tube (5).

6. The algae centrifuge as described in claim 1, characterized in that: The drive device (3) includes a motor (31), a drive wheel (32), a driven wheel (33), and a transmission belt (34). The motor (31) is fixedly mounted on the base (11). The output shaft of the motor (31) is fixedly connected to the drive wheel (32). The driven wheel (33) is fixedly connected to the first rotating part (22). The drive wheel (32) and the driven wheel (33) are connected by transmission belt (34).

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